RU2832250C1 - Method and system for synergetic remote calibration of vehicles in several locations - Google Patents

Abstract

FIELD: vehicles; physics.

SUBSTANCE: invention relates to systems for synergetic remote calibration of vehicles. System comprises a server configured to store a calibration database and receive and store a calibration signal from the transponder, requestor configured to call the calibration signal from the server to read the value of the calibration signal and/or send a command to write the calibration signal to the server and send the command to the server to read the recorded calibration signal, transponder configured to send a calibration signal to the server and further configured to receive the recorded target value from the server and perform online calibration of the vehicle.

EFFECT: high accuracy of remote calibration of vehicles in several locations.

14 cl, 6 dwg

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is based on and claims priority from Chinese Patent Application No. 2023112393443, filed September 22, 2023, and U.S. Patent No. 18/243,744, filed September 8, 2023, the entire contents of which are incorporated herein by reference.

AREA OF TECHNOLOGY

[0002] The present invention relates to the field of software development technologies for vehicles and, in particular, to a method and system for synergistic remote calibration of vehicles in multiple locations.

LEVEL OF TECHNOLOGY

[0003] The inventor knows from the prior art that the automatic function of the calibration system is limited to only one computer, and the user needs to write his own program to automatically calibrate the local electronic control unit (ECU). But in the scenario of calibrating multiple vehicles, it is necessary to access the ECU connected to the remote system to remotely deploy the local calibration data, or when the remote monitoring calibration data is obtained, the current native program cannot achieve this goal, and another program must be written to access the remote ECU. In addition, the two programs cannot achieve data fusion.

ESSENCE OF THE INVENTION

[0004] The present invention relates to a method and system for synergistic remote calibration of vehicles at multiple locations.

[0005] In a first aspect, a method is provided for synergistically remotely calibrating vehicles at multiple locations, comprising:

[0006] server, requester and responder; in this case

[0007] the server stores the calibration database, receives and stores the calibration signal from the transponder;

[0008] the requestor calls the calibration signal from the server to read the value of the calibration signal; and/or

[0009] the interrogator sends a calibration signal recording command to the server to send the recorded target value to the responder through the server, and the responder completes the online calibration of the vehicle, and the interrogator reads the recorded calibration signal by accessing the server;

[0010] the requestor creates a corresponding display system variable for each server calibration signal;

[0011] the initial value is assigned to the variables of the display system, while

[0012] the method for calling a calibration signal from a server by a requester to read a value of the calibration signal includes:

[0013] for a calibration signal defined as an observation variable, receiving by the calibration module in the requestor a value of the calibration signal stored on the server and storing the value of the calibration signal in a corresponding variable of the display system;

[0014] when reading a display system variable, reading the last stored value of the display system variable; and/or

[0015] sending by the requester a command to record the calibration signal to the server, and sending to the server a command to read the recorded calibration signal includes:

[0016] for a calibration signal defined as a calibration variable, associating by the requestor a destination function with an asynchronous function, wherein the destination function is a function for writing a variable of the display system of the target value to be written;

[0017] When writing a calibration variable, sending a write command and a read command to the server using an asynchronous function, and then returning immediately, completing the call to the asynchronous function.

[0018] In a preferred embodiment of the method, sending by the requester a command to record the calibration signal to the server and sending to the server a command to read the recorded calibration signal further includes:

[0019] for a calibration signal defined as a recordable observation variable, associating by the interrogator a destination function with an asynchronous function, wherein the destination function is a recording function of a display system variable of a target value to be recorded;

[0020] when writing a writable observation variable, sending a write command and a read command to the server using an asynchronous function, and then returning immediately, whereby the asynchronous function call is completed.

[0021] In another preferred embodiment of the method, when the server successfully executes the write command and the read command simultaneously, the requestor updates the last stored value of the display system variable to the target value to be written and sends the written target value to the server.

[0022] In another preferred embodiment of the method, the requestor is further applicable for batch changing the values of the display system variables using a wildcard; and

[0023] updating codes by means of a wildcard in the graphical program of the requestor and sending the current result of the graphical program to at least one responder via the server.

[0024] In a second aspect, a server is provided that is configured to perform the method of synergistic remote calibration of vehicles in multiple locations according to the first aspect, wherein

[0025] the server is configured to store a calibration database, receive and store a calibration signal from the responder, and send a target value recorded by the requester to the responder.

[0026] A third aspect provides a method for operating a requester in a process of synergistic remote calibration of vehicles at multiple locations, comprising:

[0027] calling the calibration signal requester from the server to read the value of the calibration signal; and/or

[0028] sending by the requester to the server a command to record the calibration signal and sending to the server a command to read the recorded calibration signal;

[0029] the requestor creates a corresponding display system variable for each server calibration signal;

[0030] the initial value is assigned to the variables of the display system;

[0031] a method for a requester to call a calibration signal from a server to read a value of the calibration signal includes:

[0032] for a calibration signal defined as an observation variable, receiving by the calibration module in the requestor a value of the calibration signal stored on the server and storing the value of the calibration signal in a corresponding variable of the display system;

[0033] when reading a display system variable, reading the last stored value of the display system variable; and/or

[0034] the requestor creates a corresponding display system variable for each server calibration signal;

[0035] the initial value is assigned to the variables of the display system;

[0036] sending by the requester to the server a command to record the calibration signal and sending to the server a command to read the recorded calibration signal includes:

[0037] for a calibration signal defined as a calibration variable, associating by the requestor a destination function with an asynchronous function, wherein the destination function is a function for writing a variable of the display system of the target value to be written;

[0038] when writing a calibration variable, sending a write command and a read command to the server using an asynchronous function, and then returning immediately, whereby the asynchronous function call is completed.

[0039] In a preferred embodiment of the method, the requestor creates a corresponding display system variable for each server calibration signal;

[0040] the initial value is assigned to the variables of the display system;

[0041] sending by the requester to the server a command to record the calibration signal and sending to the server a command to read the recorded calibration signal includes:

[0042] for a calibration signal defined as a recordable observation variable, associating by the interrogator a destination function with an asynchronous function, wherein the destination function is a recording function of a display system variable of a target value to be recorded;

[0043] when writing a writable observation variable, sending a write command and a read command to the server using an asynchronous function, and then returning immediately, whereby the asynchronous function call is completed.

