CN116989530B - Remote operation and maintenance detection method and system for multi-refrigerator system - Google Patents
Remote operation and maintenance detection method and system for multi-refrigerator system Download PDFInfo
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- CN116989530B CN116989530B CN202311267421.6A CN202311267421A CN116989530B CN 116989530 B CN116989530 B CN 116989530B CN 202311267421 A CN202311267421 A CN 202311267421A CN 116989530 B CN116989530 B CN 116989530B
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- 238000012423 maintenance Methods 0.000 title claims abstract description 54
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 72
- 238000005057 refrigeration Methods 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 19
- 230000004044 response Effects 0.000 claims description 11
- 230000003750 conditioning effect Effects 0.000 claims description 7
- 238000013459 approach Methods 0.000 description 6
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- 238000004364 calculation method Methods 0.000 description 4
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2500/00—Problems to be solved
- F25D2500/06—Stock management
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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Abstract
The invention provides a remote operation and maintenance detection method and a remote operation and maintenance detection system for a multi-refrigerator system, which relate to the technical field of refrigeration, and the method comprises the following steps: determining a first refrigerator with qualified temperature and a second refrigerator with unqualified temperature; sending a first test instruction to a controller of a first refrigerator; receiving second refrigeration power and second temperature information of the first refrigerator in a second time period, and determining a regulating capacity score according to the second refrigeration power and the second temperature information; sending a second test instruction to a controller of a second refrigerator; receiving third temperature information of the second refrigerator in a second time period, and determining a fault condition score according to the third temperature information and the first temperature information; and determining the operation and maintenance conditions of the multi-refrigerator system according to the adjustment capability score and the fault condition score. According to the invention, the temperature adjusting capability of the first refrigerator can be tested, the fault condition of the second refrigerator can be tested, the operation and maintenance conditions can be determined in a classified manner, and the convenience of operation and maintenance work is improved.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a remote operation and maintenance detection method and system for a multi-refrigerator system.
Background
In the use of freezer, can use a plurality of freezers to constitute many freezer systems to deposit multiple article respectively, however, the freezer quantity in many freezer systems probably is more, and sets up in different positions respectively, leads to there is a lot of inconvenience to the fortune dimension detection work of a plurality of freezers, for example, maintenance personal often need reach a plurality of positions to detect whether a plurality of freezers have trouble respectively.
Disclosure of Invention
The invention provides a remote operation and maintenance detection method and a remote operation and maintenance detection system for a multi-refrigerator system, which can solve the problem that operation and maintenance detection work for a plurality of refrigerators is inconvenient.
According to a first aspect of the present invention, there is provided a method for detecting remote operation and maintenance of a multi-refrigerator system, the method comprising:
respectively sending state request information to controllers of a plurality of refrigerators in the multi-refrigerator system;
acquiring refrigerator state information of a plurality of moments in a first time period sent by a controller of each refrigerator, wherein the refrigerator state information comprises first temperature information and first refrigeration power of the refrigerator at each moment;
determining a first refrigerator with qualified temperature and a second refrigerator with unqualified temperature according to the first temperature information and the set temperature of each refrigerator;
Sending a first test instruction to a controller of the first refrigerator with qualified temperature, wherein the first test instruction is used for testing the temperature adjusting capacity of the controller of the first refrigerator to the first refrigerator under the condition that the set temperature of the first refrigerator is changed;
receiving second refrigeration power and second temperature information of a plurality of moments in a second time period sent by a controller of the first refrigerator in response to the first test instruction, and determining an adjustment capacity score of the controller of the first refrigerator according to the second refrigeration power and the second temperature information;
sending a second test instruction to a controller of the second refrigerator with unqualified temperature, wherein the second test instruction is used for testing the fault condition of the second refrigerator;
receiving third temperature information of a plurality of moments in a second time period sent by a controller of the second refrigerator in response to the second test instruction, and determining a fault condition score of the second refrigerator according to the third temperature information and the first temperature information;
and determining the operation and maintenance conditions of the multi-refrigerator system according to the adjustment capability score and the fault condition score.
According to a second aspect of the present invention, there is provided a multi-refrigerator system remote operation and maintenance detection system, the system comprising:
the state request module is used for respectively sending state request information to controllers of a plurality of refrigerators in the multi-refrigerator system;
the system comprises a state acquisition module, a control module and a control module, wherein the state acquisition module is used for acquiring refrigerator state information of a plurality of moments in a first time period sent by a controller of each refrigerator, and the refrigerator state information comprises first temperature information and first refrigeration power of the refrigerator at each moment;
the dividing module is used for determining a first refrigerator with qualified temperature and a second refrigerator with unqualified temperature according to the first temperature information and the set temperature of each refrigerator;
the first test module is used for sending a first test instruction to the controller of the first refrigerator with qualified temperature, wherein the first test instruction is used for testing the temperature regulation capacity of the controller of the first refrigerator to the first refrigerator under the condition that the set temperature of the first refrigerator is changed;
the adjustment capacity scoring module is used for receiving second refrigeration power and second temperature information of a plurality of moments in a second time period sent by the controller of the first refrigerator in response to the first test instruction, and determining adjustment capacity scores of the controller of the first refrigerator according to the second refrigeration power and the second temperature information;
The second test module is used for sending a second test instruction to the controller of the second refrigerator with unqualified temperature, wherein the second test instruction is used for testing the fault condition of the second refrigerator;
the fault condition scoring module is used for receiving third temperature information of a plurality of moments in a second time period sent by the controller of the second refrigerator in response to the second test instruction, and determining fault condition scores of the second refrigerator according to the third temperature information and the first temperature information;
and the operation and maintenance condition module is used for determining the operation and maintenance condition of the multi-refrigerator system according to the adjustment capacity score and the fault condition score.
