CN104851224A - Electronic fence at construction site - Google Patents
Electronic fence at construction site Download PDFInfo
- Publication number
- CN104851224A CN104851224A CN201510292160.2A CN201510292160A CN104851224A CN 104851224 A CN104851224 A CN 104851224A CN 201510292160 A CN201510292160 A CN 201510292160A CN 104851224 A CN104851224 A CN 104851224A
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- alarm
- electronic fence
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- detection
- control
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 230000003750 conditioning effect Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000013459 approach Methods 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000003086 colorant Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses an electronic fence at a construction site. The electronic fence comprises a fence rail housing, a base plate fixation device, a detection device, a control device, an alarm device and a power supply device. The detection device is used for detecting whether a non-staff person enters at a preset distance of the electronic fence at a set direction at the construction site, generating a detection signal according to a detection result, and sending the detection signal to the control device; the control device is used for generating a control signal based on the detection signal and sending the control signal to the alarm device; the alarm device is used for carrying out alarming based on the control signal; and the power supply device is used for provide a power supply for the detection device, the control device, and the alarm device. According to the disclosed electronic fence, people who want to approach the electronic fence area of the construction site and the maintenance staff working in the fence can be effectively prompted and warned, thereby realizing the good isolation and prompting effect; and thus the safety warning effect is obviously improved.
Description
Technical Field
The invention relates to the technical field of safety protection of construction sites, in particular to an electronic fence for a construction site.
Background
In real life, when a worker performs a job in one job site, it is generally necessary to arrange fences around the job site. For example, in the power industry, when a power system is overhauled or tested, fences are arranged around an operation area, and the purpose of the fences is to isolate the operation area, prevent non-operators from entering the operation area and interfering normal work of the maintainers or damaging equipment; on the other hand, the operation area in the fence area may have high-voltage equipment or other equipment causing personal injury, and the non-operating personnel is warned to forbid entering.
In the prior art, a common fence mainly comprises an insulating telescopic fence and a safety belt type fence, and the working principles of the insulating telescopic fence and the safety belt type fence draw attention of others according to an isolation area and colors on the fence, so that a certain isolation and prompt effect is achieved, but the safety warning effect is general.
Therefore, how to provide warning effect for effectively improving the fence is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a construction site electronic fence which effectively reminds people trying to get close to a construction site electronic fence area and maintainers working in the fence, plays a good role in isolation and prompt, and obviously improves the safety warning effect.
In order to solve the technical problem, the invention provides a construction site electronic fence, which comprises a fence rod shell, a chassis fixing device, a detection device, a control device, an alarm device and a power supply device, wherein,
the detection device is used for detecting whether non-operating personnel enter the construction site electronic fence within a preset distance of a set direction, generating a detection signal according to a detection result and sending the detection signal to the control device;
the control device is used for generating a control signal according to the detection signal and sending the control signal to the alarm device;
the alarm device is used for giving an alarm according to the control signal;
and the power supply device is used for providing power for the detection device, the control device and the alarm device.
Preferably, the detection means comprises infrared transmitting means, infrared receiving means and processing means, wherein,
the infrared transmitting device is used for transmitting an infrared signal;
the infrared receiving device is used for receiving the infrared signal reflected by the non-operating personnel when the infrared signal meets the non-operating personnel;
and the processing device is used for generating a detection signal according to the reflected infrared signal and sending the detection signal to the control device.
Preferably, the control device comprises a microprocessor, a signal conditioning circuit and a peripheral circuit; wherein,
the signal conditioning circuit is used for receiving the detection signal, shaping and amplifying the detection signal, and transmitting the detection signal after shaping and amplifying to the microprocessor;
the microprocessor is used for generating a control signal according to the shaped and amplified detection signal;
and the peripheral circuit is used for sending the control signal to the alarm device.
Preferably, the alarm device comprises an audible alarm device and an alarm flash, wherein,
the sound alarm device is used for sending out sound alarm according to the control signal;
and the alarm flash lamp is used for carrying out flash alarm according to the control signal.
