CN110850841A - Fault diagnosis method and related device - Google Patents
Fault diagnosis method and related device Download PDFInfo
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- CN110850841A CN110850841A CN201911046140.1A CN201911046140A CN110850841A CN 110850841 A CN110850841 A CN 110850841A CN 201911046140 A CN201911046140 A CN 201911046140A CN 110850841 A CN110850841 A CN 110850841A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The embodiment of the application discloses a fault diagnosis method and a related device, wherein the method comprises the following steps: the fault diagnosis device scans N equipment to be diagnosed connected with N interfaces to obtain N groups of equipment information; the fault diagnosis device stores M groups of sending information to be sent to the N devices to be diagnosed to a sending queue; the fault diagnosis device acquires target group sending information to be sent in the sending queue, wherein the target group sending information comprises data to be sent to target equipment to be diagnosed; the fault diagnosis device generates a target data frame according to the target group equipment information and the target group sending information; the fault diagnosis device sends the target data frame to the target equipment to be diagnosed; the method can be used for simultaneously diagnosing the faults of a plurality of automobiles, and is high in diagnosis efficiency.
Description
Technical Field
The present disclosure relates to the field of fault diagnosis, and in particular, to a fault diagnosis method and related apparatus.
Background
The automobile is the most familiar and common vehicle, plays an important role in the life of people, and the functional diagnosis of the automobile is particularly important along with the rapid increase of the holding capacity of the automobile.
At present, the automobile diagnosis method usually adopts an automobile diagnosis instrument to diagnose the automobile, and the automobile diagnosis instrument is fault diagnosis software running on a computer. In the automobile diagnosis mode, the computer end usually communicates with the automobile through the USB interface, and diagnoses the fault of the automobile through the running fault diagnosis software. However, the computer can only diagnose one automobile at a time by adopting the fault diagnosis mode. That is, the computer cannot diagnose the faults of multiple automobiles at the same time. Therefore, there is a need to develop a solution capable of simultaneously performing failure diagnosis on a plurality of automobiles.
Disclosure of Invention
The embodiment of the application discloses a fault diagnosis method and a related device, which can be used for simultaneously diagnosing faults of a plurality of automobiles and are high in diagnosis efficiency.
In a first aspect, an embodiment of the present application provides a fault diagnosis method, which may include:
the fault diagnosis device scans N equipment to be diagnosed connected with N interfaces to obtain N groups of equipment information; the N interfaces correspond to the N devices to be diagnosed one by one, the N sets of device information correspond to the N devices to be diagnosed one by one, any set of device information includes information required by the fault diagnosis device to realize communication with the device to be diagnosed corresponding to the any set of device information, and N is an integer greater than 1;
the fault diagnosis device stores M groups of sending information to be sent to the N devices to be diagnosed to a sending queue; m is an integer greater than 1;
the fault diagnosis device acquires target group sending information to be sent in the sending queue, wherein the target group sending information comprises data to be sent to target equipment to be diagnosed;
the fault diagnosis device generates a target data frame according to the target group equipment information and the target group sending information; the target group device information is a group of device information corresponding to the target device to be diagnosed in the N groups of device information, and the target group sending information further includes a target protocol identifier of a target fault diagnosis protocol supported by the target device to be diagnosed;
and the fault diagnosis device sends the target data frame to the target equipment to be diagnosed.
In this embodiment of the application, each interface of the fault diagnosis device may be connected to one device to be diagnosed, and the fault diagnosis device obtains N sets of device information by scanning N devices to be diagnosed connected to the N interfaces. The fault diagnosis device can communicate with the N devices to be diagnosed by utilizing the N groups of device information. The fault diagnosis device communicates with the N devices to be diagnosed simultaneously in a queue sending mode, and can communicate with a plurality of devices to be diagnosed simultaneously and accurately.
In an optional implementation manner, before the fault diagnosis apparatus stores M groups of transmission information to be transmitted to the N devices to be diagnosed in a transmission queue, the method further includes:
the fault diagnosis device obtains the target protocol identification;
the fault diagnosis device generates the target group sending information comprising the identification of the target equipment to be diagnosed, the target protocol identification and the initial data; the initial data is data to be sent to the target diagnostic device.
In an optional implementation manner, after the fault diagnosis device obtains the target protocol identifier, the method further includes:
the fault diagnosis device determines a channel value of a channel which communicates with the target equipment to be diagnosed through the target fault diagnosis protocol according to the identification of the target equipment to be diagnosed and the identification of the target protocol;
the generating, by the fault diagnosis apparatus, the target group transmission information including the identifier of the target device to be diagnosed, the target protocol identifier, and the initial data includes:
the fault diagnosis device analyzes the channel value to obtain the identifier of the target equipment to be diagnosed and the target protocol identifier, and generates the target group sending information including the identifier of the target equipment to be diagnosed, the target protocol identifier and the initial data.
