CN203688609U - Large current pulse generator - Google Patents

Abstract

The utility model discloses a large current pulse generator which includes an ARM micro controller module, a lithium battery, a voltage conversion circuit module, a flyback switching power supply circuit module and a large current pulse discharge circuit module, wherein the ARM micro controller module is internally integrated with an A / D converter. The large current pulse discharge circuit module is composed of a capacitor bank discharge circuit, a resistor network circuit, and a discharge switching circuit which are connected in sequence; an input end of the ARM micro controller module is connected with a key operating circuit module; an output end of the ARM controller module is connected with an LCD display circuit module, a micro printer and a power supply drive circuit module; an output end of the flyback switching power supply circuit module is connected with a sampling signal conditioning circuit module; and the sampling signal conditioning circuit module is connected with the A / D converter and the ARM micro controller module. The large current pulse generator is small in size and easy to carry, can be applied to the electronic current transformer polarity test in order to reduce the labor intensity of workers, and can avoid the potential risk existing in the operation.

Description

A high current pulse generating device

technical field

The utility model relates to a pulse generating device, in particular to a large current pulse generating device which provides 150A to 500A pulse large current for the primary side of an electronic current transformer.

Background technique

With the increasing popularization of electronic current transformers, the requirements for equipment for detecting their polarity are also getting higher and higher. When performing detection, a large current source is required to feed pulse current to the primary side of the transformer. In practice, the rated current range of the primary side of different types of transformers is from 50A to 3000A. Therefore, higher requirements are placed on the controllability of the high-current pulse source. Since the rated current of the primary side of the actual electronic current transformer is mostly in the range of 600A to 2000A, and the polarity test usually needs to connect the current to the primary side of the electronic current transformer at least a quarter of its rated current. Therefore, the large current source needs to provide an adjustable current from 150A to 500A at least.

Due to the relatively high transformation ratio of the electronic current transformer, when detecting the polarity of the electronic current transformer in the prior art, it is necessary to equip a three-phase power supply and a special booster device in order to generate the instantaneous load on the primary side of the transformer. For high current, voltmeter, ammeter, etc. are also needed. At the same time, 3 to 5 people are required to cooperate to complete the test. The labor intensity of the staff is high, and the operation is potentially dangerous. Moreover, the autotransformer is bulky and inconvenient to carry. The use of a large current pulse generator to replace the three-phase power supply and booster equipment is the key to the device's portability and easy operation. However, in the prior art, there is no simple structure, reasonable design, and high reliability that can be applied to electronic devices. A large current pulse generating device for polarity detection of type current transformers.

Utility model content

The technical problem to be solved by the utility model is to provide a large current pulse generating device for the deficiencies in the above-mentioned prior art, which has a simple structure, reasonable design, small size, and is easy to carry. During the test, the labor intensity of the staff can be reduced, the potential danger of the staff's operation can be avoided, the voltage and current output precision is high, the practicability is strong, the application range is wide, and it is easy to popularize and use.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a large current pulse generating device, which is characterized in that: it includes an ARM microcontroller module integrated with an A/D converter inside, and each power consumption module in the device The lithium battery for power supply and the voltage conversion circuit module connected to the output terminal of the lithium battery and used to convert the output voltage of the lithium battery into the voltage required by each power module in the device, as well as the flyback switching power supply circuit module and the flyback A high-current pulse discharge circuit module connected to the output end of the switching power supply circuit module. The high-current pulse discharge circuit module is composed of a capacitor bank discharge circuit, a resistor network circuit and a discharge switch circuit connected in sequence. The discharge switch circuit is connected to the discharge switch circuit. The output terminal of the ARM microcontroller module is connected; the input terminal of the ARM microcontroller module is connected with a key operation circuit module, and the output terminal of the ARM microcontroller module is connected with an LCD display circuit module, a micro-printer and for A power drive circuit module that drives the flyback switching power supply circuit module, the flyback switching power supply circuit module is connected to the output end of the power drive circuit module, and the output terminal of the flyback switching power supply circuit module is connected with a sampling signal conditioning circuit module , the output end of the sampling signal conditioning circuit module is connected to the input end of the A/D converter and the input end of the ARM microcontroller module; the high current is 150A-500A.

