Safety Sensors

Types of Safety Sensors for Electric Gates

Types of Safety Sensors for Electric Gates


Safety sensors are a crucial component of electric gate systems, providing essential protection to prevent accidents and ensure secure operation. As automated gates become increasingly common in residential and commercial properties, understanding the various types of safety sensors available is important for selecting the right features to meet specific safety needs. Here, we explore the primary types of safety sensors used in electric gates.




  1. Infrared Sensors (Photocells):
    Infrared sensors are one of the most common types of safety sensors used in electric gates. These sensors work by emitting an infrared beam between a transmitter and a receiver. If an object interrupts the beam while the gate is in operation, the sensor sends a signal to the gate controller to stop or reverse the motion of the gate. This helps prevent potential injury or damage to vehicles and pedestrians.




  2. Pressure Sensors (Safety Edges):
    Pressure sensors, also known as safety edges, are designed to detect physical pressure or contact. They are typically installed along the edges of the gate and consist of a flexible strip that, when pressed, activates a switch inside to halt the gate's movement. This type of sensor is particularly useful for preventing the gate from closing on a vehicle or person, offering a mechanical response to any physical obstruction.




  3. Loop Detectors:
    Loop detectors are another sophisticated type of safety sensor. They involve the installation of inductive loops beneath the driveway surface, which can detect changes in magnetic fields caused by metallic objects like cars. When a vehicle passes over or stops over the loop, the sensor signals the gate to either stay open or not to begin closing, ensuring vehicles aren't caught by a closing gate.




  4. Gate Contact Sensors:
    These sensors ensure that the gate is properly closed and locked for security purposes. They can detect whether the gate has reached its fully closed position and whether it is securely locked. While not directly a safety feature for preventing injuries, they are crucial for maintaining the security integrity of a property.




  5. Motion Sensors:
    Motion sensors can detect movement in the vicinity of the gate and can be set up to trigger different responses. For instance, a motion sensor might cause the gate to open if it detects a car approaching, or it could keep the gate open if it senses that there is still movement in its vicinity, preventing the gate from closing prematurely on people or vehicles.




Each type of sensor plays a vital role in the safe operation of electric gates. Infrared sensors and pressure sensors directly contribute to preventing accidents, while loop detectors and motion sensors enhance the functionality and user-friendliness of automated gate systems. Gate contact sensors, while primarily security-focused, also contribute indirectly to safety by ensuring that gates are not left inadvertently open.


When installing electric gates, it is important to consider which combinations of these sensors are most appropriate for the specific environment and usage needs, to maximize both safety and efficiency. Proper installation and regular maintenance of these sensors are also crucial to ensure they function correctly and continue to provide safety and security for all users.

Installation Guidelines for Electric Gate Safety Sensors


Installation Guidelines for Electric Gate Safety Sensors


Electric gate safety sensors are a critical component of automated gate systems, providing essential safety features that prevent accidents and ensure the smooth operation of the gate. When installing these sensors, it is crucial to adhere to specific guidelines to maintain functionality and optimize safety. This essay outlines the key steps and considerations in the installation of safety sensors for electric gates.


Understanding Safety Sensor Types


Before installation begins, it is important to understand the different types of safety sensors available. The most common are infrared photo beam sensors, which create an invisible line across the gate. If this line is interrupted, the sensor signals the gate to stop moving. Other types include pressure sensors, which detect weight or pressure against the gate, and contact sensors, which provide alerts when a physical contact is made.


Choosing the Right Location


The effectiveness of safety sensors largely depends on their placement. Sensors should be installed where they can best detect obstructions to the gates operation. For sliding gates, sensors are typically placed on both sides of the gate, near the ground where they can detect both vehicles and pedestrians. For swing gates, sensors should be positioned near the hinge and on the opposite side, covering any areas where someone could potentially be hit.


Installation Process




  1. Read the Manufacturer's Instructions: Always start by reading the manufacturer's manual. Each model of sensor may have specific requirements or limitations that are crucial for proper operation.




