CN114442600B - Detection method and device using current clamp and computer equipment - Google Patents
Detection method and device using current clamp and computer equipment Download PDFInfo
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- CN114442600B CN114442600B CN202210360162.0A CN202210360162A CN114442600B CN 114442600 B CN114442600 B CN 114442600B CN 202210360162 A CN202210360162 A CN 202210360162A CN 114442600 B CN114442600 B CN 114442600B
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- 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
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
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Abstract
The invention discloses a detection method and a detection device utilizing a current clamp and computer equipment, which are applied to diagnostic equipment, wherein the detection method utilizing the current clamp comprises the following steps: acquiring vehicle information of a vehicle to be detected; the method comprises the following steps of connecting a fault device of a vehicle to be tested to read current and voltage data of the fault device; comparing and analyzing the current and voltage data with preset circuit standard data to generate a current and voltage analysis table; judging whether a circuit of a fault device of the vehicle to be tested has a fault according to the current-voltage analysis table; if so, searching historical diagnosis records of vehicles of the same type matched with the fault devices of the vehicles to be detected from a database to obtain a maintenance scheme; the invention can also use the current clamp to detect without professional maintenance personnel, has high detection efficiency, accurate fault judgment and correct maintenance scheme, and improves the use experience of users.
Description
Technical Field
The invention relates to the technical field of automobile diagnosis, in particular to a detection method and device using a current clamp and computer equipment.
Background
The circuit fault of the system inevitably occurs in the use process of the automobile, usually, a current clamp is adopted to read the current voltage value of a certain device, and then a maintenance worker judges whether the circuit of the device has the fault according to the current voltage value, but a certain standard value does not exist, and most of the current voltage value is judged to be normal according to the maintenance experience of the maintenance worker, so that whether the circuit of the automobile device is normal is judged.
Most of maintenance shops and 4S shops in the market use current clamps to detect device circuit faults by maintenance personnel, and when the experience of the maintenance personnel is insufficient or a user does not know whether the current voltage value is in a normal value, whether the device circuit of the automobile is normal or not cannot be judged, so that the efficiency is influenced.
Accordingly, the prior art is deficient and needs improvement.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a detection method and a detection device using a current clamp and computer equipment.
The technical scheme provided by the invention is a detection method by using a current clamp, which is applied to diagnostic equipment and comprises the following steps:
acquiring vehicle information of a vehicle to be detected;
the method comprises the following steps of connecting a fault device of a vehicle to be tested to read current and voltage data of the fault device;
comparing and analyzing the current voltage data with preset circuit standard current voltage data to generate a current voltage analysis chart; the current-voltage analysis chart comprises a standard current-time curve and a standard voltage-time curve corresponding to the circuit standard current-voltage data, and also comprises a current-time curve and a current voltage-time curve corresponding to the current-voltage data;
judging whether a circuit of a fault device of the vehicle to be tested has a fault according to the current-voltage analysis chart;
if the judgment result is yes, historical diagnosis records of vehicles of the same type matched with the fault devices of the vehicles to be detected are searched from the database to obtain a maintenance scheme.
Optionally, the specific step of obtaining the vehicle information of the vehicle to be tested includes:
carrying out communication connection with the vehicle to be detected to obtain a vehicle identification code;
and searching vehicle information related to the vehicle identification code in a database according to the vehicle identification code, wherein the vehicle information comprises information of a vehicle series, a vehicle type and a year money.
Optionally, the specific step of connecting to a faulty device of the vehicle to be tested to read current and voltage data of the faulty device includes:
connecting a fault device of a vehicle to be tested in an engine starting state through a current clamp to read current and voltage data at the moment and record the current and voltage data as first data;
and the current clamp is connected with a fault device of the vehicle to be tested in the state of closing the engine so as to read current and voltage data at the moment and record the current and voltage data as second data.
Optionally, a horizontal axis of the current-voltage analysis graph is a time axis, and a vertical axis of the current-voltage analysis graph is a current value or a voltage value; the standard current-time curve comprises a standard upper limit current-time curve and a standard lower limit current-time curve; the standard voltage-time curve comprises a standard upper limit voltage-time curve and a standard lower limit voltage-time curve.
