CN215344039U - Wireless water leakage detection power supply control circuit - Google Patents
Wireless water leakage detection power supply control circuit Download PDFInfo
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- CN215344039U CN215344039U CN202121806518.6U CN202121806518U CN215344039U CN 215344039 U CN215344039 U CN 215344039U CN 202121806518 U CN202121806518 U CN 202121806518U CN 215344039 U CN215344039 U CN 215344039U
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Abstract
The utility model relates to a power supply control circuit. The wireless water leakage detection power supply control circuit has the characteristics of low power consumption and capability of alarming when the battery voltage is too low. The technical scheme is as follows: the utility model provides a wireless detection power control circuit that leaks, includes transmission signal indicator lamp circuit, its characterized in that: the circuit also comprises an MCU chip U2, a power chip circuit, a power voltage control circuit, a transmitting module circuit and a transmitting signal indicating lamp circuit which are respectively communicated with the MCU chip, wherein the power voltage control circuit is also respectively communicated with the power chip circuit and the transmitting module circuit.
Description
Technical Field
The utility model relates to a power supply control circuit, in particular to a wireless water leakage detection power supply control circuit.
Background
The water leakage detection control panel is an intelligent system which can quickly detect and give an alarm even if a trace amount of water leakage occurs. Once a water leakage accident occurs, irreparable losses such as important equipment failure, important data loss and the like are caused; meanwhile, emergency equipment faults can be caused in high-rise buildings, so that casualties are caused; if leakage accidents occur due to water leakage, the fire disaster of a building is developed, and the personal safety is possibly endangered. If water leakage accidents happen in a factory, production equipment is failed, and the delivery date is delayed, so that the production equipment is not trusted by customers. Therefore, the water leakage detection control panel can be widely applied to machine room water leakage monitoring, factory workshop water leakage monitoring, commercial and building water leakage monitoring, pipeline water leakage monitoring, places needing water leakage monitoring such as kitchens and toilets, and the like.
However, the existing water leakage detection board in the market has the problems of large static working current, too fast battery consumption, too low battery voltage, no alarm and the like, and needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the background technology and provide a wireless water leakage detection power supply control circuit which has the characteristics of low power consumption and capability of alarming when the battery voltage is too low.
The technical scheme provided by the utility model is as follows:
the utility model provides a wireless detection power control circuit that leaks, includes transmission signal indicator lamp circuit, its characterized in that: the circuit also comprises an MCU chip U2, a power chip circuit, a power voltage control circuit, a transmitting module circuit and a transmitting signal indicating lamp circuit which are respectively communicated with the MCU chip, wherein the power voltage control circuit is also respectively communicated with the power chip circuit and the transmitting module circuit.
The power supply voltage control circuit includes: the water leakage detection device comprises a 12V power supply, a first triode Q1 emitting electrode, a first triode Q1 base electrode, a second resistor R2, a second triode Q2 collecting electrode and a second triode Q2 emitting electrode which are sequentially connected in series and connected end to form a loop, at least one water leakage detection probe is connected to the emitting electrode end of a first triode Q1, and two ends of a first resistor R1 are respectively communicated with the first triode Q1 emitting electrode and the first triode Q1 base electrode;
a collector of the first triode Q1 is respectively connected with one end of a fifth resistor R5 and a voltage division circuit consisting of a third resistor R3 and a fourth resistor R4, and a voltage division point in the voltage division circuit is connected with an MCU chip to output a voltage detection AD value;
the base electrode of the second triode Q2 is grounded after passing through a voltage division circuit consisting of a second capacitor C2, a third capacitor C3 and a ninth resistor R9 and a tenth resistor R10 which are connected in parallel, and a voltage division point in the voltage division circuit is used for connecting a water leakage detection probe.
The power chip circuit includes: the power chip U1 with the input end electrically connected with the other end of the fifth resistor R5 and the output end outputting 5V voltage, the first capacitor C1 and the fourth capacitor C4 which are connected between the input end and the grounding end of the power chip U1, the first electrolytic capacitor E1, the 7 th capacitor C7 and the fifth capacitor C5 which are connected between the output end and the grounding end of the power chip U1.
