CN112068030A - Fault detection method, equipment, storage medium and device of grounding system - Google Patents
Fault detection method, equipment, storage medium and device of grounding system Download PDFInfo
- Publication number
- CN112068030A CN112068030A CN202011047381.0A CN202011047381A CN112068030A CN 112068030 A CN112068030 A CN 112068030A CN 202011047381 A CN202011047381 A CN 202011047381A CN 112068030 A CN112068030 A CN 112068030A
- Authority
- CN
- China
- Prior art keywords
- grounding
- fault
- current value
- total current
- points
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
- G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a fault detection method, equipment, a storage medium and a device of a grounding system, relating to the method comprising the following steps: the method comprises the steps of obtaining all load input current values in a grounding system and first total current values of all grounding points, judging faults in the grounding points according to the load input current values and the first total current values, then disconnecting one grounding point from a vehicle body, obtaining second total current value sets of other grounding points, and judging faults between the grounding points according to the first total current values and the second total current value sets, so that the faults of the grounding system are comprehensively detected. In the prior art, the fault detection of the grounding system cannot be realized comprehensively, but the embodiment detects the fault in the grounding point firstly and then detects the fault between the grounding points, so that the fault detection of the grounding system is realized comprehensively.
Description
Technical Field
The invention relates to the technical field of vehicle testing, in particular to a fault detection method, equipment, a storage medium and a device of a grounding system.
Background
The reasonable automobile grounding system can effectively realize that the current returns to the cathode of the storage battery from the anode of the storage battery through the anode lead of the electrical appliance, the cathode lead of the electrical appliance and the automobile body metal plate, thereby economically, safely and efficiently ensuring the normal work of the automobile electrical appliance. The unreasonable design of the grounding system may cause the phenomena of unstable voltage of the electric appliance, electromagnetic interference of the controller, overcurrent of the wire harness and the like, which causes vehicle faults such as abnormal work of the electric appliance or burnout of the wire harness and the like. In the stages of automobile research and development design, maintenance and repair, the defects of an automobile grounding system can be timely and effectively found through full and comprehensive grounding tests, faults are eliminated, and product safety risks are effectively avoided.
At present, grounding analysis and fault troubleshooting are mainly carried out in the industry by carrying out a grounding point and storage battery inter-negative voltage drop test or a grounding point grounding failure current test, the test items are single, and even if the two tests are carried out, the problems cannot be fully and comprehensively solved.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a fault detection method, equipment, a storage medium and a device of a grounding system, and aims to solve the technical problem that the problem of the grounding system cannot be fully and comprehensively checked in the prior art.
In order to achieve the above object, the present invention provides a fault detection method for a grounding system, including the steps of:
acquiring load input current values of vehicle loads contained in all grounding points in a grounding system and first total current values of all the grounding points;
traversing all grounding points, and acquiring a target input current value of a load contained in the traversed current grounding point from the load input current values;
judging whether the current grounding point has a fault according to the target input current value and the first total current value so as to obtain a first fault judgment result;
keeping the normal working state of the load contained in the current grounding point, disconnecting the current grounding point from the vehicle body to obtain a second total current value of other grounding points and returning to the step of traversing all the grounding points;
when the traversal is finished, acquiring a first fault judgment result set and a second total current value set;
judging whether faults exist among all grounding points according to the first total current value and the second total current value set so as to obtain a second fault judgment result set;
and obtaining a fault detection result of the grounding system according to the first fault judgment result set and the second fault judgment result set.
Preferably, the step of determining whether the current grounding point has a fault according to the target input current value and the first total current value to obtain a first fault determination result includes:
summing the target input current values to obtain target input current sum values;
and judging whether the grounding point has a fault according to the target input current sum value and the first total current value so as to obtain a first fault judgment result.
Preferably, the step of determining whether the ground point has a fault according to the target input current sum value and the first total current value to obtain a first fault determination result includes:
determining a target total current value of the current grounding point according to the first total current value;
and judging whether the grounding point has a fault according to the target input current sum value and the target total current value, and acquiring a first fault judgment result.
Preferably, before the step of determining whether the current grounding point has a fault according to the target input current value and the first total current value to obtain a first fault determination result, the method further includes:
acquiring voltage values of two ends of a vehicle load contained in a current grounding point;
judging whether a fault vehicle load exists in vehicle loads contained in a current grounding point according to the load input current value and the voltage value so as to obtain a third fault judgment result;
correspondingly, the step of obtaining the first fault determination result set and the second total current value set at the end of traversal includes:
when the traversal is finished, acquiring a first fault judgment result set, a second total current value set and a third fault judgment result set;
correspondingly, the step of obtaining the fault detection result of the grounding system according to the first fault judgment result set and the second fault judgment result set includes:
and obtaining a fault detection result of the grounding system according to the first fault judgment result set, the second fault judgment result set and the third fault judgment result set.
