Fluorine leakage detector

Abstract

The utility model discloses a fluorine leakage detector which comprises an MCU (Microprogrammed Control Unit) main control chip module, and the chip model of the MCU main control chip module is SC92F7413X28U; the MCU main control chip module is connected with the nixie tube module; the MCU main control chip module is connected with the UV ultraviolet lamp module; the MCU main control chip module is connected with a power supply module, and a charging management chip U1 is arranged in the power supply module; the MCU main control chip module is connected with the lighting module; the MCU main control chip module is connected with the voltage output enabling module, a DC-DC voltage reduction conversion chip is arranged in the voltage output enabling module, and the voltage output enabling module is connected with the key module; the MCU main control chip module is connected with a sensor module, and an operational amplifier U5 is arranged in the sensor module; the MCU main control chip module is connected with the battery voltage detection module; and the MCU main control chip module is connected with the key module, the passive buzzer driving module and the fan control module.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold storage refrigeration monitoring technical field, concretely is a fluorine leakage detector. BACKGROUND

[0002] The refrigerant of cold storage inevitably appears the phenomenon of refrigerant leakage after long time use, therefore needs to use the special detection equipment to detect which position leakage occurs when overhauling to carry out maintenance.

[0003] Such as traditional detection technology, utilize soap water to leak. The soap water is applied to the pipeline, the door valve, the weld and so on easy leak position, observes whether produces the bubble, but relies on manual, is difficult to detect small leak, and is not suitable for concealed position. In modern electronic detection technology, utilize infrared spectrum absorption characteristic detection refrigerant gas and capture gas leak and produce high frequency ultrasonic wave signal detection whether fluorine leakage is two most common means, but the cost of these two kinds of equipment is higher, and environmental noise can interfere with the detection, causes the inaccurate detection result.

[0004] Therefore, a fluorine leakage detector is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a fluorine leakage detector to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A fluorine leakage detector, comprising an MCU main control chip module, the chip model of the MCU main control chip module is SC92F7413X28U;

[0008] The MCU main control chip module is connected with a digital tube module;

[0009] The MCU main control chip module is connected with a UV ultraviolet light module;

[0010] The MCU main control chip module is connected with a power supply module, and the power supply module is internally provided with a charging management chip U1;

[0011] The MCU main control chip module is connected with an illumination module;

[0012] The MCU main control chip module is connected with a voltage output enabling module, the voltage output enabling module is internally provided with a DC-DC step-down conversion chip, and the voltage output enabling module is connected with a key module;

[0013] The MCU main control chip module is connected with a sensor module, and the sensor module is internally provided with an operational amplifier U5;

[0014] The MCU master chip module is connected with a battery voltage detection module;

[0015] The MCU master chip module is connected with a key module, a passive buzzer driving module and a fan control module.

[0016] Further, the model of the nixie tube module is FJ8106BH;

[0017] The 28th pin of the MCU master chip module is connected with the 7th pin of the nixie tube module through the resistor R25, the 27th pin of the MCU master chip module is connected with the 6th pin of the nixie tube module through the resistor R26, the 26th pin of the MCU master chip module is connected with the 4th pin of the nixie tube module through the resistor R27, the 25th pin of the MCU master chip module is connected with the 2nd pin of the nixie tube module through the resistor R28, the 24th pin of the MCU master chip module is connected with the 1st pin of the nixie tube module through the resistor R29, the 23rd pin of the MCU master chip module is connected with the 9th pin of the nixie tube module through the resistor R30, and the 22nd pin of the MCU master chip module is connected with the 10th pin of the nixie tube module through the resistor R31.

[0018] Further, the 21st pin of the MCU master chip module is connected with the LED-UV of the UV light module, the LED-UV is connected with the resistor R52, the resistor R52 is connected with the resistor R53, the resistor R52 and the resistor R53 are connected with the MOS tube Q11, the MOS tube Q11 is connected with the LED9 through the resistor R50 and connected with the LED10 through the resistor R51.

[0019] Further, the model of the charging management chip U1 is IP5310;

[0020] The charging management chip U1 is connected with the TYPE-C power input CN2 through the resistor R1, the resistor R2, the resistor R4, the capacitor C3 and the capacitor C5, and connected with the battery through the resistor R3, the capacitor C1 and the capacitor C2, and the 2nd pin of the MCU master chip module is connected with the charging management chip U1.

