CN215067781U - Automatic power-off control circuit for in-place switch of electromagnetic valve - Google Patents
Automatic power-off control circuit for in-place switch of electromagnetic valve Download PDFInfo
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- CN215067781U CN215067781U CN202120369952.6U CN202120369952U CN215067781U CN 215067781 U CN215067781 U CN 215067781U CN 202120369952 U CN202120369952 U CN 202120369952U CN 215067781 U CN215067781 U CN 215067781U
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Abstract
The application discloses solenoid valve switch automatic power-off control circuit that targets in place, including power supply circuit, intelligent signal processing MCU, solenoid valve switch detection interface, sampling resistor, drive circuit and the signal output interface that is used for connecting the solenoid valve that targets in place. The circuit controls the electromagnetic valve switch to be in place and automatically powered off through the intelligent signal processing MCU, collects the electromagnetic valve switch in place signals through the intelligent signal processing MCU in combination with the sampling resistor, can enable the electromagnetic valve to be in an intelligent working mode, controls the electromagnetic valve switch to be in place and automatically powered off, and can reduce energy consumption, thereby achieving the purpose of energy conservation. The technical problem that the power supply cannot be automatically cut off when the existing electromagnetic valve is switched in place, so that the electric quantity is lost is solved.
Description
Technical Field
The application relates to the technical field of electronic sanitary wares, in particular to an electromagnetic valve switch in-place automatic power-off control circuit.
Background
The pulse electromagnetic valve is a valve core commonly used by the current electronic sanitary ware. Normally, the pulse electromagnetic valve is opened or closed by a positive or negative pulse voltage output by a driving circuit, and the pulse width is normally 25 to 30mS according to the parameters provided by manufacturers. In practical use, the actually required pulse width for opening or closing the electromagnetic valve is related to driving voltage, water pressure, water quality, scale deposit inside the valve body and the like, most of the valves are actually opened or closed within 6ms, the power consumption in the remaining time is wasted, if the power supply can be automatically cut off when the valve is in place, a lot of electric quantity can be saved, and the practical use of the valve is of great significance for products powered by dry batteries, and the service life of the batteries can be effectively prolonged.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides an automatic power-off control circuit for an in-place solenoid valve switch, and the automatic power-off control circuit is used for solving the technical problem that power loss is caused because power supply cannot be automatically cut off when the solenoid valve switch is in place.
In view of the above, the present application provides an automatic power-off control circuit for an electromagnetic valve switch in place, which includes a power circuit, a driving circuit, a sampling resistor, and an intelligent signal processing MCU for controlling the driving circuit;
the power circuit is electrically connected with the driving circuit;
the sampling resistor is connected with the driving circuit in series;
the intelligent signal processing MCU is electrically connected with the driving circuit;
the intelligent signal processing MCU is provided with a solenoid valve switch in-place detection interface;
the solenoid valve switch in-place detection interface is electrically connected with the sampling resistor;
the driving circuit is provided with a signal output interface for connecting the electromagnetic valve.
Optionally, the drive circuit is an electric drive circuit for providing power to a switch of the solenoid valve.
Optionally, the power supply circuit is provided with a power output stage power supply pin Ec, and the power output stage power supply pin Ec is electrically connected to the sampling resistor.
Optionally, the resistance value of the sampling resistor is 0.5-1 Ω.
Optionally, a voltage regulation IC is provided in the power supply circuit.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides an in-place automatic power-off control circuit for a solenoid valve switch, which comprises a power circuit, a driving circuit, a sampling resistor and an intelligent signal processing MCU (microprogrammed control unit) for controlling the driving circuit; the power circuit is electrically connected with the driving circuit; the sampling resistor is connected in series with the driving circuit; the intelligent signal processing MCU is electrically connected with the driving circuit; the intelligent signal processing MCU is provided with a solenoid valve switch in-place detection interface; the solenoid valve switch in-place detection interface is electrically connected with the sampling resistor; the driving circuit is provided with a signal output interface for connecting the electromagnetic valve.
