Vehicle start control method and device, vehicle and storage medium

Abstract

The application relates to a vehicle starting control method and device, a vehicle and a storage medium, which comprise the following steps: calculating a current pressure value corresponding to a current pressure signal of a driving seat, collecting a current waveform change rate of the current pressure signal, when the current pressure signal is valid and the identity verification of a driver meets a preset verification condition, controlling the vehicle to be powered on at low voltage by using the current piezoelectric electric energy signal, and when the voltage of a low-voltage storage battery is in a power shortage state, the vehicle meets a high-voltage starting condition, and the energy value of the current piezoelectric electric energy signal reaches a preset threshold value, controlling the vehicle to perform a high-voltage starting operation by using the current piezoelectric electric energy signal to charge the low-voltage storage battery. Therefore, the problems that the vehicle cannot be normally started due to the power shortage of the low-voltage storage battery are solved, the pressure signal and energy generated when the driver is seated are used, the energy is used to drive high-voltage power on to wake up the DC / DC to charge the low-voltage storage battery, and thus the vehicle can be started.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a vehicle start-up control method, device, vehicle, and storage medium. Background Technology

[0002] When a car starts, it is mainly powered by a low-voltage battery to complete the initial calibration and starting work. If the battery is depleted due to long-term disuse or improper operation, the car will not be able to start.

[0003] In related technologies, some vehicles use a door-opening start method, which means that after approaching the vehicle with the key and opening the door, the vehicle automatically completes the power-on preparation and can be directly put into gear and driven.

[0004] However, the above-mentioned starting method has the risk of accidental triggering, which may lead to frequent accidental vehicle starts and cause the vehicle to run out of power, posing a safety risk that urgently needs to be addressed. Summary of the Invention

[0005] This application provides a vehicle starting control method, device, vehicle, and storage medium to solve problems such as the inability of a vehicle to start normally due to a low-voltage battery being depleted.

[0006] The first aspect of this application provides a vehicle start-up control method, including the following steps: In response to receiving the current pressure signal and the current piezoelectric energy signal from the driver's seat, the system calculates the current pressure value corresponding to the current pressure signal and collects the current waveform change rate of the current pressure signal. Based on the current pressure value and the current waveform change rate, it is determined whether the current pressure signal is valid. When the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, the current piezoelectric energy signal is used to control the vehicle to power on at low voltage. In response to the vehicle having completed low-voltage power-on, the system detects whether the low-voltage battery voltage of the vehicle is in a depleted state. If the low-voltage battery voltage is in the depleted state, then when the vehicle meets the high-voltage power-on conditions and the energy value of the current piezoelectric energy signal reaches a preset threshold, the system uses the current piezoelectric energy signal to control the vehicle to perform a high-voltage power-on operation to charge the low-voltage battery.

[0007] According to one embodiment of this application, determining whether the current pressure signal is valid based on the current pressure value and the current waveform change rate includes: The current pressure signal is deemed valid when the current pressure value is greater than a first preset threshold, the duration of stability of the current pressure value is greater than a second preset threshold, and the matching degree between the current waveform change rate and the preset waveform template reaches a first preset matching threshold.

[0008] According to one embodiment of this application, the driver's identity verification satisfies preset verification conditions, including: The smart key of the vehicle is located to determine whether the smart key is in the driver's seat area; If the smart key is located in the driver's seat area, the identity verification meets the preset verification conditions.

[0009] According to one embodiment of this application, after determining whether the smart key is in the driver's seat area, the method further includes: If the smart key is not located in the driver's seat area, the vehicle start-up process is terminated.

[0010] According to one embodiment of this application, after the smart key is positioned in the driver's seat area, the method further includes: Obtain the driver's preset weight range and driver's seat waveform characteristics pre-stored in the smart key; When the current weight value corresponding to the current pressure value is within the driver's preset weight range, and the matching degree between the current waveform change rate and the driver's seated waveform characteristics reaches a second preset matching threshold, it is determined that the identity verification meets the preset verification conditions.

[0011] According to one embodiment of this application, after detecting whether the low-voltage battery voltage of the vehicle is in a depleted state, the method further includes: If the low-voltage battery of the vehicle is not in the depleted state, the remaining energy value corresponding to the current piezoelectric energy signal is rectified and regulated and then sent to the low-voltage battery.

[0012] According to the vehicle start control method of this application embodiment, the current pressure value corresponding to the current pressure signal of the driver's seat is calculated, and the current waveform change rate of the current pressure signal is collected. Based on the current pressure value and the current waveform change rate, it is determined that the current pressure signal is valid and the driver's identity verification meets the preset verification conditions. Then, the current piezoelectric energy signal is used to control the vehicle to power on at low voltage. When the low-voltage battery voltage is in a depleted state, the vehicle meets the high-voltage power-on conditions, and the energy value of the current piezoelectric energy signal reaches a preset threshold, the current piezoelectric energy signal is used to control the vehicle to perform a high-voltage power-on operation to charge the low-voltage battery. Thus, the problem of the vehicle failing to start normally due to a depleted low-voltage battery is solved. By using the pressure signal and energy generated when the driver sits down, when the battery is depleted, this energy is used to drive the high-voltage power-on to wake up the DC / DC (Direct Current-Direct Current converter) to charge the low-voltage battery, thereby starting the vehicle.