[0044] In another preferred embodiment of the method, the requestor is connected to the server such that when the server successfully executes a write command and a read command simultaneously, the requestor updates the last stored value of the display system variable to the target value to be written.

[0045] In another preferred embodiment of the method, in response to the requestor failing to receive the calibration signal from the server, if the requestor is still recording the display system variable corresponding to the calibration signal, the requestor reports an error.

[0046] In a fourth aspect, a computer device of a requester is provided for requesting a calibration signal from a server for reading a value of the calibration signal, configured to execute programs for implementing the method of operating the requester in the process of synergistic remote calibration of vehicles in multiple locations according to the third aspect.

[0047] In a fifth aspect, a respondent computer device is provided for completing an online calibration of a vehicle, configured to perform the method of synergistic remote calibration of vehicles at multiple locations according to the first aspect, wherein the respondent comprises:

[0048] a computing device and a bus adapter, wherein

[0049] the computing device is configured to send a calibration signal to the server and receive a recorded target value from the server;

[0050] the bus adapter is configured to read a calibration signal from an electronic control unit (ECU) and is further configured to distribute a target value to the ECU to complete a corresponding online calibration of the vehicle.

[0051] In a sixth aspect, a machine-readable storage medium is provided that stores machine-readable instructions, wherein the machine-readable instructions are executed by at least one processor to perform the operating method according to the third aspect.

[0052] In a seventh aspect, a system for synergistic remote calibration of vehicles in multiple locations is provided comprising:

[0053] a server configured to store a calibration database and to receive and store a calibration signal from a responder;

[0054] a requestor configured to call a calibration signal from a server to read a value of the calibration signal; and/or send a command to record the calibration signal to the server and send a command to the server to read the recorded calibration signal;

[0055] a responder configured to send a calibration signal to a server and further configured to receive a recorded target value from the server and perform an online calibration of the vehicle.

[0056] In a preferred embodiment of the system, the requestor creates a corresponding display system variable for each server calibration signal;

[0057] the initial value is assigned to the variables of the display system;

[0058] the method for calling a calibration signal from a server by a requester to read a value of the calibration signal includes:

[0059] for a calibration signal defined as an observation variable, receiving by the calibration module in the requestor a value of the calibration signal stored on the server and storing the value of the calibration signal in a corresponding variable of the display system;

[0060] when reading a display system variable, reading the last stored value of the display system variable; and/or

[0061] the requestor creates a corresponding display system variable for each server calibration signal;

[0062] the initial value is assigned to the variables of the display system;

[0063] sending by the requester a command to record the calibration signal to the server and sending to the server a command to read the recorded calibration signal includes:

[0064] for a calibration signal defined as a calibration variable, associating by the requestor a destination function with an asynchronous function, wherein the destination function is a function for writing a variable of the display system of the target value to be written;

[0065] when writing a calibration variable, sending a write command and a read command to the server using an asynchronous function, and then returning immediately, whereby the asynchronous function call is completed; and/or

[0066] the requestor creates a corresponding display system variable for each server calibration signal;

[0067] the initial value is assigned to the variables of the display system;

[0068] sending by the requester a command to record the calibration signal to the server and sending to the server a command to read the recorded calibration signal further includes:

[0069] for a calibration signal defined as a recordable observation variable, associating by the interrogator a destination function with an asynchronous function, wherein the destination function is a recording function of a display system variable of a target value to be recorded;

[0070] when writing a writable observation variable, sending a write command and a read command to the server using an asynchronous function, and then returning immediately, whereby the asynchronous function call is completed.

[0071] The purpose of the present disclosure is to provide brief descriptions of the subject matter of the disclosure. It should therefore be understood that the above features are merely illustrative and should not be interpreted as limiting in any way the scope or spirit of the subject matter of the disclosure.

[0072] Other features, aspects and advantages of the subject matter of the present disclosure will become apparent from the specific embodiments, the drawings and the claims.

BRIEF DESCRIPTION OF GRAPHIC MATERIALS

[0073] In order to more clearly describe the technical solutions in specific embodiments of the present invention or in the prior art, the following will briefly present the drawings necessary for the descriptions of the specific embodiments or the prior art. It is obvious that the following drawings represent some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0074] Fig. 1 is a schematic diagram illustrating the steps of a method for synergistic remote calibration of vehicles at multiple locations according to some embodiments of the present invention.

[0075] Fig. 2 is a schematic diagram illustrating the steps of a method for synergistic remote calibration of vehicles at multiple locations according to some embodiments of the present invention.

[0076] Fig. 3 is a schematic block diagram illustrating a server according to some embodiments of the present invention.

[0077] Fig. 4 is a schematic block diagram illustrating an interrogator according to some embodiments of the present invention.

[0078] Fig. 5 is a schematic block diagram illustrating a transponder according to some embodiments of the present invention.

[0079] Fig. 6 is a schematic block diagram illustrating a system for synergistic remote calibration of vehicles at multiple locations according to some embodiments of the present invention.

DETAILED DESCRIPTION OF IMPLEMENTATION OPTIONS

[0080] In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions according to the present invention will be clearly and completely described below in combination with drawings. It is obvious that the embodiments described herein are some embodiments of the present invention, not all embodiments. All other embodiments obtained by persons skilled in the art based on these embodiments in the present invention without creative efforts shall be within the scope of legal protection of the present invention.

[0081] It is already known in the invention that in the scenario of calibration of several vehicles, the vehicles are usually distributed among different cities. Under the corresponding technical conditions, it is impossible to drag the same calibration signals in vehicles located in different places into the same curve window for observation, nor to repeat the operation of the algorithm program in vehicles in other cities by directly running the algorithm program on the local developer's computer, and simultaneously copy the algorithm program to the developer's computers in other cities for execution by developers in other cities. In other words, software products of the same type can only provide local monitoring of the ECU and cannot provide simultaneous monitoring and interaction of the ECU of the local computer and the ECU connected to remote computers.

[0082] One or more embodiments provide a method for synergistic remote calibration of vehicles at multiple locations. Various non-limiting implementations of embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0083] As shown in Fig. 1, at least one embodiment provides a method for synergistic remote calibration of vehicles at multiple locations, including:

[0084] server, requester and responder; wherein

[0085] in step S101, the server stores the calibration database, receives and stores the calibration signal from the transponder; and

[0086] in step S102, the interrogator calls a calibration signal from the server to read a value of the calibration signal; and/or after recording the calibration signal, the interrogator sends the recorded target value to the responder through the server, and the responder completes the online calibration of the vehicle, and the interrogator reads the recorded calibration signal by accessing the server.

