CN213457711U

CN213457711U - Pulse solenoid valve control circuit for medical equipment

Info

Publication number: CN213457711U
Application number: CN202022339218.3U
Authority: CN
Inventors: 邱晓娟; 韩举兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-15
Anticipated expiration: 2030-10-20

Abstract

The utility model relates to the field of medical equipment, especially, relate to a pulse solenoid valve control circuit for medical equipment. The utility model provides an energy-saving and almost non-heating pulse electromagnetic valve control circuit for medical equipment. In order to solve the technical problem, the pulse electromagnetic valve control circuit for the medical equipment comprises an MCU, a power supply circuit, an H-bridge circuit, a pulse electromagnetic valve and the like; the output end of the MCU is connected with the input end of the H-bridge circuit, the output end of the power supply circuit is connected with the input end of the H-bridge circuit, and the output end of the H-bridge circuit is connected with the input end of the pulse electromagnetic valve. The utility model discloses a MCU, power supply circuit, H bridge circuit and pulse solenoid valve's effect to this reaches the purpose that the user can directly use MCU control, through MCU output positive pulse, opens pulse solenoid valve, through MCU output negative pulse, closes pulse solenoid valve.

Description

Pulse solenoid valve control circuit for medical equipment

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a pulse solenoid valve control circuit for medical equipment.

Background

In automatic control, if the electromagnetic valve is widely used in medical equipment, the existing general electromagnetic valve generally adopts commercial power or industrial electricity, current flows through an electromagnetic coil to generate a magnetic field, a valve core is attracted, closing or opening is realized, in the working process, the electromagnetic coil is electrified for a long time, high temperature is easily generated, even the coil is burnt to cause accidents, in a high-temperature and humid environment, the general electromagnetic valve is easy to generate faults and electric leakage, in the absence of electricity or power failure, the general electromagnetic valve cannot work, and if other power supplies are adopted, because the general electromagnetic valve consumes large electricity, a series of problems of power supply and circuit installation exist.

How to design an energy-saving and almost non-heating pulse electromagnetic valve control circuit for medical equipment becomes a problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

In order to overcome the solenoid and be switched on for a long time, very easily produce high temperature and burn out the shortcoming that the solenoid caused the accident even, the utility model discloses a technical problem: provided is an energy-saving pulse electromagnetic valve control circuit for medical equipment which hardly generates heat.

The utility model provides a pulse solenoid valve control circuit for medical equipment, is including MCU, power supply circuit, H bridge circuit and pulse solenoid valve, MCU's output is connected with H bridge circuit's input, power supply circuit's output is connected with H bridge circuit's input, H bridge circuit's output is connected with pulse solenoid valve's input.

Further, still including first exclusive or gate circuit and second exclusive or gate circuit, MCU's output is connected with the input of first exclusive or gate circuit, MCU's output is connected with the input of second exclusive or gate circuit, through first exclusive or gate circuit and second exclusive or gate circuit, can prevent to export two high levels simultaneously, guarantees to export the turn-on signal when letting pulse solenoid valve open at every turn, lets output the turn-off signal when pulse solenoid valve is closed.

The output end of the first XOR gate circuit is connected with the input end of the first Schmitt trigger circuit, the output end of the power supply circuit is connected with the input end of the second Schmitt trigger circuit, the output end of the second Schmitt trigger circuit is connected with the input end of the H-bridge circuit, and the H-bridge circuit can be triggered to work through the first Schmitt trigger circuit and the second Schmitt trigger circuit.

Further, the power supply circuit, the H-bridge circuit and the pulse solenoid valve include a MOS transistor Q3, a MOS transistor Q4, a MOS transistor Q5, a MOS transistor Q6, an electrolytic capacitor EC1 and a solenoid valve J1, a source of the MOS transistor Q3 is connected to a source of the MOS transistor Q4 and an anode of the electrolytic capacitor EC1, a source of the MOS transistor Q4 is connected to a power supply terminal +12V, a cathode of the electrolytic capacitor EC1 is connected to a source of the MOS transistor Q6 and a source of the MOS transistor Q5, a source of the MOS transistor Q6 is grounded, a drain of the MOS transistor Q3 is connected to a drain of the MOS transistor Q5 and a pin 1 of the solenoid valve J1, and a drain of the MOS transistor Q4 is connected to a drain of the MOS transistor Q6 and a pin 2 of the solenoid valve J1.