In an optional implementation manner, before the fault diagnosis apparatus generates the target data frame according to the target group device information and the target group transmission information, the method further includes:
the fault diagnosis device obtains the identifier of the target equipment to be diagnosed, which is included in the target group sending information;
and the fault diagnosis device acquires the target group equipment information from the N groups of equipment information according to the identifier of the target equipment to be diagnosed.
In an optional implementation manner, after the fault diagnosis apparatus sends the target data frame to the target device to be diagnosed, the method further includes:
the fault diagnosis device receives a feedback data frame from the target equipment to be diagnosed; the feedback data frame is a data frame sent by the target equipment to be diagnosed responding to the target data frame;
the fault diagnosis device analyzes the feedback data frame to obtain a frame function field;
the fault diagnosis device stores the feedback data frame to a message queue under the condition that the frame function field is a diagnosis data frame instruction;
and the fault diagnosis device stores the feedback data frame to a read queue under the condition that the frame function field is not the diagnosis data frame instruction.
In an optional implementation manner, the target group device information further includes an identifier of the target device to be diagnosed and a device handle of a USB interface to which the target device to be diagnosed is connected; before the fault diagnosis device analyzes the feedback data frame to obtain a frame function field, the method further includes:
determining a target device handle of a USB interface connected with the device to be diagnosed and sending the feedback data frame;
inquiring the identifier of the equipment to be diagnosed corresponding to the handle of the target equipment in the N groups of equipment information to obtain the identifier of the target equipment to be diagnosed;
the fault diagnosis device analyzes the feedback data frame to obtain a frame function field, and the method comprises the following steps:
the fault diagnosis device analyzes the feedback data frame to obtain the frame function field, the data field and the protocol identification field;
the storing the feedback data frame to a message queue comprises:
and storing the frame function field, the data field, the identification of the target device to be diagnosed and the protocol identification field as a group of data to the message queue.
In an optional implementation manner, after storing the frame function field, the data field, the identifier of the target device to be diagnosed, and the protocol identifier field as a set of data in the message queue, the method further includes:
the fault diagnosis device analyzes the channel value to obtain the identifier of the target equipment to be diagnosed and the target protocol identifier;
acquiring at least one group of data matched with the identification of the target device to be diagnosed and the identification of the target protocol from the message queue;
a data portion is extracted from the at least one set of data.
In a second aspect, an embodiment of the present application provides a fault diagnosis apparatus, including:
the scanning unit is used for scanning N devices to be diagnosed connected with the N interfaces to obtain N groups of device information; the N interfaces correspond to the N devices to be diagnosed one by one, the N sets of device information correspond to the N devices to be diagnosed one by one, any set of device information includes information required by the fault diagnosis device to realize communication with the device to be diagnosed corresponding to the any set of device information, and N is an integer greater than 1;
the storage unit is used for storing M groups of sending information to be sent to the N devices to be diagnosed to a sending queue; m is an integer greater than 1;
an obtaining unit, configured to obtain target group sending information to be sent in the sending queue, where the target group sending information includes data to be sent to a target device to be diagnosed;
a generating unit configured to generate a target data frame according to target group device information and the target group information; the target group device information is a group of device information corresponding to the target device to be diagnosed in the N groups of device information, and the target group information includes a target protocol identifier of a target fault diagnosis protocol supported by the target device to be diagnosed;
and the sending unit is used for sending the target data frame to the target equipment to be diagnosed.
In an optional implementation manner, the obtaining unit is further configured to obtain the target protocol identifier;
the generating unit is further configured to generate the target group sending information including the identifier of the target device to be diagnosed, the target protocol identifier, and the initial data; the initial data is data to be sent to the target diagnostic device.
In an optional implementation manner, the fault diagnosis apparatus further includes:
the determining unit is used for determining a channel value of a channel which communicates with the target equipment to be diagnosed through the target fault diagnosis protocol according to the identification of the target equipment to be diagnosed and the target protocol identification;
and the analysis unit is used for analyzing the channel value to obtain the identifier of the target equipment to be diagnosed and the target protocol identifier.
In an optional implementation manner, the obtaining unit is further configured to obtain an identifier of the target device to be diagnosed, where the identifier is included in the target group sending information; and acquiring the target group equipment information from the N groups of equipment information according to the identification of the target equipment to be diagnosed.
In an optional implementation manner, the fault diagnosis apparatus further includes:
the receiving unit is used for receiving a feedback data frame from the target equipment to be diagnosed; the feedback data frame is a data frame sent by the target equipment to be diagnosed responding to the target data frame;
the analysis unit is also used for analyzing the feedback data frame to obtain a frame function field;
the storage unit is further configured to store the feedback data frame to a message queue if the frame function field is a diagnostic data frame instruction; and under the condition that the frame function field is not the diagnosis data frame instruction, storing the feedback data frame to a read queue.