[0021] Further, the 20th pin of the MCU master chip module is connected with the LED of the lighting module, the LED is connected with the resistor R44, the resistor R44 is connected with the resistor R47, the resistor R44 and the resistor R47 are connected with the MOS tube Q9, the MOS tube Q9 is connected with the LED6 through the resistor R41, connected with the LED7 through the resistor R42 and connected with the LED8 through the resistor R43.

[0022] Further, the voltage output enabling module includes 3.3V enabling and 0.9V enabling;

[0023] The 3.3V enablement is provided with a DC-DC step-down conversion chip U2, and the 0.9V enablement is provided with a DC-DC step-down conversion chip U3, both of which are TLV62569DBVR;

[0024] The 4-pin of the MCU master control chip module is connected with the OFF / ON-POWER-3V3 of the 3.3V enablement, the 5-pin of the MCU master control chip module is connected with the EY-DETECT of the 3.3V enablement, the EY-DETECT is connected with the KEY1 of the 3.3V enablement, the KEY1 is connected with the key module, the DC-DC step-down conversion chip U2 is connected with the resistor R15 and the light emitting diode LED5 after being filtered by the capacitor C12, the capacitor C13, the capacitor C14 and the capacitor C15.

[0025] The 9-pin of the MCU master control chip module is connected with the OFF / ON-POWER-0V9 of the 0.9V enablement, and the DC-DC step-down conversion chip U3 is connected with the capacitor C18, the capacitor C19, the capacitor C20 and the capacitor C21 after being filtered.

[0026] Further, the sensor module is PH-4AWT;

[0027] The 15-pin of the MCU master control chip module is connected with the 1-pin of the sensor module through the resistor R46.

[0028] The 1-pin of the operational amplifier U5 is connected with the 2-pin of the sensor module, the 4-pin of the operational amplifier U5 is connected with the switch diode D4 and the capacitor C29, and is connected with the 17-pin of the MCU master control chip module through the ADC-SENSOR.

[0029] Further, the 19-pin of the MCU master control chip module is connected with the ON / OFF-DET-VBAT of the battery voltage detection module.

[0030] The ON / OFF-DET-VBAT is connected with the resistor R38, the resistor R38 is connected with the resistor R39, the resistor R38 and the resistor R39 are connected with the MOS tube Q8, the MOS tube Q8 is connected with the MOS tube Q6, the MOS tube Q6 is connected with the ADC-VBAT after being divided and filtered by the resistor R35, the resistor R36, the resistor R40 and the resistor R38, and the ADC-VBAT is connected with the 18-pin of the MCU master control chip module.

[0031] Further, the key module is provided with the switch S1, the mute switch S2, the sensitivity adjustment S3 and the lighting switch S4.

[0032] The KEY1 connects the on-off S1 of the button module, the button module is provided with the capacitor C25, the capacitor C26 and the capacitor C27, and the three are connected with the 10th pin, the 11th pin and the 12th pin of the MCU main control chip module respectively.

[0033] Further, the 13th pin of the MCU main control chip module is connected with the PWM-BEEP of the passive buzzer driving module, the PWM-BEEP is connected with the resistor R48, the resistor R48 is connected with the resistor R49, and the resistor R48 and the resistor R49 are connected with the MOS tube Q10.

[0034] The 14th pin of the MCU main control chip module is connected with the PWM-FAN of the fan control module, the PWM-FAN is connected with the resistor R34, the resistor R34 is connected with the resistor R37, the resistor R34 and the resistor R37 are connected with the MOS tube Q7, the MOS tube Q7 is connected with the 2nd pin of the socket CN5, and the socket CN5 is connected with the fan.

[0035] Compared with the prior art, the utility model has the advantages that:

[0036] It has high sensitivity to HCFS (such as freon R134a) and improves the ability to resist other gas interference. The product is suitable for leakage detection of refrigerant gases R134a, R-410a and R-407c. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is the schematic diagram of the utility model;

[0038] Figure 2 It is the schematic diagram of the digital tube module of the utility model;

[0039] Figure 3 It is the schematic diagram of the UV ultraviolet lamp module of the utility model;

[0040] Figure 4 It is the schematic diagram of the power supply module of the utility model;

[0041] Figure 5 It is the schematic diagram of the lighting module of the utility model;

[0042] Figure 6 It is the schematic diagram of the voltage output enabling module of the utility model;

[0043] Figure 7 It is the schematic diagram of the sensor module of the utility model;

[0044] Figure 8 It is the schematic diagram of the battery voltage monitoring module of the utility model;

[0045] Figure 9 It is the schematic diagram of the button module of the utility model;

[0046] Figure 10 The passive buzzer driving module principle diagram of the utility model;

[0047] Figure 11 The fan control module principle diagram of the utility model. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model.

