CN205506311U - Multi -functional detecting system that leaks - Google Patents
Multi -functional detecting system that leaks Download PDFInfo
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- CN205506311U CN205506311U CN201620112193.4U CN201620112193U CN205506311U CN 205506311 U CN205506311 U CN 205506311U CN 201620112193 U CN201620112193 U CN 201620112193U CN 205506311 U CN205506311 U CN 205506311U
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Abstract
The utility model discloses a multi -functional detecting system that leaks, including sensing detecting element, MCU, the relay output unit, communication circuit, power supply circuit and acousto -optic warning unit, sensing detecting element leaks and detects and convey MCU with the detected value, MCU judges according to the size of detected value that the state that detects that leaks is normal condition, the broken string state, state of leaking or laying dust state, the relay output unit is connected with MCU, be used for detecting the broken string state as MCU, output dry contact signal when state of leaking or laying dust state and emergence are reported an emergency and asked for help or increased vigilance, MCU passes through communication circuit and host computer communication, and carry out the remote monitoring through the host computer, acousto -optic warning unit and MCU are connected, a form is reported to the police that is used for with sound and luminous. Implement the utility model discloses a multi -functional detecting system that leaks has following beneficial effect: it leaks to have detects function, broken string detection and laying dust maintenance function, can avoid the emergence to fail to report and report by mistake.
Description
Technical field
This utility model relates to leak water detdction field, particularly to a kind of multi-functional water-leakage detecting system.
Background technology
Leak and often can occur in any building, once occur it is possible to cause heavy economic losses.Using heating equipment more in northern China, south refrigeration air-conditioner is popularized, and heating cooling aqueduct is distributed in floor gap, adds domestic water, fire demand water etc., is all the potential risk of leakage accident.Epoch in network popularization and application, the leak water detdction of data center machine room is particularly important, forceful electric power line, weak electric wire are typically all disposed within electrostatic floor, machine room is not easy after leaking because of air-conditioning or fire protection pipeline to find, can not detect if once leaked in time and get rid of, the consequence caused is not only device damage, causes the serious accident that fire occurs time serious.Therefore, the leak water detdction to data center module is the indispensable project of center monitoring.Leak water detdction product in the market is numerous, but owing to the technical merit of each producer is uneven, the performance difference of leak water detdction product is bigger, it is impossible to fully meet the differentiation requirement of leak detection of the room, is primarily present problems with:
1. there is no burn out detection function.Now widely used is delocalization formula leak water detdction, and delocalization formula leak water detdction typically uses the two-wire system line of induction to detect, and can only detect whether to leak, not have burn out detection function.If after water-leakage detection cable broken string, then cannot be carried out leak water detdction, it is possible to create fail to report situation, therefore there is great risk.
2. there is no laying dust preservation & testing function.Water leakage detection line is too many due to laying dust, it is also possible to report to the police, but is not generation of leaking, and this situation is just reported by mistake.
Utility model content
The technical problems to be solved in the utility model is, above-mentioned for prior art has leak water detdction and does not has burn out detection and laying dust maintenance function, is susceptible to the defect failing to report and report by mistake, it is provided that a kind of has leak water detdction, burn out detection, laying dust detection and warning function, be avoided that the multi-functional water-leakage detecting system failed to report and report by mistake.
nullThis utility model solves its technical problem and be the technical scheme is that a kind of multi-functional water-leakage detecting system of structure，Including sensing detection unit、MCU、Relay output unit、Telecommunication circuit、Power circuit and acousto-optic warning unit，Described sensing detection unit carries out leak water detdction and detected value is sent to described MCU，According to the size of described detected value, described MCU judges that the state of leak water detdction is normal condition、Broken string state、State of leaking or laying dust state，Described relay output unit is connected with described MCU、For broken string state being detected as described MCU、State of leaking or laying dust state output dry contact signal when there is alarm，Described MCU is by described telecommunication circuit and host computer communication、And remotely monitored by described host computer，Described acousto-optic warning unit is connected with described MCU、For reporting to the police with sound and luminous form，Described power circuit converts input voltage into the supply voltage meeting the work of described multi-functional water-leakage detecting system.