[0013] A second aspect of this application provides a vehicle start control device, comprising: The acquisition module is used to respond to the received current pressure signal and current piezoelectric energy signal from the driver's seat, calculate the current pressure value corresponding to the current pressure signal, and acquire the current waveform change rate of the current pressure signal; The control module is used to determine whether the current pressure signal is valid based on the current pressure value and the current waveform change rate, and when the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, it uses the current piezoelectric energy signal to control the vehicle to power on at low voltage. The charging module is used to detect whether the low-voltage battery voltage of the vehicle is in a depleted state in response to the vehicle having completed low-voltage power-on. If the low-voltage battery voltage is in the depleted state, when the vehicle meets the high-voltage conditions and the energy value of the current piezoelectric energy signal reaches a preset threshold, the module uses the current piezoelectric energy signal to control the vehicle to perform a high-voltage operation to charge the low-voltage battery.

[0014] According to one embodiment of this application, the control module is specifically used for: The current pressure signal is deemed valid when the current pressure value is greater than a first preset threshold, the duration of stability of the current pressure value is greater than a second preset threshold, and the matching degree between the current waveform change rate and the preset waveform template reaches a first preset matching threshold.

[0015] According to one embodiment of this application, the control module is specifically used for: The smart key of the vehicle is located to determine whether the smart key is in the driver's seat area; If the smart key is located in the driver's seat area, the identity verification meets the preset verification conditions.

[0016] According to one embodiment of this application, after determining whether the smart key is in the driver's seat area, the control module is further configured to: If the smart key is not located in the driver's seat area, the vehicle start-up process is terminated.

[0017] According to one embodiment of this application, after the smart key is positioned in the driver's seat area, the control module is further configured to: Obtain the driver's preset weight range and driver's seat waveform characteristics pre-stored in the smart key; When the current weight value corresponding to the current pressure value is within the driver's preset weight range, and the matching degree between the current waveform change rate and the driver's seated waveform characteristics reaches a second preset matching threshold, it is determined that the identity verification meets the preset verification conditions.

[0018] According to one embodiment of this application, after detecting whether the low-voltage battery voltage of the vehicle is in a depleted state, the charging module is further configured to: If the low-voltage battery of the vehicle is not in the depleted state, the remaining energy value corresponding to the current piezoelectric energy signal is rectified and regulated and then sent to the low-voltage battery.

[0019] According to the vehicle start control device of this application embodiment, the current pressure value corresponding to the current pressure signal of the driver's seat is calculated, and the current waveform change rate of the current pressure signal is collected. Based on the current pressure value and the current waveform change rate, if it is determined that the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, the current piezoelectric energy signal is used to control the vehicle to power on at low voltage. When the low-voltage battery voltage is in a depleted state, the vehicle meets the high-voltage power-on conditions, and the energy value of the current piezoelectric energy signal reaches a preset threshold, the current piezoelectric energy signal is used to control the vehicle to perform a high-voltage power-on operation to charge the low-voltage battery. This solves the problem of the vehicle failing to start normally due to a depleted low-voltage battery. By using the pressure signal and energy generated when the driver sits down, when the battery is depleted, this energy is used to drive high-voltage power-on to wake up the DC / DC converter to charge the low-voltage battery, thereby starting the vehicle.

[0020] A third aspect of this application provides a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle start control method as described in the above embodiments.

[0021] A fourth aspect of this application provides a computer-readable storage medium storing computer instructions for causing the computer to perform the vehicle start control method as described in the above embodiments.

[0022] A fifth aspect of this application provides a computer program product, including a computer program that is executed to implement the vehicle start control method described in the above embodiments.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a flowchart of a vehicle start-up control method provided according to an embodiment of this application; Figure 2 This is a schematic diagram of a piezoelectric effect-based car starting system according to an embodiment of this application; Figure 3 This is a flowchart of a piezoelectric effect-based vehicle starting system control method according to an embodiment of this application; Figure 4 This is an example diagram of a vehicle start control device according to an embodiment of this application; Figure 5 This is a structural schematic diagram of a vehicle according to an embodiment of this application. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0026] The following describes a vehicle starting control method, apparatus, vehicle, and storage medium according to embodiments of this application with reference to the accompanying drawings. Addressing the problem mentioned in the background art where a vehicle cannot start normally due to a low-voltage battery being depleted, this application provides a vehicle starting control method. In this method, the current pressure value corresponding to the current pressure signal of the driver's seat is calculated, and the current waveform change rate of the current pressure signal is collected. Based on the current pressure value and the current waveform change rate, if it is determined that the current pressure signal is valid and the driver's identity verification meets preset verification conditions, the current piezoelectric energy signal is used to control the vehicle to apply low-voltage power. Furthermore, when the low-voltage battery voltage is depleted, the vehicle meets the high-voltage application conditions, and the energy value of the current piezoelectric energy signal reaches a preset threshold, the current piezoelectric energy signal is used to control the vehicle to perform a high-voltage application operation to charge the low-voltage battery. This solves the problem of a vehicle failing to start normally due to a low-voltage battery being depleted. By utilizing the pressure signal and energy generated when the driver sits down, when the battery is depleted, this energy is used to drive high-voltage power-on to wake up the DC / DC converter to charge the low-voltage battery, thereby starting the vehicle.

