CN203909983U - Ultra-miniature water leakage sensor - Google Patents
Ultra-miniature water leakage sensor Download PDFInfo
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- CN203909983U CN203909983U CN201420232460.2U CN201420232460U CN203909983U CN 203909983 U CN203909983 U CN 203909983U CN 201420232460 U CN201420232460 U CN 201420232460U CN 203909983 U CN203909983 U CN 203909983U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 147
- 239000003990 capacitor Substances 0.000 claims description 102
- 239000000523 sample Substances 0.000 claims description 7
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- 238000012856 packing Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
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- 229920006351 engineering plastic Polymers 0.000 description 1
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- 239000003292 glue Substances 0.000 description 1
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Abstract
The utility model discloses an ultra-miniature water leakage sensor, comprising a main circuit and an auxiliary circuit connected in sequence. The main circuit comprises an ultra-miniature water leakage sensing module U1 whose model is LM311, and a first contact connector P1 and a second contact connector P2 respectively connected with the ultra-miniature water leakage sensing module U1. The ultra-miniature water leakage sensing module U1 is connected with the auxiliary circuit. The ultra-miniature water leakage sensor can overcome defects in the prior art of short service life, high cost, and low reliability, and is advantaged by long service life, low cost, and high reliability.
Description
Technical field
The utility model relates to communication technical field, particularly, relates to a kind of superminiature water leak sensor.
Background technology
The composition module package of wireless senser is in a shell, in the time of work, it will provide power supply by battery or vibrating electricity generator, form wireless sensor network node, by the Node that is integrated with sensor, data processing unit and communication module of stochastic distribution, form network by the mode of self-organization.It can collecting device digital signal be transferred to the radio network gateway of Surveillance center by wireless sensor network, directly send into computing machine, carry out analyzing and processing.If needed, the whole time history signal that wireless senser also can real-time Transmission gathers.The information wireless such as Surveillance center also can control by gateway handle, parameter arranges are transferred to node.Data conditioning acquisition processing module through amplifying, after the modulate circuits such as filtering, is delivered to analog to digital converter the feeble signal of sensor output, changes digital signal into, delivers to primary processor and carries out digital signal processing, calculates effective value, the shift value etc. of sensor.
Realizing in process of the present utility model, inventor finds at least to exist in prior art the defect such as serviceable life is short, cost is high and reliability is low.
Utility model content
The purpose of this utility model is, for the problems referred to above, proposes a kind of superminiature water leak sensor, to realize long service life, cost is low and reliability is high advantage.
For achieving the above object, the technical solution adopted in the utility model is: a kind of superminiature water leak sensor, comprises the main circuit and the auxiliary circuit that connect successively; Described main circuit comprises that model is the superminiature water leakage sensing module U1 of LM311, and reveals with described superminiature water the first contact pin connector P1 and the second contact pin connector P2 that sensing module U1 is connected respectively; Described superminiature water is revealed sensing module U1 and is connected with auxiliary circuit.
Further, described superminiature water is revealed sensing module U1, comprises rectifier bridge, resistance R 1, R3, R4, R5, R6, R8, R9, R10, R11, R12, R13 and R14, triode T1, T2 and T3, capacitor C 1, C2, C3, C4 and C5, PIC12 chip and LM311 chip; Wherein:
The input termination AC power of described rectifier bridge, the output terminal of rectifier bridge is connected with the collector of triode T1, is connected and after capacitor C 3 and resistance R 6, is connected with the base stage of triode T3 successively after resistance R 5 with the collector of triode T2 after resistance R 1;
The emitter of described triode T1 is unsettled, the base earth of triode T1, the base stage of triode T1, also ground connection after capacitor C 1 and capacitor C 2 respectively, be connected with the 8th link of PIC12 chip, after resistance R 4, be connected with the emitter of triode T2, after resistance R 8, be connected with the emitter of triode T3, after capacitor C 4, be connected with the collector of triode T3 and the 5th link of PIC12 chip respectively, after resistance R 9, be connected with the collector of triode T3, be connected with the 1st link of PIC12 chip and the 4th link of PIC12 chip, after resistance R 11, be connected with the 6th link of PIC12 chip and the 7th link of LM311 chip respectively, respectively with the 5th link of LM311 chip, the 6th link of LM311 chip and the 8th link of LM311 chip are connected, after resistance R 10, be connected with the 2nd link of LM311 chip, and be connected with the 3rd link of LM311 chip after resistance R 13, resistance R 12 and capacitor C 5 are connected in parallel between the 2nd link of LM311 chip and the 3rd link of LM311 chip, resistance R 14 be connected to LM311 chip the 3rd link and ground between, the common port of resistance R 10 and resistance R 13 is as the first probe, and the common port of resistance R 13 and resistance R 14 is as the second probe, the 1st link of LM311 chip and the 4th link ground connection of LM311 chip, the base stage of described triode T2 is connected with the 7th link of PIC12 chip after resistance R 3.