  2. Mount the Sensors: Install the sensors at the recommended height, usually not more than 6 inches above the ground. Ensure they are securely mounted and aligned directly across from each other if using beam sensors.




  3. Wire the Sensors: Connect the sensors to the gate's control box. This typically involves running wires from each sensor back to the main controller. It's important to protect these wires from damage by using conduit or by burying them underground.




  4. Test the Sensors: After installation, thoroughly test the sensors before regular use. Open and close the gate to ensure that the sensors stop the gate operation when an obstruction is detected. Make adjustments to the sensor alignment and sensitivity as needed.




Consider Environmental Factors


Environmental conditions can affect sensor operation. For instance, sensors might need recalibration or realignment after extreme weather conditions such as heavy rain, snow, or dust storms. Additionally, ensure that the sensors are clear of debris, leaves, and dirt, which could obstruct their lenses or mechanisms.


Regular Maintenance


Regular maintenance is vital to ensure long-term functionality and safety. Periodically check and clean the sensors, test their operation, and check all connections and wirings. Its advisable to schedule a professional inspection annually or according to the manufacturer's recommendations.


Safety Compliance


Finally, ensure that all installations comply with local safety standards and regulations. This might include specific requirements about the types of sensors used or their placement. Adherence to these regulations not only promotes safety but also avoids legal issues that could arise from non-compliance.


Conclusion


The installation of safety sensors on electric gates is not just about following technical instructions; it's about ensuring the safety and security of users at all times. By carefully selecting the right type of sensors, installing them in appropriate locations, and maintaining them regularly, you can significantly enhance the safety of your automated gate system. Remember that these guidelines not only protect property but, more importantly, save lives.

Maintenance and Troubleshooting of Electric Gate Safety Sensors


Maintenance and Troubleshooting of Electric Gate Safety Sensors


Electric gate safety sensors are a crucial component of modern automated gate systems, providing essential safety features that prevent accidents and ensure smooth operation. These sensors are designed to detect obstructions in the path of a closing gate and trigger the system to stop or reverse the movement, thereby avoiding potential harm to vehicles, individuals, or pets that might be in the way. Given the critical role these sensors play, regular maintenance and effective troubleshooting are vital to their reliable performance.


Maintenance of Electric Gate Safety Sensors


Regular maintenance of safety sensors is key to prolonging their lifespan and maintaining their functionality. Here are some essential maintenance tips:




  1. Regular Cleaning: Safety sensors are often exposed to the elements, which can lead to the buildup of dust, dirt, and debris. It is important to clean the sensors regularly using a soft cloth or brush to remove any obstructions that might interfere with their operation. In some environments, spider webs, leaves, or even snow can cover the sensors, necessitating more frequent cleaning.




  2. Alignment Checks: Misalignment of the sensors is a common issue due to accidental bumps or natural shifting over time. Regularly check that the sensors are properly aligned as per the manufacturers specifications. Most sensors have an indicator light that helps determine if they are correctly aligned.




  3. Wiring Inspections: Over time, the wiring of the sensors can become frayed or disconnected due to wear and tear or environmental factors. Periodically inspect the wires and connections for any signs of damage and ensure they are securely connected. Consider consulting a professional if any rewiring or electrical repairs are needed.




  4. Functional Testing: It is advisable to test the gates safety mechanism regularly to ensure that the sensors are working correctly. This can be done by intentionally placing an obstacle in the path of the gate to see if it stops and reverses as expected.


    Troubleshooting Electric Gate Safety Sensors




Despite regular maintenance, issues can arise that require troubleshooting. Here are some common problems and their potential solutions:




  1. Gate Does Not Stop or Reverse: If the gate fails to stop or reverse when an obstacle is detected, first check if there are any obstructions blocking the sensors. Next, verify the alignment and clean the sensor lenses. If the problem persists, inspect the wiring for any issues and test the sensor functionality.




