Power domain controller, control method and vehicle

Abstract

The invention provides a power domain controller, a control method and a vehicle, and relates to the technical field of vehicles. The power domain controller comprises a control chip and two signal acquisition circuits which are respectively used for acquiring analog signals and PWM (pulse width modulation) signals output by an accelerator pedal, and the control chip is connected with the two signal acquisition circuits and used for acquiring the analog signals and the PWM signals output by the accelerator pedal according to output of the other signal acquisition circuit when detecting that one signal acquisition circuit is abnormal. And an opening signal of the accelerator pedal is obtained, and a power motor of the vehicle is controlled according to the opening signal. According to the power domain controller, the dual-path signal acquisition circuit used for acquiring the analog signal and the PWM signal output by the accelerator pedal is integrated in the power domain controller, so that when one path of signal acquisition circuit is abnormal, the opening signal of the accelerator pedal is obtained according to the output of the other path of signal acquisition circuit; and the reliability of acquiring the opening signal of the accelerator pedal is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a power domain controller, a control method and a vehicle. Background Art

[0002] As cars have more and more functions, the number of electronic control units (ECUs) has increased dramatically. At present, in order to meet the needs of the rapidly increasing number of ECUs, multiple ECUs with similar functions and separation are integrated into a processor hardware platform with stronger performance than ECUs to form domain controllers (Domain Control Unit, DCU for short), such as power domain controllers, body domain controllers, and infotainment domain controllers.

[0003] In the related art, the power domain controller integrates an accelerator pedal analog signal acquisition circuit, through which the power domain controller acquires the accelerator pedal opening signal and controls the vehicle's power motor according to the opening signal. However, obtaining the opening signal in this way has the problem of poor reliability. Summary of the invention

[0004] The present application provides a power domain controller, a control method and a vehicle, which are used to solve the problem of low reliability in the method of obtaining an accelerator pedal opening signal in the related art.

[0005] In the first aspect, the present application provides a power domain controller, comprising: a control chip and a dual-channel signal acquisition circuit, the dual-channel signal acquisition circuit being used to respectively acquire an analog signal and a pulse width modulation (PWM) signal output by an accelerator pedal; a control chip connected to the dual-channel signal acquisition circuit, for obtaining an opening signal of the accelerator pedal according to the output of the other signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, and controlling the vehicle's power motor according to the opening signal.

[0006] In a possible implementation, the signal acquisition circuit includes: a filter component for performing signal filtering, the input end of the filter component is the input end of the signal acquisition circuit, and the output end of the filter component is connected to the control chip.

[0007] In one possible implementation, a filtering component for filtering an analog signal includes: a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor and a third resistor; the first end of the first capacitor is connected to the first end of the first resistor to form an input end of a signal acquisition circuit for acquiring analog signals; the second end of the first resistor, the first end of the second resistor and the second capacitor in parallel, and the first end of the third resistor are connected; the second end of the third resistor is connected to the first end of the third capacitor to form an output end of the signal acquisition circuit for acquiring analog signals; the second end of the first capacitor, the second end of the second resistor and the second capacitor in parallel, and the second end of the third capacitor are all grounded.

[0008] In a possible implementation, a filtering component for filtering a PWM signal includes: a transient suppression diode, a fourth capacitor, a fifth capacitor, a fourth resistor and a fifth resistor; the first end of the transient suppression diode, the first end of the fourth resistor, the first end of the fourth capacitor and the first end of the fifth resistor are connected to form an input end of a signal acquisition circuit for collecting PWM signals; the second end of the fifth resistor is connected to the first end of the fifth capacitor to form an output end of the signal acquisition circuit for collecting PWM signals; the second end of the transient suppression diode, the second end of the fourth capacitor and the second end of the fifth capacitor are all grounded; and the second end of the fourth resistor is connected to a power supply.

[0009] In a possible implementation, when both dual-channel signal acquisition circuits are in normal state, the control chip is also used to: obtain the opening signal of the accelerator pedal according to the output of the dual-channel signal acquisition circuit; and control the power motor of the vehicle according to the opening signal.

[0010] In a possible implementation, the control chip is also used to: determine whether the analog signal and the PWM signal respectively output by the dual-channel signal acquisition circuit meet a preset mapping relationship; if so, determine that the output that meets the accuracy requirement is the accelerator pedal opening signal.