The application provides an electromagnetic valve switch in-place automatic power-off control circuit, a sampling resistor is connected in series in a power supply loop of a power supply circuit and a drive circuit, magnetic flux can obviously change when an electromagnetic valve is opened or closed in place, current in the power supply loop can suddenly change at the moment, the current change is reflected to the current change on the sampling resistor by connecting the sampling resistor in series in the power supply loop, as an electromagnetic valve switch in-place detection interface is electrically connected with the sampling resistor, the electromagnetic valve switch in-place detection interface detects the current change of the sampling resistor and feeds the current change back to an intelligent signal processing MCU, when the current on the sampling resistor suddenly changes, the intelligent signal processing MCU detects the current sudden change and controls the drive circuit to power off the electromagnetic valve after analysis, thus the sampling resistor is added and the drive circuit is controlled by detecting the signal of the intelligent signal processing MCU, make it stop to supply power for the solenoid valve when the solenoid valve opens to the right place or closes to the right place, reached the purpose of power saving, make the condition that detects the solenoid valve and open or close to the right place more accurate through intelligent signal processing MCU and sampling resistor, make the detection mode simplification simultaneously, solved current solenoid valve switch can not the automatic cutout power supply when targetting in place, cause the technical problem of electric quantity loss.
Drawings
FIG. 1 is a schematic diagram of a connection structure of an electromagnetic valve switch-in-place automatic power-off control circuit provided in an embodiment of the present application;
fig. 2 is a schematic working flow diagram of an electromagnetic valve switch in-place automatic power-off control circuit provided in an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Example 1
For easy understanding, please refer to fig. 1 to 2, an embodiment of the present application provides an electromagnetic valve switch in-place automatic power-off control circuit, which includes a power circuit, a driving circuit, a sampling resistor, and an intelligent signal processing MCU for controlling the driving circuit; the power circuit is electrically connected with the driving circuit; the sampling resistor is connected in series with the driving circuit; the intelligent signal processing MCU is electrically connected with the driving circuit; the intelligent signal processing MCU is provided with an electromagnetic valve switch in-place detection interface; the solenoid valve switch in-place detection interface is electrically connected with the sampling resistor; the driving circuit is provided with a signal output interface for connecting the electromagnetic valve.
It should be noted that, the driving circuit is electrically connected with the intelligent signal processing MCU through a command, and the intelligent signal processing MCU can output a valve opening signal or a valve closing signal to the driving circuit and control the opening or closing of the solenoid valve according to the command. In the embodiment, a sampling resistor is connected in series in a power supply loop of a power supply circuit and a drive circuit, magnetic flux changes obviously when an electromagnetic valve is opened or closed in place, current in the power supply circuit suddenly changes, then the current change in the circuit reflects the current change on the sampling resistor, because the electromagnetic valve switch in-place detection interface is electrically connected with the sampling resistor, the electromagnetic valve switch in-place detection interface detects the current change of the sampling resistor and feeds the current change back to an intelligent signal processing MCU, when the current on the sampling resistor suddenly changes, the intelligent signal processing MCU detects the current sudden change and sends an instruction after analysis processing to control the drive circuit to cut off the electromagnetic valve, so that the sampling resistor is increased, the drive circuit is controlled by the intelligent signal processing MCU to detect the signal to stop supplying power to the electromagnetic valve when the electromagnetic valve is opened or closed in place, the purpose of saving electricity is achieved.
The utility model provides a solenoid valve switch auto-power-off control circuit that targets in place, through establishing ties sampling resistor, the magnetic flux change in the twinkling of an eye that targets in place with solenoid valve opening or closing embodies the current change on the circuit, the current change in the sampling resistor is embodied again, through intelligent signal processing MCU and sampling resistor intellectual detection system solenoid valve switch condition of targeting in, make the detection more accurate, the detection mode is simplified, the auto-power-off of steerable solenoid valve simultaneously, can not the automatic cutout power supply when having solved current solenoid valve switch and targetting in place, cause the technical problem of electric quantity loss.
Example 2
As a further improvement to embodiment 1, as shown in fig. 1 to 2, when the intelligent signal processing MCU sends an opening or closing instruction to the driving circuit, a preset instruction width is output according to a parameter provided by a manufacturer of the solenoid valve, so that the valve can be normally opened or closed without receiving an in-place instruction.
It should be noted that the driving circuit is integrated on the driving chip, which facilitates the fabrication and installation of the driving circuit. When the driving chip starts to drive the electromagnetic valve to open or close, the intelligent signal processing MCU detects whether the electromagnetic valve is in place or not, and when the electromagnetic valve is detected to be in place or not, the intelligent signal processing MCU controls the driving chip to stop supplying power to the electromagnetic valve.