[0027] Specifically, before introducing this application, let me first introduce the technical solutions and existing technical problems of the relevant technologies.

[0028] Currently, common vehicle starting methods mainly include: directly starting by inserting and turning the key; starting the vehicle with the key inside the car, pressing the brake pedal and pressing the button; and remotely starting the vehicle from a distance using a remote key or mobile app while the vehicle is locked. However, these starting methods are relatively cumbersome. Furthermore, the vehicle is primarily powered by the battery during startup to complete the initial calibration and starting process. When the battery is depleted due to prolonged disuse or improper operation, the vehicle will be unable to start. Therefore, solving the battery depletion problem and ensuring the reliability of vehicle starting is a pressing need.

[0029] To address the aforementioned issues, some vehicles now employ a door-opening start system. By approaching the vehicle with the key and opening the door, the vehicle automatically prepares for power-on and can be driven directly into gear.

[0030] However, the above solutions still have the possibility of false triggering, which may lead to frequent false starts of the vehicle, easily causing battery depletion and posing certain safety risks. At the same time, one direction to solve the problem of battery depletion is to monitor the power of the low-voltage battery, and give a reminder when the power is low or automatically charge the low-voltage battery through a designed control circuit. However, this method can only prevent the problem and cannot fundamentally solve it.

[0031] Therefore, based on the aforementioned technical problems, this application collects the signal of the driver getting into the vehicle and sitting down as the vehicle start signal, and at the same time collects the energy generated when sitting down, converts the energy into electrical energy, and supplies power to the vehicle's low voltage to start the vehicle, thereby saving energy and enabling the vehicle to start even when the low-voltage battery is depleted.

[0032] Specifically, Figure 1 This is a flowchart illustrating a vehicle start-up control method provided in an embodiment of this application.

[0033] like Figure 1 As shown, the vehicle start-up control method includes the following steps: In step S101, in response to receiving the current pressure signal and the current piezoelectric energy signal from the driver's seat, the current pressure value corresponding to the current pressure signal is calculated, and the current waveform change rate of the current pressure signal is collected.

[0034] Specifically, let me first introduce the system modules involved in this application, such as... Figure 2 As shown, it mainly includes a piezoelectric module 1, a rectifier and voltage regulator circuit 2, a rectifier circuit 3, a voltage regulator circuit 4, a low-voltage battery 5, a detection circuit 6, a microprocessor 7, a body controller 8, and a vehicle controller 9.

[0035] The piezoelectric module 1 is arranged under the driver's seat and above the floor, preferably under the seat cushion and between the seat spring. When the driver sits down, it maximizes the acquisition of the current pressure signal and the current piezoelectric energy signal generated when the driver sits down as the vehicle start trigger source, thus realizing the "one thing for two purposes" design. In order to generate as much output power as possible and a suitable output voltage, the piezoelectric materials are appropriately connected in parallel and series to form a hybrid array. At the same time, in order to improve structural stability, the hybrid array is reasonably arranged and press-fitted into an integrated piezoelectric module 1.

[0036] The formula for the voltage generated by a piezoelectric material is: ; Where Voc is the open-circuit voltage (volts, V); C is the piezoelectric capacitance (farads, F); g is the piezoelectric voltage constant (Vm / N); t is the material thickness (meters, m); and σ is the stress (Pascals, Pa).

[0037] Furthermore, after confirming the material thickness, piezoelectric voltage constant, and force-bearing area, the magnitude of the force on the piezoelectric material can be calculated by detecting the open-circuit voltage, thereby determining whether someone has sat in the driver's seat.

[0038] The rectifier and voltage regulator circuit 2 converts the AC power generated by the piezoelectric module 1 into stable DC power. The detection circuit 6 collects the voltage and current signals of each node and feeds them back to the microprocessor 7. The microprocessor 7, as the control core, coordinates the work of the entire system through signal processing and control command issuance. It also communicates with the body controller 8 and the vehicle controller 9 through the CAN (Controller Area Network) bus to realize the power-on and power-off control of the vehicle and the monitoring of the battery status.

[0039] The following section will explain the connection relationships, energy transmission paths, and rectification and voltage regulation processes for each system module.

[0040] Specifically, the piezoelectric module 1 is connected to the rectifier and voltage regulator circuit 2 via wires. When an action causes the piezoelectric module 1 to generate electricity, the generated AC power is transmitted to the rectifier and voltage regulator circuit 2 via wires. The rectifier and voltage regulator circuit 2 includes a rectifier circuit 3 and a voltage regulator circuit 4. The rectifier circuit 3 is used to convert the AC power generated by the piezoelectric module 1 into DC power, using a single-phase bridge uncontrolled rectifier. The voltage regulator circuit 4 is used to filter out harmonics and convert the DC power into usable and stable DC power. The voltage regulator circuit 4 uses a general-purpose DC / DC converter.

[0041] The rectifier and voltage regulator circuit 2 is connected to the low-voltage battery 5 via wires. The electricity generated by the piezoelectric module 1 is converted into a stable DC power usable by the low-voltage electrical appliances of the vehicle after being converted by the rectifier and voltage regulator circuit 2. This power supplies the low-voltage electrical appliances of the vehicle and charges the low-voltage battery 5. In the emergency scenario of power loss, the output terminal of the rectifier and voltage regulator circuit 2 is also connected to an energy storage unit (supercapacitor module) to temporarily store the electrical energy generated by the piezoelectric module 1. When the supercapacitor voltage reaches a preset threshold (such as 36V), the stored energy discharges to the high-voltage relay, driving the high voltage to power on and wake up the DC / DC converter.