  2. False Alarms: Sometimes, a gate may stop or reverse without any visible obstruction. This can be caused by overly sensitive settings or minor obstructions like small debris or insects close to the sensor. Adjust the sensor sensitivity if possible and ensure the area around the sensors is clear.




  3. No Power to Sensors: If the sensors appear unresponsive, check whether they are receiving power. Verify that all connections are secure and that no fuses have blown in the circuit. If the sensors are battery-operated, check the battery level and replace the batteries if necessary.




  4. Intermittent Operation: This may be caused by loose wiring or environmental interference. Ensure all connections are tight and shielded from environmental factors where possible. Additionally, check for any nearby devices that might be causing electromagnetic interference.




In conclusion, the maintenance and troubleshooting of electric gate safety sensors are critical to ensuring the safety and proper functioning of automated gate systems. Regular maintenance helps prevent many common issues, while effective troubleshooting can quickly resolve problems that do arise, keeping the system operational and safe for all users.

Future Developments in Safety Sensor Technology for Electric Gates


Safety sensors are a critical component in the operation of electric gates, ensuring that these automated systems offer not just convenience but also high levels of safety to prevent accidents and injuries. As technology advances, the future developments in safety sensor technology for electric gates are anticipated to bring significant enhancements that will improve both functionality and security.


One of the key areas of focus is the integration of more sophisticated sensor technologies that can detect a wider range of obstacles. Current sensors are primarily designed to detect motion or large physical obstructions. However, future sensors could utilize advanced radar and lidar technologies, which offer better detection capabilities of both static and moving objects, regardless of lighting conditions. This improvement could drastically reduce the risk of accidents, particularly in environments where children and pets are present.


Another promising development is the increased use of artificial intelligence (AI) and machine learning in safety sensors. AI can enable sensors to analyze and learn from data, thereby improving their decision-making processes over time. For instance, AI-enabled sensors could differentiate between an intruding animal and a human, or recognize the difference between a vehicle stopping temporarily and a permanent obstacle. This capability would allow electric gates to operate more intelligently, reducing false alarms and enhancing their overall safety performance.


Connectivity and the Internet of Things (IoT) are also set to play a crucial role in the evolution of safety sensor technology. With IoT integration, sensors could communicate not only with the gate controller but also with other home automation systems. This connectivity could enable scenarios where the gate only opens when both the sensor system and a connected home security camera recognize the car or individual attempting to enter. Additionally, IoT could facilitate remote monitoring and control, allowing homeowners to manage gate operations from their smartphones, enhancing both convenience and security.


Moreover, the future may see the development of more resilient and energy-efficient sensors. As sustainability becomes a more pressing concern, finding ways to reduce the power consumption of safety sensors without compromising their effectiveness will be crucial. Technologies such as energy harvesting, where sensors gather energy from environmental sources (like solar power), could help in powering sensors, thereby reducing their environmental footprint.


Lastly, the standardization of safety protocols across sensor technologies could enhance safety outcomes. By developing and adhering to international safety standards, manufacturers can ensure that safety sensors provide reliable and consistent protection. This standardization can also help in simplifying the integration of new sensor technologies as they develop.


In conclusion, the future of safety sensor technology for electric gates looks promising, with advancements in AI, IoT, energy efficiency, and sensor capabilities. These developments not only aim to enhance the safety and convenience of electric gates but also integrate them more seamlessly into the fabric of smart home technologies. As these technologies evolve, it is imperative that they are developed with an emphasis on reliability, user-friendliness, and sustainability to meet the future needs of secure, automated home entry systems.

Types of Safety Sensors for Electric Gates

Gates is the plural of gate, a point of entry to a space which is enclosed by walls. It may also refer to:

People

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Places

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Canada

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United States

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Arts and entertainment

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Other uses

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See also

[edit]
A wooden fence
During the Cold War, West German trains ran through East Germany. This 1977 view shows how East German authorities placed fences near the tracks to keep potential defectors at bay

A fence is a structure that encloses an area, typically outdoors creating a boundary, and is usually constructed from posts that are connected by boards, wire, rails or netting.[1] A fence differs from a wall in not having a solid foundation along its whole length.[2]

Alternatives to fencing include a ditch (sometimes filled with water, forming a moat).