Preferably, the step of determining whether a fault exists between all the grounding points according to the first total current value and the second total current value set to obtain a second fault determination result set includes:
acquiring target first total current values corresponding to the other grounding points according to the first total current values;
and judging whether faults exist among all grounding points according to the target first total current value and the second total current value set, and acquiring a second fault judgment result set.
Preferably, the step of determining whether a fault exists between all the grounding points according to the target first total current value and the second total current value set, and obtaining a second fault determination result set includes:
comparing the second total current value set with the target first total current value to obtain a total current value change result;
and judging whether faults exist among all grounding points according to the total current value change result so as to obtain a second fault judgment result set.
Preferably, the step of traversing all the grounding points and obtaining a target input current value of the load included in the traversed current grounding point from the load input current values includes:
traversing all the grounding points to obtain the number of the current grounding points;
comparing the number of the current grounding points with the number of preset grounding points to obtain a comparison result of the number of the grounding points;
grouping the current grounding points according to the comparison result, and acquiring a grouping result;
and acquiring a target input current value of the load contained in the traversed current grounding point from the load input current values according to the grouping result. .
Furthermore, in order to achieve the above object, the present invention further proposes a fault detection device of a grounding system, which comprises a memory, a processor and a fault detection program of the grounding system stored on the memory and operable on the processor, wherein the fault detection program of the grounding system is configured to implement the steps of the fault detection method of the grounding system as described above.
Furthermore, in order to achieve the above object, the present invention further proposes a storage medium having stored thereon a fault detection program of a grounding system, which when executed by a processor, implements the steps of the fault detection method of a grounding system as described above.
In addition, in order to achieve the above object, the present invention further provides a fault detection device of a grounding system, including: the device comprises a current value acquisition module, a grounding point traversal module, a first fault judgment module, a circuit cutting module, a set acquisition module, a second fault judgment module and a detection result acquisition module;
the current value acquisition module is used for acquiring load input current values of vehicle loads contained in all grounding points in the grounding system and first total current values of all the grounding points;
the grounding point traversing module is used for traversing all grounding points and acquiring a target input current value of a load contained in the traversed current grounding point from the load input current value;
the first fault judgment module is used for judging whether the current grounding point has a fault according to the target input current value and the first total current value so as to obtain a first fault judgment result;
the circuit cutting-off module is used for keeping the normal working state of a load contained in the current grounding point, disconnecting the current grounding point from the vehicle body, so as to obtain a second total current value of other grounding points and return to the step of traversing all the grounding points;
the set acquisition module is used for acquiring a first fault judgment result set and a second total current value set when traversal is finished;
the second fault judgment module is used for judging whether faults exist among all grounding points according to the first total current value and the second total current value set so as to obtain a second fault judgment result set;
and the detection result acquisition module is used for acquiring the fault detection result of the grounding system according to the first fault judgment result set and the second fault judgment result set.
The invention provides a fault detection method, equipment, a storage medium and a device of a grounding system, which realize the comprehensive detection of the faults of the grounding system by acquiring all load input current values and first total current values of all grounding points in a system to be detected, judging the faults in the grounding points according to the load input current values and the first total current values, then stopping supplying power to one grounding point, acquiring second total current value sets of other grounding points, and judging the faults between the grounding points according to the first total current values and the second total current value sets. In the prior art, the fault detection of the grounding system cannot be realized comprehensively, but the embodiment detects the fault in the grounding point firstly and then detects the fault between the grounding points, so that the fault detection of the grounding system is realized comprehensively.
Drawings
Fig. 1 is a schematic structural diagram of a fault detection device of a grounding system of a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a fault detection method of the grounding system according to a first embodiment of the present invention;
fig. 3 is a schematic flow chart of a fault detection method of the grounding system according to a second embodiment of the present invention;
fig. 4 is a schematic flow chart of a fault detection method of the grounding system according to a third embodiment of the present invention;
fig. 5 is a schematic flow chart of a fourth embodiment of the fault detection method of the grounding system according to the present invention;
fig. 6 is a block diagram showing the structure of a fault detection device of the grounding system according to the first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a fault detection device of a grounding system in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the fault detection apparatus of the grounding system may include: a processor 1001, such as a central processing unit, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a display screen, and the optional user interface 1003 may further include a standard wired interface, a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a wireless interface. The memory 1005 may be a high speed random access memory or a stable memory such as a disk memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the fault detection device of the grounding system, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in FIG. 1, a memory 1005, identified as one type of computer storage medium, may include an operating system, a network communication module, a user interface module, and a fault detection program for a grounding system.
In the grounding system detection device shown in fig. 1, the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the fault detection device of the grounding system calls a fault detection program of the grounding system stored in the memory 1005 through the processor 1001 and executes the fault detection method of the grounding system provided by the embodiment of the present invention.
Based on the above hardware structure, an embodiment of the fault detection method of the grounding system of the present invention is provided.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the fault detection method of the grounding system of the present invention, and the first embodiment of the fault detection method of the grounding system of the present invention is provided.