The above-mentioned a kind of high-current pulse generating device is characterized in that: the output terminal of the lithium battery is connected with a battery voltage detection circuit module, and the battery voltage detection circuit module is connected with the input terminal of the ARM microcontroller module. The output terminal of the ARM microcontroller module is connected with an undervoltage protection circuit module, and the undervoltage protection circuit module is connected between the lithium battery and the input terminal of the flyback switching power supply circuit module.

The above-mentioned high-current pulse generating device is characterized in that: the ARM microcontroller module is mainly composed of an ARM microcontroller chip STM32F103VE.

The above-mentioned high-current pulse generating device is characterized in that: the flyback switching power supply circuit module includes a transformer T1, a MOS transistor Q1, an inductor L1, non-polar capacitors C1, C2 and C3, diodes D2 and D3, and a resistor R1 and R2; one end of the primary side coil of the transformer T1 is connected to one end of the resistor R1 and one end of the non-polar capacitor C1 and is the input terminal Vin of the flyback switching power supply circuit module, and the resistor R1 The other end of the non-polar capacitor C1 and the other end of the non-polar capacitor C1 are connected to the cathode of the diode D3, and the other end of the primary side coil of the transformer T1 is connected to the anode of the diode D3 and the drain of the MOS transistor Q1 , the gate of the MOS transistor Q1 is connected to the output terminal PWM of the power drive circuit module, the source of the MOS transistor Q1 is grounded, and one end of the secondary side coil of the transformer T1 is connected to the non-polar capacitor C2 One end of the diode D2 is connected to the anode of the diode D2, the other end of the non-polar capacitor C2 is connected to one end of the resistor R2, and the cathode of the diode D2 and the other end of the resistor R2 are connected to one end of the inductor L1 , the other end of the inductance L1 is connected to one end of the non-polar capacitor C3 and is the output terminal Vo of the flyback switching power supply circuit module, the other end of the secondary coil of the transformer T1 is connected to the non-polar capacitor The other ends of C3 are both grounded.

The above-mentioned high-current pulse generating device is characterized in that: the power drive circuit module includes a chip MIC4427, a chip TPS2812, a non-polar capacitor C12, MOS transistors Q3 and Q4, diodes D1, D6, D7 and D8, and a resistor R11 , R12, R14, R18, R30, R31, R32, R32*, R33, R33*, R35, R36, RS1, RS2 and RS3, the VS pin of the chip MIC4427 is connected to the +12V voltage of the voltage conversion circuit module The output terminals are connected, the GND pin of the chip MIC4427 is grounded, the INA pin of the chip MIC4427 is connected to one end of the resistor R12, the INB pin of the chip MIC4427 is connected to one end of the resistor R14, and the resistor The other end of R12 and the other end of resistor R14 are all connected to one end of resistor R11 and one end of resistor R18, and connected to the output terminal PWM1 of the ARM microcontroller module, the other end of the resistor R11 is connected to the other end of resistor R18 Both ends are grounded, and the OUTA pin and the OUTB pin of the chip MIC4427 are connected to the cathode of the diode D1, the cathode of the diode D6, one end of the resistor R30, and one end of the resistor R31, and the anode of the diode D1 and the resistor R30 The other end is connected to the 1IN pin of the chip TPS2812, the anode of the diode D6 and the other end of the resistor R31 are connected to the 2IN pin of the chip TPS2812, and the GND pin of the chip TPS2812 is grounded. The VCC pin of the chip TPS2812 is connected to the +12V voltage output terminal of the voltage conversion circuit module and grounded through the non-polar capacitor C12, and the 1OUT pin of the chip TPS2812 is connected to the cathode of the diode D7 and one end of the resistor R33 One end of the resistor R33* is connected, the anode of the diode D7, the other end of the resistor R33 and the other end of the resistor R33* are all connected to one end of the resistor R35 and the gate of the MOS transistor Q3, and the 2OUT of the chip TPS2812 The pin is connected to the cathode of the diode D8, one end of the resistor R32, and one end of the resistor R32*, and the anode of the diode D8, the other end of the resistor R32, and the other end of the resistor R32* are all connected to one end of the resistor R36 and the MOS transistor Q4 The gate of the MOS transistor Q3 is connected to the drain of the MOS transistor Q4 and is the output terminal PWM of the power drive circuit module, the other end of the resistor R35 is connected to the source of the MOS transistor Q3 , the other end of the resistor R36 and the source of the MOS transistor Q4 are all connected to one end of the resistor RS1, one end of the resistor RS2 and one end of the resistor RS3, the other end of the resistor RS1, the other end of the resistor RS2 and the resistor RS3 The other end of both are grounded.