[0011] In a possible implementation, the control chip is further used to: if the conditions are not met, output a prompt message, where the prompt message is used to indicate an accelerator pedal failure and limited vehicle power.

[0012] In a second aspect, the present application provides a control method, which is applied to a control chip in a power domain controller as provided in the first aspect above, and the control method includes: obtaining the output of a dual-channel signal acquisition circuit in the power domain controller; obtaining an opening signal of an accelerator pedal based on the output of the dual-channel signal acquisition circuit; and controlling the power motor of the vehicle based on the opening signal.

[0013] In one possible implementation, an accelerator pedal opening signal is obtained based on the output of a dual-channel signal acquisition circuit, including: determining whether the analog signal and the PWM signal satisfy a preset mapping relationship based on the analog signal and the PWM signal respectively output by the dual-channel signal acquisition circuit; if so, determining that the output that meets the accuracy requirements is the accelerator pedal opening signal.

[0014] In a possible implementation, the control method further includes: if the condition is not satisfied, outputting a prompt message, wherein the prompt message is used to indicate an accelerator pedal failure and limited vehicle power.

[0015] In a possible implementation, the control method further includes: when an abnormality is detected in one of the signal acquisition circuits, obtaining an opening signal of the accelerator pedal according to an output of another signal acquisition circuit, and controlling the power motor of the vehicle according to the opening signal.

[0016] In a third aspect, the present application provides a vehicle, comprising a vehicle body and a power domain controller as provided in the first aspect above.

[0017] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the control method provided in the second aspect.

[0018] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the control method provided in the second aspect.

[0019] The power domain controller, control method and vehicle provided by the present application include a control chip and a dual-channel signal acquisition circuit for respectively acquiring an analog signal and a PWM signal output by an accelerator pedal, wherein the control chip is connected to the dual-channel signal acquisition circuit, and is used to obtain an opening signal of the accelerator pedal according to the output of the other channel signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, and control the power motor of the vehicle according to the opening signal. The present application integrates a dual-channel signal acquisition circuit for acquiring an analog signal and a PWM signal output by an accelerator pedal in a power domain controller, so that when one of the signal acquisition circuits is abnormal, the opening signal of the accelerator pedal is obtained according to the output of the other channel signal acquisition circuit, thereby improving the reliability of obtaining the opening signal of the accelerator pedal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] Figure 1A schematic diagram of the structure of a power domain controller provided in one embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a signal acquisition circuit for acquiring analog signals provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of a signal acquisition circuit for acquiring PWM signals provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the circuit structure of any phase current acquisition circuit in the three-phase current acquisition circuit provided in an embodiment of the present application;

[0025] Figure 5 A flow chart of a control method provided in one embodiment of the present application;

[0026] Figure 6 A schematic diagram of the structure of the accelerator pedal opening signal acquisition strategy provided in an embodiment of the present application.

[0027] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0029] In the related technology, an accelerator pedal analog signal acquisition circuit is integrated in the power domain controller. The power domain controller collects the opening signal of the accelerator pedal through the analog signal acquisition circuit and controls the vehicle's power motor according to the opening signal. However, when the accelerator pedal analog signal acquisition circuit is in an abnormal state, the opening signal cannot be collected, resulting in poor reliability.

[0030] Based on the problems existing in the related technology, the embodiment of the present application integrates a dual-channel signal acquisition circuit for collecting the analog signal and PWM signal output by the accelerator pedal in the power domain controller, so that when one of the signal acquisition circuits is abnormal, the opening signal of the accelerator pedal is obtained according to the output of the other signal acquisition circuit, thereby improving the reliability of obtaining the opening signal of the accelerator pedal.

[0031] In conjunction with specific embodiments, the power domain controller provided in the embodiments of the present application is first described in detail below.

[0032] Figure 1 This is a schematic diagram of the structure of a power domain controller provided in one embodiment of the present application. Figure 1 As shown, the power domain controller includes: a control chip and a dual-channel signal acquisition circuit, the dual-channel signal acquisition circuit is used to respectively acquire the analog signal and the PWM signal output by the accelerator pedal; the control chip is connected to the dual-channel signal acquisition circuit, and is used to obtain the opening signal of the accelerator pedal according to the output of the other signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, and control the vehicle's power motor according to the opening signal.

