CN113776758A - Liquid leakage detection positioning device, system and method - Google Patents

Abstract

The application discloses weeping detects positioner, system and method, wherein, the device includes: the liquid leakage detection device comprises a signal wire arranged in a framework, and a first sensing wire and a second sensing wire which are uniformly distributed with resistors, wherein the two sensing wires are arranged side by side, the first sensing wire is connected with an external resistor R1 and forms a loop with the signal wire connected with an external resistor R2, the second sensing wire is connected with an external power supply, when liquid leakage occurs, the second sensing wire is conducted with the first sensing wire, the first sensing wire is divided into an R leakage resistor and an R wire-R leakage resistor, the R leakage resistor and the R wire-R leakage resistor form loops with R1 and R2 respectively, voltage values V1 and V2 of R1 and R2 are obtained, R leakage is correspondingly obtained, and the position of a water leakage point on the first sensing wire is obtained based on the ratio of the R leakage and the R wire.

Description

Liquid leakage detection positioning device, system and method

Technical Field

The present disclosure relates to the field of liquid leakage detection, and particularly to a positioning device, a system and a method for liquid leakage detection.

Background

The computer lab or data center is used for depositing server or large-scale equipment, and the heavy current under the floor, light current, electric wire, earth cable vertically and horizontally staggered, in case leak, the consequence is unfortunate, and the equipment room leaks water and endangers greatly, is difficult to discover again, consequently is very necessary to the detection of the condition of leaking, but current detection of leaking can know that there is leaking, also can fix a position and detect the water leakage point, but to the detection device hardware requirement height, and fix a position accurate inadequately.

Based on the above problems, the prior art needs to be improved.

Disclosure of Invention

The purpose of this application is to realize the location detection that leaks of equipment or system.

The technical purpose of the application is realized by the following technical scheme:

a leak detection positioning device, comprising: the liquid leakage detection device comprises a signal wire arranged in a framework, and a first sensing wire and a second sensing wire which are uniformly distributed with resistors, wherein the two sensing wires are arranged side by side, the first sensing wire is connected with an external resistor R1 and forms a loop with the signal wire connected with an external resistor R2, the second sensing wire is connected with an external power supply, when liquid leakage occurs, the second sensing wire is conducted with the first sensing wire, the first sensing wire is divided into an R leakage resistor and an R wire-R leakage resistor, the R leakage resistor and the R wire-R leakage resistor form loops with R1 and R2 respectively, voltage values V1 and V2 of R1 and R2 are obtained, the R leakage is correspondingly obtained, and the position of a water leakage point on the first sensing wire is obtained based on the ratio of the R leakage and the R wire.

This application above-mentioned scheme, when having the condition of leaking to take place, first sensing line and second sensing line switch on, through the magnitude of voltage who acquires R1 and R2, the length and the resistance of reunion first sensing line, can reach the resistance value of the first sensing line of the point both sides that leaks, combine the ratio of resistance value and the resistance of first sensing line, can reach the position of the point that leaks at first sensing line, accurate location, seek the point that leaks, be convenient for in time discover and maintain.

Optionally, the leakage detection and location device is configured to derive R leakage = (I2 × R2+ I2 × R line-I1 × R1)/(I1 + I2) based on R1, R2 and corresponding voltage values R1 and R2, where I2= V2/R2, and I1= V1/R1.

According to the scheme, based on the fact that the voltages of the junction points in the circuit loop are equal, it can be obtained that I1 (R1 + R drain) = I2 (R2 + R line-R drain), the resistance value of the R drain can be calculated, the resistance value of one side of the water drain can be obtained by combining the voltage V1 of R1 and the voltage V2 of R2 under the condition that R1 and R2 are known, and the position of the water drain is conveniently and quickly obtained.

Optionally, the leakage detecting and positioning device, wherein the relationship between the position L leakage and the position R leakage of the leakage point is as follows: l drain = L line R drain/R line.

According to the technical scheme, the wire rod resistance evenly distributed of first sensing line, consequently, after acquireing the resistance of leaking water point one side, through the ratio of the resistance of leaking water point and the resistance of first sensing line, the length of reunion first sensing line can obtain the distance of the position of leaking water point and the initial point of first sensing line, and convenient accurate position of finding out the leaking water point.