Further, the first exclusive-or gate circuit and the second exclusive-or gate circuit include a diode D1, a diode D2, a third resistor R3, a sixth resistor R6, an NPN transistor Q1, and an NPN transistor Q2, a collector of the NPN transistor Q1 is connected to a negative electrode of the diode D1 and a negative electrode of the diode D2, a base of the NPN transistor Q1 is connected to one end of the third resistor R3, an emitter of the NPN transistor Q1 is connected to a collector of the NPN transistor Q2, a base of the NPN transistor Q2 is connected to one end of the sixth resistor R6, and an emitter of the NPN transistor Q2 is grounded.

Further, the first schmitt trigger circuit and the second schmitt trigger circuit include a first resistor R1, a second resistor R2, a fourth resistor R4, a fifth resistor R5, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a first capacitor C1, a second capacitor C2, and a four 2-input schmitt trigger CD4093-U1, wherein a pin 1 of the four 2-input schmitt trigger CD4093-U1 is respectively connected to a pin 2 of the four 2-input schmitt trigger CD4093-U1, one end of the fourth resistor R4 and one end of the first resistor R1, the other end of the first resistor R1 is respectively connected to one end of the second resistor R2, the anode of the diode D1, one end of the fifth resistor R5 and one end of the first capacitor C1, the other end of the second resistor R5953 is respectively connected to the other end of the third resistor R828653, and the other end of the third capacitor R82 1, One end of a second capacitor C2 is connected with one end of a seventh resistor R7, one end of the seventh resistor R7 is grounded, the other end of the fourth resistor R4 is respectively connected with the 4 pins of a four 2-input Schmitt trigger CD4093-U1 and the gate of a MOS tube Q6, the 3 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the 5 pins and 6 pins of a four 2-input Schmitt trigger CD4093-U1 and the gate of a MOS tube Q3, the 7 pins of the four 2-input Schmitt trigger CD4093-U1 are grounded, the 8 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the 9 pins of a four 2-input Schmitt trigger CD4093-U1, one end of a ninth resistor R9 and one end of a tenth resistor R10, the other end of the ninth resistor R9 is respectively connected with the positive electrode of a diode D2, the second resistor R23, the eighth resistor R8 and the other end of the seventh resistor R2, the other end of the eighth resistor R8 is connected with the other end of the sixth resistor R6, 10 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with 12 pins and 13 pins of the four 2-input Schmitt trigger CD4093-U1 and the grid electrode of the MOS tube Q4, 11 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the other end of the tenth resistor R10 and the grid electrode of the MOS tube Q5, and 14 pins of the four 2-input Schmitt trigger CD4093-U1 are connected with a power supply terminal + 12V.

The beneficial effects of the utility model reside in that: the utility model achieves the purposes that the MCU outputs positive pulse, the pulse solenoid valve is opened, the MCU outputs negative pulse and the pulse solenoid valve is closed by the functions of the MCU, the power supply circuit, the H-bridge circuit and the pulse solenoid valve; through the action of the first exclusive-or gate circuit and the second exclusive-or gate circuit, two high levels can be prevented from being output simultaneously, an on signal is output when the pulse electromagnetic valve is opened every time, and an off signal is output when the pulse electromagnetic valve is closed; the H-bridge circuit can be triggered to control the H-bridge circuit to work under the action of the first Schmitt trigger circuit and the second Schmitt trigger circuit.

Drawings

Fig. 1 is a circuit block diagram of the present invention.

Fig. 2 is a schematic circuit diagram of the present invention.

In the above drawings: 1. MCU, 2, first exclusive-or gate circuit, 3, second exclusive-or gate circuit, 4, power supply circuit, 5, first Schmitt trigger circuit, 6, second Schmitt trigger circuit, 7, H bridge circuit, 8, pulse solenoid valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example 1

A pulse electromagnetic valve control circuit for medical equipment is shown in figure 1 and comprises a MCU1, a power supply circuit 4, an H-bridge circuit 7 and a pulse electromagnetic valve 8, wherein the output end of the MCU1 is connected with the input end of the H-bridge circuit 7, the output end of the power supply circuit 4 is connected with the input end of the H-bridge circuit 7, and the output end of the H-bridge circuit 7 is connected with the input end of the pulse electromagnetic valve 8.

