Leakage detection control method, device, system, electrical system and storage medium

Abstract

The application provides a leakage detection control method, device, system, electrical system and storage medium, and relates to the technical field of leakage detection.The leakage detection control system comprises at least one first sensor and at least one second sensor, the at least one first sensor and the at least one second sensor are arranged in the same space, and the detection accuracy and service life of the first sensor are both greater than those of the second sensor.The first gas concentration data detected by the at least one first sensor and the second gas concentration data detected by the at least one second sensor are regularly acquired, the concentration of each second sensor is corrected, the detection accuracy and service life of the second sensor are improved, the performance of the second sensor is stably output in the whole service life, and therefore, the long-term reliable detection requirement is met to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of leakage detection technology, and in particular to a leakage detection and control method, device, system, electrical system, and storage medium. Background Technology

[0002] With the widespread use of air conditioning, refrigerant, as a key component of air conditioning cooling, is being used extensively in various air conditioning systems. Most refrigerants are flammable, therefore leak detection is necessary to ensure safety.

[0003] Currently, semiconductor sensors are commonly used for refrigerant leak detection; however, the detection accuracy and lifespan of semiconductor sensors cannot meet the requirements for long-term reliable detection. Summary of the Invention

[0004] The purpose of this invention is to provide a leakage detection and control method, device, system, electrical system, and storage medium to meet the requirements for long-term reliable detection.

[0005] In a first aspect, embodiments of the present invention provide a leakage detection and control method applied to a leakage detection and control system. The leakage detection and control system includes at least one first sensor and at least one second sensor, wherein the at least one first sensor and the at least one second sensor are disposed in the same space. The detection accuracy and lifespan of the first sensor are both greater than those of the second sensor. The leakage detection and control method includes:

[0006] Periodically acquire first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor;

[0007] Based on the first gas concentration data and the second gas concentration data, concentration correction is performed on each of the second sensors.

[0008] Further, the step of performing concentration correction on each of the second sensors based on the first gas concentration data and the second gas concentration data includes:

[0009] Based on the first gas concentration data, determine whether a gas leak has occurred;

[0010] When no gas leak occurs, a baseline concentration value is determined based on the first gas concentration data;

[0011] Based on the baseline concentration value and the second gas concentration data, a concentration correction is performed on each of the second sensors.

[0012] Further, the step of performing concentration correction on each of the second sensors based on the reference concentration value and the second gas concentration data includes:

[0013] Based on the second gas concentration data, determine the current gas concentration value corresponding to each of the second sensors;

[0014] Calculate the deviation between the current gas concentration value and the reference concentration value to obtain the corresponding deviation value for the second sensor;

[0015] Based on the deviation value, the concentration of the corresponding second sensor is corrected.

[0016] Further, the step of correcting the concentration of the corresponding second sensor based on the deviation value includes:

[0017] Determine whether the absolute value of the deviation is greater than a preset critical value;

[0018] When the judgment result is greater than the critical value, the corresponding second sensor is subjected to concentration compensation corresponding to the deviation value.

[0019] Secondly, embodiments of the present invention also provide a leak detection and control device applied to a leak detection and control system. The leak detection and control system includes at least one first sensor and at least one second sensor, wherein the at least one first sensor and the at least one second sensor are disposed in the same space. The detection accuracy and lifespan of the first sensor are both greater than those of the second sensor. The leak detection and control device includes:

[0020] The acquisition module is used to periodically acquire first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor;

[0021] The correction module is used to correct the concentration of each of the second sensors based on the first gas concentration data and the second gas concentration data.

[0022] Thirdly, embodiments of the present invention also provide a leakage detection and control system, including a main controller, and at least one first sensor and at least one second sensor respectively connected to the main controller, wherein the at least one first sensor and the at least one second sensor are arranged in the same space, and the detection accuracy and lifespan of the first sensor are greater than those of the second sensor.

[0023] The main controller is used to periodically acquire first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor; and to perform concentration correction on each second sensor based on the first gas concentration data and the second gas concentration data.

[0024] Furthermore, the first sensor includes a photoelectric sensor, and the second sensor includes a semiconductor sensor.

[0025] Fourthly, embodiments of the present invention also provide an electrical system, including the leakage detection and control system of the third aspect.