In multi-functional water-leakage detecting system described in the utility model, described sensing detection unit includes the cable type line of induction.
In multi-functional water-leakage detecting system described in the utility model, the described cable type line of induction uses the two-wire system line of induction, the three-wire system line of induction or the four-wire system line of induction.
nullIn multi-functional water-leakage detecting system described in the utility model，Described sensor unit also includes the first resistance、Second resistance and voltage follower，The described four-wire system line of induction includes the first common cable、Second wire rope、3rd common cable and the 4th wire rope，One end of described first common cable is connected with one end of described second wire rope，The other end of the described first common cable connects reference power source by described first resistance，The other end of the described first common cable also positive input with described voltage follower is connected，The outfan of described voltage follower is connected with its reverse input end，The outfan of described voltage follower is also connected with described MCU，One end of described 3rd common cable is connected with one end of described 4th wire rope，The other end of described second wire rope is connected with the other end of the described 3rd common cable by described second resistance，The other end ground connection of described 4th wire rope.
nullIn multi-functional water-leakage detecting system described in the utility model，Described sensor unit also includes the first resistance、Second resistance and voltage follower，The described three-wire system line of induction includes the second wire rope、3rd common cable and the 4th wire rope，One end of described second wire rope is unsettled，The other end of described second wire rope connects reference power source by described first resistance，The other end of described second wire rope also positive input with described voltage follower is connected，The outfan of described voltage follower is connected with its reverse input end，The outfan of described voltage follower is also connected with described MCU，One end of described 3rd common cable is connected with one end of described 4th wire rope，The other end of described second wire rope is connected with the other end of the described 3rd common cable by described second resistance，The other end ground connection of described 4th wire rope.
In multi-functional water-leakage detecting system described in the utility model, described sensor unit also includes the first resistance, second resistance and voltage follower, the described two-wire system line of induction includes the second wire rope and the 4th wire rope, one end of described second wire rope is unsettled, the other end of described second wire rope is connected with reference power source by described first resistance, the other end of described second wire rope also positive input with described voltage follower is connected, the outfan of described voltage follower is connected with its reverse input end, the outfan of described voltage follower is also connected with described MCU, the other end of described second wire rope is also by described second resistance eutral grounding, one end of described 4th wire rope is unsettled, the other end ground connection of described 4th wire rope.
In multi-functional water-leakage detecting system described in the utility model, the crust of described second wire rope and the 4th wire rope all uses and can make by conductive plastic.
In multi-functional water-leakage detecting system described in the utility model, described acousto-optic warning unit includes buzzer and LED light, described buzzer is connected with described MCU, is used for reporting to the police in a voice form, and described LED light is connected with described MCU, for indicating the state of leak water detdction.
In multi-functional water-leakage detecting system described in the utility model, described telecommunication circuit uses RS485 interface to communicate.
nullImplement multi-functional water-leakage detecting system of the present utility model，Have the advantages that owing to using sensing detection unit、MCU、Relay output unit、Telecommunication circuit and acousto-optic warning unit，Sensing detection unit carries out leak water detdction and detected value is sent to MCU，According to the size of detected value, MCU judges that the state of leak water detdction is normal condition、Broken string state、State of leaking or laying dust state，Relay output unit is for broken string state being detected as MCU、State of leaking or laying dust state output dry contact signal when there is alarm，Acousto-optic warning unit is for reporting to the police with sound and luminous form，Just can judge it is normal condition by the size of detected value、Broken string state、State of leaking or laying dust state，And when broken string state occurs、Can report to the police when state of leaking or laying dust state，Thus can remind and take corresponding treatment measures in time，So it has leak water detdction、Burn out detection、Laying dust detection and warning function、It is avoided that and fails to report and report by mistake.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation in one embodiment of the multi-functional water-leakage detecting system of this utility model；
Fig. 2 is the structural representation during sensing detection unit employing four-wire system line of induction in described embodiment；
Fig. 3 is the structural representation during sensing detection unit employing three-wire system line of induction in described embodiment.
