Intelligent power-off control method of vehicle-mounted refrigerator and related device
By combining vehicle status and refrigerator contents detection with battery voltage monitoring, the system enables intelligent delayed or immediate power-off control of the vehicle refrigerator, resolving the conflict between food preservation and energy conservation, and improving user experience and vehicle reliability.
Patent Information
- Application Number
- CN202512051207.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-03-10
AI Technical Summary
Existing power-off solutions for car refrigerators cannot balance food preservation and energy saving. Direct power-off causes food to spoil, while timer-delayed shutdown wastes energy and affects vehicle starting reliability.
By collecting data on vehicle ignition status and door lock status, and combining this with a pressure sensor inside the car refrigerator to determine if there are any items present, and by monitoring the car battery voltage in real time, intelligent control can be achieved to delay power-off or immediately shut down the vehicle.
It enables intelligent power management based on actual needs, preventing items from spoiling and energy waste, ensuring vehicle starting safety, and improving user experience.
Smart Images
Figure CN121625995A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of vehicle power-off control, and particularly relates to an intelligent power-off control method for a vehicle-mounted refrigerator and a related device. BACKGROUND
[0002] With the popularity of vehicle-mounted electrical appliances, vehicle-mounted refrigerators are widely used because they can meet the needs of users for preserving items during travel. The power-off logic design directly affects the use experience and vehicle power consumption.
[0003] The existing power-off scheme for vehicle-mounted refrigerators has defects and cannot meet the dual needs of preserving items and saving power, affecting user safety and vehicle start reliability.
[0004] The current power-off method of vehicle-mounted refrigerators after the vehicle is turned off mainly includes two types. One is direct power-off, that is, the refrigerator stops working immediately after the vehicle is turned off. The other is to realize delayed shutdown by relying on a simple timer, that is, the refrigerator continues to work for a preset fixed time after the vehicle is turned off before being powered off, and lacks a judgment mechanism for the actual storage state in the refrigerator.
[0005] Both of the above-mentioned schemes have obvious defects. When the refrigerator stores items such as medicines, breast milk, food, and other items that need to be preserved, if the user forgets to take them out in time, the items will be heated and deteriorated due to the loss of refrigeration. When the refrigerator is empty, the timer delay shutdown scheme will still work for a preset time, unnecessarily consuming the battery power of the car, which may cause the battery to run out of power and affect the vehicle start again. It cannot intelligently adapt the power-off strategy according to the actual use scenario of the refrigerator. SUMMARY
[0006] The purpose of the present application is to provide an intelligent power-off control method for a vehicle-mounted refrigerator and a related device to solve the problem that the prior art cannot intelligently determine whether to perform delayed power-off and cannot meet the contradictory needs of "preserving items" and "saving power".
[0007] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: In a first aspect, the present application provides an intelligent power-off control method for a vehicle-mounted refrigerator, comprising: Collecting vehicle ignition state data and vehicle door locking state data, and when the data meets a preset condition, determining that the vehicle state is turned off and locked; Based on the vehicle turned off and locked state, obtaining pressure data at the bottom of the vehicle-mounted refrigerator, comparing the pressure data with a preset threshold, and determining whether there are items in the vehicle-mounted refrigerator; If items are detected in the vehicle-mounted refrigerator, delayed power-off is started, and if there are no items in the vehicle-mounted refrigerator, the refrigerator is turned off; In the delay power-down process, the voltage of the automobile storage battery is acquired in real time, and when the voltage is lower than a preset safety threshold, the refrigerator is forced to be turned off.