Optionally, the leakage detecting and positioning device further includes a disconnection detecting signal line in the framework, the disconnection detecting signal line is connected to the second sensing line to form a loop, and whether the second sensing line is disconnected is determined by obtaining a voltage of the second sensing line.

According to the scheme, the disconnection detection signal line is arranged, the disconnection detection signal line can form a loop with the second sensing line, when the voltage of the second sensing line is acquired, if voltage abnormity is found, disconnection can be timely alarmed, a user can timely maintain, and the influence on the precision of water leakage detection due to disconnection is avoided.

Optionally, the leakage detecting and positioning device, wherein the signal line, the first sensing line, the second sensing line, and the disconnection detecting signal line are connected to an outgoing line with a terminal, and are connected to an external power supply or a host through the outgoing line.

According to the scheme, the outgoing line is connected with the external power supply or the host, wiring is conveniently carried out at the position where water leakage detection is not needed, and the measurement precision is guaranteed.

Optionally, the leakage detecting and positioning device is characterized in that a groove is formed in the framework, and the signal line, the first sensing line, the second sensing line and the disconnection detecting signal line are arranged in the groove.

According to the scheme, the wire is arranged in the groove, certain fault tolerance can be guaranteed, and the external leakage reaches the position of the groove so that the wire can enter the wire body.

Optionally, the liquid leakage detection positioning device, wherein the skeleton is spiral.

This application above-mentioned scheme, through setting up heliciform skeleton, guarantees overall structure's stability.

Optionally, the leakage detecting and positioning device, wherein the end of the framework is connected with a sealing element.

This application above-mentioned scheme sets up the sealing member at the skeleton end, can wholly seal and stereotype the skeleton, guarantees holistic stable in structure.

On the other hand, this application still discloses a weeping detects positioning system, include as above weeping detects positioner, wherein, still include the monitoring host computer, be equipped with 1 or a plurality of interface on the monitoring host computer, signal line, first sensing line, second sensing line, broken string detection signal line with interface connection provides power output through the monitoring host computer, the host computer still is used for showing weeping information and broken string warning information.

According to the scheme, the monitoring host can be connected with 1 or more leakage detection positioning devices to acquire signals, leakage information and disconnection warning information can be displayed, and leakage information centralized processing is achieved.

On the other hand, the application also discloses a leakage detection positioning method, wherein, the method comprises the following steps:

acquiring voltages V1 and V2 of external resistors R1 and R2 in real time;

calculating the resistance Rdrain on one side of the liquid leakage position based on R1, R2, V1 and V2, wherein the resistance on the other side of the liquid leakage position is R line-Rdrain;

obtaining the position of a leakage point on the sensing line based on the ratio of the R leakage to the resistance value R line of the sensing line;

and correcting the position of the liquid leakage point on the sensing line and the corresponding fitting error to obtain the final position of the liquid leakage point.

This application above-mentioned scheme, through the voltage that acquires R1 and R2 in real time, the resistance value of draw-off point one side is obtained, based on the resistance value of draw-off point one side and the ratio of sensing line, the position of draw-off point on the sensing line can be obtained, in order to improve the precision that detects the location, combine the fitting algorithm, based on the draw-off point distance, obtain the fitting error, synthesize and obtain final draw-off point position, the accurate detection location of draw-off point has been realized.

In summary, the present application discloses a device, a system and a method for detecting and positioning leakage, wherein the device comprises: the liquid leakage detection device comprises a signal wire arranged in a framework, and a first sensing wire and a second sensing wire which are uniformly distributed with resistors, wherein the two sensing wires are arranged side by side, the first sensing wire is connected with an external resistor R1 and forms a loop with the signal wire connected with an external resistor R2, the second sensing wire is connected with an external power supply, when liquid leakage occurs, the second sensing wire is conducted with the first sensing wire, the first sensing wire is divided into an R leakage resistor and an R wire-R leakage resistor, the R leakage resistor and the R wire-R leakage resistor form loops with R1 and R2 respectively, voltage values V1 and V2 of R1 and R2 are obtained, R leakage is correspondingly obtained, and the position of a water leakage point on the first sensing wire is obtained based on the ratio of the R leakage and the R wire.

Drawings

FIG. 1 is a schematic view of a leak detection positioning device according to the present application.

Fig. 2 is a schematic structural diagram of the leakage detection positioning device according to the present application.

Fig. 3 is a schematic diagram of the embodiment of the leakage detection positioning device according to the present application after the framework is removed.