In a first embodiment, the grounding system detection method comprises the following steps:
step S10: load input current values of vehicle loads contained in all grounding points in the grounding system and first total current values of all the grounding points are obtained.
It should be understood that the implementation subject of the present embodiment may be a grounding system detection device that includes a current detection module and a voltage detection module, such as a current sensor and a voltage penetration probe.
It should be noted that the ground means that the neutral point of the power system and the electrical device, the exposed conductive portion of the electrical equipment, and the external conductive portion of the device are connected to the ground via conductors. The grounding system can be divided into a working grounding system, a lightning protection grounding system and a protection grounding system, and the grounding system refers to a vehicle internal grounding system in the embodiment. The load input current value is the current value of the input ends of all loads in the system to be detected, the first total current value of the grounding point is the main current value of the grounding point circuit, and under the condition of no fault, the sum of the current values of the load input ends of all the loads in the grounding point is equal to the first total current value.
It can be understood that, in the present embodiment, the load input current value of the vehicle load included in all the grounding points in the grounding system and the first total current value of all the grounding points are obtained through the acquisition and transmission of the current sensor.
Step S20: and traversing all grounding points, and acquiring a target input current value of the load contained in the traversed current grounding point from the load input current values.
It should be noted that traversal is a non-repeated selection process for all elements in the range, and the selected elements are not put back in the range. The target input current value is a set of load input current values of loads contained in the current grounding point, and the input current value of each load contained in the current grounding point is obtained and is sorted to obtain a target input current value set.
It can be understood that, after all the grounding points are traversed to obtain the current grounding point, the current value of the input end of the load included in the current grounding point is extracted from the current value set of the input ends of all the loads in the system to be detected as the target input current value.
Step S30: and judging whether the current grounding point has a fault according to the target input current value and the first total current value so as to obtain a first fault judgment result.
It should be noted that the first fault is a fault in the grounding point, and the corresponding first fault determination result is a fault determination result in the current grounding point.
It will be appreciated that the value of the input current into the present access point may be determined from the target value of the input current, and the value of the output current from the present access point may be determined from the first total current value, the value of the input current to the present ground point being equal to the value of the input current irrespective of errors and heat losses. If a judgment result that the input current value is equal to the input current value is obtained, no fault exists in the current grounding point; if the judgment result that the input current value is not equal to the input current value is obtained, a fault exists in the current grounding point, for example, a branch in the grounding point is directly grounded, so that part of current directly runs off through the branch.
Step S40: and keeping the normal working state of the load contained in the current grounding point, disconnecting the current grounding point from the vehicle body to obtain a second total current value of other grounding points and returning to the step of traversing all the grounding points.
It should be noted that the other grounding points are all grounding points not including the current grounding point, and the second total current value is a main current value in the other grounding points, that is, an output current value of the other grounding points. In this embodiment, the connection between the current ground point and the vehicle body can be disconnected by disconnecting the air switch, or in other manners, which is not specifically required herein.
It can be understood that the normal working state of the load contained in the current grounding point is maintained, the current grounding point is disconnected from the vehicle body, and the second total current value of other grounding points is obtained through the current sensor in the whole system to be detected. After the air switch of the present ground point is turned off, the output current of the present ground point is zero. After the play second total current value is recorded, the process returns to step S20, the traversal is continued, a new current grounding point is obtained, and the above determination operation is repeated.
Step S50: and when the traversal is finished, acquiring a first fault judgment result set and a second total current value set.
It should be noted that the first fault determination result set is a determination result set obtained after all the grounding points are determined, and the second total current value set is a set of second total current values obtained by opening the air switch of one grounding point at a time.
It can be understood that after the traversal is finished, all the grounding points in the system to be detected perform fault judgment in the grounding points, second total current values of other grounding points after the air switch is disconnected each time are recorded, the faults in each grounding point are counted to obtain a first fault judgment result set, and the recorded second total current values are sorted to obtain a second total current value set.
Step S60: and judging whether faults exist among all grounding points according to the first total current value and the second total current value set so as to obtain a second fault judgment result set.
It should be noted that the second fault is a fault between all the grounding points, and the corresponding second fault determination result is a fault determination result between the grounding points.
It will be appreciated that the second set of total current values is a set of grounding points corresponding to the first total current value. When one air switch is disconnected, other grounding points can obtain a second total current value, and after traversal is finished, each grounding point corresponds to a second total current value set.
It will be appreciated that each of the second set of total current values for any one of the grounding points is equal to the first total current value, irrespective of losses. For example, in a specific determination process, if a certain second total current value of the grounding point is different from the first total current value, and the second total current value is greatly changed compared with the first total current value, the current in the grounding point for disconnecting the air switch may flow out through the grounding point, and a fault must exist between the grounding point and the grounding point for disconnecting the air switch.
Step S70: and obtaining a fault detection result of the grounding system according to the first fault judgment result set and the second fault judgment result set.
In the present embodiment, the grounding point is used as a basis, and the fault detection result of the grounding system is a fault detection result between the fault detection result in the grounding point and the grounding point.