[0008] Further, the vehicle ignition state data and the vehicle door locking state data are collected, including: When collecting the vehicle ignition state data, communication is established between the vehicle OBD interface and the vehicle electronic control unit (ECU) through the on-board automatic diagnostic system (OBD), and the engine ignition state parameters are read in real time. If the ECU feedback ignition signal is interrupted and the duration exceeds the preset time, it is determined that the vehicle is in an off state. If the feedback ignition signal is normal, it is determined that the vehicle is in a running state. When collecting the vehicle door locking state data, the locking state data of the four doors and the trunk door is acquired by receiving the CAN bus signal of the vehicle body control system. If all the doors feedback locking signals are valid and the duration exceeds the preset time, it is determined that the vehicle is in a door locking state. If any door feedbacks an unlocking signal or an incomplete closing signal, it is determined as a non-locking state.
[0009] Further, when the data meets the preset condition, the vehicle state is determined to be off and locked, including: When the vehicle is off and the doors are locked at the same time, the state detection process of the vehicle refrigerator is started. If any state does not meet the condition, the refrigerator is normally powered and the vehicle refrigerator state detection is not triggered.
[0010] Further, based on the vehicle off and locked state, the pressure data at the bottom of the vehicle refrigerator is acquired, and the pressure data and the preset threshold are compared to determine whether there is an object in the vehicle refrigerator, including: The weight data corresponding to the bottom of the vehicle refrigerator is collected in real time by the sensor, and the collected weight data is compared with the preset threshold. If the weight data is greater than the preset weight threshold and the state is stable for more than a preset time, it is determined that there is an object in the box. If the weight data is less than or equal to the preset weight threshold and the state is stable for more than a preset time, it is determined that there is no object in the box. After the detection is completed, the determination result is transmitted to the refrigerator main control board in real time, and the subsequent intelligent power-down judgment process is triggered.
[0011] Further, a plurality of pressure sensors are uniformly arranged at the bottom of the inner tank of the vehicle refrigerator, which are uniformly distributed. The sensors are connected to the refrigerator main control board for transmitting detection data. When acquiring the weight data, the data of all pressure sensors is summed and averaged.
[0012] Further, when it is detected that there is an object in the vehicle refrigerator, the delay power-down is started, and when it is detected that there is no object in the vehicle refrigerator, the refrigerator is turned off, including: When the main control board detects items inside the vehicle refrigerator, it automatically initiates a delayed power-down procedure. Simultaneously, a visual alert is triggered by the LED display on the refrigerator panel, along with an audible alert from the built-in buzzer. During the delayed power-down period, the main control board records the timer duration in real time and continuously monitors the refrigerator's internal temperature. If the vehicle is restarted or the doors are unlocked before the timer expires, the delayed power-down procedure terminates, and the refrigerator resumes normal power supply. If the set delay duration is reached and the vehicle remains in an off-center and locked state, the normal power-down process is executed, disabling all refrigerator functions and cutting off power.
[0013] When it is determined that there are no items in the box, the main control board immediately executes the power-off procedure. The main control board automatically records the power-off time and the battery voltage before power-off and stores them in the local cache.
[0014] Furthermore, the step of acquiring the car battery voltage in real time during the delayed power-off process, and forcibly shutting down the refrigerator when the voltage falls below a preset safety threshold, includes: Real-time acquisition of car battery output voltage data, and preset battery safety voltage threshold; When the battery voltage is detected to be ≥ the preset battery safety voltage threshold, the delayed power-off procedure continues to execute normally. When the battery voltage is detected to be lower than the preset safe battery voltage threshold, an early warning is immediately triggered: the LED display on the refrigerator panel flashes, the buzzer emits an intermittent warning sound, and a warning message is pushed to the user's mobile phone via the vehicle communication module to remind the user to take timely action; after the warning is triggered, the main control board immediately executes the forced power-off procedure.
[0015] If, during the warning phase, the battery voltage rises to ≥ the preset battery safety voltage threshold and remains there for a preset duration, the warning state will be lifted, and the delayed power-off procedure will resume normal execution.