Fig. 4 is the structural representation during sensing detection unit employing two-wire system line of induction in described embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
In this utility model multi-functional water-leakage detecting system embodiment, the structural representation of its multi-functional water-leakage detecting system is as shown in Figure 1.nullIn Fig. 1，This multi-functional water-leakage detecting system includes sensing detection unit 1、MCU2、Relay output unit 3、Telecommunication circuit 4、Power circuit 5 and acousto-optic warning unit 6，Sensing detection unit 1 carries out leak water detdction and detected value is sent to MCU2，According to the size of detected value, MCU2 judges that the state of leak water detdction is normal condition、Broken string state、State of leaking or laying dust state，Relay output unit 3 is connected with MCU2、For broken string state being detected as MCU2、State of leaking or laying dust state output dry contact signal when there is alarm，That is，When MCU2 detects broken string state、When state of leaking or laying dust state (dust is many)，MCU2 is by telecommunication circuit 4 and host computer communication，Remotely monitored by host computer，Acousto-optic warning unit 6 is connected with MCU2、For reporting to the police with sound and luminous form，Power circuit 5 converts input voltage into the supply voltage meeting the work of this multi-functional water-leakage detecting system，For sense detector unit 1、MCU2、Relay output unit 3、Telecommunication circuit 4 and acousto-optic warning unit 6 are powered，Power circuit 5 is namely equivalent to mu balanced circuit，When voltage voltage stabilizing is at the supply voltage meeting the work of this multi-functional water-leakage detecting system.
It is noted that in the present embodiment, MCU2 uses universal microprocessor, being the process core of water leakage controller, it mainly realizes the function such as water leakage collection and process, telecommunication management, output control, sound and light alarm control.In the present embodiment, telecommunication circuit 4 uses RS485 interface to communicate, and its cost is relatively low, and transmission range farther out, is the bridge communicated between MCU2 with host computer, it is achieved remote monitoring function.So its there is leak water detdction, burn out detection, laying dust safeguards and warning function, is avoided that and fails to report, reports by mistake.
In the present embodiment, sensing detection unit 1 includes the cable type line of induction.The cable type line of induction can use the four-wire system line of induction, can use the three-wire system line of induction, it would however also be possible to employ the two-wire system line of induction.
In the present embodiment, when using the four-wire system line of induction, the structural representation of its sensing detection unit is as shown in Figure 2.nullIn Fig. 2，This sensing detection unit also includes the first resistance R1、Second resistance R2 and voltage follower A，This four-wire system line of induction includes the first common cable W1、Second wire rope W2、3rd common cable W3 and the 4th wire rope W4，Wherein，One end of first common cable W1 is connected (by wire short circuit) with one end of the second wire rope W2，The other end of the first common cable W1 connects reference power source by the first resistance R1，Its reference voltage level is Vref，The other end of the first common cable W1 also with the positive input of voltage follower A+be connected，The outfan of voltage follower A and its reverse input end-be connected，The outfan of voltage follower A is also connected with MCU2，The output voltage of the outfan of voltage follower A is Vo，3rd common one end of cable W3 is connected (by wire short circuit) with one end of the 4th wire rope W4，The other end of the second wire rope W2 is connected by the other end of the second resistance R2 and the 3rd common cable W3，The other end ground connection of the 4th wire rope W4.It is noted that in the present embodiment, the crust of the second wire rope W2 and the 4th wire rope W4 all uses and can make by conductive plastic.Constitute the four-wire system water leakage detection warning system can with burn out detection function.
The equivalent resistance that leaks in the present embodiment, when the 3rd resistance R3 is to leak.
In the present embodiment, it is achieved leak water detdction principle is as follows:
1. time normally, R3=∞, Vo=R2/ (R1+R2) * Vref.
If the most any one cable breaks, the first common cable W1, the second wire rope W2, the 3rd common cable W3 and the 4th wire rope W4 do not constitute loop, Vo=Vref.
3., if leaked or time dust is many, Ri is the 3rd resistance R3 and the parallel value of the second resistance R2, Ri=R2*R3/ (R2+R3), Vo=Ri/ (R1+Ri) * Vref.
4. output voltage Vo being input in the A/D converter (not shown) of MCU2, MCU2 collects the actual value of output voltage Vo.Actual value according to output voltage Vo may determine that the state of leak water detdction.