In an optional implementation manner, the target group device information further includes an identifier of the target device to be diagnosed and a device handle of a USB interface to which the target device to be diagnosed is connected;
the determining unit is further configured to determine a target device handle of a USB interface connected to the device to be diagnosed, which sends the feedback data frame;
the query unit is used for querying the identifier of the device to be diagnosed corresponding to the target device handle in the N groups of device information to obtain the identifier of the target device to be diagnosed;
the analysis unit is specifically configured to analyze the feedback data frame to obtain the frame function field, the data field, and the protocol identification field;
the storage unit is specifically configured to store the frame function field, the data field, the identifier of the target device to be diagnosed, and the protocol identifier field as a group of data in the message queue.
In an optional implementation manner, the parsing unit is further configured to parse the channel value after the storage unit stores the frame function field, the data field, the identifier of the target device to be diagnosed, and the protocol identifier field as a group of data in the message queue, so as to obtain the identifier of the target device to be diagnosed and the target protocol identifier;
the acquiring unit is further configured to acquire at least one set of data that matches the identifier of the target device to be diagnosed and the target protocol identifier from the message queue; the failure diagnosis apparatus further includes:
an extraction unit for extracting a data portion from the at least one set of data.
In a third aspect, an embodiment of the present application provides an electronic device, including: a memory for storing a program; a processor for executing the program stored in the memory, the processor being configured to perform the method of the first aspect and any one of the alternative implementations as described above when the program is executed.
In a fourth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a data interface, and the processor reads instructions stored on a memory through the data interface to perform the method according to the first aspect and any optional implementation manner.
In a fifth aspect, the present application provides a computer-readable storage medium storing a computer program, where the computer program includes program instructions, and the program instructions, when executed by a processor, cause the processor to execute the method of the first aspect and any optional implementation manner.
In a sixth aspect, the present application provides a computer program product, which includes program instructions, and when executed by a processor, causes the processor to execute the method of the first aspect and any optional implementation manner.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a flowchart of a fault diagnosis method provided in an embodiment of the present application;
fig. 2 is a flowchart of another fault diagnosis method provided in the embodiment of the present application;
fig. 3 is a flowchart of a method for receiving data by a fault diagnosis device according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a method for reading data in a message queue by a fault diagnosis device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a fault diagnosis device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another fault diagnosis device provided in the embodiment of the present application.
Detailed Description
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, or apparatus.
At present, a vehicle fault diagnosis scheme is generally adopted, in which a fault diagnosis device (e.g., a notebook computer) running fault diagnosis software is used to communicate with a device to be diagnosed (e.g., a vehicle) through a USB interface, so as to diagnose a fault of the device to be diagnosed. In this embodiment, the fault diagnosis device can only diagnose faults for one vehicle at a time, i.e. only one device to be diagnosed can be connected at a time. That is, the failure diagnosis apparatus cannot perform failure diagnosis on a plurality of automobiles at the same time. Therefore, there is a need to develop a solution capable of simultaneously performing failure diagnosis on a plurality of automobiles. The following describes a fault diagnosis method capable of performing fault diagnosis on a plurality of automobiles according to an embodiment of the present application.
Fig. 1 is a flowchart of a fault diagnosis method provided in an embodiment of the present application, and as shown in fig. 1, the method may include:
101. the fault diagnosis device scans N equipment to be diagnosed connected with N interfaces to obtain N groups of equipment information.
The N interfaces correspond to the N devices to be diagnosed one by one, the N sets of device information correspond to the N devices to be diagnosed one by one, any set of device information includes information required by the fault diagnosis device to realize communication with the device to be diagnosed corresponding to the any set of device information, and N is an integer greater than 1. The fault diagnosis device can be an electronic device such as a notebook computer, a desktop computer, an automobile diagnostic apparatus and the like which runs fault diagnosis software (namely upper computer diagnosis software). The N interfaces may be N USB interfaces. Optionally, the fault diagnosis apparatus has N or more than N USB interfaces, and each USB interface may be connected to a device to be diagnosed. The device to be diagnosed may be an automobile or other device. In some embodiments, the upper computer diagnostic software (i.e., fault diagnosis software) running on the fault diagnosis device calls the passthrushancforddevices function, scans the N devices to be diagnosed connected by the N interfaces, and sets of N device information; and storing the N groups of device information into a device information queue USBDeviceinfirList. Optionally, any set of device information may include the following information corresponding to the device to be diagnosed corresponding to the any set of device information: streamRx, i.e., a handle for receiving data; streamTx, a handle for sending data; a USBHandle device handle; the structure of the USBDeviceinfo device information; the identity (i.e., ID number) of the device to be diagnosed. The USBHandle device handle may be a handle that is opened on the upper computer diagnostic software and that initializes and identifies a specific device (i.e., the device to be diagnosed). The structure of the USBDeviceInfor device information contains the name of the device (i.e., the device to be diagnosed), the Product ID (Product ID, abbreviated as PID) of the device, the serial number of the device, and other detailed information at the bottom layer.
