CN214621510U - Temperature measuring circuit for high-low voltage cabinet - Google Patents

Abstract

The utility model discloses a temperature measuring circuit for high and low voltage cabinets, which comprises a singlechip of STM32L152C8T6, a wireless module of RA-01 and a temperature detection module, the single chip microcomputer is connected with the wireless module and the temperature detection module, the first pin of the singlechip is connected with a capacitor C3, the fifth pin of the singlechip is connected with a capacitor C1 and a crystal oscillator X1 in parallel, the sixth pin of the single chip microcomputer is connected with a capacitor C2 and a crystal oscillator X1, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel and are grounded, a twenty-third pin of the single chip microcomputer is connected with a resistor R1 and a resistor R2 in parallel, a twenty-fifth pin of the single chip microcomputer is connected with a fourth pin of the wireless module, and a twenty-sixth pin of the single chip microcomputer is connected with a twelfth pin of the wireless module, and a twenty-eighth pin of the single chip microcomputer is connected with a fourteenth pin of the wireless module.

Description

Temperature measuring circuit for high-low voltage cabinet

Technical Field

The utility model relates to a high-low voltage cabinet temperature measurement field especially relates to a temperature measurement circuit for high-low voltage cabinet.

Background

Currently operating electrical equipment is usually operated in a high voltage state and a high current state, and certain defects present in the electrical equipment may cause abnormal temperature increases of equipment components. Resulting in vicious cycle of temperature and contact resistance, which may eventually lead to abnormal operation of the equipment, even burning out, and too high temperature may cause burning, explosion, even equipment damage or quality accident. Therefore, a temperature measuring circuit for a high-low voltage cabinet is needed, when the temperature of an electric line exceeds a set alarm threshold value, the current alarm type, address and the like are displayed, an early warning effect is achieved, and early electric fire is prevented.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a temperature measurement circuit for high-low voltage cabinet eliminates because of overcurrent, voltage are too high or cross the electric fire hidden danger that arouses excessively.

The technical scheme of the utility model is that:

the utility model provides a temperature measurement circuit for high-low voltage cabinet, includes that the model is STM32L152C8T 6's singlechip, wireless module and the temperature detection module that the model is RA-01, the singlechip with wireless module connects, the singlechip with the temperature detection module is connected, the first pin of singlechip is connected with electric capacity C3, the fifth pin of singlechip has electric capacity C1 and crystal oscillator X1 in parallel, the sixth pin of singlechip is connected with electric capacity C2 and crystal oscillator X1, electric capacity C1, electric capacity C2 and electric capacity C3 are parallelly connected and ground connection, the twenty-third pin of singlechip is parallelly connected with resistance R1 and resistance R2, the twenty-fifth pin of singlechip is connected the fourth pin of wireless module, the twenty-sixth pin of singlechip is connected the twelfth pin of wireless module, the twenty-eighth pin of singlechip is connected the fourteenth pin of wireless module, and a twenty-ninth pin of the single chip microcomputer is connected with a fifth pin of the wireless module, and a thirty-second pin of the single chip microcomputer is connected with a fifteenth pin of the wireless module.

The working principle of the technical scheme is as follows:

in this technical scheme, the built-in A/D circuit of STM32L152C8T6 singlechip, temperature detection circuitry comprises digital temperature and humidity sensor, R1, R2, C4, C5 etc. and digital temperature and humidity sensor surface contact is on the cable surface, gathers the temperature. When the temperature variation, digit temperature and humidity sensor 2 nd foot is imported 23 th foot to STM32L152C8T6 singlechip through R2, after the inside judgement of STM32L152C8T6 singlechip, by STM32L152C8T6 singlechip 28 th, 29, 30, 31 end output data signal control ann letter RA-01 wireless module wireless LORA emission module, send a signal to LORA receiving host computer module after ann letter RA-01 wireless module is inside to be analyzed, the LORA host computer shows current temperature value, when exceeding the temperature alarm value, show address and temperature value, reach the early warning effect, prevent early electric fire, the utility model relates to a control program, technical staff in the art all can realize according to the same principle of current program, this part is not the utility model discloses an innovation point place.