Optionally, after the step of determining whether a circuit of the faulty device of the vehicle to be tested has a fault according to the current-voltage analysis chart, the method further includes:
if the judgment result is negative, the device circuit of the vehicle to be tested does not have a fault, and a normal prompt is output.
Optionally, if the determination result is yes, the specific steps of searching historical diagnosis records of vehicles of the same type matched with the fault device of the vehicle to be tested from the database to obtain a maintenance scheme include:
searching all historical diagnosis records of circuit faults of devices corresponding to vehicles of the same type as the vehicle to be detected from a database of diagnosis equipment; the database is pre-stored with standard current and voltage ranges of different application scenes of devices corresponding to each circuit system of a plurality of vehicles and maintenance schemes of different faults;
and searching a maintenance scheme matched with the current-voltage analysis chart from the historical diagnosis record, wherein the maintenance scheme comprises device fault description and maintenance suggestions.
The application also discloses a detection device using the current clamp, including:
the acquisition module is used for acquiring vehicle information of a vehicle to be detected;
the reading module is used for connecting a fault device of the vehicle to be tested so as to read current and voltage data of the fault device;
the analysis module is used for comparing and analyzing the current voltage data with preset circuit standard current voltage data to generate a current voltage analysis chart;
the judging module is used for judging whether a circuit of a fault device of the vehicle to be detected has a fault according to the current-voltage analysis chart;
and the searching module is used for searching the historical diagnosis records of the vehicles of the same type matched with the fault devices of the vehicles to be detected from the database if the judgment result is yes, so as to obtain a maintenance scheme.
The application also discloses a detection device using the current clamp, the search module further includes:
the first searching unit is used for searching all historical diagnosis records of the circuit faults of the devices corresponding to the vehicles of the same type as the vehicle to be detected from a database of the diagnosis equipment; the database is pre-stored with standard current and voltage ranges of different application scenes of devices corresponding to each circuit system of a plurality of vehicles and maintenance schemes of different faults;
and the second searching unit is used for searching a maintenance scheme matched with the current-voltage analysis chart from the historical diagnosis record, wherein the maintenance scheme comprises device fault description and maintenance suggestions.
The application also discloses a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the detection method using the current clamp as described above when executing the computer program.
The present application also discloses a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the detection method with current clamping as described above.
Has the advantages that: the method comprises the steps that a current clamp is adopted to send a read current voltage value to a diagnosis device, and the diagnosis device compares the current voltage value of a fault device of a vehicle to be tested with a preset standard voltage current value to be analyzed so as to obtain a current voltage analysis chart; the diagnostic equipment judges whether a circuit of a fault device has a fault according to the current-voltage analysis chart, if the circuit has the fault, a historical diagnosis record of the same device of the same type of automobile as the automobile to be detected can be searched in a database of the diagnostic equipment, and a correct maintenance scheme can be obtained according to the historical diagnosis record; the invention can also use the current clamp to detect without professional maintenance personnel, has high detection efficiency, accurate fault judgment and correct maintenance scheme, and improves the use experience of users.
Drawings
FIG. 1 is a schematic flow chart of a detection method using a current clamp according to the present invention;
FIG. 2 is a schematic structural diagram of an automatic upgrade device of the system of the present invention;
FIG. 3 is a schematic diagram of a computer device according to the present invention.
As shown in the figure: 10. an acquisition module; 20. a reading module; 30. an analysis module; 40. a judgment module; 50. and a searching module.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The use of the terms "fixed," "integrally formed," "left," "right," and the like in this specification is for illustrative purposes only, and elements having similar structures are designated by the same reference numerals in the figures.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention will be described in detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, a detection method using a current clamp is applied to a diagnostic device, the diagnostic device is in communication connection with an automobile, for example, the diagnostic device may be an OBD device, the OBD device is connected to an OBD interface of the automobile, the OBD interface is an interface externally provided by an OBD system in the automobile, the OBD device is connected to the automobile through the OBD interface of the automobile, an OBD connector is connected to the OBD interface of the automobile, and the OBD interface is remotely connected to the diagnostic device. The method comprises the following steps:
step S1, vehicle information of the vehicle to be detected is obtained;
step S2, connecting with a fault device of the vehicle to be tested to read current and voltage data of the fault device;
step S3, comparing and analyzing the current and voltage data with preset circuit standard current and voltage data to generate a current and voltage analysis chart;
step S4, judging whether a circuit of a fault device of the vehicle to be tested has a fault according to the current-voltage analysis chart;
and step S5, if the judgment result is yes, searching historical diagnosis records of vehicles of the same type matched with the fault device of the vehicle to be detected from a database to obtain a maintenance scheme.