Optionally, the upper computer diagnostic software running on the fault diagnosis apparatus may also call passthruoopen functions according to the identifiers of the N devices to be diagnosed, open and initialize the queried devices one by one, and register a callback function StmRx _ Complete that receives data uniformly.
102. And the fault diagnosis device stores M groups of sending information to be sent to the N devices to be diagnosed to a sending queue.
M is an integer greater than 1. Optionally, before performing step 102, the fault diagnosis apparatus may perform the following operations: the fault diagnosis device obtains a target protocol identification of a fault diagnosis protocol supported by target equipment to be diagnosed; generating target group sending information comprising the identifier of the target equipment to be diagnosed, the target protocol identifier and the initial data; the initial data is data to be transmitted to the target diagnostic apparatus. The fault diagnosis protocol supported by the target device to be diagnosed may be understood as a fault diagnosis protocol for diagnosing the target device to be diagnosed, which is determined by the fault diagnosis means. The target device to be diagnosed is included in the N devices to be diagnosed, and the target group sending message is a group of sending messages in the sending queue. In practical application, the fault diagnosis apparatus may obtain an identifier of a fault diagnosis protocol supported by each device to be diagnosed and data to be sent to each device to be diagnosed, and further generate the M sets of sending information.
In an optional implementation manner, after the fault diagnosis apparatus obtains the target protocol identifier, the method further includes:
the fault diagnosis device determines a channel value of a channel which communicates with the target equipment to be diagnosed through the target fault diagnosis protocol according to the identification of the target equipment to be diagnosed and the target protocol identification;
the generating, by the fault diagnosis apparatus, the target group transmission information including the identifier of the target device to be diagnosed, the target protocol identifier, and the initial data includes:
the fault diagnosis device analyzes the channel value to obtain the identifier of the target device to be diagnosed and the target protocol identifier, and generates the target group transmission information including the identifier of the target device to be diagnosed, the target protocol identifier and the initial data.
In some embodiments, the upper computer diagnostic software running on the fault diagnosis device may call the passThruConnect function, and select a DeviceID device number (e.g., the identification of the target device to be diagnosed) and a specific protocol ID (e.g., the identification of the target protocol) as parameters to be transmitted; a hardware Channel is created and a four byte Channel value (i.e., Channel value) generated by shifting DeviceID left by 16 bits plus protocol is returned to the upper computer diagnostic software. The analyzing, by the fault diagnosis apparatus, the channel value to obtain the identifier of the target device to be diagnosed and the target protocol identifier, and the generating of the target group transmission information including the identifier of the target device to be diagnosed, the target protocol identifier, and the initial data may be: upper computer diagnostic software running on the fault diagnosis device calls a set filter function, sets an acquisition parameter function, sends an original data frame function and the like, analyzes the DeviceID and the protocol ID according to the Channel value, and stores a group of sending data generated by the call function into a sending queue, namely a SendQueue queue. For example, a host diagnostics software call to set a filter function may generate a set of parameters including filter parameters, DeviceID, and protocol id. As another example, the upper computer diagnostic software call set send raw data frame function may generate a set of parameters including send raw data frame, DeviceID, and ProtocolID. It should be understood that the fault diagnosis apparatus may generate a plurality of channel values, one device to be diagnosed corresponds to one or more channel values, and the fault diagnosis apparatus may obtain a set of transmission information according to each channel value. That is, the failure diagnosing apparatus can accurately obtain each set of information to be transmitted to each device to be diagnosed.
103. And the fault diagnosis device acquires the target group sending information to be sent in the sending queue.
The target group transmission information includes data to be transmitted to the target device to be diagnosed.
104. The failure diagnosis apparatus generates a target data frame based on the target group device information and the target group transmission information.
The target group device information is a group of device information corresponding to the target device to be diagnosed in the N groups of device information, and the target group transmission information further includes a target protocol identifier of a target fault diagnosis protocol supported by the target device to be diagnosed.
In an optional implementation manner, before the fault diagnosis apparatus generates the target data frame according to the target group device information and the target group transmission information, the method further includes:
the fault diagnosis device obtains the identifier of the target equipment to be diagnosed, which is included in the target group sending information;
and the fault diagnosis device acquires the target group equipment information from the N groups of equipment information according to the identifier of the target equipment to be diagnosed. In the implementation mode, the device information required for sending data to the target device to be diagnosed can be accurately and quickly acquired from the N groups of device information.
105. And the fault diagnosis device sends a target data frame to the target equipment to be diagnosed.
In the embodiment of the application, the fault diagnosis device communicates with the N devices to be diagnosed simultaneously in a queue sending manner, and can communicate with a plurality of devices to be diagnosed simultaneously and accurately.
The fault diagnosis method of fig. 1 is further described in detail below.
Fig. 2 is a flow chart of another fault diagnosis method provided in an embodiment of the present application, where the method in fig. 2 is further detailed and detailed on the method in fig. 1, and as shown in fig. 2, the method may include:
201. and the upper computer diagnosis software calls a scanning function to scan each device to be diagnosed.