[0087] In some applicable embodiments, the responder refers to computers connected to the ECU of the vehicle in different cities, and the interrogator refers to a computer locally connected to the ECU of the vehicle. Each responder can be used to send a calibration signal to the server. The interrogator creates a corresponding display system variable for each calibration signal of the server; and an initial value is assigned to the display system variables. Subsequently, by simply reading or changing and writing the corresponding calibration signal on the interrogator, developers can ensure that the calibration signal values of the vehicle in different cities are monitored or synchronously changed based on the calibration signals of the vehicle distributed in different cities, thereby effectively improving the convenience and accuracy of calibration of multiple vehicles.

[0088] The calibration database is configured to store at least all calibration signals of the corresponding ECU of each transponder, including a calibration signal of the observation variable, a calibration signal of the recorded observation variable, and a calibration signal of the calibration variable.

[0089] As shown in Fig. 2, in some embodiments, a method for synergistic remote calibration of vehicles at multiple locations includes the following steps.

[0090] In step S201, the requestor calls a calibration signal from the server to read a value of the calibration signal; and/or sends a command to write the calibration signal to the server and sends a command to the server to read the recorded calibration signal.

[0091] In step S202, the responder sends a calibration signal to the server and further receives a recorded target value from the server and performs online calibration of the vehicle.

[0092] Below, a method for synergistic remote calibration of vehicles at multiple locations will be described in detail, combined with some application examples.

[0093] For example, in a three-vehicle calibration scenario, the vehicles are distributed across three different cities. The computer used for calibration in city A is defined as a requester, and the computers connected to ECU1 and ECU2 of the vehicle in the other two cities are defined as responders.

[0094] The developer in city A first performs local calibration. The developer creates display system variables of the same name "ECU_Factor1" and "ECU_Factor2" associated with the calibration signals "Factor1" and "Factor2" in the local ECU of the vehicle, and then, by writing a graphical program, sequentially changes "Factor1" and "Factor2" until the result of executing the algorithm corresponds to the desired one. For example, "Factor1=1.2" and "Factor2=2.3", where Factor1 is the calibration signal of the wheel speed sensor, and Factor2 is the calibration signal of the acceleration sensor. Each ECU includes two calibration signals Factor1 and Factor2.

[0095] A developer in city A wants to run the same graphics program in the ECU of vehicles in other cities to repeat the execution of the algorithm. If this embodiment is not used, it is impossible to repeat the process of executing the algorithm on vehicles in other cities by directly running the graphics program in the computer of the developer in city A. It is usually necessary to copy the graphics program to the computers of developers in other cities at the same time for execution by developers in other cities. In a method for synergistic remote calibration of vehicles in multiple locations, the above problem can be solved directly by creating a corresponding display system variable for each calibration signal through a interrogator.

[0096] The specific steps are as follows:

[0097] (1) The computer used for calibration in city A is used as a interrogator, and therefore the developer in city A allows the calibration module on the local computer to be connected to the transponders in other cities at the same time through the server to connect to ECU1 and ECU2 of the vehicles in other cities, and thus one interrogator connects to multiple transponders at the same time. The transponders in other cities can send calibration signals of ECU1 and ECU2 to the server.

[0098] (2) After the local computer in city A successfully connects to ECU1 and ECU2 of the vehicle in other cities, the calibration module in the local computer locally and automatically creates display system variables “ECU1_Factor1”, “ECU1_Factor2” and “ECU2_Factor1”, “ECU2_Factor2” for the corresponding calibration signals of ECU1 and ECU2 stored on the server.

[0099] (3) The developer in city A uses a wildcard to update the codes in the graphical program of the local computer (the interrogator), namely, "ECU*_Factor1=1,2", "ECU*_Factor2=2,3". Then, the graphical program is started, and the server sends the result of the graphical program to ECU1 and ECU2 of the vehicle in other cities through the corresponding transponders, respectively, that is, the corresponding calibration signals Factor1 in ECU1 and ECU2 are changed to 1,2, and the corresponding calibration signals Factor2 are changed to 2,3. In this way, the requirements of the developer in city A can be satisfied: updating the codes using the wildcard in the graphical program of the interrogator and sending the current result of the graphical program to at least one transponder through the server.

[00100] It should be noted that in some embodiments, the wildcard character refers to a special character used to match a character string with a predetermined mode. When the values of the display system variables are changed in batches, one batch of display system variables can be quickly matched by using the wildcard character to perform the batch change. As an example, consider ECU*_Factor, where * is a wildcard character that can match any character or character string. Thus, ECU*_Factor can correspond to the display system variable ECU1_Factor, the display system variable ECU2_Factor, and the display system variable ECU3_Factor, etc. A predetermined naming rule for display system variables can be followed if their prefix is ECU and their suffix is Factor.

[00101] The method of batch changing the data includes: replacing the wildcard with a specific character string. For example, if all the values of the ECU1_Factor, ECU2_Factor, ECU3_Factor, etc. display system variables are changed to 1.5, it is only necessary to replace ECU*_Factor with 1.5. In this way, the values of these display system variables can be changed in batch.

[00102] For example, in a four-vehicle calibration scenario, the vehicles are distributed across four different cities. The computer used for calibration in city A is defined as a requester, and the computers connected to ECU1, ECU2, and ECU3 of the vehicle in the other three cities are defined as responders.

[00103] The developer in city A first performs a local calibration. The developer creates display system variables with the same name ECU_Result1, associated with the measurement signal Result1 in the local vehicle ECU, and drags them into the curve window for monitoring. The corresponding parameter values are adjusted using the calibration module, and the monitored signal Rsult1 is evaluated to confirm the plausibility of the adjusted parameters.

[00104] After completing the local calibration, the developer in city A publishes the current version of the ECU algorithm and updates the ECU algorithms of other cities to the current version via the server.

[00105] Subsequently, the developer in city A also wants to evaluate the operating conditions of the algorithm under various conditions of other cities by monitoring the Result1 signal in the ECU of each vehicle in other cities. If this embodiment is not used, it is impossible to drag signals with the same Result1 name in vehicles in several locations into the same curve window for observation.