Preferably, the alarm means comprises audible alarm means, wherein,
and the sound alarm device is used for sending out sound alarm according to the control signal.
Preferably, the warning device comprises a warning flash, wherein,
and the alarm flash lamp is used for carrying out flash alarm according to the control signal.
Preferably, the power supply device is embodied as a battery.
Preferably, the preset distance of the set direction is 5 m.
Preferably, the disc fixation device is a disc or a vertebral body or a combination of a disc and a vertebral body.
Preferably, the enclosure rail housing and the chassis fixing means are a stainless steel enclosure rail housing and a stainless steel chassis fixing means, respectively.
The invention provides a construction site electronic fence which comprises a detection device, a control device, an alarm device and a power supply device on the basis of the prior art, wherein the detection device is used for detecting whether non-operating personnel enter the construction site electronic fence within a preset distance in a set direction, and when the non-operating personnel enter the construction site electronic fence, the control device controls the alarm device to give an alarm, so that personnel trying to approach the construction site electronic fence area and maintainers operating in the fence are effectively reminded, good isolation and prompt effects are achieved, and the safety warning effect is obviously improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a construction site electronic fence according to the present invention;
FIG. 2 is a schematic structural diagram of a detection device in an electronic fence of a construction site according to the present invention;
FIG. 3 is a schematic structural diagram of a control device in an electronic fence of a construction site according to the present invention;
FIG. 4 is a schematic structural diagram of a construction site electronic fence object provided in the present invention;
fig. 5 is a schematic view of an application structure of the construction site electronic fence object provided by the invention.
Detailed Description
The core of the invention is to provide the construction site electronic fence, which effectively reminds people trying to get close to the construction site electronic fence area and maintainers working in the fence, plays a good role in isolation and prompt, and obviously improves the safety warning effect.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic fence in a construction site according to the present invention, the electronic fence includes:
a railing housing 11, chassis fixing means 12, detecting means 13, control means 14, alarm means 15 and power supply means 16, wherein,
the detection device 13 is used for detecting whether non-operating personnel enter the construction site electronic fence within a preset distance in the set direction, generating a detection signal according to the detection result and sending the detection signal to the control device 14;
it will be appreciated that the sensing means 13 is mounted on the upper part of the enclosure rail housing 11 and is connected to the control means 14 by a cable. Of course, the specific installation position of the detection device 13 is not particularly limited in the present invention, as the case may be.
When an operator in the electronic fence on the construction site works, the detection device 13 detects whether a non-operator enters the electronic fence area within a preset distance (which may include other areas except the electronic fence area) in a set direction, and when the non-operator enters the electronic fence area, the detection device 13 generates a detection signal and sends the detection signal to the control device 14.
The preset distance may be set manually, and may be, for example, 3m or 5m, and the specific value is determined according to the actual situation.
A control device 14 for generating a control signal according to the detection signal and sending the control signal to an alarm device 15;
the control device 14 is installed inside the enclosure rail housing 11 and is composed of a microprocessor, a signal conditioning circuit and a peripheral circuit.
An alarm device 15 for giving an alarm according to the control signal;
the alarm device 15 is connected to the control device 14 via a cable.
And the power supply device 16 is used for supplying power to the detection device 13, the control device 14 and the alarm device 15.
The power supply 16 is mounted to the lower portion of the enclosure rail housing 11, but the present invention is not limited to the specific mounting position of the power supply 16, as the case may be.
After receiving the detection signal, the control device 14 generates a control signal for controlling the alarm device 15 to alarm according to the detection signal, and sends the control signal to the alarm device 15, and the alarm device 15 gives an alarm after receiving the control signal.