Such as: Vref=5V, R1=R2=50K Ω, as Vo=2.5V, the cable that shows to leak is normal；As Vo=5V, show that water-leakage detection cable breaks；When Vo < during 2.5V, shows that water-leakage detection cable leaks or laying dust phenomenon.In the present embodiment, threshold value can be set and cumulative time judgement is leaked or laying dust is too many.Such as, < during 2.5V, 10 days cumulative times, the cable laying dust that shows to leak is many, needs cleaning when 2 < Vo；As Vo, < when 2, the cable that shows to leak leaks, and needs to check immediately, eliminates leakage source.The four-wire system line of induction is used can accurately to judge whether water-leakage detection cable breaks, it is ensured that water-leakage detection cable is the most in running order, it is to avoid if can not find in time after broken string, not have water leakage detecting function.It has and judges laying dust maintenance function, and according to signal value and the accumulated time of detection, the cable laying dust that accurately judges to leak is too many, if water-leakage detection cable laying dust is too many, needs cleaning in time, it is ensured that water-leakage detection cable normally works.
The present embodiment can also set different detection sensitivities according to different detection water quality, it is ensured that accurately detect generation of leaking.
In the present embodiment, carrying out simplifying the variable three-wire system line of induction that turns to and detect on the basis of four-wire system, when using the three-wire system line of induction, the structural representation of its sensing detection unit is as shown in Figure 3.nullIn Fig. 3，This sensing detection unit also includes the first resistance R1、Second resistance R2 and voltage follower A，This three-wire system line of induction includes the second wire rope W2、3rd common cable W3 and the 4th wire rope W4，Wherein，One end of second wire rope W2 is unsettled，The other end receives reference power source by the first resistance R1，Its reference voltage level is Vref，Second wire rope W2 one end also with the positive input of voltage follower A+be connected，The outfan of voltage follower A and its reverse input end-be connected，The outfan of voltage follower A is also connected with MCU2，The output voltage of the outfan of voltage follower A is Vo，3rd common one end of cable W3 is connected (by wire short circuit) with one end of the 4th wire rope W4，The second wire rope W2 other end passes through the second resistance R2 other end also with the 3rd common cable W3 and is connected，The other end ground connection of the 4th wire rope W4.In the present embodiment, the crust of the second wire rope W2 and the 4th wire rope W4 all uses and can make by conductive plastic.Constitute the three-wire system water leakage detection warning system can with burn out detection function.In the present embodiment, the equivalent resistance that leaks when the 3rd resistance R3 is to leak, this example detection principle is similar with four-wire system.
Under the certain situation of the present embodiment, this multi-functional water-leakage detecting system can also access in the water leakage detection warning that need not cable burn out detection, at this moment just uses the two-wire system line of induction.Fig. 4 is the structural representation during sensing detection unit employing two-wire system line of induction in the present embodiment.In Fig. 4, sensing detection unit 1 also includes the first resistance R1, second resistance R2 and voltage follower A, the two-wire system line of induction includes the second wire rope W2 and the 4th wire rope W4, wherein, one end of second wire rope W2 is unsettled, the other end of the second wire rope W2 is connected with reference power source by the first resistance R1, the other end of the second wire rope W2 also with the positive input of voltage follower A+be connected, the outfan of voltage follower A and its reverse input end-be connected, the outfan of voltage follower A is also connected with MCU2, the other end of the second wire rope W2 is also by the second resistance R2 ground connection, one end of 4th wire rope W4 is unsettled, the other end ground connection of the 4th wire rope W4.The crust of the second wire rope W2 and the 4th wire rope W4 all uses and can make by conductive plastic.Constitute two-wire system water leakage detection warning system.The equivalent resistance that leaks in the present embodiment, when the 3rd resistance R3 is to leak.This example leak water detdction principle is similar with four-wire system.
This multi-functional water-leakage detecting system both can access has the three-wire system of burn out detection, four-wire system water-leakage detection cable, it is also possible to compatible other only have the two-wire system water-leakage detection cable of leak water detdction, and its compatibility is relatively strong, and function is more perfect, and practicality is higher.