Further, described main circuit, also comprise that one end and superminiature water are revealed the 1st link of sensing module U1 and the second link of superminiature water leakage sensing module U1 is connected, the first capacitor C 21 of other end ground connection, one end reveals the 28th link of sensing module U1 with superminiature water and the 29th link of superminiature water leakage sensing module U1 is connected, the second capacitor C 291 of other end ground connection, one end is connected with the 30th link that superminiature water is revealed sensing module U1, the 3rd capacitor C 301 of other end ground connection, one end is connected with the 31st link that superminiature water is revealed sensing module U1, the 4th capacitor C 311 of other end ground connection, and be connected to superminiature water and reveal the first resistance R 311 between the 31st link and the second contact pin connector P2 of sensing module U1.
Further, described auxiliary circuit, comprise that one end reveals the 28th link of sensing module U1 and superminiature water and reveal respectively the 4th capacitor C 191, the 5th capacitor C 221, the 6th capacitor C 251, the 7th capacitor C 261 and the 8th capacitor C 1 that the 29th link is connected, the other end is distinguished ground connection of sensing module U1 with superminiature water, and one end and the 8th capacitor C 1 one end is remotely connected, the other end is connected with direct supply VDD the first inductance L 1;
Described the 5th capacitor C 221 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 22nd link of superminiature water leakage sensing module U1; The 6th capacitor C 251 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 25th link of superminiature water leakage sensing module U1; The 7th capacitor C 261 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 26th link of superminiature water leakage sensing module U1.
Further, described auxiliary circuit, also comprise that being connected to superminiature water in turn reveals the 9th capacitor C 231 between the 23rd link and the ground of sensing module U1, the second inductance L 232, the 3rd inductance L 233, the tenth capacitor C 235 and toggle switch P3, be connected to the 4th inductance L 241 between the common port of the 9th capacitor C 231 and the second inductance L 232 and the 24th link of superminiature water leakage sensing module U1, and, one end reveals the 24th link of sensing module U1 with superminiature water and the common port of the 4th inductance L 241 is connected, the 11 capacitor C 241 of other end ground connection, one end is connected with the common port of the second inductance L 232 and the 3rd inductance L 233, the 12 capacitor C 232 of other end ground connection, one end is connected with the common port of the 3rd inductance L 233 and the tenth capacitor C 235, the 13 capacitor C 233 of other end ground connection.
Further, described auxiliary circuit, also comprise that the 17th end that sensing module U1 is revealed with superminiature water in one end is connected, the 14 capacitor C 171 of other end ground connection, one end is connected with the 18th end that superminiature water is revealed sensing module U1, the 15 capacitor C 181 of other end ground connection, one end is connected with the 21st end that superminiature water is revealed sensing module U1, the 16 capacitor C 211 of other end ground connection, one end is connected with the 20th end that superminiature water is revealed sensing module U1, the 17 capacitor C 201 of other end ground connection, and, one end is connected with the 27th end that superminiature water is revealed sensing module U1, the second resistance R 271 of other end ground connection.
Further, described auxiliary circuit, also comprise the first crystal oscillator X1 between the common port of the 20th end that is connected to the 17 capacitor C 201 and superminiature water leakage sensing module U1 and the common port of the 21st end of the 16 capacitor C 211 and superminiature water leakage sensing module U1, and, be connected to the 14 capacitor C 171 and superminiature water and reveal the second crystal oscillator X2 between the common port of the 17th end of sensing module U1 and the common port of the 18th end of the 15 capacitor C 181 and superminiature water leakage sensing module U1.
