CN218301208U

CN218301208U - Equipment driving device

Info

Publication number: CN218301208U
Application number: CN202222001252.9U
Authority: CN
Inventors: 张富平; 刘永钦
Original assignee: Zhuhai Yuntaili Electronic Co ltd
Current assignee: Zhuhai Yuntaili Electronic Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-01-13
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses an equipment driving device, the first signal input opto-coupler isolation module of present case, the setting of second signal input opto-coupler isolation module, be convenient for realize host system and first controlled switch pipe switch module, the electrical isolation of circuit between the second controlled switch pipe switch module, when one side circuit receives the forceful electric pressure impact and damages, can not damage the opposite side circuit, the practicality is good, this case is through the PWM signal frequency who changes host system output so that control first controlled switch pipe switch module, the on-state frequency of second controlled switch pipe switch module, thereby realize this device output forward voltage or reverse voltage's PWM regulation, its implementation is convenient, because first signal input opto-coupler isolation module, second signal input opto-coupler isolation module still is equipped with the enable input end of being connected with host system respectively, do not need host system to control the ending that corresponds controlled switch pipe switch module through stopping output PWM signal during concrete implementation.

Description

Equipment driving device

Technical Field

The utility model relates to an equipment driving device.

Background

At present, the direct current voltage output by some direct current power supplies can commutate the positive electrode and the negative electrode, and is mainly realized by a mode of commutating a relay switch through an internal commutation circuit structure, and the defects of high cost, large volume, unstable internal resistance and performance and the like exist. In addition, most of the existing switching power supplies for outputting PWM pulses lack a reversing circuit, and most of the controllers and high-frequency switching tubes are not electrically isolated, so that when the high-frequency switching tubes are damaged due to strong voltage impact, the high-frequency switching tubes can directly damage the controllers and the like, and the whole power supply is scrapped and inconvenient to maintain. Therefore, how to overcome the above-mentioned drawbacks has become an important issue to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes above-mentioned technique is not enough, provides an equipment driving device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an equipment driving device, including host system 1, power module 2, first controlled switch pipe switch module 3, second controlled switch pipe switch module 4, be used for to the first power supply output link 5 and the second power supply output link 6 of equipment power supply, power module 2's a direct current voltage positive pole passes through first controlled switch pipe switch module 3 with first power supply output link 5 is connected, through second controlled switch pipe switch module 4 with second power supply output link 6 is connected, first power supply output link 5 with be connected with between power module 2's the earthing terminal and be used for ground connection control's third controlled switch pipe switch module 7, second power supply output link 6 with be connected with between power module 2's the earthing terminal and be used for ground connection control's fourth controlled switch pipe switch module 8, third controlled switch pipe switch module 7's control signal input, fourth controlled switch pipe switch module 8's control signal input respectively with host system 1 connects, host system 1 is equipped with signal output end, first controlled switch pipe switch module 3 with be connected with the second controlled switch input end of optical coupling signal input end and the second optical coupling input signal input end 10 make between the master system 1 and the second optical coupling input signal input end connect with the master control input end of optical coupling input end and the optical coupling signal input end of second optical coupling module 10.

Preferably, the first controlled switch tube switch module 3 includes an NMOS tube Q3 and a resistor R13, an S-pole of the NMOS tube Q3 is connected to one end of the resistor R13 and then connected to a dc voltage positive pole of the power module 2 as a switch end of the first controlled switch tube switch module 3, a D-pole of the NMOS tube Q3 is connected to the first power output connection terminal 5 as a switch other end of the first controlled switch tube switch module 3, and a G-pole of the NMOS tube Q3 is connected to the other end of the resistor R13 and then connected to a signal output terminal of the first signal input opto-coupler isolation module 9 as a control signal input terminal of the first controlled switch tube switch module 3; first signal input opto-coupler isolation module 9 is including opto-coupler PH1, resistance R11, PNP triode Q9, resistance R3, resistance R9's one end is regarded as first signal input opto-coupler isolation module 9's enable input end with a control signal output of host system 1 connects, resistance R9's the other end with resistance R3 one end, PNP triode Q9's base are connected, the resistance R3 other end with PNP triode Q9's projecting pole, power module 2's anodal voltage VCC connects, PNP triode Q9's collecting electrode passes through resistance R11 with opto-coupler PH 1's emitting diode is anodal to be connected, opto-coupler PH 1's emitting diode negative pole as first signal input opto-coupler isolation module 9's control signal input end with host system 1's PWM signal output end is connected, the projecting pole ground connection of opto-coupler PH 1's photoelectric reception triode, the collecting electrode of opto-coupler PH 1's photoelectric reception triode is regarded as first signal input isolation module 9's signal output end with the control signal input end of first controlled switch tube switch module 3 connects.

