CN115384531B - Automobile gear identification and diagnosis method and device, electronic equipment and computer readable storage medium - Google Patents
Automobile gear identification and diagnosis method and device, electronic equipment and computer readable storage medium Download PDFInfo
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- CN115384531B CN115384531B CN202211059037.2A CN202211059037A CN115384531B CN 115384531 B CN115384531 B CN 115384531B CN 202211059037 A CN202211059037 A CN 202211059037A CN 115384531 B CN115384531 B CN 115384531B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
- B60W2050/0215—Sensor drifts or sensor failures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
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Abstract
The invention provides an automobile gear identification and diagnosis method and device, electronic equipment and a computer readable storage medium, wherein the method comprises the following steps: acquiring a working state signal of a Hall sensor; grouping the working state signals to obtain at least two paths of signal combinations; judging whether each path of signal combination is correct or not according to an ideal truth table; if the signal combinations are correct, whether the signal combinations correspond to the same gear state is further judged according to an ideal truth table, and if the signal combinations correspond to the same gear state, the gear state is the current gear of the automobile gear. According to the invention, the working state signals of the Hall sensors are collected, grouped, identified and judged, and the wrong signal combination or the wrong working state signal in the wrong signal combination can be quickly and efficiently found, and the working state signals correspond to the Hall sensors one by one, so that the quick diagnosis and positioning of the fault point are realized while the current gear of the automobile is identified.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to an automobile gear identification and diagnosis method and device, electronic equipment and a computer readable storage medium.
Background
With the improvement of the safety performance of new energy automobiles. There is a higher demand for the stability of the operation of the individual functional modules of the motor vehicle, wherein it is increasingly important that the shift signals that are important for the vehicle can be detected in a stable manner and that fault diagnosis messages can be output in the event of failure modes. However, most of the existing gears in the market have one group of gears corresponding to one collected signal, so that the anti-interference capability is poor, and fault diagnosis information cannot be output after faults fail.
Therefore, a simple and efficient technical scheme for identifying and diagnosing the automobile gear is urgently needed at present.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a technical solution for identifying and diagnosing a gear of a vehicle to accurately identify a gear state of a vehicle gear and output fault diagnosis information.
In order to achieve the above object and other related objects, the present invention provides the following technical solutions.
A method for identifying and diagnosing a gear of an automobile, the method comprising:
acquiring working state signals of all Hall sensors in the automobile gear;
Grouping the working state signals of the Hall sensors to obtain at least two paths of signal combinations, wherein each path of signal combination at least comprises the working state signals of two Hall sensors;
Judging whether each signal combination is correct or not according to an ideal truth table of working state signals of each Hall sensor when the automobile is in a different gear state;
If the signal combinations in each path are correct, judging whether the signal combinations in each path correspond to the same gear state according to the ideal truth table, and if the signal combinations in each path correspond to the same gear state, judging that the gear state is the current gear of the automobile gear.
Optionally, the gear state includes an R gear, an N gear upper half stroke, an N gear lower half stroke, and a D gear.
Optionally, if the signal combination has an error, after a preset time period, acquiring working state signals of all hall sensors in the automobile gear again, updating the signal combination according to the working state signals, and judging the updated signal combination again according to the ideal truth table.
Optionally, if the updated signal combination still has an error, further determining whether the working state signal with the error in the signal combination before updating and the working state signal with the error in the signal combination after updating belong to the same hall sensor, if so, indicating that the hall sensor or the corresponding working state signal acquisition module fails.
Optionally, if each signal combination is correct, but each signal combination does not correspond to the same gear state, after the preset time period, acquiring working state signals of each hall sensor in the automobile gear again, updating each signal combination according to the working state signals, and judging each updated signal combination again according to the ideal truth table.
Optionally, if each updated signal combination is correct, but each updated signal combination still does not correspond to the same gear state, further determining whether the signal combination with an abnormality in each signal combination before updating and the signal combination with an abnormality in each signal combination after updating belong to the same signal combination, if so, indicating that the hall sensor corresponding to the signal combination or the corresponding working state signal acquisition module fails.
Optionally, the method further comprises:
acquiring an opening and closing state signal of the automobile gear P key switch;
And judging whether the automobile gear is in the P gear or not according to the opening and closing state signals.