[0049] Embodiment 1

[0050] Please refer to Figures 1-11 The utility model provides a technical scheme:

[0051] A fluorine leakage detector, comprising an MCU main control chip module, the chip model number of the MCU main control chip module is SC92F7413X28U;

[0052] The model number of the nixie tube module is FJ8106BH, the 28 pin of the MCU main control chip module is connected with the 7 pin of the nixie tube module through the resistance R25, the 27 pin of the MCU main control chip module is connected with the 6 pin of the nixie tube module through the resistance R26, the 26 pin of the MCU main control chip module is connected with the 4 pin of the nixie tube module through the resistance R27, the 25 pin of the MCU main control chip module is connected with the 2 pin of the nixie tube module through the resistance R28, the 24 pin of the MCU main control chip module is connected with the 1 pin of the nixie tube module through the resistance R29, the 23 pin of the MCU main control chip module is connected with the 9 pin of the nixie tube module through the resistance R30, and the 22 pin of the MCU main control chip module is connected with the 10 pin of the nixie tube module through the resistance R31.

[0053] The 21 pin of the MCU main control chip module is connected with the LED-UV of the UV ultraviolet lamp module, the LED-UV is connected with the resistance R52, the resistance R52 is connected with the resistance R53, the resistance R52 and the resistance R53 are connected with the MOS tube Q11, the MOS tube Q11 is connected with the LED9 through the resistance R50 and connected with the LED10 through the resistance R51.

[0054] The model number of the charging management chip U1 is IP5310, the charging management chip U1 is connected with the TYPE-C power input CN2 through the resistance R1, the resistance R2, the resistance R4, the capacitor C3 and the capacitor C5, the charging management chip U1 is connected with the battery through the resistance R3, the capacitor C1 and the capacitor C2, and the 2 pin of the MCU main control chip module is connected with the charging management chip U1.

[0055] The 20-pin connection of the MCU master chip module connects the LED of the lighting module, the LED connects the resistor R44, the resistor R44 connects the resistor R47, the resistor R44 and the resistor R47 connect the MOS tube Q9, the MOS tube Q9 connects the LED 6 through the resistor R41, connects the LED 7 through the resistor R42, and connects the LED 8 through the resistor R43.

[0056] The voltage output enabling module includes 3.3V enabling and 0.9V enabling, the 3.3V enabling is provided with a DC-DC step-down conversion chip U2, the 0.9V enabling is provided with a DC-DC step-down conversion chip U3, both of which are TLV62569DBVR, the 4-pin connection of the MCU master chip module connects the OFF / ON-POWER-3V3 of the 3.3V enabling, the 5-pin connection of the MCU master chip module connects the EY-DETECT of the 3.3V enabling, the EY-DETECT connects the KEY1 of the 3.3V enabling, the KEY1 connects the key module, the DC-DC step-down conversion chip U2 is filtered by the capacitor C12, the capacitor C13, the capacitor C14 and the capacitor C15, and then outputs 3.3V and is connected with the resistor R15 and the light-emitting diode LED5, the 9-pin connection of the MCU master chip module connects the OFF / ON-POWER-0V9 of the 0.9V enabling, and the DC-DC step-down conversion chip U3 is filtered by the capacitor C18, the capacitor C19, the capacitor C20 and the capacitor C21, and then outputs 0.9V;

[0057] The sensor module is PH-4AWT, the 15-pin connection of the MCU master chip module connects the 1-pin of the sensor module through the resistor R46, the 1-pin of the operational amplifier U5 connects the 2-pin of the sensor module, the 4-pin of the operational amplifier U5 connects the switching diode D4 and the capacitor C29, and is connected with the 17-pin of the MCU master chip module through the ADC-SENSOR;

[0058] The 19-pin connection of the MCU master chip module connects the ON / OFF-DET-VBAT of the battery voltage detection module, the ON / OFF-DET-VBAT connects the resistor R38, the resistor R38 connects the resistor R39, the resistor R38 and the resistor R39 connect the MOS tube Q8, the MOS tube Q8 connects the MOS tube Q6, the MOS tube Q6 is connected with the ADC-VBAT after being filtered by the resistor R35, the resistor R36, the resistor R40 and the resistor R38, and the ADC-VBAT connects the 18-pin of the MCU master chip module;

[0059] The key module is provided with the switch S1, the mute switch S2, the sensitivity adjustment S3 and the lighting switch S4, the EY1 connects the switch S1 of the key module, the key module is provided with the capacitor C25, the capacitor C26 and the capacitor C27, and the three are respectively connected with the 10-pin, the 11-pin and the 12-pin of the MCU master chip module.