[0016] Secondly, the present invention provides an intelligent power-off control system for a vehicle-mounted refrigerator, comprising: The data acquisition module is used to collect vehicle ignition status data and door lock status data. When the data meets the preset conditions, the vehicle status is determined to be off and locked. The judgment module is used to obtain the pressure data at the bottom of the car refrigerator based on the vehicle's ignition and locking status, compare the pressure data with a preset threshold, and determine whether there are items inside the car refrigerator. The power-down mode selection module is used to start a delayed power-down when it detects that there are items in the vehicle refrigerator, and to control the refrigerator to turn off when it detects that there are no items in the vehicle refrigerator. The protection module is used to acquire the car battery voltage in real time during the delayed power-off process, and to forcibly shut down the refrigerator when the voltage is lower than a preset safety threshold.
[0017] Thirdly, the present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the intelligent power-off control method for a vehicle-mounted refrigerator.
[0018] Fourthly, the present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the intelligent power-off control method for a vehicle-mounted refrigerator.
[0019] Compared with the prior art, the present invention has the following technical effects: This invention achieves fully automatic control by acquiring data collaboratively through OBD, CAN bus, and sensors, combined with intelligent judgment based on different scenarios, thus delaying power-off when items are present and immediately powering off when no items are present, without requiring manual intervention from the user.
[0020] The delayed power-off procedure provides continuous insulation for the items inside the box, preventing them from overheating and deteriorating during power outages; battery voltage monitoring prevents over-discharge, ensuring both the safety of the items and the safety of vehicle startup.
[0021] Power off immediately when there are no items to avoid unnecessary energy consumption during no-load operation; the energy-saving insulation mode during the delayed power-off period reduces power loss, effectively protects the battery, and extends its service life.
[0022] With visual prompts on the control panel, audible prompts from a buzzer, and remote alerts via a mobile app, users can monitor the refrigerator's operating status and battery risks in real time, enhancing their peace of mind. Attached Figure Description
[0023] Figure 1 This is a flowchart of the present invention. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings: Example 1, please refer to Figure 1 This invention provides an intelligent power-off control method for a vehicle-mounted refrigerator, comprising: Collect vehicle ignition status data and door lock status data. When the data meets the preset conditions, determine that the vehicle status is off and locked. Based on the vehicle's ignition off and locked status, the pressure data at the bottom of the vehicle refrigerator is obtained, and the pressure data is compared with a preset threshold to determine whether there are items inside the vehicle refrigerator. If items are detected inside the car refrigerator, the system will start a delayed power-off; if no items are detected inside the car refrigerator, the system will shut down the refrigerator. During the delayed power-off process, the car battery voltage is monitored in real time, and the refrigerator is forcibly shut down when the voltage falls below a preset safety threshold.
[0025] This invention achieves intelligent power management by delaying power when needed and shutting off power when not needed, without requiring manual user intervention. It effectively prevents important items inside the vehicle from deteriorating due to overheating during power outages, improving both ease of use and item safety. This avoids unnecessary energy consumption when the refrigerator is not in use, protecting the car battery and extending its lifespan. Visual or auditory cues provide users with a clear understanding of the refrigerator's operating status, offering greater peace of mind.
[0026] Example 2: This invention provides an intelligent power-off control method for a vehicle-mounted refrigerator, comprising: This intelligent power-off control method for vehicle refrigerators aims to achieve intelligent, safe, energy-efficient, and high-quality user experience through multi-dimensional status detection and intelligent judgment. It includes progressive management of data acquisition, item detection inside the refrigerator, scenario-based power-off control, and power safety monitoring. Specific expansion steps are as follows: Step 1: Data acquisition and vehicle status detection Vehicle ignition status data: Communication is established with the vehicle's electronic control unit (ECU) via the on-board diagnostic (OBD) interface to read engine ignition status parameters in real time. If the ECU's ignition signal is interrupted for more than 3 seconds to avoid misjudging a momentary engine shutdown, the vehicle is determined to be in a shutdown state; if the ignition signal is normal, the vehicle is determined to be in a running state.
