CN206709974U - A kind of temperature-detecting device for power station - Google Patents

Abstract

The utility model provides a temperature detection device for a power station, which solves the technical problems of inaccurate and poor effectiveness of the existing manual inspection temperature measurement, which includes an induction coil, a power supply module, an MCU chip, a wireless temperature sensor, a radio frequency module, RF antenna, RFID reader, RS485 data converter and host computer; the signal output terminal of the wireless temperature sensor is connected to the MCU chip, the RF module is connected to the MCU chip, and the RF antenna is connected to the RF module; the output terminals of the power module are respectively connected to the MCU The chip, wireless temperature sensor, and radio frequency module are connected; the induction coil is connected to the input end of the rectifier unit; the RFID reader is connected to the bus interface, the RS485 data converter is connected to the bus interface through the RS485 bus, and the host computer is connected to the RS485 data converter; The utility model can be widely used in temperature detection of power plants and substations.

Description

A temperature detection device for power station

technical field

The utility model relates to a temperature measuring device, in particular to a temperature detecting device for a power station.

Background technique

In the field of power system technology, temperature is an important parameter for power system equipment. Accurate and real-time detection of the temperature of key points of the equipment will help to detect and eliminate existing faults in time and ensure its safe and reliable operation. For example, during the long-term operation of high-voltage switchgear in power plants and substations, the busbar contacts and high-voltage cable joints in the high-voltage switchgear will heat up due to aging or excessive contact resistance, which will deteriorate the performance of adjacent insulating components and even break down. cause an accident. By detecting the temperature operation of the busbar and switch joints, it can effectively prevent the busbar failure of the switchgear. However, there is exposed high voltage in the switchgear, and the space is closed and narrow, so manual inspection and temperature measurement cannot be carried out. The existing temperature measurement methods cannot effectively solve this problem.

Contents of the invention

The purpose of the utility model is to solve the technical problem of inaccurate and poor effectiveness of the existing manual inspection temperature measurement, and provide a temperature detection device for power stations that can accurately and effectively detect temperature.

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

A temperature detection device for power stations is provided, including an induction coil, a power module, an MCU chip, a wireless temperature sensor, a radio frequency module, a radio frequency antenna, an RFID reader, an RS485 data converter and a host computer; the signal output of the wireless temperature sensor The terminal is connected to the MCU chip, the radio frequency module is connected to the MCU chip, and the radio frequency antenna is connected to the radio frequency module; the output terminal of the power module is respectively connected to the MCU chip, the wireless temperature sensor, and the radio frequency module;

The power module includes a rectification unit, a DC/DC conversion unit, a filter unit, a super capacitor and a discharge unit, the DC/DC conversion unit is connected to the rectification unit, the filter unit is connected to the DC/DC conversion unit, the super capacitor is connected to the filter unit; the discharge unit Including TPS63011 chip, inductor and capacitor, TPS63011 chip has ports VIN, VOUT, FB, SYNC, GND, PGND, VINA, EN, PS, VSEL, L1 and L2; the positive pole of the supercapacitor is connected to the port VIN of the TPS63011 chip, and the negative pole Grounding; the output port VOUT of the TPS63011 chip is grounded through a capacitor; the port FB of the TPS63011 chip is connected to the port VOUT; the ports SYNC, GND and PGND of the TPS63011 chip are connected to ground, and the ports VINA, EN, PS and VSEL are connected to the port VIN, and the port L1 connected to port L2 through the inductor;

The induction coil is connected to the input end of the rectification unit;

The RFID reader is connected with a bus interface, the RS485 data converter is connected with the bus interface through the RS485 bus, and the upper computer is connected with the RS485 data converter.

Preferably, the wireless temperature sensor is an infrared wireless temperature sensor.

Due to the adoption of the above structure, the utility model has the advantages of realizing accurate, real-time and high-efficiency temperature measurement, which is convenient to use and saves energy; the user monitors the temperature operation status of the equipment at the remote end, and if the temperature of the equipment is abnormal, an automatic remote alarm is provided, so as to timely Eliminate accident hazards. The power part has the advantages of short charging time, long service life, stable and reliable power supply, and energy saving.

Description of drawings

Fig. 1 is the structural representation of temperature detecting device;

Fig. 2 is a schematic diagram of the remote transmission signal of the temperature detection device;

Fig. 3 is a functional block diagram of the power module;

Fig. 4 is a schematic diagram of using an induction coil to obtain electricity.

Reference signs: 10. Power module; 20. MCU chip; 30. Wireless temperature sensor; 40. Radio frequency module; 50. Radio frequency antenna; 60. RFID reader; 70. RS485 data converter; 80. Host computer; 90 . Induction coil; 11. Rectification unit, 12. DC/DC conversion unit, 13. Filter unit, 14. Discharge unit; C1 represents a supercapacitor, C2 represents a capacitor, and L represents an inductance.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described.

As shown in Figure 1, the temperature detecting device comprises a power supply module 10, an MCU chip 20, a wireless temperature sensor 30, a radio frequency module 40 and a radio frequency antenna 50, the signal output end of the wireless temperature sensor 30 is connected with the MCU chip 20, and the radio frequency module 40 is connected with the MCU The chip 20 is connected, and the radio frequency antenna 50 is connected to the radio frequency module 40 . The output terminals of the power module 10 are respectively connected with the MCU chip 20 , the wireless temperature sensor 30 and the radio frequency module 40 .