In this embodiment, a method for detecting a fault of a grounding system is provided, which includes obtaining an input current value of all loads in a system to be detected and a first total current value of all grounding points, determining a fault in the grounding point according to the input current value of the loads and the first total current value, disconnecting one grounding point from a vehicle body, obtaining a second total current value set of other grounding points, and determining a fault between the grounding points according to the first total current value and the second total current value set, thereby implementing a comprehensive detection of the fault of the grounding system. In the prior art, the fault detection of the grounding system cannot be realized comprehensively, but the embodiment detects the fault in the grounding point firstly and then detects the fault between the grounding points, so that the fault detection of the grounding system is realized comprehensively.
Referring to fig. 3, fig. 3 is a schematic flow chart of a second embodiment of the fault detection method of the grounding system according to the present invention, and the second embodiment of the fault detection method of the grounding system according to the present invention is proposed based on the first embodiment shown in fig. 2.
In the second embodiment, before the step S30, the method further includes:
step S301': and acquiring the voltage values of the two ends of the vehicle load contained in the current grounding point.
In the present embodiment, the voltage value across the vehicle load included in the current grounding point is detected by the voltage penetration probe of the grounding system detection device.
Step S302': and judging whether a fault vehicle load exists in the vehicle loads contained in the current grounding point according to the load input current value and the voltage value so as to obtain a third fault judgment result.
It should be noted that the third failure is a failure of the vehicle load, and the corresponding third failure determination result is a determination result of the vehicle load failure.
It can be understood that, in the present embodiment, the fault determination is performed on the vehicle load according to the basic circuit principle through the voltage value at the two ends of the vehicle load and the current value input by the vehicle load, so as to obtain the fault result of the vehicle load.
The step S30 includes:
step S301: and summing the target input current values to obtain target input current sum values.
The target input current value is a current value input by each vehicle load included in the current grounding point, and a plurality of vehicle loads are included in one grounding point. The target input current sum is the sum of the target input currents for all vehicle loads within the present ground point.
It will be understood that summing the target input current values for the vehicle load is adding each target input current value to obtain a target input current sum, for example, in a circuit, obtaining the sum of all branch currents, which is compared with the main line current to determine the state of the circuit, and adding the current values of each branch when obtaining the sum of all branch currents.
Step S302: and determining a target total current value of the current grounding point according to the first total current value.
It should be noted that the target total current value is the total current value of the current grounding point, i.e. the current value measured by the grounding point.
It is understood that, according to the traversed current grounding point, a total current value corresponding to the current grounding point is extracted from the first total current value as a target total current value.
Step S303: and judging whether the grounding point has a fault according to the target input current sum value and the target total current value, and acquiring a first fault judgment result.
It should be noted that, according to the basic principle of the circuit, it can be known that the current value of the input end of one circuit is equal to the current value of the output end, the sum of the target input current values of each vehicle load is compared with the total current value of the grounding point, if the two values are equal within the error allowable range, it is determined that no fault exists in the current grounding point, otherwise, it is determined that a fault exists in the current grounding point, and the fault result is recorded.
Accordingly, step S50 is step S50': and when the traversal is finished, acquiring a first fault judgment result set, a second total current value set and a third fault judgment result set.
It can be understood that when traversal is finished, all the grounding points in the system to be detected are subjected to vehicle load fault judgment and fault judgment in the grounding points, which are contained in all the grounding points, second total current values of other grounding points after the air switch is disconnected every time are recorded, and vehicle load fault results and fault results in the grounding points are counted to obtain a first fault judgment result set and a third fault judgment result set; and sorting the recorded second total current values to obtain a set of second total current values.
Step S60: and judging whether faults exist among all grounding points according to the first total current value and the second total current value set so as to obtain a second fault judgment result set.
It will be appreciated that each of the second set of total current values for any one of the grounding points is equal to the first total current value, irrespective of losses.
Step S70 is step S70': and obtaining a fault detection result of the grounding system according to the first fault judgment result set, the second fault judgment result set and the third fault judgment result set.
It can be understood that the fault detection result of the grounding system includes a vehicle load fault determination result set of all the grounding points, a fault determination set within all the grounding points, and a fault determination set between all the grounding points, and the fault determination result of the grounding system can be obtained by sorting the three fault determination sets.
In this embodiment, a method for detecting a fault of a grounding system is provided, which includes obtaining input current values of all loads in a system to be detected, voltage values at two ends of all loads, and a first total current value of all grounding points, determining that the grounding points include faults of all vehicle loads and grounding point faults according to the input current values, the voltage values, and the first total current values, disconnecting the current grounding point from a vehicle body, obtaining a second total current value set of other grounding points, and determining faults between the grounding points according to the first total current value set and the second total current value set, thereby achieving comprehensive detection of faults of the grounding system. In the prior art, the fault detection of the grounding system cannot be realized comprehensively, but the embodiment detects the vehicle load fault in the grounding point firstly, then continuously detects the fault of the grounding point, and finally detects the fault between the grounding points, thereby realizing the comprehensive detection of the fault of the grounding system.