[0027] Door locking status data: By receiving CAN bus signals from the vehicle body control system, the locking status data of the four doors (driver's side, passenger side, and left and right rear doors) and the trunk lid are obtained. When all doors return a valid locking signal for more than 2 seconds, the vehicle is determined to be in a locked state; if any door returns an unlock signal or a signal that it is not fully closed, it is determined to be in an unlocked state.
[0028] The initial voltage data of the vehicle battery is acquired simultaneously as a benchmark for subsequent power monitoring, as well as the current working status of the vehicle refrigerator, to ensure comprehensive status judgment.
[0029] The subsequent internal status detection process is initiated only when both the vehicle engine and the doors are simultaneously locked. If neither condition is met, the refrigerator is kept powered on and the power-off decision is not triggered.
[0030] Step 2: Check if there are any items inside the refrigerator. Three high-precision pressure sensors are evenly distributed at the bottom of the inner liner of the vehicle refrigerator in an equilateral triangle pattern, ensuring that at least two sensors can detect items regardless of their placement, avoiding blind spots in single-point sensing. The sensors are connected to the refrigerator's main control board via the I2C communication protocol to ensure the stability and real-time performance of data transmission.
[0031] Each time the refrigerator is powered on and initialized, it automatically performs a zero-point calibration process, recording the reference voltage values of the three sensors under the current no-load state to eliminate the influence of the device's own weight and installation errors. During the detection phase, the real-time voltage values of the three sensors are collected in real time, converted into corresponding weight data, and the average of the three data is taken as the actual weight inside the refrigerator.
[0032] A preset weight threshold is set. For a standard 50L car refrigerator, the preset threshold is 0.1kg. A weight exceeding 0.1kg is considered to contain an item. The collected average weight is compared to the preset threshold: if the average weight > 0.1kg and remains stable for more than 1 second to avoid false positives due to slight shaking of items, then the refrigerator is definitively considered to contain an item; if the average weight ≤ 0.1kg and remains stable for more than 3 seconds to exclude momentary removal or placement of items, then the refrigerator is considered to be empty.
[0033] After the test is completed, the judgment result is transmitted to the refrigerator's main control board in real time, triggering the subsequent intelligent power-off judgment process.
[0034] Step 3: Power-off control based on scenario: delay power-off when there are items, and immediately power-off when there are no items; When the refrigerator detects that there are items inside, the main control board automatically starts the delayed power-off program. The default delay time is set to 4 hours, which can be customized via the refrigerator touch panel or mobile APP, with an adjustment range of 1-12 hours. At the same time, the refrigerator's operating mode during the delay period is set to "energy-saving insulation mode", which reduces the cooling power to 50% of the normal power and maintains the temperature inside the refrigerator within the set value ±2℃, reducing battery energy consumption.
[0035] When the delayed power-off program starts, it triggers two prompts: Visual prompt: The refrigerator panel LED display lights up and scrolls the message "Vehicle is off and locked, there are items inside, power-off will be delayed by 4 hours" for 30 seconds, then turns to a solid-on prompt icon (battery + clock combination icon); Auditory prompt: The refrigerator's built-in buzzer emits 3 short beeps. If the user unlocks the vehicle or opens the refrigerator door during the prompt period, the prompt will automatically stop, the delayed power-off timer will pause, and the refrigerator will resume normal operation.
[0036] During the delay timer, the main control board records the timer duration in real time and continuously monitors the temperature inside the refrigerator to ensure insulation. If the vehicle is restarted or the door is unlocked before the delay timer ends, the delayed power-off procedure will terminate immediately and the refrigerator will resume normal power supply. If the set delay timer expires and the vehicle is still in the "off + locked" state, the normal power-off procedure will be executed, all refrigerator functions will be turned off, and the power supply will be cut off.