According to a third aspect of the present invention, there is provided a multi-refrigerator system remote operation and maintenance detection apparatus, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to invoke the instructions stored by the memory to perform the multi-refrigerator system remote operation and maintenance detection method.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the multi-refrigerator system remote operation and maintenance detection method.
The invention has the beneficial effects that: the first temperature information of each refrigerator can be obtained to judge whether the temperature of each refrigerator is qualified or not, classification tests are carried out, the temperature adjusting capacity of the first refrigerator with qualified temperature can be tested, the fault condition of the second refrigerator with unqualified temperature is tested, so that the operation and maintenance conditions of the multi-refrigerator system can be obtained in a classified mode, the refrigerators needing to be maintained can be determined based on the operation and maintenance conditions, and convenience is brought to operation and maintenance work of the multi-refrigerator system. When the adjustment capacity score of the first refrigerator is determined, the constant temperature power can be solved by utilizing the proportional relation between the temperature change rate and the difference value between the refrigeration power and the constant temperature power, and the second temperature information and the second refrigeration power at each moment, so that the calculation precision of the constant temperature power is improved, and further, the first relation coefficient with higher accuracy is obtained. And the adjustment capacity score can be determined by determining the relation between the adjustment time required by each first refrigerator after the set temperature is modified and the preset time threshold, the temperature adjustment efficiency and the temperature adjustment capacity of the first refrigerator can be represented by the required adjustment time, and the accuracy and objectivity of the adjustment capacity score are improved. When determining the fault condition score of the second refrigerator, whether the second refrigerator is faulty or not can be determined through the temperature regulation amplitude of the second refrigerator under the condition that the second refrigerator is operated at the maximum power, and the fault condition score can be obtained by using the approach degree of the temperature regulation capacity of the non-faulty refrigerator and the ideal temperature regulation capacity and the duty ratio of the non-faulty refrigerator so as to accurately reflect the approach degree between the integral condition of the second refrigerator and the ideal condition without faults, so that the accuracy and objectivity of the fault condition score can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed. Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the invention or the solutions of the prior art, the drawings which are necessary for the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other embodiments may be obtained from these drawings without inventive effort to a person skilled in the art,
fig. 1 schematically illustrates a flow chart of a method for remote operation and maintenance detection of a multi-refrigerator system according to an embodiment of the present invention;
fig. 2 schematically illustrates a block diagram of a multiple refrigerator system remote operation and maintenance detection system according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Fig. 1 schematically illustrates a flow chart of a method for remote operation and maintenance detection of a multi-refrigerator system according to an embodiment of the present invention, the method comprising:
step S101, state request information is sent to controllers of a plurality of refrigerators in a multi-refrigerator system respectively;
step S102, acquiring refrigerator state information of a plurality of moments in a first time period sent by a controller of each refrigerator, wherein the refrigerator state information comprises first temperature information and first refrigeration power of the refrigerator at each moment;
step S103, determining a first refrigerator with qualified temperature and a second refrigerator with unqualified temperature according to the first temperature information and the set temperature of each refrigerator;
step S104, a first test instruction is sent to a controller of the first refrigerator with qualified temperature, wherein the first test instruction is used for testing the temperature adjustment capability of the controller of the first refrigerator to the first refrigerator under the condition that the set temperature of the first refrigerator is changed;
Step S105, receiving second refrigeration power and second temperature information of a controller of the first refrigerator at a plurality of moments in a second time period sent by the first test instruction, and determining a regulation capacity score of the refrigeration power of the controller of the first refrigerator according to the second refrigeration power and the second temperature information;
step S106, a second test instruction is sent to the controller of the second refrigerator with unqualified temperature, wherein the second test instruction is used for testing the fault condition of the second refrigerator;
step S107, receiving third temperature information of a plurality of moments in a second time period sent by a controller of the second refrigerator in response to the second test instruction, and determining a fault condition score of the second refrigerator according to the third temperature information and the first temperature information;
and step S108, determining the operation and maintenance conditions of the multi-refrigerator system according to the adjustment capability scores and the fault condition scores.