Referring to fig. 4, fig. 4 is a schematic flow chart of a method for detecting a fault of a grounding system according to a third embodiment of the present invention, and the method for detecting a fault of a grounding system according to the third embodiment of the present invention is proposed based on the first embodiment and the second embodiment.
The step S60 includes:
step S601: and acquiring target first total current values corresponding to the other grounding points according to the first total current values.
The target first total current value is a first total current value corresponding to a grounding point other than the current grounding point.
It is understood that the first total current value corresponding to the other grounding points is extracted from the first total current value according to the other grounding points.
Step S602: and comparing the second total current value set with the target first total current value to obtain a total current value change result.
It should be noted that the total current value change result is a set of total current value change results. In this embodiment, each second total current value is compared with the wood-based change first total current value to obtain each change result, and each change result is sorted to obtain a change result set of the total current value.
Step S603: and judging whether faults exist among all grounding points according to the total current value change result so as to obtain a second fault judgment result set.
It should be noted that the fault determination result between the grounding points can be directly determined according to the change result of the total current value, and the fault result between all the grounding points can be obtained. For example, if the result of change in the total current value is large, the current for disconnecting the grounding point may flow out from the grounding point, and the result of change in the total current value is large, a fault may occur between the grounding point and the grounding point for disconnecting the air switch, and a fault result may be obtained.
In this embodiment, a method for detecting a fault of a grounding system is provided, which includes obtaining an input current value of all loads in a system to be detected and a first total current value of all grounding points, determining a fault in the grounding point according to the input current value of the loads and the first total current value, disconnecting one grounding point from a vehicle body, obtaining a second total current value set of other grounding points, and determining a fault between the grounding points according to the first total current value and the second total current value set, thereby implementing a comprehensive detection of the fault of the grounding system. In the prior art, the fault detection of the grounding system cannot be realized comprehensively, but the embodiment detects the fault in the grounding point firstly and then detects the fault between the grounding points, so that the fault detection of the grounding system is realized comprehensively.
Referring to fig. 5, fig. 5 is a schematic flow chart of a fourth embodiment of the fault detection method of the grounding system of the present invention, and the fourth embodiment of the fault detection method of the grounding system of the present invention is proposed based on the first embodiment, the second embodiment and the third embodiment.
The step S20 includes:
step S201: and traversing all the grounding points to obtain the number of the current grounding points.
It will be appreciated that the number of current ground points is the number of ground points traversed. Traversing all grounding points, each time traversing to a current grounding point, and recording the number of all grounding points traversed for many times.
And S202, comparing the number of the current grounding points with the number of preset grounding points to obtain a comparison result of the number of the grounding points.
It should be noted that the number of the preset ground points is a preset threshold of the number of the ground points, the number of the current ground points is compared with the number of the preset ground points, and the comparison result is recorded.
Step S203: and grouping the current grounding points according to the comparison result, and acquiring a grouping result.
It should be noted that, according to the comparison result, all the grounding points are grouped, for example, the number of the preset grounding points is 16, if the number of the current grounding points traversed exceeds 16, the current grounding points are grouped, the fault judgment of the internal group grounding points and the fault judgment between the sibling points are performed first, and then the fault judgment of the grounding points between the groups is performed, so that the judgment of the grounding point fault can be quickly realized.
Step S204: and acquiring a target input current value of the load contained in the traversed current grounding point from the load input current values according to the grouping result.
It should be noted that, according to the grouping result, the target input current value of the load included in the current grounding point in the group is extracted from the vehicle load input current values of the system to be detected.
In this embodiment, a method for detecting a fault of a grounding system is provided, which includes obtaining an input current value of all loads in a system to be detected and a first total current value of all grounding points, determining a fault in the grounding point according to the input current value of the loads and the first total current value, disconnecting one grounding point from a vehicle body, obtaining a second total current value set of other grounding points, and determining a fault between the grounding points according to the first total current value and the second total current value set, thereby implementing a comprehensive detection of the fault of the grounding system. In the prior art, the fault detection of the grounding system cannot be realized comprehensively, but the embodiment groups the docking points, detects the fault in the docking points by taking the group as a unit, and detects the fault between the docking points afterwards, thereby realizing the rapid and comprehensive detection of the fault of the grounding system.
Furthermore, an embodiment of the present invention further provides a storage medium, where a fault detection program of a grounding system is stored, and the fault detection program of the grounding system, when executed by a processor, implements the steps of the fault detection method of the grounding system as described above.