When the intelligent signal processing MCU does not detect the opening or closing arrival signal of the electromagnetic valve, the intelligent signal processing MCU can automatically judge whether the originally set opening or closing time of the electromagnetic valve is finished, when the opening or closing time of the electromagnetic valve is judged to be finished, the intelligent signal processing MCU controls the driving circuit to stop supplying power to the electromagnetic valve, and when the opening or closing time of the electromagnetic valve is not detected to be finished, the intelligent signal processing MCU continues to detect whether the electromagnetic valve is in place or not.
Example 3
As a further improvement to embodiment 1 or 2, as shown in fig. 1, the resistance of the sampling resistor is 0.5 to 1 Ω, and in this embodiment, the resistance of the sampling resistor is preferably 1 Ω, so as to avoid excessive power consumption due to excessive resistance, and meanwhile, a small resistance can make the sensed current change more obvious, thereby improving the accuracy of sampling detection; further, the driving circuit is an electric driving circuit for providing power for the switch of the electromagnetic valve, and can provide enough power for the electromagnetic valve to open or close; furthermore, the power supply circuit is provided with a power output stage power supply pin Ec, the power output stage power supply pin Ec is electrically connected with the sampling resistor, the power supply circuit provides power for the power output stage to the driving circuit through the power output stage power supply pin Ec and the sampling resistor, and meanwhile the driving circuit can output electromagnetic voltage to the electromagnetic valve.
Example 4
As a further improvement to embodiment 1, 2 or 3, as shown in fig. 1, a voltage stabilizing IC is disposed in the power circuit, so as to make the voltage output by the power circuit more stable, where the voltage stabilizing IC includes Vin, Out and GND terminals, Vin and GND form a voltage input loop, and Out and GND form a voltage output loop; in addition, the power circuit is also provided with a Vz end, and the Vz end is electrically connected with the driving circuit, so that stable voltage can be provided for the driving circuit.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (5)
1. An electromagnetic valve switch in-place automatic power-off control circuit is characterized by comprising a power circuit, a driving circuit, a sampling resistor and an intelligent signal processing MCU (microprogrammed control unit) for controlling the driving circuit;
the power circuit is electrically connected with the driving circuit;
the sampling resistor is connected with the driving circuit in series;
the intelligent signal processing MCU is electrically connected with the driving circuit;
the intelligent signal processing MCU is provided with a solenoid valve switch in-place detection interface;
the solenoid valve switch in-place detection interface is electrically connected with the sampling resistor;
the driving circuit is provided with a signal output interface for connecting the electromagnetic valve.
2. The solenoid switch in-place auto-power-off control circuit of claim 1, wherein the drive circuit is an electrical drive circuit for providing power to the switch of the solenoid.
3. The electromagnetic valve switch-in-place automatic power-off control circuit according to claim 1, wherein the power supply circuit is provided with a power output stage power supply pin Ec, and the power output stage power supply pin Ec is electrically connected with the sampling resistor.
4. The automatic power-off control circuit for the electromagnetic valve in-place switch is characterized in that the resistance value of the sampling resistor is 0.5-1 omega.
5. The automatic power-off control circuit for the switch-in-place of the electromagnetic valve according to claim 1, characterized in that a voltage-stabilizing IC is arranged in the power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120369952.6U CN215067781U (en) | 2021-02-10 | 2021-02-10 | Automatic power-off control circuit for in-place switch of electromagnetic valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120369952.6U CN215067781U (en) | 2021-02-10 | 2021-02-10 | Automatic power-off control circuit for in-place switch of electromagnetic valve |
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| CN215067781U true CN215067781U (en) | 2021-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115825728A (en) * | 2023-02-23 | 2023-03-21 | 微传智能科技（常州）有限公司 | Detection method for detecting whether valve element of electromagnetic valve is in place or not |
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2021
- 2021-02-10 CN CN202120369952.6U patent/CN215067781U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115825728A (en) * | 2023-02-23 | 2023-03-21 | 微传智能科技（常州）有限公司 | Detection method for detecting whether valve element of electromagnetic valve is in place or not |
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