CN222356029U - Automatic charging time control switch - Google Patents
Automatic charging time control switch Download PDFInfo
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- CN222356029U CN222356029U CN202421045605.8U CN202421045605U CN222356029U CN 222356029 U CN222356029 U CN 222356029U CN 202421045605 U CN202421045605 U CN 202421045605U CN 222356029 U CN222356029 U CN 222356029U
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Abstract
The utility model discloses an automatic charging type time control switch, which comprises an interface circuit, a rectifying and filtering circuit, a switching circuit, a relay control circuit, a battery charging circuit, a key circuit and a processor, wherein the output end of the interface circuit is connected with the input end of the rectifying and filtering circuit, the output end of the rectifying and filtering circuit is connected with the input end of the switching circuit, the control signal input end of the switching circuit is connected with the signal output interface of the processor, the output end of the switching circuit is respectively connected with the relay control circuit and the battery charging circuit, the battery charging circuit is connected with the power input interface of the processor, the relay control circuit is connected with the interface circuit, and the key circuit is connected with the signal input interface of the processor. According to the utility model, the rectification filter circuit is matched with the switch circuit, so that the internal battery can be charged while the processor is powered on under the condition of externally accessing alternating current, the battery is used for powering the processor when the external power is off, and meanwhile, the processor controls the on-off of the relay control circuit according to internal timing setting.
Description
Technical Field
The utility model relates to the technical field of electronic equipment, in particular to an automatic charging type time control switch.
Background
The time control switch is a power switch control device which is composed of a single-chip microprocessor as a core and an electronic circuit and the like, can control the opening and closing of household appliances in a cycle of days or weeks and in multiple time periods, can set 1-4 groups daily for 1 second to 168 hours, has a multi-path control function, is effective for a long time by one time setting, is suitable for the automatic control of various industrial appliances and household appliances, is safe, convenient, saves electricity and money, can output current up to 10-25A, can normally control 2200W to higher power appliances to work, can also be combined with a relay, a contactor and the like to control other various high-power equipment, and is internally provided with a No. 7 battery as an internal chip power supply.
Disclosure of utility model
The present utility model aims to solve the above problems and provide an automatic charging type time-controlled switch.
The utility model realizes the above purpose through the following technical scheme:
The automatic charging type time control switch comprises an interface circuit, a rectifying and filtering circuit, a switching circuit, a relay control circuit, a battery charging circuit, a key circuit and a processor, wherein the output end of the interface circuit is connected with the input end of the rectifying and filtering circuit, the output end of the rectifying and filtering circuit is connected with the input end of the switching circuit, the control signal input end of the switching circuit is connected with the signal output interface of the processor, the output end of the switching circuit is respectively connected with the relay control circuit and the battery charging circuit, the battery charging circuit is connected with the power input interface of the processor, the relay control circuit is connected with the interface circuit, and the key circuit is connected with the signal input interface of the processor.
Preferably, the interface circuit comprises a first interface, a second interface and a third interface, wherein the first interface is connected with an input end of the RC filter circuit, an output end of the RC filter circuit is connected with a first input end of the rectification filter circuit, the second interface is connected with a second input end of the rectification filter circuit through a resistor R1, the third interface is connected with the second interface in parallel, the fourth interface is connected with the relay control circuit, and the relay control circuit is connected with the first interface.
Preferably, the rectifying and filtering circuit comprises a rectifying bridge, a first output end of the rectifying bridge is connected with an anode of a capacitor C2, a second output end of the rectifying bridge is connected with a cathode of the capacitor C2, the cathode of the capacitor C2 is grounded, and the anode of the capacitor C2 is connected with an input end of the switching circuit.
Preferably, the switching circuit comprises a resistor R3, a resistor R4, a resistor R5, a resistor R7, a capacitor C3, a triode Q1, a triode Q2 and a triode Q3, wherein one end of the resistor R4 is connected with the positive electrode of the capacitor C2, the other end of the resistor R4 is connected with the collector of the triode Q2, the base of the triode Q2 is connected with one end of the resistor R5, the emitter of the triode Q2 is grounded, the other end of the resistor R5 is connected with one end of the capacitor C3 and is connected with a control signal input interface of the processor, the other end of the capacitor C3 is connected with the base of the triode Q2, the collector of the triode Q3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the positive electrode of the capacitor C2, the base of the triode Q3 is connected between the collector of the resistor R4 and the collector of the triode Q2, the emitter of the triode Q3 is connected with one end of the relay control circuit and one end of the resistor R7 respectively, the other end of the resistor R7 is connected with the collector of the triode Q1 and the collector of the triode Q1 is connected with the positive electrode of the resistor Q1.
