CN210426896U

CN210426896U - Alternating current water leakage detection device and alternating current socket

Info

Publication number: CN210426896U
Application number: CN201921806858.1U
Authority: CN
Inventors: 管彩灵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-04-28
Anticipated expiration: 2029-10-25

Abstract

The utility model provides an alternating current detection device and alternating current socket that leak. Alternating current detection device that leaks includes: the water leakage detection device comprises a single chip microcomputer, a first water leakage probe pin, a second water leakage probe pin, an isolation circuit and a leakage switch, wherein an interruption pin of the single chip microcomputer is connected with the first water leakage probe pin and the second water leakage probe pin through the isolation circuit, a first output pin of the single chip microcomputer is connected with a control end of the leakage switch through a switch tube and a silicon controlled rectifier in sequence, and the second water leakage probe pin is grounded through the isolation circuit. The utility model discloses an isolating circuit has played and has prevented that the high-voltage forceful electric power that takes in the aquatic from directly getting into the singlechip pin, damages the problem of singlechip, makes the utility model discloses both can be applied to uncharged detection of leaking, also can be applied to electrified in the detection of leaking.

Description

Alternating current water leakage detection device and alternating current socket

Technical Field

The utility model relates to a detection area leaks, in particular to alternating current detection device and alternating current socket that leak.

Background

The conventional leakage detecting device is damaged by high voltage under the action of high voltage strong electricity carried by water when the conventional leakage detecting device in the prior art directly detects the leakage.

SUMMERY OF THE UTILITY MODEL

The utility model provides an alternating current detection device and alternating current socket that leaks to solve at least one above-mentioned technical problem.

In order to solve the above problem, as an aspect of the present invention, there is provided an ac water leakage detection device, including: the water leakage detection device comprises a single chip microcomputer, a first water leakage probe pin, a second water leakage probe pin, an isolation circuit and a leakage switch, wherein an interruption pin of the single chip microcomputer is connected with the first water leakage probe pin and the second water leakage probe pin through the isolation circuit, a first output pin of the single chip microcomputer is connected with a control end of the leakage switch through a switch tube and a silicon controlled rectifier in sequence, and the second water leakage probe pin is grounded through the isolation circuit.

Preferably, the isolation circuit includes a first diode, a second diode, a first triode, a capacitor, and a first resistor, the interrupt pin is connected with the anode of the first diode, the cathode of the first diode is connected with the first water leakage probe pin, the cathode of the first diode is connected with the cathode of the second diode, the anode of the second diode is grounded through the first resistor, the second water leakage probe pin is connected with the anode of the second diode, the cathode of the first diode is connected with the base of the first triode through the capacitor, the collector of the first triode is connected with the interrupt pin, and the emitter of the first triode is grounded.

Preferably, the first output pin is connected with a control end of the switch tube, and an output end of the switch tube is connected with a control end of the thyristor.

Preferably, the alternating current water leakage detection device further comprises an alarm, and a second output pin of the single chip microcomputer is connected with the alarm.

Preferably, the alarm is a buzzer.

Preferably, a second output pin of the single chip microcomputer is connected with the alarm through a second triode.

Preferably, the cathode of the second diode is connected to the first water leakage probe pin through a second resistor, and the anode of the second diode is connected to the second water leakage probe pin through a third resistor.

The utility model also provides an AC socket, including the probe and the foretell AC detection device that leaks of leaking, the probe that leaks with the AC detection device that leaks's first probe pin, the second probe pin that leaks of leaking is connected.

In the technical scheme, the utility model discloses an isolation circuit has played and has prevented that the high-voltage forceful electric power that takes in the aquatic from directly getting into the singlechip pin, damages the problem of singlechip, makes the utility model discloses both can be applied to uncharged detection of leaking, also can be applied to among the electrified detection of leaking.

Drawings

Fig. 1 schematically shows a schematic diagram of a single chip module of the present invention;

FIG. 2 schematically illustrates a schematic diagram of a probe input module;

FIG. 3 schematically illustrates a schematic diagram of an alarm module;

fig. 4 schematically shows a schematic diagram of the leakage switch control module.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

The utility model discloses an aspect provides an alternating current detection device that leaks, include: the water leakage detection device comprises a single chip microcomputer U1, a first water leakage probe pin TZ1, a second water leakage probe pin TZ2, an isolation circuit and a leakage switch, wherein an interruption pin of the single chip microcomputer U1 is connected with the first water leakage probe pin TZ1 and a second water leakage probe pin TZ2 through the isolation circuit, a first output pin of the single chip microcomputer U1 is connected with a control end of the leakage switch sequentially through a switch tube AD1 and a silicon controlled rectifier Q4, and the second water leakage probe pin TZ2 is grounded through the isolation circuit. In fig. 1 to 4, the same circuit networks are denoted by the same network reference numerals, which belongs to the common general knowledge in the field of circuit schematic diagram drawing, and indicate that the networks are connected with each other, and the description thereof is omitted. The specific type of the singlechip U1 is not limited, and any conventional singlechip in the field can be adopted.

