Vehicle door state and door lock state acquisition system and vehicle

Abstract

The application relates to a vehicle door state and door lock state acquisition system and a vehicle, wherein the vehicle door state and door lock state acquisition system comprises a first wire harness, a second wire harness and a third wire harness; the first wire harness is connected with a first micro switch in a door and a corresponding current limiting unit on a target circuit board in the door respectively; the on-off of the first micro switch corresponds to a door state; the second wire harness is connected with a second micro switch in a door lock of the door and a corresponding current limiting unit on the target circuit board respectively; the on-off of the second micro switch corresponds to a door lock state; the resistances of the current limiting units are different; and the third wire harness connects the current limiting units on the target circuit board and a vehicle body controller. The utility model can reduce wire harnesses, improve integration, and solve the problems of high wire harness cost and low integration in related technical schemes.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a vehicle door status and door lock status acquisition system and vehicle. Background Technology

[0002] Currently, the vehicle door and lock status information needs to be sent to the body control system to confirm whether the doors are closed and the locks are engaged, which is then displayed on the dashboard or mobile device for user convenience. The current method for collecting door and lock status information involves connecting the door and lock switches to the body control system via their respective wiring. This allows the body control system to determine the door and lock status by recognizing the switch signals transmitted through the wiring. However, this method has drawbacks: high wiring harness cost and low integration.

[0003] Currently, no effective solution has been proposed to address the issues of high cost and low integration in related technologies. Utility Model Content

[0004] In view of this, it is necessary to provide a vehicle door status and door lock status acquisition system and vehicle to solve the problems of high wiring harness cost and low integration in related technologies.

[0005] In the first aspect, this utility model provides a system for collecting vehicle door status and door lock status, including a first wiring harness, a second wiring harness and a third wiring harness;

[0006] The first wiring harness is connected to a first micro switch in the car door and a corresponding current limiting unit on the target circuit board in the car door; the on / off state of the first micro switch corresponds to the state of the car door.

[0007] The second wiring harness is connected to the second micro switch in the door lock of the vehicle door and the corresponding current limiting unit on the target circuit board, respectively; the on / off state of the second micro switch corresponds to the door lock state; the resistance values ​​of each current limiting unit are different;

[0008] The third wiring harness connects each current limiting unit and the body controller on the target circuit board.

[0009] In some embodiments, the body controller includes a voltage divider unit and a control unit;

[0010] The voltage divider unit is connected to the control unit, the external power supply, and each of the current limiting units, respectively.

[0011] The control unit is used to acquire measurement values ​​under the voltage provided by the external power supply; and to determine the door status and the door lock status based on the comparison result of the measurement values ​​and the preset reference values.

[0012] In some embodiments, the voltage divider unit includes resistors R1, R2, and R3, and diode D1;

[0013] One end of the resistor R1 is connected to an external power source through the diode D1;

[0014] The other end of the resistor R1 is connected to one end of the resistor R2 and each of the current limiting units on the target circuit board.

[0015] The other end of resistor R2 is connected to one end of resistor R3 and the control unit; the other end of resistor R3 is grounded.

[0016] In some embodiments, the body controller further includes a first filtering module and a second filtering module;

[0017] The first filtering module is disposed between the output terminals of the voltage divider unit and each of the current limiting units;

[0018] The second filtering module is disposed between the voltage divider unit and the control unit.

[0019] In some embodiments, the external power supply is a frequency sweep power supply; the frequency sweep power supply raises the voltage for a preset time within one cycle.

[0020] In some embodiments, the first wiring harness and the second wiring harness on each of the vehicle doors are connected to the target circuit board on the vehicle door.

[0021] In some embodiments, the first wiring harness and the second wiring harness on each of the doors share the target circuit board on one of the doors.

[0022] In some embodiments, the acquisition system further includes a normally-continuous current-limiting module with a resistance value different from that of each current-limiting unit;

[0023] The input terminal of the normally open current limiting module is grounded together with the first micro switch and the second micro switch, and the output terminal of the normally open current limiting module is connected to the body controller after being combined with each of the current limiting units.

[0024] In some embodiments, the normally open current limiting module and each current limiting unit are composed of one or more resistors.

[0025] In some embodiments, the normally-through current limiting module is disposed on the target circuit board.