Types

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Typical agricultural barbed wire fencing
Sioux Mems Pro2
Split-rail fencing common in timber-rich areas
A chain-link wire fence surrounding a field
Portable metal fences around a construction site
A snow-covered vaccary fence near Ramsbottom in Greater Manchester, UK
Between fence and hedge: Acanthocereus tetragonus, laid out as a "living fence", rural area, Cuba

By function

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  • Agricultural fencing, to keep livestock in and/or predators out
  • Blast fence, a safety device that redirects the high energy exhaust from a jet engine
  • Sound barrier or acoustic fencing, to reduce noise pollution[3]
  • Crowd control barrier
  • Privacy fencing, to provide privacy and security [4]
  • Temporary fencing, to provide safety, security, and to direct movement; wherever temporary access control is required, especially on building and construction sites
  • Perimeter fencing, to prevent trespassing or theft and/or to keep children and pets from wandering away.
  • Decorative fencing, to enhance the appearance of a property, garden or other landscaping
  • Boundary fencing, to demarcate a piece of real property
  • Newt fencing, amphibian fencing, drift fencing or turtle fence, a low fence of plastic sheeting or similar materials to restrict movement of amphibians or reptiles.
  • Pest-exclusion fence
  • Pet fence, an underground fence for pet containment
  • Pool fence
  • Snow fence
  • School fence
  • Solar fence
Security fence for schools in Korea

A balustrade or railing is a fence to prevent people from falling over an edge, most commonly found on a stairway, landing, or balcony. Railing systems and balustrades are also used along roofs, bridges, cliffs, pits, and bodies of water.

Another aim of using a fence is to limit intrusion. In support of these barriers there are sophisticated technologies that can be applied on the fence itself to strengthen the defence of an area, such as:

  • Detectors
  • Peripheral alarm control unit
  • Means of deterrence
  • Means for communicating information remotely
  • Remote alarm receiving unit

By construction

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  • Brushwood fencing, a fence made using wires on either side of brushwood, to compact the brushwood material together.
  • Chain-link fencing, wire fencing made of wires woven together
  • Chicane
  • Close boarded fencing, strong and robust fence constructed from mortised posts, arris rails and vertical feather edge boards
  • Composite Fencing, made from a mixture of recycled wood and plastic
  • Expanding fence or trellis, a folding structure made from wood or metal on the scissor-like pantograph principle, sometimes only as a temporary barrier
  • Ha-ha (or sunken fence)
  • Hedge, including:
  • Hurdle fencing, made from moveable sections
  • Pale fence, or "post-and-rail" fence, composed of pales - vertical posts embedded in the ground, with their exposed end typically tapered to shed water and prevent rot from moisture entering end-grain wood - joined by horizontal rails, characteristically in two or three courses.
  • Palisade, or stakewall, made of vertical pales placed side by side with one end embedded in the ground and the other typically sharpened, to provide protection; characteristically two courses of waler are added on the interior side to reinforce the wall.
  • Picket fences, generally a waist-high, painted, partially decorative fence
  • Roundpole fences, similar to post-and-rail fencing but more closely spaced rails, typical of Scandinavia and other areas rich in raw timber.
    Slate fencing in Mid-Wales
  • Slate fence, a type of palisade made of vertical slabs of slate wired together. Commonly used in parts of Wales.
  • Split-rail fence, made of timber, often laid in a zig-zag pattern, particularly in newly settled parts of the United States and Canada
  • Vaccary fence (named from Latin vaca - cow), for restraining cattle, made of thin slabs of stone placed upright, found in various places in the north of the UK where suitable stone is had.[5]
  • Vinyl fencing
  • Solid fences, including:
    • Dry-stone wall or rock fence, often agricultural
    • Stockade fence, a solid fence composed of contiguous or very closely spaced round or half-round posts, or stakes, typically pointed at the top. A scaled down version of a palisade wall made of logs, most commonly used for privacy.
  • Wattle fencing, of split branches woven between stakes.
  • Wire fences
  • Wood-panel fencing, whereby finished wood planks are arranged to make large solid panels, which are then suspended between posts, making an almost completely solid wall-like barrier. Usually as a decorative perimeter.
  • Wrought iron fencing, also known as ornamental iron
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A typical urban fence