Preferably, the second controlled switch tube switch module 4 includes an NMOS tube Q8 and a resistor R19, an S-pole of the NMOS tube Q8 is connected to one end of the resistor R19 and then connected to a dc voltage positive pole of the power module 2 as a switch end of the second controlled switch tube switch module 4, a D-pole of the NMOS tube Q8 is connected to the second power supply output connection end 6 as a switch other end of the second controlled switch tube switch module 4, and a G-pole of the NMOS tube Q8 is connected to the other end of the resistor R19 and then connected to a signal output end of the first signal input opto-coupler isolation module 9 as a control signal input end of the second controlled switch tube switch module 4; second signal input opto-coupler isolation module 10 is including opto-coupler PH2, resistance R21, PNP triode Q4, resistance R12, resistance R8's one end is as second signal input opto-coupler isolation module 10's enable input end with a control signal output of host system 1 is connected, resistance R8's the other end with resistance R12 one end, PNP triode Q4's base are connected, the resistance R12 other end with PNP triode Q4's projecting pole the positive voltage VCC of power module 2 is connected, PNP triode Q4's collecting electrode passes through resistance R21 with opto-coupler PH 2's emitting diode positive pole is connected, opto-coupler PH 2's emitting diode negative pole as second signal input opto-coupler isolation module 10's PWM signal input end with host system 1PWM signal output end is connected, the projecting pole ground connection of opto-coupler PH 2's photoelectric reception triode, the collecting electrode of opto-coupler PH 2's photoelectric reception triode is as first signal input opto-coupler isolation module 9's signal output end with the control signal input end of first controlled switch pipe switch module 3 is connected.

Preferably, the third controlled switch tube switch module 7 includes an NMOS tube Q2, a resistor R14, and a resistor R15, one end of the resistor R15 is used as a control signal input end of the third controlled switch tube switch module 7 to be connected to a control signal output end of the main control module 1, the other end of the resistor R15 is connected to one end of the resistor R14 and a G pole of the NMOS tube Q2, the other end of the resistor R14 is connected to an S pole of the NMOS tube Q2 to be used as a switch end of the third controlled switch tube switch module 7 to be connected to a ground terminal of the power module 2, and a D pole of the NMOS tube Q2 is used as a switch other end of the third controlled switch tube switch module 7 to be connected to the first power output connection end 5.

Preferably, the fourth controlled switch tube switch module 8 includes an NMOS tube Q7, a resistor R16, and a resistor R17, one end of the resistor R17 is used as a control signal input end of the fourth controlled switch tube switch module 8 and is connected to a control signal output end of the main control module 1, the other end of the resistor R17 is connected to one end of the resistor R16 and a G pole of the NMOS tube Q7, the other end of the resistor R16 is connected to an S pole of the NMOS tube Q7 and then is used as a switch end of the fourth controlled switch tube switch module 8 and is connected to a ground terminal of the power module 2, and a D pole of the NMOS tube Q7 is used as a switch other end of the fourth controlled switch tube switch module 8 and is connected to the second power supply output connection end 6.

Preferably, a diode indicator light module 11 is connected between the first power supply output connection terminal 5 and the second power supply output connection terminal 6.