[00106] In a method for synergistic remote calibration of vehicles at multiple locations, provided by some embodiments, by creating a corresponding display system variable for each calibration signal of the server via a responder, signals with the same name Result1 of different ECUs can be dragged into the same curve window for observation. A specific method is described below.

[00107] (1) A computer used for calibration in city A is used as a interrogator. The developer in city A allows the calibration module on the local computer (i.e., interrogator) to successfully connect with the responders in other cities at the same time, so as to connect with ECU1, ECU2, ECU3 of the vehicle in other cities. In this way, one interrogator connects to multiple responders at the same time. The responders in other cities can send calibration signals of ECU1, ECU2, and ECU3 to the server.

[00108] (2) After the local computer in city A successfully connects to ECU1, ECU2 and ECU3 of the vehicle in other cities, the calibration module in the local computer locally and automatically creates system mapping variables "ECU1_Result1", "ECU2_Result1" and "ECU3_Result1" for the corresponding calibration signals of ECU1, ECU2 and ECU3 stored on the server, wherein Result1 represents the external environment temperature of the vehicle acquired by the vehicle sensor through monitoring. Therefore, "ECU1_Result1", "ECU2_Result1" and "ECU3_Result1" represent the external environment temperature of the respective vehicles acquired by ECU1, ECU2 and ECU3 through monitoring.

[00109] (3) The developer in city A can simultaneously monitor the three display system variables "ECU1_Result1", "ECU2_Result1", and "ECU3_Result1" by locally dragging them into the same curve window. In this way, the performance of the current algorithm in other cities can be assessed based on the monitoring results.

[00110] In some embodiments, the naming rule for automatically created display system variables is as follows:

[00111] The calibration signal name and the ECU name are separated by an underscore, and the ECU name is used as a prefix. For example, if the calibration signal name is "abc" and the ECU name is "ABS", the display system variable name will be "ABS_abc".

[00112] In some embodiments, the requestor calls the calibration signal from the server to read the value of the calibration signal, which includes:

[00113] for a calibration signal defined as an observation variable, receiving by the calibration module a value of the calibration signal stored on the server, storing this value of the calibration signal in a corresponding variable of the display system;

[00114] when reading a display system variable, reading the last stored value of the display system variable.

[00115] After creating each display system variable, the calibration module in the requestor first connects to the local ECU via the server to read the current value of each calibration signal from the local ECU (the value at the time of a successful connection to the ECU), and assigns each current value to the corresponding display system variable, thereby assigning an initial value to each display system variable.

[00116] Since the calibration module reads the value of the calibration signal stored on the server in real time and stores this value in the corresponding display variable, it is guaranteed that the value of the display variables is always the latest value. If the user wants to read the latest value of the calibration signal, he only needs to read the latest value of the display variable, i.e. the latest stored value of the display variable. The latest storage time point refers to the time stamp of the moment when the calibration module reads the value of the calibration signal for the last time.

[00117] A method for reading a calibration signal defined as an observation variable will be described in detail with the following examples.

[00118] When functionally testing the vehicle ECU connected to the transponder, using the interrogator's graphical program, it is determined whether the KL30 signal of the vehicle ECU supply voltage exceeds 9 V.

[00119] First, the responder sends the ECU power supply voltage signal KL30 to the server in advance for storage, and then the calibration module of the interrogator calls the server's calibration database and automatically creates a display system variable "ECU_KL30" for the power supply voltage signal in the calibration database.

[00120] The user writes a graphical program for determining the supply voltage signal on the interrogator, where the execution unit expression corresponding to the determination is "ECU_KL30 >9".

[00121] Then the user starts the test, and the interrogator calibration module connects to the responder ECU via the server to read the current value of the KL30 signal in the ECU and assigns this value to the display system variable "ECU_KL30". Thus, the initial value is assigned to the display system variable "ECU_KL30".

[00122] The calibration module then periodically reads the KL30 signal value via polling or DAQ and stores the value in the display system variable "ECU_KL30".

[00123] Finally, when the execution unit for executing the user graphics program is "ECU_KL30 >9", the value of the display system variable "ECU_KL30" is read directly and then compared with 9.

[00124] In one embodiment, a method of recording a calibration signal includes:

[00125] for a calibration signal defined as a calibration variable, associating by the requestor a destination function with an asynchronous function, where the destination function is a function for writing a variable of the display system of the target value to be written;

[00126] when writing a calibration variable, sending a write command and a read command to the server using an asynchronous function, and then returning immediately, whereby the asynchronous function call is completed.

[00127] A method for recording a calibration signal defined as a calibration variable will be described in detail with the following examples.

[00128] When performing a functional test of the vehicle ECU connected to the transponder, it is necessary to use the interrogator's graphic program to record the value of the vehicle ECU calibration signal EV_Current as 2.1 in order to set the current of the corresponding EV solenoid valve to 2.1 A.

[00129] First, the responder sends the ECU solenoid valve current signal EV_Current to the server in advance for storage, and then the calibration module of the interrogator calls the server's calibration database and automatically creates a display system variable "ECU_EV_Current" for the solenoid valve current signal in the calibration database.

[00130] The user writes a graphical program to write the value of the calibration signal EV_Current as 2.1 to the interrogator, wherein the execution block expression corresponding to the write operation is "ECU_EV_Current = 2.1".

[00131] Then the user starts the test, and the interrogator calibration module connects to the responder ECU via the server and links the function of assigning the display system variable "ECU_EV_Current" to the asynchronous function "set_sys_var_async". The function of the asynchronous function is to call the API function of the responder calibration module to perform the write and read operations of the solenoid valve current signal.

[00132] When the execution unit for the execution of the requestor graphics program is "ECU_EV_Current = 2.1", the requestor calibration module can call this asynchronous function "set_sys_var_async" to enter the target value "2.1" as a parameter. In this asynchronous function, the following requests are initiated sequentially and asynchronously:

[00133] (1) a request to write the calibration signal "ECU_EV_Current", where the request carries a parameter with a write value of 2.1; and

[00134] (2) request to read the calibration signal "ECU_EV_Current".

[00135] After the executive module initiates a request, there is no need to wait for the result of the request, and it returns immediately from the asynchronous function "set_sys_var_async". The calibration module of the interrogator sequentially writes the calibration signals "ECU_EV_Current" in the background and sends the written target value to the responder via the server, and thus the responder writes the target value. As a result, the value of EV_Current in the ECU changes to 2.1, and the calibration module of the interrogator reads the calibration signal "ECU_EV_Current" by accessing the server.