[0033] Exemplarily, the dual-channel signal acquisition circuit may be an analog signal acquisition circuit and a PWM signal acquisition circuit.

[0034] For example, the accelerator pedal may be a dual-output accelerator pedal, that is, one output is used to output an analog signal, and the other output is used to output a PWM signal.

[0035] In a possible implementation, the analog signal acquisition circuit is used to acquire the analog signal output by the accelerator pedal, and the PWM signal acquisition circuit is used to acquire the PWM signal output by the accelerator pedal.

[0036] Exemplarily, the input end of the analog signal acquisition circuit is used to input the analog signal output by the accelerator pedal, and the output end of the analog signal acquisition circuit is connected to a pin of the control chip; the input end of the PWM signal acquisition circuit is used to input the PWM signal output by the accelerator pedal, and the output end of the PWM signal acquisition circuit is connected to another pin of the control chip.

[0037] It can be understood that the power domain controller provided in the embodiment of the present application is integrated with the whole vehicle controller, that is, after the control chip obtains the opening signal of the accelerator pedal, it can control the power motor of the vehicle according to the opening signal.

[0038] It can be understood that in the power domain controller provided in the embodiment of the present application, by integrating the whole vehicle controller and the dual-channel signal acquisition circuit in the power domain controller, the use of wiring harnesses and metal shells, etc. can be reduced, thereby reducing the cost of the whole vehicle and the complexity of the whole vehicle wiring harness.

[0039] In an embodiment of the present application, the power domain controller includes a control chip and a dual-channel signal acquisition circuit for respectively acquiring an analog signal and a PWM signal output by the accelerator pedal, wherein the control chip is connected to the dual-channel signal acquisition circuit, and is used to obtain an opening signal of the accelerator pedal according to the output of the other channel signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, and control the vehicle's power motor according to the opening signal. In an embodiment of the present application, by integrating a dual-channel signal acquisition circuit for acquiring an analog signal and a PWM signal output by the accelerator pedal in the power domain controller, it is possible to obtain an opening signal of the accelerator pedal according to the output of the other channel signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, thereby improving the reliability of obtaining the opening signal of the accelerator pedal.

[0040] Optionally, the signal acquisition circuit includes a filter component for performing signal filtering, the input end of the filter component is the input end of the signal acquisition circuit, and the output end of the filter component is connected to the control chip.

[0041] Exemplarily, the filter component may include a plurality of capacitors with the same or different capacitance values, a plurality of resistors with the same or different resistance values, and a transient suppression diode, etc.

[0042] It should be noted that in the power domain controller provided in the embodiment of the present application, there is no limitation on the size of the value of the corresponding component in the filtering component used for signal filtering, which can be determined according to the actual application requirements.

[0043] It is understandable that by performing signal filtering on the collected analog signal and PWM signal output by the accelerator pedal, the signal quality of the analog signal and the PWM signal can be improved, thereby improving the sampling accuracy of the accelerator pedal opening signal.

[0044] Optionally, a filtering component for filtering an analog signal includes: a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor and a third resistor; the first end of the first capacitor is connected to the first end of the first resistor to form an input end of a signal acquisition circuit for acquiring analog signals; the second end of the first resistor, the first end of the second resistor and the second capacitor in parallel, and the first end of the third resistor are connected; the second end of the third resistor is connected to the first end of the third capacitor to form an output end of the signal acquisition circuit for acquiring analog signals; the second end of the first capacitor, the second end of the second resistor and the second capacitor in parallel, and the second end of the third capacitor are all grounded.

[0045] Combine the following Figure 2 The signal acquisition circuit for acquiring analog signals provided in the embodiment of the present application is described in detail.

[0046] Figure 2This is a schematic diagram of the structure of a signal acquisition circuit for acquiring analog signals provided in an embodiment of the present application. Figure 2 As shown, the signal acquisition circuit includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2 and a third resistor R3.