[0042] The detection circuit 6 collects the input and output voltage and current of the piezoelectric module 1 and the rectifier and voltage regulator circuit 2. The detection circuit 6 is connected to the I / O (Input / Output) interface of the microprocessor 7 through wires, and transmits the collected data to the microprocessor 7 through the I / O interface.

[0043] The microprocessor 7 is connected to the detection circuit 6 and the rectifier and voltage regulator circuit 2 via wires. After receiving the data collected by the detection circuit 6, it performs the following processing: (1) Signal processing: obtains the detection circuit information (including open circuit voltage, waveform change rate, etc.) through the I / O interface, calculates the pressure value and judges the validity of the seat; (2) Rectifier and voltage regulator control: after internal logic judgment, sends an electrical signal to the rectifier and voltage regulator circuit 2 through the I / O interface to control the internal switching devices to turn on and off, so that the rectifier and voltage regulator circuit 2 outputs a suitable and stable DC power; (3) CAN (Controller Area Network) communication: connects to the body controller 8 and the vehicle controller 9 through the CAN bus, thereby sending the start signal of the piezoelectric module 1 triggered by entering the driver's seat to the body controller 8 and the vehicle controller 9, and performs battery power detection.

[0044] The body controller 8 and the vehicle controller 9 are responsible for detecting whether the key is inside the vehicle, completing key authentication, detecting the battery power and sending it to the microprocessor 7, receiving signal requests from the microprocessor 7 and implementing the relevant low-voltage and high-voltage functions of the vehicle.

[0045] Specifically, such as Figure 3As shown, when the driver sits in the driver's seat, the piezoelectric module 1 deforms due to the stress generated by the weight of the human body, generating a pressure signal and a piezoelectric energy signal. The piezoelectric energy signal output by the piezoelectric module 1 is transmitted to the rectifier and voltage regulator circuit 2 via a wire, where it is converted into pulsating DC by the rectifier circuit 3. After the voltage regulator circuit 4 filters out harmonics, it outputs stable DC. This DC is stored in the energy storage unit (supercapacitor module) as a backup energy source for subsequent high-voltage power-on operations. The detection circuit 6 collects the current pressure signal output by the piezoelectric module 1 and transmits it to the microprocessor 7 via the I / O interface. The microprocessor 7 calculates the corresponding current pressure value based on the collected current pressure signal and simultaneously samples the waveform of the current pressure signal to calculate its rate of change, thus obtaining the current waveform rate of change of the current pressure signal.

[0046] In step S102, the validity of the current pressure signal is determined based on the current pressure value and the current waveform change rate. When the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, the vehicle is powered on at low voltage using the current piezoelectric energy signal.

[0047] According to one embodiment of this application, determining whether a current pressure signal is valid based on the current pressure value and the current waveform change rate includes: determining that the current pressure signal is valid when the current pressure value is greater than a first preset threshold, the duration of the current pressure value being stable is greater than a second preset threshold, and the matching degree between the current waveform change rate and the preset waveform template reaches a first preset matching threshold.

[0048] The first preset threshold, the second preset threshold, and the first preset matching threshold can all be obtained by those skilled in the art based on human body weight distribution statistics, the time characteristics of human sitting actions, and general experimental tests. The preset waveform template can be obtained based on ergonomics and actual measurement statistics, and no specific limitations are made here.

[0049] Specifically, the microprocessor 7 further judges the current pressure value and the current waveform change rate to confirm whether the current pressure signal comes from the driver's normal sitting action, thereby avoiding unauthorized actions such as placing heavy objects, children climbing, or vehicle vibration that could cause the system to be falsely triggered.

[0050] Specifically, the detection circuit 6 collects the current pressure signal of the piezoelectric module 1, and the microprocessor 7 converts the current pressure signal into the corresponding pressure value F. When the current pressure value is greater than the first preset threshold (e.g., 30kg), that is, F>30kg, it indicates that the weight of the object being sat on has exceeded the preset minimum threshold. This can eliminate interference from light objects such as children, pets, and small luggage, but it cannot eliminate interference from heavy objects such as large luggage. Therefore, it is necessary to further determine whether an adult is sitting in the driver's seat.

[0051] When the current pressure value first exceeds the first preset threshold, the timer inside the microprocessor 7 starts immediately. Only when the current pressure value remains above the first preset threshold and reaches the second preset threshold (preferably 300ms) can interference from heavy objects such as large luggage be eliminated. It should be noted that the time for a normal human sitting down is usually 200ms to 400ms, while the duration of non-human interference sources is significantly different. For example, the impact of a car door closing is about 20 to 50ms, the transmission of road bumps to the seat is about 30 to 80ms, and the light touch of a passerby to the seat is about 50 to 100ms. Therefore, when the continuous stable time of the current pressure value is greater than the second preset threshold, it means that the normal sitting down action of an adult is completely covered, eliminating the possibility of placing large luggage and effectively avoiding false triggering caused by instantaneous pulse signals such as the impact of a car door closing or the light touch of a passerby to the seat.