The superminiature water leak sensor of the each embodiment of the utility model, owing to comprising the main circuit and the auxiliary circuit that connect successively; Main circuit comprises that model is the superminiature water leakage sensing module U1 of LM311, and reveals with superminiature water the first contact pin connector P1 and the second contact pin connector P2 that sensing module U1 is connected respectively; Superminiature water is revealed sensing module U1 and is connected with auxiliary circuit; Existence that can perception water, with the potential property loss of avoiding flood or leakage to cause; Thereby can overcome the defect that in prior art, serviceable life is short, cost is high and reliability is low, to realize long service life, cost is low and reliability is high advantage.
Other features and advantages of the utility model will be set forth in the following description, and, partly from instructions, become apparent, or understand by implementing the utility model.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model with embodiment mono-of the present utility model, does not form restriction of the present utility model.In the accompanying drawings:
In Fig. 1, (a) is the structural representation of main circuit in the utility model superminiature water leak sensor, (b) is the pin figure of U1;
Fig. 2 is the structural representation of auxiliary circuit in the utility model superminiature water leak sensor.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
According to the utility model embodiment, as depicted in figs. 1 and 2, provide a kind of superminiature water leak sensor, the time interval that can specify by measuring cell voltage, send to rear end with wireless mode, the voltage readings of Real-Time Monitoring battery system, thus determine cell health state.
The superminiature water leak sensor of the present embodiment, comprises the main circuit and the auxiliary circuit that connect successively.
Wherein, above-mentioned main circuit comprises that model is the superminiature water leakage sensing module U1 of LM311, and reveals with superminiature water the first contact pin connector P1 and the second contact pin connector P2 that sensing module U1 is connected respectively; Superminiature water is revealed sensing module U1 and is connected with auxiliary circuit.Main circuit, also comprise that one end and superminiature water are revealed the 1st link of sensing module U1 and the second link of superminiature water leakage sensing module U1 is connected, the first capacitor C 21 of other end ground connection, one end reveals the 28th link of sensing module U1 with superminiature water and the 29th link of superminiature water leakage sensing module U1 is connected, the second capacitor C 291 of other end ground connection, one end is connected with the 30th link that superminiature water is revealed sensing module U1, the 3rd capacitor C 301 of other end ground connection, one end is connected with the 31st link that superminiature water is revealed sensing module U1, the 4th capacitor C 311 of other end ground connection, and be connected to superminiature water and reveal the first resistance R 311 between the 31st link and the second contact pin connector P2 of sensing module U1.
Particularly, superminiature water is revealed sensing module U1, comprises rectifier bridge, resistance R 1, R3, R4, R5, R6, R8, R9, R10, R11, R12, R13 and R14, triode T1, T2 and T3, capacitor C 1, C2, C3, C4 and C5, PIC12 chip and LM311 chip, wherein: the input termination AC power of rectifier bridge, the output terminal of rectifier bridge is connected with the collector of triode T1, is connected and after capacitor C 3 and resistance R 6, is connected with the base stage of triode T3 successively after resistance R 5 with the collector of triode T2 after resistance R 1, the emitter of triode T1 is unsettled, the base earth of triode T1, the base stage of triode T1, also ground connection after capacitor C 1 and capacitor C 2 respectively, be connected with the 8th link of PIC12 chip, after resistance R 4, be connected with the emitter of triode T2, after resistance R 8, be connected with the emitter of triode T3, after capacitor C 4, be connected with the collector of triode T3 and the 5th link of PIC12 chip respectively, after resistance R 9, be connected with the collector of triode T3, be connected with the 1st link of PIC12 chip and the 4th link of PIC12 chip, after resistance R 11, be connected with the 6th link of PIC12 chip and the 7th link of LM311 chip respectively, respectively with the 5th link of LM311 chip, the 6th link of LM311 chip and the 8th link of LM311 chip are connected, after resistance R 10, be connected with the 2nd link of LM311 chip, and be connected with the 3rd link of LM311 chip after resistance R 13, resistance R 12 and capacitor C 5 are connected in parallel between the 2nd link of LM311 chip and the 3rd link of LM311 chip, resistance R 14 be connected to LM311 chip the 3rd link and ground between, the common port of resistance R 10 and resistance R 13 is as the first probe, and the common port of resistance R 13 and resistance R 14 is as the second probe, the 1st link of LM311 chip and the 4th link ground connection of LM311 chip, the base stage of triode T2 is connected with the 7th link of PIC12 chip after resistance R 3.