The transmission module circuit includes:
a first branch: sequentially connecting an eleventh resistor R11 with a transmitting antenna TX1 of a first pin of a transmitting module U3, an eighth capacitor C8 connected between the transmitting antenna TX1 and a ground terminal in series, and a ninth capacitor C9 connected between the first pin of the transmitting module U3 and the ground terminal in series;
a second branch circuit: a fifteenth resistor R15 and a fourteenth resistor R14 which are connected in series between the positive electrode of the 12V power supply and the third pin of the transmitting module U3 after being connected in parallel, three capacitors which are connected in parallel between the positive electrode and the negative electrode of the 12V power supply and a sixteenth capacitor C16 which is connected in series between the third pin of the transmitting module U3 and the negative electrode of the 12V power supply E2, wherein the negative electrode of the 12V power supply E2 is connected with the ground terminal; the three capacitors are an eleventh capacitor C11, a sixth capacitor C6 and a second electrolytic capacitor E2 respectively;
a third branch circuit: and the thirteenth resistor R13 is connected between the fourth pin of the transmitting module U3 and the MCU chip in series.
In the transmitting signal indicating lamp circuit, the output end of the MCU chip is grounded after sequentially passing through the resistor R12 and the LED indicating lamp.
The working principle of the utility model is as follows:
1. when water leakage is not detected, the battery does not work, and electric energy is not consumed;
2. when a water leakage point is detected, water flow enables the three-point water leakage probes J1, J2 and J3 to be connected, so that the positive voltage of a 12V power supply (12V battery) charges capacitors C2 and C3 through a resistor R9, triodes Q1 and Q2 are in a transient saturation conduction state, and power is supplied to a power supply chip U1, an MCU chip U2 and a transmitting module. The MCU chip controls the transmitting module to send a water leakage signal to the main valve;
3. the battery voltage is judged according to the AD value of the detection voltage output by the resistors R3 and R4; if the voltage of the battery is too low, the MCU chip controls the transmitting module to send a voltage-too-low signal to the main valve;
4. when the capacitors C1 and C3 are fully charged, the triodes Q2 and Q1 are cut off. Thereby shutting down the operating power.
The utility model has the beneficial effects that:
1. when no water leakage is detected, the battery does not work, and the static working current is equal to 0; therefore, the electric energy consumption of the battery is very low, and the service life is obviously prolonged;
2. after water leakage is detected, the battery works for a short time and sends a water leakage signal to the main valve, and the buzzer of the main valve gives an alarm to remind a user;
3. when water leakage is detected, and the battery voltage is too low, the power generation battery voltage is too low, a signal is sent to the main valve, and the buzzer gives an alarm to remind a customer to replace the battery.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a power supply voltage control circuit according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a power chip circuit in an embodiment of the utility model.
Fig. 4 is a schematic structural diagram of a transmitting module circuit in the embodiment of the present invention.
Fig. 5 is a schematic diagram of a circuit for transmitting a signal indicating a lamp according to an embodiment of the present invention.
Detailed Description
The following further description is made with reference to the embodiments shown in the drawings.
The wireless water leakage detection power supply control circuit shown in the attached drawing comprises a transmitting signal indicating lamp circuit, an MCU chip U2, a power supply chip circuit, a power supply voltage control circuit, a transmitting module circuit and the transmitting signal indicating lamp circuit, wherein the power supply chip circuit, the power supply voltage control circuit and the transmitting module circuit are respectively connected with the MCU chip. The recommended model of the MCU chip U2 is: rassa R7FOC 905.
In the power supply voltage control circuit: a 12V power source CN1, a first triode Q1 emitter, a first triode Q1 base, a second resistor R2, a second triode Q2 collector and a second triode Q2 emitter are sequentially connected in series and connected end to form a loop, two water leakage detection probes J1 and J2 are connected in parallel and then are connected with a connecting line between the emitter of the first triode Q1 and the positive electrode of a 12V battery, and two ends of a first resistor R1 are respectively connected with the first triode Q1 emitter and the first triode Q1 base;
a collector of the first triode Q1 is respectively connected with one end of a fifth resistor R5 and a voltage division circuit consisting of a third resistor R3 and a fourth resistor R4, and a voltage division value between the third resistor R3 and the fourth resistor R4 is taken in the voltage division circuit and is input into the MCU chip as a voltage detection AD value;
the base of the second triode Q2 is first connected with the second capacitor C2 and the third capacitor C3 which are connected in series after being connected in parallel, and then connected with the voltage division circuit composed of the ninth resistor R9 and the tenth resistor R10, and then grounded, and the voltage division point in the voltage division circuit is used for connecting the third water leakage detection probe J3.