When the water leakage protection device works, the probe is connected with the first water leakage probe pin TZ1 and the second water leakage probe pin TZ2, and when water leaks, a short circuit is formed, so that the grounding of the interruption pin of the single chip microcomputer U1 is changed into a low level, the single chip microcomputer is triggered to output the low level to the first output pin, the electric leakage switch is powered off, an alternating current circuit externally connected to the electric leakage switch is disconnected, and the protection effect is achieved. The zero line IN _ N _220 is connected with one end of the leakage switch, and the live line OUT _ L _220 is connected with the other end of the leakage switch.

Preferably, the isolation circuit includes a first diode D1, a second diode D2, a first triode Q7, a capacitor C10, and a first resistor R20, the interruption pin is connected to the anode of the first diode D1, the cathode of the first diode D1 is connected to the first water leakage probe pin TZ1, the cathode of the first diode D1 is connected to the cathode of the second diode D2, the anode of the second diode D2 is grounded via the first resistor R20, the second water leakage probe pin TZ2 is connected to the anode of the second diode D2, the cathode of the first diode D1 is connected to the base of the first triode Q7 via the capacitor C10, the collector of the first triode Q7 is connected to the interruption pin, and the emitter of the first triode Q7 is grounded. When any one or two of the first water leakage probe pin TZ1 and the second water leakage probe pin TZ2 detects water with alternating current, the alternating current in the water acts on the base electrode of the first triode Q7 through the capacitor C10, so that the first triode Q7 is conducted, a low level is generated at the interrupt pin to trigger the single chip microcomputer to interrupt, and a corresponding circuit is disconnected, so that a protection effect is achieved. Meanwhile, the first diode D1 can avoid the problem that the high voltage generated by water flows to the interrupt pin of the singlechip, so that the digital circuit is damaged by the high voltage. The second diode D2 itself generates a voltage drop to avoid current backflow that could damage the single chip.

Preferably, a cathode of the second diode D2 is connected to the first water leakage probe pin TZ1 through a second resistor R22, and an anode of the second diode D2 is connected to the second water leakage probe pin TZ2 through a third resistor R21.

Preferably, the first output pin is connected to a control terminal of the switching tube AD1, and an output terminal of the switching tube AD1 is connected to a control terminal of the thyristor Q4. When the DETA signal is low level, the leakage switch is controlled to be switched off.

Preferably, the alternating current water leakage detection device further comprises an alarm BZ, and a second output pin of the single chip microcomputer U1 is connected with the alarm BZ. Preferably, the alarm BZ is a buzzer. When the water leakage short circuit occurs, the second output pin of the singlechip U1 is triggered to output high level, so that the buzzer gives an alarm.

Preferably, a second output pin of the single chip microcomputer U1 is connected to the alarm BZ through a second triode Q2.

The utility model also provides an AC socket, including the probe and the foretell alternating current detection device that leaks of leaking, the probe that leaks with alternating current detection device's the first probe pin TZ1, the second probe pin TZ2 that leaks of leaking connects.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An alternating current water leakage detection device, comprising: singlechip (U1), first probe pin that leaks (TZ1), second probe pin that leaks (TZ2), isolating circuit and leakage switch, the interrupt pin of singlechip (U1) passes through isolating circuit with first probe pin that leaks (TZ1), second probe pin that leaks (TZ2) are connected, the first output pin of singlechip (U1) loops through switch tube (AD1), silicon controlled rectifier (Q4) with leakage switch's control end is connected, second probe pin that leaks (TZ2) pass through isolating circuit ground connection.

2. The ac water leakage detecting device according to claim 1, wherein said isolating circuit comprises a first diode (D1), a second diode (D2), a first triode (Q7), a capacitor (C10), and a first resistor (R20), said interrupt pin is connected to the anode of said first diode (D1), the cathode of said first diode (D1) is connected to said first water leakage probe pin (TZ1), the cathode of said first diode (D1) is connected to the cathode of said second diode (D2), the anode of said second diode (D2) is grounded via said first resistor (R20), said second water leakage probe pin (TZ2) is connected to the anode of said second diode (D2), the cathode of said first diode (D1) is connected to the base of said first triode (Q7) via said capacitor (C10), the collector of the first transistor (Q7) is connected to the interrupt pin and the emitter of the first transistor (Q7) is grounded.

3. The ac water leakage detection device according to claim 2, wherein said first output pin is connected to a control terminal of said switching tube (AD1), and an output terminal of said switching tube (AD1) is connected to a control terminal of said thyristor (Q4).

4. The alternating current water leakage detection device according to claim 1, further comprising an alarm (BZ), wherein a second output pin of the single chip microcomputer (U1) is connected with the alarm (BZ).

5. An alternating current water leakage detection device according to claim 4, characterized in that said alarm (BZ) is a buzzer.

6. The alternating current water leakage detection device according to claim 4, wherein a second output pin of the single chip microcomputer (U1) is connected with the alarm (BZ) through a second triode (Q2).

7. An ac water leakage detecting device according to claim 2, wherein the cathode of said second diode (D2) is connected to said first water leakage probe pin (TZ1) through a second resistor (R22), and the anode of said second diode (D2) is connected to said second water leakage probe pin (TZ2) through a third resistor (R21).

8. An AC outlet, comprising a water leakage probe and the AC water leakage detecting device as claimed in any one of claims 1 to 7, wherein the water leakage probe is connected to a first water leakage probe pin (TZ1) and a second water leakage probe pin (TZ2) of the AC water leakage detecting device.