An automobile gear identification and diagnosis device, the device comprising:
The first acquisition module is used for acquiring working state signals of all Hall sensors in the automobile body part;
The processing module is connected with the first acquisition module and is used for carrying out grouping processing on the working state signals of each Hall sensor to obtain at least two paths of signal combinations, and judging whether each path of signal combination is correct according to an ideal truth table of the working state signals of each Hall sensor when the automobile is in different gear states, and if each path of signal combination is correct, judging whether each path of signal combination corresponds to the same gear state according to the ideal truth table;
and the output module is connected with the processing module and used for outputting the identification diagnosis result.
An electronic device, the electronic device comprising:
one or more processors;
And the storage device is used for storing one or more programs, and when the one or more programs are executed by the one or more processors, the electronic equipment realizes the automobile gear identification and diagnosis method.
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to execute the vehicle gear identification diagnosis method according to any one of the above.
The invention has the beneficial effects that: according to the automobile gear identification and diagnosis method, based on the working state signals of all Hall sensors in the automobile gear, grouping processing is carried out to obtain at least two paths of signal combinations, and then the obtained signal combinations are respectively judged, so that the signal combinations with errors or the working state signals with errors in the signal combinations can be quickly and efficiently found out, the working state signals correspond to the Hall sensors one by one, and the error Hall sensors or corresponding signal acquisition modules can be quickly found out when the current gear of the automobile gear is identified, so that the quick diagnosis and positioning of the fault point of the automobile gear are realized; meanwhile, based on the association of the working state signals and the Hall sensors and the division of the signal combinations, the signal combinations or the working state signals with errors can be updated subsequently, whether the signal combinations or the working state signals with errors before and after updating are consistent or not is judged, and then the real errors can be positioned rapidly, misjudgment caused by accidental factors such as interference signals can be prevented, and the anti-interference capability and the fault diagnosis capability of the Hall sensors are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:
FIG. 1 is a schematic view of the internal structure of an automobile body part;
FIG. 2 is a schematic diagram illustrating steps of an identification and diagnosis method for a gear of an automobile according to an exemplary embodiment of the present invention;
fig. 3-4 are circuit diagrams of a hall sensor acquisition module in an automobile gear according to an exemplary embodiment of the present invention;
fig. 5 is a circuit diagram of an open/close state signal acquisition module of a P-gear key switch in an automobile gear according to an exemplary embodiment of the present invention;
fig. 6 is a block diagram of an automobile gear identification and diagnosis device according to an exemplary embodiment of the present invention;
Fig. 7 shows a schematic diagram of a computer system suitable for use in implementing an embodiment of the invention.
Detailed Description
Further advantages and effects of the present invention will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In the following description, numerous details are set forth in order to provide a more thorough explanation of embodiments of the present invention, it will be apparent, however, to one skilled in the art that embodiments of the present invention may be practiced without these specific details, in other embodiments, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the embodiments of the present invention.
As described in the foregoing background, the inventors have studied to find: at present, most automobile body parts in the market are provided with a group of gears corresponding to one path of collected signals, the anti-interference capability is poor, the identification and diagnosis are carried out on gear signals of the automobile body parts, the gear signals and the internal structures of the automobile body parts have no specific mapping relation, and after the automobile body parts are diagnosed that the automobile body parts fail, specific failure points cannot be found further and specific failure diagnosis information is output.
Meanwhile, the internal structure of the automobile body part is shown in fig. 1, the automobile body part mainly comprises a magnet and 6 Hall sensors (black small dots in fig. 1), the relative positions of the internal magnet and the Hall sensors are changed when the body part is shifted, when the Hall sensors are in a middle light-colored area, the Hall sensors do not work, and when the Hall sensors are in an area filled with oblique lines extending to the lower right corner, the Hall sensors work. Meanwhile, aiming at RND gears of automobile gear, the working states of the 6 Hall sensors are different in different gear states. The work state signals of the Hall sensor chip are collected through the resistor voltage division network, and gear identification diagnosis of the automobile gear is carried OUT according to the work state signals of all the Hall sensors in the automobile gear.
Based on the above, the invention provides a technical scheme for identifying and diagnosing the automobile gear: the method comprises the steps of firstly obtaining working state signals of all Hall sensors in an automobile gear, then carrying out identification and judgment based on the working state signals of all Hall sensors in the automobile gear, wherein the working state signals correspond to the Hall sensors one by one, and when the current gear of the automobile gear is identified, the wrong Hall sensor or a corresponding signal acquisition module can be quickly found out, so that the rapid diagnosis and positioning of the automobile gear fault point are realized; meanwhile, the signal combination or the working state signal with errors can be updated subsequently, whether the signal combination or the working state signal with errors before and after updating is consistent or not is judged, the real errors can be positioned rapidly, misjudgment caused by accidental factors such as interference signals and the like is prevented, and the anti-interference capability and the fault diagnosis capability of the system are improved.
