CN-224217018-U - Novel colliery ventilation safety linkage quick response circuit

CN224217018UCN 224217018 UCN224217018 UCN 224217018UCN-224217018-U

Abstract

The utility model discloses a novel coal mine ventilation safety linkage quick response circuit, and relates to the field of coal mines. The system comprises an ultrasonic wind speed and wind direction sensor, an operational amplifier module, a micro-controller module, a multi-stage alarm module, a direct current motor driving air door module, a micro-controller module and a multi-stage alarm module, wherein the ultrasonic wind speed and wind direction sensor detects the wind speed and wind direction in a mine in real time, generates two paths of measurement signals and sends the two paths of measurement signals to the operational amplifier module to amplify the measurement signals, the ultra-wideband positioning module is used for positioning personnel in the mine, the micro-controller module is used for determining whether the personnel position is abnormal according to positioning data sent by the ultra-wideband positioning module, judging whether the wind speed exceeds an alarm threshold according to the amplified measurement signals, outputting a first control signal to the multi-stage alarm module when the wind speed exceeds the alarm threshold or the personnel position is abnormal, outputting a second control signal to the direct current motor driving air door module, and driving the direct current motor according to the second control signal sent by the micro-controller module to drive the direct current motor to further realize the opening or closing of the air door, and the multi-stage alarm module alarms according to the first control signal sent by the micro-controller module.

Inventors

WANG MIN
Geng Yujin
SHAO LIANGSHAN
WU WENQING
Shang Chuanqiang
ZHANG ZHIXIN
GONG CHEN
DONG HUA
LI WENBIAO
ZHAO ZHENXING
ZHANG HAIPENG

Assignees

山西潞安集团蒲县黑龙煤业有限公司
辽宁理工学院

Dates

Publication Date: 20260508
Application Date: 20250721

Claims (8)