In addition, referring to fig. 6, an embodiment of the present invention further provides a fault detection apparatus for a grounding system, where the apparatus includes: a current value obtaining module 10, a ground point traversing module 20, a first fault determining module 30, a circuit cutting module 40, a set obtaining module 50, a second fault determining module 60, and a detection result obtaining module 70;
the current value obtaining module 10 is configured to obtain load input current values of vehicle loads included in all grounding points in the grounding system and a first total current value of all the grounding points;
the grounding point traversing module 20 is configured to traverse all the grounding points, and obtain a target input current value of a load included in a traversed current grounding point from the load input current values;
the first fault determining module 30 is configured to determine whether the current ground point has a fault according to the target input current value and the first total current value, so as to obtain a first fault determining result;
the circuit cutting module 40 is configured to maintain a normal working state of a load included in the current grounding point, disconnect the current grounding point from the vehicle body, obtain a second total current value of other grounding points, and return to the step of traversing all the grounding points;
the set obtaining module 50 is configured to obtain a first fault determination result set and a second total current value set when traversal is finished;
the second fault determining module 60 is configured to determine whether faults exist between all the grounding points according to the first total current value and the second total current value set, so as to obtain a second fault determining result set;
the detection result obtaining module 70 is configured to obtain a fault detection result of the ground system according to the first fault determination result set and the second fault determination result set. .
In this embodiment, a fault detection device for a grounding system is provided, in which a current value obtaining module 10 obtains all load input current values and first total current values of all grounding points in a system to be detected, a grounding point traversing module 20 traverses all grounding points of the system to be detected, a first fault determining module 30 determines a fault in a grounding point according to the load input current value and the first total current value, a circuit breaking module 40 disconnects a grounding point from a vehicle body, a set obtaining module 50 obtains second total current value sets of other grounding points, a second fault determining module 60 determines a fault between the grounding points according to the first total current value and the second total current value sets, and a detection result obtaining module 70 integrates all faults to realize comprehensive detection of faults of the grounding system. In the prior art, the fault detection of the grounding system cannot be realized comprehensively, but the embodiment detects the fault in the grounding point firstly and then detects the fault between the grounding points, so that the fault detection of the grounding system is realized comprehensively.
Other embodiments or specific implementation manners of the fault detection apparatus of the grounding system of the present invention may refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order, but rather the words first, second, third, etc. are to be interpreted as names.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a Read Only Memory (ROM)/Random Access Memory (RAM), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method of fault detection of an earthed system, characterized in that it comprises the following steps:
acquiring load input current values of vehicle loads contained in all grounding points in a grounding system and first total current values of all the grounding points;
traversing all grounding points, and acquiring a target input current value of a load contained in the traversed current grounding point from the load input current values;
judging whether the current grounding point has a fault according to the target input current value and the first total current value so as to obtain a first fault judgment result;
keeping the normal working state of the load contained in the current grounding point, disconnecting the current grounding point from the vehicle body to obtain a second total current value of other grounding points and returning to the step of traversing all the grounding points;
when the traversal is finished, acquiring a first fault judgment result set and a second total current value set;
judging whether faults exist among all grounding points according to the first total current value and the second total current value set so as to obtain a second fault judgment result set;
and obtaining a fault detection result of the grounding system according to the first fault judgment result set and the second fault judgment result set.
2. The method of claim 1, wherein the step of determining whether the current grounding point has a fault according to the target input current value and the first total current value to obtain a first fault determination result comprises:
summing the target input current values to obtain target input current sum values;
and judging whether the grounding point has a fault according to the target input current sum value and the first total current value so as to obtain a first fault judgment result.
3. The method according to claim 2, wherein the step of determining whether the grounding point has a fault according to the target input current sum and the first total current value to obtain a first fault determination result comprises:
determining a target total current value of the current grounding point according to the first total current value;
and judging whether the grounding point has a fault according to the target input current sum value and the target total current value, and acquiring a first fault judgment result.
4. The method of claim 3, wherein before the step of determining whether the current grounding point has a fault according to the target input current value and the first total current value to obtain a first fault determination result, the method further comprises:
acquiring voltage values of two ends of a vehicle load contained in a current grounding point;
judging whether a fault vehicle load exists in vehicle loads contained in a current grounding point according to the load input current value and the voltage value so as to obtain a third fault judgment result;
correspondingly, the step of obtaining the first fault determination result set and the second total current value set at the end of traversal includes:
when the traversal is finished, acquiring a first fault judgment result set, a second total current value set and a third fault judgment result set;
correspondingly, the step of obtaining the fault detection result of the grounding system according to the first fault judgment result set and the second fault judgment result set includes:
and obtaining a fault detection result of the grounding system according to the first fault judgment result set, the second fault judgment result set and the third fault judgment result set.
5. The method of claim 1, wherein said step of determining whether a fault exists between all grounding points according to the first total current value and the second total current value set to obtain a second set of fault determination results comprises:
acquiring target first total current values corresponding to the other grounding points according to the first total current values;
and judging whether faults exist among all grounding points according to the target first total current value and the second total current value set, and acquiring a second fault judgment result set.