After the control circuit of the pulse electromagnetic valve 8 for the medical equipment is connected with the power supply circuit 4, a user directly controls the MCU1 at first, positive pulse is output through the MCU1, the pulse electromagnetic valve 8 is opened, negative pulse is output through the MCU1, and the pulse electromagnetic valve 8 is closed, so that the defects that a direct current valve and an alternating current valve work when the coil is electrified, do not work when the coil is not electrified, and easily cause large power consumption and easy heating of the coil are avoided.

Example 2

On the basis of embodiment 1, as shown in fig. 1, the pulse electromagnetic valve further includes a first exclusive-or gate circuit 2 and a second exclusive-or gate circuit 3, the output end of the MCU1 is connected to the input end of the first exclusive-or gate circuit 2, the output end of the MCU1 is connected to the input end of the second exclusive-or gate circuit 3, and through the first exclusive-or gate circuit 2 and the second exclusive-or gate circuit 3, two high levels can be prevented from being output simultaneously, an on signal is output every time the pulse electromagnetic valve 8 is turned on, and an off signal is output every time the pulse electromagnetic valve 8 is turned off.

Through first exclusive-or gate circuit 2 and second exclusive-or gate circuit 3, can prevent to export two high levels simultaneously, guarantee to export the turn-on signal when letting pulse solenoid valve 8 open at every turn, export the turn-off signal when letting pulse solenoid valve 8 close.

Example 3

In addition to embodiment 2, as shown in fig. 2, the present invention further includes a first schmitt trigger circuit 5 and a second schmitt trigger circuit 6, an output terminal of the first xor gate circuit 2 is connected to an input terminal of the first schmitt trigger circuit 5, an output terminal of the power supply circuit 4 is connected to an input terminal of the first schmitt trigger circuit 5, an output terminal of the first schmitt trigger circuit 5 is connected to an input terminal of an H-bridge circuit 7, an output terminal of the second xor gate circuit 3 is connected to an input terminal of the second schmitt trigger circuit 6, an output terminal of the power supply circuit 4 is connected to an input terminal of the second schmitt trigger circuit 6, an output terminal of the second schmitt trigger circuit 6 is connected to an input terminal of the H-bridge circuit 7, and the first schmitt trigger circuit 5 and the second schmitt trigger circuit 6 are connected to each other, the H-bridge circuit 7 can be triggered to control the H-bridge circuit 7 to work.

The first schmitt trigger circuit 5 and the second schmitt trigger circuit 6 can trigger the H-bridge circuit 7 to control the H-bridge circuit 7 to operate.

The power supply circuit 4, the H-bridge circuit 7 and the pulse solenoid valve 8 comprise a MOS transistor Q3, a MOS transistor Q4, a MOS transistor Q5, a MOS transistor Q6, an electrolytic capacitor EC1 and a solenoid valve J1, wherein a source of the MOS transistor Q3 is respectively connected with a source of the MOS transistor Q4 and an anode of the electrolytic capacitor EC1, a source of the MOS transistor Q4 is connected with a power supply terminal +12V, a cathode of the electrolytic capacitor EC1 is respectively connected with a source of the MOS transistor Q6 and a source of the MOS transistor Q5, a source of the MOS transistor Q6 is grounded, a drain of the MOS transistor Q3 is respectively connected with a drain of the MOS transistor Q5 and a pin 1 of the solenoid valve J1, and a drain of the MOS transistor Q4 is respectively connected with a drain of the MOS transistor Q6 and a pin 2 of the solenoid valve J1.

The first exclusive-or gate circuit 2 and the second exclusive-or gate circuit 3 include a diode D1, a diode D2, a third resistor R3, a sixth resistor R6, an NPN-type triode Q1 and an NPN-type triode Q2, a collector of the NPN-type triode Q1 is connected to a negative electrode of the diode D1 and a negative electrode of the diode D2, a base of the NPN-type triode Q1 is connected to one end of the third resistor R3, an emitter of the NPN-type triode Q1 is connected to a collector of the NPN-type triode Q2, a base of the NPN-type triode Q2 is connected to one end of the sixth resistor R6, and an emitter of the NPN-type triode Q2 is grounded.