Preferably, the diode indicating lamp module 11 includes a resistor R7 and a light emitting diode LED1, one end of the resistor R7 is connected to the first power supply output connection end 5, the other end is connected to the anode of the light emitting diode LED1, and the cathode of the light emitting diode LED1 is connected to the second power supply output connection end 6.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the structure of the scheme is simple and easy to realize, the arrangement of the first controlled switch tube switch module is convenient for controlling whether the positive electrode of the direct-current voltage of the power supply module can be connected with the first power supply output connecting end, the arrangement of the fourth controlled switch tube switch module is convenient for controlling whether the second power supply output connecting end is connected with the grounding end of the power supply module, and the cooperation of the first controlled switch tube switch module and the fourth controlled switch tube switch module is convenient for controlling whether the positive voltage can be output between the first power supply output connecting end and the second power supply output connecting end; the second controlled switch tube switch module is arranged to control whether the positive electrode of the direct-current voltage of the power supply module can be connected with the second power supply output connection end, the third controlled switch tube switch module is arranged to control whether the first power supply output connection end is connected with the grounding end of the power supply module, and the first power supply output connection end and the second power supply output connection end can output reverse voltage or not through the cooperation of the first power supply output connection end and the second power supply output connection end; the arrangement of the first signal input optical coupling isolation module is convenient for realizing the electrical isolation of the circuit between the main control module and the first controlled switch tube switch module, when the circuit on one side is damaged due to strong voltage impact, the circuit on the other side cannot be damaged, and the practicability is good; the second signal input optical coupling isolation module is arranged to facilitate electrical isolation of a circuit between the main control module and the second controlled switch tube switch module, when the circuit on one side is impacted by strong voltage and damaged, the circuit on the other side cannot be damaged, and the practicability is good; the switching module adopts a switching tube instead of a relay, so that the volume of equipment is reduced, the practicability is good, and the market competitiveness is realized; in addition, during specific implementation, the amplitude of the output pulse can be changed by independently changing the size of the direct-current voltage of the power supply module, and the implementation is convenient.

Drawings

Fig. 1 is a block diagram of the structure of the present disclosure.

Fig. 2 is one of partial circuit diagrams of the present disclosure.

Fig. 3 is a second partial circuit diagram of the present invention.

Fig. 4 is a third partial circuit diagram of the present invention.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of examples to facilitate understanding by those skilled in the art:

as shown in fig. 1 to 4, an apparatus driving device includes a main control module 1, a power module 2, a first controlled switching tube switch module 3, a second controlled switching tube switch module 4, a first power supply output connection terminal 5 and a second power supply output connection terminal 6 for supplying power to an apparatus, the direct-current voltage anode of the power module 2 is connected with the first power supply output connecting end 5 through the first controlled switch tube switch module 3 and is connected with the second power supply output connecting end 6 through the second controlled switch tube switch module 4, a third controlled switch tube switch module 7 for ground control is connected between the first power supply output connection end 5 and the ground end of the power supply module 2, a fourth controlled switch tube switch module 8 for controlling grounding is connected between the second power supply output connection end 6 and the grounding end of the power supply module 2, the control signal input end of the third controlled switch tube switch module 7 and the control signal input end of the fourth controlled switch tube switch module 8 are respectively connected with the main control module 1, the main control module 1 is provided with a PWM signal output end, a first signal input optical coupling isolation module 9 is connected between the control signal input end of the first controlled switch tube switch module 3 and the PWM signal output end of the main control module 1, a second signal input optical coupling isolation module 10 is connected between the control signal input end of the second controlled switch tube switch module 4 and the PWM signal output end of the main control module 1, the first signal input optical coupling isolation module 9 is provided with an enable input end connected with the main control module 1, and an enabling input end connected with the main control module 1 is arranged on the second signal input optical coupling isolation module 10.