[0037] When it is determined that there are no items in the compartment, the main control board re-verifies the vehicle status (to ensure that it is still "off + locked") and the weight status in the compartment (to ensure that there are still no items) to avoid abnormal power-off caused by misjudgment.
[0038] Once everything is confirmed to be correct, immediately execute the power-down procedure: First, shut down the refrigerator's core operating components such as the refrigeration compressor and cooling fan, and disconnect high-power loads; then, turn off the power to auxiliary components such as control panel lighting and sensors; finally, disconnect the refrigerator's main power circuit to complete a complete shutdown. The entire power-down process should take no more than 2 seconds to ensure a rapid cessation of power consumption.
[0039] The main control board automatically records information such as power-off time, battery voltage before power-off, and reason for power-off (no items), and stores it in the local cache for easy troubleshooting or user query.
[0040] Step 4: Battery Monitoring A voltage sensor is connected in series at the refrigerator's power input terminal to collect the output voltage data of the car battery in real time; the sensor data is transmitted to the main control board every 0.5 seconds to ensure real-time monitoring.
[0041] The battery safety voltage threshold is preset, and a warning threshold (11.8V) is set at the same time to form a two-level control of "warning-protection".
[0042] When the battery voltage is detected to be ≥11.8V, the delayed power-off procedure continues to execute normally, and the refrigerator continues to operate in energy-saving insulation mode.
[0043] When the voltage drops to between 11.5V and 11.8V, an immediate warning is triggered: the refrigerator panel LED display flashes the message "Battery voltage is low, power will be cut off soon," and the buzzer emits an intermittent warning sound; at the same time, a warning message is pushed to the user's mobile APP via the vehicle's Bluetooth to remind the user to take timely action.
[0044] When the voltage continues to drop to <11.5V, or if the voltage does not recover to a safe range within 10 seconds after the warning, the main control board immediately executes the forced power-down procedure: quickly cuts off all power circuits of the refrigerator and terminates the delayed power-down program; at the same time, it records data such as the forced power-down time and the voltage value before power-down, so that users can easily trace it later.
[0045] If, during the warning phase, the battery voltage rises to ≥11.8V and remains stable for 3 seconds, the warning state is lifted, and the delayed power-off procedure resumes normal execution, ensuring the safety of items inside the box to the greatest extent possible, provided the battery condition allows.
[0046] This invention achieves fully automatic control by acquiring data collaboratively through OBD, CAN bus, and sensors, combined with intelligent judgment based on different scenarios, thus delaying power-off when items are present and immediately powering off when no items are present, without requiring manual intervention from the user.
[0047] The delayed power-off procedure provides continuous insulation for the items inside the box, preventing them from overheating and deteriorating during power outages; battery voltage monitoring prevents over-discharge, ensuring both the safety of the items and the safety of vehicle startup.
[0048] Power off immediately when there are no items to avoid unnecessary energy consumption during no-load operation; the energy-saving insulation mode during the delayed power-off period reduces power loss, effectively protects the battery, and extends its service life.
[0049] With visual prompts on the control panel, audible prompts from a buzzer, and remote alerts via a mobile app, users can monitor the refrigerator's operating status and battery risks in real time, enhancing their peace of mind.
[0050] This invention coordinates judgments based on three key dimensions: vehicle status, refrigerator load, and battery charge. It then provides precise power-off control strategies according to different scenarios, ultimately achieving intelligent management of "delayed power supply when needed, and immediate power cut-off when not needed." First, it confirms whether the vehicle is truly off and locked, avoiding misjudgments caused by sudden engine shutdown or doors not being properly closed. Next, it determines whether there are items inside the refrigerator, thus distinguishing between scenarios requiring continuous heat preservation and those where power is not needed. Finally, during the delayed power supply phase, it monitors the car battery voltage in real time to prevent excessive battery discharge from affecting vehicle starting. This ensures the safety of items inside the refrigerator while also considering the vehicle's electrical safety, all without requiring manual user intervention.