The aforementioned high-current pulse generating device is characterized in that: the sampling signal conditioning circuit module includes a comparator chip LM393, an operational amplifier chip LM358, a diode D5, a polar capacitor C25, non-polar capacitors C22, C23 and C24, And resistors R200, R25, R26, R50 and R51; the anode of the diode D5 is connected to one end of the resistor R26 and is the input terminal U-IN of the sampling signal conditioning circuit module, and the cathode of the diode D5 is connected to the non-polar One end of the polar capacitor C22, the positive pole of the polar capacitor C25 and one end of the resistor R25 are connected, the other end of the non-polar capacitor C22 and the negative pole of the polar capacitor C25 are grounded, the other end of the resistor R26, the resistor R51 One end of one end of the non-polar capacitor C24 and one end of the non-polar capacitor C24 are all connected with the inverting input end of the comparator chip LM393 and the same input end of the operational amplifier chip LM358, the other end of the resistance R25, one end of the resistance R50 and the non-polarity One end of the polar capacitor C23 is connected to the same input end of the comparator chip LM393, the other end of the resistor R51, the other end of the non-polar capacitor C24, the other end of the resistor R50 and the non-polar capacitor C23 The other end of the comparator chip LM393 and the power supply end of the operational amplifier chip LM358 are all connected to the +5V voltage output end of the voltage conversion circuit module, and the ground end of the comparator chip LM393 and The ground terminals of the operational amplifier chip LM358 are all grounded, and the output terminal of the comparator chip LM393 is connected with the input terminal S2 of the ARM microcontroller module and connected with the +5V voltage output terminal of the voltage conversion circuit module through a resistor R200 , the inverting input terminal of the operational amplifier chip LM358 is connected with the output terminal of the operational amplifier chip LM358, and the output terminal of the operational amplifier chip LM358 is the output terminal S1 of the sampling signal conditioning circuit module and is connected to A/ The input terminals of the D converters are connected.

Compared with the prior art, the utility model has the following advantages:

1. The utility model adopts a modular design, the circuit structure is simple, the design is reasonable, and the wiring is convenient.

2. The utility model is small in size and easy to carry. Adopting the utility model provides a large current of 150A to 500A for the primary side of the electronic current transformer, which makes the polarity test of the electronic current transformer more convenient and can reduce the The labor intensity of the staff avoids the potential danger of the staff's operation.

3. The voltage and current output precision of the utility model is high, which helps to improve the reliability of the polarity test of the electronic current transformer.

4. The utility model can not only be applied to the polarity test of electronic current transformers, but also can be applied to other occasions with large current pulses. It has strong practicability, wide application range, and is convenient for popularization and use.

To sum up, the circuit structure of the utility model is simple, the design is reasonable, the volume is small, and it is easy to carry. It can reduce the labor intensity of the staff when applied to the polarity test of the electronic current transformer, and avoid the potential problems of the staff's operation. Dangerous, high voltage and current output accuracy, strong practicability, wide application range, and easy to promote and use.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is the block diagram of circuit principle of the utility model.

Fig. 2 is a schematic circuit diagram of the flyback switching power supply circuit module of the present invention.

Fig. 3 is a schematic circuit diagram of the power drive circuit module of the present invention.

Fig. 4 is a schematic circuit diagram of the sampling signal conditioning circuit module of the present invention.