As described in the foregoing steps S1-S5, when a device of the automobile fails, the failure problem cannot be immediately determined, that is, the vehicle information of the vehicle to be detected can be obtained through the diagnostic device, so as to obtain the vehicle information of the vehicle to be detected, thereby facilitating the subsequent detection of the automobile according to the vehicle information; then, the current clamp is connected with a device to be detected, current and voltage data are read and sent to the diagnosis equipment, and the diagnosis equipment is used for comparing and analyzing the current and voltage data with preset standard data to obtain a current and voltage analysis chart, so that a user can see visual comparison data; the diagnostic equipment judges whether the automobile device has a fault according to the current-voltage analysis chart, if so, historical diagnosis records of vehicles of the same type matched with the fault device of the vehicle to be detected can be searched from a database of the diagnostic equipment, the same case is found, and a more correct maintenance scheme is obtained; therefore, after the current clamp is used for detection, a fault problem can be found without being distinguished by professional maintenance personnel, multiple detections are not needed, time is saved, audiences are wider, the current clamp is not limited to professional maintenance personnel, labor cost is reduced, and the diagnosis accuracy is also improved.
Optionally, the specific step of obtaining the vehicle information of the vehicle to be tested includes:
step S11, performing communication connection with the vehicle to be detected to obtain a vehicle identification code;
and step S12, searching vehicle information associated with the vehicle identification code in a database according to the vehicle identification code, wherein the vehicle information comprises information of a vehicle series, a vehicle type and a year money.
As described in the above steps S11 and S12, the vehicle identification code is read from the body computer of the vehicle to be tested by establishing a communication connection with the vehicle to be tested, and the vehicle information associated with the vehicle identification code is searched for in the data of the diagnostic device according to the vehicle identification code.
In this embodiment, the database stores in advance vehicle information of a main-flow automobile on the market, which is collected by a worker.
In this embodiment, the Vehicle Identification Number (or frame Number), referred to as a Vehicle Identification Number for short, is a set of seventeen letters or numbers, is used for a unique set of numbers on the automobile, and can identify the manufacturer, engine, chassis serial Number, and other performance data of the automobile. The vehicle identification code can be found in positions such as a vehicle driving license, a motor vehicle driving license, a vehicle insurance policy, positions below a left vehicle door B column and a right vehicle door B column, positions of left and right shock absorption wheel rotations (or depths) of an engine compartment, a front firewall of the driving cabin, a foot bottom plate of a secondary driving cabin, a left lower corner of a front windshield, an instrument panel and the like.
Optionally, the specific step of connecting to a faulty device of the vehicle to be tested to read current and voltage data of the faulty device includes:
step S21, connecting a fault device of a vehicle to be tested in the state of starting an engine through a current clamp so as to read current and voltage data at the moment and record the data as first data;
and step S22, connecting the fault device of the vehicle to be tested in the state of closing the engine through the current clamp to read the current and voltage data at the moment and record the current and voltage data as second data.
As described in the above steps S21-S22, when a faulty device of the vehicle to be tested is detected, the current clamp needs to be used to read the current and voltage, the detection can be performed movably, when a certain position needs to be detected, the current clamp is used to move to this position, and the current and voltage data can be read conveniently and quickly, and simultaneously the current and voltage data of the device under different scenes needs to be read to ensure the accuracy of the data, and after the data is read, the current and voltage data are sent to the diagnostic device, and the diagnostic device processes the subsequent work.