According to the remote operation and maintenance detection method for the multi-refrigerator system, the first temperature information of each refrigerator can be obtained to judge whether the temperature of each refrigerator is qualified or not, classification tests are carried out, the first refrigerator with qualified temperature can be tested for the temperature adjusting capability, the second refrigerator with unqualified temperature can be tested for the fault condition, the operation and maintenance condition of the multi-refrigerator system can be obtained in a classified mode, the refrigerators needing to be maintained can be determined based on the operation and maintenance condition, and therefore convenience is brought to operation and maintenance work of the multi-refrigerator system.
According to one embodiment of the invention, the method can be performed by a central processor or server, which can be in communication with and send instructions to the controller of each refrigerator in a multiple refrigerator system, and can also receive information fed back by the controller of each refrigerator.
According to one embodiment of the present invention, in step S101, status request information may be sent to the controllers of the plurality of refrigerators, respectively, to obtain the status of each refrigerator, which may include the temperature of each refrigerator and the cooling power thereof.
According to an embodiment of the present invention, in step S102, the controller of each refrigerator may send, after receiving the status request information, first refrigerator status information of a plurality of times in a first time period after the time of receiving the status request information to the central processor or the server, where the duration of the first time period may be 10 minutes, 20 minutes, 30 minutes, or the like, and the time interval between the respective times in the first time period may be 10 seconds, 30 seconds, 1 minute, or the like. The refrigerator state information may include first temperature information and first cooling power of the inside of the refrigerator detected at various times, wherein the first temperature information of the refrigerator may be varied during a first period of time, and the first cooling power of each time may also be varied. The central processor or server may receive the first temperature information and the first cooling power at a plurality of times transmitted by the respective refrigerator.
According to one embodiment of the present invention, in step S103, after receiving the first temperature information and the first cooling power of each refrigerator at a plurality of moments, the central processor or the server may determine whether the temperature of each refrigerator is acceptable based on the first temperature information, and divide the plurality of refrigerators into a first refrigerator with acceptable temperature and a second refrigerator with unacceptable temperature.
According to one embodiment of the present invention, step S103 may include: respectively determining a first temperature difference between first temperature information of the last moment in a first time period of each refrigerator and the set temperature; if the first temperature difference is smaller than or equal to a preset temperature difference threshold value, determining the refrigerator as a first refrigerator with qualified temperature; and if the first temperature difference is larger than the preset temperature difference threshold, determining the refrigerator as a second refrigerator with unqualified temperature.
According to one embodiment of the invention, the temperature inside the refrigerator is controlled by the controller of the refrigerator, usually by detecting the temperature inside the refrigerator in real time, and controlling the refrigerating unit to refrigerate the inside of the refrigerator, so that the temperature inside the refrigerator is kept within a certain threshold range near the set temperature. Therefore, the first temperature information at the last moment in the first time period can be compared with the set temperature, if the first temperature difference of the first temperature information and the set temperature is not kept in the temperature difference threshold range, namely, is larger than the temperature difference threshold, the temperature of the refrigerator can be determined to be unqualified, otherwise, if the first temperature difference of the first temperature information and the set temperature is kept in the temperature difference threshold range, namely, is smaller than or equal to the preset temperature difference threshold, the temperature of the refrigerator can be determined to be qualified.
According to one embodiment of the invention, after the first refrigerator with qualified temperature and the second refrigerator with unqualified temperature are divided, the two refrigerators can be tested respectively. In step S104, the first refrigerator with qualified temperature may be tested, that is, a first test instruction is sent to the controller of the first refrigerator with qualified temperature, so as to test the adjusting capability of the controller of the first refrigerator to temperature. That is, although the first refrigerator is qualified in temperature at the time when the first time period ends, it is not determined that its temperature adjustment capability is equally qualified, that is, it is not determined whether the controller of the refrigerator can efficiently adjust the temperature inside the refrigerator to the vicinity of the modified set temperature in the case of changing the set temperature thereof, and thus, its temperature adjustment capability can be tested by the first test instruction. The first test instruction is used for modifying the set temperature of the first refrigerator to obtain the modified set temperature. After the set temperature is modified, the controller of the first refrigerator can change the refrigeration power to enable the temperature in the first refrigerator to reach the modified set temperature and keep the temperature near the modified set temperature. The temperature in the first refrigerator may or may not have been adjusted to about the modified set temperature during the second time period, and the first refrigerator is in the process of being adjusted during the second time period. In a second time period, the controller of the first refrigerator can send second refrigeration power and second temperature information of each moment in the second time period to the central processor or the server. The server may determine a conditioning capacity score based on the second cooling power and the second temperature information sent by the controller of each first cooler.
According to one embodiment of the present invention, step S105 includes: obtaining a first relation coefficient between the refrigeration power and the temperature change rate according to the second refrigeration power and the second temperature information; and determining the adjustment capability score according to the modified set temperature, the first relation coefficient, the second temperature information and the second refrigeration power. According to one embodiment of the present invention, the refrigeration power and the temperature change rate have a correlation, the greater the refrigeration power is, the greater the temperature change rate is, the faster the temperature drop speed is, the approximately linear relationship exists between the refrigeration power and the temperature change rate, and the first relationship coefficient between the refrigeration power and the temperature change rate can be determined.