In most developed areas the use of fencing is regulated, variously in commercial, residential, and agricultural areas. Height, material, setback, and aesthetic issues are among the considerations subject to regulation.

Required use

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Typical chain link perimeter fence with barbed wire on top

The following types of areas or facilities often are required by law to be fenced in, for safety and security reasons:

  • Facilities with open high-voltage equipment (transformer stations, mast radiators). Transformer stations are usually surrounded with barbed-wire fences. Around mast radiators, wooden fences are used to avoid the problem of eddy currents.
  • Railway lines (in the United Kingdom)
  • Fixed machinery with dangerous mobile parts (for example at merry go rounds on entertainment parks)
  • Explosive factories and quarry stores
  • Most industrial plants
  • Airfields and airports
  • Military areas
  • Prisons
  • Construction sites
  • Zoos and wildlife parks
  • Pastures containing male breeding animals, notably bulls and stallions.
  • Open-air areas that charge an entry fee
  • Amusement equipment which may pose danger for passers-by
  • Swimming pools and spas

History

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Mass concrete fence in Russia

Servitudes[6] are legal arrangements of land use arising out of private agreements. Under the feudal system, most land in England was cultivated in common fields, where peasants were allocated strips of arable land that were used to support the needs of the local village or manor. By the sixteenth century the growth of population and prosperity provided incentives for landowners to use their land in more profitable ways, dispossessing the peasantry. Common fields were aggregated and enclosed by large and enterprising farmers—either through negotiation among one another or by lease from the landlord—to maximize the productivity of the available land and contain livestock. Fences redefined the means by which land is used, resulting in the modern law of servitudes.[7]

Buck-and-rail fencing such as this in West Virginia was ubiquitous in the Eastern Theater of the American Civil War, as it was easily made as long as there was plenty of timber readily available. Soldiers from both sides of the war made use of wood from these fences for their camp fires.
A wattle fence at Sanok-Skansen outdoor museum in Poland

In the United States, the earliest settlers claimed land by simply fencing it in. Later, as the American government formed, unsettled land became technically owned by the government and programs to register land ownership developed, usually making raw land available for low prices or for free, if the owner improved the property, including the construction of fences. However, the remaining vast tracts of unsettled land were often used as a commons, or, in the American West, "open range" as degradation of habitat developed due to overgrazing and a tragedy of the commons situation arose, common areas began to either be allocated to individual landowners via mechanisms such as the Homestead Act and Desert Land Act and fenced in, or, if kept in public hands, leased to individual users for limited purposes, with fences built to separate tracts of public and private land.[8]

United Kingdom

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Generally

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Ownership of a fence on a boundary varies. The last relevant original title deed(s) and a completed seller's property information form may document which side has to put up and has installed any fence respectively; the first using "T" marks/symbols (the side with the "T" denotes the owner);[9] the latter by a ticked box to the best of the last owner's belief with no duty, as the conventionally agreed conveyancing process stresses, to make any detailed, protracted enquiry.[10] Commonly the mesh or panelling is in mid-position. Otherwise it tends to be on non-owner's side so the fence owner might access the posts when repairs are needed but this is not a legal requirement.[11] Where estate planners wish to entrench privacy a close-boarded fence or equivalent well-maintained hedge of a minimum height may be stipulated by deed. Beyond a standard height planning permission is necessary.

