CN205300776U - Online temperature monitoring early warning device of non -contact conductor - Google Patents

Abstract

A non-contact conductor online temperature monitoring and early warning device, mainly including a plurality of acquisition and transmission subsystems (3), a receiving and display subsystem (2) and a computer (1), characterized in that: the acquisition and transmission subsystem (3) includes a measurement Temperature module (10), power supply module (11), CPU core module (7), launch module (9), described collection sending subsystem (3) is connected together with thermopile sensor (4), and described thermopile sensor (4) Link to the temperature measurement module (10) inside the collection and transmission subsystem (3), then exchange data in real time through the CPU core module (7), and send information to the receiving display sub-module through the wireless communication transmission module (9) In the system (2), the power supply module (11) provides necessary power for the normal operation of the collection and transmission subsystem (3). The utility model can carry out long-term remote, real-time and online monitoring on the safety status of the switchgear without affecting the structure of the device body.

Description

Non-contact conductor online temperature monitoring and early warning device

technical field

The invention relates to the field of temperature collection, in particular to a non-contact conductor online temperature monitoring and early warning device.

Background technique

During the operation of the power transmission and transformation system, many faults are caused by the abnormal temperature rise of the equipment. During normal operation, the energy generated by the conductive circuit through the working current for a long time is converted into heat, which will increase the temperature of the electrical material, generally within the specified range, but once the conductive circuit is unreliable, the temperature of the electrical material will rise beyond the limit. Therefore, the national standard "GB/T11022-2011 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards" stipulates the allowable long-term working temperature of different electrical materials .

On the other hand, there is a contact resistance at the junction of the two busbars in the power transmission and transformation equipment. When the current passes through, due to the existence of the contact resistance, it will cause heat at this place. If the temperature at this place exceeds the specified value, it will be exacerbated. The contact point is oxidized, and the result of oxidation will lead to an increase in contact resistance, which will increase the calorific value and temperature, and eventually cause equipment failure. Therefore, the national standard and "GB/T11022-2011" stipulate that the rated voltage is 3.6kV and above , Electrical equipment with a frequency of 50Hz for long-term operation, such as circuit breakers, isolating switches, closed combination electrical appliances, metal-enclosed switchgear, load switches and other products that pass the rated operating current for a long time, the temperature of the electrical connection parts does not exceed the value allowed by the standard.

Due to the exposed high voltage in the switchgear, the space is closed and narrow, manual inspection and temperature measurement cannot be performed, and there are many temperature measurement points, which lead to problems such as difficult installation and poor adaptability of the temperature measurement device. Traditional temperature measurement methods cannot effectively solve this problem. The development of digital temperature sensors has made it possible to monitor complex environmental temperatures online. How to transmit the data of multiple temperature measurement points in the high-voltage switchgear in a real-time, reliable and convenient manner is a key technical issue. The emergence of wireless network technology based on IEEE802.15.4 provides a favorable tool for the effective transmission of device data.

Contents of the invention

Aiming at the above difficulties of manual inspection and temperature measurement, as well as the disadvantages of traditional temperature measurement methods, the utility model provides a non-contact conductor online temperature monitoring and early warning device to solve the above technical problems.

The technical scheme that the utility model solves its technical problem adopts is:

A non-contact conductor online temperature monitoring and early warning device, mainly including a plurality of acquisition and transmission subsystems (3), a receiving and display subsystem (2) and a computer (1), characterized in that: the acquisition and transmission subsystem (3) includes a measurement Temperature module (10), power supply module (11), CPU core module (7), emission module (9), described collection sending subsystem (3) is connected together with thermopile sensor (4), and described thermopile sensor (4) Link to the temperature measurement module (10) inside the collection and transmission subsystem (3), then exchange data in real time through the CPU core module (7), and send information to the receiving display sub- In the system (2), the power supply module (11) provides necessary power for the normal operation of the collection and transmission subsystem (3).

Further, the receiving and displaying subsystem (2) includes a CPU core module (7), a receiving module (6), a power supply module (11), a serial port conversion module (12), and a liquid crystal display module (13), and the receiving and displaying subsystem System (2) receives the temperature data of a plurality of collecting and sending subsystems (3) by receiving module (6), and described receiving module (6) is connected together with the CPU core module (7) that has data conversion function, through liquid crystal display The module (13) displays temperature and alarm information on the local terminal, and the temperature and alarm information of the point conductor (5) at each position transmits data to the computer (1) through the serial port conversion module (12).

Further, the receiving and displaying subsystem (2) is connected with the collecting and sending subsystem (3) through wireless communication.

Further, the model of the thermopile sensor (4) is MLX90614, and the thermopile sensor (4) is installed at the front end of the point conductor (5).

Further, the model of the CPU core module (7) is CC2530, and the CPU core module (7) sends data to the receiving display subsystem (2) in a wireless manner through the transmitting module (9) through the ZigBee radio frequency amplifier circuit.

The beneficial effects of the utility model are mainly manifested in: the utility model provides a non-contact conductor online temperature monitoring and early warning device, which can observe the real-time temperature stably for a long time without affecting the structure of the equipment body, without contacting the charged conductor , It can carry out long-term remote, real-time and online monitoring of the safety status of switchgear.