Fig. 4 is a schematic diagram of an error-fitting curve of an embodiment of the leakage detection positioning apparatus according to the present application.

Reference numerals: 101. a framework; 102. a signal line; 103. a first sensing line; 104. a second sensing line; 105. a disconnection detection signal line; 106. an outgoing line; 107. a seal member; 108. and (4) a groove.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a leakage detection positioning device according to the present application, and fig. 2 is a schematic structural diagram of the device according to the present application. The embodiment of the application discloses weeping detects positioner, wherein, includes: the liquid leakage detection circuit comprises a signal wire 102 arranged in a framework 101, and a first sensing wire 103 and a second sensing wire 104 which are uniformly distributed in resistance, wherein the two sensing wires are arranged side by side, the first sensing wire 103 is connected with an external resistor R1 and forms a loop with the signal wire 102 connected with an external resistor R2, the second sensing wire 104 is connected with an external power supply, when liquid leakage occurs, the second sensing wire 104 is conducted with the first sensing wire 103, the first sensing wire 103 is divided into an R leakage resistor and an R wire-R leakage resistor, the R leakage resistor and the R1 and the R2 form loops respectively, voltage values V1 and V2 of R1 and R2 are obtained, the R leakage is obtained correspondingly, and the position of a water leakage point on the first sensing wire 103 is obtained based on the ratio of the R leakage and the R wire.

In the embodiment of the application, in order to realize the detection and positioning of the water leakage point, the first sensing line 103, the second sensing line 104 and the signal line 102 are arranged in the framework 101, after the external power is connected, the external power is conducted with the second sensing line 104, because the second sensing line 104 and the first sensing line 103 are arranged side by side, when no leakage occurs, the first sensing line 103 is not conducted, the voltages of the resistor R1 and the resistor R2 are both 0, when leakage occurs, the first sensing line 103 and the second sensing line 104 are conducted, at this time, the voltage V1 of the resistor R1 and the voltage V2 of the resistor R2 are obtained, two loops are formed at the position of the leakage point, the voltage at the joint of the two loops is equal, therefore, the resistance of the resistor R on one side of the leakage point can be obtained by combining the voltage = current, and because the resistance of the first sensing line 103 is uniformly distributed, the ratio of the leakage point of the resistor R to the first sensing line 103 is based on the leakage resistance, the specific position of the water leakage point on the first sensing line 103 can be obtained, and the accurate positioning of the water leakage point is realized.

The foregoing solution mentions that the voltages V1 and V2 are obtained, and based on the knowledge of R1 and R2, the size of rleak can be obtained, and specifically, the leakage detection and positioning device, wherein based on R1 and R2 and the corresponding voltage values R1 and R2, rleak = (I2 × R2+ I2 × R line-I1 × R1)/(I1 + I2) is obtained, wherein I2= V2/R2, and I1= V1/R1.

In the embodiment of the present application, the resistor on one side of the first sensing line 103 is an rdlout, and the resistor on the other side is an rdlout, because the voltages at the junctions are equal, I × (R + R) = I × (R + R) —, I × (I + R) = I × (I + I) = R) = I × R line-I × R drain, (I + I) = R drain = I × R + I × R line-I × R, and finally, R drain = (I + I × R line-I + I) = R line-I + I), because V and V can be directly obtained through the voltages, and R are fixed resistance values, it is known that I = V/R, I = V/R can also be calculated, and therefore, the position of the leak can be known conveniently located by obtaining V and V.

The aforesaid scheme has mentioned the resistance that obtains water leakage point one side, can derive the position of water leakage point, specifically, weeping detect positioner, wherein, the relation that the position L of water leakage point leaks and R leaks is: l drain = L line R drain/R line.

In the embodiment of the application, because the resistance of the first sensing line 103 is uniformly distributed, that is, the resistance of each unit length is fixed, therefore, after obtaining V1 and V2, the size of the R leak is obtained, the relative position of the water leak point on the first sensing line 103 can be known by the ratio of the R leak to the R line, and in order to more intuitively know the position of the water leak point, for example, the skeleton 101 of the water leak detection and positioning device is provided with scales, and the total length L line of the first sensing line 103 is combined with the ratio of the R leak to the R line, so that the L leak = L line R leak/R line can be obtained, the distance between the water leak point and the initial point of the first sensing line 103 can be obtained, if the scales are arranged on the skeleton 101, the water leak point can be directly found through the scales, the water leak is timely erased, and the normal operation of the device is ensured.