[0026] Furthermore, the electrical system includes a multi-split air conditioning system, and the main controller is the indoor unit electrical control device of the multi-split air conditioning system.

[0027] Fifthly, embodiments of the present invention also provide a storage medium storing a computer program, wherein the computer program is executed by a processor to perform the leakage detection and control method of the first aspect.

[0028] The leakage detection and control method, apparatus, system, electrical system, and storage medium provided in this invention include a leakage detection and control system comprising at least one first sensor and at least one second sensor, wherein the at least one first sensor and at least one second sensor are disposed in the same space, and the detection accuracy and lifespan of the first sensor are greater than those of the second sensor; by periodically acquiring the first gas concentration data detected by at least one first sensor and the second gas concentration data detected by at least one second sensor, concentration correction is performed on each second sensor, thereby improving the detection accuracy and lifespan of the second sensor and ensuring stable performance output throughout the entire lifespan of the second sensor, thus meeting the long-term reliable detection requirements to a certain extent. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a leakage detection and control system provided in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of a multi-split air conditioning system provided in an embodiment of the present invention;

[0032] Figure 3 This is a schematic flowchart of a leakage detection and control method provided in an embodiment of the present invention;

[0033] Figure 4 A schematic flowchart of another leakage detection and control method provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of a leakage detection and control device provided in an embodiment of the present invention. Detailed Implementation

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Currently, air conditioning systems using the environmentally friendly, slightly flammable refrigerant R32 lack safety measures for situations where the refrigerant is slightly flammable. To meet the safety requirements of R32 applications, and considering the low accuracy and lifespan (less than 5 years) of semiconductor sensors (leak detection sensors using semiconductor technology), which cannot meet long-term reliable detection requirements, this invention provides a leak detection and control method, device, system, electrical system, and storage medium. This method can meet safety and reliability requirements, achieving higher accuracy and a longer lifespan for effective application. It should be noted that this invention can be extended to air conditioning systems using flammable refrigerants or other household appliance applications containing similar substances, such as refrigerator systems using flammable refrigerants.

[0037] To facilitate understanding of this embodiment, a leak detection and control system disclosed in this embodiment of the invention will first be described in detail.

[0038] See Figure 1 The diagram shows a structural schematic of a leak detection and control system. This embodiment of the invention provides a leak detection and control system including a main controller 100, at least one first sensor 101, and at least one second sensor 102. Each first sensor 101 and each second sensor 102 is connected to the main controller 100. The at least one first sensor 101 and at least one second sensor 102 are arranged in the same space. The detection accuracy of the first sensor 101 is greater than that of the second sensor 102, and the lifespan of the first sensor 101 is greater than that of the second sensor 102.

[0039] The main controller 100 is used to periodically acquire first gas concentration data detected by at least one first sensor 101 and second gas concentration data detected by at least one second sensor 102; and to perform concentration correction on each second sensor 102 based on the first gas concentration data and the second gas concentration data.

[0040] Both the first sensor 101 and the second sensor 102 mentioned above are gas leak detection sensors. The first sensor 101 has excellent performance but is more expensive, while the second sensor 102 has lower cost but poorer performance. In this embodiment, the two are combined, using a small number of the more expensive first sensors 101 for system performance calibration, and multiple more cost-effective second sensors 102.

[0041] The first sensor 101 and the second sensor 102 located in the same space can be used as a set of sensors. When no gas leakage occurs, the gas concentration in the same space should be considered to be consistent. Therefore, the high-precision and long-life first sensor 101 can be used as a benchmark to correct the low-precision and short-life second sensor 102 in the same space, thereby improving the detection accuracy, lifespan and reliability of the second sensor 102.

[0042] Preferably, a first sensor 101 and multiple second sensors 102 are arranged in the same space. This achieves optimization of cost and performance.