[0051] The process is divided into four steps. The first step is vehicle status detection. The system communicates with the Electronic Control Unit (ECU) via the On-Board Diagnostics (OBD) interface to read the engine ignition status. Only when the ignition signal is interrupted for more than 3 seconds is the engine considered off. Simultaneously, by receiving signals from the Controller Area Network (CAN) bus, the system obtains the locking status of all doors (driver's side, passenger side, rear left and right doors, and trunk door). Only when all doors are locked for more than 2 seconds is the refrigerator considered locked. Only when both engine off and locking are satisfied does the process proceed to the next step. The second step is internal item detection. Three high-precision pressure sensors are arranged in an equilateral triangle at the bottom of the refrigerator's inner liner and connected to the main control board via a communication protocol. The refrigerator automatically performs zero-point calibration upon power-on to eliminate the influence of its own weight and installation errors. During detection, the voltage data from the three sensors is collected and converted into weight. The average value is compared with a preset threshold of 0.1 kg. If the weight exceeds the threshold and remains stable for more than 1 second, the refrigerator is considered to contain items; if the weight is below the threshold and remains stable for more than 3 seconds, the refrigerator is considered to be empty. The third step is scenario-based power-off control. When there are items, a delayed power-off is initiated, with a default delay of 4 hours (which can be customized from 1 to 12 hours via the touch panel or mobile APP). At the same time, it switches to energy-saving insulation mode, reducing the cooling power to 50% of the normal level. It will also display a scrolling LED screen prompt for 30 seconds before switching to a constantly lit icon and emitting 3 beeps. If the user unlocks the vehicle or opens the door, the timer will pause. When there are no items, after re-verifying the vehicle and weight status, the compressor, fan, and other core components will be shut down sequentially within 2 seconds, followed by the auxiliary components, and finally the main power supply will be cut off. At the same time, the power-off information will be recorded. The fourth step is power monitoring. A voltage sensor is connected in series at the power input of the refrigerator, and the battery voltage data is transmitted to the main control board every 0.5 seconds. The preset warning threshold is 11.8V and the safety protection threshold is 11.5V. The refrigerator operates normally when the voltage is ≥11.8V. When the voltage is between 11.5V and 11.8V, the warning is activated (screen flashing prompt, buzzer intermittent alarm, and mobile APP push message). If the voltage is <11.5V or the voltage does not rise within 10 seconds of the warning, the refrigerator is forced to shut down. After the voltage rises, the normal delay program resumes.
[0052] This invention achieves fully automated intelligent power management, adapting to different usage scenarios without manual user intervention. When items are inside, delayed power-off and energy-saving insulation modes maintain the internal temperature, effectively preventing items from overheating and spoiling due to sudden power outages, thus ensuring item safety. Real-time battery voltage monitoring, through a two-level warning and forced power-off mechanism, prevents excessive battery discharge, ensuring the vehicle can start normally afterward, balancing item and vehicle safety. In empty scenarios, the immediate power-off design directly avoids unnecessary energy consumption under no-load conditions. Combined with the low-power operation mode during the delayed phase, it significantly reduces battery wear and extends battery life. Furthermore, the solution incorporates a multi-dimensional alert mechanism, including visual prompts on the refrigerator panel, audible prompts from the built-in buzzer, and remote alerts via a mobile app. This allows users to monitor the refrigerator's operating status and battery risks at any time, eliminating worries about forgetting to remove items or running out of power, enhancing peace of mind and convenience.