As described above, the structure of the present application is simple and easy to implement, the arrangement of the first controlled switching tube switch module 3 is convenient for controlling whether the positive electrode of the dc voltage of the power module 2 can be connected to the first power supply output connection terminal 5, the arrangement of the fourth controlled switching tube switch module 8 is convenient for controlling whether the second power supply output connection terminal 6 is connected to the ground terminal of the power module 2, and the cooperation of the first and second controlled switching tube switch modules is convenient for controlling whether the forward voltage can be output between the first power supply output connection terminal 5 and the second power supply output connection terminal 6; the second controlled switch tube switch module 4 is arranged to control whether the positive electrode of the direct-current voltage of the power module 2 can be connected with the second power supply output connection end 6, the third controlled switch tube switch module 7 is arranged to control whether the first power supply output connection end 5 is connected with the grounding end of the power module 2, and the cooperation of the first power supply output connection end 5 and the second power supply output connection end 6 is convenient to control whether reverse voltage can be output between the first power supply output connection end 5 and the second power supply output connection end 6; the arrangement of the first signal input optical coupling isolation module 9 is convenient for realizing the electrical isolation of the circuit between the main control module 1 and the first controlled switch tube switch module 3, when the circuit on one side is damaged by strong voltage impact, the circuit on the other side cannot be damaged, and the practicability is good; the second signal input optical coupling isolation module 10 is arranged to facilitate electrical isolation of a circuit between the main control module 1 and the second controlled switch tube switch module 4, when a circuit on one side is damaged due to strong voltage impact, the circuit on the other side cannot be damaged, and the practicability is good, so that the conduction frequency of the first controlled switch tube switch module 3 and the conduction frequency of the second controlled switch tube switch module 4 are controlled by changing the frequency of the PWM signal output by the main control module 1, so that the PWM regulation of the device for outputting forward voltage or reverse voltage is realized, and the device is convenient to implement, and in addition, because the first signal input optical coupling isolation module 9 and the second signal input optical coupling isolation module 10 are respectively provided with an enabling input end connected with the main control module 1, the device is convenient to control whether the PWM signal output by the main control module 1 can effectively control the conduction of the corresponding controlled switch tube switch module through the corresponding signal input optical coupling isolation module, the control is convenient, and the main control module 1 is not required to stop outputting the PWM signal to control the cut-off of the corresponding controlled switch tube switch module during specific implementation; the switching module adopts a switching tube instead of a relay, so that the volume of equipment is reduced, the practicability is good, and the market competitiveness is realized; in addition, during specific implementation, the amplitude of the output pulse can be changed by changing the direct-current voltage of the power module 2 independently, and the implementation is convenient.

As shown in fig. 4, in specific implementation, the first controlled switching tube switch module 3 includes an NMOS tube Q3 and a resistor R13, an S pole of the NMOS tube Q3 is connected to one end of the resistor R13 and then connected to a dc voltage positive pole of the power module 2 as a switch end of the first controlled switching tube switch module 3, a D pole of the NMOS tube Q3 is connected to the first power output connection end 5 as a switch other end of the first controlled switching tube switch module 3, and a G pole of the NMOS tube Q3 is connected to the other end of the resistor R13 and then connected to a signal output end of the first signal input opto-coupler isolation module 9 as a control signal input end of the first controlled switching tube switch module 3; first signal input opto-coupler isolation module 9 is including opto-coupler PH1, resistance R11, PNP triode Q9, resistance R3, resistance R9's one end is regarded as first signal input opto-coupler isolation module 9's enable input end with a control signal output of host system 1 connects, resistance R9's the other end with resistance R3 one end, PNP triode Q9's base are connected, the resistance R3 other end with PNP triode Q9's projecting pole, power module 2's anodal voltage VCC connects, PNP triode Q9's collecting electrode passes through resistance R11 with opto-coupler PH 1's emitting diode is anodal to be connected, opto-coupler PH 1's emitting diode negative pole as first signal input opto-coupler isolation module 9's control signal input end with host system 1's PWM signal output end is connected, the projecting pole ground connection of opto-coupler PH 1's photoelectric reception triode, the collecting electrode of opto-coupler PH 1's photoelectric reception triode is regarded as first signal input isolation module 9's signal output end with the control signal input end of first controlled switch tube switch module 3 connects.

As described above, in the present application, the first signal input optical coupler isolation module 9 works as follows, when the main control module 1 outputs a low level to the resistor R9, the voltage between the emitter and the base of the PNP triode Q9 is greater than a certain value, and the emitter and the collector of the PNP triode Q9 are connected, at this time, the PWM signal output end of the main control module 1 can output a signal through the optical coupler PH1 so as to perform PWM control on the first controlled switching tube switch module 3, whereas when the main control module 1 outputs a high level to the resistor R9, the emitter and the collector of the PNP triode Q9 are cut off, and the PWM signal output end of the main control module 1 cannot output a signal through the optical coupler PH1 so as to perform PWM control on the first controlled switching tube switch module 3, which is convenient to control.