[00136] In another embodiment, a method of recording a calibration signal includes:

[00137] for a calibration signal defined as a recordable observation variable, associating by the requestor a destination function with an asynchronous function, where the destination function is a recording function of a display system variable of a target value to be recorded;

[00138] when writing a writable observation variable, sending a write command and a read command to the server using an asynchronous function, and then returning immediately, whereby the asynchronous function call is completed.

[00139] A method for recording a calibration signal defined as a recorded observation variable will be described in detail with the following examples.

[00140] When functionally testing the vehicle ECU connected to the transponder, it is necessary to use the interrogator's graphical program to write the value of the vehicle ECU calibration signal EV_MAX_Current as 1.0 in order to set the maximum sampling current of the corresponding EV solenoid valve to 1.0 amperes.

[00141] First, the responder sends the maximum current signal EV_Current of the ECU solenoid valve sampling to the server in advance for storage, and then the calibration module of the interrogator calls the calibration database of the server and automatically creates a variable "ECU_EV_MAX_Current" of the display system for the maximum current signal of the solenoid valve sampling in the calibration database.

[00142] The user writes a graphical program to write the maximum current value of the solenoid valve sample as 1.0, where the execution unit expression corresponding to the write operation is "ECU_EV_MAX_Current = 1.0".

[00143] The user then starts the test, and the interrogator calibration module connects to the responder ECU via the server to read the current value of the EV_MAX_Current signal in the ECU and assigns the current value to the display system variable "ECU_EV_MAX_Current".

[00144] The interrogator calibration module then periodically reads the EV_MAX_Current signal value via polling or DAQ and stores the value in the display system variable "ECU_EV_MAX_Current".

[00145] For example, during the testing process, the ECU detects that the maximum sampling current of the EV solenoid valve is 3.0 A, then the value of the display system variable "ECU_EV_MAX_Current" is rewritten as 3.0.

[00146] The calibration module of the interrogator also couples the function of assigning the variable "ECU_EV_MAX_Current" of the display system to the asynchronous function "set_sys_var_async", where the function of the asynchronous function is to call the API function of the calibration module to perform write and read operations with respect to the maximum current signal of the EV solenoid valve sample.

[00147] When the execution unit for the execution of the requester graphics program is "ECU_EV_MAX_Current = 1.0", the requester calibration module can call this asynchronous function "set_sys_var_async" and enter the target value "1.0" as a parameter. In this asynchronous function, the following requests are initiated sequentially and asynchronously:

[00148] (1) a request to write the calibration signal "ECU_EV_MAX_Current", where the request carries a parameter with a write value of 1.0;

[00149] (2) Request to read the calibration signal "ECU_EV_MAX_Current".

[00150] After the executive module initiates a request, there is no need to wait for the result of the request, and it returns immediately from the asynchronous function "set_sys_var_async". The calibration module of the interrogator sequentially writes the calibration signals "ECU_EV_MAX_Current" in the background and sends the written target value to the responder via the server, and thus the responder writes the target value. As a result, the value of EV_MAX_Current in the ECU changes to 1.0, and the calibration module of the interrogator reads the calibration signal "ECU_EV_MAX_Current" by accessing the server.

[00151] In the subsequent testing process, the value of the EV_MAX_Current signal in the ECU is reset to 1.0. Only when the ECU detects that the maximum EV valve current exceeds this value, the values of the EV_MAX_Current signal and the display system variable "ECU_EV_MAX_Current" can be overwritten.

[00152] It should be further noted that the calibration signal EV_MAX_Current refers to the maximum sampling current value of the EV solenoid valve selected and calculated in the ECU. For example, the initial value of "EV_MAX_Current" is 1.0. If the current sampling current is always 0.5 A, the value of "EV_MAX_Current" remains 1.0. When the current sampling current exceeds 1.0 A, for example, the current sampling current value is 1.2, the value of "EV_MAX_Current" will immediately change to 1.2. At this time, even if the current current value decreases to 0.2 A, "EV_MAX_Current", which represents the historical value of the maximum sampling current, will still remain 1.2 without any decrease. In this way, the calibration signal becomes a bidirectional read and write signal, and thus the ECU can increase it based on the actual current value obtained by sampling, and the user can also reset the calibration signal to a lower value on the use side, wherein the advantage is that the user can read the maximum value of the calibration signal at different times without encountering the case that the calibration signal increases to 3.0 from the beginning, causing the subsequent observation of the calibration signal to fall into a blind spot due to the lack of reset capability, and therefore having to read the value of 3.0 constantly. Therefore, in this case, the value of the EV_MAX_Current signal in the ECU is reset to 1.0, and the values of the EV_MAX_Current calibration signal and the display system variable "EV_MAX_Current" can be overwritten only when the ECU detects that the maximum EV current exceeds this value.

[00153] In some embodiments, when the server successfully executes a write command and a read command simultaneously, the requestor updates the last stored value of the display system variable to the target value to be written.

[00154] In some embodiments, the observation variable calibration signal refers to a calibration signal solely for observation, such as an engine rotation signal, a vehicle speed signal, etc. These signals are determined based on measurements of relevant information about the physical world and may reflect objective facts that do not require change.

[00155] In some embodiments, the calibration signal of the calibration variable relates to a parameter that needs to be set, such as the P, I, and D parameters in a PID algorithm, which can determine the operating state of the algorithm after modification.

[00156] In some embodiments, the calibration signal of the recorded observation variable refers to a signal used for observation or affecting the observation value. For example, signals such as the maximum value of the solenoid valve current may continuously increase to the maximum value as the observation progresses. For example, if it is necessary to observe the maximum value within two hours from the current time, the observation value is reset and read for two hours.

[00157] In some embodiments, in response to the requestor failing to receive a calibration signal from the server, if the requestor is still writing a display system variable corresponding to the calibration signal, the requestor reports an error.

[00158] The operation of writing the display system variable is generated by the user of the interrogator. The calibration module of the interrogator successfully connects to the ECU of the responder via the server, and then any display system variable can be written to the user program of the interrogator. If any display system variable is missing, an error will be generated when writing the display system variable. Thus, if the interrogator fails to receive the calibration signal of the server, this indicates that the calibration signal is missing or the process of transmitting the calibration signal has failed. Thus, the display system variable corresponding to the calibration signal on the interrogator cannot be initialized, that is, the corresponding display system variable is also missing. In this case, if a non-existent display system variable is written, the interrogator can report an error.