[0026] In some embodiments, the first micro switch is disposed in the door lock.

[0027] In some embodiments, the target circuit board is a window regulator circuit board.

[0028] Secondly, this embodiment provides a vehicle including a vehicle door status and door lock status acquisition system as described in the first aspect above.

[0029] This utility model provides a vehicle door and door lock status acquisition system and a vehicle. The vehicle door and door lock status acquisition system includes a first wiring harness, a second wiring harness, and a third wiring harness. The first wiring harness is connected to a first microswitch in the door and a corresponding current-limiting unit on a target circuit board in the door; the on / off state of the first microswitch corresponds to the door status. The second wiring harness is connected to a second microswitch in the door lock and a corresponding current-limiting unit on the target circuit board; the on / off state of the second microswitch corresponds to the door lock status. The resistance values ​​of the current-limiting units are different. The third wiring harness connects each current-limiting unit on the target circuit board to the body controller. By utilizing the existing door lock and target circuit board structure in the door, the first and second wiring harnesses are integrated and connected to the corresponding current-limiting units integrated on the target circuit board, and then connected together to the body controller via the third wiring harness. This reduces the number of wiring harnesses, increases integration, and solves the problems of high wiring harness cost and low integration in related technical solutions. Attached Figure Description

[0030] Figure 1 A structural block diagram of a vehicle door status and door lock status acquisition system provided in an embodiment of this utility model;

[0031] Figure 2 A structural block diagram of a vehicle body controller provided in an embodiment of this utility model;

[0032] Figure 3 A circuit diagram of a vehicle body controller provided in a preferred embodiment of the present invention;

[0033] Figure 4 A structural block diagram of a vehicle door status and door lock status acquisition system provided in another embodiment of the present utility model;

[0034] Figure 5 This is a structural block diagram of a vehicle door status and door lock status acquisition system provided in a preferred embodiment of the present invention.

[0035] Reference numerals: 10, first wiring harness; 20, second wiring harness; 30, third wiring harness; 41, voltage divider unit; 42, control unit. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application. Furthermore, it is understood that although the efforts made in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, modifications to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0037] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0038] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. When an element is referred to as being "located" on another element, it may be directly disposed on the other element or may have an intervening element. When an element is considered to be "disposed on" another element, it may be directly disposed on the other element or may have an intervening element present. When an element is considered to be "fixed to" another element, it may be directly fixed to the other element or may have an intervening element present. The terms "first," "second," "third," etc., used in this application are merely to distinguish similar objects and do not represent a specific order of objects. The terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Please see Figure 1 This utility model provides a vehicle door status and door lock status acquisition system, including a first wiring harness 10, a second wiring harness 20 and a third wiring harness 30;

[0040] The first wiring harness 10 is connected to the first micro switch in the car door and the corresponding current limiting unit on the target circuit board in the car door, respectively; the on / off state of the first micro switch corresponds to the state of the car door.

[0041] The second wiring harness 20 is connected to the second micro switch in the door lock and the corresponding current limiting unit on the target circuit board, respectively; the on / off state of the second micro switch corresponds to the door lock state; the resistance values ​​of each current limiting unit are different;

[0042] The third wiring harness 30 connects the current limiting units and the body controller on the target circuit board.

[0043] Specifically, the Body Control Module (BCM) is a core component of the automotive electronic system, responsible for managing and controlling numerous electronic functions related to driver and passenger comfort, convenience, and vehicle safety. Door status and door lock status are collected by the BCM for further processing and analysis.

[0044] The vehicle may have multiple doors. Each door has a first wiring harness 10 and a second wiring harness 20, as well as inherent structures on the door (target circuit board, two microswitches, etc.). The target circuit board refers to the circuit board inherent on the door, which is the circuit board object shared by all wiring harnesses in this embodiment. The third wiring harness 30 may be one or more. For example, if the first wiring harness 10 and the second wiring harness 20 on all doors share the target circuit board on one of the doors, then there is only one third wiring harness 30; in this case, all current limiting units are set on the shared target circuit board. If the first wiring harness 10 and the second wiring harness 20 on each door use the target circuit board on their own door, then the number of third wiring harnesses 30 is the same as the number of target circuit boards on the door; in this case, two current limiting units are set on each target circuit board. Of course, it is also possible for several doors to share a single target circuit board, while others use their own target circuit boards; for example, doors on the same side can share a single target circuit board; for instance, the first wiring harness 10 and the second wiring harness 20 in the left rear door, and the first wiring harness 10 and the second wiring harness 20 in the left front door are all connected to the current limiting units on the target circuit board in the left front door, and each current limiting unit is then connected to the body controller through the third wiring harness 30, etc.