[0060] Connect the 13-pin of MCU master chip module to the PWM-BEEP of passive buzzer drive module, connect the PWM-BEEP to the resistor R48, connect the resistor R48 to the resistor R49, connect the resistor R48 and the resistor R49 to the MOS tube Q10.

[0061] Connect the 14-pin of MCU master chip module to the PWM-FAN of fan control module, connect the PWM-FAN to the resistor R34, connect the resistor R34 to the resistor R37, connect the resistor R34 and the resistor R37 to the MOS tube Q7, connect the MOS tube Q7 to the 2-pin of the socket CN5, and connect the socket CN5 to the fan.

[0062] Principle of use:

[0063] In the MCU master chip module, the MUC uses SC92F7413X28U of Sanyuan, which is an 8-bit microcontroller core based on 8051 architecture, used for detection control, power supply and key control, two integrated measurement units (analog-to-digital converters) for monitoring refrigerant mixture and battery voltage, three pulse width modulation for driving buzzer, fan and sensor probe board working indicator light.

[0064] In the digital tube module (such as Figure 2 ), the digital tube is connected with the MCU single-chip microcomputer through the voltage dividing current limiting resistors such as resistors R25, R26, R27, R28, R29, R30 and R31, so that the MCU can directly drive the digital tube, and the sensitivity adjustment and display of the detector can be realized by combining the keys.

[0065] In the UV violet light module (such as Figure 3 ), the LED-UV is connected to the 21-pin of the MCU, and the two LED ultraviolet lamps of LED9 and LED10 are lit by controlling the MOS tube Q11 through the key S4 and the MCU.

[0066] In the power supply module (such as Figure 4), the power strip CN2 is TYPE-C power input, and then enters the charging management chip U1 after being reduced and filtered by the resistor R1, the resistor R2, the resistor R4, the capacitor C3 and the resistor C5. Since 5V voltage is required in the circuit, and the charging management chip U1 is built-in with a boost circuit, the circuit can be simplified and the power consumption can be reduced. When the current is filtered and output as 5V after being filtered by the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 in parallel, LX is a DCDC switch node, connected with the power inductor L1 for boost / voltage reduction, connected with the BAT battery core power supply pin, filtered by the resistor R3, the capacitor C1 and the capacitor C2, connected with the battery after filtering out interference, and the battery can be powered and charged. The LED1, the LED2, the LED3 and the LED4 are light-emitting diodes, used for displaying real-time power, and the OFF-POWER is connected with the 2th pin of the MCU, and the MOSQ1 can be controlled to control the 5V voltage switch, so as to realize the switch control of the 5V voltage and reduce the power consumption.

[0067] In the lighting module (such as Figure 5 ), the LED is connected with the 20th pin of the MCU, and the three LED inspection lamps of the LED6, the LED7 and the LED8 are realized by pressing the key S4 and the MCU to control the MOSQ9.

[0068] In the voltage output enabling module (such as Figure 6), 3.3V enable and 0.9V enable, the utility model selects DC-DC step-down conversion chip TLV62569DBVR which has 35uA static working current, high efficiency and low power consumption, 4 feet of MCU are connected to OFF / ON-POWER-3V3, 5 feet of MCU are connected to KEY-DETECT, switch S1 in the key module is connected to KEY1, when the switch is pressed, the drain electrode of MOS tube Q2 is pulled low, at this time, MOS tube Q3 is turned on, U2EN enable pin is pulled high, DC-DC step-down conversion chip U2 starts to work, realizes step-down through inductance L2 and the internal circuit of DC-DC step-down conversion chip U2, after being filtered through capacitor C12, capacitor C13, C14 and capacitor C15, 3.3V is output and is connected with resistor R15 and light emitting diode LED5, represents power indicator, when there is 3.3V power supply in the loop, MCU starts to work, KEY-DETECT can detect the key state, when the key is pressed, KEY-DETECT is pulled low, and when it is released, KEY-DETECT is pulled high by resistor R11, so that the switch-on and switch-off can be realized through a key, the switch-on state is turned on after the switch-off state of switch S1 key is pressed for the first time, and the switch-on state is turned off after being pressed for 3 seconds, because the sensor needs a heater 0.9V voltage, DC-DC step-down conversion chip U3 of the same model is selected again, 9 feet of MCU are connected to OFF / ON-POWER-0V9, so that the single-chip microcomputer controls MOS tube Q4, when the drain electrode of MOS tube Q4 is pulled low, MOS tube Q5 is turned on, the EN enable pin of DC-DC step-down conversion chip U3 is pulled high, DC-DC step-down conversion chip U3 starts to work, realizes step-down through inductance L3 and the internal circuit of DC-DC step-down conversion chip U3, after being filtered through capacitor C18, capacitor C19, capacitor C20 and capacitor C21, 0.9V is output.