[00159] Recording the calibration signal when the calibration module is disabled will be described in detail with the following examples.

[00160] For example, if a functional test is performed on an ECU of a vehicle defined as a responder, it is necessary to use the interrogator's graphical program to write the value of the EV_Current calibration signal to the ECU as 2.1 in order to set the current of the corresponding EV solenoid valve to 2.1 A.

[00161] First, the responder sends the ECU solenoid valve current signal EV_Current to the server in advance for storage, and then the calibration module of the interrogator calls the server's calibration database and automatically creates a variable named "ECU_EV_Current" of the display system for the solenoid valve current signal in the calibration database.

[00162] The user writes a graphical program to write the value of the calibration signal EV_Current as 2.1 to the interrogator, wherein the execution block expression corresponding to the write operation is "ECU_EV_Current = 2.1".

[00163] The user then starts the test and the interrogator calibration module connects to the responder ECU via the server but fails and therefore the interrogator calibration module marks the display system variable "ECU_EV_Current" as invalid.

[00164] When the execution unit for executing the interrogator graphic program is "EV_Current = 2.1", the interrogator calibration module detects that the display system variable entry is invalid, stops executing the assignment operation, and prints error information "invalid display system variable: ECU_EV_Current" in the interrogator calibration module message.

[00165] As shown in Fig. 3, one or more embodiments further provide a server for performing the method of synergistic remote calibration of vehicles at multiple locations as described above, wherein the server is configured to store a calibration database and receive and store a calibration signal from the transponder, and send a recorded target value by the interrogator to the transponder.

[00166] In particular, the server comprises a processor, a machine-readable data carrier, a communication bus and a communication interface. The processor, the machine-readable data carrier and the communication interface are connected to each other via the communication bus. The machine-readable data carrier is configured to store a calibration database and a calibration signal from the transponder and to execute a program for performing a method for synergistic remote calibration of vehicles in several locations, as indicated above. The programs cause the processor to perform operations corresponding to the method for synergistic remote calibration of vehicles in several locations, and the processor is further configured to receive a calibration signal from the transponder and send a target value recorded by the requester to the transponder.

[00167] In some embodiments, the communication interface may be an RS232, RS485, USB, or TYPE interface or the like, which may be connected to an external bus adapter. The communication interface may also comprise a wired or wireless network interface. The network interface may optionally comprise a wired interface and/or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is typically used to establish a communication connection between the server and other computing devices.

[00168] A computer-readable storage medium or a computer-readable storage medium comprises at least one type of storage device. The storage device includes flash memory, a hard disk, a multimedia card, a card-type storage device (for example, an SD or DX storage device or the like), a magnetic storage device, a magnetic disk or a compact disk, or the like. In some embodiments, the storage device may be an internal storage unit in a computing device, such as a hard disk of a computing device. In some other embodiments, the storage device may also be an external storage device of a computing device, such as a plug-in hard disk, a thin flash card (SMC), a secure digital (SD) card, a flash card or the like on a computing device. In addition, the storage device may include both an internal storage unit in a computing device and an external storage device. The storage device can be used not only for storing application software installed on the computing device and various types of data, such as computer program codes, etc., but also for temporary storage of data that has already been output or is to be output.

[00169] In some embodiments, the processor may be a central processing unit (CPU), controller, microcontroller, microprocessor, or other data processing chip that is used to run software codes in a memory device or process data, such as executing computer programs or the like.

[00170] In some embodiments, the communication bus may also be an input/output bus, which may be a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may include an address bus, a data bus, and a control bus, etc.

[00171] One or more embodiments further provide a method for operating a requester in a process of synergistic remote calibration of vehicles at multiple locations, comprising: calling by the requester a calibration signal from a server to read a value of the calibration signal; and/or sending by the requester to the server a command to record the calibration signal, and sending to the server a command to read the recorded calibration signal.

[00172] The requestor creates a corresponding display system variable for each calibration signal of the server; an initial value is assigned to the display system variables; a method for calling the calibration signal from the server by the requestor to read the value of the calibration signal includes: for the calibration signal defined as an observation variable, obtaining, using the calibration module in the requestor, the value of the calibration signal stored on the server, and storing the value of the calibration signal in the corresponding display system variable; when reading the display system variable, reading the last stored value of the display system variable.

[00173] The requestor creates a corresponding display system variable for each calibration signal of the server; an initial value is assigned to the display system variables; the requestor sending a command to the server to write the calibration signal and sending a command to the server to read the recorded calibration signal includes: for a calibration signal determined as a calibration variable, the requestor associating a destination function with an asynchronous function, where the destination function is a function for writing a display system variable of a target value to be written; when writing the calibration variable, sending a write command and a read command to the server by the asynchronous function, and then immediately returning, wherein the call to the asynchronous function is completed.

[00174] The requestor creates a corresponding display system variable for each calibration signal of the server; an initial value is assigned to the display system variables; sending by the requestor to the server a command to write the calibration signal and sending to the server a command to read the recorded calibration signal includes: for the calibration signal determined as the observation variable to be written, the requestor associating a destination function with an asynchronous function, where the destination function is a function for writing the display system variable of the target value to be written; when writing the observation variable to be written, sending by the asynchronous function a write command and a read command to the server, and then immediately returning, wherein the call to the asynchronous function is completed.

[00175] When the requestor is connected to the server such that when the server successfully executes a write command and a read command simultaneously, the requestor updates the last stored value of the display system variable to a target value to be written and sends the written target value to the server.

[00176] In some embodiments, in response to the requestor failing to receive a calibration signal from the server, if the requestor is still writing a display system variable corresponding to the calibration signal, the requestor reports an error.

[00177] In particular, the method of operating the interrogator in the process of synergistic remote calibration of a vehicle in multiple locations may be related to the above-mentioned method of synergistic remote calibration of a vehicle in multiple locations and will not be repeated here.

[00178] As shown in Fig. 4, one or more embodiments further provide a interrogator configured to execute programs for implementing a method of operating the interrogator in a process of synergistic remote calibration of a vehicle at multiple locations, as described above.