Preferably, the relay control circuit comprises a relay, the normally open contact of the relay is respectively connected with the first interface and the fourth interface, one end of the relay coil is respectively connected with the emitter of the triode Q1, the output end of the diode D5 and the input end of the light emitting diode LED1, the output end of the light emitting diode LED1 is connected with one end of the resistor R6, the other end of the resistor R6 is respectively connected with the output end of the diode D6, the emitter of the triode Q3 and one end of the resistor R7, the other end of the relay coil is respectively connected with the input end of the diode D5, one end of the resistor R9, one end of the resistor R6 and the output end of the diode D6, the other end of the resistor R9 is connected with the input end of the light emitting diode LED2, the output end of the light emitting diode LED2 is grounded, and both ends of the diode D6 are connected with the capacitor C4 in parallel and the input end of the diode D6 is grounded.
Preferably, the battery charging circuit comprises a voltage stabilizing tube D7, a Schottky diode D8 and a battery, wherein one end of the voltage stabilizing tube D7 is respectively connected with one end of the resistor R7 and the input end of the Schottky diode D8, the other end of the voltage stabilizing tube D7 is grounded, the output end of the Schottky diode D8 is respectively connected with the positive electrode of the battery, the negative electrode of the battery is grounded, a junction point between the positive electrode of the battery and the Schottky diode D8 is connected with the input end of the diode D9, the output end of the diode D9 is connected with the input end of the diode D10, and the output end of the diode D10 is connected with a power input interface of the processor.
Preferably, the key circuit comprises a plurality of keys, and contacts of the plurality of keys are respectively and electrically connected with the signal input interface of the processor.
The utility model has the beneficial effects that:
When the AC power supply is powered off, the rechargeable battery supplies power to the equipment, and the diode is connected in series in the charging circuit, so that the battery only supplies power to the main control circuit of the equipment without reversely leaking power through the charging circuit by virtue of the unidirectional conductive characteristic of the diode.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a main circuit diagram in the present utility model.
FIG. 2 is a diagram of a peripheral circuit of a processor in accordance with the present utility model.
Fig. 3 is a circuit diagram of a key according to the present utility model.
Detailed Description
The technical scheme of the utility model is further explained below with reference to the accompanying drawings 1-3:
As shown in fig. 1-3, the automatic charging type time control switch comprises an interface circuit, a rectifying and filtering circuit, a switching circuit, a relay control circuit, a battery charging circuit, a key circuit and a processor, wherein the output end of the interface circuit is connected with the input end of the rectifying and filtering circuit, and the output end of the rectifying and filtering circuit is connected with the input end of the switching circuit. That is, the interface circuit is used for accessing external alternating current, the alternating current is processed by the rectifying and filtering circuit and then is output to the direct current, the direct current is input to the switching circuit, the switching circuit is used as a power supply circuit of the electrical equipment, after receiving a control signal of the processor, the switching circuit and the relay control circuit form a power supply loop to supply power to the load, the battery is charged by the charging circuit, and meanwhile, the switching circuit supplies power to the processor.
Specifically, as shown in fig. 1, the interface circuit includes a first interface, a second interface, a third interface, and a fourth interface, where the first interface is coupled to an input terminal of the RC filter circuit, and an output terminal of the RC filter circuit is coupled to a first input terminal of the rectifying filter circuit. That is, the first interface, the second interface, the third interface and the fourth interface are provided and can be used as input and output interfaces of the time control switch, wherein the first interface and the second interface are used as input interfaces of alternating current, the RC filter circuit comprises a resistor R2 and a capacitor C1, parallel input nodes of the resistor R2 and the capacitor C1 are connected with the output end of the first interface, parallel output nodes of the resistor R2 and the capacitor C1 are connected with the first input end of the rectification filter circuit, the alternating current is rectified into direct current through the rectification filter circuit after being filtered by the RC filter circuit, and the direct current can be directly supplied to the time control switch and simultaneously charges an internal battery.
The second interface is connected with a second input end of the rectifying and filtering circuit through a resistor R1. That is, the alternating current is input into the rectifying and filtering circuit through the protection resistor R1 and the RC filtering circuit through the first interface and the second interface.
The third interface is connected with the second interface in parallel, the fourth interface is connected with the relay control circuit, and the relay control circuit is connected with the first interface. That is, when the third interface is connected to the second interface in parallel and the fourth interface is connected to an interface of the relay control circuit and the other interface of the relay control circuit is connected to a junction point between the first interface and the RC filter circuit, the third interface and the fourth interface form a power supply loop when the relay control circuit is connected to the load, and supply ac power to the load.