[0045] The microswitch functions by changing its on / off state in tandem with the physical position (open / closed) of the door and door lock components, converting this mechanical state into an electrical signal. Specifically, there are two microswitches: a first microswitch and a second microswitch. The first microswitch, located in the door, corresponds to the door's state; for example, when the first microswitch is on, it indicates the door is closed, outputting a high-level electrical signal; when the first microswitch is off, it indicates the door is open, outputting a low-level electrical signal. The second microswitch, located in the door lock, corresponds to the door lock's state; for example, when the second microswitch is on, it indicates the door is closed, outputting a high-level electrical signal; when the second microswitch is off, it indicates the door is open, outputting a low-level electrical signal.

[0046] The target circuit board is equipped with current limiting units. For example, the first wiring harness 10 and the second wiring harness 20 on each door use the target circuit board on their respective doors, resulting in two current limiting units. The first wiring harness 10 and the second wiring harness 20 are respectively connected to their corresponding current limiting units (the input terminals of the two current limiting units are connected to the first wiring harness 10 and the second wiring harness 20, respectively). The output terminals of these two current limiting units are then combined and connected to the body controller via the third wiring harness 30. The third wiring harness 30 can be considered shared, thus eliminating one wiring harness from the target circuit board to the body controller and reducing wiring harness costs. Moreover, since each current limiting unit is integrated into the target circuit board, there is no need to add an additional circuit board in the door. The existing target circuit board is used to optimize the wiring routing and component layout, improving integration. Because the resistance values ​​of the current limiting units are different, the electrical signals of the two microswitches that the body controller can collect will also be different. Therefore, using the comparator circuit built into the body controller or existing comparison programs, the corresponding door status and door lock status can be directly obtained.

[0047] In other embodiments, if there are more wire harnesses, then a corresponding current limiting unit will be added, but the connection method is implemented in a similar way to the above scheme, and will not be described again.

[0048] In related technologies, the switches for doors and locks are connected to the vehicle body controller via their respective circuits. This allows the vehicle body controller to determine the door and lock status by recognizing the switch signals transmitted through the circuits. However, this approach has drawbacks: high wiring harness cost and low integration. The vehicle door and lock status acquisition system provided in this embodiment includes a first wiring harness 10, a second wiring harness 20, and a third wiring harness 30. The first wiring harness 10 is connected to a first microswitch in the door and a corresponding current-limiting unit on the target circuit board, respectively. The on / off state of the first microswitch corresponds to the door status. The second wiring harness 20 is connected to a second microswitch in the door lock and a corresponding current-limiting unit on the target circuit board, respectively. The on / off state of the second microswitch corresponds to the lock status. The resistance values ​​of each current-limiting unit are different. The third wiring harness 30 connects each current-limiting unit on the target circuit board to the vehicle body controller. By utilizing the existing door lock and target circuit board structure in the vehicle door, the first wiring harness 10 and the second wiring harness 20 are integrated and connected to the corresponding current limiting unit integrated in the target circuit board, and then connected to the body controller together through the third wiring harness 30. This reduces the number of wiring harnesses, increases the integration level, and solves the problems of high wiring harness cost and low integration level in related technical solutions.

[0049] The following is a detailed description of each of the above components:

[0050] In some embodiments, reference is made to, for example Figure 2 The body controller includes a voltage divider unit 41 and a control unit 42;

[0051] The voltage divider unit 41 is connected to the control unit 42, the external power supply, and each current limiting unit respectively.

[0052] The control unit 42 is used to acquire measurement values ​​under the voltage provided by an external power supply; and to determine the door status and door lock status based on the comparison result of the measurement values ​​and the preset reference values.