[0052] Furthermore, the microprocessor 7 compares the current waveform change rate with a preset waveform template (i.e., a general human sitting waveform template). The characteristic waveform of a normal human sitting is: a steep rise followed by a slight fall, fluctuation adjustment, and then stabilization. The waveform matching uses a similarity algorithm. When the matching degree between the current waveform change rate and the preset waveform template reaches the first preset matching threshold (preferably 80%), the current pressure signal is determined to be valid. This indicates that the current waveform change rate is highly consistent with the normal sitting action of an adult in terms of shape, rather than the monotonous, slow, and stable waveform presented by the placement of heavy objects.

[0053] According to one embodiment of this application, the driver's identity verification meets preset verification conditions, including: locating the vehicle's smart key and determining whether the smart key is in the driver's seat area; if the smart key is in the driver's seat area, the identity verification meets the preset verification conditions.

[0054] According to one embodiment of this application, after the smart key is in the driver's seat area, the method further includes: acquiring the driver's preset weight range and driver's seat waveform features pre-stored in the smart key; when the current weight value corresponding to the current pressure value is within the driver's preset weight range, and the matching degree between the current waveform change rate and the driver's seat waveform features reaches a second preset matching threshold, it is determined that the identity verification meets the preset verification conditions.

[0055] Among them, the preset verification conditions can be set based on vehicle safety and anti-accidental touch requirements, the preset weight range can be set based on the individual physiological characteristics of the driver, and the second preset matching threshold can be obtained based on general experimental tests, without specific limitations here.

[0056] Specifically, the identity verification process of this application adopts a three-layer progressive verification architecture, with each layer following a serial logic. That is, the next layer can only be entered after the previous layer is passed, and the process will be terminated if any layer fails.

[0057] Specifically, firstly, the vehicle's smart key location is verified to confirm that the legitimate key is in the driver's seat area, preventing triggering by people outside the vehicle or in the front passenger / rear seats. This smart key location verification can be achieved using UWB (Ultra-Wideband) technology, which boasts centimeter-level positioning accuracy and strong resistance to multipath interference. It can reliably determine the key's precise location in the complex electromagnetic environment inside the vehicle. The body controller uses UWB anchor points located in multiple fixed positions within the vehicle (such as the center of the dashboard, between the front seats, the left B-pillar, and the right B-pillar). The system receives the UWB signal emitted by the smart key. Based on the signal strength attenuation model and the signal arrival time difference, it calculates the distance between the smart key and each anchor antenna, thereby determining the three-dimensional spatial coordinates of the key inside the vehicle. When the three-dimensional spatial coordinates of the key fall within the pre-defined three-dimensional spatial range of the "driver's seat area", the key position verification is deemed successful. The "driver's seat area" can be an ellipsoidal space with a radius of 30cm centered on the center of the seat cushion. This range covers all possible locations where the key may be when the driver is normally seated (including trouser pockets, coat pockets, handbags, etc.).

[0058] Secondly, when the smart key is paired with the vehicle for the first time, the system guides the driver to enter personal information, including weight, height, age, etc. The system automatically generates a preset weight range for the driver based on the entered weight value. The upper and lower limits of the range are ±5kg of the entered weight value (for example, if the entered weight is 70kg, the range is 65-75kg). This range data is encrypted and stored in the secure storage area of ​​the smart key. At the same time, the system guides the driver to complete 1-3 standard sitting actions. The piezoelectric module 1 collects the pressure signal of each sitting action, and the microprocessor 7 extracts the key waveform features in the pressure signal, including the peak slope of the impact, the fall amplitude, the fluctuation frequency, the stabilization time, etc., and comprehensively forms the driver's unique sitting waveform features, which are encrypted and stored in the smart key.

[0059] Once the smart key location verification is successful, the microprocessor 7 converts the current pressure value collected by the detection circuit 6 into the current weight value and compares it with the driver's preset weight range stored in the smart key. If the current weight value is within the driver's preset weight range, the weight matching is successful.

[0060] Finally, after the weight matching is successful, the microprocessor 7 compares the waveform of the current waveform change rate with the driver's seated waveform features stored in the smart key. This application uses a dynamic time warping algorithm to calculate the similarity between the two waveforms. The dynamic time warping algorithm allows the waveform to have a certain degree of stretching and offset on the time axis. Therefore, it has good tolerance for waveform time differences caused by slight changes in clothing thickness, sitting habits, etc. when the same driver sits down on different dates. When the similarity reaches the second preset matching threshold (preferably 70%), the waveform matching is successful. At this time, it is determined that the identity verification meets the preset verification conditions, and then the current piezoelectric energy signal is used to control the vehicle to power on at low voltage.

[0061] It should be noted that the second preset matching threshold (preferably 70%) compares the current waveform with the stored "personalized seating template" of the driver. Since the driver's seating waveform at different times will naturally fluctuate due to changes in individual physiological state (fatigue level, clothing thickness, etc.), a lower threshold (70%) needs to be set to maintain the acceptance rate for the same driver and avoid mistakenly rejecting legitimate drivers. The first preset matching threshold (preferably 80%) mentioned above is waveform matching in the judgment of the validity of pressure signals. It compares the current waveform with the "general human seating template". Its purpose is to distinguish between "human seating" and "non-human physical actions". It belongs to broad pattern recognition and can be set with a higher threshold to improve specificity.

