CN209168129U - A kind of power cable tunnel operating personnel protection system based on wireless radio-frequency - Google Patents

Abstract

The utility model discloses a protection system for power cable tunnel operators based on radio frequency technology. The protection system comprises: an RFID construction card, an RFID reader and a monitoring center; the RIFD construction card is connected with the RFID reader through a radio frequency network, The RFID reader is connected to the monitoring center through a wireless communication network.

Description

A Power Cable Tunnel Worker Protection System Based on Radio Frequency Technology

technical field

The utility model relates to the technical field of the application of Internet of Things technology in power cable tunnels, in particular to a power cable tunnel operator protection system based on wireless radio frequency technology.

Background technique

With the development of cities and power grid construction, the spider web-like power distribution overhead lines and tower equipment can no longer meet the requirements of modern people for limited urban space and environmental aesthetics. The application of power cables is increasing, and the coverage of cable networks is constantly increasing. It has gradually become an irreplaceable main force in power grid construction. At present, the forms of cable laying mainly include direct burial, pipe row, cable trench and cable tunnel. Cable tunnels are more and more widely used because they do not occupy ground space, can be laid with multiple lines, are less affected by environmental climate, and have high safety. The requirements for laying, maintenance and overhaul of cable tunnel lines are also getting higher and higher, and it is urgent to strengthen the operation management of operators in cable tunnels. However, the laying, maintenance and overhaul of cables are underground operations, which have the characteristics of dark lighting, poor communication signals, poor natural ventilation, and many fire hazards. It is difficult to collect the location information of operators in the tunnel. The following problems exist:

1) Unable to supervise in real time: Many cable tunnels have a depth of more than ten meters to several tens of meters underground, with long lengths and poor communication signals. When workers work under the tunnels, managers cannot know the current location, progress and safety of underground operators.

2) Lack of effective access management: In large-scale cable tunnels, there is often an entrance and exit every tens of meters. In addition, there are often many people working at the same time in the laying, maintenance, and repair work in the tunnel, and there is a lack of effective access by operators. Management, when the entrance and exit are closed after the work is completed, it is impossible to know whether there are still workers in the tunnel.

3) Lack of effective protection measures for operators: The ventilation conditions under the tunnel are poor. Once the operator suffers from gas poisoning, hypoxia, or injury, it is often difficult to notify rescuers and monitoring centers in time, and it is impossible to detect, locate, and take measures in time. Effective rescue measures; the cable lines in the tunnel are densely covered, which is easy to cause fire. When a disaster occurs, the monitoring center cannot confirm the number and distribution of people in the tunnel in time due to the lack of reliable information in the tunnel, and it is difficult to formulate the optimal escape route and emergency measures. low efficiency.

Therefore, it is hoped that a power cable tunnel operator protection system based on radio frequency technology can solve the problems in the prior art.

Utility model content

The utility model discloses a power cable tunnel operator protection system based on radio frequency technology, through the radio frequency technology, combined with the communication network, the management personnel can locate every operator in the tunnel in the monitoring room, and grasp the work progress of the operator, Check whether the worker is working normally.

The utility model discloses a power cable tunnel operator protection system based on wireless radio frequency technology. The protection system comprises: an RFID construction card, an RFID reader and a monitoring center; the RIFD construction card is connected with the RFID reader through a wireless radio frequency network, The RFID reader is connected to the monitoring center through a wireless communication network.

Preferably, the RFID construction card is composed of a radio frequency tag and a first antenna; the radio frequency tag has a unique identification code; the first antenna starts the circuit work through the electromagnetic field energy generated by the second antenna, and sends a tape to the RFID reader. Radio waves with identification codes.

Preferably, the unique identification code of the radio frequency tag is mapped with the personal information of the operator.

Preferably, the RFID reader is composed of a second antenna, a radio frequency reading and writing module, an RSSI positioning module, a power supply module, a microprocessor and a first wireless communication module; the second antenna is respectively connected with the microprocessor and the radio frequency reading and writing module , send radio frequency signals to form an electromagnetic field, and receive the radio frequency signals returned by the first antenna; the radio frequency reading and writing module is an active reader, connected to a microprocessor, and continuously sends out low-frequency radio frequency signals, when wearing the RFID construction card. When personnel enter the coverage area of the radio frequency signal of the reader, the construction card receives the low frequency radio frequency signal sent by the RFID reader through the first antenna, and the RFID construction card transmits the high frequency carrier signal carrying the identification code after processing, and received by the second antenna; the RSSI positioning module is interconnected with the microprocessor, and judges the distance between the RFID construction card and the RFID reader according to the signal strength of the RFID construction card received, and combines the Installation location map to determine the specific location of the current operator; the power module is respectively connected with the microprocessor and the RSSI positioning module, the radio frequency reader is an active device, powered by the power supply cable in the tunnel; the microprocessor is connected to the radio frequency reading and writing module It is processed with the signal sent by the RSSI positioning module. When the RFID reader receives the radio frequency signal from the construction card, after being processed by the microprocessor, it sends the personnel information and position information to the monitoring center; when the operator's position information There is no change in a limited time, the microprocessor sends warning information to the monitoring processor, and the monitoring and management personnel need to confirm the safety of the operators in time; the first wireless communication module is a SIM card, and the first wireless communication module is connected to the microcomputer The processor sends the reader data information through the wireless communication network.