In a further technical scheme, the wireless module is in a Anxin type RA-01, a first pin of the wireless module is connected with a radio frequency coaxial connector COAX-F, a second pin of the wireless module is grounded, a third pin of the wireless module is connected with a capacitor C6 and a capacitor C7 in parallel, a fourth pin of the wireless module is connected with a twenty-fifth pin of the single chip microcomputer, a fifth pin of the wireless module is connected with a twenty-ninth pin of the single chip microcomputer, a ninth pin and a sixteenth pin of the wireless module are connected with ground in parallel, a twelfth pin of the wireless module is connected with a twenty-sixth pin of the single chip microcomputer, a thirteenth pin of the wireless module is connected with a twenty-seventh pin of the single chip microcomputer, a fourteenth pin of the wireless module is connected with a twenty-eighth pin of the single chip microcomputer, a second interface of the wireless module is grounded, the third interface of the wireless module is connected with the capacitor C7 and the capacitor C8 in parallel and is connected with the radio frequency coaxial connector COAX-F, and the ninth interface and the sixteenth interface of the wireless module are connected with the radio frequency coaxial connector COAX-F.

In this technical scheme, but ann believes RA-01 wireless module can furthest reduce current consumption, but ann believes RA-01 wireless module and STM32L152C8T6 singlechip are connected, under the prerequisite of anti-jamming and low-power consumption, the data signal of STM32L152C8T6 singlechip output sends the signal to LORA receiving host computer module after believing RA-01 wireless module is inside to be analyzed, the LORA host computer shows current temperature value, when exceeding the setting temperature alarm value, show address and temperature value, reach the early warning effect, prevent early electric fire.

In a further technical scheme, the temperature detection module includes a digital temperature and humidity sensor with a model of AM2302, a first pin and a third pin of the sensor are connected with a twenty-second pin of the single chip microcomputer through a resistor 1R5 and a resistor 1R6, the first pin and the second pin of the sensor are connected through resistors 1R5 and 1R6, a capacitor 1C3 and a capacitor 1C4 are connected between the resistor 1R5 and the resistor 1R6, an output end of the capacitor 1C3 is grounded, an output end of the capacitor 1C3 is connected with an input end of the capacitor 1C4, an output end of the capacitor 1C4 is connected with the resistor 1R6, and a fourth pin of the sensor is grounded.

In the technical scheme, the AM2302 digital temperature and humidity sensor outputs calibrated digital signals, the AM2302 digital temperature and humidity sensor is connected to a high-performance STM32L152C8T6 single chip microcomputer, the high reliability and the excellent long-term stability are achieved, meanwhile, the power consumption is low, the signal transmission distance is long, a host used in a temperature measuring circuit of a high-low voltage cabinet in the application sends a start signal once, after the STM32L152C8T6 single chip microcomputer receives the start signal, the AM2302 digital temperature and humidity sensor is switched from a low power consumption mode to a high-speed mode, after the host start signal is ended, signal end information is sent to the STM32L152C8T6 single chip microcomputer, the AM2302 digital temperature and humidity sensor sends response signals and sends data, signal acquisition is triggered at the moment, and if the time interval between two times of measurement is long in the process of using the AM2302 digital temperature and humidity sensor, the real-time temperature and humidity values need to be obtained continuously twice.

The utility model has the advantages that:

1. the hidden danger of electrical fire caused by over-current, over-high voltage or over-low voltage is eliminated;

2. when the parameters of the monitoring device in the protected line exceed the alarm set value, alarm and control signals can be generated;

3. the wireless temperature measurement system comprises wireless temperature acquisition, singlechip control circuit, warning circuit, LORA module wireless transmission circuit etc. fixes wireless temperature sensor installation on the cable surface, and when electric line temperature exceeded and set up the alarm threshold value, the singlechip transmitted to the gateway host computer through LORA and shows current warning type and address etc. reaches the early warning effect, prevents early electric fire.