Optionally, the upper computer diagnostic software running on the fault diagnosis apparatus calls a passthrushancfordevices function (i.e., a scan function) to scan each device to be diagnosed.
202. The scanning function stores the scanned device information into a device information queue (i.e., usbdeviceinfirlist).
Step 201 and step 203 are an alternative implementation of step 101.
203. And the scanning function is returned to the upper computer diagnosis software equipment identification list and the scanned number of the equipment to be diagnosed.
The device identifier list includes identifiers of the devices to be diagnosed, and the number of the devices to be diagnosed refers to the number of the scanned devices to be diagnosed.
204. And the upper computer diagnosis software calls the first functions, opens and initializes the inquired equipment to be diagnosed one by one, and registers the callback function for uniformly receiving data.
Optionally, the upper computer diagnostic software calls a passthruoopen function (i.e., a first function), transmits the identifier of each device to be diagnosed (i.e., the ID of each device to be diagnosed), opens and initializes the queried devices to be diagnosed one by one, and registers a callback function StmRx _ Complete that accepts data uniformly.
205. The upper computer diagnosis software calls a second function, and the identifier of the equipment to be diagnosed and the fault diagnosis protocol identifier are selected as parameters to be transmitted; and creating a hardware channel, and returning the generated channel value to the upper computer diagnostic software.
Optionally, the upper computer diagnostic software calls a passThruConnect function (i.e., a second function), and selects the identifier of the device to be diagnosed and the fault diagnosis protocol identifier as parameters to be transmitted; creating a hardware Channel. Where Channel is a four byte Channel value generated by shifting DeviceID (i.e., the identification of the device to be diagnosed) left by 16 bits plus protocol id (i.e., the troubleshooting protocol identification). In some embodiments, the upper computer diagnostic software may select a fault diagnosis protocol for diagnosing each device to be diagnosed according to the identifier of each device to be diagnosed, and further obtain the identifier of each fault diagnosis protocol. In some embodiments, the user may select a fault diagnosis protocol for diagnosing each device to be diagnosed, and then obtain each fault diagnosis protocol identifier.
206. And transmitting the generated channel value, calling a filter setting function, a parameter obtaining function, an original data frame sending function and the like by upper computer diagnostic software, analyzing the ID of the equipment to be diagnosed and the ID of the fault diagnosis protocol according to the channel value, and storing the obtained information to a sending queue.
The transmitted generated channel values refer to the fact that the upper computer diagnostic software transmits all channel values into a filter function, sets an acquisition parameter function, sends an original data frame function and the like respectively. For example, the upper computer diagnostic software respectively transmits each channel value into a filter function, the filter function can analyze each channel value to obtain the device ID to be diagnosed and the fault diagnosis protocol ID corresponding to each channel value, and store the filter reference, the device ID to be diagnosed and the fault diagnosis protocol ID as a group of information to the transmission queue. Step 205 and step 206 are an alternative implementation of step 102.
207. And a sending thread in the fault diagnosis device iteratively traverses the sending queue, and a group of data in the sending queue is taken out to obtain the ID of the equipment to be diagnosed in the group of data.
The device ID in fig. 2 refers to the device ID to be diagnosed (i.e. the identity of the device to be diagnosed), and the protocol ID refers to the fault protocol ID (i.e. the fault diagnosis protocol identity). Step 207 is an alternative implementation of step 103.
208. And traversing the equipment information queue through the ID of the equipment to be diagnosed, finding out the structure of the corresponding equipment information, taking out a handle for sending data, and forming a data frame with the beginning of a 55AA format according to the ID of the fault diagnosis protocol and the data packet.
The data group may be the above-mentioned M-group transmission information. It should be understood that the upper computer diagnostic software may pack the data frames beginning in the 55AA format according to each set of transmission information and the fault diagnosis protocol ID corresponding to each set of transmission information. Step 208 is an alternative implementation of step 104.
209. And the upper computer diagnosis software calls a third function, transmits a handle for transmitting data and a packed data frame as parameters, and transmits the parameters to the specified equipment to be diagnosed.
Optionally, the upper computer diagnostic software calls an StmK _ Write function (i.e., a third function), and the handle used for sending data and the packed data frame are sent into streamTx as parameters and sent to the specified device to be diagnosed. Step 209 is an alternative implementation of step 105.
Fig. 2 describes a process of the fault diagnosis apparatus sending data to each device to be diagnosed in a manner of a bottom layer implementation. In practical applications, the fault diagnosis apparatus receives data frames from each device to be diagnosed. The following describes a method flow of how the fault diagnosis apparatus receives data frames from each device to be diagnosed.
Fig. 3 is a flowchart of a method for receiving data by a fault diagnosis device according to an embodiment of the present application, and as shown in fig. 3, the method may include:
301. and the bottom-layer driver of the fault diagnosis device automatically calls a callback function and transmits the handle of the target equipment.
