CN212784834U - Low-power consumption circuit of battery-driven gas electromagnetic valve - Google Patents
Low-power consumption circuit of battery-driven gas electromagnetic valve Download PDFInfo
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- CN212784834U CN212784834U CN202021730178.9U CN202021730178U CN212784834U CN 212784834 U CN212784834 U CN 212784834U CN 202021730178 U CN202021730178 U CN 202021730178U CN 212784834 U CN212784834 U CN 212784834U
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Abstract
The utility model provides a low-cost low-power consumption circuit who realizes battery drive gas solenoid valve, include: the device comprises a power supply, a power supply switch, a boost conversion circuit, a detection circuit, an energy storage device, a single chip microcomputer, a gas electromagnetic valve and an action switch; the power supply is respectively supplied with power by a power supply switch and the singlechip, and the power supply switch is sequentially connected with a boost conversion circuit, a detection circuit, an energy storage device, a gas electromagnetic valve and an action switch; the pins of the single chip microcomputer are respectively connected with the power supply switch, the boost conversion circuit, the detection circuit, the energy storage device and the action switch. The utility model discloses the scheme does not need power chip, just can realize using arbitrary battery start solenoid valve, can not increase the leakage current of battery simultaneously.
Description
Technical Field
The utility model relates to a gas solenoid valve technical field, in particular to low-cost low-power consumption circuit who realizes battery drive gas solenoid valve.
Background
At present, a gas pipeline is usually connected with an electromagnetic valve, and as an emergency cut-off device, the gas electromagnetic valve is driven to normally start by voltage above 9V, and the electromagnetic valve can be normally started by an external power supply in a traditional mode. With the rise of the internet of things, the electromagnetic valve provided with the wireless communication module is provided, the electromagnetic valve is powered by a battery, and the electromagnetic valve cannot be normally started due to the low voltage of the battery. The battery-driven solenoid valve usually uses a voltage boosting circuit, but this method is expensive, and also requires the battery to have sufficient output current capability, and the large capacitance used increases the leakage current of the battery, resulting in fast battery consumption.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the power consumption problem of the current battery-driven electromagnetic valve and reduce the requirement on the battery, the invention provides a low-cost electromagnetic valve driving circuit and method, which can realize the starting of the electromagnetic valve by using any battery without a power supply chip and can not increase the leakage current of the battery.
The utility model adopts the technical scheme as follows: a low-power consumption circuit for realizing a battery-driven gas electromagnetic valve at low cost comprises: the device comprises a power supply, a power supply switch, a boost conversion circuit, a detection circuit, an energy storage device, a single chip microcomputer, a gas electromagnetic valve and an action switch; the power supply is respectively supplied with power by a power supply switch and the singlechip, and the power supply switch is sequentially connected with a boost conversion circuit, a detection circuit, an energy storage device, a gas electromagnetic valve and an action switch; the pins of the single chip microcomputer are respectively connected with the power supply switch, the boost conversion circuit, the detection circuit, the energy storage device and the action switch.
Furthermore, the power supply switch is composed of a PMOS (P-channel metal oxide semiconductor) tube, a resistor R1 and a capacitor C1, the capacitor C1 is connected with the resistor R1 in parallel, the S pole of the PMOS tube is connected to a power supply, the G pole of the PMOS tube is connected to the IO port of the single chip microcomputer, and the capacitor C1 and the resistor R1 are respectively connected with the S pole and the G pole of the PMOS tube in parallel.
Furthermore, the boost conversion circuit comprises a resistor R3, a first NMOS (N-channel metal oxide semiconductor) tube and a diode D1, wherein one end of the resistor R3 is connected to a G pole of the first NMOS tube, the other end of the resistor R3 is connected to an S pole of the first NMOS tube, the G pole of the first NMOS tube is connected to a port of the singlechip timer, the S pole of the first NMOS tube is grounded, and the D pole of the first NMOS tube is connected to a D pole of a PMOS tube in the switching circuit; the cathode of the diode D1 is connected to the detection circuit, and the anode of the diode D1 is connected to the D pole of the first NMOS transistor in the boost converter circuit.
Furthermore, the energy storage element is a capacitor C2, the positive terminal of the energy storage element is connected to the negative terminal of a diode D1 in the boost conversion circuit and one end of the gas electromagnetic valve, and the negative terminal of the energy storage element is grounded.
Further, the detection circuit comprises a resistor R2 and a resistor R4; one end of the resistor R2 is connected to the cathode of the diode D1, the other end of the resistor R2 is connected to one end of the resistor R4 and the ADC port of the single chip microcomputer, and the other end of the resistor R4 is grounded.
Further, the action switch comprises a second NMOS transistor, a resistor R5, and a resistor R6; the D pole of the second NMOS tube is connected to the other end of the gas electromagnetic valve, the G pole is connected to the IO port of the single chip microcomputer, the S pole is connected to the ADC port of the single chip microcomputer, and the resistor R5 is connected with the G pole and the S pole of the second NMOS tube in parallel; one end of the resistor R6 is connected to the S pole of the second NMOS transistor, and the other end is grounded.
