CN214123125U

CN214123125U - Dangerous point warning device for power line operation site

Info

Publication number: CN214123125U
Application number: CN202022831825.1U
Authority: CN
Inventors: 张健; 王伟利; 谢浩; 国大勇; 李和平
Original assignee: Chaoyang Power Supply Co Of State Grid Liaoning Electric Power Supply Co ltd; State Grid Corp of China SGCC
Current assignee: Chaoyang Power Supply Co Of State Grid Liaoning Electric Power Supply Co ltd; State Grid Corp of China SGCC
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-09-03
Anticipated expiration: 2030-12-01

Abstract

The utility model relates to a dangerous spot warning device of power line operation scene comprises microprocessor, memory, RFID radio frequency read write line, power supply circuit and casing. The RFID radio frequency reader-writer can form a micro wireless network with an external electronic device; the device is provided with a magnet which can control a magnetic control element in the power circuit so as to control the on-off of the circuit. The transmitting unit, the receiving unit and the power supply branch circuit of the memory circuit of the RFID radio frequency reader-writer in the circuit can be independently controlled to be switched on and switched off.

Description

Dangerous point warning device for power line operation site

Technical Field

The utility model relates to a power line operation personnel's on-the-spot safety guards guarantee field.

Background

The danger point warning device integrates the technologies of Internet of things, wireless communication and artificial intelligence, is matched with a field safety recognizer (Chinese utility model patent: recognizer and recognition method for electric power safety supervision) carried by field operating personnel, is arranged according to the definition of a field danger point, forms an annular electronic warning area taking the danger point as the origin, and prompts the operating personnel not to mistakenly enter the danger area so as to ensure the personal safety of the operating personnel.

In the electric power line accident operation field, except three important safety measures of power failure, electricity testing and ground wire hanging, various temporary, uncontrollable and random danger points still exist, for example: temporary earthwork construction, a cable well, a user standby power generation device, large-scale construction machinery entering a field, sudden changes in the field operation environment, and the like. Most of the dangerous points are often determined after people enter the field, and on-site safety guardians pay attention to the dangerous points. For years, the traditional extensive management and control mode is used all the time due to the technical development, management means and personnel responsibility, and the following results are caused:

1. different guardians understand differently the scene dangerous point definition, and the monitoring is not in place, makes some scene dangerous points overlooked.

2. The monitoring responsibility of individual guardians is not strong, the monitoring is not in place, and the accidents of personal injury and death and equipment damage caused by the monitoring are repeated in the past, which causes huge damage to the life safety of all levels of electric power departments and staff.

In order to deal with risk prevention and control of site dangerous points and guarantee safety of operation sites, all levels of electric power departments pay high attention all the time, but because advanced management and control measures and equipment are not provided, the traditional modes of visible labels, small-area isolation fences, warning lines and the like are still used at present to warn various site dangerous points. Although the supervision measures play a certain warning role, the safety warning effect is not ideal due to the fact that field layout is not flexible, and the supervision measures are not limited by factors such as an active pre-control function. Therefore, a portable dangerous point warning device with complete functions, simple and convenient use, flexible operation and reliable work is innovatively developed by adopting the modern electronic information technology, is applied to various electric power operation sites, really plays the warning roles of dangerous point risk pre-control and man-machine interaction, is a great respect to the physical and mental lives of site front-line operators and is also a sufficient guarantee for the overhaul and operation of electric power equipment.

At the beginning of design, the device fully considers practical conditions such as the current urban and rural power grid operation environment, personnel quality, line and equipment status situations and the like in China, summarizes and overcomes the defects of the same kind of existing technologies in the industry, and forms the existing terminal device integrating intelligent dangerous point identification, detection and alarm.

Disclosure of Invention

The utility model aims to provide a dangerous point warning device for the power line operation site, which is convenient to arrange; random response; man-machine one-way interaction; intelligently handling events; the early warning range is adjustable; the dangerous points can be randomly defined.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a dangerous point warning device of the operation scene of the power line, by the microprocessor circuit, the memory circuit, RFID radio frequency reader writer, power circuit and body make up, through the radio frequency transmission and receiving of the RFID radio frequency reader writer, can carry on the transmission and exchange of the data with devices such as the electronic device (safety identifier) or notebook computer with wireless reader writer of the external world, and therefore can make up a miniature wireless network; the outside of the shell of the device is also provided with a magnet, and a power circuit in the shell comprises a magnetic control element which can control the on-off of the power circuit of the device under the control of the magnet.

