Power supply management method and system for automobile data recorder

Abstract

The invention discloses a power supply management method and system for an automobile data recorder, and belongs to the technical field of power management, and the method comprises the steps: periodically collecting illumination intensity data, and calculating a photovoltaic output power value according to the illumination intensity data; calculating a demand power value according to the demand of the automobile data recorder; the power supply proportion of the energy storage module, the solar module and the vehicle-mounted power supply module is distributed according to the photovoltaic output power value and the required power value, and a control instruction is generated; and controlling the energy storage module, the solar module and the vehicle-mounted power supply module to supply power to the automobile data recorder according to the control instruction. By periodically collecting the illumination intensity data, calculating the photovoltaic output power and dynamically distributing the power supply proportion of the energy storage module, the solar module and the vehicle-mounted power supply module in combination with the required power of the automobile data recorder, renewable energy sources such as solar energy are efficiently utilized, and the power supply stability and the cruising ability of the automobile data recorder are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of power management, and in particular to a power supply management method and system for a driving recorder. Background Art

[0002] At present, as an important auxiliary device of automobiles, the power supply problem of driving recorders has always attracted much attention. The traditional power supply method of driving recorders mainly relies on the on-board power supply module, that is, directly obtaining power from the vehicle's battery or cigarette lighter interface. However, this method has many shortcomings. For example, when the vehicle is turned off or the battery is low on power, the driving recorder will not work properly, resulting in interruption or loss of driving records. In addition, long-term use of the on-board power supply module may also damage the vehicle battery and shorten the battery life.

[0003] In order to solve the above problems, people began to try to use other power supply methods, such as energy storage modules and solar modules. The energy storage module can provide power to the dashcam when the vehicle is turned off or the battery is low, ensuring the continuity of the driving record. The solar module can use solar energy to power the dashcam to achieve sustainable use of energy. However, how to reasonably allocate and manage the power supply ratio of these power supply modules to ensure the normal operation of the dashcam and maximize the use of energy has become an urgent problem to be solved. Summary of the invention

[0004] To solve the above problems, the present invention provides a power supply management method and system for a driving recorder, which periodically collects light intensity data and calculates the photovoltaic output power. Combined with the required power of the driving recorder, the power supply ratio of the energy storage module, the solar module and the vehicle-mounted power supply module is dynamically allocated to achieve efficient use of renewable energy such as solar energy, thereby ensuring the power supply stability and endurance of the driving recorder.

[0005] The above objectives can be achieved through the following solutions: A power supply management method for a driving recorder comprises: periodically collecting light intensity data, and calculating a photovoltaic output power value according to the light intensity data; calculating a required power value according to the demand of the driving recorder; allocating a power supply ratio of an energy storage module, a solar module and an on-board power supply module according to the photovoltaic output power value and the required power value, and generating a control instruction; and controlling the energy storage module, the solar module and the on-board power supply module to supply power to the driving recorder according to the control instruction.

[0006] Furthermore, the power supply ratio of the energy storage module, the solar module and the vehicle power supply module is allocated according to the photovoltaic output power value and the required power value, and the control instruction is generated, including: judging the size of the photovoltaic output power value and a preset first threshold; when the photovoltaic output power value is less than the first threshold, obtaining the output power of the vehicle power supply module; judging whether the output power of the vehicle power supply module is 0; if so, according to the size of the required power value, using the energy storage module to supply power alone, and generating a first instruction.

[0007] Further, the determination of whether the output power of the vehicle-mounted power supply module is 0 includes: if the output power of the vehicle-mounted power supply module is not 0, collecting the power value of the energy storage module, and determining whether the power value is greater than a preset second threshold; if so, according to the size of the required power value, using the energy storage module and the vehicle-mounted power supply module for power supply, and generating a second instruction; if not, according to the size of the required power value, using the vehicle-mounted power supply module to supply power alone and charge the energy storage module, and generating a third instruction.

[0008] Further, the power supply is provided by the energy storage module and the vehicle power supply module according to the size of the required power value, and the second instruction is generated, including: calculating the ratio of the power value of the energy storage module to the capacity value of the energy storage module to obtain a power ratio; using the power ratio, calculating the power supply ratio of the energy storage module and the vehicle power supply module to obtain a first ratio value, and for the first ratio value ,have: ; In the formula, is the power ratio; and according to the first ratio value, the power supply ratio of the energy storage module and the vehicle power supply module is allocated to generate a second instruction.

[0009] Furthermore, the determination of the magnitude of the photovoltaic output power value and a preset first threshold value includes: when the photovoltaic output power value is greater than the first threshold value, determining whether the photovoltaic output power value is greater than the required power value; if so, based on the magnitude of the required power value, utilizing the solar module to supply power alone and charge the energy storage module, and generating a fourth instruction.