In the present embodiment, acousto-optic warning unit 6 includes buzzer 61 and LED light 62, wherein, buzzer 61 is connected with MCU2, for reporting to the police in a voice form, namely there is auditory tone cues when alarm, LED light 62 is connected, is used for indicating the state of leak water detdction with MCU2, and LED light 62 may indicate that the type of alarm: leaks, breaks or safeguard (dust) etc..Certainly, different alarm types can use the LED light sending different colours light.
In a word, in the present embodiment, according to the requirement of data center module leak water detdction so that function and the performance of water-leakage detecting system are improved the most comprehensively, it is fully achieved the center monitoring needs to leak water detdction.The advantages such as this multi-functional water-leakage detecting system has that function is strong, low cost and simple installation.This multi-functional water-leakage detecting system is with a wide range of applications in terms of the leak water detdction of data center module.This multi-functional water-leakage detecting system simple in construction, practical.Leak water detdction signal can access three-wire system sensing cable, it is also possible to accesses two-wire system sensing cable, it is also possible to accesses four-wire system sensing cable, it is ensured that the compatibility in use.It addition, LED light can also further expand into for indicating MCU2 to run, communicate, leak, break, safeguarding state instructions such as (dusts).
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (9)
1. a multi-functional water-leakage detecting system, it is characterised in that include sensing detection unit, MCU, continue
Electrical equipment output unit, telecommunication circuit, power circuit and acousto-optic warning unit, described sensing detection unit is carried out
Detected value is also sent to described MCU, the described MCU size judgement according to described detected value by leak water detdction
The state of leak water detdction is normal condition, broken string state, state of leaking or laying dust state, and described relay is defeated
Go out unit to be connected with described MCU, for broken string state, state of leaking or laying dust being detected as described MCU
State output dry contact signal when there is alarm, described MCU is logical by described telecommunication circuit and host computer
Believing and remotely monitored by described host computer, described acousto-optic warning unit is connected with described MCU, uses
In reporting to the police with sound and luminous form, described power circuit convert input voltage into meet described many
The supply voltage of function water-leakage detecting system work.
Multi-functional water-leakage detecting system the most according to claim 1, it is characterised in that described sensing is examined
Survey unit and include the cable type line of induction.
Multi-functional water-leakage detecting system the most according to claim 2, it is characterised in that described cable type
The line of induction uses the two-wire system line of induction, the three-wire system line of induction or the four-wire system line of induction.
Multi-functional water-leakage detecting system the most according to claim 3, it is characterised in that described sensor
Unit also includes that the first resistance, the second resistance and voltage follower, the described four-wire system line of induction include that first is general
Logical cable, the second wire rope, the 3rd common cable and the 4th wire rope, the described first common cable
One end is connected with one end of described second wire rope, and the other end of the described first common cable is by described the
One resistance connects reference power source, and the other end of the described first common cable is also defeated with the forward of described voltage follower
Entering end to connect, the outfan of described voltage follower is connected with its reverse input end, described voltage follower
Outfan is also connected with described MCU, one end of the described 3rd common cable and the one of described 4th wire rope
End connects, and the other end of described second wire rope is by described second resistance and the described 3rd common cable
The other end connects, the other end ground connection of described 4th wire rope.
Multi-functional water-leakage detecting system the most according to claim 3, it is characterised in that described sensor
Unit also includes that the first resistance, the second resistance and voltage follower, the described three-wire system line of induction include the second gold medal
Belonging to cable, the 3rd common cable and the 4th wire rope, one end of described second wire rope is unsettled, described
The other end of the second wire rope connects reference power source by described first resistance, described second wire rope another
One end also positive input with described voltage follower is connected, and the outfan of described voltage follower is anti-with it
Connecting to input, the outfan of described voltage follower is also connected with described MCU, described 3rd ordinary lines
One end of cable is connected with one end of described 4th wire rope, and the other end of described second wire rope passes through institute
State the second resistance to be connected with the other end of the described 3rd common cable, another termination of described 4th wire rope
Ground.