This application the scheme, the position of different water leakage point, actual position with pass through the water leakage point position that the device acquireed may have the deviation, consequently, based on above-mentioned problem, in this application embodiment, through many times of experiments, has obtained the contrast table based on water leakage point position, measuring point position and water leakage point actual position, as shown in the following table:

quality of water	1m	2m	3m	4m	5m	6m	7m	8m	9m	10m
											Air conditioner water leakage	1.5	2.4	3.29	4.3	5.5	6.2	6.91	7.99	9.44	10.38
Tap water	0.95	2.2	3.18	4.1	5.1	6.2	7.17	7.95	8.8	10.11
											Drinking water	1.01	2.25	3.2	4.15	5.2	6.27	7.3	7.88	8.97	10.33
Beverage and its preparing process	1.08	2.1	2.95	4.05	5.27	6.22	7.13	7.94	9.07	10.27

11m	12m	13m	14m	15m	16m	17m	18m	19m	20m
										11.29	12.44	12.98	13.5	14.88	15.78	17.3	18.35	19.04	20.22
11.05	12.04	13.18	14.07	15.2	16.21	17.04	18.05	19.2	20.18
										11.28	12.2	13.05	14.03	15	16.1	17.3	18.2	18.88	19.73
11.21	12.23	13.07	13.87	15.03	16.03	17.21	18.20	19.04	20.04

21m	22m	23m	24m	25m	26m	27m	28m	29m	30m
										21.47	22.28	23.04	24.25	25.18	25.91	26.77	27.6	28.97	30.3
20.83	21.99	23.05	24.07	24.98	26	27.05	28.09	29.1	30.13
										21.09	22.3	23.01	24	25.15	26.13	27.01	28.31	29.23	29.99
21.13	22.19	23.03	24.11	25.10	26.01	26.94	28.00	29.10	30.14

31m	32m	33m	34m	35m
					31.22	32.03	33.29	34.33	34.79
31.2	31.97	32.96	34	34.85
					31.24	31.77	32.89	33.94	34.8
31.22	31.92	33.05	34.09	34.81

In the table, 1, the impedance coefficient of the experimental water leakage rope is 13.1 ohm/meter;

2. marking the measuring points at intervals of 1M, wherein the actual measuring error is less than +/-5 cm;

3. the equivalent resistance of the air conditioner to water leakage is large, the water passing current is minimum, and the measurement error reaches the maximum when the distance is less than 3M.

As can be seen from the table:

1. solubility of impurity ions: air conditioner water leakage < drinking water < beverage (tea) < tap water;

2. the lower the concentration of impurity ions is, the shorter the water leakage distance is, and the larger the error is;

within the measurement range of 3.35M, the maximum measurement error of the impurity water is +/-0.5M and the maximum measurement error of the impurity water is +/-0.3M.

Based on the above error, in order to ensure that the error between the position of the water leakage point for detection and positioning and the actual position of the water leakage point is smaller, and improve the detection precision, in the embodiment, through experimental data, refer to the following table:

	1	2	3	4	5	6	7	8	9	10
											actual display	1.05	2.06	3.03	4.05	5.1	6.11	6.96	8.05	9.12	10.12
Difference value	0.05	0.06	0.03	0.05	0.1	0.11	-0.04	0.05	0.12	0.12

11	12	13	14	15	16	17	18	19	20
										11.14	12.1	13.05	14.2	15.17	16.28	17.13	18.14	19.33	20.26
0.14	0.1	0.05	0.2	0.17	0.28	0.13	0.14	0.33	0.26

21	22	23	24	25	26	27	28	29	30
										21.18	21.99	22.89	24.16	25.05	26.3	27.17	28.19	29.33	30.29
0.18	-0.01	-0.11	0.16	0.05	0.3	0.17	0.19	0.33	0.29

31	32	33	34	35	36	37	38	39	40
										31.34	32.27	33.37	34.19	35.11	36.41	37.22	38.38	39.44	40.5
0.34	0.27	0.37	0.19	0.11	0.41	0.22	0.38	0.44	0.5

41	42	43	44	45	46	47	48	49	50
										41.47	42.33	43.1	44.28	45.56	46.61	47.44	48.63	49.21	50.77
0.47	0.33	0.1	0.28	0.56	0.61	0.44	0.63	0.21	0.77

Based on experimental data, a fitting curve based on measurement errors is simulated, as shown in fig. 3, based on error fitting, in specific application, R leakage is obtained through V1 and V2, and when L leakage occurs, the fitting error value is obtained by combining the coordinates of the L leakage on the X axis, and finally the corrected water leakage point position is obtained based on the L leakage and the error value, so that the measurement accuracy is improved.