[0053] In another embodiment of the present invention, an intelligent power-off control system for a vehicle-mounted refrigerator is provided, which can be used to implement the above-mentioned intelligent power-off control method for a vehicle-mounted refrigerator. Specifically, the system includes: The data acquisition module is used to collect vehicle ignition status data and door lock status data. When the data meets the preset conditions, the vehicle status is determined to be off and locked. The judgment module is used to obtain the pressure data at the bottom of the car refrigerator based on the vehicle's ignition and locking status, compare the pressure data with a preset threshold, and determine whether there are items inside the car refrigerator. The power-down mode selection module is used to start a delayed power-down when it detects that there are items in the vehicle refrigerator, and to control the refrigerator to turn off when it detects that there are no items in the vehicle refrigerator. The protection module is used to acquire the car battery voltage in real time during the delayed power-off process, and to forcibly shut down the refrigerator when the voltage is lower than a preset safety threshold.
[0054] The module division in this embodiment of the invention is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the invention can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.
[0055] In another embodiment of the present invention, a computer device is provided, comprising a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in the computer storage medium to achieve a corresponding method flow or corresponding function. The processor described in this embodiment of the present invention can be used in the operation of an intelligent power-off control method for a vehicle-mounted refrigerator.
[0056] In another embodiment of the present invention, a storage medium is provided, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, the storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps of the intelligent power-off control method for a vehicle-mounted refrigerator in the above embodiments.
[0057] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0058] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0059] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0060] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. A method for intelligent power down control of a vehicle refrigerator, characterized in that, The method comprises the following steps: Collecting vehicle ignition state data and vehicle door locking state data, and determining that the vehicle is in an off state and locked state when the data meets the preset condition; Based on the vehicle off and locked state, the pressure data at the bottom of the vehicle-mounted refrigerator is obtained, and the pressure data is compared with the preset threshold to determine whether there is any object in the vehicle-mounted refrigerator; If there is any object in the vehicle-mounted refrigerator, start the delayed power-down; if there is no object in the vehicle-mounted refrigerator, control the refrigerator to shut down; During the delayed power-down process, the battery voltage of the automobile is obtained in real time, and when the voltage is lower than the preset safety threshold, the refrigerator is forced to shut down.
2. The intelligent power down control method of a vehicle refrigerator according to claim 1, characterized in that, The collection of vehicle ignition state data and vehicle door locking state data comprises: When collecting vehicle ignition state data, the OBD interface and the vehicle electronic control unit ECU are communicated through the vehicle-mounted automatic diagnosis system, and the engine ignition state parameters are read in real time; when the ECU feedback ignition signal is interrupted and the duration exceeds the preset time, it is determined that the vehicle is in an off state; if the feedback ignition signal is normal, it is determined that the vehicle is in a running state; When collecting vehicle door locking state data, the CAN bus signal of the vehicle body control system is received to obtain the locking state data of the four doors and the trunk door; when all the doors feedback locking signal is valid and the duration exceeds the preset time, it is determined that the vehicle is in a door locking state; if any door feedbacks an unlocking signal or an incomplete closing signal, it is determined as a non-locking state.
3. The intelligent power down control method of a vehicle refrigerator according to claim 2, characterized in that, When the data meets the preset condition, it is determined that the vehicle is in an off and locked state, which comprises: When the vehicle is off and the doors are locked at the same time, start the state detection process in the vehicle-mounted refrigerator; if any state does not meet the condition, maintain normal power supply of the refrigerator and do not trigger the state detection in the vehicle-mounted refrigerator.
4. The intelligent power down control method of a vehicle refrigerator according to claim 1, characterized in that, Based on the vehicle off and locked state, the pressure data at the bottom of the vehicle-mounted refrigerator is obtained, and the pressure data is compared with the preset threshold to determine whether there is any object in the vehicle-mounted refrigerator, which comprises: Real-time acquisition of the real-time corresponding weight data at the bottom of the vehicle-mounted refrigerator through the sensor; comparison of the collected weight data with the preset threshold by the preset weight threshold: if the weight data is greater than the preset weight threshold and the state is stable for more than a preset time, it is determined that there is an object in the box; if the weight data is less than or equal to the preset weight threshold and the state is stable for more than a preset time, it is determined that there is no object in the box; after the detection is completed, the determination result is transmitted to the refrigerator main control board in real time to trigger the subsequent intelligent power-down judgment process.