The invention provides a construction site electronic fence which comprises a detection device, a control device, an alarm device and a power supply device on the basis of the prior art, wherein the detection device is used for detecting whether non-operating personnel enter the construction site electronic fence within a preset distance in a set direction, and when the non-operating personnel enter the construction site electronic fence, the control device controls the alarm device to give an alarm, so that personnel trying to approach the construction site electronic fence area and maintainers operating in the fence are effectively reminded, good isolation and prompt effects are achieved, and the safety warning effect is obviously improved.
On the basis of the above embodiment, more specifically:
referring to fig. 2 and 4, fig. 2 is a schematic structural diagram of a detection device in an electronic fence of a construction site according to the present invention; fig. 4 is a schematic structural diagram of a construction site electronic fence object provided by the invention.
The detection device 13 includes:
infrared transmitting means 131, infrared receiving means 132, and processing means 133, wherein,
an infrared transmitting device 131 for transmitting an infrared signal;
an infrared receiving device 132 for receiving the infrared signal reflected by the non-operator when the infrared signal encounters the non-operator;
and a processing device 133 for generating a detection signal according to the reflected infrared signal and sending the detection signal to the control device 14.
It can be understood that the infrared transmitting device 131 sends out an infrared signal, when the infrared signal meets an obstacle, such as a non-operator, in a preset direction and within a preset distance outside the electronic fence area, the infrared signal is reflected back by the obstacle, the infrared receiving device 132 receives the reflected infrared signal and sends the reflected infrared signal to the processing device 133, and the processing device 133 generates a detection signal and sends the detection signal to the control device 14.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a control device in an electronic fence on a construction site according to the present invention. The control device 14 includes:
a microprocessor 142, a signal conditioning circuit 141, and peripheral circuits 143; wherein,
the signal conditioning circuit 141 is used for receiving the detection signal, shaping and amplifying the detection signal, and transmitting the shaped and amplified detection signal to the microprocessor 142;
a microprocessor 142 for generating a control signal according to the shaped and amplified detection signal;
and a peripheral circuit 143 for transmitting a control signal to the alarm device 15.
More specifically, the alarm device 15 includes an audible alarm device 15 and an alarm flash, wherein,
an acoustic alarm device 15 for emitting an acoustic alarm in accordance with the control signal;
and the alarm flash lamp is used for carrying out flash alarm according to the control signal.
It is understood that the sound alarm device 15 may include a voice chip, and the voice of the alarm is pre-recorded by the voice chip. Of course, the sound alarm device 15 may be a buzzer, and the present invention is not limited thereto, and the sound alarm device 15 capable of emitting a sound alarm is within the protection scope of the present invention.
In addition, the alarm flash lamp can adopt a yellow luminous tube and is arranged in a yellow transparent plastic outer cover. Of course, the alarm flash lamp may be in other colors, and the invention is not particularly limited to the specific form.
When no non-operating personnel approach the electronic fence area within the preset direction distance, the alarm flash lamp flickers at the frequency of 1Hz, and when no non-operating personnel approach the electronic fence area within the preset direction distance, the light-emitting body flickers at the frequency of 5Hz, and the sound alarm device 15 gives out a sound alarm to prompt. Of course, the present invention is not limited to how to implement the present invention, and for example, the warning flash lamp may not flash when no non-operator approaches, or may flash again only when a non-operator approaches, and the specific frequency of flashing is not limited to any particular frequency, and may be set manually.
It should be noted that the alarm device 15 may only include the sound alarm device 15 or the alarm flash lamp, and the invention is not particularly limited herein as appropriate.
In particular, the power supply 16 may be a battery.
More specifically, the undercarriage fixing device 12 is a disc 121 or a vertebral body 122 or a combination of a disc 121 and a vertebral body 122.
It will be appreciated that when the undercarriage securing assembly 12 is a combination of the disc 121 and the vertebral body 122, the vertebral body 122 is free to disassemble to accommodate a variety of locations such as hard cement-covered ground or earth ground.
More specifically, the enclosure rail housing 11 and the chassis fixture 12 are a stainless steel enclosure rail housing and a stainless steel chassis fixture, respectively.