Above-mentioned auxiliary circuit, comprise that one end reveals the 28th link of sensing module U1 and superminiature water and reveal respectively the 4th capacitor C 191, the 5th capacitor C 221, the 6th capacitor C 251, the 7th capacitor C 261 and the 8th capacitor C 1 that the 29th link is connected, the other end is distinguished ground connection of sensing module U1 with superminiature water, and one end and the 8th capacitor C 1 one end is remotely connected, the other end is connected with direct supply VDD the first inductance L 1; The 5th capacitor C 221 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 22nd link of superminiature water leakage sensing module U1; The 6th capacitor C 251 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 25th link of superminiature water leakage sensing module U1; The 7th capacitor C 261 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 26th link of superminiature water leakage sensing module U1.Auxiliary circuit, also comprise that being connected to superminiature water in turn reveals the 9th capacitor C 231 between the 23rd link and the ground of sensing module U1, the second inductance L 232, the 3rd inductance L 233, the tenth capacitor C 235 and toggle switch P3, be connected to the 4th inductance L 241 between the common port of the 9th capacitor C 231 and the second inductance L 232 and the 24th link of superminiature water leakage sensing module U1, and, one end reveals the 24th link of sensing module U1 with superminiature water and the common port of the 4th inductance L 241 is connected, the 11 capacitor C 241 of other end ground connection, one end is connected with the common port of the second inductance L 232 and the 3rd inductance L 233, the 12 capacitor C 232 of other end ground connection, one end is connected with the common port of the 3rd inductance L 233 and the tenth capacitor C 235, the 13 capacitor C 233 of other end ground connection.Auxiliary circuit, also comprise that the 17th end that sensing module U1 is revealed with superminiature water in one end is connected, the 14 capacitor C 171 of other end ground connection, one end is connected with the 18th end that superminiature water is revealed sensing module U1, the 15 capacitor C 181 of other end ground connection, one end is connected with the 21st end that superminiature water is revealed sensing module U1, the 16 capacitor C 211 of other end ground connection, one end is connected with the 20th end that superminiature water is revealed sensing module U1, the 17 capacitor C 201 of other end ground connection, and, one end is connected with the 27th end that superminiature water is revealed sensing module U1, the second resistance R 271 of other end ground connection.Auxiliary circuit, also comprise the first crystal oscillator X1 between the common port of the 20th end that is connected to the 17 capacitor C 201 and superminiature water leakage sensing module U1 and the common port of the 21st end of the 16 capacitor C 211 and superminiature water leakage sensing module U1, and, be connected to the 14 capacitor C 171 and superminiature water and reveal the second crystal oscillator X2 between the common port of the 17th end of sensing module U1 and the common port of the 18th end of the 15 capacitor C 181 and superminiature water leakage sensing module U1.
For example, can the sensor taking model as LMS-9-WS-W1-LD be example, the superminiature water leak sensor of above-described embodiment is specifically described.
The superminiature water leak sensor of above-described embodiment, existence that can perception water, with the potential property loss of avoiding flood or leakage to cause.This superminiature water leak sensor can be placed on any may soak or pipeline reveal place, for detection of fault.This superminiature water leak sensor also can be used for detecting the degree of depth of water, whether allows you know a water container ware is empty.
The purposes of above-described embodiment superminiature water leak sensor, comprise: data center module pipeline leakage testing, hotel, holiday village water heater detection of electrical leakage, house and commercial water heater Leak Detection, the detection of leaking of tank and toilet, freezes or the water pipe monitoring of explosion reservoir level monitoring, oil sump monitoring, basement water quality monitoring.
The power supply mode of above-described embodiment superminiature water leak sensor, comprises 3.0V button cell (CR2032).
The technical indicator of above-described embodiment superminiature water leak sensor, comprising: 433MHz/900 MHz frequency of operation, and removable 3.0V button cell, temperature range-20 ° C is+60 ° of C extremely, the outer transmission range (depending on battery electric quantity) of 70 100 meters of – sight lines; By 1 hour monitoring frequency, sustainable work 2 years; Instant detection (meeting water reports), for detection of any non-volatile liquid, the ideal chose of Embedded Application, user-defined threshold alerts and notification message.