Explanation of reference signs:

1—ARM microcontroller module; 1-1—A/D converter; 2—Lithium battery;

3—voltage conversion circuit module; 4—flyback switching power supply circuit module;

5—Large current pulse discharge circuit module; 5-1—Capacitor bank discharge circuit;

5-2—resistor network circuit; 5-3—discharge switch circuit; 6—key operation circuit module;

7—LCD display circuit module; 8—micro printer; 9—power drive circuit module;

10—sampling signal conditioning circuit module; 11—battery voltage detection circuit module;

12—undervoltage protection circuit module.

Detailed ways

As shown in Figure 1, the utility model comprises the ARM micro-controller module 1 that internally integrates with A/D converter 1-1, the lithium battery 2 that supplies power for each power consumption module in the device and the output terminal phase with lithium battery 2 Connected and used to convert the voltage output by the lithium battery 2 into the voltage conversion circuit module 3 required by each power module in the device, and the flyback switching power supply circuit module 4 and the output terminal of the flyback switching power supply circuit module 4. connected high-current pulse discharge circuit module 5, the high-current pulse discharge circuit module 5 is composed of capacitor bank discharge circuit 5-1, resistor network circuit 5-2 and discharge switch circuit 5-3 connected in sequence, the discharge The switch circuit 5-3 is connected with the output terminal of the ARM microcontroller module 1; the input terminal of the ARM microcontroller module 1 is connected with a button operation circuit module 6, and the output terminal of the ARM microcontroller module 1 is connected with LCD display circuit module 7, micro-printer 8 and the power drive circuit module 9 for driving the flyback switching power supply circuit module 4, the flyback switching power supply circuit module 4 is connected with the output end of the power supply drive circuit module 9, and the The output terminal of the flyback switching power supply circuit module 4 is connected with a sampling signal conditioning circuit module 10, the output terminal of the sampling signal conditioning circuit module 10 is connected with the input terminal of the A/D converter 1-1 and the ARM microcontroller module 1 The input terminals are all connected; the high current is 150A-500A.

As shown in Figure 1, in this embodiment, the output terminal of the lithium battery 2 is connected with a battery voltage detection circuit module 11, and the battery voltage detection circuit module 11 is connected with the input terminal of the ARM microcontroller module 1, so The output terminal of the ARM microcontroller module 1 is connected with an undervoltage protection circuit module 12 , and the undervoltage protection circuit module 12 is connected between the lithium battery 2 and the input terminal of the flyback switching power supply circuit module 4 .

In this embodiment, the ARM microcontroller module 1 is mainly composed of an ARM microcontroller chip STM32F103VE.

As shown in FIG. 2, in this embodiment, the flyback switching power supply circuit module 4 includes a transformer T1, a MOS transistor Q1, an inductor L1, non-polar capacitors C1, C2 and C3, diodes D2 and D3, and resistors R1 and R2; one end of the primary side coil of the transformer T1 is connected to one end of the resistor R1 and one end of the non-polar capacitor C1 and is the input terminal Vin of the flyback switching power supply circuit module 4, and the resistor R1 The other end and the other end of the non-polar capacitor C1 are connected to the cathode of the diode D3, the other end of the primary side coil of the transformer T1 is connected to the anode of the diode D3 and the drain of the MOS transistor Q1, The gate of the MOS transistor Q1 is connected to the output terminal PWM of the power drive circuit module 9, the source of the MOS transistor Q1 is grounded, and one end of the secondary side coil of the transformer T1 is connected to the non-polar capacitor C2 One end of the diode D2 is connected to the anode of the diode D2, the other end of the non-polar capacitor C2 is connected to one end of the resistor R2, and the cathode of the diode D2 and the other end of the resistor R2 are connected to one end of the inductor L1 , the other end of the inductance L1 is connected to one end of the non-polar capacitor C3 and is the output end Vo of the flyback switching power supply circuit module 4, and the other end of the secondary side coil of the transformer T1 is connected to the non-polar The other ends of the capacitor C3 are both grounded. Among them, the resistor R1, the non-polar capacitor C1 and the diode D3 constitute the RCD snubber circuit on the side of the primary coil of the transformer T1, and the resistor R2, the non-polar capacitor C2 and the diode D2 constitute the secondary coil side of the transformer T1 The RCD snubber circuit can ensure the safe and reliable operation of the flyback switching power supply circuit module 4 .