Further, the power supply circuit further comprises an inductor L1 arranged between the power supply switch and the boost conversion circuit, wherein one end of the inductor L1 is connected to the D pole of the PMOS transistor, and the other end of the inductor L1 is connected to the D pole of the first NMOS transistor.
Further, the power source is a battery. Compared with the prior art, the beneficial effects of the utility model are that:
1. the BOOST circuit used in the invention BOOSTs the energy storage device only under the condition of no load, has very low requirements on inductance and capacitance required by boosting, and can save the device cost.
2. The invention can drive the boosting only by the single chip microcomputer providing the PWM signal, does not need a BOOST power supply chip, and saves the cost of one chip.
3. The circuit power supply switch is in a closed state at ordinary times, no extra leakage current path is introduced to the battery, and the power consumption only exists when the electromagnetic valve is started. The battery life is improved.
4. The circuit of the invention does not discharge in the boosting process, so that the boosting time is very short, and the response time of the electromagnetic valve is ensured.
5. The speed of the circuit boosting can be adjusted through the PWM signal of the single chip microcomputer, and the charging current of the energy storage element is flexible and adjustable, so that the output current capability of the battery is not required, and the circuit boosting can adapt to any battery.
Drawings
Fig. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a circuit actual connection diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a low-cost low-power consumption circuit who realizes battery drive gas solenoid valve does not need power chip, just can realize using arbitrary battery start solenoid valve, can not increase the leakage current of battery simultaneously, specifically includes: the device comprises a power supply, a power supply switch, a boost conversion circuit, a detection circuit, an energy storage device, a single chip microcomputer, a gas electromagnetic valve and an action switch; the power supply is respectively supplied with power by a power supply switch and the singlechip, and the power supply switch is sequentially connected with a boost conversion circuit, a detection circuit, an energy storage device, a gas electromagnetic valve and an action switch; the pins of the single chip microcomputer are respectively connected with the power supply switch, the boost conversion circuit, the detection circuit, the energy storage device and the action switch.
In a preferred embodiment, as shown in fig. 2, the power supply switch is composed of a PMOS transistor, a resistor R1, and a capacitor C1, the capacitor C1 is connected in parallel with the resistor R1, the S pole of the PMOS transistor is connected to a power supply, the G pole is connected to the IO port of the single chip, and the capacitor C1 and the resistor R1 are respectively connected in parallel with the S pole and the G pole of the PMOS transistor.
The boost conversion circuit comprises a resistor R3, a first NMOS (N-channel metal oxide semiconductor) tube and a diode D1, wherein one end of the resistor R3 is connected to the G pole of the first NMOS tube, the other end of the resistor R3 is connected to the S pole of the first NMOS tube, the G pole of the first NMOS tube is connected to the port of the singlechip timer, the S pole is grounded, and the D pole is connected to the D pole of a PMOS (P-channel metal oxide semiconductor) tube in the switching circuit; the cathode of the diode D1 is connected to the detection circuit, and the anode of the diode D1 is connected to the D pole of the first NMOS transistor in the boost converter circuit.
The energy storage element is a capacitor C2, the positive end of the energy storage element is connected to the negative electrode of a diode D1 in the boost conversion circuit and one end of a fuel gas electromagnetic valve, and the negative end of the energy storage element is grounded.
The detection circuit comprises a resistor R2 and a resistor R4; one end of the resistor R2 is connected to the cathode of the diode D1, the other end of the resistor R2 is connected to one end of the resistor R4 and the ADC port of the single chip microcomputer, and the other end of the resistor R4 is grounded.
The action switch comprises a second NMOS tube, a resistor R5 and a resistor R6; the D pole of the second NMOS tube is connected to the other end of the gas electromagnetic valve, the G pole is connected to the IO port of the single chip microcomputer, the S pole is connected to the ADC port of the single chip microcomputer, and the resistor R5 is connected with the G pole and the S pole of the second NMOS tube in parallel; one end of the resistor R6 is connected to the S pole of the second NMOS transistor, and the other end is grounded.
In a preferred embodiment, an inductor L1 is disposed between the power switch and the boost converter circuit, and one end of the inductor L1 is connected to the D pole of the PMOS transistor, and the other end is connected to the D pole of the first NMOS transistor.
In a preferred embodiment, the power source is a battery.
Based on the low-power consumption circuit of the battery-driven gas electromagnetic valve, a corresponding control method is provided:
1. the battery provides energy for driving the electromagnetic valve and keeps the normal work of the singlechip. The singlechip controls whether the battery supplies power to a rear circuit or not through the power supply switch, and keeps closing at ordinary times; the energy storage device is controlled by the action switch to discharge electricity to the electromagnetic valve or not, the electromagnetic valve is driven, and the electromagnetic valve is kept closed at ordinary times.
2. When the electromagnetic valve needs to act, the singlechip turns on the power supply switch, the battery starts to supply power to the circuit behind, and the voltage of the energy storage device rises to be lower than the voltage of the battery.