Specifically, embodiments of the present invention propose an automobile gear identification and diagnosis method, an automobile gear identification and diagnosis apparatus, an electronic device, a computer-readable storage medium, and a computer program product, respectively, which will be described in detail below.
As shown in fig. 2, in an exemplary embodiment of the present invention, a method for identifying and diagnosing a gear of an automobile is provided, which includes the steps of:
s1, acquiring working state signals of all Hall sensors in an automobile gear;
s2, carrying out grouping processing on the working state signals of each Hall sensor to obtain at least two paths of signal combinations, wherein each path of signal combination at least comprises the working state signals of two Hall sensors;
S3, judging whether the combination of the signals is correct or not according to an ideal truth table of the working state signals of all the Hall sensors when the automobile is in a gear state;
And S4, if all the signal combinations are correct, judging whether all the signal combinations correspond to the same gear state according to an ideal truth table, and if all the signal combinations correspond to the same gear state, judging that the gear state is the current gear of the automobile gear.
In detail, in step S1, an acquisition module based on hall sensors is set up to acquire working state signals of each hall sensor in an automobile gear, the acquisition module is designed based on a resistor voltage division network, and the acquisition module comprises a plurality of acquisition subunits, and one hall sensor corresponds to one acquisition subunit.
In an alternative embodiment of the present invention, as shown in fig. 3, the specific circuit structure of each collecting subunit includes a hall sensor (chip) U, a chip POWER supply circuit and a resistor divider circuit, the chip POWER supply circuit includes a diode D1, a resistor R4 and a capacitor C2, the POWER supply voltage POWER is connected to the anode of the diode D1, the cathode of the diode D1 is connected to the POWER end 1 of the hall sensor U after passing through the serially connected resistor R4, one end of the capacitor C2 is connected to the POWER end 1 of the hall sensor U, the other end of the capacitor C2 is grounded GND, the diode D1 prevents the POWER supply voltage POWER from being reversely connected, the resistor R4 is a limiting resistor, the current is prevented from being too large, the resistor R4 and the diode D1 form a POWER protection circuit, the hall sensor is protected from POWER supply, and the capacitor C2 performs filtering processing on the POWER supply voltage POWER which is connected; the ground end 2 of the Hall sensor U is grounded GND; the resistor voltage dividing circuit comprises a resistor R1, a resistor R2, a resistor R3 and a capacitor C1, wherein the working voltage VCC is grounded GND after passing through the resistor R1, the resistor R2 and the resistor R3 which are sequentially connected in series, the capacitor C1 is connected with the resistor R3 in parallel, the public end of the resistor R2 and the resistor R3 is connected with the output end 3 of the Hall sensor U, the public end of the resistor R2 and the resistor R1 outputs a working state signal V H of the Hall sensor U, the working state signal V H of the Hall sensor U can be acquired by the whole vehicle controller VCU, and the signal acquisition end is a switching signal acquisition end of the whole vehicle controller VCU.
The resistance of the resistor R1 is 2.74 kiloohms, the resistance of the resistor R2 is 470 ohms, the resistance of the resistor 3 is 14.3 kiloohms, the resistance of the resistor 4 is 100 ohms, the capacitance of the capacitor C2 and the capacitance of the capacitor C2 are 10nF, the working voltage VCC is 5V, and the Hall sensor U adopts an MLX92231LSE-AAA-RE Hall sensor chip of a Belgium Michigan core. It should be noted that the model and parameter specifications of each component are not limited, and are only for illustration.
In detail, as shown in fig. 3, the hall sensor U outputs different operating state signals V H through sensing the magnetic field change during gear shifting, and the different voltages of the operating state signals V H show the different operating states of the hall sensor U, namely, the gear change: when the Hall sensor U works, the output end 3 of the Hall sensor U is conducted with the ground end 2, the working voltage VCC sequentially passes through the resistor R1, the resistor R2 and the Hall sensor U and then reaches the ground GND, and at the moment, the voltage corresponding to the working state signal V H is 0.73V (low level); when the hall sensor does not work, the output end 3 of the hall sensor U is disconnected from the ground end 2, and the working voltage VCC goes to the ground GND after passing through the resistor R1, the resistor R2 and the resistor R3 in sequence, and at this time, the voltage corresponding to the working state signal V H is 4.2V (high level).