[0053] Specifically, the voltage divider unit 41 is connected to the control unit 42, the external power supply, and each current limiting unit to provide a voltage divider function. The external power supply can be a frequency sweep power supply; the frequency sweep power supply raises the voltage for a preset time within one cycle. That is, the frequency sweep power supply can be considered to intermittently raise the voltage; for example, if one cycle is 10ms and the voltage rise time is 2ms, then the frequency sweep power supply works by raising the voltage by 2ms every 10ms, thereby saving power consumption. The voltage divider unit 41 can be composed of resistors or a chip combined with peripheral circuitry; there are no restrictions on this.

[0054] The control unit 42 may include, but is not limited to, a microprocessor module (MCU) or a programmable logic device (FPGA). The control unit 42 acquires the voltage provided by the external power supply and measures the voltage after it has been divided by the voltage divider unit 41. Since the resistance values ​​of each current limiting unit are different, the change in the measured value caused by the on / off state of the two microswitches is also fixed. Therefore, the measured value can be directly compared with a preset reference value (obtained and set in advance by calculating the change in the on / off state of the microswitches), and the door status and door lock status can be determined by the comparison result.

[0055] This embodiment improves the accuracy of door and lock status detection while saving energy.

[0056] In some embodiments, reference Figure 3 The voltage divider unit 41 includes resistors R1, R2, and R3, as well as diode D1;

[0057] One end of resistor R1 is connected to an external power supply through diode D1;

[0058] The other end of resistor R1 is connected to one end of resistor R2 and each current limiting unit on the target circuit board; the other end of resistor R2 is connected to one end of resistor R3 and control unit 42.

[0059] The other end of resistor R3 is grounded.

[0060] In this embodiment, resistors are used to construct the voltage divider unit 41, thereby reducing hardware costs and improving reliability. The external power supply voltage is Vb; the resistance of resistor R1 is x; the resistance of resistor R2 is y; and the resistance of resistor R3 is z. The resistance of the first current limiting unit is a; and the resistance of the second current limiting unit is b.

[0061] If the first current-limiting unit is on and the second current-limiting unit is off, then the resistance at point N is a×(y+z) / (a+(y+z)). The voltage at point N can then be expressed as Vb×N / (N+x). The voltage at point M is then calculated from point N; the voltage at point M is equal to the voltage at point N × z / (y+z). That is, the voltage at point M (measured value) is expressed as:

[0062] .

[0063] Therefore, if the measured value is equal to the reference value or within the error range of the reference value, the door is considered to be in a closed state, and the door lock is considered to be in an open state. The reference value can also be assumed to be calculated in advance according to the above formula and stored in the control unit.

[0064] If both the first and second current limiting units are open-circuited, the voltage (measured value) at point M will be infinite. Therefore, if the measured value is infinite, the door is considered to be in the open state; the door lock is considered to be in the open state. This situation can be further judged in conjunction with the normally open current limiting module to complete the wiring harness open circuit detection.

[0065] If the second current limiting unit is open-circuited, the first current limiting unit is closed; at this time, the voltage (measured value) at point M is expressed as:

[0066] ;

[0067] Therefore, if the measured value is equal to the reference value or within the error range of the reference value, the door is considered to be in the open state and the door lock is considered to be in the closed state; this situation generally does not occur. The reference value can also be considered to be calculated in advance according to the above formula and stored in the control unit.

[0068] If the second current limiting unit is turned on, the first current limiting unit is also turned on; at this time, the voltage (measured value) at point M is expressed as:

[0069] ;

[0070] Therefore, if the measured value is equal to the reference value or within the error range of the reference value, the door is considered to be in a closed state; the door lock is considered to be in a closed state. The reference value can also be assumed to be calculated in advance according to the above formula and stored in the control unit.

[0071] The above method can quickly and accurately distinguish the status of each door and the door lock status, and the error range can be set to make the judgment robust and reduce the occurrence of misjudgment.

[0072] In some of these embodiments, reference continues. Figure 3 The body controller also includes a first filter module and a second filter module;

[0073] The first filtering module is located between the voltage divider unit 41 and the output terminals of each current limiting unit;

[0074] The second filtering module is located between the voltage divider unit 41 and the control unit 42.

[0075] Specifically, the structures of the first filtering module and the second filtering module can be the same or different.