[0062] Therefore, once the three layers of verification—smart key location verification, weight matching, and waveform matching—are all passed, the microprocessor 7 determines that the driver's identity verification meets the preset verification conditions and sends a low-voltage request to the body controller via the CAN bus. The vehicle then enters the low-voltage power-on stage. This multi-verification mechanism effectively prevents unauthorized personnel (including children and unauthorized adults) from accidentally starting the vehicle, significantly improving the vehicle's safety and anti-theft performance.

[0063] According to one embodiment of this application, after determining whether the smart key is in the driver's seat area, the method further includes: if the smart key is not in the driver's seat area, then terminating the vehicle start-up process.

[0064] Specifically, if the smart key is located in the passenger seat area, the rear seat area, or outside the vehicle, the key location verification fails, the system immediately terminates the start-up process, and the vehicle does not respond.

[0065] In step S103, in response to the vehicle having completed low-voltage power-on, it is detected whether the low-voltage battery voltage of the vehicle is in a depleted state. If the low-voltage battery voltage is in a depleted state, when the vehicle meets the high-voltage conditions and the energy value of the current piezoelectric energy signal reaches a preset threshold, the current piezoelectric energy signal is used to control the vehicle to perform the high-voltage operation to charge the low-voltage battery.

[0066] Specifically, when the microprocessor 7 determines that the current pressure signal is valid and the driver's identity is verified, it sends a low-voltage request to the body controller 8 via the CAN bus. After the body controller 8 confirms that the key verification has been passed and there are no other safety prohibitions, it allows the low-voltage power-on. At this time, low-voltage devices such as the instrument cluster, in-vehicle entertainment system, and air conditioning controller start to work. The microprocessor 7 continuously monitors the output voltage of the low-voltage battery 5 through the detection circuit 6. During this process, the electrical energy generated by the piezoelectric module 1 is continuously stored in the energy storage unit after being processed by the rectifier and voltage regulator circuit 2. Regardless of whether the low-voltage battery is depleted, this energy storage process continues in the background.

[0067] Furthermore, after the low-voltage power-on is completed, the microprocessor 7 reads the output voltage of the low-voltage battery 5 through the detection circuit 6 and compares it with the preset low-voltage threshold (preferably 12V). If the output voltage of the low-voltage battery 5 is <12V, it is determined that the low-voltage battery 5 is in a low-voltage state, the vehicle cannot be started by conventional means, and the system enters the low-voltage emergency start process.

[0068] Specifically, after determining that the low-voltage battery 5 is depleted, the microprocessor 7 first performs a high-voltage power-on condition pre-check to confirm whether the vehicle meets the conditions for safe high-voltage power-on. The pre-check may include checking whether the interlock signal circuit of the high-voltage connector is conductive, reading the collision status signal of the airbag controller, and checking the insulation resistance of the high-voltage circuit to the vehicle body. If the circuit is conductive without open circuit, there is no collision signal, and the insulation resistance is ≥ 500Ω / V (national standard requirement), the high-voltage power-on condition is determined to be met, and the system enters the energy storage judgment stage.

[0069] Furthermore, after the high-voltage power-on conditions are met, the microprocessor 7 reads the terminal voltage of the energy storage unit and compares it with the preset high-voltage start-up threshold (preferably 36V). If the terminal voltage is ≥36V, it indicates that the energy storage unit has sufficient power. The microprocessor 7 sends a control signal to the high-voltage relay drive circuit through the I / O interface, causing the energy storage unit to discharge to the high-voltage relay coil. After the high-voltage relay coil is energized, it generates electromagnetic force, drives the contacts to close, and connects the positive terminal of the power battery to the positive terminal of the high-voltage bus, completing the high-voltage power-on. If the terminal voltage is <36V, it indicates that the energy storage unit is insufficient to reliably drive the high-voltage relay to engage. The microprocessor 7 prompts "Please sit down again to replenish energy" through the instrument panel or voice prompt, and enters the multiple-sit-to-accumulate energy storage mode, waiting for the energy generated by the driver's next seat to continue charging the energy storage unit. When the accumulated voltage of the energy storage unit reaches 36V, the high-voltage power-on is automatically executed.

[0070] Furthermore, after the high voltage is powered on, the high voltage bus is energized, the DC / DC converter is awakened and starts working. At this time, the DC / DC converter converts the high voltage DC power of the power battery into a stable low voltage DC power, which is then transmitted to the low voltage battery 5 through the conductor to charge the low voltage battery that is depleted.

[0071] Once the low-voltage battery voltage returns to the normal range (≥12V), the vehicle's low-voltage system receives stable power, and the instrument panel displays "Battery charging." The driver can then engage gears and drive normally. After the low-voltage battery charge returns to a safe level (typically SOC (State of Charge) ≥50%), the DC / DC converter continues to operate to supply power to the vehicle's low-voltage electrical components. The electrical energy generated by piezoelectric module 1 continues to be used as auxiliary energy and fed into the low-voltage system, achieving closed-loop energy recovery. This allows the vehicle to start successfully even when the battery is depleted.

[0072] According to one embodiment of this application, after detecting whether the low-voltage battery voltage of the vehicle is in a depleted state, the method further includes: if the low-voltage battery voltage of the vehicle is not in a depleted state, then the remaining energy value corresponding to the current piezoelectric energy signal is rectified and regulated and sent to the low-voltage battery.