In the embodiment, the current clamp consists of two transformers, a display meter, a change-over switch, a jaw, a wrench and a handle. Before the current clamp is used, the current gear needs to be adjusted, the current value can be roughly calculated, the gear can be determined, and the measuring position can be determined. The location of the measurement must be the exposed wire, the insulated wire is not detectable. The spanner is pressed to open the jaw, so that the electric wire penetrates through the iron core of the mutual inductor, the dial pointer can be seen to move, and the numerical value can be read out at the position of the pointer fixed point.
Optionally, a horizontal axis of the current-voltage analysis graph is a time axis, and a vertical axis of the current-voltage analysis graph is a current value or a voltage value; the standard current-time curve comprises a standard upper limit current-time curve and a standard lower limit current-time curve; the standard voltage-time curve comprises a standard upper limit voltage-time curve and a standard lower limit voltage-time curve.
After receiving the current and voltage data, the diagnostic equipment compares the current and voltage data with preset standard current and voltage data of the same device and generates a current and voltage analysis chart. The horizontal axis of the current-voltage analysis chart is the time axis (e.g. using)
t) is shown, the vertical axis of the current-voltage analysis chart is the current value or the voltage value, namely, the current-time curve chart and the voltage-time curve chart are combined and displayed in one current-voltage analysis chart. The current-voltage analysis chart comprises a standard upper limit current-time curve, a standard lower limit current-time curve, a standard upper limit voltage-time curve and a standard lower limit voltage-time curve, so that the current-time curve corresponding to the current-voltage data can be compared with the standard upper limit current-time curve and the standard lower limit current-time curve in real time to determine whether an abnormal current value exists and a time point corresponding to the abnormal current value. Similarly, the current voltage-time curve corresponding to the current voltage data can be compared with the standard upper limit voltage-time curve and the standard lower limit voltage-time curve in real time to determine whether an abnormal voltage value exists and a time point corresponding to the abnormal voltage value. The current and voltage analysis chart can be used for analyzing the current and voltage state of the device of the vehicle to be tested, whether the current and voltage state is within a normal interval range or not, and the diagnosis equipment can conveniently perform subsequent operation according to the current and voltage analysis chart.
Optionally, after the step of determining whether a circuit of the fault device of the vehicle to be tested has a fault according to the current-voltage analysis chart, the method further includes:
and step S41, if the judgment result is negative, indicating that the device circuit of the vehicle to be tested has no fault, and outputting a normal prompt.
As described in step S41, when the diagnostic device determines that the current-voltage data is correct, that is, the device circuit of the vehicle under test is not faulty, a normal prompt is output, and the detection is finished.
Optionally, if the determination result is yes, the specific steps of searching historical diagnosis records of vehicles of the same type matched with the fault device of the vehicle to be tested from the database to obtain a maintenance scheme include:
s51, searching all historical diagnosis records of circuit faults of devices corresponding to vehicles of the same type as the vehicle to be detected from a database of diagnosis equipment; the system comprises a database, a plurality of sensors and a plurality of sensors, wherein the database is pre-stored with standard current and voltage ranges of devices corresponding to various circuit systems of a plurality of vehicles in different application scenes and maintenance schemes of different faults;
and step S52, searching a maintenance scheme matched with the current-voltage analysis chart from the historical diagnosis record, wherein the maintenance scheme comprises device fault description and maintenance suggestions.
As described in the above steps S51 and S52, when the diagnostic device determines that the current-voltage data of a device of the vehicle under test is incorrect, the fault can be resolved by searching a solution in the data of the diagnostic device; according to the vehicle information and the detected devices, historical diagnosis records of the same type of vehicles and the same devices are searched in the diagnosis database, then maintenance schemes matched with the current-voltage analysis chart are searched in the historical diagnosis records, the fault location and the fault problem handling can be found according to the maintenance schemes, the diagnosis efficiency and the diagnosis accuracy are improved, and the method and the device can be applied to various working occasions.