It will be appreciated that the materials of the enclosure rail housing 11 and the chassis fixing means 12 are stainless steel, which is durable and inexpensive.
Referring to fig. 5, fig. 5 is a schematic view of an application structure of a construction site electronic fence object provided by the present invention.
It is noted that the control means 14 are not shown in figure 5 because they are within the enclosure 11.
It should be noted that, in the present specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A construction site electronic fence is characterized by comprising a fence rod shell, a chassis fixing device, a detection device, a control device, an alarm device and a power supply device, wherein,
the detection device is used for detecting whether non-operating personnel enter the construction site electronic fence within a preset distance of a set direction, generating a detection signal according to a detection result and sending the detection signal to the control device;
the control device is used for generating a control signal according to the detection signal and sending the control signal to the alarm device;
the alarm device is used for giving an alarm according to the control signal;
and the power supply device is used for providing power for the detection device, the control device and the alarm device.
2. A job site electronic fence according to claim 1 wherein said detection means comprises infrared transmission means, infrared reception means and processing means, wherein,
the infrared transmitting device is used for transmitting an infrared signal;
the infrared receiving device is used for receiving the infrared signal reflected by the non-operating personnel when the infrared signal meets the non-operating personnel;
and the processing device is used for generating a detection signal according to the reflected infrared signal and sending the detection signal to the control device.
3. The jobsite electronics fence of claim 2, wherein the control means comprises a microprocessor, signal conditioning circuitry, and peripheral circuitry; wherein,
the signal conditioning circuit is used for receiving the detection signal, shaping and amplifying the detection signal, and transmitting the detection signal after shaping and amplifying to the microprocessor;
the microprocessor is used for generating a control signal according to the shaped and amplified detection signal;
and the peripheral circuit is used for sending the control signal to the alarm device.
4. A job site electronic fence according to any one of claims 1 to 3, wherein said alarm means comprises an audible alarm means and an alarm flash, wherein,
the sound alarm device is used for sending out sound alarm according to the control signal;
and the alarm flash lamp is used for carrying out flash alarm according to the control signal.
5. A job site electronic fence according to any one of claims 1 to 3, wherein said alarm means comprises an audible alarm means, wherein,
and the sound alarm device is used for sending out sound alarm according to the control signal.
6. A job site electronic fence according to any one of claims 1 to 3, wherein said alarm means comprises an alarm flash, wherein,
and the alarm flash lamp is used for carrying out flash alarm according to the control signal.
7. A job site electronic fence according to claim 4, wherein said power supply means is embodied as a battery.
8. The construction site electronic fence according to claim 4, wherein the predetermined direction distance is 5 m.
9. A job site electronic fence according to claim 1 wherein said chassis fixture is a disk or a cone or a combination of a disk and a cone.
10. A job site electronic fence according to claim 1 wherein said enclosure rail housing and said chassis fixture are a stainless steel enclosure rail housing and a stainless steel chassis fixture, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292160.2A CN104851224A (en) | 2015-06-01 | 2015-06-01 | Electronic fence at construction site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292160.2A CN104851224A (en) | 2015-06-01 | 2015-06-01 | Electronic fence at construction site |