As shown in Figure 3, in this embodiment, the power drive circuit module 9 includes a chip MIC4427, a chip TPS2812, a non-polar capacitor C12, MOS transistors Q3 and Q4, diodes D1, D6, D7 and D8, resistors R11 and R12 , R14, R18, R30, R31, R32, R32*, R33, R33*, R35, R36, RS1, RS2 and RS3, the VS pin of the chip MIC4427 and the +12V voltage output of the voltage conversion circuit module 3 The ends are connected, the GND pin of the chip MIC4427 is grounded, the INA pin of the chip MIC4427 is connected to one end of the resistor R12, the INB pin of the chip MIC4427 is connected to one end of the resistor R14, and the resistor R12 The other end of the resistor R14 and the other end of the resistor R11 are connected to one end of the resistor R11 and one end of the resistor R18, and are connected to the output terminal PWM1 of the ARM microcontroller module 1, and the other end of the resistor R11 is connected to the other end of the resistor R18 Both ends are grounded, and the OUTA pin and the OUTB pin of the chip MIC4427 are connected to the cathode of the diode D1, the cathode of the diode D6, one end of the resistor R30, and one end of the resistor R31, and the anode of the diode D1 and the resistor R30 The other end is connected to the 1IN pin of the chip TPS2812, the anode of the diode D6 and the other end of the resistor R31 are connected to the 2IN pin of the chip TPS2812, and the GND pin of the chip TPS2812 is grounded. The VCC pin of the chip TPS2812 is connected to the +12V voltage output terminal of the voltage conversion circuit module 3 and grounded through the non-polar capacitor C12, and the 1OUT pin of the chip TPS2812 is connected to the cathode of the diode D7 and the resistor R33. One end is connected to one end of the resistor R33*, the anode of the diode D7, the other end of the resistor R33 and the other end of the resistor R33* are all connected to one end of the resistor R35 and the gate of the MOS transistor Q3, and the chip TPS2812 The 2OUT pin is connected to the cathode of the diode D8, one end of the resistor R32 and one end of the resistor R32*, and the anode of the diode D8, the other end of the resistor R32 and the other end of the resistor R32* are all connected to one end of the resistor R36 and the MOS tube The gate of Q4 is connected, the drain of the MOS transistor Q3 is connected to the drain of the MOS transistor Q4 and is the output terminal PWM of the power drive circuit module 9, the other end of the resistor R35 is connected to the drain of the MOS transistor Q3 The source, the other end of the resistor R36 and the source of the MOS transistor Q4 are all connected to one end of the resistor RS1, one end of the resistor RS2 and one end of the resistor RS3, the other end of the resistor RS1, the other end of the resistor RS2 and The other ends of the resistor RS3 are both grounded. The signal output by the ARM microcontroller module 1 increases the voltage through the chip MIC4427, and then increases the driving current through the chip TPS2812 to drive the MOS transistors Q3 and Q4, so that the MOS transistors Q3 and Q4 can be turned on and off more quickly.