Preferably, the monitoring center is composed of a second wireless communication module, a data processing module, a data storage module and a monitoring display module; The data of the communication network is transmitted to the data processing module and the data storage module; the data processing module is interconnected with the data storage module, and connected to the monitoring display module, and the data processing module processes the received data in combination with the information in the data storage module, Send the processed data to the monitoring display module for display; the data storage module stores and manages the received data and processed data in a unified manner; the monitoring display module realizes real-time monitoring information, alarm information and Display of application analysis information.

The utility model realizes the application of the wireless radio frequency positioning technology in the cable tunnel through the installation and construction of the RFID construction card, the RFID reader and the monitoring processor, and integrates personnel tracking and positioning, access management, work progress management and personnel safety management. An integrated monitoring and management system. First of all, the power cable tunnel operator positioning monitoring system based on wireless radio frequency technology has a simple structure, easy installation and debugging, strong adaptability, not affected by climatic conditions, strong anti-interference ability, energy saving and environmental protection, which is conducive to the promotion of this technology in cable tunnels Secondly, effective and accurate location information is the basis for the positioning, tracking and rescue of workers in cable tunnels. The application of this device provides a strong guarantee for the safe operation of electric power enterprises, reduces accidents, improves management level, and enhances enterprise competition. It has a wide range of application value and practical significance.

Description of drawings

FIG. 1 is a schematic structural diagram of a power cable tunnel operator protection system based on wireless radio frequency technology of the present invention.

Figure 2 is a schematic diagram of the structure of the RFID construction card.

FIG. 3 is a schematic diagram of the structure of an RFID reader.

Figure 4 is a schematic diagram of the structure of the monitoring center.

FIG. 5 is a schematic diagram of a cable tunnel deployment structure.

Figure 6 is a flow chart of a power cable tunnel operator protection system based on radio frequency technology.

Detailed ways

In order to make the implementation purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings in the embodiments of the present utility model. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements or elements having the same or similar functions. The described embodiments are some, but not all, embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Taking a large power cable tunnel in a city as an example, the specific method for establishing a wireless radio frequency power cable tunnel operator positioning device is as follows:

As shown in Figure 1, the construction of this system is divided into three parts: RFID construction card (1), RFID reader (3), and monitoring center (5). The RIFD construction card (1) is connected with the RFID reader (3) through a wireless radio frequency network (2), and the RFID reader (3) is connected with the monitoring center (5) through a wireless communication network (4).

As shown in Figure 2, the RFID construction card (1) consists of a radio frequency tag (6) and an antenna A (7).

Radio frequency tag (6): It has a unique identification code, and the unique identification code is mapped with the personal information of the operator.

Antenna A (7): Used to start the circuit by obtaining enough energy in the electromagnetic field generated by the reader antenna, and to transmit radio waves with identification codes.

As shown in Figure 3, the RFID reader (3) consists of an antenna B (8), a radio frequency reading and writing module (9), an RSSI positioning module (10), a power supply module (11), a microprocessor (12), and a wireless communication module (13) It consists of six parts.

Antenna B (8): connected with the microprocessor (12) and the radio frequency read-write module (9), used for sending radio frequency signals to form an electromagnetic field, and receiving the radio frequency signals returned by the antenna A (7);

The radio frequency reading and writing module (9): connected with the antenna B (8) and the microprocessor (12), is an active reader and continuously emits low-frequency radio frequency signals. When the operator wearing the RFID construction card (1) enters the reader When the radio frequency signal covers the area, the construction card receives the low-frequency radio frequency signal sent by the reader through the antenna A (7). 8) Receive.

RSSI positioning module (10): connected to the microprocessor (12), and after receiving the signal of the RFID construction card (1), calculates the distance between the RFID construction card (1) and the RFID reader (3) according to the received signal strength The distance, combined with the installation location map of the reader, determine the specific location of the current operator.

The power supply module (11): connected with the microprocessor (12) and the RSSI positioning module (10), the wireless radio frequency reader is an active device and is powered by the power supply cable in the tunnel. The microprocessor (12): respectively connected with the other five Parts are connected, and the signals sent by the radio frequency reading and writing module (9) and the RSSI positioning module (10) are processed. When the RFID reader (3) receives the radio frequency signal from the construction card, after being processed by the microprocessor (12), it sends personnel information and position information to the monitoring center; when the operator's position information is always within a limited time If there is no change, the microprocessor (12) sends warning information to the monitoring processor, and the monitoring manager needs to confirm the safety situation of the operator in time.

Wireless communication module A (13): implemented by a SIM card, connected to the microprocessor (12), and used to send the reader data information through a wireless communication network.

As shown in Figure 4, the monitoring center (5) consists of four parts: a wireless communication module B (14), a data processing module (15), a data storage module (16), and a monitoring display module (17).