Publications (1)
| Publication Number | Publication Date |
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| CN104851224A true CN104851224A (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510292160.2A Pending CN104851224A (en) | 2015-06-01 | 2015-06-01 | Electronic fence at construction site |
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| CN (1) | CN104851224A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139565A (en) * | 2015-09-13 | 2015-12-09 | 国家电网公司 | Warning fence with acousto-optic alarming function |
| CN106846693A (en) * | 2017-02-09 | 2017-06-13 | 国网浙江三门县供电公司 | One kind has electric risk notification device |
| CN107845219A (en) * | 2017-11-03 | 2018-03-27 | 国家电网公司 | A kind of fence of achievable warning function |
| CN107909758A (en) * | 2016-12-02 | 2018-04-13 | 国网山东省电力公司新泰市供电公司 | A kind of nearly electric operation alarming device and method |
| CN108346250A (en) * | 2018-04-26 | 2018-07-31 | 广东电网有限责任公司 | Fast assembling-disassembling fence and fence |
| CN112419565A (en) * | 2020-11-05 | 2021-02-26 | 国网上海市电力公司 | Job site entrance guard fence based on RFID technique |
| CN112562239A (en) * | 2020-12-24 | 2021-03-26 | 国网湖北省电力有限公司随州供电公司 | Portable electronic fence system with active defense function and defense method |
| CN115985025A (en) * | 2022-11-30 | 2023-04-18 | 北京东土泛联信息技术有限公司 | Electronic fence adjusting method and device, storage medium and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601567A (en) * | 2004-08-27 | 2005-03-30 | 刘江南 | Multifunction red infrared detector |
| US20070290122A1 (en) * | 2006-06-16 | 2007-12-20 | Hong Kong Applied Science And Technology Research Institute Co. Ltd. | Monitoring devices and intrusion surveillance devices |
| CN203630914U (en) * | 2013-12-05 | 2014-06-04 | 国网浙江杭州市余杭区供电公司 | Electronic-type electric power maintenance fence having acousto-optic alarm function |
| CN103927835A (en) * | 2014-04-15 | 2014-07-16 | 国家电网公司 | Intelligent safety rail for high-voltage test |
| CN203838831U (en) * | 2014-04-30 | 2014-09-17 | 国网浙江慈溪市供电公司 | Intelligent detection system |
| CN104464180A (en) * | 2013-09-23 | 2015-03-25 | 国家电网公司 | Straying alarm device |
-
2015
- 2015-06-01 CN CN201510292160.2A patent/CN104851224A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601567A (en) * | 2004-08-27 | 2005-03-30 | 刘江南 | Multifunction red infrared detector |
| US20070290122A1 (en) * | 2006-06-16 | 2007-12-20 | Hong Kong Applied Science And Technology Research Institute Co. Ltd. | Monitoring devices and intrusion surveillance devices |
| CN104464180A (en) * | 2013-09-23 | 2015-03-25 | 国家电网公司 | Straying alarm device |
| CN203630914U (en) * | 2013-12-05 | 2014-06-04 | 国网浙江杭州市余杭区供电公司 | Electronic-type electric power maintenance fence having acousto-optic alarm function |
| CN103927835A (en) * | 2014-04-15 | 2014-07-16 | 国家电网公司 | Intelligent safety rail for high-voltage test |
| CN203838831U (en) * | 2014-04-30 | 2014-09-17 | 国网浙江慈溪市供电公司 | Intelligent detection system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139565A (en) * | 2015-09-13 | 2015-12-09 | 国家电网公司 | Warning fence with acousto-optic alarming function |
| CN107909758A (en) * | 2016-12-02 | 2018-04-13 | 国网山东省电力公司新泰市供电公司 | A kind of nearly electric operation alarming device and method |
| CN106846693A (en) * | 2017-02-09 | 2017-06-13 | 国网浙江三门县供电公司 | One kind has electric risk notification device |
| CN107845219A (en) * | 2017-11-03 | 2018-03-27 | 国家电网公司 | A kind of fence of achievable warning function |
| CN108346250A (en) * | 2018-04-26 | 2018-07-31 | 广东电网有限责任公司 | Fast assembling-disassembling fence and fence |
| CN112419565A (en) * | 2020-11-05 | 2021-02-26 | 国网上海市电力公司 | Job site entrance guard fence based on RFID technique |
| CN112562239A (en) * | 2020-12-24 | 2021-03-26 | 国网湖北省电力有限公司随州供电公司 | Portable electronic fence system with active defense function and defense method |
| CN115985025A (en) * | 2022-11-30 | 2023-04-18 | 北京东土泛联信息技术有限公司 | Electronic fence adjusting method and device, storage medium and electronic equipment |
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Application publication date: 20150819 |