The micro wireless network can be an external electronic device (a safety identifier) and a dangerous point warning device; or an external electronic device (a safety identifier) and a plurality of danger point warning devices; or a plurality of external electronic devices (safety identifiers) and a dangerous point warning device; and a network consisting of a plurality of external electronic devices (safety identifiers) and a plurality of dangerous point warning devices.

The power supply circuit of the device also comprises a power supply control circuit, namely the power supply circuits of the transmitting unit, the receiving unit and the memory circuit of the RFID reader-writer are independent respectively, each path of the power supply circuit comprises a switch control element, and the switch control element controls the on-off of the circuits of all parts under the control of a microprocessor.

The magnet disposed outside the device case is mounted in a case fastened to a hanging hole of the device case with a fastening band.

If the danger point warning device is not arranged on the operation site, the box body provided with the magnet is attached to the shell of the device, so that the magnetic control element is controlled to work, and a power circuit of the device is disconnected; if the danger point warning device is arranged on a working site, the box body containing the magnet and the shell of the device are separately arranged, so that the magnetic control element restores the original state and a power supply circuit of the device is connected.

The magnetic control element is a reed switch relay.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a danger point warning device lays in the scene nimble, convenient, has improved the control rate of the various danger points in scene. Once a new danger source is found on site, an operator can timely arrange and monitor the new danger source by only timely laying a new danger point warning module prepared in advance or timely modifying the type of the danger source represented by the original danger point warning device, and timely avoid the injury of the new danger source to the operator, thereby ensuring the safety of the operator and equipment.

2. The traditional passive artificial management mode is changed, and the computer, the wireless communication technology and the information transmission technology are adopted to carry out active intelligent monitoring on various dangerous points (sources) in all power line operation fields; and timely reminding and warning the carelessness or the violation of regulations during the operation of the personnel.

3. According to electric power safety regulation and professional technical requirement, during the operation, will probably lead to the key point of any dangerous tendency to carry out the overall process management and control in the scene, the utility model discloses the technique fully cooperates with other safety measure, can improve on-the-spot safe risk management and control level, plays crucial effect to preventing because equipment and personnel that dangerous point management and control measure does not put in place and cause hurt.

Drawings

Fig. 1 is the utility model discloses a dangerous point warning device participates in the system composition schematic diagram of the dangerous point monitoring network who establishes the electric power line job site.

Fig. 2 is a block diagram showing the structure of the dangerous point warning device of the present invention.

Fig. 3 is a schematic view of the working flow of the dangerous point warning device of the present invention.

Detailed Description

The following describes the device for warning a dangerous spot in an electric power line work site in further detail with reference to the accompanying drawings.

As shown in fig. 1, it is the utility model discloses a dangerous point warning device participates in the system composition schematic diagram of the dangerous point monitoring network of electric power line job site. The utility model discloses a dangerous spot warning device plays the effect in sign danger source place as the terminal device of the bottom of monitoring network. The place where the warning device is placed means that a semispherical area with the place as a center and the distance where danger no longer exists as a radius is taken as a danger area. Within entering into this danger area when the operation personnel who carries safety identification ware, will receive the utility model discloses a dangerous spot warning device's warning suggestion, simultaneously, alarm information also can be received to the high in the clouds server, takes follow-up measures to avoid the emergence of personal injury accident or equipment accident.

As shown in fig. 2, the utility model discloses a dangerous point warning device's at electric power line job site structural diagram comprises microprocessor circuit, memory circuit, RFID radio frequency read write line, power supply circuit and casing. Through the radio frequency transmission and reception of the RFID radio frequency reader-writer, the data can be transmitted and exchanged with an external electronic device (a safety recognizer) or a notebook computer with a wireless reader-writer and the like, and therefore a micro wireless network can be formed; the outside of the shell of the device is also provided with a magnet, and a power circuit in the shell comprises a magnetic control element which can control the on-off of the power circuit of the device under the control of the magnet.

The power supply circuit of the device also comprises a power supply control circuit, namely the power supply circuits of the transmitting unit, the receiving unit and the memory circuit of the RFID reader-writer are independent respectively, each path of the power supply circuit comprises a switch control device, and the switch control device controls the on-off of the circuit under the control of the microprocessor.

If the danger point warning device is not arranged on the operation site, the box body provided with the magnet is attached to the shell of the device, so that the magnetic control element is controlled to work, and a power circuit of the device is disconnected; if the danger point warning device is arranged on an operation site, the box body for containing the magnet and the shell of the device are required to be separately arranged, so that the magnetic control element restores the original state, and a power supply circuit of the device is connected.

The magnetic control element is a reed switch relay.