6. The method of claim 5, wherein the step of determining whether there is a fault between all grounding points according to the target first total current value and the second total current value set, and the step of obtaining a second fault determination result set comprises:
comparing the second total current value set with the target first total current value to obtain a total current value change result;
and judging whether faults exist among all grounding points according to the total current value change result so as to obtain a second fault judgment result set.
7. The method of any one of claims 1-6, wherein the step of traversing all grounding points to obtain a target input current value of the load included in the traversed current grounding point from the load input current values comprises:
traversing all the grounding points to obtain the number of the current grounding points;
comparing the number of the current grounding points with the number of preset grounding points to obtain a comparison result of the number of the grounding points;
grouping the current grounding points according to the comparison result, and acquiring a grouping result;
and acquiring a target input current value of the load contained in the traversed current grounding point from the load input current values according to the grouping result.
8. An apparatus, characterized in that the apparatus comprises: memory, a processor and a fault detection program of a grounding system stored on the memory and executable on the processor, the fault detection program of a grounding system when executed by the processor implementing the steps of the fault detection method of a grounding system as claimed in any one of claims 1 to 7.
9. A storage medium, characterized in that the storage medium has stored thereon a fault detection program of a grounding system, which when executed by a processor implements the steps of the fault detection method of a grounding system according to any one of claims 1 to 7.
10. A fault detection device of an earthing system, characterized in that the device comprises: the device comprises a current value acquisition module, a grounding point traversal module, a first fault judgment module, a circuit cutting module, a set acquisition module, a second fault judgment module and a detection result acquisition module;
the current value acquisition module is used for acquiring load input current values of vehicle loads contained in all grounding points in the grounding system and first total current values of all the grounding points;
the grounding point traversing module is used for traversing all grounding points and acquiring a target input current value of a load contained in the traversed current grounding point from the load input current value;
the first fault judgment module is used for judging whether the current grounding point has a fault according to the target input current value and the first total current value so as to obtain a first fault judgment result;
the circuit cutting-off module is used for keeping the normal working state of a load contained in the current grounding point, disconnecting the current grounding point from the vehicle body, so as to obtain a second total current value of other grounding points and return to the step of traversing all the grounding points;
the set acquisition module is used for acquiring a first fault judgment result set and a second total current value set when traversal is finished;
the second fault judgment module is used for judging whether faults exist among all grounding points according to the first total current value and the second total current value set so as to obtain a second fault judgment result set;
and the detection result acquisition module is used for acquiring the fault detection result of the grounding system according to the first fault judgment result set and the second fault judgment result set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011047381.0A CN112068030B (en) | 2020-09-27 | 2020-09-27 | Fault detection method, equipment, storage medium and device of grounding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011047381.0A CN112068030B (en) | 2020-09-27 | 2020-09-27 | Fault detection method, equipment, storage medium and device of grounding system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112068030A true CN112068030A (en) | 2020-12-11 |
| CN112068030B CN112068030B (en) | 2021-05-28 |
Family
ID=73683921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011047381.0A Active CN112068030B (en) | 2020-09-27 | 2020-09-27 | Fault detection method, equipment, storage medium and device of grounding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112068030B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012215423A (en) * | 2011-03-31 | 2012-11-08 | Patokkusu Japan Kk | Leak current measuring device and leak current measuring method in power supply system |
| CN102806858A (en) * | 2011-05-31 | 2012-12-05 | 瑞萨电子株式会社 | Voltage monitoring system and voltage monitoring module |
| CN106383277A (en) * | 2016-08-26 | 2017-02-08 | 北京长城华冠汽车科技股份有限公司 | Test platform for electric automobile battery management system |
| CN108008210A (en) * | 2017-10-19 | 2018-05-08 | 北京全路通信信号研究设计院集团有限公司 | Broken rail detection method and device |
| CN108196145A (en) * | 2017-12-22 | 2018-06-22 | 台州市路桥豪达汽车电器有限公司 | Automobile electric performance test method and system |
| CN110031715A (en) * | 2018-01-08 | 2019-07-19 | 罗伯特·博世有限公司 | The method of internal short-circuit in first electric flux memory cell for identification |