The working principle of the power supply voltage control circuit is as follows:
firstly, when no water leakage is detected (the water leakage probe does not encounter water leakage): the power supply does not work and does not consume electric energy.
Secondly, when water leakage is detected (the water leakage probe touches water leakage):
1. the three-point water leakage probes J1, J2 and J3 are switched on through water flow, so that the 12V power supply positive voltage charges capacitors C2 and C3 through a resistor R9, and triodes Q1 and Q2 are in a transient saturation conducting state, and 12V voltage is provided for a transmitting module circuit.
3. The 12V power supply supplies power to the power chip U1 through a resistor R5, and then 12V voltage is converted into 5V voltage through the power chip to be output to supply power to the MCU chip;
4. after the MCU chip and the transmitting module circuit are electrified and work, the transmitting module is controlled by the MCU chip to send a water leakage signal to a main valve (namely a water pipe valve which is provided with a buzzer); the main valve is closed after being started, so that the water flow is cut off.
Thirdly, sampling the AD value of the battery voltage through R3 and R4 resistors, and transmitting the AD value to an MCU chip to judge the voltage of the battery; if the battery voltage is too low, the MCU chip controls the transmitting module to send a battery voltage too low signal to the main valve.
And fourthly, when the capacitors C2 and C3 are fully charged, the triodes Q2 and Q1 are cut off. Thereby shutting down the operating power.
In the power chip circuit: the input end of the power chip U1 is electrically connected with the other end of the fifth resistor R5, and the output end outputs 5V voltage; the first capacitor C1 and the fourth capacitor C4 are connected in parallel between the input end of the power chip U1 (i.e. pin 1 of the power chip U1) and the ground end (i.e. pin 2 of the power chip U1), and the 7 th capacitor C7, the fifth capacitor C5 and the first electrolytic capacitor E1 (for filtering) are connected in parallel between the output end of the power chip U1 (i.e. pin 3 of the power chip U1; voltage of 5V) and the ground end.
The power chip circuit has the following functions: the 12V voltage is transmitted to the power chip U1 through the resistor R5 and then converted into 5V voltage to supply power to the MCU chip.
The recommended model of the power chip U1 is: 78L 05.
In the transmission module circuit:
the first branch includes: the transmitting antenna TX1 is sequentially connected with an eleventh resistor R11 and a first pin of a transmitting module U3, an eighth capacitor C8 is connected between the transmitting antenna TX1 and a ground terminal in series, and a ninth capacitor C9 is connected between the first pin of the transmitting module U3 and the ground terminal in series; the transmitting module U3 recommends the model: 433M-H34P-FS.
The second branch includes: a fifteenth resistor R15 and a fourteenth resistor R14 are connected in parallel and then connected in series between a 12V power supply pole and a third pin of the emission module U3, an eleventh capacitor C11, a sixth capacitor C6 and a second electrolytic capacitor E2 (used for filtering) are connected in parallel between the positive pole and the negative pole of the 12V power supply, and a sixteenth capacitor C16 is connected in series between the third pin of the emission module U3 and the negative pole of the 12V power supply; the negative pole of the 12V power supply is connected with the grounding end;
the third branch includes: and the thirteenth resistor R13 is connected between the fourth pin of the transmitting module U3 and the output end DAT of the MCU chip in series.
The function of the transmitting module circuit is as follows: after the battery is switched on, the 12V power supply enables the transmitting module circuit to work, and at the moment, the MCU chip sends data to the 4 pins of the transmitting module through the resistor R13 to control the transmitting module to send instructions.