As shown in Figure 4, in this embodiment, the sampling signal conditioning circuit module 10 includes a comparator chip LM393, an operational amplifier chip LM358, a diode D5, a polar capacitor C25, non-polar capacitors C22, C23 and C24, and a resistor R200, R25, R26, R50 and R51; the anode of the diode D5 is connected to one end of the resistor R26 and is the input terminal U-IN of the sampling signal conditioning circuit module 10, and the cathode of the diode D5 is connected to the non-polarity One end of the capacitor C22, the positive pole of the polar capacitor C25 is connected to one end of the resistor R25, the other end of the non-polar capacitor C22 and the negative pole of the polar capacitor C25 are grounded, the other end of the resistor R26, the resistor R51 One end and one end of the nonpolar capacitor C24 are all connected with the inverting input end of the comparator chip LM393 and the same input end of the operational amplifier chip LM358, the other end of the resistor R25, one end of the resistor R50 and the nonpolar One end of the polar capacitor C23 is connected to the same input end of the comparator chip LM393, the other end of the resistor R51, the other end of the non-polar capacitor C24, the other end of the resistor R50 and the non-polar capacitor C23 The other ends are all grounded, the power supply terminal of the comparator chip LM393 and the power supply terminal of the operational amplifier chip LM358 are all connected with the +5V voltage output terminal of the voltage conversion circuit module 3, the ground terminal of the comparator chip LM393 and The ground terminals of the operational amplifier chip LM358 are all grounded, and the output terminal of the comparator chip LM393 is connected to the input terminal S2 of the ARM microcontroller module 1 and connected to the +5V voltage output terminal of the voltage conversion circuit module 3 through a resistor R200 connected, the reverse input end of the operational amplifier chip LM358 is connected with the output end of the operational amplifier chip LM358, the output end of the operational amplifier chip LM358 is the output end S1 of the sampling signal conditioning circuit module 10 and It is connected with the input end of the A/D converter 1-1. The input terminal U-IN of the sampling signal conditioning circuit module 10 is connected to the output terminal of the flyback switching power supply circuit module 4, and the voltage output by the flyback switching power supply circuit module 4 directly passes through the resistor R26 before the diode D5 Divide the voltage with the resistor R51 and connect it with the inverting input terminal of the comparator chip LM393, connect the polarity capacitor C25 after the diode D5, and then divide the voltage with the resistor R25 and resistor R50 and connect it with the positive input terminal of the comparator chip LM393 connected to form a discharge trigger circuit. When the capacitor bank discharge circuit 5-1 starts to discharge, the voltage at the reverse input terminal of the comparator chip LM393 drops rapidly, and the voltage at the positive input terminal of the comparator chip LM393 is at the polarity capacitor C25 Under the effect of maintaining a high voltage for a period of time, the output terminal of the comparator chip LM393 outputs a high level, triggering the external interrupt of the ARM microcontroller module 1, and the ARM microcontroller module 1 starts to save the A/D converter 1-1 The data after A/D conversion; the non-polar capacitors C22 and C23 are used for filtering to reduce the impact of large current on the discharge trigger circuit; the operational amplifier chip LM358 and the non-polar capacitor C24 constitute a voltage follower, The voltage output by the flyback switching power supply circuit module 4 is divided by the resistor R26 and the resistor R51 so that the voltage is within 0-3.3V, and then the voltage output by the flyback switching power supply circuit module 4 is output to the A/D converter 1-1 in ARM microcontroller module 1.

The operating principle and working process of the present utility model are: the ARM micro-controller module 1 drives the flyback switching power supply circuit module 4 to output constant voltages of four gears of 100V, 150V, 200V and 250V through the power supply drive circuit module 9, for The capacitor bank discharge circuit 5-1 provides a high-precision power supply, which is output after passing through the resistor network circuit 5-2 and the discharge switch circuit 5-3 in sequence, and the ARM microcontroller module 1 controls the discharge switch circuit 5-3, Provide a large current of 150A to 500A for the primary side of the electronic current transformer; the sampling signal conditioning circuit module 10 performs filtering and conditioning on the voltage output by the flyback switching power supply circuit module 4 and outputs it to the A/D converter 1-1 for A After the /D conversion, the ARM microcontroller module 1 accurately adjusts the output voltage of the flyback switching power supply circuit module 4 according to the signal after the A/D conversion by the A/D converter 1-1, and the LCD display circuit module 7 can Display the output voltage and current, and the micro-printer 8 can print the output voltage and current.