[0043] The first sensor 101 and the second sensor 102 described above can be used to detect flammable refrigerants. Non-limiting examples of flammable refrigerants include the following: saturated hydrocarbons such as methane (R50), ethane (R170), propane (R290), butane (R600), pentane (R601), 2-methylpropane (R600a), and 2-methylbutane (R601a); unsaturated hydrocarbons such as ethylene (R1150) and propylene (R1270); or heteroatom-substituted hydrocarbons such as methoxymethane (RE170) and methyl formate (R611); hydrochlorocarbons; hydrochlorofluorocarbons such as 1-chloro-1,1-difluoroethane (R142b); and saturated hydrofluorocarbons such as difluoromethane (R32) and difluoroethane (R152). a) Fluoroethane (R161), 1,1,1-trifluoroethane (R143a), 1,1-difluoroethane (R152a), 1,1,1-trifluoroethane (R143a); hydrofluoroolefin (HFO) refrigerants, including 3,3,3-trifluoropropylene (HFO-1234zf), HFO-1234 refrigerants such as 2,3,3,3-tetrafluoropropylene (HFO-1234yf), 1,2,3,3-tetrafluoropropylene (HFO-1234ze(E)), cis- and trans-1,3,3,3-tetrafluoropropylene (HFO-1234ye(E),(Z)), pentafluoropropylene (H FO-1225) such as 1,1,3,3,3, pentafluoropropylene (HFO-1225zc) or those with hydrogen on the terminal unsaturated carbon such as 1,2,3,3,3, pentafluoropropylene (HFO-1225ye(Z)), fluorochloropropylene such as trifluoro, monochloropropylene (HFO-1233) such as CF3CCl=CH2 (HFO-1233xf) and CF3CH=CHCl (HFO-1233zd); hydrogen (R702); ammonia (R717); azeotropic mixtures such as R403A, R406A, R411A, R411B, R412A, R413 A, R415A, R415B, R418A, R419A, R419B, R429A, R430A, R431A, R432A, R433A, R433B, R433C, R435A, R436A, R436B, R439A, R440A, R411a, R443A, R444A, R444B, R445A, R446A, R447A, R448A, R449A, R450A, R451A, R451B, R452A, R510A, R511A, R512A, R513A, and combinations thereof.For example, certain flammable refrigerants may include hydrofluoroolefin (HFO) mixture 1 (a mixture of difluoromethane (R32), 1,2,3,3-tetrafluoropropylene (HFO-1234ze(E)), 3,3,3,-tetrafluoropropylene (HFO-1234zf), and difluoroethane (R152a), or hydrofluoroolefin (HFO) mixture 2 (a mixture of difluoromethane (R32), trans-1-chloro-3,3,3-trifluoropropylene, HFO-1233zd(E), and 3,3,3,-trifluoropropylene (HFO-1234zf)). In some variations, the flammable refrigerant is selected from difluoromethane (R32).

[0044] The first sensor 101 and the second sensor 102 can be selected from the following types of sensors: semiconductor sensor, catalytic bead sensor, point infrared short-path sensor, open (long-path) infrared sensor, photoacoustic infrared sensor, thermal conductivity sensor, photoionization (PID) sensor, non-dispersive infrared (NDIR) sensor, etc.

[0045] Optionally, the first sensor 101 includes a photoelectric sensor, and the second sensor 102 includes a semiconductor sensor. The photoelectric sensor and the semiconductor sensor can be arranged in a designated area of ​​the core, such as the human activity area corresponding to the height of an adult.

[0046] Photoelectric sensors are leak detection sensors that utilize photoelectric principles. They detect gas concentration by converting changes in light intensity into changes in electrical signals. Photoelectric sensors offer advantages such as long lifespan, high detection accuracy, and fast detection speed.

[0047] Semiconductor sensors refer to leak detection sensors that utilize semiconductor technology. Semiconductor sensors can employ gas sensors that correspond to the composition of the gas to be detected. These gas sensors convert parameters such as the composition and concentration of the gas into changes in resistance, and then into a current signal. Semiconductor sensors can be manufactured based on the principle that some semiconductors absorb the gas to be detected and undergo a redox reaction. Their main components are metal oxides, primarily tin dioxide, iron oxide, vanadium pentoxide, titanium dioxide, nickel oxide, cobalt oxide, and rare earth transition metal oxides.

[0048] Taking the leaked gas as a fluorinated refrigerant as an example, the semiconductor sensor can be an N-type semiconductor gas-sensitive resistor used for fluorinated refrigerants; or taking the leaked gas as the new environmentally friendly refrigerant R32 as an example, the semiconductor sensor can be an N-type semiconductor gas-sensitive resistor used for R32. Exemplarily, these N-type semiconductor gas-sensitive resistors can include any of the following: tin oxide (SnO2) semiconductor gas-sensitive resistors, zinc oxide (ZnO) semiconductor gas-sensitive resistors, and iron oxide (Fe2O3) semiconductor gas-sensitive resistors.