[0076] For example: the first filtering module is capacitor C1; one end of capacitor C1 is connected to the input terminal of voltage divider unit 41 and the output terminal of each current limiting unit respectively, and the other end of capacitor C1 is grounded to filter the electrical signals output by each current limiting unit; the second filtering module is capacitor C2; one end of capacitor C2 is connected to the output terminal of voltage divider unit 41 and control unit 42 respectively, and the other end of capacitor C2 is grounded to filter the measured values ​​collected by control unit 42.

[0077] This embodiment improves the stability of the data collected by the acquisition system, thereby improving the accuracy of door status and door lock status recognition.

[0078] In some embodiments, the first wiring harness 10 and the second wiring harness 20 on each door are connected to a target circuit board on that door.

[0079] Specifically, each door uses its own target circuit board to connect to the first wiring harness 10 and the second wiring harness 20 in its respective door. For example: see reference... Figure 4 The vehicle has two doors, a left door and a right door. The first wiring harness 10 and the second wiring harness 20 on the left door are connected to a target circuit board on the left door, which in turn is connected to the body controller via a third wiring harness 30. Similarly, the first wiring harness 10 and the second wiring harness 20 on the right door are connected to a target circuit board on the right door, which in turn is connected to the body controller via a third wiring harness 30.

[0080] This embodiment utilizes the target circuit boards on each door to optimize and reduce wiring harness usage to the greatest extent possible.

[0081] In some of these embodiments, a target circuit board is shared on a single car door.

[0082] Specifically, the target circuit board on one car door can be shared by other car doors; that is, the first wiring harness 10 and the second wiring harness 20 of other car doors are connected to the target circuit board, and a corresponding current limiting unit is set on the target circuit board; thereby further reducing hardware costs.

[0083] In other embodiments, the first wiring harness 10 and the second wiring harness 20 in each door are connected to the target circuit board on each door, which will not be described again.

[0084] In some embodiments, reference Figure 5 In such Figure 1 The acquisition system also includes: a normally-continuous current-limiting module with a resistance value different from that of each current-limiting unit;

[0085] The input terminal of the normally connected current limiting module is grounded together with the first micro switch and the second micro switch. The output terminal of the normally connected current limiting module is connected to the body controller after being combined with each current limiting unit.

[0086] Specifically, the normally-continuous current limiting module refers to a current limiting module that is conductive under normal operating conditions; it can be composed of one or more resistors. The input terminal of the normally-continuous current limiting module is grounded together with the first and second microswitches, and the output terminal of the normally-continuous current limiting module is connected to the body controller after being combined with each current limiting unit.

[0087] Since the resistance value of the normally connected current limiting module is different from the resistance value of each current limiting unit, if the circuit resistance value before the body controller is not equal to the resistance value of the normally connected current limiting module and is infinite, it can be assumed that the first wiring harness 10 and the second wiring harness 20 are open circuits, thereby realizing the diagnosis of open circuits in the wiring harnesses and facilitating the maintenance of the wiring harnesses in the door.

[0088] In some embodiments, the normally open current limiting module and each current limiting unit are composed of one or more resistors.

[0089] Specifically, the structures of the normally-current limiting module and the current limiting unit can be the same or different. For example, the normally-current limiting module has the same structure as the current limiting unit, both consisting of a resistor. The first current limiting unit is resistor A with a resistance value of 'a'; the second current limiting unit is resistor B with a resistance value of 'b'; and the normally-current limiting module is resistor C with a resistance value of 'c'. One end of resistor A, one end of resistor B, and one end of resistor C are connected together (e.g., sharing a pin) and then connected to the body controller. The other end of resistor A is grounded through a first microswitch, the other end of resistor B is grounded through a second microswitch, and together with the other end of resistor C, they are grounded.

[0090] This embodiment can reduce hardware costs.

[0091] In other embodiments, the normally open current limiting module and each current limiting unit can be composed of multiple resistors. The principle of this method is similar and will not be discussed again.

[0092] In some embodiments, to further improve integration, the normally-through current limiting module is mounted on the target circuit board.

[0093] In some embodiments, the first microswitch is located in the door lock.

[0094] Specifically, the dual microswitch design achieves decoupling of door status and lock / close status through physically isolated signal acquisition, reducing the occurrence of false alarms. Furthermore, the first and second microswitches are integrated into a single door lock, further improving integration and facilitating maintenance and replacement.