In the above work process, the battery voltage detection circuit module 11 detects the voltage of the lithium battery 2 in real time and outputs the detected signal to the ARM microcontroller module 1, and the ARM microcontroller module 1 receives the detected voltage signal Compared with the undervoltage threshold, when the detected voltage signal is less than the undervoltage threshold, it indicates that the lithium battery 2 is undervoltage. At this time, the ARM microcontroller module 1 disconnects the lithium battery by controlling the undervoltage protection circuit module 12. 2. The power supply circuit that supplies power to the flyback switching power supply circuit module 4 achieves the purpose of protecting the flyback switching power supply circuit module 4.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (6)

1. A high-current pulse generating device, characterized in that: it includes an ARM microcontroller module (1) integrated with an A/D converter (1-1), a lithium battery ( 2) A voltage conversion circuit module (3) connected to the output terminal of the lithium battery (2) and used to convert the output voltage of the lithium battery (2) into the voltage required by each power module in the device, and a flyback switch The power supply circuit module (4) and the high-current pulse discharge circuit module (5) connected to the output end of the flyback switching power supply circuit module (4), the high-current pulse discharge circuit module (5) is composed of capacitors connected in sequence It consists of a discharge circuit (5-1), a resistor network circuit (5-2) and a discharge switch circuit (5-3), and the discharge switch circuit (5-3) is connected to the output terminal of the ARM microcontroller module (1) connected; the input terminal of the ARM microcontroller module (1) is connected with a button operation circuit module (6), and the output terminal of the ARM microcontroller module (1) is connected with an LCD display circuit module (7), a micro A printer (8) and a power drive circuit module (9) for driving the flyback switching power supply circuit module (4), the flyback switching power supply circuit module (4) is connected to the output end of the power drive circuit module (9) , the output terminal of the flyback switching power supply circuit module (4) is connected with a sampling signal conditioning circuit module (10), and the output terminal of the sampling signal conditioning circuit module (10) is connected with the A/D converter (1-1) The input terminals of the ARM micro-controller module (1) are all connected; the high current is 150A-500A. 2. A large current pulse generating device according to claim 1, characterized in that: the output terminal of the lithium battery (2) is connected with a battery voltage detection circuit module (11), and the battery voltage detection circuit module ( 11) Connected to the input terminal of the ARM microcontroller module (1), the output terminal of the ARM microcontroller module (1) is connected to an undervoltage protection circuit module (12), and the undervoltage protection circuit module (12) ) is connected between the lithium battery (2) and the input terminal of the flyback switching power supply circuit module (4). 3. A large current pulse generating device according to claim 1 or 2, characterized in that: the ARM microcontroller module (1) is mainly composed of an ARM microcontroller chip STM32F103VE. 4. A large current pulse generating device according to claim 1 or 2, characterized in that: the flyback switching power supply circuit module (4) includes a transformer T1, a MOS transistor Q1, an inductor L1, and a non-polar capacitor C1 , C2 and C3, diodes D2 and D3, and resistors R1 and R2; one end of the primary side coil of the transformer T1 is connected to one end of the resistor R1 and one end of the non-polar capacitor C1 and is the flyback switch The input terminal Vin of the power circuit module (4), the other end of the resistor R1 and the other end of the non-polar capacitor C1 are both connected to the cathode of the diode D3, and the other end of the primary side coil of the transformer T1 is connected to the The anode of the diode D3 is connected to the drain of the MOS transistor Q1, the gate of the MOS transistor Q1 is connected to the output terminal PWM of the power drive circuit module (9), and the source of the MOS transistor Q1 is grounded. One end of the secondary side coil of the transformer T1 is connected to one end of the non-polar capacitor C2 and the anode of the diode D2, the other end of the non-polar capacitor C2 is connected to one end of the resistor R2, and the diode D2 The cathode and the other end of the resistor R2 are both connected to one end of the inductance L1, and the other end of the inductance L1 is connected to one end of the non-polar capacitor C3 and is the flyback switching power supply circuit module (4) The output terminal Vo, the other end of the secondary coil of the transformer T1 and the other end of the non-polar capacitor C3 are all grounded. 