[0049] By using a photoelectric sensor with long lifespan, high precision, and fast detection speed as a benchmark, the semiconductor sensor equipped in the system can be modified to ensure that the semiconductor sensor can work effectively for up to 10 years (the effective lifespan of a conventional semiconductor sensor is 5 years), thus meeting the system's safety application requirements and improving detection accuracy and lifespan.

[0050] This invention also provides an electrical system that includes the aforementioned leak detection and control system. This electrical system can be, but is not limited to, an air conditioning system or a refrigerator system using flammable refrigerants.

[0051] Preferably, the electrical system includes a multi-split air conditioning system, and the main controller 100 of the leakage detection and control system can be the indoor unit electrical control device of the multi-split air conditioning system.

[0052] For ease of understanding, see Figure 2 The diagram shows a multi-split air conditioning system. The system includes an outdoor unit control unit 201, multiple indoor unit control units 202, and at least one set of sensors. Each indoor unit control unit 202 is connected to the outdoor unit control unit 201, and the indoor unit control units 202 are communicatively connected to each other. The set of sensors includes at least one photoelectric sensor 203 and multiple semiconductor sensors 204 disposed in the same space. The photoelectric sensor 203 and the semiconductor sensor 204 are respectively connected to the corresponding indoor unit control unit 202.

[0053] The outdoor unit control device 201 is located inside the outdoor unit, and the indoor unit control device 202 is located inside the indoor unit. One outdoor unit control device 201 can control multiple indoor unit control devices 202, for example, 32 indoor unit control devices 202. One or more indoor units can be arranged in the same space, meaning that one or more indoor unit control devices 202 can exist in the same space. The indoor unit control device 202 may include interconnected mainboards and expansion boards to achieve corresponding functions.

[0054] High-precision photoelectric sensors and semiconductor sensors are installed in the same space. When no refrigerant leak occurs, the low-precision R32 semiconductor sensors on the indoor side, under monitoring, are corrected periodically (e.g., an interval of one day). Each indoor unit is corrected independently. For an indoor unit control device 202 connected to semiconductor sensor A, if it is also connected to photoelectric sensor B, and photoelectric sensor B belongs to the same sensor group as semiconductor sensor A, then the indoor unit control device 202 can use photoelectric sensor B as a reference to correct semiconductor sensor A. If it is not connected to any photoelectric sensor, or the connected photoelectric sensor does not belong to the same sensor group as semiconductor sensor A, then the indoor unit control device 202 can obtain the gas concentration data detected by photoelectric sensor B from other indoor unit control devices 202 and correct semiconductor sensor A. Through photoelectric sensors, a comprehensive comparative application of semiconductor sensors is achieved, improving the reliability of semiconductor sensors in this application scenario.

[0055] This invention also provides a leakage detection and control method, which is applied to the aforementioned leakage detection and control system. See also... Figure 3 The diagram shows a flow chart of a leakage detection and control method, which mainly includes the following steps S302 to S304:

[0056] Step S302: Periodically acquire first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor.

[0057] In one possible implementation, a single gas concentration value detected by each sensor can be acquired periodically; in another possible implementation, to improve detection accuracy and reliability, a set of gas concentration values ​​(i.e., multiple gas concentration values) detected by each sensor can be acquired periodically. Based on this, the first gas concentration data may include one or more gas concentration values ​​detected by each first sensor, and the second gas concentration data may include one or more gas concentration values ​​detected by each second sensor. The concentration correction interval can be set according to actual needs, for example, an interval of one day.

[0058] Step S304: Based on the first gas concentration data and the second gas concentration data, perform concentration correction on each second sensor.

[0059] Considering that the gas concentration is consistent in the same space when no gas leak occurs, step S304 can be implemented through the following process: determine whether a gas leak has occurred based on the first gas concentration data; when no gas leak has occurred, determine the reference concentration value based on the first gas concentration data; and perform concentration correction on each second sensor based on the reference concentration value and the second gas concentration data.