[0073] Specifically, if the output voltage of the low-voltage battery 5 is ≥12V, it is determined that the low-voltage battery 5 is in a normal state. The electrical energy generated by the piezoelectric module 1 is directly fed into the low-voltage battery 5 after being processed by the rectifier and voltage regulator circuit 2, as an auxiliary charging and energy recovery. At this time, the vehicle can start normally according to the conventional starting procedure (press the brake + shift gears), and the system process ends.

[0074] Therefore, this application converts the energy generated by the driver in the driver's seat into electrical energy to power the low-voltage battery in the vehicle, effectively saving energy. When the battery is low on power, this energy can meet the vehicle's starting requirements, allowing the vehicle to start smoothly and charge the low-voltage battery using a DC / DC converter, solving the problem of the vehicle being unable to start when the battery is low on power. Starting the vehicle by detecting the driver's occupancy status can replace some of the in-vehicle start switches, reducing component costs and avoiding the cumbersome operation of traditional car button starters. At the same time, this starting method is more reliable and less prone to accidental triggering, effectively avoiding the energy waste and safety hazards caused by accidental triggering when opening the car door.

[0075] According to the vehicle start control method of this application embodiment, the current pressure value corresponding to the current pressure signal of the driver's seat is calculated, and the current waveform change rate of the current pressure signal is collected. Based on the current pressure value and the current waveform change rate, if it is determined that the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, the current piezoelectric energy signal is used to control the vehicle to power on at low voltage. When the low-voltage battery voltage is in a depleted state, the vehicle meets the high-voltage power-on conditions, and the energy value of the current piezoelectric energy signal reaches a preset threshold, the current piezoelectric energy signal is used to control the vehicle to perform a high-voltage power-on operation to charge the low-voltage battery. This solves the problem of the vehicle failing to start normally due to a depleted low-voltage battery. By using the pressure signal and energy generated when the driver sits down, when the battery is depleted, this energy is used to drive high-voltage power-on to wake up the DC / DC converter to charge the low-voltage battery, thereby starting the vehicle.

[0076] Next, the vehicle start control device according to the embodiments of this application is described with reference to the accompanying drawings.

[0077] Figure 4 This is a block diagram of a vehicle start control device according to an embodiment of this application.

[0078] like Figure 4 As shown, the vehicle start control device 10 includes: a data acquisition module 100, a control module 200, and a charging module 300.

[0079] The acquisition module 100 is used to respond to the current pressure signal and the current piezoelectric energy signal received from the driver's seat, calculate the current pressure value corresponding to the current pressure signal, and acquire the current waveform change rate of the current pressure signal. The control module 200 is used to determine whether the current pressure signal is valid based on the current pressure value and the current waveform change rate, and when the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, it uses the current piezoelectric energy signal to control the vehicle to power on at low voltage. The charging module 300 is used to detect whether the low-voltage battery voltage of the vehicle is in a depleted state in response to the completion of low-voltage power-on. If the low-voltage battery voltage is in a depleted state, when the vehicle meets the conditions for high-voltage power-on and the energy value of the current piezoelectric energy signal reaches a preset threshold, the current piezoelectric energy signal is used to control the vehicle to perform high-voltage power-on operation to charge the low-voltage battery.

[0080] According to one embodiment of this application, the control module 200 is specifically used for: The current pressure signal is deemed valid when the current pressure value is greater than the first preset threshold, the current pressure value remains stable for a longer period than the second preset threshold, and the current waveform change rate matches the preset waveform template to the first preset matching threshold.

[0081] According to one embodiment of this application, the control module 200 is specifically used for: The vehicle's smart key is located to determine whether it is in the driver's seat area; If the smart key is in the driver's seat area, the identity verification meets the preset verification conditions.

[0082] According to one embodiment of this application, after determining whether the smart key is in the driver's seat area, the control module 200 is further configured to: If the smart key is not in the driver's seat area, the vehicle start-up process will be terminated.

[0083] According to one embodiment of this application, after the smart key is in the driver's seat area, the control module 200 is further configured to: Obtain the driver's preset weight range and driver's seat waveform characteristics pre-stored in the smart key; When the current weight value corresponding to the current pressure value is within the driver's preset weight range, and the matching degree between the current waveform change rate and the driver's seated waveform characteristics reaches the second preset matching threshold, the identity verification is determined to meet the preset verification conditions.

[0084] According to one embodiment of this application, after detecting whether the low-voltage battery voltage of the vehicle is in a depleted state, the charging module 300 is further configured to: If the vehicle's low-voltage battery is not in a depleted state, the remaining energy value corresponding to the current piezoelectric energy signal will be rectified and regulated before being sent to the low-voltage battery.

[0085] According to the vehicle start control device of this application embodiment, the current pressure value corresponding to the current pressure signal of the driver's seat is calculated, and the current waveform change rate of the current pressure signal is collected. Based on the current pressure value and the current waveform change rate, if it is determined that the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, the current piezoelectric energy signal is used to control the vehicle to power on at low voltage. When the low-voltage battery voltage is in a depleted state, the vehicle meets the high-voltage power-on conditions, and the energy value of the current piezoelectric energy signal reaches a preset threshold, the current piezoelectric energy signal is used to control the vehicle to perform a high-voltage power-on operation to charge the low-voltage battery. This solves the problem of the vehicle failing to start normally due to a depleted low-voltage battery. By using the pressure signal and energy generated when the driver sits down, when the battery is depleted, this energy is used to drive high-voltage power-on to wake up the DC / DC converter to charge the low-voltage battery, thereby starting the vehicle.