In more detail, as shown in fig. 3, a description is given for a possible fault situation of the collecting subunit: if the resistor R2 is damaged and broken, the working state signal V H of the Hall sensor U is always 5V; if the resistor R3 is damaged and broken, the working state signal V H of the Hall sensor U can only acquire 0.7V with low level; if the diode D1 is damaged and broken, the Hall sensor U cannot work, and the working state signal V H can only acquire high level 4.2V; if the Hall sensor U is damaged, the voltage of the working state signal V H is abnormal and is not in the range of 4.2+/-0.2V and 0.8+/-0.2V.
It should be noted that, the working principle of collecting the working state signal V H of one hall sensor for one collecting subunit is the same as that of the 5 collecting subunits corresponding to the other 5 hall sensors, and the working principle is the same as that of fig. 4. And 6 acquisition subunits of the acquisition module acquire working state signals of 6 Hall sensors to form a complete RND gear acquisition position identification signal.
In detail, as shown in fig. 4, in an alternative embodiment of the present invention, the collecting module includes 6 collecting sub-units, one hall sensor corresponds to one collecting sub-unit, each collecting sub-unit has the same structure (as shown in fig. 3), the operating state signal corresponding to the collecting of the hall sensor U1 is V H1, the operating state signal corresponding to the collecting of the hall sensor U2 is V H2, the operating state signal corresponding to the collecting of the hall sensor U3 is V H3, the operating state signal corresponding to the collecting of the hall sensor U4 is V H4, the operating state signal corresponding to the collecting of the hall sensor U5 is V H5, and the operating state signal corresponding to the collecting of the hall sensor U6 is V H6.
In detail, in step S2, in a processor (e.g., a vehicle controller VCU), working state signals of each hall sensor are grouped to obtain at least two signal combinations, each signal combination at least includes working state signals of two hall sensors, and each working state signal is divided into a plurality of signal combinations, so that separate comparison and judgment in subsequent analysis and judgment are facilitated, and compared with one-by-one comparison and judgment of each working state signal, the comparison and judgment efficiency can be improved.
In an alternative embodiment of the present invention, as shown in fig. 4, in the processor (e.g., the vehicle controller VCU), the working state signals of the hall sensors U2, U3, U4 may be divided into one signal combination and the working state signals of the hall sensors U1, U5, U6 may be divided into another signal combination in combination with the convenience of design of the hardware circuit structure.
In detail, in step S3, it is determined whether each signal combination is correct according to an ideal truth table of the operating state signals of each hall sensor in different gear states of the automobile. When shifting gears, the Hall sensor outputs different working state signals according to the change of the relative positions of the magnets in the gear, and RND gear information identification is realized according to different combinations of 6 paths of working state signals.
In an alternative embodiment of the present invention, referring to fig. 1, an ideal truth table for obtaining the working state signals of each hall sensor in different gear states of an automobile is shown in the following table, the working state signals of the hall sensors U2, U3, U4 are divided into one signal combination, and the working state signals of the hall sensors U1, U5, U6 are divided into another signal combination.
In the table, 0 represents a low level (0.2±0.2v), and the hall sensor is in a working state; 1 represents a high level (4.2 + -0.2V), and the hall sensor is in an inactive state.
It should be emphasized that, as shown in fig. 1, the gear diagnosis and identification based on the working state signal of the hall sensor is only applicable to RND gears, and the corresponding gear states include R gear, N gear upper half stroke, N gear lower half stroke, and D gear.
In more detail, in step S3, the operation state signals of the hall sensors are subjected to analog-to-digital conversion to obtain corresponding digital signals, and an ideal truth table of the operation state signals of the hall sensors in different gear states of the automobile is compared, if the corresponding digital signals of the operation state signals of the hall sensors in one signal combination can be completely matched with the operation state signal distribution of a certain gear state in the ideal truth table, the signal combination is correct; if the corresponding digital signal of each Hall sensor working state signal in one signal combination cannot be completely matched with the working state signal distribution of a certain gear state in an ideal truth table, the signal combination has errors.