The first schmitt trigger circuit 5 and the second schmitt trigger circuit 6 comprise a first resistor R1, a second resistor R2, a fourth resistor R4, a fifth resistor R5, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a first capacitor C1, a second capacitor C2 and a four 2-input schmitt trigger CD4093-U1, wherein a pin 1 of the four 2-input schmitt trigger CD4093-U1 is respectively connected with a pin 2 of the four 2-input schmitt trigger CD4093-U1, one end of the fourth resistor R4 and one end of the first resistor R1, the other end of the first resistor R1 is respectively connected with one end of the second resistor R2, an anode of the diode D1, one end of the fifth resistor R5 and one end of the first capacitor C1, the other end of the second resistor R5956 is respectively connected with one end of the third resistor R69553, and the other end of the third capacitor R82 1, One end of a second capacitor C2 is connected with one end of a seventh resistor R7, one end of the seventh resistor R7 is grounded, the other end of the fourth resistor R4 is respectively connected with the 4 pins of a four 2-input Schmitt trigger CD4093-U1 and the gate of a MOS tube Q6, the 3 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the 5 pins and 6 pins of a four 2-input Schmitt trigger CD4093-U1 and the gate of a MOS tube Q3, the 7 pins of the four 2-input Schmitt trigger CD4093-U1 are grounded, the 8 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the 9 pins of a four 2-input Schmitt trigger CD4093-U1, one end of a ninth resistor R9 and one end of a tenth resistor R10, the other end of the ninth resistor R9 is respectively connected with the positive electrode of a diode D2, the second resistor R23, the eighth resistor R8 and the other end of the seventh resistor R2, the other end of the eighth resistor R8 is connected with the other end of the sixth resistor R6, 10 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with 12 pins and 13 pins of the four 2-input Schmitt trigger CD4093-U1 and the grid electrode of the MOS tube Q4, 11 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the other end of the tenth resistor R10 and the grid electrode of the MOS tube Q5, and 14 pins of the four 2-input Schmitt trigger CD4093-U1 are connected with a power supply terminal + 12V.

After the control circuit of the pulse electromagnetic valve 8 for the medical equipment is connected with the power supply circuit 4, a user respectively outputs a high level and a low level through the MCU1, when the I/O1 of the MCU1 outputs the high level and the I/O2 of the MCU1 outputs the low level, an open signal is output through the exclusive-OR gate circuit at the moment, so that the Schmitt trigger circuit triggers the H-bridge circuit 7, the pulse electromagnetic valve 8 is opened, when the I/O1 of the MCU1 outputs the low level and the I/O2 of the MCU1 outputs the high level, and an open signal is output through the exclusive-OR gate circuit at the moment, so that the Schmitt trigger circuit triggers the H-bridge circuit 7 and closes the pulse electromagnetic valve 8, thereby achieving the purposes of avoiding the defects that a coil such as a direct current valve and an alternating current valve works when the coil is electrified, does not work, and the coil is easy to generate heat.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a pulse solenoid valve control circuit for medical equipment, including MCU (1) and power supply circuit (4), characterized by: the power supply device is characterized by further comprising an H-bridge circuit (7) and a pulse electromagnetic valve (8), wherein the output end of the MCU (1) is connected with the input end of the H-bridge circuit (7), the output end of the power supply circuit (4) is connected with the input end of the H-bridge circuit (7), and the output end of the H-bridge circuit (7) is connected with the input end of the pulse electromagnetic valve (8).

2. The control circuit of a pulse solenoid valve for a medical apparatus according to claim 1, wherein: still including first exclusive or gate circuit (2) and second exclusive or gate circuit (3), the output of MCU (1) is connected with the input of first exclusive or gate circuit (2), the output of MCU (1) is connected with the input of second exclusive or gate circuit (3), through first exclusive or gate circuit (2) and second exclusive or gate circuit (3), can prevent two high levels of simultaneous output, and the assurance is at every turn on time output turn-on signal when letting pulse solenoid valve (8) open, output switch signal when letting pulse solenoid valve (8) close.

3. The control circuit of a pulse solenoid valve for a medical apparatus according to claim 2, wherein: the power supply circuit also comprises a first Schmitt trigger circuit (5) and a second Schmitt trigger circuit (6), the output end of the first XOR gate circuit (2) is connected with the input end of the first Schmitt trigger circuit (5), the output end of the power supply circuit (4) is connected with the input end of the first Schmitt trigger circuit (5), the output end of the first Schmitt trigger circuit (5) is connected with the input end of an H-bridge circuit (7), the output end of the second XOR gate circuit (3) is connected with the input end of the second Schmitt trigger circuit (6), the output end of the power supply circuit (4) is connected with the input end of the second Schmitt trigger circuit (6), the output end of the second Schmitt trigger circuit (6) is connected with the input end of the H-bridge circuit (7), and the first Schmitt trigger circuit (5) and the second Schmitt trigger circuit (6) are used for controlling the power supply, the H-bridge circuit (7) can be triggered to control the H-bridge circuit (7) to work.