The utility model discloses a dangerous spot warning device continues the function degree of depth of "an recognizer and identification method for electric power safety supervision" patent product, this time only is based on its system software that has applied for patent, newly increases an independent dangerous spot warning device (see dotted line portion of figure 1). The hardware and structure of the original patent product (security identifier) are not changed. When an operator carries the safety recognizer and enters the operation site, the carried safety recognizer and the dangerous point warning device arranged on the site form the power operation site random dangerous point risk pre-control Internet of things microgrid.

In order to reduce the power consumption of the dangerous point warning device, the device is provided with a power supply control circuit which takes a normally closed contact reed switch magnetic control element as a sensor. During the standby period when the device does not enter the field, the strong magnet box body tied on the hanging hole of the device shell is adsorbed on the shell of the device. Under the action of the magnetic field of the magnet, the contact of the reed switch is disconnected, and the power supply circuit is powered off; when the warning device works on site, the magnet is separated from the shell of the device and needs to be adsorbed on a magnetic conduction framework of a dangerous source or hung on the dangerous source as a fixed point, and at the moment, the reed switch is far away from the magnetic field of the magnet, so that the contact is closed, and the circuit of the device is electrified to work. After the field work is finished, the dangerous point device is detached and recycled, and the magnet is adsorbed on the shell of the device again, so that the contact of the reed switch is disconnected again, and the device stops supplying power. The circuit power supply control of the device is realized, and the working period of the battery of the device can be prolonged.

After the device enters the working state, firstly, the device carries out power-on self-check, and immediately enters the silent receiving state after the device determines that the device works normally, and receives the inquiry information sent by the field safety identifier within the effective communication distance at any time. Once receiving the inquiry information sent by a certain recognizer, the device starts an automatic response circuit immediately and sends a group of data messages to the periphery, wherein the data messages comprise: the information type, the unit to which the information belongs, the device number, the attribute of the hazard source, and the ambient temperature notify the outside of "the attribute belonging to the hazard point here". After the other side recognizer has received the complete message packet, the module automatically turns off the power supply of the information processing and transmitting unit, only keeps the receiving unit on duty for power supply, is in a dormant standby state, and waits for the next inquiry.

After entering the operation site with the site safety identifier, the worker automatically enters a dangerous point searching state and sends out inquiry information to the periphery at intervals of 1 time/second (the interval is adjustable within 1-10 seconds). And the recognizer receiving unit starts to operate. Receiving a complete frame of data message sent to a space by a dangerous point warning device arranged at a peripheral site dangerous source within a set effective communication distance, after analyzing the message attribute, calculating the distance value of a warning area between personnel and a dangerous point warning module by an identifier through the time difference between sent inquiry information and received response information, wherein the distance of the warning area is usually set to be adjustable within the range of 5-50 meters, and the distance within 5 meters is set to be a forbidden area. The intelligent judgment is carried out on the advancing intention and the trend of the personnel by using the intelligent alarm, a judgment result is made according to the distance and the danger degree of entering the warning area, then an alarm sound and language are sent out through the recognizer, and the attribute and the category of the danger point are warned and informed to the operating personnel, so that the personnel is reminded of going away; if the operating personnel continue to approach the forbidden area and the safety risk is increased, the identifier can improve the alarm level, strange the operator to leave immediately and report to the cloud upper computer. Once the operator leaves the dangerous area, the alarm is released immediately, and the recognizer continues to randomly search the next dangerous point.

This danger point warning device can use notebook computer adapted wireless read write line, through the RFID read write line of danger point warning device, carries out initialization setting to the following function of device:

1. the attribute of the dangerous point: the working attributes of the working team can be flexibly initialized and set by using 16-system codes according to the working objects of the working team and various frequently encountered attribute field temporary danger points. For example, 0x 00-cable wellhead; 0x01 — under crane jib; 0x 03-live box; 0x05 — unknown power supply; 0x 06-high fall object; 0x 07-tower hoisting site, etc. When the device is used on site, the device is only required to be temporarily fixed to a dangerous point corresponding to the property of the device. After the danger is relieved, the device can be immediately disassembled.

2. Effective area radius: the device can flexibly set the radius of the warning area according to the actual requirements on the site. The specific radius can be set to be a warning area with a circular area with the dangerous point as the center and any distance radius of 2-50 meters. The default value is designed to be 10 meters.

3. Message transmission interval: the device can randomly set the message sending interval according to the danger levels of the danger points with different risk coefficients. Generally, the sending intervals of different types of modules are set artificially according to the rule that the risk coefficient is increased and the sending interval is shortened. The method is beneficial for the recognizer to judge the site danger level according to different packet intervals, and the intelligent level and the judgment accuracy of the monitoring density are improved.

As shown in fig. 3, it is a system software workflow block diagram of the present invention.