The underlying driver automatically calls the StmRx _ Complete callback function (i.e., the above registered callback function for uniformly accepting data) and passes in the usb handle device handle. The target device handle may be a device handle of a USB interface to which the target device to be diagnosed is connected, and the target device to be diagnosed may be any one of the N devices to be diagnosed. Optionally, before executing step 301, the fault diagnosis apparatus receives a feedback data frame from the target device to be diagnosed; the feedback data frame is a data frame sent by the target device to be diagnosed in response to the target data frame. The fault diagnosis apparatus may identify the device handle of the USB interface (i.e., the target device handle) that received the feedback frame data.
302. And the fault diagnosis device iteratively traverses the equipment information queue through the target equipment handle to obtain the structure of the equipment information and the identification of the target equipment to be diagnosed.
The fault diagnosis apparatus iteratively traverses the device information queue through the target device handle, and the structure of the device information and the identifier of the target device to be diagnosed may be obtained by: the fault diagnosis device queries the identifier of the equipment to be diagnosed corresponding to the target equipment handle and the structure of the equipment information in the N groups of equipment information.
303. The fault diagnosis device analyzes the data frame at the beginning of 55AA received by the verification bottom layer and extracts a protocol identification field, a frame function field and a data field.
The 55AA first data frame may be the above-mentioned feedback data frame. The protocol identification field may include the target protocol identification described above.
304. The failure diagnosis means obtains response information.
The response information may include an identification of the target device to be diagnosed, a protocol identification field, a frame function field, and a data field.
305. The fault diagnosis device judges whether the frame function field is a diagnosis data frame command.
If yes, go to step 306; if not, go to step 307.
306. The failure diagnosis apparatus stores the response information to the message queue.
307. The failure diagnosis apparatus stores the response information to the read queue.
The flow of the method for the fault diagnosis apparatus to receive the data frame responded by the target device to be diagnosed is described in fig. 3. It should be understood that the fault diagnosis apparatus may receive the data frame to which each device to be diagnosed responds in a similar manner.
In practical applications, the fault diagnosis device also reads each group of data in the message queue. The following describes how the fault diagnosis apparatus reads data in the message queue.
Fig. 4 is a flowchart of a method for reading data in a message queue by a fault diagnosis device according to an embodiment of the present application, where as shown in fig. 4, the method may include:
401. and the upper computer diagnostic software calls a fourth function and transmits a channel value.
Optionally, the upper computer diagnostic software calls the passthruareadmsgs function (i.e., the fourth function) and passes the Channel value into the passthruareadmsgs function.
402. The fourth function resolves the device ID and the protocol ID by the channel value.
The device ID in fig. 4 refers to the device ID to be diagnosed (i.e. the identity of the device to be diagnosed), and the protocol ID refers to the fault protocol ID (i.e. the fault diagnosis protocol identity). It should be appreciated that the fourth function resolves a channel value to obtain a device ID and protocol ID. In practical applications, the upper computer diagnostic software may call the fourth function and respectively transfer the channel values generated in step 205 in fig. 2.
403. The fourth function traverses the message queue through the device ID and protocol lID to find matching response information.
404. And the fourth function extracts the data part in the response information and returns the data part to the upper computer diagnostic software.
Optionally, the passthruaredmsgs function extracts a Data part in the response message, fills the pasthru _ MSG structure, and returns the Data part to the upper computer diagnostic software.
It can be understood that the fault diagnosis apparatus may call the fourth function and input the channel value, and the fourth function may accurately extract the data sent by each device to be diagnosed from the message queue.
Fig. 5 is a schematic structural diagram of a fault diagnosis device according to an embodiment of the present application, and as shown in fig. 5, the fault diagnosis device may include:
a scanning unit 501, configured to scan N devices to be diagnosed connected to N interfaces to obtain N sets of device information; the N interfaces correspond to the N devices to be diagnosed one to one, the N sets of device information correspond to the N devices to be diagnosed one to one, any set of device information includes information required by the fault diagnosis device to realize communication with the device to be diagnosed corresponding to the any set of device information, and N is an integer greater than 1;
a storage unit 502, configured to store M groups of transmission information to be transmitted to the N devices to be diagnosed to a transmission queue; m is an integer greater than 1;
an obtaining unit 503, configured to obtain target group sending information to be sent in the sending queue, where the target group sending information includes data to be sent to a target device to be diagnosed;
a generating unit 504, configured to generate a target data frame according to the target group device information and the target group information; the target group device information is a group of device information corresponding to the target device to be diagnosed in the N groups of device information, and the target group information includes a target protocol identifier of a target fault diagnosis protocol supported by the target device to be diagnosed;
a sending unit 505, configured to send the target data frame to the target device to be diagnosed.
In an optional implementation manner, the obtaining unit 503 is further configured to obtain the target protocol identifier;
a generating unit 504, configured to generate the target group sending information including an identifier of the target device to be diagnosed, the target protocol identifier, and initial data; the initial data is data to be transmitted to the target diagnostic apparatus.