In the embodiment of the present application, the voltage V1 and V2 of R1 and R2 are obtained to determine whether or not there is a liquid leakage and a liquid leakage position, specifically, after the liquid leakage, the second sensing line 104 is conducted with the first sensing line 103, but when the second sensing line 104 fails, even if a liquid leakage occurs, since the second sensing line 104 fails to form a loop with the first sensing line 103, it is impossible to determine whether or not there is a liquid leakage and to position the liquid leakage.

This application embodiment, second sensing line 104 is connected with external power supply, when leaking, switches on with first sensing line 103 to can obtain the resistance that leaks through acquireing the voltage, whether for the convenience detect second sensing line 104 damages, form the return circuit through disconnected line detection signal line 105 and second sensing line 104, acquire the magnitude of voltage of second sensing line 104, if the magnitude of voltage of second sensing line 104 is unusual, then send alarm signal, the user can be in time right the weeping detects positioner and detects the maintenance.

In this application embodiment, sensing line and signal line 102 etc. set up side by side with the connecting wire of equipment or system, and external power supply need be connected to sensing line and signal line 102 etc. and this section connecting wire need not leak the detection, consequently, based on above-mentioned problem, in this application embodiment, weeping detect positioner, wherein, signal line 102 and first sensing line 103, second sensing line 104, broken string detect signal line 105 and are connected with the lead-out wire 106 that takes the binding post, through lead-out wire 106 is connected with external power supply or host computer.

The embodiment of the application comprises an outgoing line 106, the outgoing line 106 is connected with an external power supply or a monitoring host, the length of the outgoing line 106 can be selected according to actual needs, and the line body distribution of the outgoing line 106 is consistent with the arrangement of the sensing lines, the signal lines 102 and the like.

In this embodiment, the material of the frame 101 causes a small amount of liquid to be volatilized quickly, so that a certain fault tolerance can be realized, and therefore, in this embodiment, the liquid leakage detecting and positioning device, see fig. 4, is a schematic diagram of the device after the frame is removed, wherein a groove 108 is formed in the frame 101, and the signal line 102, the first sensing line 103, the second sensing line 104 and the disconnection detecting signal line 105 are formed in the groove 108.

In this application embodiment, the line body was located recess 108, after the weeping reached the border of recess 108, just can soak the line body, can guarantee certain fault-tolerance, under the less condition of weeping, can ignore.

The liquid leakage detection positioning device is characterized in that the framework 101 is spiral.

According to the embodiment of the application, the framework 101 is arranged in a spiral mode, and the strength of the whole device can be guaranteed.

The leakage detection positioning device is characterized in that the tail end of the framework 101 is connected with a sealing element 107.

This application embodiment, skeleton 101 spiral setting, one end is connected with lead-out wire 106, and the other end passes through the leakproofness sealed, prevents that skeleton 101 from scattering, guarantees holistic intensity.

In the embodiment of the application, the framework is preferably made of fluorine-containing polymer, and after the wire is arranged in the framework, the integral structure has strong mechanical property, corrosion resistance and wear resistance.

Through this application the device, detection sensitivity is high, reaction time is fast. The water quality detector is made of imported materials, and has excellent detection sensitivity and quick response time for various water qualities; the corrosion resistance and the abrasion resistance are strong. Special materials are added in the cable manufacturing process, so that the cable has strong acid and alkali corrosion resistance and wear resistance; the maintenance is convenient, the device can be used repeatedly, and after an alarm is given, the device can be immediately wiped by dry cloth; the service life is long; industry design standard, service time greater than 10 years.

On the other hand, this application still discloses a weeping detects positioning system, include as above weeping detects positioner, wherein, still include the monitoring host computer, be equipped with 1 or a plurality of interface on the monitoring host computer, signal line 102, first sense line 103, second sense line 104, broken string detect signal line 105 with interface connection provides power output through the monitoring host computer, the host computer still is used for showing weeping information and broken string warning information.