The workflow node of the system software is described as follows:

1. and the field data processing platform receives the information of the field dangerous point warning device within a set distance through the local RFID reader-writer and sends the received data to the subprogram for processing.

2. First, determine if a person enters an "alert zone"? The subprogram starts to work only when entering the area in the radius of the distance (which can be set according to the danger degree) of the designated operation point; exiting beyond the guard zone distance, the function stops.

3. The identifier receives a plurality of warning module information packets at the same place, and the warning module information packets are respectively sequenced and processed according to a time division principle.

4. The device executes ISO/IEC 180000-4 RFID communication protocol.

5. Receiving and analyzing a data packet code, firstly extracting a UID field in the data packet: the sub-program defines UID-00 DF as the code of the danger point warning device. Determine if the received data packet contains the same set of codes? If so, the subroutine continues; otherwise, it is left alone.

6. The determination of the code in the "SUID" field of the received packet is continued. Defining: the 1 st field code is a module attribute, initially defined as hexadecimal 00- -FF. The following attributes are represented, respectively: 0x 00-wireline wellhead; 0x01 — under crane jib; 0x 03-live box; 0x05 — unknown power supply; 0x 06-high fall object; 0x 07-tower hoisting site, etc., according to special conditions on site, a notebook computer is matched with a wireless reader-writer, and any definition code and the name of a dangerous point are assigned and assigned to a warning device.

And 7, the SUID second field code is detection information of the battery power of the device. If the field safety recognizer analyzes the 'insufficient electric quantity' information in the received data packet, two times of voice alarm are sent out to urge to replace the battery in time.

8. And after the report is confirmed by the upper computer, the working process of the subprogram is ended, and the subprogram returns to the on-duty state.

The utility model discloses technical scheme's key point

1. Due to the adoption of the technology of the Internet of things, the problem of energy consumption reduction is the key. The utility model adopts the magnetic control technology, which solves the fixing problem of the device, and the device can be easily absorbed on any dangerous source on the surface of the magnetic conductive metal by the high magnetic conductive neodymium iron boron magnetic steel bound with the device; secondly, the problem of a power switch is solved, a danger point is relieved, and after the module is retracted, the magnetic steel is adsorbed on the shell of the device to trigger the action of the magnetic control element (reed pipe), so that the power supply of the device is turned off.

2. The device is matched with the prior utility model patent product-on-site safety recognizer for use, expands functions, forms a mode of machine-machine interaction and human-machine interaction, and carries out prejudgment and control on dangerous behaviors and risk avoidance of on-site operators.

3. The safety recognizer receives the information of the device through a machine-machine interaction mode and software calculation, the distance between an operator and a danger source and the advancing trend, and simultaneously carries out intelligent judgment, and finally carries out timely warning, warning and reporting on the operator entering a danger area according to the obtained conclusion.

Claims

1. A danger point warning device of an electric power line operation site is composed of a microprocessor circuit, a memory circuit, an RFID radio frequency reader-writer, a power supply circuit and a shell, and is characterized in that data transmission and exchange are carried out with an external electronic device safety identifier or a notebook computer with a wireless reader-writer through radio frequency transmission and reception of the RFID radio frequency reader-writer, and a micro wireless network is formed; the outside of the shell of the device is also provided with a magnet, and a power circuit in the shell comprises a magnetic control element which controls the on-off of the power circuit of the device under the control of the magnet.

2. The dangerous point warning device of the power line operation site as claimed in claim 1, wherein the micro wireless network is an external electronic device safety identifier and a dangerous point warning device; or one external electronic device safety recognizer and a plurality of danger point warning devices; or a plurality of external electronic device safety identifiers and a danger point warning device; or a network consisting of a plurality of external electronic device safety identifiers and a plurality of dangerous point warning devices.

3. The device as claimed in claim 1, wherein the power circuit further comprises a power control circuit, i.e. the power circuits of the transmitting unit, the receiving unit and the memory circuit of the RFID reader are independent, each of the power circuits comprises a switch control element, and the switch control element controls the on/off of each circuit under the control of the microprocessor.

4. The device as claimed in claim 1, wherein the magnet disposed outside the device case is installed in a case fastened to a hanging hole of the device case by a fastening band.

5. The device of claim 4, wherein the housing of the device and the housing of the device are placed together to allow the magnetic control element to operate under control to disconnect the power circuit of the device if the device is not located at the work site; if the danger point warning device is arranged on a working site, the box body containing the magnet and the shell of the device are separately arranged, so that the magnetic control element restores the original state and a power supply circuit of the device is connected.

6. The device as claimed in claim 1, wherein the magnetic control element is a reed switch relay.