The detailed technology parameter of above-described embodiment superminiature water leak sensor, comprise: radio frequency specification is that frequency of operation 433MHz or 900 MHz(are according to regulation and customer requirement), circuit specification is the replaceable 3.0V button cell of battery types, maximum operation temperature-20 ° C is to+60 ° of C, best battery operated temperature (button cell)+10 ° C is to+50 ° of C, supply voltage 2.0-3.6 V, the outer transmission range (depending on battery electric quantity) of 70 100 meters of – sight lines; By 1 hour monitoring frequency, sustainable work 2 years; ABS engineering plastics shell, 1 meter of probe length.
LinkMote adopts the Sensor Network core technology of the peaceful gram of independent research in Jiangsu.The wireless sensor network node of LinkMote exploitation has adopted SoC SOC (system on a chip) scheme, has used the embedded OS of independent research simultaneously, and at present domestic other producer's products adopt zigbee host-host protocol, data transmission rate fiduciary level 70%; LinkMote adopts the autonomous procotol of AxonWeb, and data transmission rate fiduciary level reaches 99.3%.
The size of above-described embodiment superminiature water leak sensor, is preferably long 45 millimeters × wide 26 millimeters × high 20 millimeters.
The packing content thing of above-described embodiment superminiature water leak sensor external packing, comprising: wireless senser (being superminiature water leak sensor), CR2032 button cell, installs screw and paster (the seamless glue material of 3M) is installed.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a superminiature water leak sensor, is characterized in that, comprises the main circuit and the auxiliary circuit that connect successively; Described main circuit comprises that model is the superminiature water leakage sensing module U1 of LM311, and reveals with described superminiature water the first contact pin connector P1 and the second contact pin connector P2 that sensing module U1 is connected respectively; Described superminiature water is revealed sensing module U1 and is connected with auxiliary circuit.
2. superminiature water leak sensor according to claim 1, it is characterized in that, described superminiature water is revealed sensing module U1, comprise rectifier bridge, resistance R 1, R3, R4, R5, R6, R8, R9, R10, R11, R12, R13 and R14, triode T1, T2 and T3, capacitor C 1, C2, C3, C4 and C5, PIC12 chip and LM311 chip; Wherein:
The input termination AC power of described rectifier bridge, the output terminal of rectifier bridge is connected with the collector of triode T1, is connected and after capacitor C 3 and resistance R 6, is connected with the base stage of triode T3 successively after resistance R 5 with the collector of triode T2 after resistance R 1;
The emitter of described triode T1 is unsettled, the base earth of triode T1, the base stage of triode T1, also ground connection after capacitor C 1 and capacitor C 2 respectively, be connected with the 8th link of PIC12 chip, after resistance R 4, be connected with the emitter of triode T2, after resistance R 8, be connected with the emitter of triode T3, after capacitor C 4, be connected with the collector of triode T3 and the 5th link of PIC12 chip respectively, after resistance R 9, be connected with the collector of triode T3, be connected with the 1st link of PIC12 chip and the 4th link of PIC12 chip, after resistance R 11, be connected with the 6th link of PIC12 chip and the 7th link of LM311 chip respectively, respectively with the 5th link of LM311 chip, the 6th link of LM311 chip and the 8th link of LM311 chip are connected, after resistance R 10, be connected with the 2nd link of LM311 chip, and be connected with the 3rd link of LM311 chip after resistance R 13, resistance R 12 and capacitor C 5 are connected in parallel between the 2nd link of LM311 chip and the 3rd link of LM311 chip, resistance R 14 be connected to LM311 chip the 3rd link and ground between, the common port of resistance R 10 and resistance R 13 is as the first probe, and the common port of resistance R 13 and resistance R 14 is as the second probe, the 1st link of LM311 chip and the 4th link ground connection of LM311 chip, the base stage of described triode T2 is connected with the 7th link of PIC12 chip after resistance R 3.