1. The novel coal mine ventilation safety linkage quick response circuit is characterized by comprising a power supply module, an ultrasonic wind speed and wind direction sensor, an operational amplifier module, an ultra-wideband positioning module, a microcontroller module, a direct current motor driving air door module and a multi-stage alarm module; The input end of the power supply module is connected with an external power supply, and after voltage conversion, the output end of the power supply module is connected with the microcontroller module, the operational amplifier module, the ultrasonic wind speed and direction sensor and the ultra-wideband positioning module for power supply; The ultrasonic wind speed and wind direction sensor is used for detecting the wind speed and the wind direction in the mine in real time, generating two paths of measurement signals and sending the two paths of measurement signals to the operational amplifier module; The operational amplifier module is used for amplifying the measurement signals sent by the ultrasonic wind speed and direction sensor and inputting the amplified measurement signals to the microcontroller module; The ultra-wideband positioning module is used for positioning personnel under the mine and transmitting positioning data to the microcontroller module; The microcontroller module is used for determining whether personnel position abnormality exists according to the positioning data sent by the ultra-wideband positioning module, judging whether the wind speed exceeds an alarm threshold according to the amplified measuring signal, outputting a first control signal to the multi-stage alarm module when the wind speed exceeds the alarm threshold or the personnel position abnormality is detected, and outputting a second control signal to the direct current motor driving air door module; The direct current motor drives the air door module and is used for driving the direct current motor according to a second control signal sent by the microcontroller module so as to realize the opening or closing action of the air door; The multi-stage alarm module is used for alarming according to a first control signal sent by the microcontroller module.
2. The novel coal mine ventilation safety linkage quick response circuit according to claim 1, wherein the power module comprises a DC power supply terminal seat, a switch SW2, a low-dropout linear voltage stabilizer HT7833, a first capacitor C10 and a second capacitor C2, wherein a pin 2 and a pin 3 of the DC power supply terminal seat are grounded, one end of the pin 1 is connected to an external power supply of +5V, the other end of the pin 1 is connected to a pin 3 of the switch, the pin 1 of the switch is suspended, the pin 2 is connected with the pin 2 of the low-dropout linear voltage stabilizer and is grounded through the first capacitor C10, the pin 3 outputs +3.3V voltage to supply power for the microcontroller module, the operational amplifier module, the ultrasonic wind speed and wind direction sensor and the ultra-wideband positioning module, and the pin 3 is grounded through the second capacitor C2.
3. The novel coal mine ventilation safety linkage quick response circuit according to claim 1, wherein the ultrasonic wind speed and direction sensor is an WS-30 ultrasonic wind speed and direction sensor, two acquired measurement signals are respectively connected to the operational amplifier module in a differential mode through an A-pin, an A+ pin, a B-pin and a B+ pin, a VCC pin of the ultrasonic wind speed and direction sensor is connected to +3.3V voltage output of the power module, and a GND pin is grounded.
4. The novel coal mine ventilation safety linkage quick response circuit according to claim 1 is characterized in that the operational amplifier module comprises a first operational amplifier U17, a second operational amplifier U18, a first resistor R4 and a second resistor R5, the first operational amplifier U17 and the second operational amplifier U18 are all INA333AIDGKR type operational amplifiers, a pin 2 and a pin 3 of the first operational amplifier U17 are respectively connected with an A-pin and an A+ pin of an ultrasonic wind speed and wind direction sensor, one path of measurement signals is received, a pin 2 and a pin 3 of the second operational amplifier U18 are respectively connected with a B-pin and a B+ pin of the ultrasonic wind speed and wind direction sensor, the other path of measurement signals is received, a first resistor R4 and a second resistor R5 are respectively arranged between a pin 1 and a pin 8 of the first operational amplifier U17 and a pin 8 of the second operational amplifier U18, a pin 7 of the two operational amplifiers are connected with +3.3V voltage output of a power supply module, a pin 4 and a pin 5 are grounded, and the two operational amplifiers U17 and a pin 6 are connected with a microcontroller through the two operational amplifiers to input signals to the microcontroller.
5. The novel coal mine ventilation safety linkage quick response circuit according to claim 1, wherein the ultra-wideband positioning module is of a model DWM1000, a VDD pin of the ultra-wideband positioning module is connected to +3.3v voltage output of the power module, the GND pin is grounded, and a clock pin SCK, a communication pin MOSI and MISO, a chip select terminal CSn, an interrupt pin IRQ and a hardware reset RSTn are all connected to the microcontroller module.
6. The novel coal mine ventilation safety linkage quick response circuit according to claim 1, wherein the microcontroller module is an STM32 microcontroller, the pin 24, the pin 36 and the pin 48 of the microcontroller are connected to +3.3v voltage output of the power module, the pin 23, the pin 35 and the pin 47 are grounded, amplified measurement signals output by the first operational amplifier U17 and the second operational amplifier U18 are respectively input to the pin 10 and the pin 11 of the STM32 microcontroller, the pin 14 to the pin 19 of the STM32 microcontroller are respectively connected to the chip select end CSn, the clock pin SCK, the communication pins MOSI and MISO, the interrupt pin IRQ and the hardware reset RSTn of the ultra wideband positioning module, the pin 27 is directly connected to the multistage alarm module, the pin 28 is connected to one end of the third resistor R3, the other end of the third resistor R3 is connected to the multistage alarm module, and the damper pin 25, the pin 26 and the pin 43 are connected to the direct current motor driving module.
7. The novel coal mine ventilation safety linkage quick response circuit according to claim 1, wherein the direct current motor driving air door module comprises an L298N double full bridge driving chip and a direct current motor JGA25-370, a pin 4 of the L298N double full bridge driving chip is connected with +12V voltage, a pin 9 is connected with +5V voltage, a pin 8 is grounded, a pin 43 of the microcontroller module inputs an enabling signal to a pin 6 of the L298N double full bridge driving chip, a second control signal generated by the microcontroller module is input through a pin 5 and a pin 7 and outputs logic level states to two ends of the direct current motor JGA25-370 through a pin 2 and a pin 3, namely, a pin 3 and a pin 4 of the direct current motor JGA25-370, a pin 2 of the direct current motor JGA25-370 is connected with +5V voltage, and a pin 1 is grounded.
8. The novel coal mine ventilation safety linkage quick response circuit according to claim 1, wherein the multi-stage alarm module comprises an active buzzer and an LED lamp, a pin 1 of the active buzzer is connected with +5V voltage, a pin 3 is grounded, a pin 2 is connected with a third resistor R3 and then is connected with a pin 28 of the microcontroller module, the anode of the LED lamp is connected with a pin 27 of the microcontroller module, and the cathode of the LED lamp is grounded after passing through one resistor.