In an alternative embodiment of the present invention, the corresponding digital signal of the working state signal in the signal combination of the hall sensors U2, U3, U4 is 110, which obviously completely matches with the distribution of the working state signal of the lower half-stroke of the N gear in the ideal truth table, so that the signal combination is correct, and the corresponding automobile is very likely to be in the lower half-stroke of the N gear.
In an alternative embodiment of the present invention, the corresponding digital signal of the operating state signal in the signal combination of the hall sensors U2, U3, U4 is 101, which obviously does not completely match the distribution of the operating state signals of the respective gear states in the ideal truth table, and the signal combination has an error, and the two gear states, namely, the 001 gear and the 100 gear of the D gear, are closest to each other.
In more detail, in step S3, if the signal combination is in error, in order to avoid erroneous judgment caused by various accidental factors such as interference signals, the working state signals of the hall sensors in the car gear are acquired again after a preset period of time, the signal combination is updated accordingly, and the updated signal combination is judged again according to an ideal truth table.
If the updated signal combination has no error, the error before updating is not reproducible, the error before updating is acceptable, and the error is accidental abnormality caused by various accidental factors such as interference signals and the like, and is not an absolute fault of a system or a structure; if the updated signal combination still has errors, further judging whether the working state signal with errors in the signal combination before updating and the working state signal with errors in the signal combination after updating belong to the same Hall sensor, if so, indicating that the Hall sensor or the corresponding working state signal acquisition module has faults, further positioning and judging fault points by combining the specific circuit structure of the acquisition module and corresponding digital signals of the front and rear two times, if not, indicating that the fault state is undetermined, and acquiring the working state signal again after the next preset time period and updating each signal combination, repeating the steps again, and judging whether the errors are accidental or not, and not being repeated.
In step S3, it is only determined whether an error occurs in each signal combination, and if the signal combination is in the ideal truth table and the signal combination is correct for a certain time; meanwhile, the premise of comparing and judging based on the corresponding digital signals of the working state signals is that each POWER supply of the acquisition module normally supplies POWER, for example, the POWER supply voltage POWER and the working voltage VCC are in a normal range, for example, the working voltage VCC of 5V can fluctuate within 4.8-5.2V, and no overrun fault occurs.
Therefore, in step S3, it is required to determine that each power supply of the acquisition module is normally powered, there is no power supply voltage overrun fault and the power supply voltage is stable for a certain period of time, the detection of the power supply voltage can be directly acquired by a processor (such as a whole vehicle controller VCU) and obtained through analog-to-digital conversion, and then determine whether each signal combination is correct according to an ideal truth table of working state signals of each hall sensor when the vehicle is in a state of different gears.
In more detail, in step S3, each signal combination is determined, and it is desirable that each signal combination is correct, and if some signal combinations are correct, and in the worst case, each signal combination is incorrect.
In detail, in step S4, if each signal combination is correct, it is further determined whether each signal combination corresponds to the same gear state according to the ideal truth table: if each signal combination corresponds to the same gear state, the gear state is the current gear of the automobile gear; if the signal combinations are correct, but the signal combinations do not correspond to the same gear state, after a preset time period, acquiring working state signals of all Hall sensors in the automobile gear again, updating the signal combinations according to the working state signals, and judging the updated signal combinations again according to an ideal truth table.
In more detail, in step S4, if each updated signal combination is correct, but each updated signal combination still does not correspond to the same gear state, further determining whether the signal combination having an abnormality in each signal combination before updating and the signal combination having an abnormality in each signal combination after updating belong to the same signal combination, if so, indicating that the hall sensor corresponding to the signal combination or the corresponding working state signal acquisition module has a fault; if the error is not the same signal combination, the fault state is to be determined, the working state signal can be obtained again after the next preset time period, each signal combination is updated, the steps are repeated again, and whether the error is accidental or not is judged, and the description is omitted.
The steps S1 to S4 are only identification and diagnosis for the RND gear of the vehicle.
Further, based on the identification and diagnosis of the P gear of the automobile, as shown in fig. 2, the identification and diagnosis method of the P gear of the automobile further comprises the following steps:
S5, acquiring an opening and closing state signal of a gear button switch of the automobile gear P;
S6, judging whether the automobile gear is in the P gear or not according to the opening and closing state signals.