As shown in fig. 4, in a specific implementation, the second controlled switching tube switch module 4 includes an NMOS tube Q8 and a resistor R19, an S-pole of the NMOS tube Q8 is connected to one end of the resistor R19 and then connected to a dc voltage positive pole of the power module 2 as a switch end of the second controlled switching tube switch module 4, a D-pole of the NMOS tube Q8 is connected to the second power output connection end 6 as a switch other end of the second controlled switching tube switch module 4, and a G-pole of the NMOS tube Q8 is connected to the other end of the resistor R19 and then connected to a signal output end of the first signal input opto-coupler isolation module 9 as a control signal input end of the second controlled switching tube switch module 4; second signal input opto-coupler isolation module 10 is including opto-coupler PH2, resistance R21, PNP triode Q4, resistance R12, resistance R8's one end is as second signal input opto-coupler isolation module 10's enable input end with a control signal output of host system 1 is connected, resistance R8's the other end with resistance R12 one end, PNP triode Q4's base are connected, the resistance R12 other end with PNP triode Q4's projecting pole the positive voltage VCC of power module 2 is connected, PNP triode Q4's collecting electrode passes through resistance R21 with opto-coupler PH 2's emitting diode positive pole is connected, opto-coupler PH 2's emitting diode negative pole as second signal input opto-coupler isolation module 10's PWM signal input end with host system 1PWM signal output end is connected, the projecting pole ground connection of opto-coupler PH 2's photoelectric reception triode, the collecting electrode of opto-coupler PH 2's photoelectric reception triode is as first signal input opto-coupler isolation module 9's signal output end with the control signal input end of first controlled switch pipe switch module 3 is connected.

As described above, in the present application, the working process of the second signal input optical coupler isolation module 10 is as follows, when the main control module 1 outputs a low level to the resistor R8, the voltage between the emitter and the base of the PNP triode Q4 is greater than a certain value, and the emitter and the collector of the PNP triode Q4 are connected, at this time, the PWM signal output end of the main control module 1 can output a signal through the optical coupler PH2 so as to perform PWM control on the second controlled switching tube switch module 4, whereas when the main control module 1 outputs a high level to the resistor R4, the emitter and the collector of the PNP triode Q4 are disconnected, and the PWM signal output end of the main control module 1 cannot output a signal through the optical coupler PH2 so as to perform PWM control on the first controlled switching tube switch module 3, and the control is convenient.

As shown in fig. 4, in specific implementation, the third controlled switch tube switch module 7 includes an NMOS tube Q2, a resistor R14, and a resistor R15, one end of the resistor R15 is used as a control signal input end of the third controlled switch tube switch module 7 to be connected to a control signal output end of the main control module 1, the other end of the resistor R15 is connected to one end of the resistor R14 and a G pole of the NMOS tube Q2, the other end of the resistor R14 is connected to an S pole of the NMOS tube Q2 to be used as a switch end of the third controlled switch tube switch module 7 to be connected to the ground terminal of the power module 2, and a D pole of the NMOS tube Q2 is used as a switch other end of the third controlled switch tube switch module 7 to be connected to the first power supply output connection end 5.

As described above, in the working process of the third controlled switch tube switch module 7 of this embodiment, when the main control module 1 outputs a high level to the control signal input terminal of the third controlled switch tube switch module 7, the voltage between the G pole and the S pole of the NMOS tube Q2 is greater than a certain value, the S pole and the D pole of the NMOS tube Q2 are turned on, the second power supply output connection terminal 6 is grounded, and conversely, when the main control module 1 outputs a low level to the control signal input terminal of the first power supply output connection terminal 5, the S pole and the D pole of the NMOS tube Q2 are turned off.