Description

Novel colliery ventilation safety linkage quick response circuit Technical Field The utility model belongs to the field of coal mines, and particularly relates to a novel coal mine ventilation safety linkage quick response circuit. Background In special working environments such as mines, the wind speed is a core parameter of a ventilation system, underground air quality, disaster prevention and control capability and working conditions are directly determined, and personnel safety positioning is a core technology for realizing accurate management, rapid rescue and risk pre-control. Therefore, wind speed monitoring and personnel safety positioning are important technical means for guaranteeing the safety of underground operation. The traditional wind speed detection mostly adopts a mechanical or common electronic anemometer, has the problems of slow response, difficult maintenance and the like, and is difficult to realize real-time and accurate monitoring. Meanwhile, the underground environment is complex, the trend of personnel is difficult to master, the personnel is easy to enter a dangerous area by mistake or abnormal ventilation accidents occur, the existing underground personnel positioning is various, the existing underground personnel positioning mainly comprises an RFID technology, a Wi-Fi positioning technology, a Bluetooth positioning technology and the like, the anti-interference capability of the technologies is weak, the positioning effect is not obvious in the complex mine environment, and the requirement on the personnel positioning precision in a mine is difficult to meet. Meanwhile, the safety of underground operation is guaranteed, and meanwhile wind speed monitoring and personnel safety positioning are considered, so that a circuit capable of achieving wind speed monitoring and personnel positioning at the same time is needed. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides a novel coal mine ventilation safety linkage quick response circuit which adopts an ultrasonic wind speed sensor to acquire wind speed and direction information in real time, has the advantages of high precision, no mechanical abrasion, quick response and the like, and simultaneously introduces UWB (ultra wide band) positioning technology to realize high-precision real-time positioning of underground personnel so as to ensure the safety of underground operation. A novel coal mine ventilation safety linkage quick response circuit comprises a power supply module, an ultrasonic wind speed and wind direction sensor, an operational amplifier module, an ultra-wideband positioning module, a microcontroller module, a direct current motor driving air door module and a multi-stage alarm module; The input end of the power supply module is connected with an external power supply, and after voltage conversion, the output end of the power supply module is connected with the microcontroller module, the operational amplifier module, the ultrasonic wind speed and direction sensor and the ultra-wideband positioning module for power supply; The ultrasonic wind speed and wind direction sensor is used for detecting the wind speed and the wind direction in the mine in real time, generating two paths of measurement signals and sending the two paths of measurement signals to the operational amplifier module; The operational amplifier module is used for amplifying the measurement signals sent by the ultrasonic wind speed and direction sensor and inputting the amplified measurement signals to the microcontroller module; The ultra-wideband positioning module is used for positioning personnel under the mine and transmitting positioning data to the microcontroller module; The microcontroller module is used for determining whether personnel position abnormality exists according to the positioning data sent by the ultra-wideband positioning module, judging whether the wind speed exceeds an alarm threshold according to the amplified measuring signal, outputting a first control signal to the multi-stage alarm module when the wind speed exceeds the alarm threshold or the personnel position abnormality is detected, and outputting a second control signal to the direct current motor driving air door module; The direct current motor drives the air door module and is used for driving the direct current motor according to a second control signal sent by the microcontroller module so as to realize the opening or closing action of the air door; The multi-stage alarm module is used for alarming according to a first control signal sent by the microcontroller module. Further, the power module comprises a DC power supply terminal seat, a switch SW2, a low-dropout linear voltage regulator HT7833, a first capacitor C10 and a second capacitor C2, wherein a pin 2 and a pin 3 of the DC power supply terminal seat are grounded, one end of a pin 1 is connected to an external power supply of +5V, the other end of the pin is c