[0069] Sensor module (such as Figure 7 ), the power strip CN6 is connected to the 15 feet of MCU through resistor R46, controls the LED lamp on the sensor probe plate, sets the fast and slow of the flicker to indicate the size of the detected gas concentration, resistor R45 is a load resistor, is connected with 5V, provides 5V circuit voltage for the sensor, is connected with operational amplifier U5 to obtain a stable detection signal, is connected with switch diode D4 and filter capacitor C29, is connected with ADC-SENSOR on the 17 feet of MCU, so that the MCU can monitor the sensor concentration and make a response.

[0070] Battery voltage monitoring module (such as Figure 8), ON / OFF-DET-VBAT is connected to pin 19 of MCU, MOS tube Q6 is PMOS, MOS tube Q6 can realize battery voltage time-sharing detection through MOS tube Q8, MOS tube Q6 can reduce circuit power consumption, and the back is connected with resistor R35, resistor R36, resistor R40 and resistor R38 for voltage division filtering, ADC-VBAT is connected to pin 18 of MCU, and AD sampling is made, and the supply battery voltage is collected.

[0071] In the key module (such as Figure 9 ), S1, S2, S3 and S4 are respectively switch, mute switch, sensitivity adjustment and lighting switch, which are connected to the main control board through the socket CN7, S1 is connected to the 3.3V voltage reduction circuit, the key state is detected to switch on and off, and the capacitor C25, the capacitor C26 and the capacitor C27 are filter capacitors which are connected to pin 10, pin 11 and pin 12 of MCU after interference is filtered out.

[0072] In the passive buzzer driving module (such as Figure 10 ), PWM-BEEP is connected to pin 13 of MCU, the buzzer rings when the sensor detects the refrigerant mixture, and the MCU drives the buzzer through MOS tube Q10.

[0073] In the fan control module (such as Figure 11 ), the fan is connected to the socket CN5, PWM-FAN is connected to pin 14 of MCU, the MCU controls MOS tube Q7 to control the switch and rotating speed of the fan, and the fan is used to draw gas to the sensor for detection.

[0074] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fluorine leakage detector, comprising an MCU master chip module, characterized in that: the chip model of the MCU master chip module is SC92F7413X28U; the MCU master chip module is connected with a digital tube module; the MCU master chip module is connected with a UV violet light lamp module; the MCU master chip module is connected with a power supply module, and the power supply module is internally provided with a charging management chip U1; the MCU master chip module is connected with an illumination module; the MCU master chip module is connected with a voltage output enabling module, the voltage output enabling module is internally provided with a DC-DC step-down conversion chip, and the voltage output enabling module is connected with a key module; the MCU master chip module is connected with a sensor module, and the sensor module is internally provided with an operational amplifier U5; the MCU master chip module is connected with a battery voltage detection module; the MCU master chip module is connected with a key module, a passive buzzer driving module and a fan control module.

2. The fluorine leakage detector according to claim 1, characterized in that: the model of the digital tube module is FJ8106BH; the 28th pin of the MCU master chip module is connected with the 7th pin of the digital tube module through a resistor R25, the 27th pin of the MCU master chip module is connected with the 6th pin of the digital tube module through a resistor R26, the 26th pin of the MCU master chip module is connected with the 4th pin of the digital tube module through a resistor R27, the 25th pin of the MCU master chip module is connected with the 2nd pin of the digital tube module through a resistor R28, the 24th pin of the MCU master chip module is connected with the 1st pin of the digital tube module through a resistor R29, the 23rd pin of the MCU master chip module is connected with the 9th pin of the digital tube module through a resistor R30, and the 22nd pin of the MCU master chip module is connected with the 10th pin of the digital tube module through a resistor R31.