Specifically, as shown in fig. 1, the rectifying and filtering circuit includes a rectifying bridge, a first output end of the rectifying bridge is connected with an anode of a capacitor C2, a second output end of the rectifying bridge is connected with a cathode of the capacitor C2, the cathode of the capacitor C2 is grounded, and an anode of the capacitor C2 is connected with an input end of the switching circuit. That is, the first output end of the rectifier bridge is connected with the positive electrode of the capacitor C2, the second output end of the rectifier bridge is connected with the negative electrode of the capacitor C2, the rectification and filtering treatment of the alternating current is realized, and a stable direct current is provided for the time control switch.
Specifically, as shown in fig. 1, a control signal input end of the switching circuit is connected with a signal output interface of the processor, and an output end of the switching circuit is respectively connected with the relay control circuit and the battery charging circuit. That is, the I/O signal output interface of the processor is connected to the control signal input end of the switching circuit, while the output end of the switching circuit is connected to the relay control circuit, the processor outputs a control signal to the switching circuit as a control signal for controlling the on-off of the relay, the switching circuit is powered on and off to the relay control circuit, the relay control circuit is powered on and off to control the on and off of the relay coil, thereby indirectly controlling the on and off of the load, and meanwhile, the switching circuit can continuously supply power to the time control switch under the condition that external alternating current is continuously supplied, and simultaneously charges the battery.
It should be noted that, as shown in fig. 2, the chip pin 11, i.e. the PB0 output pin T-CTR, is connected to the corresponding T-CTR input signal interface position in the switch circuit.
Specifically, as shown in fig. 1, the switching circuit includes a resistor R3, a resistor R4, a resistor R5, a resistor R7, a capacitor C3, a triode Q1, a triode Q2, and a triode Q3, wherein one end of the resistor R4 is connected to the positive electrode of the capacitor C2, the other end of the resistor R4 is connected to the collector of the triode Q2, the base of the triode Q2 is connected to one end of the resistor R5, the emitter of the triode Q2 is grounded, the other end of the resistor R5 is connected to one end of the capacitor C3 and is connected to the control signal input interface of the processor, the other end of the capacitor C3 is connected to the base of the triode Q2, the collector of the triode Q3 is connected to one end of the resistor R3, the other end of the resistor R3 is connected to the positive electrode of the capacitor C2, the base of the triode Q3 is connected between the collector of the resistor R4 and the collector of the triode Q2, the emitter of the triode Q3 is connected to the relay control circuit and the collector of the relay 7 is connected to the collector of the resistor Q1.
That is, when the processor outputs a current signal to the switching circuit through the T-CTR interface, the base voltage of the triode Q2 is greater than the emitter voltage thereof, the triode Q2 is grounded in a conductive manner, the base voltage of the triode Q3 is grounded as the collector voltage of the triode Q2, the base voltage of the triode Q3 is less than the conductive voltage, the triode Q3 is in an open state, meanwhile, the voltage at the base of the triode Q1 is the voltage of the resistor R3 which is greater than the emitter voltage of the Q1, the triode Q1 is conductive, the triode Q1, the triode Q2 and the relay control circuit form a power supply loop, the relay coil of the relay control circuit is powered on, the normally open contact of the relay is closed, and the power is supplied to the load through the alternating current power supply loop formed by the first interface and the fourth interface;
When the set time length is reached, the processor does not output a current signal to the switching circuit through the T-CTR interface, at the moment, the base voltage of the triode Q3 is larger than the conducting voltage of the triode Q3, the triode Q3 is conducted, at the moment, the base voltage of the triode Q1 is smaller than the conducting voltage of the triode Q1, the triode Q1 is not conducted, the triode Q3 and the triode Q1 are disconnected from a relay power supply loop, the relay coil is powered off, the relay coil is normally open, and the alternating current power supply loop is powered off to supply power to a load;
Under the condition that the external alternating current is continuously electrified, no matter whether the relay coil is electrified or not, the battery charging circuit can be continuously charged, namely different charging loops can be formed under different conducting states of the triode Q1 or the triode Q3, the chip can be powered up under the voltage stabilizing action of the voltage stabilizing tube until the battery voltage is full, and under the condition that the external alternating current is powered off, 2.5V direct current can be output to the chip through the battery.