| CN110058127A (en) * | 2019-05-30 | 2019-07-26 | 四川大学 | Non-effective earthing one-phase earthing failure in electric distribution network point recognition methods |
| CN209182436U (en) * | 2018-11-30 | 2019-07-30 | 上海大郡动力控制技术有限公司 | Motor controller of new energy automobile three phase isolated detection device |
| CN110865279A (en) * | 2019-12-10 | 2020-03-06 | 苏州银蕨电力科技有限公司 | Single-phase earth fault positioning method based on neutral point earth current starting |
| CN110954752A (en) * | 2018-09-27 | 2020-04-03 | 福特全球技术公司 | Vehicle ground path impedance difference detection |
| CN210377162U (en) * | 2019-11-01 | 2020-04-21 | 浙江阿尔郎科技有限公司 | Balance car control system and balance car |
| CN111149291A (en) * | 2017-12-11 | 2020-05-12 | 宝马股份公司 | Method for checking the plausibility in a power supply device of an electric motor |
| CN111273179A (en) * | 2020-02-21 | 2020-06-12 | 深圳普瑞赛思检测技术有限公司 | Electric vehicle detection method and system |
-
2020
- 2020-09-27 CN CN202011047381.0A patent/CN112068030B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012215423A (en) * | 2011-03-31 | 2012-11-08 | Patokkusu Japan Kk | Leak current measuring device and leak current measuring method in power supply system |
| CN102806858A (en) * | 2011-05-31 | 2012-12-05 | 瑞萨电子株式会社 | Voltage monitoring system and voltage monitoring module |
| CN106383277A (en) * | 2016-08-26 | 2017-02-08 | 北京长城华冠汽车科技股份有限公司 | Test platform for electric automobile battery management system |
| CN108008210A (en) * | 2017-10-19 | 2018-05-08 | 北京全路通信信号研究设计院集团有限公司 | Broken rail detection method and device |
| CN111149291A (en) * | 2017-12-11 | 2020-05-12 | 宝马股份公司 | Method for checking the plausibility in a power supply device of an electric motor |
| CN108196145A (en) * | 2017-12-22 | 2018-06-22 | 台州市路桥豪达汽车电器有限公司 | Automobile electric performance test method and system |
| CN110031715A (en) * | 2018-01-08 | 2019-07-19 | 罗伯特·博世有限公司 | The method of internal short-circuit in first electric flux memory cell for identification |
| CN110954752A (en) * | 2018-09-27 | 2020-04-03 | 福特全球技术公司 | Vehicle ground path impedance difference detection |
| CN209182436U (en) * | 2018-11-30 | 2019-07-30 | 上海大郡动力控制技术有限公司 | Motor controller of new energy automobile three phase isolated detection device |
| CN110058127A (en) * | 2019-05-30 | 2019-07-26 | 四川大学 | Non-effective earthing one-phase earthing failure in electric distribution network point recognition methods |
| CN210377162U (en) * | 2019-11-01 | 2020-04-21 | 浙江阿尔郎科技有限公司 | Balance car control system and balance car |
| CN110865279A (en) * | 2019-12-10 | 2020-03-06 | 苏州银蕨电力科技有限公司 | Single-phase earth fault positioning method based on neutral point earth current starting |
| CN111273179A (en) * | 2020-02-21 | 2020-06-12 | 深圳普瑞赛思检测技术有限公司 | Electric vehicle detection method and system |
Non-Patent Citations (3)
| Title |
|---|
| 张青青等: "电动汽车高压产品高低压耦合测试研究", 《电器与能效管理技术》 * |
| 邓学晖等: "高速动车组工作接地电流试验研究", 《中国铁路》 * |
| 陈盼等: "动车组接地回流分配机理试验研究", 《高压电器》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112068030B (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7696760B2 (en) | High voltage harness testing system | |
| CN110542829A (en) | direct-current grounding judgment device and method for power distribution network below 35kV | |
| CN112068030B (en) | Fault detection method, equipment, storage medium and device of grounding system | |
| CN107942183B (en) | Single-phase earth fault positioning detection processing method and system thereof | |
| CN111751661A (en) | Method and system for judging ground fault based on power grid fault recording diagram | |
| CN110596529B (en) | Flexible direct current power grid ground insulation fault detection device and system | |
| CN117007909A (en) | Negative sequence voltage-based broken line and ground fault line selection method and device | |
| Arunachalam et al. | A parametric model approach to arc fault detection for DC and AC power systems | |
| CN109085450A (en) | Low current neutral grounding system fault phase-selecting method and device | |
| CN111751665A (en) | Method and system for judging phase-to-phase fault based on power grid fault recording graph | |
| CN210952934U (en) | Switch cabinet state monitoring and diagnosing system | |
| CN115616364B (en) | Fault arc detection method, device, equipment and storage medium | |
| CN207114674U (en) | Test the out of balance load device of power distribution cabinet | |
| Bayati et al. | A high-impedance fault detection scheme for DC aircrafts based on comb filter and second derivative of voltage | |
| CN112084662A (en) | Method and device for detecting electrical service life of circuit breaker | |
| CN112001588A (en) | Accident event online pre-judging method and device based on N-1 state | |
| CN116626540B (en) | Method, system, terminal and storage medium for judging broken line fault interval | |
| CN214953902U (en) | Safety test equipment | |
| CN113311284B (en) | High-voltage cable sheath circulation fault discrimination method based on fault characteristic curve | |
| CN217766809U (en) | Detection apparatus for arc fault protector | |
| CN112395772B (en) | Evaluation method, terminal and system for residual electric life of circuit breaker | |
| CN221100977U (en) | Generator protection test system with outlet circuit breaker | |
| CN102062847A (en) | Method for detecting semiconductor parameter measurement system | |
| CN118191533A (en) | Arc fault detection method, device, storage medium and equipment | |
| CN115828046A (en) | Accident type determination method and device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |