CN113640885A - Water logging detection circuitry of ultralow stand-by power consumption - Google Patents
Water logging detection circuitry of ultralow stand-by power consumption Download PDFInfo
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- CN113640885A CN113640885A CN202110915432.5A CN202110915432A CN113640885A CN 113640885 A CN113640885 A CN 113640885A CN 202110915432 A CN202110915432 A CN 202110915432A CN 113640885 A CN113640885 A CN 113640885A
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- probe
- power consumption
- power supply
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention relates to the technical field of sensors, in particular to a water immersion detection circuit with ultralow standby power consumption, which comprises a sensor signal trigger processing module, wherein the sensor signal trigger processing module is connected to the positive end and the negative end of a power supply through a switch tube; the water leakage detection device is characterized by further comprising a first probe and a second probe, wherein the first probe and the second probe are used for detecting whether water leakage occurs or not and are not in contact with each other, the first probe is connected with the negative electrode of the power supply through a switch tube, and the second probe is connected with the positive electrode of the power supply. After the structure is adopted, the microprocessor, the related signal transmitting module, the alarm module and the like do not work before the water immersion detection circuit is not contacted with water leakage, and the low power consumption and the overlong standby time of the water immersion sensor are realized.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a water immersion detection circuit with ultralow standby power consumption.
Background
In daily life, the situations that tap water in a house leaks, or a heater in the north leaks, or a water pipe is frozen and leaks in winter and the like are met, so that not small economic losses can be brought to neighbors at home or under the building, inconvenience is brought to family life, and the water logging sensor can give an alarm in time to remind a user of treatment at once.
Although the water sensor can give an alarm in time and remind a user of immediately treating the water leakage problem and avoid serious economic loss caused by water leakage, the water sensor is basically used after finishing decoration and is not suitable for being connected with a power supply of the water sensor all the time, on one hand, the water sensor is inconvenient and on the other hand, the water sensor is not attractive, so that the water sensor is required to have longer standby time, such as more than one year, but the water sensor alarm in the current market basically adopts two probes and a single chip microcomputer to detect voltage changes on the two probes, so that the single chip microcomputer of the water sensor is required to be in a working state all the time, for example:
chinese patent CN 201710567465.9 discloses a water sensor and a method for detecting rust prevention by the water sensor, wherein the water sensor comprises: a first probe of the water sensor is connected with a first IO port in an MCU of the water sensor, a second probe of the water sensor is connected with a second IO port in the MCU, wherein the output states of the first IO port and the second IO port in the same period are complementary, the output states comprise high-level output and low-level output, and in adjacent periods, the output state of the first IO port and the output state of the second IO port alternate between the high-level output and the low-level output respectively; and in the water inlet detection process in the same period, the first probe and the second probe are conducted to form electron reflux.
The invention patent detects whether water leakage occurs by detecting the voltage change between the first probe and the second probe in a power consumption mode.
Disclosure of Invention
The invention aims to provide a water immersion detection circuit without electric loss and with ultralow power consumption.
In order to solve the technical problem, the water immersion detection circuit with ultralow standby power consumption comprises a sensor signal trigger processing module, wherein the sensor signal trigger processing module is connected to the positive end and the negative end of a power supply through a switch tube;
the water leakage detection device is characterized by further comprising a first probe and a second probe, wherein the first probe and the second probe are used for detecting whether water leakage occurs or not and are not in contact with each other, the first probe is connected with the negative electrode of the power supply through a switch tube, and the second probe is connected with the positive electrode of the power supply.
Preferably, the switching tube is an MOS tube or a triode.
Preferably, the switch tube is an MOS tube, a gate of the MOS tube is connected with the sensor signal triggering and processing module, a drain of the MOS tube is connected with a negative electrode of the power supply, and a source of the MOS tube is connected with the first probe.
Preferably, a voltage stabilizing and current stabilizing capacitor C1 is connected between the drain and the source of the MOS transistor.
Preferably, a filter resistor R1 is connected in parallel across the voltage stabilizing and current stabilizing capacitor C1.
Preferably, a current limiting resistor R2 is connected between the second probe and the positive electrode of the power supply.
Preferably, the sensor signal triggering and processing module comprises a microprocessor module, the microprocessor module is connected with the signal transmitting module through a signal matching/testing module, and the microprocessor module is connected with the alarm module.
Preferably, the power source is a 12V battery.
After the structure is adopted, the microprocessor, the related signal transmitting module, the alarm module and the like do not work before the water immersion detection circuit is not contacted with water leakage, and the low power consumption and the overlong standby time of the water immersion sensor are realized.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic circuit diagram of a water logging detection circuit with ultra-low standby power consumption according to the present invention.
In the figure: the device comprises a sensor signal trigger processing module 1, a first probe 2 and a second probe 3.
Detailed Description
As shown in fig. 1, the invention discloses a water immersion detection circuit with ultra-low standby power consumption, which comprises a sensor signal trigger processing module 1, wherein the sensor signal trigger processing module 1 is connected to the positive end and the negative end of a power supply through a switch tube, after the switch tube is conducted, the power supply supplies power to the sensor signal trigger processing module 1, and the sensor signal trigger processing module sends out a preset signal. The water leakage detection device further comprises a first probe 2 and a second probe 3 which are used for detecting whether water leakage exists and are not in contact with each other (the names of the first probe and the second probe are only used for conveniently explaining the two probes, and are not used for emphasizing the primary and secondary, position and sequence relation of the probes), and the second probe 3 and the first probe 2 are respectively connected to the two ends of the positive electrode and the negative electrode of the power supply; the sensor signal triggering and processing module 1 is connected between a power supply and the first probe 2 through a switch tube. The MOS tube (or a triode can be used) is a voltage control element (a voltage control element), and the MOS tube can be conducted only by adding the voltage required by the voltage control element; when the control voltage is removed, the switch is cut off, which is the switching action of the MOS tube; in this embodiment, the switching transistor is a MOS transistor. The sensor signal triggering and processing module 1 comprises a microprocessor module, the microprocessor module is connected with a signal transmitting module through a signal matching/testing module, and the microprocessor module is connected with an alarm module.