The hedge and ditch ownership presumption

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Where a rural fence or hedge has (or in some cases had) an adjacent ditch, the ditch is normally in the same ownership as the hedge or fence, with the ownership boundary being the edge of the ditch furthest from the fence or hedge.[12] The principle of this rule is that an owner digging a boundary ditch will normally dig it up to the very edge of their land, and must then pile the spoil on their own side of the ditch to avoid trespassing on their neighbour. They may then erect a fence or hedge on the spoil, leaving the ditch on its far side. Exceptions exist in law, for example where a plot of land derives from subdivision of a larger one along the centre line of a previously existing ditch or other feature, particularly where reinforced by historic parcel numbers with acreages beneath which were used to tally up a total for administrative units not to confirm the actual size of holdings, a rare instance where Ordnance Survey maps often provide more than circumstantial evidence namely as to which feature is to be considered the boundary.

Fencing of livestock

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On private land in the United Kingdom, it is the landowner's responsibility to fence their livestock in.[13] Conversely, for common land, it is the surrounding landowners' duty to fence the common's livestock out such as in large parts of the New Forest. Large commons with livestock roaming have been greatly reduced by 18th and 19th century Acts for enclosure of commons covering most local units,[14] with most remaining such land in the UK's National Parks.

Fencing of railways

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A 19th-century law requires railways to be fenced to keep people and livestock out.[15] It is also illegal to trespass on railways, incurring a fine of up to £1000.

United States

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Distinctly different land ownership and fencing patterns arose in the eastern and western United States. Original fence laws on the east coast were based on the British common law system, and rapidly increasing population quickly resulted in laws requiring livestock to be fenced in. In the west, land ownership patterns and policies reflected a strong influence of Spanish law and tradition, plus the vast land area involved made extensive fencing impractical until mandated by a growing population and conflicts between landowners. The "open range" tradition of requiring landowners to fence out unwanted livestock was dominant in most of the rural west until very late in the 20th century.[16] Even today, a few isolated regions of the west still use the open range system.[17] More recently, fences are generally constructed on the surveyed property line as precisely as possible. Today, across the nation, each state can develop its own laws regarding fences. In many cases for both rural and urban property owners, the laws were designed to require adjacent landowners to share the responsibility for maintaining a common boundary fenceline, for example in California.[18] Today, however, only 22 states have retained that provision. In Texas a landowner has no legal obligation to share in the costs or future maintenance of a fence built by his or her neighbor, unless previously agreed. There is no specific statutes but court cases have set this legal precedent.[19]


Some U.S. states, including Texas, Illinois, Missouri, and North Carolina, have enacted laws establishing that purple paint markings on fences (or trees) are the legal equivalent of "No Trespassing" signs. The laws are meant to spare landowners, particularly in rural areas, from having to continually replace printed signs that often end up being stolen or obliterated by the elements.[20]

Hungary

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Reed fence at Lake Balaton

Along the shores of Lake Balaton, reed fences are often used to separate holiday cottages.

Cultural value of fences

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A fence in Thavakkara, India

The value of fences and the metaphorical significance of a fence, both positive and negative, has been extensively utilized throughout western culture. A few examples include:

  • "Good fences make good neighbors." – a proverb quoted by Robert Frost in the poem "Mending Wall"
  • "A good neighbor is a fellow who smiles at you over the back fence, but doesn't climb over it." – Arthur Baer
  • "There is something about jumping a horse over a fence, something that makes you feel good. Perhaps it's the risk, the gamble. In any event it's a thing I need." – William Faulkner
  • "Fear is the highest fence." – Dudley Nichols
  • "To be fenced in is to be withheld." – Kurt Tippett
  • "What have they done to the earth? / What have they done to our fair sister? / Ravaged and plundered / and ripped her / and bit her / stuck her with knives / in the side of the dawn / and tied her with fences / and dragged her down." – Jim Morrison, of The Doors
  • "Don't Fence Me In" – Cole Porter
  • "You shall build a turtle fence." – Peter Hoekstra
  • "A woman's dress should be like a barbed-wire fence: serving its purpose without obstructing the view." – Sophia Loren