In an optional implementation manner, the fault diagnosis apparatus further includes:
a determining unit 506, configured to determine, according to the identifier of the target device to be diagnosed and the target protocol identifier, a channel value of a channel that communicates with the target device to be diagnosed through the target fault diagnosis protocol;
and an analyzing unit 507, configured to analyze the channel value to obtain an identifier of the target device to be diagnosed and the target protocol identifier.
In an optional implementation manner, the obtaining unit 503 is further configured to obtain an identifier of the target device to be diagnosed, where the identifier is included in the target group sending information; and acquiring the target group device information from the N groups of device information according to the identification of the target device to be diagnosed.
In an optional implementation manner, the fault diagnosis apparatus further includes:
a receiving unit 508, configured to receive a feedback data frame from the target device to be diagnosed; the feedback data frame is a data frame sent by the target equipment to be diagnosed in response to the target data frame;
the analyzing unit 507 is further configured to analyze the feedback data frame to obtain a frame function field;
a storage unit 502, further configured to store the feedback data frame in a message queue if the frame function field is a diagnostic data frame instruction; and storing the feedback data frame in a read queue under the condition that the frame function field is not the diagnosis data frame instruction.
In an optional implementation manner, the target group device information further includes an identifier of the target device to be diagnosed and a device handle of a USB interface connected to the target device to be diagnosed;
a determining unit 506, further configured to determine a target device handle of a USB interface connected to the device to be diagnosed that sends the feedback data frame;
a query unit 508, configured to query, in the N sets of device information, an identifier of a device to be diagnosed corresponding to the target device handle, to obtain an identifier of the target device to be diagnosed;
an analyzing unit 507, configured to analyze the feedback data frame to obtain the frame function field, the data field, and the protocol identifier field;
the storage unit 502 is specifically configured to store the frame function field, the data field, the identifier of the target device to be diagnosed, and the protocol identifier field as a set of data in the message queue.
In an optional implementation manner, the parsing unit 507 is further configured to, after the storage unit stores the frame function field, the data field, the identifier of the target device to be diagnosed, and the protocol identifier field as a group of data in the message queue, parse the channel value to obtain the identifier of the target device to be diagnosed and the target protocol identifier;
an obtaining unit 503, further configured to obtain at least one set of data matching the identifier of the target device to be diagnosed and the target protocol identifier from the message queue; the above-mentioned failure diagnosis device further includes:
an extracting unit 509, configured to extract a data portion from the at least one set of data.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a fault diagnosis device according to an embodiment of the present application, including: at least one processor 601, such as a Central Processing Unit (CPU), at least one memory 602, an input output interface 603, and a bus 604. The bus 604 may be a set of parallel data lines for interconnecting the processor 601, the memory 602, and the input/output interface 603; the memory 602 may be a Random Access Memory (RAM) or a non-volatile memory (ROM), such as at least one Read Only Memory (ROM).
Specifically, the input/output interface 603 communicates with a plurality of devices to be diagnosed under the control of the processor 601.
Specifically, the memory 602 may store program instructions, and the processor 1001 may be configured to call the program instructions to execute the method shown in fig. 1 to 4. The processor 601 may implement the functions of the units in fig. 5 except for the transmitting unit 505 and the receiving unit 508. The input/output interface 603 can implement the functions of the transmitting unit 505 and the receiving unit 508 in fig. 5.
Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program instructing associated hardware, the program may be stored in a computer-readable storage medium, which includes read-only memory (ROM), Random Access Memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, magnetic disk storage, tape storage, or any other medium readable by a computer that can be used to carry or store data.
The fault diagnosis method and the related device disclosed in the embodiments of the present application are described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the embodiments above is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific embodiments and the application range may be changed. In view of the above, the description should not be taken as limiting the application.
Claims (10)
1. A fault diagnosis method, comprising:
the fault diagnosis device scans N equipment to be diagnosed connected with N interfaces to obtain N groups of equipment information; the N interfaces correspond to the N devices to be diagnosed one by one, the N sets of device information correspond to the N devices to be diagnosed one by one, any set of device information includes information required by the fault diagnosis device to realize communication with the device to be diagnosed corresponding to the any set of device information, and N is an integer greater than 1;
the fault diagnosis device stores M groups of sending information to be sent to the N devices to be diagnosed to a sending queue; m is an integer greater than 1;
the fault diagnosis device acquires target group sending information to be sent in the sending queue, wherein the target group sending information comprises data to be sent to target equipment to be diagnosed;
the fault diagnosis device generates a target data frame according to the target group equipment information and the target group sending information; the target group device information is a group of device information corresponding to the target device to be diagnosed in the N groups of device information, and the target group sending information further includes a target protocol identifier of a target fault diagnosis protocol supported by the target device to be diagnosed;
and the fault diagnosis device sends the target data frame to the target equipment to be diagnosed.