As shown in fig. 1, a gate of the MOS transistor is connected to the sensor signal trigger processing module 1, a drain of the MOS transistor is connected to a negative electrode of the power supply, and a source of the MOS transistor is connected to the first probe 2 (of course, the source of the MOS transistor may be connected to the negative electrode of the power supply, and the drain of the MOS transistor is connected to the first probe 2).
The working principle of the invention is as follows:
under the condition of no water leakage, a path cannot be formed between the first probe 2 and the second probe 3, although a potential difference (namely voltage) is formed between the first probe 2 and the second probe 3, the voltage cannot be formed between the D stage and the S stage of the MOS tube, the MOS tube is in an off state, the output GND stage and the D stage are in an open circuit state, and the microprocessor, a related signal transmitting module, an alarm module and the like do not work.
When water leakage occurs, a passage is formed between the first probe 2 and the second probe 3, voltage is formed between the D level and the S level of the MOS tube, the MOS tube is in an 'on' state, the passage state is formed between the output GND level and the D level, and the microprocessor, the related signal transmitting module and the alarm module start to work.
As shown in fig. 1, the two ends of the voltage stabilizing and current stabilizing capacitor C1 are connected in parallel with a filter resistor R1, and R1 is used for filtering, that is, filtering weak current signals, so as to prevent false alarm due to accidental factors. And a current limiting resistor R2 is connected between the second probe 3 and the anode of the power supply, and the resistor R2 is used for limiting current, so that the current is prevented from being too large, and the voltage between the first probe 2 and the second probe 3 can be adjusted.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many variations or modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (7)
1. A water logging detection circuit with ultra-low standby power consumption is characterized in that:
the sensor signal triggering and processing module (1) is connected to the positive end and the negative end of a power supply through a switch tube, after the switch tube is conducted, the power supply supplies power to the sensor signal triggering and processing module (1), and the sensor signal triggering and processing module (1) sends out a preset signal;
the water leakage detection device is characterized by further comprising a first probe (2) and a second probe (3), wherein the first probe (2) and the second probe are used for detecting water leakage and are not in contact with each other, the first probe (2) is connected with the negative electrode of a power supply through a switch tube, and the second probe (3) is connected with the positive electrode of the power supply.
2. The water logging detection circuit with ultra-low standby power consumption of claim 1, wherein: the switch tube is an MOS tube or a triode.
3. The water logging detection circuit with ultra-low standby power consumption of claim 2, wherein: the switch tube is an MOS tube, the grid electrode of the MOS tube is connected with the sensor signal triggering processing module (1), the drain electrode of the MOS tube is connected with the negative electrode of the power supply, and the source electrode of the MOS tube is connected with the first probe (2).
4. A water flood detection circuit with ultra-low standby power consumption as claimed in claim 3, wherein: and a voltage-stabilizing current-stabilizing capacitor C1 is connected between the drain electrode and the source electrode of the MOS tube.
5. The ultra-low standby power consumption water immersion detection circuit according to claim 4, wherein: and two ends of the voltage-stabilizing and current-stabilizing capacitor C1 are connected with a filter resistor R1 in parallel.
6. The water logging detection circuit with ultra-low standby power consumption of claim 1, wherein: and a current-limiting resistor R2 is connected between the second probe (3) and the anode of the power supply.
7. The water logging detection circuit with ultra-low standby power consumption of claim 1, wherein: the sensor signal triggering and processing module (1) comprises a microprocessor module, the microprocessor module is connected with a signal transmitting module through a signal matching/testing module, and the microprocessor module is connected with an alarm module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110915432.5A CN113640885A (en) | 2021-08-10 | 2021-08-10 | Water logging detection circuitry of ultralow stand-by power consumption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110915432.5A CN113640885A (en) | 2021-08-10 | 2021-08-10 | Water logging detection circuitry of ultralow stand-by power consumption |
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| CN113640885A true CN113640885A (en) | 2021-11-12 |
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| CN202110915432.5A Pending CN113640885A (en) | 2021-08-10 | 2021-08-10 | Water logging detection circuitry of ultralow stand-by power consumption |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205544400U (en) * | 2016-01-29 | 2016-08-31 | 惠州市蓝微新源技术有限公司 | Battery management system of low -power consumption standby |
| CN109035723A (en) * | 2018-07-24 | 2018-12-18 | 江门市凯骏环保科技有限公司 | A kind of leak overflow alarming system based on probe in detecting |
-
2021
- 2021-08-10 CN CN202110915432.5A patent/CN113640885A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205544400U (en) * | 2016-01-29 | 2016-08-31 | 惠州市蓝微新源技术有限公司 | Battery management system of low -power consumption standby |
| CN109035723A (en) * | 2018-07-24 | 2018-12-18 | 江门市凯骏环保科技有限公司 | A kind of leak overflow alarming system based on probe in detecting |
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Application publication date: 20211112 |
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