[0047] Among them, the first end of the first capacitor C1 is connected to the first end of the first resistor R1 to form the input end 21 of the signal acquisition circuit, and the second end of the first capacitor C1 is grounded (DGND); the second end of the first resistor R1, the first end of the second resistor R2 and the second capacitor C2 in parallel, and the first end of the third resistor R3 are connected; the second end of the third resistor R3 is connected to the first end of the third capacitor C3 to form the output end 22 of the signal acquisition circuit; the second end of the second resistor R2 and the second capacitor C2 in parallel and the second end of the third capacitor C3 are both grounded.

[0048] Exemplarily, the second resistor R2 can be used for voltage division, and the third resistor R3 can be used for filtering and current limiting.

[0049] Optionally, a filtering component for filtering a PWM signal includes: a transient suppression diode, a fourth capacitor, a fifth capacitor, a fourth resistor and a fifth resistor; the first end of the transient suppression diode, the first end of the fourth resistor, the first end of the fourth capacitor and the first end of the fifth resistor are connected to form an input end of a signal acquisition circuit for collecting PWM signals; the second end of the fifth resistor is connected to the first end of the fifth capacitor to form an output end of the signal acquisition circuit for collecting PWM signals; the second end of the transient suppression diode, the second end of the fourth capacitor and the second end of the fifth capacitor are all grounded; and the second end of the fourth resistor is connected to a power supply.

[0050] Combine the following Figure 3 The signal acquisition circuit for acquiring PWM signals provided in the embodiment of the present application is described in detail.

[0051] Figure 3 This is a schematic diagram of the structure of a signal acquisition circuit for acquiring PWM signals provided in an embodiment of the present application. Figure 3 As shown, the signal acquisition circuit includes a transient suppression diode D1, a fourth capacitor C4, a fifth capacitor C5, a fourth resistor R4 and a fifth resistor R5.

[0052] Among them, the first end of the transient suppression diode D1, the first end of the fourth resistor R4, the first end of the fourth capacitor C4 and the first end of the fifth resistor R5 are connected to form an input end 31 of the signal acquisition circuit for collecting PWM signals; the second end of the fifth resistor R5 is connected to the first end of the fifth capacitor C5 to form an output end 32 of the signal acquisition circuit for collecting PWM signals; the second end of the transient suppression diode D1, the second end of the fourth capacitor C4 and the second end of the fifth capacitor C5 are all grounded (DGND); the second end of the fourth resistor R4 is connected to the power supply VCC.

[0053] Exemplarily, the transient suppression diode is used to perform surge protection on the collected PWN signal output by the accelerator pedal, so that the voltage corresponding to the PWN signal is stabilized within a voltage range that meets the requirements. Exemplarily, the voltage that meets the requirements may be 5V.

[0054] Exemplarily, the power source VCC connected to the second end of the fourth resistor R4 may be a pull-up power source for providing a stable voltage for the signal acquisition circuit.

[0055] Exemplarily, the voltage provided by the power supply VCC may be 5V.

[0056] Optionally, when both dual-channel signal acquisition circuits are in a normal state, the control chip in the power domain controller provided in the embodiment of the present application is also used to: obtain an opening signal of the accelerator pedal based on the output of the dual-channel signal acquisition circuit; and control the power motor of the vehicle based on the opening signal.

[0057] It can be understood that in the power domain controller provided in the embodiment of the present application, the dual-channel signal acquisition circuits integrated in the power domain controller can verify each other. When the dual-channel signal acquisition circuits are in a normal state, by comparing the different outputs of the dual-channel signal acquisition circuits, it is possible to quickly detect whether the signal output by the accelerator pedal is abnormal or whether the sensor in the accelerator pedal is faulty, so that the vehicle can enter the safety mode in time, limit the power of the power motor or issue a warning, etc., to improve the safety of the vehicle.

[0058] Optionally, the control chip is also used to: determine whether the analog signal and the PWM signal respectively output by the dual-channel signal acquisition circuit meet a preset mapping relationship; if so, determine that the output that meets the accuracy requirement is the opening signal of the accelerator pedal.

[0059] For example, the preset mapping relationship between the analog signal and the PWM signal may be that one analog signal value corresponds to one PWM signal range. For example, when the analog signal is 2.5V, the corresponding PWM signal range may be 0.4-0.43.