According to one embodiment of the present invention, obtaining a first relationship coefficient between the cooling power and the temperature change rate according to the second cooling power and the second temperature information includes: according to the formula (1), constant temperature power for keeping the temperature in the xth first refrigerator unchanged is obtained；
（1）
Obtaining a first relation coefficient of the x first refrigerator according to the formula (2)， （2）
Wherein,for the second temperature information of the ith moment of the xth first refrigerator in the second time period,
For the second temperature information of the (i+1) th moment of the (x) th first refrigerator in the second time period,
for the second temperature information of the (i+2) th moment of the (x) th first refrigerator in the second time period,
for the second refrigeration power of the ith moment in the second time period of the xth first refrigerator,
for the second refrigeration power of the (i+1) th moment in the second time period of the (x) th first refrigerator,
for the second refrigeration power of the (i+2) th moment in the second time period of the (x) th first refrigerator,
for the number of moments in the second time period,
i andare all positive integers, the total number of the two is equal to the positive integer,
i≤。
according to one embodiment of the invention, the constant temperature power for keeping the temperature in the x first refrigerator unchanged can be first solved, and the temperature in the x first refrigerator cannot rise or fall under the action of the refrigerating power, namely, the temperature change rate is 0. And, there is a proportional relationship between the temperature change rate and the difference between the cooling power and the constant temperature power, i.e., the larger the difference between the cooling power and the constant temperature power is, the larger the temperature change rate is, and the faster the temperature drop speed is.
According to one embodiment of the present invention, the above proportional relationship can be utilized in solving the constant temperature power, for example, the average cooling power between the i-th time and the i+1-th time in the second period is The average temperature change rate between the i-th time and the i+1-th time in the second time period is，For the time interval between each instant, therefore, according to the above proportional relationship,and (3) withProportional to the ratio. Similarly, the average cooling power between the (i+1) th time and the (i+2) th time in the second period isThe average temperature change rate between the i-th time and the i+1-th time in the second time period isThus, according to the above proportional relationship,and (3) withProportional to the ratio. Based on the above proportional relationship, the following formula (3) can be obtained:
（3）
the arrangement can be represented by the following formula (4):
（4）
according to one embodiment of the invention, in order to improve the calculation accuracy of the constant temperature power, the second temperature information and the second refrigeration power at each moment can be substituted into the formula (4), and the average is carried out, so that the constant temperature power of the x first refrigerator solved by the formula (1) can be obtained.
According to an embodiment of the present invention, after the constant temperature power is obtained, the first relationship coefficient may be determined according to the above-described proportional relationship, that is, the first relationship coefficient is determined using a proportional relationship between a temperature change rate at each time and a difference between the cooling power and the constant temperature power, and since a time interval between each time is a constant value, the time interval may be included in the first relationship coefficient, so that the following proportional relationship (5) may be obtained:
（5）
That is, the ratio of the temperature change between the i-th time and the i+1th time and the difference between the average power and the constant temperature power between the i-th time and the i+1th time is used as the first relation coefficient. Further, in order to improve the accuracy of the first relationship coefficient, the second temperature information and the second refrigeration power at each moment may be substituted into the formula (5), and the average is performed, so that the first relationship coefficient solved by the formula (2) may be obtained.
In this way, the constant temperature power can be solved by utilizing the proportional relation between the temperature change rate and the difference value between the refrigeration power and the constant temperature power, and the second temperature information and the second refrigeration power at each moment, so that the calculation precision of the constant temperature power is improved, and further, the first relation coefficient with higher accuracy is obtained.
According to one embodiment of the invention, after determining the first relationship coefficient described above, a conditioning capacity score, i.e., a score for evaluating the temperature conditioning capacity of the first refrigerator, may be determined. Determining the turndown capability score based on the modified set temperature, the first relationship coefficient, the second temperature information, and the second refrigeration power, comprising: determining the regulatory capability score according to equation (6) ，
（6）
Wherein,for the modified set temperature of the xth first cooler,for the second temperature information of the last moment of the x first refrigerator in the second time period,in order to set the time threshold value in advance,for the time interval between each instant of time,for the upward rounding function, N is the number of the first refrigerators, x is less than or equal to N, and x and N are positive integers.
According to one embodiment of the present invention, in equation (6),the temperature difference between the modified set temperature and the second temperature information of the x first refrigerator at the last moment in the second time period is represented, the amplitude to be adjusted after the set temperature is modified is also represented,the average difference between the second cooling power and the constant temperature power at each moment in the second time period of the first refrigerator is represented,the average difference between the second cooling power and the constant temperature power may be represented as a temperature adjustment range in a single time interval, and thus, the ratio of the temperature adjustment range to the temperature adjustment range in the single time interval may represent the number of time intervals required for the temperature adjustment range to reach the temperature difference, which is not necessarily an integer, and thus, the ratio may be valued upward, and the temperature adjustment range may be made to reach the temperature difference. By multiplying the number of time intervals by the time interval, the time required for the temperature adjustment amplitude to reach the temperature difference can be obtained.