Example two:
referring to fig. 2, the present application further discloses a detection apparatus using a current clamp, including:
the acquisition module 10 is used for acquiring vehicle information of a vehicle to be detected;
the reading module 20 is used for connecting with a fault device of the vehicle to be tested so as to read current and voltage data of the fault device;
the analysis module 30 is configured to perform comparison analysis on the current-voltage data and preset circuit standard current-voltage data to generate a current-voltage analysis chart;
the judging module 40 is used for judging whether a circuit of a fault device of the vehicle to be detected has a fault according to the current-voltage analysis chart;
and the searching module 50 is used for searching the historical diagnosis records of the vehicles of the same type matched with the fault devices of the vehicles to be detected from the database to obtain a maintenance scheme if the judgment result is yes.
The present application further discloses a detection apparatus using a current clamp, the search module 50 further includes:
the first searching unit is used for searching all historical diagnosis records of the circuit faults of the devices corresponding to the vehicles of the same type as the vehicle to be detected from a database of the diagnosis equipment; the database is pre-stored with standard current and voltage ranges of different application scenes of devices corresponding to each circuit system of a plurality of vehicles and maintenance schemes of different faults;
and the second searching unit is used for searching a maintenance scheme matched with the current-voltage analysis chart from the historical diagnosis record, wherein the maintenance scheme comprises device fault description and maintenance suggestions.
Further, the obtaining module 10 further includes:
the communication unit is used for carrying out communication connection with the vehicle to be detected so as to acquire a vehicle identification code;
and the third searching unit is used for searching the vehicle information related to the vehicle identification code in a database according to the vehicle identification code, wherein the vehicle information comprises information of a vehicle series, a vehicle type and a year money.
Further, the reading module 20 further includes:
the first reading unit is used for connecting a fault device of a vehicle to be tested in an engine starting state through a current clamp so as to read current and voltage data at the moment and record the data as first data;
and the second reading unit is used for connecting a fault device of the vehicle to be tested in the state of closing the engine through the current clamp so as to read current and voltage data at the moment and record the data as second data.
Further, the analysis module 30 further includes:
and the analysis unit is used for comparing and analyzing the current-voltage data with preset circuit standard current-voltage data to generate a current-voltage analysis chart, wherein the head of the current-voltage analysis chart is a current/voltage value, is higher/lower than a standard value and is within a current/voltage interval range.
Further, the judging unit further includes:
and the display unit is used for indicating that the device circuit of the vehicle to be tested has no fault and outputting a normal prompt if the judgment result is negative.
Example three:
referring to fig. 3, the present application further discloses a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the detection method using current clamp as described above when executing the computer program.
The present application also discloses a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the detection method with current clamping as described above.
Has the advantages that: the method comprises the steps that a current clamp is adopted to send a read current voltage value to a diagnosis device, and the diagnosis device compares the current voltage value of a fault device of a vehicle to be tested with a preset standard voltage current value to be analyzed so as to obtain a current voltage analysis chart; the diagnostic equipment judges whether a circuit of a fault device has a fault according to the current-voltage analysis chart, if the circuit has the fault, a historical diagnosis record of the same device of the same type of automobile as the automobile to be detected can be searched in a database of the diagnostic equipment, and a correct maintenance scheme can be obtained according to the historical diagnosis record; the invention can also use the current clamp to detect without professional maintenance personnel, has high detection efficiency, accurate fault judgment and correct maintenance scheme, and improves the use experience of users.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus, device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only a logical division, and there may be other divisions when the actual implementation is performed, or units having the same function may be grouped into one unit, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing an electronic device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only processor 5070 (ROM), a magnetic disk or an optical disk, and various media capable of storing program codes.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; further, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.