2. The method according to claim 1, wherein before the fault diagnosis apparatus stores M groups of transmission information to be transmitted to the N devices to be diagnosed in a transmission queue, the method further comprises:
the fault diagnosis device obtains the target protocol identification;
the fault diagnosis device generates the target group sending information comprising the identification of the target equipment to be diagnosed, the target protocol identification and the initial data; the initial data is data to be sent to the target diagnostic device.
3. The method of claim 2, wherein after the fault diagnosis device obtains the target protocol identification, the method further comprises:
the fault diagnosis device determines a channel value of a channel which communicates with the target equipment to be diagnosed through the target fault diagnosis protocol according to the identification of the target equipment to be diagnosed and the identification of the target protocol;
the generating, by the fault diagnosis apparatus, the target group transmission information including the identifier of the target device to be diagnosed, the target protocol identifier, and the initial data includes:
the fault diagnosis device analyzes the channel value to obtain the identifier of the target equipment to be diagnosed and the target protocol identifier, and generates the target group sending information including the identifier of the target equipment to be diagnosed, the target protocol identifier and the initial data.
4. The method according to any one of claims 1 to 3, wherein before the fault diagnosis apparatus generates a target data frame based on target group device information and the target group transmission information, the method further comprises:
the fault diagnosis device obtains the identifier of the target equipment to be diagnosed, which is included in the target group sending information;
and the fault diagnosis device acquires the target group equipment information from the N groups of equipment information according to the identifier of the target equipment to be diagnosed.
5. The method according to claim 4, wherein after the fault diagnosis apparatus transmits the target data frame to the target device to be diagnosed, the method further comprises:
the fault diagnosis device receives a feedback data frame from the target equipment to be diagnosed; the feedback data frame is a data frame sent by the target equipment to be diagnosed responding to the target data frame;
the fault diagnosis device analyzes the feedback data frame to obtain a frame function field;
the fault diagnosis device stores the feedback data frame to a message queue under the condition that the frame function field is a diagnosis data frame instruction;
and the fault diagnosis device stores the feedback data frame to a read queue under the condition that the frame function field is not the diagnosis data frame instruction.
6. The method according to claim 5, wherein the target group device information further includes an identifier of the target device to be diagnosed and a device handle of a USB interface to which the target device to be diagnosed is connected; before the fault diagnosis device analyzes the feedback data frame to obtain a frame function field, the method further includes:
determining a target device handle of a USB interface connected with the device to be diagnosed and sending the feedback data frame;
inquiring the identifier of the equipment to be diagnosed corresponding to the handle of the target equipment in the N groups of equipment information to obtain the identifier of the target equipment to be diagnosed;
the fault diagnosis device analyzes the feedback data frame to obtain a frame function field, and the method comprises the following steps:
the fault diagnosis device analyzes the feedback data frame to obtain the frame function field, the data field and the protocol identification field;
the storing the feedback data frame to a message queue comprises:
and storing the frame function field, the data field, the identification of the target device to be diagnosed and the protocol identification field as a group of data to the message queue.
7. The method of claim 6, wherein after storing the frame function field, the data field, the identification of the target device to be diagnosed, and the protocol identification field as a set of data in the message queue, the method further comprises:
the fault diagnosis device analyzes the channel value to obtain the identifier of the target equipment to be diagnosed and the target protocol identifier;
acquiring at least one group of data matched with the identification of the target device to be diagnosed and the identification of the target protocol from the message queue;
a data portion is extracted from the at least one set of data.
8. A failure diagnosis device characterized by comprising:
the scanning unit is used for scanning N devices to be diagnosed connected with the N interfaces to obtain N groups of device information; the N interfaces correspond to the N devices to be diagnosed one by one, the N sets of device information correspond to the N devices to be diagnosed one by one, any set of device information includes information required by the fault diagnosis device to realize communication with the device to be diagnosed corresponding to the any set of device information, and N is an integer greater than 1;
the storage unit is used for storing M groups of sending information to be sent to the N devices to be diagnosed to a sending queue; m is an integer greater than 1;
an obtaining unit, configured to obtain target group sending information to be sent in the sending queue, where the target group sending information includes data to be sent to a target device to be diagnosed;
a generating unit configured to generate a target data frame according to target group device information and the target group information; the target group device information is a group of device information corresponding to the target device to be diagnosed in the N groups of device information, and the target group information includes a target protocol identifier of a target fault diagnosis protocol supported by the target device to be diagnosed;
and the sending unit is used for sending the target data frame to the target equipment to be diagnosed.
9. A computer-readable storage medium, in which a computer program is stored, the computer program comprising program instructions which, when executed by a processor of a mobile device, cause the processor to carry out the method of any one of claims 1 to 7.
10. An electronic device, comprising: a memory for storing a program; a processor for executing the program stored by the memory, the processor being configured to perform the method of any of claims 1 to 7 when the program is executed.
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