The embodiment of the application also discloses a weeping detects positioning system, specifically, except that the weeping detects positioner, still includes the monitoring host computer, the monitoring host computer includes one or more interface, can with a plurality of weeping detects positioner and connects to realized the centralized processing of weeping information, alleviateed the manpower, improved monitoring efficiency.

On the other hand, the application also discloses a leakage detection positioning method, wherein, the method comprises the following steps:

acquiring voltages V1 and V2 of external resistors R1 and R2 in real time;

calculating the resistance Rdrain on one side of the liquid leakage position based on R1, R2, V1 and V2, wherein the resistance on the other side of the liquid leakage position is R line-Rdrain;

obtaining the position of a leakage point on the sensing line based on the ratio of the R leakage to the resistance value R line of the sensing line;

and correcting the position of the liquid leakage point on the sensing line and the corresponding fitting error to obtain the final position of the liquid leakage point.

This application embodiment, based on the device of aforementioned scheme, after obtaining resistance R1 and R2's voltage, can correspond to the resistance R hourglass of weeping point one side, because different weeping positions, measurement accuracy's difference needs to combine the error to improve the precision, consequently, to different weeping positions, fits the error, corrects measured weeping position again, and the final weeping point that obtains is the better accuracy of position.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A weeping detects positioner, its characterized in that includes: the liquid leakage detection device comprises a signal wire arranged in a framework, and a first sensing wire and a second sensing wire which are uniformly distributed with resistors, wherein the two sensing wires are arranged side by side, the first sensing wire is connected with an external resistor R1 and forms a loop with the signal wire connected with an external resistor R2, the second sensing wire is connected with an external power supply, when liquid leakage occurs, the second sensing wire is conducted with the first sensing wire, the first sensing wire is divided into an R leakage resistor and an R wire-R leakage resistor, the R leakage resistor and the R wire-R leakage resistor form loops with R1 and R2 respectively, voltage values V1 and V2 of R1 and R2 are obtained, the R leakage is correspondingly obtained, and the position of a water leakage point on the first sensing wire is obtained based on the ratio of the R leakage and the R wire.

2. The leakage detection and positioning device according to claim 1, wherein R leakage = (I2 × R2+ I2 × R line-I1 × R1)/(I1 + I2) based on R1, R2 and corresponding voltage values R1 and R2, wherein I2= V2/R2, I1= V1/R1.

3. The leakage detection positioning device according to claim 2, wherein the relationship between the positions of the leakage points Lleak and Rleak is: l drain = L line R drain/R line.

4. The leakage detection positioning device according to claim 1, wherein a disconnection detection signal line is further provided in the framework, the disconnection detection signal line is connected to the second sensing line to form a loop, and the second sensing line is determined whether to be disconnected or not by obtaining a voltage of the second sensing line.

5. The leakage detection positioning device according to claim 1 or 4, wherein the signal line and the first, second and break detection signal lines are connected with an outgoing line with a terminal, and connected with an external power supply or a host through the outgoing line.

6. The leakage detection positioning device according to claim 1 or 4, wherein a groove is formed in the frame, and the signal line, the first sensing line, the second sensing line and the disconnection detection signal line are arranged in the groove.

7. The leak detection positioning device according to claim 6, wherein the frame is helical.

8. The leak detection positioning device according to claim 7, wherein a seal is attached to an end of the frame.

9. A leakage detection positioning system, comprising the leakage detection positioning device as claimed in any one of claims 1 to 8, further comprising a monitoring host, wherein the monitoring host is provided with 1 or more interfaces, the signal line, the first sensing line, the second sensing line, and the disconnection detection signal line are connected to the interfaces, the monitoring host provides power output, and the host is further configured to display leakage information and disconnection warning information.

10. A method for detecting and positioning leakage is characterized by comprising the following steps:

acquiring voltages V1 and V2 of external resistors R1 and R2 in real time;

calculating the resistance Rdrain on one side of the liquid leakage position based on R1, R2, V1 and V2, wherein the resistance on the other side of the liquid leakage position is R line-Rdrain;

obtaining the position of a leakage point on the sensing line based on the ratio of the R leakage to the resistance value R line of the sensing line;

and correcting the position of the liquid leakage point on the sensing line and the corresponding fitting error to obtain the final position of the liquid leakage point.

Images