[0095] In some embodiments, the target circuit board is a window regulator circuit board.

[0096] The target circuit board can be any circuit board inherent on the vehicle door, including but not limited to door lock control circuit boards, lighting control circuit boards, and window regulator circuit boards. In this embodiment, considering factors such as wiring and maintenance, the window regulator circuit board is preferentially selected as the target circuit board.

[0097] It should be noted that the above modules can be functional modules or program modules, and can be implemented through software or hardware. For modules implemented through hardware, the above modules can reside in the same processor; or the above modules can be located in different processors in any combination.

[0098] In addition, by combining the vehicle door status and door lock status acquisition system in the above embodiments, this application embodiment can provide a vehicle to implement this.

[0099] The vehicle includes any of the vehicle door status and door lock status acquisition systems described in the above embodiments.

[0100] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A system for collecting vehicle door status and door lock status, characterized in that, Including a first wire harness (10), a second wire harness (20), and a third wire harness (30); The first wiring harness (10) is connected to the first micro switch in the car door and the corresponding current limiting unit on the target circuit board in the car door; the on / off state of the first micro switch corresponds to the state of the car door. The second wiring harness (20) is connected to the second micro switch in the door lock of the vehicle door and the corresponding current limiting unit on the target circuit board, respectively; the on / off state of the second micro switch corresponds to the door lock state; the resistance values ​​of each current limiting unit are different; The third wiring harness (30) connects each current limiting unit and the body controller on the target circuit board.

2. The vehicle door status and door lock status acquisition system according to claim 1, characterized in that, The body controller includes a pressure divider unit (41) and a control unit (42). The voltage divider unit (41) is connected to the control unit (42), the external power supply and each of the current limiting units respectively; The control unit (42) is used to acquire measurement values ​​under the voltage provided by the external power supply; and to determine the door status and the door lock status based on the comparison result of the measurement values ​​and the preset reference values.

3. The vehicle door status and door lock status acquisition system according to claim 2, characterized in that, The voltage divider unit (41) includes resistors R1, R2, and R3, as well as diode D1; One end of the resistor R1 is connected to an external power source through the diode D1; The other end of the resistor R1 is connected to one end of the resistor R2 and each of the current limiting units on the target circuit board. The other end of resistor R2 is connected to one end of resistor R3 and the control unit (42); the other end of resistor R3 is grounded.

4. The vehicle door status and door lock status acquisition system according to claim 2, characterized in that, The vehicle body controller also includes a first filtering module and a second filtering module; The first filtering module is disposed between the output terminals of the voltage divider unit (41) and each of the current limiting units; The second filtering module is disposed between the voltage divider unit (41) and the control unit (42).

5. The vehicle door status and door lock status acquisition system according to claim 2, characterized in that, The external power supply is a frequency sweep power supply; the frequency sweep power supply will raise the voltage for a preset time within one cycle.

6. The vehicle door status and door lock status acquisition system according to claim 1, characterized in that, The first wiring harness (10) and the second wiring harness (20) on each of the vehicle doors are connected to the target circuit board on the vehicle door.

7. The vehicle door status and door lock status acquisition system according to claim 1, characterized in that, The first wiring harness (10) and the second wiring harness (20) on each of the doors share the target circuit board on one of the doors.

8. The vehicle door status and door lock status acquisition system according to claim 1, characterized in that, The acquisition system further includes: a normally-continuous current-limiting module with a resistance value different from that of each current-limiting unit; The input terminal of the normally open current limiting module is grounded together with the first micro switch and the second micro switch, and the output terminal of the normally open current limiting module is connected to the body controller after being combined with each of the current limiting units.

9. The vehicle door status and door lock status acquisition system according to claim 8, characterized in that, The normally connected current limiting module and each current limiting unit are composed of one or more resistors.

10. The vehicle door status and door lock status acquisition system according to claim 1, characterized in that, The first micro switch is located in the door lock.

11. The vehicle door status and door lock status acquisition system according to claim 1, characterized in that, The target circuit board is a window regulator circuit board.

12. A vehicle, characterized in that, The system includes a vehicle door status and door lock status acquisition system as described in any one of claims 1 to 11.

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