See also

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References

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Notes

  1. ^ Patrick Hanks, ed. (1985). Collins Dictionary of the English Language. William Collins Sons & Co. Ltd. p. 534. ISBN 0-00-433078-1.
  2. ^ Dr D G Hessayon (1992). The Garden DIY Expert. pbi publications. p. 5. ISBN 0-903505-37-1.
  3. ^ Guinness, Bunny (12 August 2009). "How to keep those noisy neighbours at bay". telegraph.co.uk. Telegraph Media Group Limited. Archived from the original on 5 November 2015. Retrieved 1 November 2015.
  4. ^ "Privacy Fence". Privacy Fence. Archived from the original on 2014-02-26. Retrieved 2014-09-02.
  5. ^ "One Roofing Association". Archived from the original on February 14, 2017. Retrieved October 27, 2016.
  6. ^ "=\Servitude". Merriam-Webster. Archived from the original on 2012-05-24. Retrieved 2012-06-15.
  7. ^ Jesse Dukeminer et al., Property, pp. 668-70 (6th ed. 2006)
  8. ^ "The Homestead Act of 1862". National Archives. 2016-08-15. Retrieved 2025-08-11.
  9. ^ "Which Fence Is Mine - 2025 Guide | Online Land Registry". onlinelandregistry.org.uk. Retrieved 2025-08-11.
  10. ^ "Who owns the fence?". www.higgsllp.co.uk. Retrieved 2024-08-15.
  11. ^ "Land Registry plans: boundaries (practice guide 40, supplement 3) - GOV.UK". www.gov.uk. Archived from the original on 2017-02-18. Retrieved 2017-02-17.
  12. ^ "House of Lords - Alan Wibberley Building Limited v. Insley". publications.parliament.uk. Archived from the original on July 8, 2017.
  13. ^ "What farmers need to know about fencing and the law". Farmers Weekly. 2017-01-26. Retrieved 2025-08-11.
  14. ^ "Enclosing the land". www.parliament.uk. Retrieved 2025-08-11.
  15. ^ "Railway Regulation Act 1842". www.legislation.gov.uk.
  16. ^ Kawashima, Yasuhide (2010-01-01). "Farmers, Ranchers, and the Railroad: The Evolution of Fence Law in the Great Plains, 1865–190". Great Plains Quarterly.
  17. ^ "Open Range and Fencing | Department of Agriculture". ag.colorado.gov. Retrieved 2025-08-11.
  18. ^ "Property Line & Fence Rules in California (2025 Brief Guide)". Schorr Law, A Professional Corporation. 2024-10-10. Retrieved 2025-08-11.
  19. ^ "Guides: Neighbor Law: Fences & Boundaries". guides.sll.texas.gov. Retrieved 2025-08-11.
  20. ^ Dan Evon (7 Sep 2016). "'Purple Paint' Trespass Warning". Snopes.

Bibliography

  • Encyclopædia Britannica (1982). Vol IV, Fence.
  • Elizabeth Agate: Fencing, British Trust for Conservation Volunteers, ISBN 0-946752-29-X
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  • The dictionary definition of fence at Wiktionary

 

 

Gate from Bucharest (Romania)
Art Nouveau gate of Castel Béranger (Paris)
Candi bentar, a typical Indonesian gate that is often found on the islands of Java and Bali

A gate or gateway is a point of entry to or from a space enclosed by walls. The word is derived from Proto-Germanic *gatan, meaning an opening or passageway.[1] Synonyms include yett (which comes from the same root word) and portal. The concept originally referred to the gap or hole in the wall or fence, rather than a barrier which closed it. Gates may prevent or control the entry or exit of individuals, or they may be merely decorative. The moving part or parts of a gateway may be considered "doors", as they are fixed at one side whilst opening and closing like one.[2]

A gate may have a latch that can be raised and lowered to both open a gate or prevent it from swinging.[3] Gate operation can be either automated or manual. Locks are also used on gates to increase security.