[00179] In particular, the interrogator comprises a interrogator processor, a machine-readable interrogator storage medium, a interrogator communication bus and a interrogator communication interface, wherein the interrogator processor, the machine-readable interrogator storage medium and the interrogator communication interface interact with each other via the communication bus; the machine-readable interrogator storage medium is configured to store programs for executing a method of operating the interrogator in the process of synergistic remote calibration of a vehicle in multiple locations, as indicated above, and these programs cause the interrogator processor to perform operations corresponding to the method of operating the interrogator in the process of synergistic remote calibration of a vehicle in multiple locations.

[00180] As shown in Fig. 5, one or more embodiments further provide a responder comprising a computing device and a bus adapter, wherein the computing device is configured to send a calibration signal to a server and receive a recorded target value from the server; the bus adapter is configured to read the calibration signal from the ECU and is further configured to distribute the target value to the ECU to complete the online calibration of the vehicle.

[00181] The computing device comprises a transponder processor, a transponder machine-readable storage medium, a transponder communication bus, and a transponder communication interface; wherein

[00182] the machine-readable data carrier of the respondent is configured to store programs for executing the method of synergistic remote calibration of a vehicle in several locations, as indicated above, and the processor of the respondent is configured to execute programs for executing the above-mentioned method of synergistic remote calibration of a vehicle in several locations;

[00183] the transponder processor, the transponder machine-readable storage medium and the transponder communication interface communicate with the bus adapter via the transponder communication bus.

[00184] The bus adapter is configured to read a calibration signal from the ECU and is further configured to distribute to the ECU a recorded value generated after the processor performs the above-described method of synergistic remote calibration of a vehicle at multiple locations.

[00185] In some embodiments, the computing device corresponds to the above server and will not be repeated here.

[00186] In some embodiments, the bus adapter may be a controller area network (CAN) bus adapter, a controller area network with adjustable data rate (CANFD) bus adapter, a FastLIN bus adapter, a local interconnect network (LIN) bus adapter, an Ethernet bus adapter, a FlexRay bus adapter, or possibly in a one-to-many or many-to-many ratio, which is not limited to a particular implementation in embodiments.

[00187] As shown in Fig. 6, one or more embodiments further provide a system for synergistic remote calibration of vehicles at multiple locations, comprising:

[00188] a server configured to store a calibration database and to receive and store a calibration signal from a responder;

[00189] a interrogator configured to execute programs for implementing a method of operating the interrogator in a process of synergistic remote calibration of a vehicle at multiple locations, as specified above;

[00190] a responder configured to send a calibration signal to a server and further configured to receive a recorded target value from the server and perform an online calibration of the vehicle.

[00191] The specific structures and methods of operation of the interrogator, responder and server may be related to the above-described method of synergistic remote calibration of a vehicle in multiple locations and the above-described method of operation of the interrogator in the process of synergistic remote calibration of a vehicle in multiple locations and will not be repeated here.

[00192] One or more embodiments of the present invention provide a computer program product including a computer program or instruction, wherein the computer program or instruction is executable on a computer to cause the computer to perform any of a method for synergistic remote calibration of a vehicle at multiple locations or a method for operating a requester in a synergistic remote calibration system of a vehicle at multiple locations.

[00193] In some embodiments, a machine-readable storage medium stores machine-readable instructions, wherein the machine-readable instructions are executed by at least one processor to perform the following method:

[00194] calling the calibration signal requester from the server to read the value of the calibration signal; and/or

[00195] sending by the requester to the server a command to record the calibration signal, and sending to the server a command to read the recorded calibration signal.

[00196] In some embodiments, a computer program product includes a computer-readable storage medium on which computer-readable program codes are stored, wherein the computer-readable program codes comprise instructions that cause at least one processor (one or more computing devices) to perform the following operations:

[00197] calling the calibration signal requester from the server to read the value of the calibration signal; and/or

[00198] sending a command by the requester to the server to record the calibration signal, and sending a command to the server to read the recorded calibration signal.

[00199] It should be understood that in several embodiments provided in the present invention, the disclosed device and method can be implemented differently. The above embodiments of the device are purely illustrative, for example, the block diagrams and block diagrams in the drawings show possible system architectures, functions and operations of the device, method and computer program product in several embodiments provided in the present invention. Thus, each block in the block diagrams and block diagrams can represent one module, one program fragment or one part of codes. A module, a program fragment or a part of codes contains one or more executable instructions for implementing specified logical functions. It should be noted that in some alternative embodiments, the functions indicated in the blocks can also be performed in a sequence that differs from that indicated in the drawings. For example, two continuous blocks can actually be performed substantially in parallel, and sometimes can be performed in reverse order, depending on the functions involved. It should be further noted that each block in the structural diagrams and/or flow charts and combinations of blocks in the structural diagrams and/or flow charts may be implemented by a system based on specialized hardware for performing specified functions or actions, or by a combination of specialized hardware and computer instructions.

[00200] Furthermore, the functional modules in the embodiments of the present invention may be integrated into one independent part, or exist as separate modules, or two or more modules are integrated into one independent part.

[00201] Functions when implemented by functional modules of software sold or used as separate products may be stored on a single machine-readable data carrier. Based on this understanding, the essence of the technical solutions of the present invention, or a part that complements the prior art, or a part of the technical solutions may be implemented in the form of a software product. The computer program product is stored on a single data carrier that contains several instructions that ensure the execution by a single computing device (for example, a personal computer, a server or a network device, etc.) of all or part of the steps of the method of each embodiment of the present invention.

[00202] Considering the ideal embodiments of the present invention, relevant persons may, based on the contents of the detailed description, make various changes and modifications within the scope of legal protection of the technical idea of the present invention. The technical scope of the present disclosure is not limited by the contents of this description, but only by the technical scope claimed in the claims.