[0060] When determining whether a gas leak has occurred, the initial gas concentration data can be compared with the rated alarm concentration. If a gas concentration value greater than the rated alarm concentration exists, a gas leak is confirmed; otherwise, no gas leak has occurred. The rated alarm concentration can be set according to actual needs and is not limited here; for example, a rated alarm concentration of 5000 ppm.

[0061] The above-mentioned baseline concentration values ​​can be determined in the following way:

[0062] 1. When the first gas concentration data is a gas concentration value detected by a first sensor, the gas concentration value is determined as the reference concentration value;

[0063] 2. When the first gas concentration data includes multiple gas concentration values ​​detected by one or more first sensors, the reference concentration value can be the average of the multiple gas concentration values.

[0064] The concentration correction of the second sensor can be achieved as follows: based on the second gas concentration data, determine the current gas concentration value corresponding to each second sensor; calculate the deviation between the current gas concentration value and the reference concentration value to obtain the deviation value corresponding to the second sensor; and perform concentration correction on the corresponding second sensor based on the deviation value.

[0065] The current gas concentration value can be determined as follows: when the second gas concentration data includes a gas concentration value detected by each second sensor, that gas concentration value is determined as the current gas concentration value of the corresponding second sensor; when the second gas concentration data includes multiple gas concentration values ​​detected by each second sensor, the current gas concentration value of the second sensor is the average of the multiple gas concentration values.

[0066] When performing concentration correction, it can be first determined whether the absolute value of the deviation is greater than a preset critical value. If the result is greater than the critical value, the corresponding second sensor is compensated for the concentration corresponding to the deviation value. The critical value can be set according to actual needs and is not limited here.

[0067] The leakage detection and control method provided in this invention corrects the concentration of each second sensor by periodically acquiring first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor. This improves the detection accuracy and lifespan of the second sensor, ensures stable performance output throughout the entire lifespan of the second sensor, and thus meets the long-term reliable detection requirements to a certain extent.

[0068] For ease of understanding, this embodiment uses a single photoelectric sensor paired with multiple semiconductor sensors as an example. The leakage detection and control method described above is further refined in this example. (See [link to relevant documentation]). Figure 4The diagram shows another leakage detection and control method, which includes the following steps:

[0069] Step S402: Power-on initialization.

[0070] Step S404: After the sensor is preheated, the concentration signal at the current moment is acquired.

[0071] The sensors here include photoelectric sensors and semiconductor sensors. The warm-up time can be set according to actual needs, such as 60 seconds.

[0072] In step S406, the photoelectric sensor outputs a concentration signal D0, and each semiconductor sensor outputs a concentration signal Dn.

[0073] Step S408: Calculate the absolute value deviation DE between D0 and Dn.

[0074] Step S410: Determine whether DE is greater than the critical value DE0. If yes, proceed to step S412; otherwise, proceed to step S414.

[0075] Step S412: Perform concentration compensation + / -DE on each Dn and use it as the output value of the semiconductor sensor.

[0076] Step S414: The system is being monitored and running normally.

[0077] One possible value is as follows: D0 is 100ppm, Dn is 600ppm, DE0 is 1000ppm, then DE is 500ppm, which is less than the critical value DE0, and the system monitors and operates normally. This ensures effective output within the rated alarm concentration range of 5000PPM±20%, ensuring the accuracy of the reference concentration and preventing false alarms or no alarms due to reference point drift.

[0078] Corresponding to the above-described leakage detection and control method, this embodiment of the invention also provides a leakage detection and control device, which is applied to the aforementioned leakage detection and control system. See also... Figure 5 The diagram shown illustrates the structure of a leak detection and control device, which includes:

[0079] The acquisition module 501 is used to periodically acquire first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor;

[0080] The correction module 502 is used to perform concentration correction on each second sensor based on the first gas concentration data and the second gas concentration data.

[0081] Furthermore, the aforementioned correction module 502 is specifically used for: determining whether a gas leak has occurred based on the first gas concentration data; when no gas leak has occurred, determining a reference concentration value based on the first gas concentration data; and correcting the concentration of each second sensor based on the reference concentration value and the second gas concentration data.

[0082] Furthermore, the correction module 502 is also used to: determine the current gas concentration value corresponding to each second sensor based on the second gas concentration data; calculate the deviation between the current gas concentration value and the reference concentration value to obtain the deviation value corresponding to the second sensor; and correct the concentration of the corresponding second sensor based on the deviation value.

[0083] Furthermore, the aforementioned correction module 502 is also used to: determine whether the absolute value of the deviation value is greater than a preset critical value; when the determination result is greater than the critical value, perform concentration compensation for the corresponding second sensor corresponding to the deviation value.

[0084] The leakage detection and control device provided in this embodiment has the same implementation principle and technical effect as the aforementioned leakage detection and control method embodiment. For the sake of brevity, any parts not mentioned in the leakage detection and control device embodiment can be referred to the corresponding content in the aforementioned leakage detection and control method embodiment.

[0085] This invention also provides a storage medium storing a computer program, which, when executed by a processor, performs the leakage detection and control method described in the preceding method embodiments. The storage medium includes various media capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), RAM, magnetic disk, or optical disk.

[0086] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0087] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0088] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0089] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0090] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0091] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A leakage detection and control method, characterized in that, An application is made in a leak detection and control system, comprising at least one first sensor and at least one second sensor, wherein the at least one first sensor and the at least one second sensor are arranged in the same space, the first sensor and the second sensor are of different types, the detection accuracy and lifespan of the first sensor are both greater than those of the second sensor, and both the first sensor and the second sensor operate normally in real time; the leak detection and control method includes: Periodically acquire first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor; Based on the first gas concentration data and the second gas concentration data, concentration correction is performed on each of the second sensors.

2. The leakage detection and control method according to claim 1, characterized in that, The step of performing concentration correction on each of the second sensors based on the first gas concentration data and the second gas concentration data includes: Based on the first gas concentration data, determine whether a gas leak has occurred; When no gas leak occurs, a baseline concentration value is determined based on the first gas concentration data; Based on the baseline concentration value and the second gas concentration data, a concentration correction is performed on each of the second sensors.

3. The leakage detection and control method according to claim 2, characterized in that, The step of performing concentration correction on each of the second sensors based on the reference concentration value and the second gas concentration data includes: Based on the second gas concentration data, determine the current gas concentration value corresponding to each of the second sensors; Calculate the deviation between the current gas concentration value and the reference concentration value to obtain the corresponding deviation value for the second sensor; Based on the deviation value, the concentration of the corresponding second sensor is corrected.

4. The leakage detection and control method according to claim 3, characterized in that, The step of correcting the concentration of the corresponding second sensor based on the deviation value includes: Determine whether the absolute value of the deviation is greater than a preset critical value; When the judgment result is greater than the critical value, the corresponding second sensor is subjected to concentration compensation corresponding to the deviation value.

5. A leakage detection and control device, characterized in that, An application is made in a leak detection and control system, comprising at least one first sensor and at least one second sensor, wherein the at least one first sensor and the at least one second sensor are arranged in the same space, the first sensor and the second sensor are of different types, the detection accuracy and lifespan of the first sensor are both greater than those of the second sensor, and both the first sensor and the second sensor operate normally in real time; the leak detection and control device includes: The acquisition module is used to periodically acquire first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor; The correction module is used to correct the concentration of each of the second sensors based on the first gas concentration data and the second gas concentration data.

6. A leakage detection and control system, characterized in that, It includes a main controller, and at least one first sensor and at least one second sensor respectively connected to the main controller. The at least one first sensor and the at least one second sensor are arranged in the same space. The first sensor and the second sensor are different types of sensors. The detection accuracy and lifespan of the first sensor are greater than those of the second sensor. Both the first sensor and the second sensor are operating normally in real time. The main controller is used to periodically acquire first gas concentration data detected by at least one first sensor and second gas concentration data detected by at least one second sensor; And based on the first gas concentration data and the second gas concentration data, concentration correction is performed on each of the second sensors.

7. The leakage detection and control system according to claim 6, characterized in that, The first sensor includes a photoelectric sensor, and the second sensor includes a semiconductor sensor.

8. An electrical system, characterized in that, Includes the leak detection and control system described in claim 6 or 7.

9. The electrical system according to claim 8, characterized in that, The electrical system includes a multi-split air conditioning system, and the main controller is the indoor unit electrical control device of the multi-split air conditioning system.

10. A storage medium storing a computer program, characterized in that, The computer program is executed by the processor to perform the leakage detection and control method according to any one of claims 1-4.

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