Drawings

Fig. 1 is a circuit diagram of a temperature measuring circuit for a high-low voltage cabinet according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

Example (b):

as shown in fig. 1, the temperature detection device comprises a single chip microcomputer with a model number of STM32L152C8T6, a wireless module with a model number of RA-01 and a temperature detection module, wherein the single chip microcomputer is connected with the wireless module, the single chip microcomputer is connected with the temperature detection module, a first pin of the single chip microcomputer is connected with a capacitor C3, a fifth pin of the single chip microcomputer is connected with a capacitor C1 and a crystal oscillator X1 in parallel, a sixth pin of the single chip microcomputer is connected with a capacitor C2 and a crystal oscillator X1, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel and grounded, a twenty-third pin of the single chip microcomputer is connected with a resistor R1 and a resistor R2 in parallel, a twenty-fifth pin of the single chip microcomputer is connected with a fourth pin of the wireless module, a twenty-sixth pin of the single chip microcomputer is connected with a twelfth pin of the wireless module, a twenty-eighth pin of the single chip microcomputer is connected with a fourteenth pin of the wireless module, a twenty-ninth pin of the single chip microcomputer is connected with a fifth pin of the wireless module, and a thirty-second pin of the singlechip is connected with a fifteenth pin of the wireless module.

The working principle of the above embodiment is as follows:

in this embodiment, the STM32L152C8T6 singlechip embeds the AD circuit, and temperature-detecting circuit comprises digital temperature and humidity sensor, R1, R2, C4, C5 etc. and digital temperature and humidity sensor surface contact is on the cable surface, gathers the temperature. When the temperature variation, digit temperature and humidity sensor 2 nd foot is imported 23 th foot to STM32L152C8T6 singlechip through R2, after the inside judgement of STM32L152C8T6 singlechip, by STM32L152C8T6 singlechip 28 th, 29, 30, 31 end output data signal control ann letter RA-01 wireless module wireless LORA emission module, send a signal to LORA receiving host computer module after ann letter RA-01 wireless module is inside to be analyzed, the LORA host computer shows current temperature value, when exceeding the temperature alarm value, show address and temperature value, reach the early warning effect, prevent early electric fire, the utility model relates to a control program, technical staff in the art all can realize according to the same principle of current program, this part is not the utility model discloses an innovation point place.

In another embodiment, as shown in fig. 1, the wireless module is in a model of Anxin RA-01, a first pin of the wireless module is connected with a radio frequency coaxial connector COAX-F, a second pin of the wireless module is grounded, a third pin of the wireless module is connected with a capacitor C6 and a capacitor C7 in parallel, a fourth pin of the wireless module is connected with a twenty-fifth pin of the single chip microcomputer, a fifth pin of the wireless module is connected with a twenty-ninth pin of the single chip microcomputer, a ninth pin and a sixteenth pin of the wireless module are connected with ground in parallel, a twelfth pin of the wireless module is connected with a twenty-sixth pin of the single chip microcomputer, a thirteenth pin of the wireless module is connected with a twenty-seventh pin of the single chip microcomputer, a fourteenth pin of the wireless module is connected with a twenty-eighth pin of the single chip microcomputer, the second interface of the wireless module is grounded, the third interface of the wireless module is connected in parallel with a capacitor C7 and a capacitor C8 and is connected with the radio frequency coaxial connector COAX-F, and the ninth interface and the sixteenth interface of the wireless module are connected with the radio frequency coaxial connector COAX-F.

In this embodiment, believe can RA-01 wireless module safely can furthest reduce current consumption, believe can RA-01 wireless module safely is connected with STM32L152C8T6 singlechip, under the prerequisite of anti-jamming and low-power consumption, the data signal of STM32L152C8T6 singlechip output sends the signal to LORA receiving host computer module after believing can RA-01 wireless module is inside to be analyzed, the LORA host computer shows current temperature value, when exceeding the setting temperature alarm value, show address and temperature value, reach the early warning effect, prevent early electric fire.