3. The single chip microcomputer provides a PWM signal for the booster circuit, the duty ratio and the frequency are set according to the type of the battery and the required boosting speed, the switch of the MOS tube is controlled, and the battery charges the energy storage device. The voltage on the energy storage device is gradually increased, the energy storage device uses a capacitor, the energy stored by the capacitor is determined by the capacity and the voltage of the capacitor, and after the capacity is determined, the energy stored by the capacitor and the voltage on the capacitor form an exponential relationship.
4. Because the action switch is closed, the energy storage device can only be charged and can not be discharged, and therefore the voltage rising speed is high. The speed of the voltage rise is determined by the average charging current, the capacitance value of the capacitor, and the boost voltage to be achieved.
5. The single chip microcomputer detects the voltage of the energy storage device through the detection circuit, and when the voltage reaches the target voltage, the power supply switch is turned off first, and then the PWM signal is stopped being sent to the booster circuit. At this time, energy sufficient to drive the solenoid valve has been stored in the energy storage device. Since the capacitor has no discharge path, energy will be retained in the capacitor and will only be consumed by the leakage of the device. Wherein the target voltage can be set according to requirements.
6. And opening the action switch to release energy in the energy storage device for driving the electromagnetic valve, wherein the sudden change of the voltage cannot influence a circuit system because the power supply switch in front is closed.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A low power consumption circuit of a battery-driven gas solenoid valve, comprising: the device comprises a power supply, a power supply switch, a boost conversion circuit, a detection circuit, an energy storage device, a single chip microcomputer, a gas electromagnetic valve and an action switch; the power supply is respectively supplied with power by a power supply switch and the singlechip, and the power supply switch is sequentially connected with a boost conversion circuit, a detection circuit, an energy storage device, a gas electromagnetic valve and an action switch; the pins of the single chip microcomputer are respectively connected with the power supply switch, the boost conversion circuit, the detection circuit, the energy storage device and the action switch.
2. The low power consumption circuit of the battery-driven gas solenoid valve as claimed in claim 1, wherein the power supply switch comprises a PMOS transistor, a resistor R1 and a capacitor C1, the capacitor C1 is connected in parallel with the resistor R1, the PMOS transistor S is connected to a power supply, the PMOS transistor G is connected to the IO port of the single chip microcomputer, and the capacitor C1 and the resistor R1 are respectively connected in parallel with the PMOS transistor S and G.
3. The low power consumption circuit of the battery-driven gas solenoid valve as claimed in claim 2, wherein the boost converting circuit comprises a resistor R3, a first NMOS transistor, and a diode D1, wherein one end of the resistor R3 is connected to the G pole of the first NMOS transistor, the other end is connected to the S pole of the first NMOS transistor, the G pole of the first NMOS transistor is connected to the timer port of the single chip microcomputer, the S pole is grounded, and the D pole is connected to the D pole of the PMOS transistor in the switching circuit; the cathode of the diode D1 is connected to the detection circuit, and the anode of the diode D1 is connected to the D pole of the first NMOS transistor in the boost converter circuit.
4. The low power consumption circuit of the battery-driven gas solenoid valve as claimed in claim 3, wherein the energy storage device is a capacitor C2, the positive terminal of the energy storage device is connected to the negative terminal of a diode D1 in the boost converter circuit and one terminal of the gas solenoid valve, and the negative terminal of the energy storage device is grounded.
5. The low power circuit of the battery-operated gas solenoid valve as claimed in claim 4, wherein the detection circuit comprises a resistor R2, a resistor R4; one end of the resistor R2 is connected to the cathode of the diode D1, the other end of the resistor R2 is connected to one end of the resistor R4 and the ADC port of the single chip microcomputer, and the other end of the resistor R4 is grounded.
6. The low power consumption circuit of the battery-driven gas solenoid valve as claimed in claim 5, wherein the action switch comprises a second NMOS transistor, a resistor R5, a resistor R6; the D pole of the second NMOS tube is connected to the other end of the gas electromagnetic valve, the G pole is connected to the IO port of the single chip microcomputer, the S pole is connected to the ADC port of the single chip microcomputer, and the resistor R5 is connected with the G pole and the S pole of the second NMOS tube in parallel; one end of the resistor R6 is connected to the S pole of the second NMOS transistor, and the other end is grounded.
7. The circuit of claim 6, further comprising an inductor L1 disposed between the power switch and the boost converter circuit, wherein one end of the inductor L1 is connected to the D pole of the PMOS transistor, and the other end is connected to the D pole of the first NMOS transistor.
8. The low power circuit for a battery-operated gas solenoid valve as recited in claim 1 wherein said power source is a battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730178.9U CN212784834U (en) | 2020-08-18 | 2020-08-18 | Low-power consumption circuit of battery-driven gas electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730178.9U CN212784834U (en) | 2020-08-18 | 2020-08-18 | Low-power consumption circuit of battery-driven gas electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212784834U true CN212784834U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021730178.9U Active CN212784834U (en) | 2020-08-18 | 2020-08-18 | Low-power consumption circuit of battery-driven gas electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212784834U (en) |
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2020
- 2020-08-18 CN CN202021730178.9U patent/CN212784834U/en active Active
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