The wireless temperature sensor 30 transmits the measured temperature data to the MCU chip 20, and the MCU chip 20 transmits the temperature data to the radio frequency module 40, and then the temperature data is continuously sent out through the radio frequency module 40 and the radio frequency antenna 50 at a certain time interval.

The wireless temperature sensor 30 is preferably an infrared wireless temperature sensor, and the probe is aimed at other temperature measurement points such as the bus bar of the high-voltage switch cabinet or the switch joint.

As shown in FIG. 2 , the RFID reader-writer 60 is connected with a bus interface, the RS485 data converter 70 is connected with the bus interface on the RFID reader-writer 60 through the RS485 bus, and the upper computer 80 is connected with the RS485 data converter 70 . The RFID reader 60 automatically reads the temperature data emitted by the radio frequency antenna 50 at a long distance, and then outputs a real-time temperature data signal to the upper computer 80 through the RS485 data converter 70 . The upper computer 80 judges whether the temperature of the equipment is normal according to the temperature change, and if it exceeds the set threshold, the upper computer 80 will send an alarm command to the alarm device, and the alarm device will give an alarm. After hearing the alarm sound, the staff will judge in time which part of the line is abnormal, and then take corresponding measures. In this way, the real-time monitoring of the high-voltage switchgear is realized, and rapid maintenance is realized, thereby avoiding the occurrence of accidents.

As shown in Figure 3, the power module 10 includes a rectification unit 11, a DC/DC conversion unit 12, a filter unit 13, a supercapacitor C1 and a discharge unit 14, the DC/DC conversion unit 12 is connected to the rectification unit 11, and the filter unit 13 is connected to the DC The /DC conversion unit 12 is connected, the supercapacitor C1 is connected with the filter unit 13 , and the discharge unit 14 is connected with the supercapacitor C1.

The discharge unit 14 includes a TPS63011 chip of Texas Instruments, an inductor L, and a capacitor C2. The TPS63011 chip has ports VIN, VOUT, FB, SYNC, GND, PGND, VINA, EN, PS, VSEL, L1, and L2. The positive pole of the supercapacitor C1 is connected to the input port VIN of the TPS63011 chip, and the negative pole is grounded. The output port VOUT of the TPS63011 chip is grounded through the capacitor C2; the port FB of the TPS63011 chip is connected to the port VOUT. The ports SYNC, GND and PGND of the TPS63011 chip are connected to ground, the ports VINA, EN, PS and VSEL are connected to the port VIN, and the port L1 is connected to the port L2 through an inductor L.

The rectification unit 11 is used to convert the external alternating current into direct current, and the DC/DC conversion unit 12 converts the direct current voltage output by the rectification unit 11 into a required direct current voltage value (for example, 5V), which is then filtered by the filtering unit 13 and supplied to the supercapacitor C1 Charging, after the supercapacitor C1 is fully charged, the output voltage Vout can be discharged through the discharge unit 14 . The voltage Vout is provided to the MCU chip 20, the wireless temperature sensor 30, the radio frequency module 40, etc. to make them work.

The supercapacitor C1 is used as a backup power supply, so that the power supply module 10 has the advantages of short charging time, long service life, stable and reliable power supply, and energy saving. The circuit of the discharge unit 14 can provide stable and reliable voltage output.

As shown in Figure 4, in order to use conveniently and save energy, the induction coil 90 is installed on the high-voltage busbar or other electric wires of the equipment under test on site, and the high-voltage busbar passes through the induction coil 90, and the terminal of the induction coil 90 is connected to the power supply module 10. The input end of the rectification unit 11 is connected, the induction coil 90 generates an induced current, and the induced current is connected to the rectification unit 11 for rectification to charge the supercapacitor C1.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes.

Claims (2)

1. a kind of temperature-detecting device for power station, it is characterized in that, including it is induction coil, power module, MCU chip, wireless Temperature sensor, radio-frequency module, radio-frequency antenna, RFID reader, RS485 data converters and host computer；

The signal output part of the radio temperature sensor is connected with MCU chip, and radio-frequency module is connected with MCU chip, radio frequency day Line is connected with radio-frequency module；The output end of the power module connects with MCU chip, radio temperature sensor, radio-frequency module respectively Connect；

The power module includes rectification unit, DC/DC converting units, filter unit, ultracapacitor and discharge cell, described DC/DC converting units are connected with rectification unit, and the filter unit is connected with DC/DC converting units, the ultracapacitor with Filter unit connects；The discharge cell includes TPS63011 chips, inductance and electric capacity, and the TPS63011 chips are provided with port VIN, VOUT, FB, SYNC, GND, PGND, VINA, EN, PS, VSEL, L1 and L2；The positive pole of the ultracapacitor with The port VIN connections of TPS63011 chips, negative pole ground connection；The output port VOUT of the TPS63011 chips is connect by electric capacity Ground；The port FB of TPS63011 chips is connected with port VOUT；After port SYNC, GND of TPS63011 chips connect with PGND Ground connection, port VINA, EN, PS and VSEL are connected with port VIN, and port L1 is connected by the inductance with port L2；

The input connection of the induction coil and rectification unit；

The RFID reader is connected with EBI, and the RS485 data converters are connected by RS485 buses and EBI Connect, host computer is connected with RS485 data converters.

2. the temperature-detecting device according to claim 1 for power station, it is characterised in that the radio temperature sensor It is infrared radio temperature sensor.