In detail, in step S5, an open/close state signal acquisition module of a P-gear key switch of the automobile is set up based on a resistor voltage division network, and the open/close state signal of the P-gear key switch is related to the open/close state of the P-gear key switch, so as to reflect whether the automobile is in the P-gear or not.
In an alternative embodiment of the present invention, as shown in fig. 5, the open/close state signal acquisition module of the P-gear key switch includes two parallel branches, the first branch includes a resistor R5, a resistor R6, a resistor R7, and a key switch SW1, the working voltage VCC is grounded GND after passing through the resistor R5, the resistor R6, and the resistor R7 which are sequentially connected in series, the key switch SW1 is connected in parallel with the resistor R6, and a common terminal of the resistor R5 and the resistor R6 outputs a first switch state signal V P1; the second branch circuit comprises a resistor R8, a resistor R9, a resistor R10 and a key switch SW2, wherein the working voltage VCC is grounded GND after passing through the resistor R8, the resistor R9 and the resistor R10 which are sequentially connected in series, the key switch SW2 is connected with the resistor R9 in parallel, and a second switch state signal V P2 is output from the common end of the resistor R8 and the resistor R9.
The resistances of the resistor R5, the resistor R6, the resistor R8 and the resistor R9 are all 2 kiloohms, and the resistances of the resistor R7 and the resistor R10 are all 1 kiloohm.
In more detail, as shown in fig. 5, under the normal condition of the power supply of the operating voltage VCC, when the vehicle is in the P range, the key switch SW1 and the key switch SW2 are respectively pressed to be closed, and the output first switch state signal V P1 and the second switch state signal V P2 are both 1.67±0.3V; when the automobile is shifted out of the P range, the key switch SW1 and the key switch SW2 are reset and turned off respectively, and the output first switch state signal V P1 and the second switch state signal V P2 are 3±0.3V.
Therefore, in step S6, under the normal condition of the power supply of the working voltage VCC (the voltage value of the working voltage VCC is within the range of 4.8-5.2V), whether the key switch SW1 and the key switch SW2 are closed is determined according to the voltage values of the first switch state signal V P1 and the second switch state signal V P2, and whether the automobile is in the P gear is further determined.
In more detail, for the open/close state signal acquisition module of the P-range key switch shown in fig. 5, the following situations occur: the key switch SW1 or the key switch SW2 is damaged and cannot be turned on, and the first switch state signal V P1 or the second switch state signal V P2 can only output 3±0.3V; the key switch SW1 or the key switch SW2 is damaged, is always turned on and cannot be turned off, and the first switch state signal V P1 or the second switch state signal V P2 can only output 1.67+/-0.3V; at least one of the resistor R5, the resistor R6 and the resistor R7 in the first branch circuit damages and breaks, the first switch state signal V P1 is suspended, and the output is always 5V; at least one of the resistor R8, the resistor R9 and the resistor R10 in the second branch circuit damages and breaks, the second switch state signal V P2 is suspended, and the output is always 5V; at least one of the resistor R5, the resistor R6 and the resistor R7 in the first branch circuit is damaged but not broken, the corresponding resistance value is erratic, is larger or smaller, and the voltage value of the first switch state signal V P1 is not in a normal range; at least one of the resistor R8, the resistor R9 and the resistor R10 in the second branch circuit is damaged but not broken, the corresponding resistance value is erratic, is larger or smaller, and the voltage value of the second switch state signal V P2 is not in the normal range.
It should be emphasized that, including two parallel branches in fig. 5, namely first branch and second branch, but the shift knob synchronous control button switch SW1 and button switch SW2 of automobile gear P gear, synchronous disconnection or synchronous closure, first branch and second branch parallel arrangement can improve detection efficiency, prevents misjudgement: when the two branches are error-free, the first switch state signal V P1 and the second switch state signal V P2 which are completely synchronous and error-free can be used for effectively judging whether the automobile gear is in the P gear or not; when one of the branches fails and the other branch is error-free, the voltage value of the first switch state signal V P1 and the voltage value of the second switch state signal V P2 can still be used for effectively judging whether the automobile is in the P gear.
Therefore, in the above-mentioned vehicle-side gear identification and diagnosis method, in steps S1 to S4, the RND gear of the vehicle-side gear is quickly and effectively identified and diagnosed based on the acquisition and combination identification of the operating state signals of the hall sensors in the vehicle-side gear, and in steps S5 to S6, the P gear of the vehicle-side gear is quickly and effectively identified and diagnosed based on the acquisition and identification of the open/close state signals of the P gear push-button switch in the vehicle-side gear.