[0060] Exemplarily, when the PWM signal is within the preset PWM signal range corresponding to the analog signal, it means that the analog signal and the PWM signal satisfy the preset mapping relationship; when the PWM signal is not within the preset PWM signal range corresponding to the analog signal, it means that the analog signal and the PWM signal do not satisfy the preset mapping relationship.

[0061] For example, assuming that the preset PWM signal range corresponding to the analog signal is 2.5V is 0.4-0.43, when the analog signal is 2.5V, if the PWM signal is 0.41, it means that the analog signal and the PWM signal satisfy the preset mapping relationship; if the PWM signal is 0.39, it means that the analog signal and the PWM signal do not satisfy the preset mapping relationship.

[0062] Exemplarily, the output that meets the accuracy requirements can be an output with higher accuracy, that is, confirming the sampling accuracy corresponding to the sensors in the accelerator pedal used to sample analog signals and PWM signals respectively, and using the signal collected by the sensor with higher sampling accuracy as the output after passing through the signal acquisition circuit provided in the embodiment of the present application as the opening signal of the accelerator pedal.

[0063] In a possible implementation, when the analog signal and the PWM signal satisfy a preset mapping relationship, it can be determined that the analog signal is an opening signal of the accelerator pedal.

[0064] It can be understood that in the power domain controller provided by the embodiment of the present application, whether the analog signal and the PWM signal respectively output by the dual-channel signal acquisition circuit meet the preset mapping relationship does not conflict with the abnormality of one of the signal acquisition circuits of the dual-channel signal acquisition circuit. In the power domain controller provided by the embodiment of the present application, when one of the signal acquisition circuits of the dual-channel signal acquisition circuit is abnormal, the output of the abnormal signal acquisition circuit cannot be acquired, and the control chip directly obtains the opening signal of the accelerator pedal according to the output of the other signal acquisition circuit, and controls the power motor of the vehicle according to the opening signal; when the dual-channel signal acquisition circuits are in a normal state, the outputs corresponding to the dual-channel signal acquisition circuits can be acquired, and the control chip determines whether the analog signal and the PWM signal respectively output by the dual-channel signal acquisition circuit meet the preset mapping relationship. If so, it determines that the output that meets the accuracy requirement is the opening signal of the accelerator pedal, and controls the power motor of the vehicle according to the opening signal.

[0065] Optionally, if the condition is not satisfied, a prompt message is outputted, where the prompt message is used to indicate that the accelerator pedal is faulty and the power of the entire vehicle is limited.

[0066] Specifically, the unsatisfied situations are similar to the above and will not be described in detail here.

[0067] If the conditions are not met, the vehicle's safety and control accuracy can be improved by outputting prompt information to indicate accelerator pedal failure and vehicle power limitation.

[0068] Optionally, the power domain controller provided in the embodiment of the present application may also include a three-phase current acquisition circuit, the input end of the three-phase current acquisition circuit is used to input the voltage analog signal collected by the Hall sensor, and the output end of the three-phase current acquisition circuit is connected to the control chip.

[0069] Exemplarily, the voltage analog signal may be a voltage signal of 0-5V.

[0070] Figure 4 This is a schematic diagram of the circuit structure of any phase current acquisition circuit in the three-phase current acquisition circuit provided in the embodiment of the present application. Figure 4 As shown, the current acquisition circuit includes a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11 and an operational amplifier U1.

[0071] Among them, the first end of the sixth capacitor C6 is connected to the first end of the sixth resistor R6 to form the input end 41 of the current acquisition circuit, the second end of the sixth capacitor C6 is grounded, the second end of the sixth resistor R6, the first end of the seventh capacitor C7 and the seventh resistor R7 in parallel, and the first input end 42 of the operational amplifier U1 are connected, the second end of the seventh capacitor C7 and the seventh resistor R7 in parallel is grounded, the first end of the eighth resistor R8, the first end of the ninth resistor R9 and the eighth capacitor C8 in parallel, and the second input end 43 of the operational amplifier U1 are connected, the second end of the eighth resistor R8 is grounded, the output end 44 of the operational amplifier U1 is connected to the second end of the ninth resistor R9 and the eighth capacitor C8 in parallel, and then respectively connected to the input end 45 of the hardware overcurrent protection circuit and the first end of the tenth resistor R10, the second end of the tenth resistor R10 is respectively connected to the first end of the ninth capacitor C9 and the first end of the eleventh resistor R11, the second end of the ninth capacitor C9 is grounded, the second end of the eleventh resistor R11 is connected to the control chip (not shown in the figure), and the second end of the tenth resistor R10 is connected to the first end of the ninth capacitor C9 and then connected to the control chip.