[0086] Figure 5 A schematic diagram of the structure of a vehicle provided in an embodiment of this application. The vehicle may include: The memory 501, the processor 502, and the computer program stored on the memory 501 and capable of running on the processor 502.

[0087] When processor 502 executes the program, it implements the vehicle start control method provided in the above embodiments.

[0088] Furthermore, the vehicle also includes: Communication interface 503 is used for communication between memory 501 and processor 502.

[0089] The memory 501 is used to store computer programs that can run on the processor 502.

[0090] Memory 501 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0091] If the memory 501, processor 502, and communication interface 503 are implemented independently, then the communication interface 503, memory 501, and processor 502 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0092] Optionally, in a specific implementation, if the memory 501, processor 502, and communication interface 503 are integrated on a single chip, then the memory 501, processor 502, and communication interface 503 can communicate with each other through an internal interface.

[0093] Processor 502 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0094] This embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the vehicle start control method described above.

[0095] A fifth aspect of this application provides a computer program product, including a computer program that is executed to implement the vehicle start control method described above.

[0096] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0097] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0099] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0100] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0101] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0102] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0103] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A vehicle starting control method, characterized in that, The method includes the following steps: In response to receiving the current pressure signal and the current piezoelectric energy signal from the driver's seat, the system calculates the current pressure value corresponding to the current pressure signal and collects the current waveform change rate of the current pressure signal. Based on the current pressure value and the current waveform change rate, it is determined whether the current pressure signal is valid. When the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, the current piezoelectric energy signal is used to control the vehicle to power on at low voltage. In response to the vehicle having completed low-voltage power-on, the system detects whether the low-voltage battery voltage of the vehicle is in a depleted state. If the low-voltage battery voltage is in the depleted state, then when the vehicle meets the high-voltage power-on conditions and the energy value of the current piezoelectric energy signal reaches a preset threshold, the system uses the current piezoelectric energy signal to control the vehicle to perform a high-voltage power-on operation to charge the low-voltage battery.

2. The method according to claim 1, characterized in that, The step of determining whether the current pressure signal is valid based on the current pressure value and the current waveform change rate includes: The current pressure signal is deemed valid when the current pressure value is greater than a first preset threshold, the duration of stability of the current pressure value is greater than a second preset threshold, and the matching degree between the current waveform change rate and the preset waveform template reaches a first preset matching threshold.

3. The method according to claim 1, characterized in that, The driver's identity verification meets preset verification conditions, including: The smart key of the vehicle is located to determine whether the smart key is in the driver's seat area; If the smart key is located in the driver's seat area, the identity verification meets the preset verification conditions.

4. The method according to claim 3, characterized in that, After determining whether the smart key is in the driver's seat area, the process also includes: If the smart key is not located in the driver's seat area, the vehicle start-up process is terminated.

5. The method according to claim 3, characterized in that, After the smart key is positioned in the driver's seat area, it further includes: Obtain the driver's preset weight range and driver's seat waveform characteristics pre-stored in the smart key; When the current weight value corresponding to the current pressure value is within the driver's preset weight range, and the matching degree between the current waveform change rate and the driver's seated waveform characteristics reaches a second preset matching threshold, it is determined that the identity verification meets the preset verification conditions.

6. The method according to claim 1, characterized in that, After detecting whether the low-voltage battery of the vehicle is in a depleted state, the method further includes: If the low-voltage battery of the vehicle is not in the depleted state, the remaining energy value corresponding to the current piezoelectric energy signal is rectified and regulated and then sent to the low-voltage battery.

7. A vehicle starting control device, characterized in that, include: The acquisition module is used to respond to the received current pressure signal and current piezoelectric energy signal from the driver's seat, calculate the current pressure value corresponding to the current pressure signal, and acquire the current waveform change rate of the current pressure signal; The control module is used to determine whether the current pressure signal is valid based on the current pressure value and the current waveform change rate, and when the current pressure signal is valid and the driver's identity verification meets the preset verification conditions, it uses the current piezoelectric energy signal to control the vehicle to power on at low voltage. The charging module is used to detect whether the low-voltage battery voltage of the vehicle is in a depleted state in response to the vehicle having completed low-voltage power-on. If the low-voltage battery voltage is in the depleted state, when the vehicle meets the high-voltage conditions and the energy value of the current piezoelectric energy signal reaches a preset threshold, the module uses the current piezoelectric energy signal to control the vehicle to perform a high-voltage operation to charge the low-voltage battery.

8. The apparatus according to claim 7, characterized in that, The control module is specifically used for: The current pressure signal is deemed valid when the current pressure value is greater than a first preset threshold, the duration of stability of the current pressure value is greater than a second preset threshold, and the matching degree between the current waveform change rate and the preset waveform template reaches a first preset matching threshold.

9. A vehicle, characterized in that, include: A memory, a processor, and a computer program stored in the memory and capable of running on the processor, the processor executing the program to implement the vehicle start control method as described in any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the vehicle start control method as described in any one of claims 1-6.

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