3. superminiature water leak sensor according to claim 1 and 2, it is characterized in that, described main circuit, also comprise that one end and superminiature water are revealed the 1st link of sensing module U1 and the second link of superminiature water leakage sensing module U1 is connected, the first capacitor C 21 of other end ground connection, one end reveals the 28th link of sensing module U1 with superminiature water and the 29th link of superminiature water leakage sensing module U1 is connected, the second capacitor C 291 of other end ground connection, one end is connected with the 30th link that superminiature water is revealed sensing module U1, the 3rd capacitor C 301 of other end ground connection, one end is connected with the 31st link that superminiature water is revealed sensing module U1, the 4th capacitor C 311 of other end ground connection, and be connected to superminiature water and reveal the first resistance R 311 between the 31st link and the second contact pin connector P2 of sensing module U1.
4. superminiature water leak sensor according to claim 3, it is characterized in that, described auxiliary circuit, comprise that one end reveals the 28th link of sensing module U1 and superminiature water and reveal respectively the 4th capacitor C 191, the 5th capacitor C 221, the 6th capacitor C 251, the 7th capacitor C 261 and the 8th capacitor C 1 that the 29th link is connected, the other end is distinguished ground connection of sensing module U1 with superminiature water, and one end and the 8th capacitor C 1 one end is remotely connected, the other end is connected with direct supply VDD the first inductance L 1;
Described the 5th capacitor C 221 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 22nd link of superminiature water leakage sensing module U1; The 6th capacitor C 251 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 25th link of superminiature water leakage sensing module U1; The 7th capacitor C 261 and superminiature water are revealed the common port of the 28th link of sensing module U1 and the 29th link of superminiature water leakage sensing module U1, are also connected with the 26th link of superminiature water leakage sensing module U1.
5. superminiature water leak sensor according to claim 4, it is characterized in that, described auxiliary circuit, also comprise that being connected to superminiature water in turn reveals the 9th capacitor C 231 between the 23rd link and the ground of sensing module U1, the second inductance L 232, the 3rd inductance L 233, the tenth capacitor C 235 and toggle switch P3, be connected to the 4th inductance L 241 between the common port of the 9th capacitor C 231 and the second inductance L 232 and the 24th link of superminiature water leakage sensing module U1, and, one end reveals the 24th link of sensing module U1 with superminiature water and the common port of the 4th inductance L 241 is connected, the 11 capacitor C 241 of other end ground connection, one end is connected with the common port of the second inductance L 232 and the 3rd inductance L 233, the 12 capacitor C 232 of other end ground connection, one end is connected with the common port of the 3rd inductance L 233 and the tenth capacitor C 235, the 13 capacitor C 233 of other end ground connection.
6. superminiature water leak sensor according to claim 5, it is characterized in that, described auxiliary circuit, also comprise that the 17th end that sensing module U1 is revealed with superminiature water in one end is connected, the 14 capacitor C 171 of other end ground connection, one end is connected with the 18th end that superminiature water is revealed sensing module U1, the 15 capacitor C 181 of other end ground connection, one end is connected with the 21st end that superminiature water is revealed sensing module U1, the 16 capacitor C 211 of other end ground connection, one end is connected with the 20th end that superminiature water is revealed sensing module U1, the 17 capacitor C 201 of other end ground connection, and, one end is connected with the 27th end that superminiature water is revealed sensing module U1, the second resistance R 271 of other end ground connection.
7. superminiature water leak sensor according to claim 6, it is characterized in that, described auxiliary circuit, also comprise the first crystal oscillator X1 between the common port of the 20th end that is connected to the 17 capacitor C 201 and superminiature water leakage sensing module U1 and the common port of the 21st end of the 16 capacitor C 211 and superminiature water leakage sensing module U1, and, be connected to the 14 capacitor C 171 and superminiature water and reveal the second crystal oscillator X2 between the common port of the 17th end of sensing module U1 and the common port of the 18th end of the 15 capacitor C 181 and superminiature water leakage sensing module U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232460.2U CN203909983U (en) | 2014-05-07 | 2014-05-07 | Ultra-miniature water leakage sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420232460.2U CN203909983U (en) | 2014-05-07 | 2014-05-07 | Ultra-miniature water leakage sensor |
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| CN203909983U true CN203909983U (en) | 2014-10-29 |
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| CN201420232460.2U Expired - Fee Related CN203909983U (en) | 2014-05-07 | 2014-05-07 | Ultra-miniature water leakage sensor |
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