[0072] It should be noted that Figure 4 This is only the circuit structure diagram of the current collection of any phase in the three-phase current collection circuit. The circuit structure diagrams of the current collection of the other two phases are the same as Figure 4 The above is similar to what is shown in the figure and will not be repeated here.

[0073] The three-phase current acquisition circuit integrated in the power domain controller provided in the embodiment of the present application can amplify the voltage in a small range by configuring an operational amplifier in the three-phase current acquisition circuit, thereby improving the acquisition accuracy of the three-phase current, thereby improving the vehicle's electric drive torque control accuracy, further improving the drivability of the entire vehicle, improving the efficiency of the controller, and reducing the power consumption of the entire vehicle.

[0074] The control method provided in the embodiment of the present application is described in detail below, taking the control chip in the power domain controller provided in the above embodiment as the execution body.

[0075] Figure 5 This is a flow chart of a control method provided in one embodiment of the present application. Figure 5 As shown, the specific implementation of the control method includes the following steps:

[0076] S501, obtaining the output of the dual-channel signal acquisition circuit in the power domain controller.

[0077] Exemplarily, the dual-channel signal acquisition circuit may be an analog signal acquisition circuit and a PWM signal acquisition circuit.

[0078] Exemplarily, the input end of the analog signal acquisition circuit is used to input the analog signal output by the accelerator pedal, and the output end of the analog signal acquisition circuit is connected to a pin of the control chip; the input end of the PWM signal acquisition circuit is used to input the PWM signal output by the accelerator pedal, and the output end of the PWM signal acquisition circuit is connected to another pin of the control chip.

[0079] It can be understood that the outputs of the two signal acquisition circuits obtained by the control chip can be respectively an analog signal after the analog signal output by the accelerator pedal is filtered by the filtering component in the analog signal acquisition circuit, and a PWM signal after the PWM signal output by the accelerator pedal is filtered by the filtering component in the PWM signal acquisition circuit.

[0080] It can be understood that in the embodiment of the present application, both signal acquisition circuits can output corresponding electrical signals normally, that is, there are no faults in the devices in the accelerator pedal for collecting analog signals and PWM signals.

[0081] S502, obtaining an accelerator pedal opening signal according to the output of the dual-path signal acquisition circuit.

[0082] In one possible implementation, the outputs of the two signal acquisition circuits are compared, and it is determined whether the error between the outputs of the two signal acquisition circuits meets a preset error range, and if so, the output of one of the signal acquisition circuits is determined to be an accelerator pedal opening signal.

[0083] S503, controlling the power motor of the vehicle according to the opening signal.

[0084] Exemplarily, the vehicle may be an electric vehicle.

[0085] In the embodiment of the present application, the control chip in the power domain controller obtains the output of the dual-channel signal acquisition circuit, and obtains the opening signal of the accelerator pedal according to the output of the dual-channel signal acquisition circuit, and further controls the power motor of the vehicle according to the opening signal. In the embodiment of the present application, the dual-channel signal acquisition circuits integrated in the power domain controller can verify each other. When both dual-channel signal acquisition circuits are in a normal state, by comparing the different outputs of the dual-channel signal acquisition circuits, it can quickly detect whether the signal output by the accelerator pedal is abnormal or whether the sensor in the accelerator pedal is faulty, so that the vehicle can enter the safety mode in time, limit the power motor power or issue a warning, etc., to improve the safety of the vehicle.

[0086] Optionally, the specific implementation method of step S502 to obtain the opening signal of the accelerator pedal according to the output of the dual-channel signal acquisition circuit may be: according to the analog signal and the PWM signal respectively output by the dual-channel signal acquisition circuit, determine whether the analog signal and the PWM signal satisfy a preset mapping relationship; if so, determine that the output that meets the accuracy requirement is the opening signal of the accelerator pedal.

[0087] The preset mapping relationship between the analog signal and the PWM signal is similar to the above, which will not be described again.