3. The fluorine leakage detector according to claim 1, characterized in that: the 21st pin of the MCU master chip module is connected with an LED-UV of the UV violet light lamp module, the LED-UV is connected with a resistor R52, the resistor R52 is connected with a resistor R53, the resistor R52 and the resistor R53 are connected with a MOS tube Q11, the MOS tube Q11 is connected with an LED9 through a resistor R50 and connected with an LED10 through a resistor R51.

4. The fluorine leakage detector according to claim 1, characterized in that: the model of the charging management chip U1 is IP5310; the charging management chip U1 is connected with a TYPE-C power input CN2 through a resistor R1, a resistor R2, a resistor R4, a capacitor C3 and a capacitor C5, and connected with a battery through a resistor R3, a capacitor C1 and a capacitor C2, and the 2nd pin of the MCU master chip module is connected with the charging management chip U1.

5. The fluorine leakage detector according to claim 1, characterized in that: the 20th pin of the MCU master chip module is connected with an LED of the illumination module, the LED is connected with a resistor R44, the resistor R44 is connected with a resistor R47, the resistor R44 and the resistor R47 are connected with a MOS tube Q9, the MOS tube Q9 is connected with an LED6 through a resistor R41, an LED7 through a resistor R42 and an LED8 through a resistor R43.

6. The fluorine leakage detector according to claim 1, characterized in that: the voltage output enabling module comprises 3.3V enabling and 0.9V enabling. The 3.3V enablement is provided with a DC-DC step-down conversion chip U2, and the 0.9V enablement is provided with a DC-DC step-down conversion chip U3, both of which are TLV62569DBVR; The 4-pin of the MCU master chip module is connected with the OFF / ON-POWER-3V3 of the 3.3V enablement, the 5-pin of the MCU master chip module is connected with the EY-DETECT of the 3.3V enablement, the EY-DETECT is connected with the KEY1 of the 3.3V enablement, the KEY1 is connected with the key module, the DC-DC step-down conversion chip U2 is connected with the resistor R15 and the light emitting diode LED5 after being filtered by the capacitor C12, the capacitor C13, the capacitor C14 and the capacitor C15; The 9-pin of the MCU master chip module is connected with the OFF / ON-POWER-0V9 of the 0.9V enablement, and the DC-DC step-down conversion chip U3 is connected with the resistor R34 and the resistor R37 after being filtered by the capacitor C18, the capacitor C19, the capacitor C20 and the capacitor C21.

7. The fluorine leakage detector according to claim 1, characterized in that: The sensor module is PH-4AWT; The 15-pin of the MCU master chip module is connected with the 1-pin of the sensor module through the resistor R46; The 1-pin of the operational amplifier U5 is connected with the 2-pin of the sensor module, the 4-pin of the operational amplifier U5 is connected with the switching diode D4 and the capacitor C29, and is connected with the 17-pin of the MCU master chip module through the ADC-SENSOR.

8. The fluorine leakage detector according to claim 1, characterized in that: The 19-pin of the MCU master chip module is connected with the ON / OFF-DET-VBAT of the battery voltage detection module; The ON / OFF-DET-VBAT is connected with the resistor R38, the resistor R38 is connected with the resistor R39, the resistor R38 and the resistor R39 are connected with the MOS tube Q8, the MOS tube Q8 is connected with the MOS tube Q6, the MOS tube Q6 is connected with the ADC-VBAT after being filtered by the resistor R35, the resistor R36, the resistor R40 and the resistor R38, and the ADC-VBAT is connected with the 18-pin of the MCU master chip module.

9. The fluorine leakage detector according to claim 6, characterized in that: The key module is provided with the power-on switch S1, the mute switch S2, the sensitivity adjustment S3 and the lighting switch S4; The KEY1 is connected with the power-on switch S1 of the key module, and the key module is provided with the capacitor C25, the capacitor C26 and the capacitor C27, which are respectively connected with the 10-pin, the 11-pin and the 12-pin of the MCU master chip module.

10. The fluorine leakage detector according to claim 1, characterized in that: The 13-pin of the MCU master chip module is connected with the PWM-BEEP of the passive buzzer driving module, the PWM-BEEP is connected with the resistor R48, the resistor R48 is connected with the resistor R49, and the resistor R48 and the resistor R49 are connected with the MOS tube Q10; The 14-pin of the MCU master chip module is connected with the PWM-FAN of the fan control module, the PWM-FAN is connected with the resistor R34, the resistor R34 is connected with the resistor R37, the resistor R34 and the resistor R37 are connected with the MOS tube Q7, the MOS tube Q7 is connected with the 2-pin of the power strip CN5, and the power strip CN5 is connected with the fan.

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