Description of drawings

Fig. 1 is a network topology diagram of the present utility model;

Fig. 2 is a system structure diagram of the utility model;

Fig. 3 is a structural diagram of the collecting and transmitting subsystem of the present utility model;

Fig. 4 is a structural diagram of the receiving and displaying subsystem of the present invention;

Computer 1; receiving and displaying subsystem 2; collecting and sending subsystem 3; thermopile sensor 4; point conductor 5; receiving module 6; CPU core module 7; LCD module 8; transmitting module 9; ; Serial conversion module 12 ; LCD module 13 .

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described below in conjunction with specific embodiments and with reference to the accompanying drawings.

Referring to Figures 1-4, a non-contact conductor online temperature monitoring and early warning device mainly includes a plurality of acquisition and transmission subsystems (3), a receiving and display subsystem (2) and a computer (1), wherein the acquisition and transmission subsystem The front end of (3) is the thermopile sensor (4). The model of the thermopile sensor (4) is MLX90614. The thermopile sensor (4) is installed directly in front of the point conductor (5). The stack sensor (4) has the characteristics of high precision, non-contact, and digital signal output, and can meet the basic conditions for safe operation of the switchgear.

As shown in Fig. 3, the collection and transmission subsystem (3) specifically includes a temperature measurement module (10), a power supply module (11), a CPU core module (7), and a transmission module (9). The temperature measuring module (10) exchanges data with the CPU core module (7) in real time through digital communication, and sends information to the receiving display subsystem (2) through the wireless communication transmitting module (9), and the power supply module (11) is used for collecting The sending subsystem (3) provides the necessary power for normal operation. The infrared temperature sensor samples the temperature signal of the charged conductor in real time, and transmits the temperature signal digitally to the CPU core module (7) through the signal amplification circuit and filtering measures. The model of the CPU core module (7) is CC2530, and the CPU core module ( 7) Send the data wirelessly to the remote through the ZigBee radio frequency amplifier circuit.

As shown in Figure 4, the receiving display subsystem (2) includes a CPU core module (7), a receiving module (6), a power supply module (11), a serial port conversion module (12), and a liquid crystal display module (13). The receiving and displaying subsystem (2) uses the radio frequency transceiver circuit to receive the temperature data of multiple acquisition and sending subsystems (3), after data conversion, the temperature and alarm information can be displayed on the local terminal, and the dotted conductors at each position are connected through the network (5) The temperature and alarm information are uploaded to the computer (1), thereby forming a distributed non-contact conductor online temperature monitoring and early warning device.

The receiving and displaying subsystem (2) receives and collects the data of the sending subsystem (3) through the wireless communication protocol, uses the CPU core module (7) to analyze and process the data and converts it into a temperature value, and displays it on the liquid crystal display module (13), The serial port conversion module (12) is used to transmit the data to the computer (1).

Although the above exemplified some specific embodiments to illustrate and describe the present invention, it does not mean that the present invention is limited to various details thereof, and at the same time, the software-related parts involved in the utility model are all Public software, each module described is a hardware module. On the contrary, various modifications may be made in various details within the scope and range equivalent to the claims without departing from the spirit of the invention.

Claims (5)

1. A non-contact conductor online temperature monitoring and early warning device, mainly including a plurality of acquisition and transmission subsystems (3), a receiving and display subsystem (2) and a computer (1), characterized in that: the acquisition and transmission subsystem (3) Including a temperature measurement module (10), a power supply module (11), a CPU core module (7), and a launch module (9), the collection and transmission subsystem (3) is connected with a thermopile sensor (4), and the thermopile The stack sensor (4) is connected to the temperature measurement module (10) inside the collection and transmission subsystem (3), and then exchanges data in real time through the CPU core module (7), and sends information to the receiver through the wireless communication transmission module (9). The display subsystem (2), the power supply module (11) provides necessary power for the normal operation of the acquisition and transmission subsystem (3). 2. The non-contact conductor online temperature monitoring and early warning device according to claim 1, characterized in that, the receiving display subsystem (2) includes a CPU core module (7), a receiving module (6), a power supply module (11 ), serial port conversion module (12), liquid crystal display module (13), described receiving and displaying subsystem (2) receives the temperature data of a plurality of acquisition sending subsystems (3) by receiving module (6), described receiving module ( 6) Connect together with the CPU core module (7) with data conversion function, display temperature and alarm information at the local terminal through the liquid crystal display module (13), and the thermopile sensor (4) is installed on the strip conductor (5) The temperature and alarm information of the point conductor (5) is transmitted to the computer (1) through the serial port conversion module (12). 3. The non-contact conductor online temperature monitoring and early warning device according to claim 2, characterized in that the receiving and displaying subsystem (2) is connected to the collecting and sending subsystem (3) through wireless communication. 4. The non-contact conductor online temperature monitoring and early warning device according to claim 3, characterized in that the model of the thermopile sensor (4) is MLX90614. 5. non-contact conductor online temperature monitoring and early warning device according to claim 4, is characterized in that, the model of described CPU core module (7) is CC2530, and described CPU core module (7) is by ZigBee radio frequency amplifying circuit The data is sent to the receiving and displaying subsystem (2) in a wireless manner through the transmitting module (9).