Specifically, as shown in fig. 1, the relay control circuit includes a relay, a normally open contact of the relay is respectively connected to the first interface and the fourth interface, one end of a relay coil is respectively connected to an emitter of the triode Q1, an output end of the diode D5, and an input end of the light emitting diode LED1, that is, in a state of supplying power to a load, the light emitting diode LED1 and the light emitting diode LED2 are simultaneously turned on, and when power supply to the load is stopped, only the light emitting diode LED2 is turned on, which is helpful for personnel observation.
The output end of the light emitting diode LED1 is connected with one end of a resistor R6, the other end of the resistor R6 is connected with the output end of the diode D6, the emitter of the triode Q3 and one end of the resistor R7 respectively, the other end of the relay coil is connected with the input end of a diode D5, one end of a resistor R9, one end of the resistor R6 and the output end of the diode D6 respectively, the other end of the resistor R9 is connected with the input end of the light emitting diode LED2, the output end of the light emitting diode LED2 is grounded, two ends of the diode D6 are connected with a capacitor C4 in parallel, and the input end of the diode D6 is grounded. That is, when the load is supplied, the transistor Q1 and the transistor Q2 are turned on, the transistor Q1 and the relay coil form a path, and simultaneously, current flows through the diode D5 and the light emitting diode LED1 and the light emitting diode LED2, and at this time, the light emitting diode LED1 and the light emitting diode LED2 are turned on, and when the load is not supplied, the transistor Q2 is turned on, current flows to the battery charging circuit on the one hand and to the light emitting diode LED2 on the other hand, and the light emitting diode LED2 is turned on.
Specifically, as shown in fig. 1 and 2, the battery charging circuit is connected to a power input interface of the processor, the relay control circuit is connected to the interface circuit, that is, the battery charging circuit can output 2.5v direct current outwards and can be used as power supply of a chip, the output interface of the battery charging circuit is connected to a chip pin 5, namely VDD, through a first peripheral circuit, and is connected to the chip pin 9 and a pin 10, namely PA6 and PA7, through a second peripheral protection circuit, so as to supply power to the chip, and an interface of the relay control circuit is connected to a junction point between a first interface and an RC filter circuit in the interface circuit, so that a power supply loop is integrally formed with a fourth interface.
Specifically, as shown in fig. 1, the battery charging circuit includes a voltage regulator D7, a schottky diode D8, and a battery, wherein one end of the voltage regulator D7 is respectively connected to one end of the resistor R7 and an input end of the schottky diode D8, the other end of the voltage regulator D7 is grounded, an output end of the schottky diode D8 is respectively connected to an anode of the battery, a cathode of the battery is grounded, a junction point between the anode of the battery and the schottky diode D8 is connected to an input end of the diode D9, an output end of the diode D9 is connected to an input end of the diode D10, and an output end of the diode D10 is connected to a power input interface of the processor. That is, the current flowing out of the switching circuit flows through the schottky diode to charge the battery B1 on the one hand, and continues to flow through the diode D9 and the diode D10 to output 2.5V direct current to supply power to the chip on the other hand.
It should be noted that, as shown in fig. 2, the first peripheral circuit of the chip in this embodiment includes a capacitor C9, the capacitor C9 is connected in parallel to the chip pin 4 and the pin 5, meanwhile, the pin 4 is grounded, a capacitor C8 is also connected in parallel between the chip pin 3 and the pin 4, the second peripheral circuit includes two resistors R10 and R11 connected in parallel, a parallel connection node of the resistor R10 and the resistor R11 is connected to an output end of the battery charging circuit, and the other ends of the resistor R10 and the resistor R11 are connected to the chip pin 10 and the pin 9, respectively.
In particular, as shown in fig. 2 and 3, the key circuit is coupled to a signal input interface of the processor. That is, setting information, such as a set time period or the like, is transmitted to the processor through the key circuit.
The key circuit comprises a plurality of keys, and contacts of the keys are respectively and electrically connected with the signal input interface of the processor. In this embodiment, the key circuit includes SW1, SW2, SW3, SW4, SW5, SW6 and SW7, where two contacts of SW1 are respectively connected to the chip pin 12 and the pin 16, two contacts of SW2 are respectively connected to the pin 12 and the pin 15, two contacts of SW7 are respectively connected to the pin 12 and the pin 14, two contacts of SW3 are respectively connected to the pin 13 and the pin 17, two contacts of SW5 are respectively connected to the pin 13 and the pin 16, and two contacts of SW6 are respectively connected to the pin 13 and the pin 15, and two contacts of SW4 are respectively connected to the pin 13 and the pin 14.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (7)
1. The automatic charging type time control switch is characterized by comprising an interface circuit, a rectifying and filtering circuit, a switching circuit, a relay control circuit, a battery charging circuit, a key circuit and a processor, wherein the output end of the interface circuit is connected with the input end of the rectifying and filtering circuit, the output end of the rectifying and filtering circuit is connected with the input end of the switching circuit, the control signal input end of the switching circuit is connected with the signal output interface of the processor, the output end of the switching circuit is respectively connected with the relay control circuit and the battery charging circuit, the battery charging circuit is connected with the power input interface of the processor, the relay control circuit is connected with the interface circuit, and the key circuit is connected with the signal input interface of the processor.