[0088] The specific implementation of this embodiment is similar to the above and will not be repeated here.

[0089] Optionally, if the conditions are not met, a prompt message is output, which is used to indicate that the accelerator pedal is faulty and the power of the entire vehicle is limited.

[0090] For example, when the accelerator pedal fails, by further outputting a prompt message indicating that the power of the entire vehicle is limited, the power output of the vehicle can be limited, thereby improving the safety of the vehicle.

[0091] It can be understood that the above embodiment is a scenario in which both dual-channel signal acquisition circuits in the power domain controller are in a normal state. The following describes the control method for the scenario in which any one of the dual-channel signal acquisition circuits is in an abnormal state in combination with a specific embodiment.

[0092] First, a method for determining whether the signal acquisition circuit is in an abnormal state is described.

[0093] The output ends of the dual-channel signal acquisition circuit provided in the embodiment of the present application are both connected to the control chip. If the control chip cannot detect the output corresponding to any one of the dual-channel signal acquisition circuits, it means that the signal acquisition circuit is in an abnormal state. If the control chip can detect the output corresponding to any one of the dual-channel signal acquisition circuits, it means that both of the dual-channel signal acquisition circuits are in a normal state.

[0094] Optionally, the control method provided in the embodiment of the present application also includes obtaining an opening signal of the accelerator pedal according to the output of another signal acquisition circuit when an abnormality is detected in one of the signal acquisition circuits, and controlling the power motor of the vehicle according to the opening signal.

[0095] Exemplarily, when the analog signal acquisition circuit is in an abnormal state, the detected PWM signal output by the PWM signal acquisition circuit is used as the opening signal of the accelerator pedal; when the PWM signal acquisition circuit is in an abnormal state, the detected analog signal output by the analog signal acquisition circuit is used as the opening signal of the accelerator pedal.

[0096] Figure 6 This is a schematic diagram of the structure of the accelerator pedal opening signal acquisition strategy provided in the embodiment of the present application. Figure 6 As shown, when the control chip in the power domain controller cannot detect the output of the analog signal acquisition circuit but can detect the output of the PWM signal acquisition circuit, it determines that the analog signal acquisition circuit is in an abnormal state and the PWM signal acquisition circuit is in a normal state, and determines the output of the PWM signal acquisition circuit as the opening signal of the accelerator pedal; when the control chip in the power domain controller cannot detect the output of the PWM signal acquisition circuit but can detect the output of the analog signal acquisition circuit, it determines that the PWM signal acquisition circuit is in an abnormal state and the analog signal acquisition circuit is in a normal state, and determines the output of the analog signal acquisition circuit as the opening signal of the accelerator pedal; when the control chip in the power domain controller can detect the outputs of the analog signal acquisition circuit and the PWM signal acquisition circuit at the same time, it determines that both the analog signal acquisition circuit and the PWM signal acquisition circuit are in a normal state, determines whether the analog signal and the PWM signal meet the preset mapping relationship according to the analog signal and the PWM signal outputted by the analog signal acquisition circuit and the PWM signal acquisition circuit respectively, and if so, determines that the output that meets the accuracy requirement is the opening signal of the accelerator pedal, and if not, outputs prompt information for prompting an accelerator pedal failure and limited vehicle power.

[0097] Optionally, when the control chip in the power domain controller cannot detect the outputs of the analog signal acquisition circuit and the PWM signal acquisition circuit at the same time, it is determined that both the analog signal acquisition circuit and the PWM signal acquisition circuit are in an abnormal state, and a prompt message is output to indicate an accelerator pedal failure and limited vehicle power.

[0098] Optionally, an embodiment of the present application also provides a vehicle, the vehicle and the power domain controller as described in the above embodiment.

[0099] Exemplarily, the vehicle provided in the embodiment of the present application may be an electric vehicle.

[0100] An embodiment of the present application also provides a computer program product, including a computer program, which implements the above-mentioned control method when executed by a processor.

[0101] An embodiment of the present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above-mentioned control method is implemented.