Multi-functional water-leakage detecting system the most according to claim 3, it is characterised in that described sensor
Unit also includes that the first resistance, the second resistance and voltage follower, the described two-wire system line of induction include the second gold medal
Belonging to cable and the 4th wire rope, one end of described second wire rope is unsettled, described second wire rope
The other end is connected with reference power source by described first resistance, the other end of described second wire rope also with institute
The positive input stating voltage follower connects, and the outfan of described voltage follower is with its reverse input end even
Connecing, the outfan of described voltage follower is also connected with described MCU, the other end of described second wire rope
Also by described second resistance eutral grounding, one end of described 4th wire rope is unsettled, described 4th wire rope
Other end ground connection.
7. according to the multi-functional water-leakage detecting system described in claim 4,5 or 6, it is characterised in that described
The crust of the second wire rope and the 4th wire rope all uses can be made by conductive plastic.
Multi-functional water-leakage detecting system the most according to claim 1, it is characterised in that described acousto-optic report
Alert unit includes that buzzer and LED light, described buzzer are connected with described MCU, for sound
Form report to the police, described LED light is connected with described MCU, for indicating the shape of leak water detdction
State.
Multi-functional water-leakage detecting system the most according to claim 7, it is characterised in that described communication electricity
Road uses RS485 interface to communicate.
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| CN201620112193.4U CN205506311U (en) | 2016-02-03 | 2016-02-03 | Multi -functional detecting system that leaks |
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| CN201620112193.4U CN205506311U (en) | 2016-02-03 | 2016-02-03 | Multi -functional detecting system that leaks |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702865A (en) * | 2017-12-07 | 2018-02-16 | 成都量之星科技有限公司 | A kind of leakage inspector of stabilization |
| CN108802109A (en) * | 2018-08-14 | 2018-11-13 | 中国南方电网有限责任公司超高压输电公司大理局 | A kind of leak water detdction and positioning system |
| CN109029880A (en) * | 2018-06-28 | 2018-12-18 | 苏州大成电子科技有限公司 | A kind of hand-held leakage inspector based on contact net |
| CN109443652A (en) * | 2018-12-16 | 2019-03-08 | 山西汾西重工有限责任公司 | Deep-sea aircraft promotes mainly motor water pressure test leak water detdction circuit and detection method |
| CN110466330A (en) * | 2019-09-18 | 2019-11-19 | 杭州航林科技有限公司 | New-energy automobile skylight automatic leak detection drainage arrangement |
| CN113776758A (en) * | 2021-07-26 | 2021-12-10 | 深圳谷探科技有限公司 | Liquid leakage detection positioning device, system and method |
| CN109443652B (en) * | 2018-12-16 | 2024-04-26 | 山西汾西重工有限责任公司 | Water leakage detection circuit and detection method for hydraulic test of main thrust motor of deep sea aircraft |
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2016
- 2016-02-03 CN CN201620112193.4U patent/CN205506311U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702865A (en) * | 2017-12-07 | 2018-02-16 | 成都量之星科技有限公司 | A kind of leakage inspector of stabilization |
| CN109029880A (en) * | 2018-06-28 | 2018-12-18 | 苏州大成电子科技有限公司 | A kind of hand-held leakage inspector based on contact net |
| CN108802109A (en) * | 2018-08-14 | 2018-11-13 | 中国南方电网有限责任公司超高压输电公司大理局 | A kind of leak water detdction and positioning system |
| CN109443652A (en) * | 2018-12-16 | 2019-03-08 | 山西汾西重工有限责任公司 | Deep-sea aircraft promotes mainly motor water pressure test leak water detdction circuit and detection method |
| CN109443652B (en) * | 2018-12-16 | 2024-04-26 | 山西汾西重工有限责任公司 | Water leakage detection circuit and detection method for hydraulic test of main thrust motor of deep sea aircraft |
| CN110466330A (en) * | 2019-09-18 | 2019-11-19 | 杭州航林科技有限公司 | New-energy automobile skylight automatic leak detection drainage arrangement |
| CN113776758A (en) * | 2021-07-26 | 2021-12-10 | 深圳谷探科技有限公司 | Liquid leakage detection positioning device, system and method |
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