Wireless communication module B (14): connected to the data processing module (15) and the data storage module (16), for receiving data from the wireless communication network and transmitting to the data processing module and the data storage module.

A data processing module (15): connected with the wireless communication module B (14), the data storage module (16), and the monitoring display module (17), for combining the received data with the information integration application in the data storage module (16) analyze.

A data storage module (16): connected with the wireless communication module B (14), the data processing module (15), and the monitoring display module (17), and used for unified storage and management of the received data and the processed data.

The monitoring display module (17): realized by a large screen and a terminal display screen, connected with the data processing module (15) and the data storage module (16), and used for displaying real-time monitoring information, alarm information and application analysis information.

As shown in Fig. 5, the cable tunnel (18) has entrances and exits every 75 meters, and an RFID reader (19) is installed at each entrance and exit, and an RFID reader (19) is installed at a fixed position in the middle of the cable tunnel. Whenever the construction personnel enter the tunnel with the RFID construction card (20), they enter the coverage area of the RFID reader.

As shown in Figure 6: First, an RFID construction card (20) is issued for the operator who enters the cable tunnel. The construction card contains a unique identification code, and the operator must wear the construction card during construction;

Then, when the operator enters the tunnel, he must scan the RFID construction card (20) held by the RFID reader (19) at the tunnel entrance and exit to record the operator entering and leaving the cable tunnel;

Third, after entering the cable tunnel, the operator enters the signal coverage area of the RFID reader with the RFID construction card (20), the RFID reader (19) sends out a radio frequency signal to form an electromagnetic field, and after the RFID construction card (20) receives the radio frequency signal, Converting energy and sending the information stored in the RFID construction card (20) through radio frequency signals;

Fourth, after the RFID reader (19) located in the cable tunnel receives the radio frequency signal from the RFID construction card (20), it will perform positioning processing through the RSSI positioning module (10), and send the processed information through wireless signals Go out; if the RFID reader (19) determines that the location information of the operator has not changed within a limited time, it will send a warning message to the monitoring center (5), and the monitoring and management personnel need to confirm the safety of the operator in time;

Fifth, after the wireless communication module B (14) of the monitoring center (5) receives the wireless signal from the RFID reader (19), it processes, analyzes and stores, and displays it through the monitoring display module (17).

Through the above specific operation steps, the construction and application of the power cable tunnel operator positioning monitoring system based on the wireless radio frequency technology of the present invention can be realized. In the utility model, the RFID reader (19) is installed in the tunnel, and the RFID construction card (20) is issued to the operator, so as to realize the tracking and positioning of the operator in the tunnel, and the management personnel can accurately and efficiently grasp the position of the operator through the monitoring processor. information, job progress and safety status. The application of the utility model improves the supervision level of the operation in the cable tunnel, ensures the safety of the operators, and plays a positive role in promoting the intelligent management of the electric power enterprise.

Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and These modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (5)

1. a power cable tunnel operator protection system based on radio frequency technology, is characterized in that, described protection system comprises: RFID construction card, RFID reader and monitoring center; RIFD construction card is connected with RFID reader by radio frequency network , RFID reader is connected with monitoring center through wireless communication network. 2. The power cable tunnel operator protection system based on radio frequency technology according to claim 1, wherein the RFID construction card is composed of a radio frequency tag and a first antenna; the radio frequency tag has a unique identification code; the first The antenna sends radio waves with an identification code to the RFID reader. 3 . The protection system for power cable tunnel operators based on wireless radio frequency technology according to claim 2 , wherein the unique identification code of the radio frequency tag is mapped with the personal information of the operator. 4 . 4. The power cable tunnel operator protection system based on wireless radio frequency technology according to claim 1, wherein the RFID reader is composed of a second antenna, a radio frequency reading and writing module, an RSSI positioning module, a power supply module, a microprocessor The second antenna is connected with the microprocessor and the radio frequency reading and writing module, respectively, sends radio frequency signals to form an electromagnetic field, and receives the radio frequency signals returned by the first antenna; the radio frequency reading and writing module is active reading and writing The RSSI positioning module is interconnected with the microprocessor, and judges the connection between the RFID construction card and the RFID reader according to the signal strength received from the RFID construction card. distance; the power supply module is respectively connected with the microprocessor and the RSSI positioning module; the microprocessor processes the signals sent by the radio frequency reading and writing module and the RSSI positioning module; the first wireless communication module is a SIM card, and the first wireless communication module is connected by The microprocessor sends the reader data information through the wireless communication network. 5. The power cable tunnel operator protection system based on radio frequency technology according to claim 1, is characterized in that: described monitoring center is made up of the second wireless communication module, data processing module, data storage module and monitoring display module; The second wireless communication module is respectively connected with the data processing module and the data storage module for receiving data from the wireless communication network and transmitting to the data processing module and the data storage module; the data processing module is interconnected with the data storage module, and Connected to the monitoring display module, the data processing module processes the received data in combination with the information in the data storage module, and sends the processed data to the monitoring display module for display; the data storage module stores the received data and processed data Carry out unified storage management; the monitoring display module realizes the display of real-time monitoring information, alarm information and application analysis information through the large screen and terminal display screen.