5. A large current pulse generating device according to claim 1 or 2, characterized in that: the power drive circuit module (9) includes chip MIC4427, chip TPS2812, non-polar capacitor C12, MOS tubes Q3 and Q4 , diodes D1, D6, D7 and D8, resistors R11, R12, R14, R18, R30, R31, R32, R32*, R33, R33*, R35, R36, RS1, RS2 and RS3, the VS tube of the chip MIC4427 The pin is connected to the +12V voltage output terminal of the voltage conversion circuit module (3), the GND pin of the chip MIC4427 is grounded, the INA pin of the chip MIC4427 is connected to one end of the resistor R12, and the chip MIC4427 The INB pin of the INB is connected to one end of the resistor R14, the other end of the resistor R12 and the other end of the resistor R14 are connected to one end of the resistor R11 and one end of the resistor R18, and connected to the ARM microcontroller module (1) The output terminal PWM1 is connected, the other end of the resistor R11 and the other end of the resistor R18 are grounded, the OUTA pin and the OUTB pin of the chip MIC4427 are connected to the cathode of the diode D1, the cathode of the diode D6, and one end of the resistor R30 One end of the resistor R31 is connected, the anode of the diode D1 and the other end of the resistor R30 are connected to the 1IN pin of the chip TPS2812, the anode of the diode D6 and the other end of the resistor R31 are connected to the chip The 2IN pins of TPS2812 are connected, the GND pin of the chip TPS2812 is grounded, the VCC pin of the chip TPS2812 is connected to the +12V voltage output terminal of the voltage conversion circuit module (3) and passed through a non-polar capacitor C12 is grounded, and the 1OUT pin of the chip TPS2812 is connected to the cathode of the diode D7, one end of the resistor R33, and one end of the resistor R33*, and the anode of the diode D7, the other end of the resistor R33, and the other end of the resistor R33* are all One end of the resistor R35 is connected to the gate of the MOS transistor Q3, the 2OUT pin of the chip TPS2812 is connected to the cathode of the diode D8, one end of the resistor R32 and one end of the resistor R32*, the anode of the diode D8, the resistor The other end of R32 and the other end of resistor R32* are both connected to one end of resistor R36 and the gate of MOS transistor Q4, the drain of the MOS transistor Q3 is connected to the drain of MOS transistor Q4 and is driven by the power supply The output terminal PWM of the circuit module (9), the other end of the resistor R35, the source of the MOS transistor Q3, the other end of the resistor R36, and the source of the MOS transistor Q4 are all connected to one end of the resistor RS1 and one end of the resistor RS2 It is connected to one end of the resistor RS3, and the other end of the resistor RS1, the other end of the resistor RS2 and the other end of the resistor RS3 are all grounded. 6. A large current pulse generating device according to claim 1 or 2, characterized in that the sampling signal conditioning circuit module (10) includes a comparator chip LM393, an operational amplifier chip LM358, a diode D5, and a polar capacitor C25, non-polar capacitors C22, C23 and C24, and resistors R200, R25, R26, R50 and R51; the anode of the diode D5 is connected to one end of the resistor R26 and is the sampling signal conditioning circuit module (10) Input terminal U-IN, the cathode of the diode D5 is connected to one end of the non-polar capacitor C22, the positive pole of the polar capacitor C25 and one end of the resistor R25, and the other end of the non-polar capacitor C22 is connected to the polar capacitor C25 The negative poles of the resistors are all grounded, and the other end of the resistor R26, one end of the resistor R51 and one end of the non-polar capacitor C24 are all connected to the inverting input end of the comparator chip LM393 and the same input end of the operational amplifier chip LM358 , the other end of the resistor R25, one end of the resistor R50 and one end of the non-polar capacitor C23 are all connected to the same input end of the comparator chip LM393, the other end of the resistor R51, the non-polar capacitor C24 The other end of the resistor R50 and the other end of the non-polar capacitor C23 are all grounded, and the power supply end of the comparator chip LM393 and the power supply end of the operational amplifier chip LM358 are connected to the voltage conversion circuit module (3) The +5V voltage output terminals are connected, the ground terminal of the comparator chip LM393 and the ground terminal of the operational amplifier chip LM358 are both grounded, and the output terminal of the comparator chip LM393 is connected to the input terminal S2 of the ARM microcontroller module (1). connected and connected to the +5V voltage output terminal of the voltage conversion circuit module (3) through a resistor R200, the output terminal of the operational amplifier chip LM358 is the output terminal S1 of the sampling signal conditioning circuit module (10) and It is connected with the input terminal of the A/D converter (1-1).

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