In another embodiment, the temperature detection module includes a digital temperature and humidity sensor with a model of AM2302, a first pin and a third pin of the sensor are connected with a twenty-second pin of the single chip microcomputer through a resistor 1R5 and a resistor 1R6, the first pin and the second pin of the sensor are connected through resistors 1R5 and 1R6, a capacitor 1C3 and a capacitor 1C4 are connected between the resistor 1R5 and the resistor 1R6, an output end of the capacitor 1C3 is grounded, an output end of the capacitor 1C3 is connected with an input end of the capacitor 1C4, an output end of the capacitor 1C4 is connected with the resistor 1R6, and a fourth pin of the sensor is grounded.

In this embodiment, the AM2302 digital temperature and humidity sensor outputs calibrated digital signals, the AM2302 digital temperature and humidity sensor is connected to a high-performance STM32L152C8T6 single chip microcomputer, and has extremely high reliability and excellent long-term stability, and simultaneously, the power consumption is very low, and the signal transmission distance is long.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (3)

1. The temperature measuring circuit for the high-low voltage cabinet is characterized by comprising a single chip microcomputer of which the model is STM32L152C8T6, a wireless module of which the model is RA-01 and a temperature detection module, wherein the single chip microcomputer is connected with the wireless module, the single chip microcomputer is connected with the temperature detection module, a first pin of the single chip microcomputer is connected with a capacitor C3, a fifth pin of the single chip microcomputer is connected with a capacitor C1 and a crystal oscillator X1 in parallel, a sixth pin of the single chip microcomputer is connected with a capacitor C2 and a crystal oscillator X1, the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel and grounded, a twenty-third pin of the single chip microcomputer is connected with a resistor R1 and a resistor R2 in parallel, a twenty-fifth pin of the single chip microcomputer is connected with a fourth pin of the wireless module, a twenty-sixth pin of the single chip microcomputer is connected with a twelfth pin of the wireless module, and a twenty-eighth pin of the single chip microcomputer is connected with a fourteenth pin of the wireless module, and a twenty-ninth pin of the single chip microcomputer is connected with a fifth pin of the wireless module, and a thirty-second pin of the single chip microcomputer is connected with a fifteenth pin of the wireless module.

2. The temperature measuring circuit for the high-low voltage cabinet according to claim 1, wherein the wireless module is of type Anxin RA-01, the first pin of the wireless module is connected with a radio frequency coaxial connector COAX-F, the second pin of the wireless module is grounded, the third pin of the wireless module is connected with a capacitor C6 and a capacitor C7 in parallel, the fourth pin of the wireless module is connected with a twenty-fifth pin of the single chip microcomputer, the fifth pin of the wireless module is connected with a twenty-ninth pin of the single chip microcomputer, the ninth pin and the sixteenth pin of the wireless module are connected with ground in parallel, the twelfth pin of the wireless module is connected with a twenty-sixth pin of the single chip microcomputer, the thirteenth pin of the wireless module is connected with a twenty-seventh pin of the single chip microcomputer, and the fourteenth pin of the wireless module is connected with a twenty-eighth pin of the single chip microcomputer, the second interface of the wireless module is grounded, the third interface of the wireless module is connected in parallel with a capacitor C7 and a capacitor C8 and is connected with the radio frequency coaxial connector COAX-F, and the ninth interface and the sixteenth interface of the wireless module are connected with the radio frequency coaxial connector COAX-F.

3. The temperature measurement circuit for the high-low voltage cabinet according to claim 1, wherein the temperature detection module comprises a digital temperature and humidity sensor of type AM2302, a first pin and a third pin of the sensor are connected with a twenty-second pin of the single chip microcomputer through a resistor 1R5 and a resistor 1R6, the first pin and the second pin of the sensor are connected through resistors 1R5 and 1R6, a capacitor 1C3 and a capacitor 1C4 are connected between the resistor 1R5 and the resistor 1R6, an output end of the capacitor 1C3 is grounded, an output end of the capacitor 1C3 is connected with an input end of the capacitor 1C4, an output end of the capacitor 1C4 is connected with the resistor 1R6, and a fourth pin of the sensor is grounded.

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