The emitting signal indicating lamp circuit is grounded after the output end of the MCU chip sequentially passes through the resistor R12 and the LED indicating lamp. The working principle is as follows: when the MCU chip controls the transmitting module to transmit signals, the MCU chip transmits data to control the LED indicator lamp to flicker (indicating that signals are being transmitted) through the current limiting resistor R12.
Claims (5)
1. The utility model provides a wireless detection power control circuit that leaks, includes transmission signal indicator lamp circuit, its characterized in that: the circuit also comprises an MCU chip (U2), a power chip circuit, a power voltage control circuit, a transmitting module circuit and a transmitting signal indicator light circuit which are respectively communicated with the MCU chip, wherein the power voltage control circuit is also respectively communicated with the power chip circuit and the transmitting module circuit.
2. The wireless water leakage detection power control circuit according to claim 1, wherein: the power supply voltage control circuit includes: the water leakage detection device comprises a 12V power supply, a first triode (Q1) emitting electrode, a first triode base electrode, a second resistor R2, a second triode (Q2) collecting electrode and a second triode emitting electrode which are sequentially connected in series and connected end to form a loop, wherein at least one water leakage detection probe is connected to the emitting electrode end of the first triode, and two ends of a first resistor (R1) are respectively communicated with the first triode emitting electrode and the first triode base electrode;
a collector of the first triode is respectively connected with one end of a fifth resistor (R5) and a voltage division circuit consisting of a third resistor (R3) and a fourth resistor (R4), and a voltage division point in the voltage division circuit is connected with the MCU chip to output a voltage detection AD value;
the base electrode of the second triode is grounded after passing through a voltage division circuit consisting of a second capacitor (C2), a third capacitor (C3) and a ninth resistor (R9) and a tenth resistor (R10) which are connected in parallel in sequence, and a voltage division point in the voltage division circuit is used for connecting a water leakage detection probe.
3. The wireless water leakage detection power control circuit according to claim 2, wherein: the power chip circuit includes: the power supply chip (U1) with the input end electrically connected with the other end of the fifth resistor (R5) and the output end outputting 5V voltage, the first capacitor (C1) and the fourth capacitor (C4) which are connected between the input end of the power supply chip and the ground end in parallel, and the first electrolytic capacitor (E1), the 7 th capacitor (C7) and the fifth capacitor (C5) which are connected between the output end of the power supply chip and the ground end in parallel.
4. The wireless water leakage detection power control circuit according to claim 3, wherein: the transmission module circuit includes:
a first branch: the transmitting module comprises a transmitting antenna (TX1) which is connected with an eleventh resistor (R11) and a first pin of a transmitting module (U3) in sequence, an eighth capacitor (C8) which is connected between the transmitting antenna and a ground terminal in series and a ninth capacitor (C9) which is connected between the first pin of the transmitting module and the ground terminal in series;
a second branch circuit: after being connected in parallel, a fifteenth resistor (R15) and a fourteenth resistor (R14) which are connected in series between the positive pole of the 12V power supply and the third pin of the emission module, three capacitors which are connected in parallel between the positive pole and the negative pole of the 12V power supply and a sixteenth capacitor (C16) which is connected in series between the third pin of the emission module and the negative pole of the 12V power supply are connected, and the negative pole of the 12V power supply is connected with a grounding end; the three capacitors are an eleventh capacitor (C11), a sixth capacitor (C6) and a second electrolytic capacitor (E2), respectively;
a third branch circuit: and the thirteenth resistor (R13) is connected between the fourth pin of the transmitting module and the output end of the MCU chip in series.
5. The wireless water leakage detection power control circuit according to claim 4, wherein: in the transmitting signal indicating lamp circuit, the output end of the MCU chip is grounded after sequentially passing through the resistor (R12) and the LED indicating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121806518.6U CN215344039U (en) | 2021-08-04 | 2021-08-04 | Wireless water leakage detection power supply control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121806518.6U CN215344039U (en) | 2021-08-04 | 2021-08-04 | Wireless water leakage detection power supply control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215344039U true CN215344039U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121806518.6U Active CN215344039U (en) | 2021-08-04 | 2021-08-04 | Wireless water leakage detection power supply control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN215344039U (en) |
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2021
- 2021-08-04 CN CN202121806518.6U patent/CN215344039U/en active Active
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