Claims (8)
1. A detection method using a current clamp is applied to diagnostic equipment and is characterized in that: the method comprises the following steps:
acquiring vehicle information of a vehicle to be detected;
the method comprises the steps of connecting a fault device of a vehicle to be tested to read current and voltage data of the fault device;
comparing and analyzing the current voltage data with preset circuit standard current voltage data to generate a current voltage analysis chart; the current-voltage analysis chart comprises a standard current-time curve and a standard voltage-time curve corresponding to the circuit standard current-voltage data, and also comprises a current-time curve and a current voltage-time curve corresponding to the current-voltage data;
judging whether a circuit of a fault device of the vehicle to be tested has a fault according to the current-voltage analysis chart;
if so, searching historical diagnosis records of vehicles of the same type matched with the fault devices of the vehicles to be detected from a database to obtain a maintenance scheme;
if the judgment result is yes, historical diagnosis records of the vehicles of the same type matched with the fault devices of the vehicles to be detected are searched from a database to obtain a maintenance scheme, and the method comprises the following steps:
searching all historical diagnosis records of circuit faults of devices corresponding to vehicles of the same type as the vehicle to be detected from a database of diagnosis equipment; the database is pre-stored with standard current and voltage ranges of different application scenes of devices corresponding to each circuit system of a plurality of vehicles and maintenance schemes of different faults;
searching a maintenance scheme matched with the current-voltage analysis chart from the historical diagnosis record, wherein the maintenance scheme comprises device fault description and maintenance suggestions;
the method comprises the following specific steps of connecting a fault device of a vehicle to be tested to read current and voltage data of the fault device, wherein the specific steps comprise:
connecting a fault device of a vehicle to be tested in an engine starting state through a current clamp to read current and voltage data at the moment and recording the data as first data;
and the current clamp is connected with a fault device of the vehicle to be tested in the state of closing the engine so as to read current and voltage data at the moment and record the current and voltage data as second data.
2. The method for detecting using a current clamp according to claim 1, wherein the step of obtaining vehicle information of the vehicle under test comprises:
carrying out communication connection with the vehicle to be detected to obtain a vehicle identification code;
and searching vehicle information related to the vehicle identification code in a database according to the vehicle identification code, wherein the vehicle information comprises information of a vehicle series, a vehicle type and a year money.
3. The detection method using a current clamp according to claim 1, wherein a horizontal axis of the current-voltage analysis chart is a time axis, and a vertical axis of the current-voltage analysis chart is a current value or a voltage value; the standard current-time curve comprises a standard upper limit current-time curve and a standard lower limit current-time curve; the standard voltage-time curve comprises a standard upper limit voltage-time curve and a standard lower limit voltage-time curve.
4. The method for detecting using a current clamp according to claim 1, wherein after the step of determining whether the circuit of the faulty device of the vehicle under test has a fault according to the current-voltage analysis chart, the method further comprises:
if the judgment result is negative, the device circuit of the vehicle to be tested does not have a fault, and a normal prompt is output.
5. A sensing device utilizing current clamping, comprising:
the acquisition module is used for acquiring vehicle information of a vehicle to be detected;
the reading module is used for being connected with a fault device of the vehicle to be tested so as to read current and voltage data of the fault device;
the analysis module is used for comparing and analyzing the current and voltage data with preset circuit standard data to generate a current and voltage analysis chart;
the judging module is used for judging whether a circuit of a fault device of the vehicle to be detected has a fault according to the current-voltage analysis chart;
the searching module is used for searching historical diagnosis records of vehicles of the same type matched with the fault devices of the vehicles to be detected from a database to obtain a maintenance scheme if the judgment result is yes;
the reading module further includes:
the first reading unit is used for being connected with a fault device of a vehicle to be tested in the state of starting an engine through a current clamp so as to read current and voltage data at the moment and record the current and voltage data as first data;
and the second reading unit is used for being connected with a fault device of the vehicle to be tested in the state of closing the engine through the current clamp so as to read the current and voltage data at the moment and record the current and voltage data as second data.
6. The current clamp utilizing sensing device of claim 5, wherein said lookup module further comprises:
the first searching unit is used for searching all historical diagnosis records of the circuit faults of the devices corresponding to the vehicles of the same type as the vehicle to be detected from a database of the diagnosis equipment; accurate current and voltage values of different application scenes of devices corresponding to each circuit system of the main flow vehicle and maintenance schemes of different faults are stored in the database in advance;
and the second searching unit is used for searching a maintenance scheme matched with the current-voltage analysis chart from the historical diagnosis record, wherein the maintenance scheme comprises device fault description and maintenance suggestions.
7. A computer arrangement comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, carries out the steps of the detection method with current clamp according to any one of claims 1 to 4.
8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the detection method with current clamp according to any one of claims 1 to 4.
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