2. The automatic charge type time control switch according to claim 1, wherein the interface circuit comprises a first interface, a second interface, a third interface and a fourth interface, the first interface is connected with an input end of an RC filter circuit, an output end of the RC filter circuit is connected with a first input end of the rectifying filter circuit, the second interface is connected with a second input end of the rectifying filter circuit through a resistor R1, the third interface is connected with the second interface in parallel, the fourth interface is connected with the relay control circuit, and the relay control circuit is connected with the first interface.
3. The automatic charge-type time-controlled switch according to claim 2, wherein the rectifying and filtering circuit comprises a rectifying bridge, a first output end of the rectifying bridge is connected with an anode of a capacitor C2, a second output end of the rectifying bridge is connected with a cathode of the capacitor C2, the cathode of the capacitor C2 is grounded, and an anode of the capacitor C2 is connected with an input end of the switching circuit.
4. The automatic charge time control switch of claim 3, wherein said switching circuit comprises a resistor R3, a resistor R4, a resistor R5, a resistor R7, a capacitor C3, a triode Q1, a triode Q2 and a triode Q3, one end of said resistor R4 is connected with the positive electrode of said capacitor C2, the other end of said resistor R4 is connected with the collector of said triode Q2, the base of said triode Q2 is connected with one end of said resistor R5, the emitter of said triode Q2 is grounded, the other end of said resistor R5 is connected with one end of said capacitor C3 and connected with the control signal input interface of said processor, the other end of said capacitor C3 is connected with the base of said triode Q2, the collector of said triode Q3 is connected with one end of said resistor R3, the other end of said resistor R3 is connected with the positive electrode of said capacitor C2, the base of said triode Q3 is connected between said resistor R4 and the collector of said triode Q2, the control circuit of said triode Q3 is connected with the collector of said triode Q7 and the other end of said triode Q1, the control circuit is connected with the collector of said triode Q1 and the collector of said triode Q1.
5. The automatic charge type time control switch according to claim 4, wherein the relay control circuit comprises a relay, normally open contacts of the relay are respectively connected with the first interface and the fourth interface, one end of the relay coil is respectively connected with an emitter of the triode Q1, an output end of the diode D5 and an input end of the light emitting diode LED1, the output end of the light emitting diode LED1 is connected with one end of a resistor R6, the other end of the resistor R6 is respectively connected with the output end of the diode D6, the emitter of the triode Q3 and one end of the R7, the other end of the relay coil is respectively connected with an input end of the diode D5, one end of the resistor R9, one end of the resistor R6 and the output end of the diode D6, the other end of the resistor R9 is connected with the input end of the light emitting diode LED2, the output end of the light emitting diode LED2 is grounded, two ends of the diode D6 are respectively connected with a capacitor C4 in parallel, and the input end of the diode D6 is grounded.
6. The automatic charge time-controlled switch of claim 4, wherein the battery charging circuit comprises a voltage regulator D7, a Schottky diode D8 and a battery, wherein one end of the voltage regulator D7 is respectively connected with one end of the resistor R7 and the input end of the Schottky diode D8, the other end of the voltage regulator D7 is grounded, the output end of the Schottky diode D8 is respectively connected with the positive electrode of the battery, the negative electrode of the battery is grounded, the junction point between the positive electrode of the battery and the Schottky diode D8 is connected with the input end of the diode D9, the output end of the diode D9 is connected with the input end of the diode D10, and the output end of the diode D10 is connected with the power input interface of the processor.
7. The automatic charge type time control switch as claimed in claim 1, wherein the key circuit comprises a plurality of keys, and contacts of the plurality of keys are respectively electrically connected with the signal input interface of the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421045605.8U CN222356029U (en) | 2024-05-14 | 2024-05-14 | Automatic charging time control switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421045605.8U CN222356029U (en) | 2024-05-14 | 2024-05-14 | Automatic charging time control switch |
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| CN222356029U true CN222356029U (en) | 2025-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202421045605.8U Active CN222356029U (en) | 2024-05-14 | 2024-05-14 | Automatic charging time control switch |
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| CN (1) | CN222356029U (en) |
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