Claims (74)

1. A method for synergistic remote calibration of vehicles at multiple locations, comprising: server, requester and responder; in this case the server stores the calibration database, receives and stores the calibration signal from the responder; the requestor calls the calibration signal from the server to read the value of the calibration signal; and/or the interrogator sends a calibration signal recording command to the server to send the recorded target value to the responder through the server, and the responder completes the online calibration of the vehicle, and the interrogator reads the recorded calibration signal by accessing the server; the requestor creates a corresponding display system variable for each server calibration signal; the initial value is assigned to the variables of the display system, while the method of calling the calibration signal from the server by the requester to read the value of the calibration signal includes: for a calibration signal defined as an observation variable, receiving by the calibration module in the requestor the value of the calibration signal stored on the server and storing the value of the calibration signal in the corresponding variable of the display system; when reading a display system variable, reading the last stored value of the display system variable; and/or sending a command by the requester to record the calibration signal to the server, and sending a command to the server to read the recorded calibration signal includes: for a calibration signal defined as a calibration variable, associating by the requestor a destination function with an asynchronous function, wherein the destination function is a write function of a display system variable of the target value to be written; When writing a calibration variable, send a write command and a read command to the server via an asynchronous function, and then return immediately, completing the asynchronous function call. 2. The method according to item 1, characterized in that sending by the requester a command to record the calibration signal to the server and sending to the server a command to read the recorded calibration signal additionally include: for a calibration signal defined as a recordable observation variable, associating by the interrogator a destination function with an asynchronous function, wherein the destination function is a write function of a display system variable of a target value to be recorded; when writing a writable watch variable, sending a write command and a read command to the server via an asynchronous function and then returning immediately, completing the asynchronous function call. 3. The method according to paragraph 1, characterized in that, When the server successfully executes both the write command and the read command simultaneously, the requestor updates the last saved value of the display system variable to the writeable target value and sends the written target value to the server. 4. The method according to item 1, characterized in that The queryer is additionally applicable for batch changing of values of display system variables using a wildcard character and updating codes by means of a wildcard in the graphical program of the requester and sending the current result of the graphical program to at least one responder via the server. 5. A server configured to perform a method for synergistic remote calibration of vehicles in multiple locations according to any one of paragraphs 1-4, wherein the server is configured to store a calibration database, receive and store a calibration signal from the responder, and send a target value recorded by the requester to the responder. 6. A method for a requester to operate in a synergistic remote calibration process for vehicles at multiple locations, comprising: the requester calling the calibration signal from the server to read the value of the calibration signal; and/or sending by the requester to the server a command to record the calibration signal and sending to the server a command to read the recorded calibration signal; the requestor creates a corresponding display system variable for each server calibration signal; the initial value is assigned to the variables of the display system; the method of calling the calibration signal from the server by the requester to read the value of the calibration signal includes: for a calibration signal defined as an observation variable, receiving by the calibration module in the requestor the value of the calibration signal stored on the server and storing the value of the calibration signal in the corresponding variable of the display system; when reading a display system variable, reading the last stored value of the display system variable; and/or the requestor creates a corresponding display system variable for each server calibration signal; the initial value is assigned to the variables of the display system; sending a command by the requester to the server to record the calibration signal and sending a command to the server to read the recorded calibration signal include: for a calibration signal defined as a calibration variable, associating by the requestor a destination function with an asynchronous function, wherein the destination function is a write function of a display system variable of the target value to be written; When writing a calibration variable, send a write command and a read command to the server via an asynchronous function, and then return immediately, completing the asynchronous function call. 7. The method according to item 6, characterized in that the requestor creates a corresponding display system variable for each server calibration signal; the initial value is assigned to the variables of the display system; sending a command by the requester to the server to record the calibration signal and sending a command to the server to read the recorded calibration signal include: for a calibration signal defined as a recordable observation variable, associating by the interrogator a destination function with an asynchronous function, wherein the destination function is a recording function of a display system variable of a target value to be recorded; when writing a writable watch variable, sending a write command and a read command to the server via an asynchronous function and then returning immediately, completing the asynchronous function call. 8. The method according to item 6, characterized in that the requestor is connected to the server such that when the server successfully executes a write command and a read command simultaneously, the requestor updates the last stored value of the display system variable to the target value to be written. 9. The method according to item 8, characterized in that In response to the requestor failing to receive a calibration signal from the server, if the requestor is still writing the display system variable corresponding to the calibration signal, the requestor reports an error. 10. A computer device of a requester for requesting a calibration signal from a server for reading the value of the calibration signal, configured to execute programs for implementing the method of operation of the requester in the process of synergistic remote calibration of vehicles in several locations according to any of paragraphs 6-9. 11. A defendant computer device for completing online calibration of a vehicle, configured to perform the method of synergistic remote calibration of vehicles at multiple locations according to any one of claims 1-4, wherein the defendant comprises: a computing device and a bus adapter, while the computing device is configured to send a calibration signal to the server and receive a recorded target value from the server; the bus adapter is configured to read a calibration signal from an electronic control unit (ECU) and is further configured to distribute a target value to the ECU to complete the corresponding online calibration of the vehicle. 12. A machine-readable data carrier storing machine-readable instructions, wherein the machine-readable instructions are executed by at least one processor to perform the method according to any one of paragraphs 6-9. 13. A system for synergistic remote calibration of vehicles at multiple locations, comprising: a server configured to store a calibration database and to receive and store a calibration signal from a transponder; a requestor configured to call a calibration signal from a server to read a value of the calibration signal; and/or send a command to record the calibration signal to the server and send a command to the server to read the recorded calibration signal; a responder configured to send a calibration signal to a server and further configured to receive a recorded target value from the server and perform online calibration of the vehicle. 14. The system according to item 13, characterized in that the requestor creates a corresponding display system variable for each server calibration signal; the initial value is assigned to the variables of the display system; the method of calling the calibration signal from the server by the requester to read the value of the calibration signal includes: for a calibration signal defined as an observation variable, receiving by the calibration module in the requestor the value of the calibration signal stored on the server and storing the value of the calibration signal in the corresponding variable of the display system; when reading a display system variable, reading the last stored value of the display system variable; and/or the requestor creates a corresponding display system variable for each server calibration signal; the initial value is assigned to the variables of the display system; sending a command by the requester to record the calibration signal to the server and sending a command to the server to read the recorded calibration signal include: for a calibration signal defined as a calibration variable, associating by the requestor a destination function with an asynchronous function, wherein the destination function is a write function of a display system variable of the target value to be written; when writing a calibration variable, sending a write command and a read command to the server via an asynchronous function and then returning immediately, at which point the asynchronous function call completes; and/or the requestor creates a corresponding display system variable for each server calibration signal; the initial value is assigned to the variables of the display system; sending by the requester a command to record the calibration signal to the server and sending to the server a command to read the recorded calibration signal additionally include: for a calibration signal defined as a recordable observation variable, associating by the interrogator a destination function with an asynchronous function, wherein the destination function is a recording function of a display system variable of a target value to be recorded; when writing a writable watch variable, sending a write command and a read command to the server via an asynchronous function and then returning immediately, completing the asynchronous function call.