5. The intelligent power down control method of a vehicle refrigerator according to claim 4, characterized in that, A plurality of pressure sensors are uniformly arranged at the bottom of the inner tank of the vehicle-mounted refrigerator, which are uniformly distributed and connected with the refrigerator main control board for transmitting detection data; when the weight data is obtained, the average value of the sum of the data of all pressure sensors is obtained.
6. The intelligent power down control method of a vehicle refrigerator according to claim 1, wherein, If there is any object in the vehicle-mounted refrigerator, start the delayed power-down; if there is no object in the vehicle-mounted refrigerator, control the refrigerator to shut down, which comprises: When it is determined that there is an article in the vehicle-mounted refrigerator, the main control board automatically starts a delay power-down program. At the same time when the delay power-down program is started, a visual prompt of turning on the LED display screen of the refrigerator panel and an auditory prompt of emitting sound through the built-in buzzer of the refrigerator are triggered. During the delay power-down period, the main control board records the timing duration in real time, and continuously monitors the temperature in the box. If the vehicle is re-ignited or the vehicle door is unlocked before the delay timing ends, the delay power-down program is terminated, and the refrigerator resumes normal power supply. If the timing reaches the set delay duration and the vehicle is still in the state of ignition-off and locking, the normal power-down process is executed, all functions of the refrigerator are turned off, and the power supply is cut off. When it is determined that there is no article in the box, the main control board immediately executes the power-down process, and the main control board automatically records the power-down time and the battery voltage before power-down, and stores them in the local cache.
7. The intelligent power down control method of a vehicle refrigerator according to claim 1, wherein, During the delay power-down process, the voltage of the automobile battery is acquired in real time, and when the voltage is lower than a preset safety threshold, the refrigerator is forcibly turned off, which comprises the following steps: The output voltage data of the automobile battery is collected in real time, and a preset battery safety voltage threshold is set. When it is monitored that the battery voltage is greater than or equal to the preset battery safety voltage threshold, the delay power-down program is normally executed. When it is monitored that the battery voltage is less than the preset battery safety voltage threshold, a warning prompt is triggered immediately, the LED display screen of the refrigerator panel flashes, the buzzer emits intermittent prompt sound, and a warning message is pushed to the bound user's mobile phone through the vehicle-mounted communication module to remind the user to handle it in time. After the warning prompt, the main control board immediately executes the forced power-down process. If the battery voltage rises to be greater than or equal to the preset battery safety voltage threshold and lasts for a preset duration during the warning stage, the warning state is released, and the normal execution of the delay power-down program is restored.
8. An intelligent power down control system for a vehicle refrigerator, characterized in that, It comprises the following steps: The data acquisition module is used to collect the vehicle ignition state data and the vehicle door locking state data. When the data meets the preset condition, it is determined that the vehicle is in the state of ignition-off and locking. The judgment module is used to acquire the pressure data at the bottom of the vehicle-mounted refrigerator based on the state of ignition-off and locking of the vehicle, compare the pressure data with a preset threshold, and determine whether there is an article in the vehicle-mounted refrigerator. The power-down mode selection module is used to start the delay power-down when it is detected that there is an article in the vehicle-mounted refrigerator, and control the refrigerator to shut down when it is detected that there is no article in the vehicle-mounted refrigerator. The protection module is used to acquire the voltage of the automobile battery in real time during the delay power-down process, and forcibly turn off the refrigerator when the voltage is lower than a preset safety threshold.
9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to realize the steps of the intelligent power-down control method of the vehicle-mounted refrigerator according to any one of claims 1 to 7.
10. A computer-readable storage medium storing a computer program, the computer program comprising instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 9. The computer program is executed by the processor to realize the steps of the intelligent power-down control method of the vehicle-mounted refrigerator according to any one of claims 1 to 7.