Larger gates can be used for a whole building, such as a castle or fortified town. Doors can also be considered gates when they are used to block entry as prevalent within a gatehouse.

Purpose-specific types of gate

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Japanese Torii at Itsukushima Shrine, a UNESCO World Heritage Site in Japan, where the Hindu goddess Saraswati is worshipped as the Buddhist-Shinto goddess Benzaiten
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See also

[edit]

References

[edit]
  1. ^ "gate | Origin and meaning of gate by Online Etymology Dictionary". www.etymonline.com. Retrieved 2025-06-15.
  2. ^ "GATE | meaning in the Cambridge English Dictionary". dictionary.cambridge.org. Retrieved 2019-04-20.
  3. ^ "Hardware 101: Gate Latches". Gardenista. 2016-11-17. Retrieved 2019-04-20.
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Maayan Bokovza

(5)

Exceptional Service from Evergreen Gates! I recently had an electric gate installed by Evergreen Gates, and the experience was fantastic from start to finish. Adam was incredibly professional, knowledgeable, and helpful throughout the entire process. He took the time to understand my needs, provided great recommendations, and ensured everything was done with precision and care. The gate itself is high-quality, both in materials and craftsmanship. The automation system works flawlessly, and the installation was completed efficiently without any issues. Adam also made sure I understood how to operate and maintain the system, which I really appreciated. If you’re looking for a reliable and skilled electric gate company, Evergreen Gates is the way to go. I highly recommend them and will definitely use them again in the future!

Jame Mcguire

(5)

The fence contractor did an incredible job from start to finish. The team was professional, punctual, and paid close attention to every detail during installation. They helped me select the best materials for durability and design, and the final result looks beautiful and sturdy. The entire process was smooth, affordable, and exceeded my expectations—I couldn’t be happier with the outcome!

Matt Booty

(5)

Project involved replacing 300+ feet of 7 foot high wooden fence that was 20+ years old and built by previous owners. Evergreen removed all of the existing fence and installed custom 7 foot high metal fence sections, 3 gates and a custom double gate main entry. The ground slopes several feet across the fenced area, and Evergreen did a great job stepping the fence to match the terrain. The fence needed to be installed through and around existing landscaping, and they were very careful to not damage any existing fruit trees, shrubs, etc. The crew was extremely nice and professional and great to work with. Logan and the crew went out of their way to come up with solutions and make sure everything was as desired. The final installation looks great and will likely last decades. Good people and good results.

Kabir Dhawan

(5)

Our gate was barely functioning before and now it works great. It’s smart-enabled too! Logan was very approachable and professional throughout the entire process. The team completed everything within a day, which was faster than we expected. We’re really happy with the result.

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wood fences
47.396975715445, -122.2673012464
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Safety sensors are devices installed on electric gates to detect obstructions in their path, preventing the gate from closing on vehicles, people, or objects and thereby avoiding damage or injury.
Safety sensors typically work by using infrared beams or pressure sensors. When the beam is interrupted by an obstruction or pressure is detected, the sensor sends a signal to the gate controller to stop or reverse its motion.
Yes, in many regions, having safety sensors on electric gates is a legal requirement to comply with safety standards and regulations. This is to ensure the safe operation of automatically moving gates.
The most common types include infrared photo-eye sensors, which detect objects through beam interruption, and contact sensors, which react to physical contact with an object. Ground loop sensors, which detect disturbances in electromagnetic fields caused by metal objects, are also used especially for vehicle detection.
Safety sensors should be tested regularly, typically once a month, to ensure they are functioning correctly. They require maintenance at least once a year or according to the manufacturers instructions to keep them operational and effective.