As shown in fig. 6, based on the above-mentioned method for identifying and diagnosing a gear of a vehicle, the present invention further provides a device for identifying and diagnosing a gear of a vehicle, and fig. 6 is a block diagram of a device for identifying and diagnosing a gear of a vehicle according to an exemplary embodiment of the present invention.
In detail, as shown in fig. 6, the exemplary vehicle gear identification and diagnosis device includes:
the first acquisition module 61 is used for acquiring the working state signals of all the Hall sensors in the automobile gear;
The processing module 62 is connected with the first acquisition module 61, and is used for grouping the working state signals of each hall sensor to obtain at least two paths of signal combinations, and is also used for judging whether each path of signal combination is correct according to an ideal truth table of the working state signals of each hall sensor when the automobile is in different gear states, and if each path of signal combination is correct, judging whether each path of signal combination corresponds to the same gear state according to the ideal truth table;
And an output module 63 connected with the processing module 62 for outputting the identification diagnosis result.
The first collecting module 61 corresponds to the collecting module based on the hall sensor in the above embodiment of the vehicle gear identification and diagnosis method, the processing module 62 may be a processor (e.g. a vehicle control unit VCU), and the output module 63 may be a data output port or an output device such as a display screen, a speaker, etc., which is not limited herein.
In more detail, as shown in fig. 6, the exemplary vehicle gear identification and diagnosis device further includes:
the second acquisition module 64 is used for acquiring an opening and closing state signal of a vehicle gear P key switch;
The processing module 62 is further connected to the second collecting module 64, and the processing module 62 is further configured to determine whether the vehicle gear is in the P gear according to the open/close state signal.
The second collecting module 64 corresponds to the open/close state signal collecting module of the automobile gear P-gear key switch in the above embodiment of the automobile gear identification and diagnosis method, and is not described herein.
It should be noted that, the vehicle gear identification and diagnosis device provided in the foregoing embodiment and the vehicle gear identification and diagnosis method provided in the foregoing embodiment belong to the same inventive concept, and specific manners in which each module and unit perform operations have been described in detail in the method embodiment, which is not repeated herein. In practical application, the vehicle gear identification and diagnosis device provided in the above embodiment can distribute the functions to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above, which is not limited herein.
Based on the automobile gear identification and diagnosis method, the invention also provides electronic equipment, which comprises the following steps: one or more processors; and the storage device is used for storing one or more programs, and when the one or more programs are executed by the one or more processors, the electronic equipment realizes the automobile gear identification and diagnosis method provided in each embodiment.
Fig. 7 shows a schematic diagram of a computer system suitable for use in implementing an embodiment of the invention. It should be noted that, the computer system 700 of the electronic device shown in fig. 7 is only an example, and should not impose any limitation on the functions and the application scope of the embodiments of the present invention.
As shown in fig. 7, the computer system 700 includes a central processing unit (Central Processing Unit, CPU) 701 that can perform various appropriate actions and processes, such as performing the methods described in the above embodiments, according to a program stored in a Read-Only Memory (ROM) 702 or a program loaded from a storage portion 708 into a random access Memory (Random Access Memory, RAM) 703. In the RAM 703, various programs and data required for the system operation are also stored. The CPU 701, ROM 702, and RAM 703 are connected to each other through a bus 704. An Input/Output (I/O) interface 705 is also connected to bus 704.
The following components are connected to the I/O interface 705: an input section 706 including a keyboard, a mouse, and the like; an output portion 707 including a Cathode Ray Tube (CRT), a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD), and a speaker, etc.; a storage section 708 including a hard disk or the like; and a communication section 709 including a network interface card such as a LAN (Local Area Network ) card, a modem, or the like. The communication section 709 performs communication processing via a network such as the internet. The drive 710 is also connected to the I/O interface 705 as needed. A removable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed on the drive 710 as needed, so that a computer program read out therefrom is installed into the storage section 708 as needed.
In particular, according to embodiments of the present invention, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising a computer program for performing the method shown in the flowchart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 709, and/or installed from the removable medium 711. When executed by a Central Processing Unit (CPU) 701, performs the various functions defined in the system of the present invention.