According to one embodiment of the present invention, the required time is different from the preset time threshold, and by comparing the difference result with the preset time threshold, a time difference that the required time exceeds the preset time threshold is obtained, and the higher the duty ratio in the preset time threshold, the higher the duty ratio, the lower the adjustment efficiency, the worse the adjustment capability, and conversely, the lower the duty ratio, the lower the time difference that the required time exceeds the preset time threshold, the higher the adjustment efficiency, and the stronger the adjustment capability. The difference between 1 and the duty ratio can be solved, and the adjustment capacity score of the x first refrigerator can be obtained, wherein the larger the difference is, the stronger the temperature adjustment capacity of the x first refrigerator is indicated. Further, an average value of the adjustment capability scores of the plurality of first refrigerators can be solved, and the adjustment capability scores can be obtained and can be used for evaluating the overall temperature adjustment capability of the plurality of first refrigerators.
According to an embodiment of the present invention, the preset time threshold may be positively correlated with a temperature difference between the set temperature after modification and the set temperature before modification, and the larger the temperature difference, the larger the amplitude of the temperature adjustment is, the larger the preset time threshold may be set to a value, whereas the smaller the temperature difference, the smaller the amplitude of the temperature adjustment is, the smaller the preset time threshold may be set to a value. The invention does not limit the setting mode of the preset time threshold.
In this way, the adjustment capacity score can be determined by determining the relation between the adjustment time required by each first refrigerator after the set temperature is modified and the preset time threshold, the temperature adjustment efficiency and the temperature adjustment capacity of the first refrigerator can be represented by the required adjustment time, and the accuracy and objectivity of the adjustment capacity score are improved.
According to an embodiment of the present invention, in step S106, a second test command may be sent to the controller of the second refrigerator with unqualified temperature, and in order to improve the test efficiency, the process of sending the second test command to the second refrigerator and the process of sending the first test command to the first refrigerator may be performed simultaneously, and the process of determining the adjustment capability score of the controller of the first refrigerator may also be performed simultaneously with the process of determining the fault condition score of the second refrigerator.
According to one embodiment of the present invention, the second test instruction is used to test the fault condition of the second refrigerator, where the temperature failure of the second refrigerator may be caused by insufficient temperature adjustment capability, or may be caused by other faults, and in order to determine the reason why the temperature failure of the second refrigerator is caused, the second test instruction is used to make the second refrigerator operate at the maximum cooling power in the second period of time, that is, in the case that the maximum cooling power is operated, in step S107, obtain the third temperature information of the second refrigerator at multiple times in the second period of time, so as to determine whether the reason why the temperature failure of the second refrigerator is caused by insufficient adjustment capability or has a fault.
According to one embodiment of the present invention, step S107 may include: determining the temperature regulation amplitude of each second refrigerator in a second time period according to the third temperature information; in the second refrigerator, determining a non-fault refrigerator with a temperature regulation amplitude greater than or equal to an amplitude threshold; determining a first ratio of the number of non-malfunctioning coolers to the number of second coolers; and determining a fault condition score of the second refrigerator according to the first proportion, the first refrigeration power of the non-fault refrigerator and the first temperature information.
According to one embodiment of the invention, the temperature adjustment amplitude of the second refrigerator in the second time period can be determined according to the third temperature information, for example, the temperature adjustment amplitude can be determined by using the difference between the third temperature information of the last moment of the second refrigerator in the second time period and the third temperature information of the first moment in the second time period. If the temperature adjustment amplitude is larger than or equal to the amplitude threshold value, the second refrigerator is indicated to have no fault, but the temperature adjustment capacity is poor due to the problem of the controller on the setting of the refrigerating power, so that the temperature adjustment amplitude is larger than or equal to the non-fault refrigerator of the second refrigerator, otherwise, if the temperature adjustment amplitude of the second refrigerator under the action of the maximum refrigerating power is still lower and is lower than the amplitude threshold value, the second refrigerator may have fault.
According to one embodiment of the invention, the ratio of the non-faulty refrigerator in all the second refrigerators, i.e. the first ratio, may be determined, and the fault condition score of the second refrigerator may be determined based on the first ratio, and the first temperature information of the non-faulty refrigerator in the first time period.
According to one embodiment of the invention, determining a fault condition score for the second refrigerator based on the first ratio and the non-fault refrigerator first temperature information comprises: determining a fault condition score for the second refrigerator according to equation (7)，
（7）
Wherein,for the first temperature information of the y-th non-faulty refrigerator at the first moment in the first time period,for the first temperature information of the last moment of the y-th non-fault refrigerator in the first time period,for the number of moments in the first time period,the set temperature for the y-th non-failure refrigerator,the number of the non-fault refrigerators is less than or equal to yAnd y andare all positive integers, the total number of the two is equal to the positive integer,is the first ratio.
According to one embodiment of the present invention, in equation (7),for the actual temperature regulation amplitude of the y-th non-malfunctioning refrigerator during the first time period,the temperature difference between the set temperature of the y-th non-fault refrigerator and the temperature at the first moment in the first time period can also represent ideal temperature regulation amplitude, the ratio between the actual temperature regulation amplitude and the ideal temperature regulation amplitude can be calculated, the approaching degree of the temperature regulation capacity of the y-th non-fault refrigerator and the ideal temperature regulation capacity can be determined, and the average value of the approaching degree of the temperature regulation capacity of a plurality of non-fault refrigerators and the ideal temperature regulation capacity can be solved, so that the average approaching degree of the temperature regulation capacity of the non-fault refrigerator and the ideal temperature regulation capacity can be determined. Multiplying the average closeness by a first ratio may then And determining the approaching degree of the integral temperature regulation capacity and the ideal temperature regulation capacity of the second refrigerator, wherein the approaching degree of the integral condition and the ideal condition without faults of the second refrigerator can be reflected by the fault condition score of the second refrigerator, the closer the fault condition score is to the fault-free state, and the lower the fault condition score is, the more serious the fault condition of the second refrigerator is.
In this way, under the condition that the second refrigerator is operated with the maximum power, whether the second refrigerator is faulty or not can be determined through the temperature regulation amplitude of the second refrigerator, the degree of approach of the temperature regulation capacity of the non-faulty refrigerator to the ideal temperature regulation capacity and the duty ratio of the non-faulty refrigerator are used to obtain the fault condition score so as to accurately reflect the degree of approach between the whole condition of the second refrigerator and the ideal condition without faults, and the accuracy and objectivity of the fault condition score can be improved.
According to one embodiment of the present invention, in step S108, the operation and maintenance conditions of the multi-refrigerator system may be determined based on the adjustment capability score of the cooling power of the first refrigerator and the fault condition score of the second refrigerator, for example, the adjustment capability score of the cooling power and the fault condition score may be weighted and summed to obtain the operation and maintenance condition score of the multi-refrigerator system, and the adjustment capability score and the fault condition score are weighted to be the number ratio of the first refrigerator and the number ratio of the second refrigerator in the multi-refrigerator system, respectively. The operation and maintenance condition score can be used for indicating the overall fault condition of the multi-refrigerator system, and if the operation and maintenance condition score is lower than a preset threshold value, the operation and maintenance condition score indicates that the overall operation condition of the multi-refrigerator system is worse, the faults are more, and large-scale maintenance is needed. The operating conditions of individual coolers in a multi-cooler system may also be determined based on parameters in the acquisition of the capacity score and the fault condition score. For example, the temperature conditioning capacity of each first cooler may be determined based on the conditioning capacity score of each first cooler, and parameters of its controller may be readjusted for first coolers with poorer temperature conditioning capacity so that these first coolers may be able to set more accurate refrigeration power when the set temperature changes. For another example, when the temperature adjustment amplitude of the second refrigerator over the second time period is determined, the refrigerator with the fault can be determined and overhauled, for example, the refrigerator set and the heat insulation assembly can be aligned for overhauling.
According to the remote operation and maintenance detection method for the multi-refrigerator system, the first temperature information of each refrigerator can be obtained to judge whether the temperature of each refrigerator is qualified or not, classification tests are carried out, the temperature-qualified first refrigerator can be tested for the temperature regulation capability, the temperature-unqualified second refrigerator can be tested for the fault condition, the operation and maintenance condition of the multi-refrigerator system can be obtained in a classified mode, the refrigerators needing to be maintained can be determined based on the operation and maintenance condition, and therefore convenience is brought to operation and maintenance work of the multi-refrigerator system. When the adjustment capacity score of the first refrigerator is determined, the constant temperature power can be solved by utilizing the proportional relation between the temperature change rate and the difference value between the refrigeration power and the constant temperature power, and the second temperature information and the second refrigeration power at each moment, so that the calculation precision of the constant temperature power is improved, and further, the first relation coefficient with higher accuracy is obtained. And the adjustment capacity score can be determined by determining the relation between the adjustment time required by each first refrigerator after the set temperature is modified and the preset time threshold, the temperature adjustment efficiency and the temperature adjustment capacity of the first refrigerator can be represented by the required adjustment time, and the accuracy and objectivity of the adjustment capacity score are improved. When determining the fault condition score of the second refrigerator, whether the second refrigerator is faulty or not can be determined through the temperature regulation amplitude of the second refrigerator under the condition that the second refrigerator is operated at the maximum power, and the fault condition score can be obtained by using the approach degree of the temperature regulation capacity of the non-faulty refrigerator and the ideal temperature regulation capacity and the duty ratio of the non-faulty refrigerator so as to accurately reflect the approach degree between the integral condition of the second refrigerator and the ideal condition without faults, so that the accuracy and objectivity of the fault condition score can be improved.
Fig. 2 schematically illustrates a block diagram of a multi-refrigerator system remote operation and maintenance detection system according to an embodiment of the present invention, the system comprising:
the state request module is used for respectively sending state request information to controllers of a plurality of refrigerators in the multi-refrigerator system;
the system comprises a state acquisition module, a control module and a control module, wherein the state acquisition module is used for acquiring refrigerator state information of a plurality of moments in a first time period sent by a controller of each refrigerator, and the refrigerator state information comprises first temperature information and first refrigeration power of the refrigerator at each moment;
the dividing module is used for determining a first refrigerator with qualified temperature and a second refrigerator with unqualified temperature according to the first temperature information and the set temperature of each refrigerator;
the first test module is used for sending a first test instruction to the controller of the first refrigerator with qualified temperature, wherein the first test instruction is used for testing the temperature regulation capacity of the controller of the first refrigerator to the first refrigerator under the condition that the set temperature of the first refrigerator is changed;
the adjustment capacity scoring module is used for receiving second refrigeration power and second temperature information of a plurality of moments in a second time period sent by the controller of the first refrigerator in response to the first test instruction, and determining adjustment capacity scores of the controller of the first refrigerator according to the second refrigeration power and the second temperature information;
The second test module is used for sending a second test instruction to the controller of the second refrigerator with unqualified temperature, wherein the second test instruction is used for testing the fault condition of the second refrigerator;
the fault condition scoring module is used for receiving third temperature information of a plurality of moments in a second time period sent by the controller of the second refrigerator in response to the second test instruction, and determining fault condition scores of the second refrigerator according to the third temperature information and the first temperature information;
and the operation and maintenance condition module is used for determining the operation and maintenance condition of the multi-refrigerator system according to the adjustment capacity score and the fault condition score.
According to an embodiment of the present invention, there is provided a multi-refrigerator system remote operation and maintenance detection apparatus including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to invoke the instructions stored by the memory to perform the multi-refrigerator system remote operation and maintenance detection method.
According to one embodiment of the present invention, a computer readable storage medium having stored thereon computer program instructions which when executed by a processor implement the multi-refrigerator system remote operation and maintenance detection method is provided.
The present invention may be a method, apparatus, system, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for performing various aspects of the present invention.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The remote operation and maintenance detection method for the multi-refrigerator system is characterized by comprising the following steps of:
respectively sending state request information to controllers of a plurality of refrigerators in the multi-refrigerator system;
acquiring refrigerator state information of a plurality of moments in a first time period sent by a controller of each refrigerator, wherein the refrigerator state information comprises first temperature information and first refrigeration power of the refrigerator at each moment;
determining a first refrigerator with qualified temperature and a second refrigerator with unqualified temperature according to the first temperature information and the set temperature of each refrigerator;
sending a first test instruction to a controller of the first refrigerator with qualified temperature, wherein the first test instruction is used for testing the temperature adjusting capacity of the controller of the first refrigerator to the first refrigerator under the condition that the set temperature of the first refrigerator is changed;
receiving second refrigeration power and second temperature information of a plurality of moments in a second time period sent by a controller of the first refrigerator in response to the first test instruction, and determining an adjustment capacity score of the controller of the first refrigerator according to the second refrigeration power and the second temperature information;
Sending a second test instruction to a controller of the second refrigerator with unqualified temperature, wherein the second test instruction is used for testing the fault condition of the second refrigerator;
receiving third temperature information of a plurality of moments in a second time period sent by a controller of the second refrigerator in response to the second test instruction, and determining a fault condition score of the second refrigerator according to the third temperature information and the first temperature information;
and determining the operation and maintenance conditions of the multi-refrigerator system according to the adjustment capability score and the fault condition score.
2. The method of claim 1, wherein determining a first refrigerator with a qualified temperature and a second refrigerator with a unqualified temperature according to the first temperature information and the set temperature of each refrigerator comprises:
respectively determining a first temperature difference between first temperature information of the last moment in a first time period of each refrigerator and the set temperature;
if the first temperature difference is smaller than or equal to a preset temperature difference threshold value, determining the refrigerator as a first refrigerator with qualified temperature;
and if the first temperature difference is larger than the preset temperature difference threshold, determining the refrigerator as a second refrigerator with unqualified temperature.
3. The method for detecting remote operation and maintenance of a multi-refrigerator system according to claim 1, wherein the first test instruction is used for modifying the set temperature of the first refrigerator to obtain the modified set temperature;
the method for determining the adjustment capacity score of the controller of the first refrigerator comprises the steps of:
obtaining a first relation coefficient between the refrigeration power and the temperature change rate according to the second refrigeration power and the second temperature information;
and determining the adjustment capability score according to the modified set temperature, the first relation coefficient, the second temperature information and the second refrigeration power.
4. The method of claim 3, wherein obtaining a first coefficient of relationship between refrigeration power and rate of temperature change based on the second refrigeration power and the second temperature information, comprises:
according to the formula
，
Obtaining constant temperature power for keeping the temperature in the xth first refrigerator unchanged；
According to the formula
，
Obtaining a first relation coefficient of the x first refrigeratorWherein->For the second temperature information of the (th) first refrigerator at the (th) moment in the second time period,/second temperature information of the (th) first refrigerator at the (th) moment in the second time period>For the second temperature information of the (i+1) th moment of the (x) th first refrigerator in the second time period,/second temperature information of the (x) th first refrigerator in the second time period>For the second temperature information of the (i+2) th moment of the (x) th first refrigerator in the second time period,/second temperature information of the (x) th first refrigerator in the second time period>For the second refrigeration power of the ith moment in the second time period of the xth first refrigerator,for the second refrigerating power of the (i+1) th moment in the second time period of the (x) th first refrigerator,/second refrigerating power of the (x) th first refrigerator>For the second refrigerating power of the (i+2) th moment in the second time period of the (x) th first refrigerator,/second refrigerating power of the (x) th first refrigerator>For the number of moments in the second time period i and +.>Are all positive integers, i is less than or equal to%>。
5. The multi-refrigerator system remote operation and maintenance detection method of claim 4, wherein determining the conditioning capacity score based on the modified set temperature, the first relationship coefficient, the second temperature information, and the second cooling power comprises:
according to the formula
，
Determining the regulatory capability scoreWherein- >For the modified set temperature of the xth first cooler,for the second temperature information of the last moment of the xth first refrigerator in the second time period,/second temperature information of the xth first refrigerator in the last moment in the second time period>For a preset time threshold, +.>For the time interval between each instant, +.>For the upward rounding function, N is the number of the first refrigerators, x is less than or equal to N, and x and N are positive integers.
6. The method of claim 1, wherein the second test instructions are configured to cause the second refrigerator to operate at maximum cooling power during the second time period,
the method for determining the fault condition score of the second refrigerator comprises the steps of:
determining the temperature regulation amplitude of each second refrigerator in a second time period according to the third temperature information;
in the second refrigerator, determining a non-fault refrigerator with a temperature regulation amplitude greater than or equal to an amplitude threshold;
determining a first ratio of the number of non-malfunctioning coolers to the number of second coolers;
And determining a fault condition score of the second refrigerator according to the first proportion and the first temperature information of the non-fault refrigerator.
7. The method of claim 6, wherein determining a fault condition score for the second refrigerator based on the first ratio and the non-fault refrigerator first temperature information comprises:
according to the formula
，
Determining a fault condition score for the second refrigeratorWherein->For the first temperature information of the y-th non-faulty refrigerator at the first moment in the first time period,/for the first time period of the first time period>For the first temperature information of the y-th non-faulty refrigerator at the last moment in the first time period,/for the first time period>For the number of moments in the first time period, is->Setting temperature for the y-th non-fault refrigerator, < >>Is the number of the non-fault refrigerators, y is less than or equal to%>And y and->Are all positive integers, & gt>Is the first ratio.
8. A multi-freezer system remote operation and maintenance detection system, comprising:
the state request module is used for respectively sending state request information to controllers of a plurality of refrigerators in the multi-refrigerator system;
the system comprises a state acquisition module, a control module and a control module, wherein the state acquisition module is used for acquiring refrigerator state information of a plurality of moments in a first time period sent by a controller of each refrigerator, and the refrigerator state information comprises first temperature information and first refrigeration power of the refrigerator at each moment;
The dividing module is used for determining a first refrigerator with qualified temperature and a second refrigerator with unqualified temperature according to the first temperature information and the set temperature of each refrigerator;
the first test module is used for sending a first test instruction to the controller of the first refrigerator with qualified temperature, wherein the first test instruction is used for testing the temperature regulation capacity of the controller of the first refrigerator to the first refrigerator under the condition that the set temperature of the first refrigerator is changed;
the adjustment capacity scoring module is used for receiving second refrigeration power and second temperature information of a plurality of moments in a second time period sent by the controller of the first refrigerator in response to the first test instruction, and determining adjustment capacity scores of the controller of the first refrigerator according to the second refrigeration power and the second temperature information;
the second test module is used for sending a second test instruction to the controller of the second refrigerator with unqualified temperature, wherein the second test instruction is used for testing the fault condition of the second refrigerator;
the fault condition scoring module is used for receiving third temperature information of a plurality of moments in a second time period sent by the controller of the second refrigerator in response to the second test instruction, and determining fault condition scores of the second refrigerator according to the third temperature information and the first temperature information;
And the operation and maintenance condition module is used for determining the operation and maintenance condition of the multi-refrigerator system according to the adjustment capacity score and the fault condition score.
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