[0102] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0103] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0104] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0105] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0106] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0107] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0108] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0109] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A power domain controller, characterized in that: include: A control chip and a dual-channel signal acquisition circuit, wherein the dual-channel signal acquisition circuit is used to respectively acquire an analog signal and a pulse width modulation (PWM) signal output by an accelerator pedal; The control chip is connected to the dual-channel signal acquisition circuit, and is used to obtain the opening signal of the accelerator pedal according to the output of the other channel signal acquisition circuit when an abnormality is detected in one channel of the signal acquisition circuit, and control the power motor of the vehicle according to the opening signal.

2. The power domain controller according to claim 1, characterized in that: The signal acquisition circuit comprises: a filter component for performing signal filtering, the input end of the filter component is the input end of the signal acquisition circuit, and the output end of the filter component is connected to the control chip.

3. The power domain controller according to claim 2, characterized in that: The filtering component for filtering the analog signal comprises: a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor and a third resistor; The first end of the first capacitor is connected to the first end of the first resistor to form an input end of a signal acquisition circuit for acquiring the analog signal; The second end of the first resistor, the first end of the second resistor and the second capacitor connected in parallel, and the first end of the third resistor are connected; The second end of the third resistor is connected to the first end of the third capacitor to form an output end of a signal acquisition circuit for acquiring the analog signal; The second end of the first capacitor, the second end of the second resistor and the second capacitor connected in parallel, and the second end of the third capacitor are all grounded.

4. The power domain controller according to claim 2, characterized in that: The filter component for filtering the PWM signal includes: a transient suppression diode, a fourth capacitor, a fifth capacitor, a fourth resistor and a fifth resistor; The first end of the transient suppression diode, the first end of the fourth resistor, the first end of the fourth capacitor and the first end of the fifth resistor are connected to form an input end of a signal acquisition circuit for acquiring the PWM signal; The second end of the fifth resistor is connected to the first end of the fifth capacitor to form an output end of a signal acquisition circuit for acquiring the PWM signal; The second end of the transient suppression diode, the second end of the fourth capacitor and the second end of the fifth capacitor are all grounded; The second end of the fourth resistor is connected to a power source.

5. The power domain controller according to any one of claims 1 to 4, characterized in that: When the dual-channel signal acquisition circuits are both in a normal state, the control chip is further used to: obtain an opening signal of the accelerator pedal according to the output of the dual-channel signal acquisition circuit; and control a power motor of the vehicle according to the opening signal.

6. The power domain controller according to claim 5, characterized in that: The control chip is also used to: determine whether the analog signal and the PWM signal respectively output by the dual-channel signal acquisition circuit meet a preset mapping relationship; if so, determine that the output that meets the accuracy requirement is an accelerator pedal opening signal.

7. The power domain controller according to claim 6, characterized in that: The control chip is also used to: if not satisfied, output a prompt message, the prompt message is used to prompt an accelerator pedal failure and limited vehicle power.

8. A control method, characterized in that: A control chip applied to a power domain controller as described in any one of claims 1 to 7, wherein the control method comprises: Obtaining the output of the dual-channel signal acquisition circuit in the power domain controller; Obtaining an accelerator pedal opening signal according to the output of the dual-channel signal acquisition circuit; The power motor of the vehicle is controlled according to the opening signal.

9. The control method according to claim 8, characterized in that: The step of obtaining the accelerator pedal opening signal according to the output of the dual-path signal acquisition circuit comprises: According to the analog signal and the PWM signal respectively output by the dual-channel signal acquisition circuit, determining whether the analog signal and the PWM signal satisfy a preset mapping relationship; If so, it is determined that the output that meets the accuracy requirement is the accelerator pedal opening signal.

10. The control method according to claim 9, characterized in that: Also includes: If not, a prompt message is output, wherein the prompt message is used to prompt that the accelerator pedal is faulty and the power of the entire vehicle is limited.

11. The control method according to any one of claims 8 to 10, characterized in that: Also includes: When an abnormality is detected in one of the signal acquisition circuits, the opening signal of the accelerator pedal is obtained according to the output of the other signal acquisition circuit, and the power motor of the vehicle is controlled according to the opening signal.

12. A vehicle, characterized in that: The vehicle comprises a vehicle body and a power domain controller as claimed in any one of claims 1 to 5.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 8 to 11 when executed by a processor.

14. A computer program product, characterized in that include: A computer program, which, when executed by a processor, implements the method according to any one of claims 8 to 11.

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