It should be noted that, the computer readable medium shown in the embodiments of the present invention may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium may be, for example, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), a flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present invention, a computer-readable signal medium may comprise a data signal propagated in baseband or as part of a carrier wave, with a computer-readable computer program embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. A computer program embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. Where each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units involved in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, and the described units may also be provided in a processor. Wherein the names of the units do not constitute a limitation of the units themselves in some cases.
Based on the above-mentioned vehicle gear identification and diagnosis method, the present invention also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to execute the vehicle gear identification and diagnosis method provided by the above-mentioned embodiment. The computer-readable storage medium may be included in the electronic device described in the above embodiment or may exist alone without being incorporated in the electronic device.
Furthermore, the present invention provides a computer program product or a computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the computer device performs the vehicle gear identification diagnosis method provided in the above-described respective embodiments.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. It is therefore intended that all equivalent modifications and changes made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the appended claims.
Claims (8)
1. An automobile gear identification and diagnosis method is characterized by comprising the following steps:
acquiring working state signals of all Hall sensors in the automobile gear;
Grouping the working state signals of the Hall sensors to obtain at least two paths of signal combinations, wherein each path of signal combination at least comprises the working state signals of two Hall sensors;
Judging whether each signal combination is correct or not according to an ideal truth table of working state signals of each Hall sensor when the automobile is in a different gear state;
If the signal combinations in each path are correct, judging whether the signal combinations in each path correspond to the same gear state according to the ideal truth table, and if the signal combinations in each path correspond to the same gear state, judging that the gear state is the current gear of the automobile gear;
If the signal combination is wrong, after a preset time period, acquiring working state signals of all Hall sensors in the automobile gear again, updating the signal combination according to the working state signals, and judging the updated signal combination again according to the ideal truth table;
If the updated signal combination still has errors, further judging whether the working state signal with errors in the signal combination before updating and the working state signal with errors in the signal combination after updating belong to the same Hall sensor, if so, indicating that the Hall sensor or a corresponding working state signal acquisition module fails.
2. The method for identifying and diagnosing a vehicle's hand gear according to claim 1, wherein the gear state includes an R gear, an N gear upper half stroke, an N gear lower half stroke, and a D gear.
3. The method according to claim 1, wherein if each signal combination is correct but each signal combination does not correspond to the same gear state, after the preset period of time, the operating state signals of each hall sensor in the automobile gear are acquired again, each signal combination is updated accordingly, and the updated signal combinations are judged again according to the ideal truth table.
4. The method according to claim 3, further comprising determining whether the signal combination having an abnormality in each of the signal combinations before updating and the signal combination having an abnormality in each of the signal combinations after updating belong to the same signal combination if the signal combinations after updating are all correct but the signal combinations after updating still do not correspond to the same gear state, and if the signal combinations belong to the same signal combination, indicating that the hall sensor or the corresponding operating state signal acquisition module corresponding to the signal combination has a failure.
5. The vehicle gear identification diagnosis method according to claim 1 or 4, characterized in that the method further comprises:
acquiring an opening and closing state signal of the automobile gear P key switch;
And judging whether the automobile gear is in the P gear or not according to the opening and closing state signals.
6. An automobile gear identification and diagnosis device, characterized in that the device comprises:
The first acquisition module is used for acquiring working state signals of all Hall sensors in the automobile body part;
The processing module is connected with the first acquisition module and is used for carrying out grouping processing on the working state signals of each Hall sensor to obtain at least two paths of signal combinations, and judging whether each path of signal combination is correct according to an ideal truth table of the working state signals of each Hall sensor when the automobile is in different gear states, and if each path of signal combination is correct, judging whether each path of signal combination corresponds to the same gear state according to the ideal truth table; if the signal combination is wrong, after a preset time period, acquiring working state signals of all Hall sensors in the automobile gear again, updating the signal combination according to the working state signals, and judging the updated signal combination again according to the ideal truth table; if the updated signal combination still has errors, further judging whether the working state signal with errors in the signal combination before updating and the working state signal with errors in the signal combination after updating belong to the same Hall sensor, if so, indicating that the Hall sensor or a corresponding working state signal acquisition module fails;
and the output module is connected with the processing module and used for outputting the identification diagnosis result.
7. An electronic device, the electronic device comprising:
one or more processors;
Storage means for storing one or more programs which, when executed by the one or more processors, cause the electronic device to implement the vehicle gear identification diagnostic method as defined in any one of claims 1 to 5.
8. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to perform the vehicle gear identification diagnosis method according to any one of claims 1 to 5.
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