As shown in fig. 4, in specific implementation, the fourth controlled switching tube switching module 8 includes an NMOS tube Q7, a resistor R16, and a resistor R17, one end of the resistor R17 is used as a control signal input end of the fourth controlled switching tube switching module 8 and connected to a control signal output end of the main control module 1, the other end of the resistor R17 is connected to one end of the resistor R16 and a G pole of the NMOS tube Q7, the other end of the resistor R16 is connected to an S pole of the NMOS tube Q7 and then used as a switch end of the fourth controlled switching tube switching module 8 and connected to the ground terminal of the power module 2, and a D pole of the NMOS tube Q7 is used as a switch other end of the fourth controlled switching tube switching module 8 and connected to the second power output connection end 6.

As described above, in the working process of the fourth controlled switch tube switch module 8 of this embodiment, when the main control module 1 is at a high level to the control signal input end of the fourth controlled switch tube switch module 8, the voltage between the G pole and the S pole of the NMOS tube Q7 is greater than a certain value, the S pole and the D pole of the NMOS tube Q7 are turned on, and the second power supply output connection end 6 is grounded, otherwise, when the main control module 1 is at a low level to the control signal input end of the fourth controlled switch tube switch module 8, the S pole and the D pole of the NMOS tube are turned off.

As shown in fig. 4, in specific implementation, a diode indicator light module 11 is connected between the first power supply output connection terminal 5 and the second power supply output connection terminal 6, and is configured to indicate a working state.

As shown in fig. 4, in a specific implementation, the diode indicator light module 11 includes a resistor R7 and a light emitting diode LED1, one end of the resistor R7 is connected to the first power supply output connection terminal 5, the other end of the resistor R7 is connected to the anode of the light emitting diode LED1, and the cathode of the light emitting diode LED1 is connected to the second power supply output connection terminal 6.

As described above, the present disclosure is directed to a device driving apparatus, and all technical solutions that are the same as or similar to the present disclosure should be considered as falling within the scope of the present disclosure.

Claims

1. An equipment driving device is characterized by comprising a main control module (1), a power supply module (2), a first controlled switch tube switch module (3), a second controlled switch tube switch module (4), a first power supply output connecting end (5) and a second power supply output connecting end (6) for supplying power to equipment, wherein a direct current voltage positive pole of the power supply module (2) is connected with the first power supply output connecting end (5) through the first controlled switch tube switch module (3) and is connected with the second power supply output connecting end (6) through the second controlled switch tube switch module (4), a third controlled switch tube switch module (7) for ground control is connected between the first power supply output connecting end (5) and a grounding end of the power supply module (2), a fourth controlled switch tube switch module (8) for ground control is connected between the second power supply output connecting end (6) and the grounding end of the power supply module (2), a control signal input end of the third controlled switch tube switch module (7), a fourth controlled switch tube switch module (8) and a main control signal input end (1) of the main control signal input end (9) of the main control module, and a PWM signal output end (1) of the main control module are respectively connected with a first controlled switch module (3), the control signal input of second controlled switch pipe switch module (4) with be connected with second signal input opto-coupler isolation module (10) between the PWM signal output part of host system (1), be equipped with on first signal input opto-coupler isolation module (9) with the enable input that host system (1) is connected, be equipped with on second signal input opto-coupler isolation module (10) with the enable input that host system (1) is connected.

2. The device driving apparatus according to claim 1, wherein the first controlled switching tube switch module (3) comprises an NMOS tube Q3 and a resistor R13, an S-pole of the NMOS tube Q3 is connected to one end of the resistor R13 and then serves as a switch end of the first controlled switching tube switch module (3) to be connected to a dc voltage positive pole of the power module (2), a D-pole of the NMOS tube Q3 is connected to the first power output connection terminal (5) as a switch other end of the first controlled switching tube switch module (3), and a G-pole of the NMOS tube Q3 is connected to the other end of the resistor R13 and then serves as a control signal input end of the first controlled switching tube switch module (3) to be connected to a signal output end of the first signal input optical coupling isolation module (9); first signal input opto-coupler isolation module (9) is including opto-coupler PH1, resistance R11, PNP triode Q9, resistance R3, resistance R9's one end is as the enable input of first signal input opto-coupler isolation module (9) with a control signal output of host system (1) is connected, resistance R9's the other end with resistance R3 one end, PNP triode Q9's base are connected, the resistance R3 other end with PNP triode Q9's projecting pole, power module (2) an anodal voltage VCC connects, PNP triode Q9's collecting electrode passes through resistance R11 with opto-coupler PH 1's emitting diode positive pole is connected, opto-coupler PH 1's emitting diode negative pole as the control signal input of first signal input opto-coupler isolation module (9) with the PWM signal output of host system (1) connects, opto-coupler PH 1's projecting pole ground connection, the collecting electrode of opto-coupler PH 1's photoelectric reception triode is as the signal input of first signal input opto-coupler isolation module (9) with the controlled switch control signal input of first signal switch (3) connection.