4. A pulse solenoid valve control circuit for a medical apparatus according to claim 3, wherein: the power supply circuit (4), the H-bridge circuit (7) and the pulse electromagnetic valve (8) comprise an MOS tube Q3, an MOS tube Q4, an MOS tube Q5, an MOS tube Q6, an electrolytic capacitor EC1 and an electromagnetic valve J1, wherein the source of the MOS tube Q3 is respectively connected with the source of the MOS tube Q4 and the anode of the electrolytic capacitor EC1, the source of the MOS tube Q4 is connected with a power supply end +12V, the cathode of the electrolytic capacitor EC1 is respectively connected with the source of the MOS tube Q6 and the source of the MOS tube Q5, the source of the MOS tube Q6 is grounded, the drain of the MOS tube Q3 is respectively connected with the drain of the MOS tube Q5 and the pin 1 of the electromagnetic valve J1, and the drain of the MOS tube Q4 is respectively connected with the drain of the MOS tube Q6 and the pin 2 of the electromagnetic valve J1.

5. The control circuit of a pulse solenoid valve for a medical apparatus according to claim 4, wherein: the first exclusive-or gate circuit (2) and the second exclusive-or gate circuit (3) comprise a diode D1, a diode D2, a third resistor R3, a sixth resistor R6, an NPN-type triode Q1 and an NPN-type triode Q2, a collector of the NPN-type triode Q1 is connected with a cathode of the diode D1 and a cathode of the diode D2 respectively, a base of the NPN-type triode Q1 is connected with one end of the third resistor R3, an emitter of the NPN-type triode Q1 is connected with an NPN-type collector of the NPN-type triode Q2, a base of the NPN-type triode Q2 is connected with one end of the sixth resistor R6, and an emitter of the NPN-type triode Q2 is grounded.

6. The control circuit of a pulse solenoid valve for a medical apparatus according to claim 5, wherein: the first Schmitt trigger circuit (5) and the second Schmitt trigger circuit (6) comprise a first resistor R1, a second resistor R2, a fourth resistor R4, a fifth resistor R5, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a first capacitor C1, a second capacitor C2 and a four 2-input Schmitt trigger CD4093-U1, wherein a pin 1 of the four 2-input Schmitt trigger CD4093-U1 is respectively connected with a pin 2 of the four 2-input Schmitt trigger CD4093-U1, one end of the fourth resistor R4 and one end of the first resistor R1, the other end of the first resistor R1 is respectively connected with one end of the second resistor R2, an anode of the diode D1, one end of the fifth resistor R5 and one end of the first capacitor C1, the other end of the second resistor R2 is respectively connected with a pin 2 of the second resistor R8653, and the other end of the first capacitor R82 1 is respectively connected with the other end of the third resistor R86 5, One end of a second capacitor C2 is connected with one end of a seventh resistor R7, one end of the seventh resistor R7 is grounded, the other end of the fourth resistor R4 is respectively connected with the 4 pins of a four 2-input Schmitt trigger CD4093-U1 and the gate of a MOS tube Q6, the 3 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the 5 pins and 6 pins of a four 2-input Schmitt trigger CD4093-U1 and the gate of a MOS tube Q3, the 7 pins of the four 2-input Schmitt trigger CD4093-U1 are grounded, the 8 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the 9 pins of a four 2-input Schmitt trigger CD4093-U1, one end of a ninth resistor R9 and one end of a tenth resistor R10, the other end of the ninth resistor R9 is respectively connected with the positive electrode of a diode D2, the second resistor R23, the eighth resistor R8 and the other end of the seventh resistor R2, the other end of the eighth resistor R8 is connected with the other end of the sixth resistor R6, 10 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with 12 pins and 13 pins of the four 2-input Schmitt trigger CD4093-U1 and the grid electrode of the MOS tube Q4, 11 pins of the four 2-input Schmitt trigger CD4093-U1 are respectively connected with the other end of the tenth resistor R10 and the grid electrode of the MOS tube Q5, and 14 pins of the four 2-input Schmitt trigger CD4093-U1 are connected with a power supply terminal + 12V.