3. The device driving apparatus according to claim 1, wherein the second controlled switching tube switching module (4) comprises an NMOS tube Q8 and a resistor R19, an S-pole of the NMOS tube Q8 is connected to one end of the resistor R19 and then serves as a switch end of the second controlled switching tube switching module (4) to be connected to a dc voltage positive pole of the power module (2), a D-pole of the NMOS tube Q8 is connected to the second power supply output connection terminal (6) as a switch other end of the second controlled switching tube switching module (4), and a G-pole of the NMOS tube Q8 is connected to the other end of the resistor R19 and then serves as a control signal input end of the second controlled switching tube switching module (4) to be connected to the signal output end of the first signal input optical coupling isolation module (9); second signal input opto-coupler isolation module (10) is including opto-coupler PH2, resistance R21, PNP triode Q4, resistance R12, resistance R8's one end is regarded as the messenger of second signal input opto-coupler isolation module (10) can the input with a control signal output of host system (1) is connected, resistance R8's the other end with resistance R12 one end, PNP triode Q4's base are connected, the resistance R12 other end with PNP triode Q4's projecting pole a positive voltage of power module (2) is connected, PNP triode Q4's collecting electrode passes through resistance R21 with opto-coupler PH 2's emitting diode positive pole is connected, opto-coupler PH 2's emitting diode negative pole as the PWM signal input of second signal input opto-coupler isolation module (10) with host system (1) PWM signal output end is connected, the projecting pole ground connection of PH 2's photoelectric reception triode, the collecting electrode of photoelectric reception triode of opto-coupler PH2 is regarded as the signal output of first signal input opto-coupler isolation module (9) with the controlled switch control signal input of first signal input end VCC (3) is connected.

4. The device driving apparatus according to claim 1, wherein the third controlled switching tube switching module (7) includes an NMOS tube Q2, a resistor R14, and a resistor R15, one end of the resistor R15 is used as a control signal input end of the third controlled switching tube switching module (7) and connected to one control signal output end of the main control module (1), the other end of the resistor R15 is connected to one end of the resistor R14 and a G pole of the NMOS tube Q2, the other end of the resistor R14 is connected to an S pole of the NMOS tube Q2 and then used as a switch end of the third controlled switching tube switching module (7) and connected to a ground end of the power module (2), and a D pole of the NMOS tube Q2 is used as a switch connection end of the third controlled switching tube switching module (7) and connected to the first power supply output terminal (5).

5. The device driving apparatus according to claim 1, wherein the fourth controlled switching tube switching module (8) includes an NMOS tube Q7, a resistor R16, and a resistor R17, one end of the resistor R17 is used as a control signal input end of the fourth controlled switching tube switching module (8) and connected to a control signal output end of the main control module (1), the other end of the resistor R17 is connected to one end of the resistor R16 and a G pole of the NMOS tube Q7, the other end of the resistor R16 is connected to an S pole of the NMOS tube Q7 and then used as a switch end of the fourth controlled switching tube switching module (8) and connected to a ground terminal of the power module (2), and a D pole of the NMOS tube Q7 is used as a switch other end of the fourth controlled switching tube switching module (8) and connected to the second power supply output connection terminal (6).

6. A device driver according to any of claims 1-5, characterised in that a diode indicator light module (11) is connected between the first supply output connection (5) and the second supply output connection (6).

7. A device driving apparatus according to claim 6, wherein the diode indicating lamp module (11) comprises a resistor R7 and a light emitting diode LED1, one end of the resistor R7 is connected to the first power supply output connection terminal (5), the other end is connected to the anode of the light emitting diode LED1, and the cathode of the light emitting diode LED1 is connected to the second power supply output connection terminal (6).