[0010] Further, the judging whether the photovoltaic output power value is greater than the required power value includes: when the photovoltaic output power value is less than or equal to the required power value, judging whether the output power of the vehicle power supply module is 0; if so, according to the size of the required power value, using the solar module and the energy storage module for power supply, and generating a fifth instruction; if not, according to the size of the required power value, using the solar module and the vehicle power supply module for power supply, and generating a sixth instruction.

[0011] Further, the step of using the solar module and the energy storage module to supply power according to the required power value and generating a fifth instruction includes: calculating the difference between the required power value and the photovoltaic output power value; calculating the power supply ratio of the energy storage module to the solar module according to the difference to obtain a second ratio value, and for the second ratio value ,have: ; In the formula, is the required power value, is the photovoltaic output power value; and according to the second ratio value, the power supply ratio of the solar module and the energy storage module is allocated to generate a fifth instruction.

[0012] Further, the power supply using the solar module and the vehicle-mounted power supply module according to the size of the required power value includes: collecting the power value of the energy storage module, and determining whether the power value of the energy storage module is greater than a preset third threshold value; if so, allocating the power supply ratio of the vehicle-mounted power supply module and the solar module according to the second ratio value; if not, calculating the power supply ratio of the vehicle-mounted power supply module and the solar module using the power ratio, the photovoltaic output power value and the required power value to obtain a third ratio value, and for the third ratio value ,have: ; In the formula, is the required power value, is the photovoltaic output power value, is the current power ratio; the power supply ratio of the on-board power supply module and the solar module is allocated according to the third ratio value, and the energy storage module is charged.

[0013] Furthermore, the method also includes: monitoring the power value of the energy storage module in real time, and judging the size of the power value of the energy storage module and a preset fourth threshold; when the power value of the energy storage module is less than the fourth threshold, switching to a preset backup energy storage module for power supply; monitoring the power value of the backup energy storage module in real time, and judging whether the power value of the backup energy storage module is 100%; if not, when the output power of the on-board power supply module is greater than 0, the on-board power supply module charges the backup energy storage module.

[0014] Based on the same inventive concept, the present invention also provides a power supply management system for a driving recorder, the system comprising: an illumination analysis module, used to periodically collect illumination intensity data, and calculate a photovoltaic output power value based on the illumination intensity data; a rated power calculation module, used to calculate a required power value based on the demand of the driving recorder; a power distribution module, used to distribute the power supply ratio of the energy storage module, the solar module and the vehicle-mounted power supply module according to the photovoltaic output power value and the required power value, and generate a control instruction; a power supply control module, used to control the energy storage module, the solar module and the vehicle-mounted power supply module to power the driving recorder according to the control instruction.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention periodically collects light intensity data and calculates photovoltaic output power, and dynamically allocates the power supply ratio of the energy storage module, the solar module and the vehicle-mounted power supply module in combination with the required power of the driving recorder; this method can efficiently utilize renewable energy such as solar energy and reduce dependence on non-renewable energy; 2. When the vehicle is turned off or the battery is low, the traditional power supply method of the driving recorder may cause power interruption. However, the present invention introduces energy storage modules and solar modules and intelligently allocates their power supply ratio to ensure the power supply stability and endurance of the driving recorder, thus avoiding the loss of driving records; 3. The present invention adjusts the power supply ratio of each power supply module in real time according to the power state of the energy storage module, the photovoltaic output power and the required power of the driving recorder; this dynamic allocation strategy optimizes the energy utilization efficiency, which not only meets the power demand of the driving recorder, but also avoids energy waste; 4. By real-time monitoring of the power value of the energy storage module and switching to the backup energy storage module for power supply when the power is insufficient, the present invention enhances the flexibility and reliability of the system; this ensures that the driving recorder can continue to work stably even if the main energy storage module is exhausted; 5. The present invention avoids long-term reliance on the vehicle-mounted power supply module by reasonably allocating the power supply ratio of each power supply module, thereby extending the service life of the equipment.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The present invention is a flowchart of a method for managing power supply of a driving recorder according to an embodiment of the present invention.

[0019] Figure 2 It is an execution flow chart of a power supply management method for a driving recorder according to an embodiment of the present invention.

[0020] Figure 3 The present invention is a schematic diagram of a power supply management system for a vehicle driving recorder according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Reference Figure 1 An embodiment of the present invention proposes a power supply management method for a driving recorder, which periodically collects light intensity data and calculates photovoltaic output power. Combined with the required power of the driving recorder, the power supply ratio of the energy storage module, the solar module and the vehicle power supply module is dynamically allocated to achieve efficient use of renewable energy such as solar energy and ensure the power supply stability and endurance of the driving recorder.

[0023] The method of this embodiment specifically includes: like Figure 2 As shown, light intensity data is collected periodically, and the photovoltaic output power value is calculated based on the light intensity data; Specifically, by periodically collecting ambient light intensity data and using relevant algorithms or models, the output power value that a solar module (such as a photovoltaic panel) can generate under current lighting conditions can be calculated; this value reflects the power generation capacity of the solar module under current lighting conditions.

[0024] The required power value is calculated according to the demand of the driving recorder; Specifically, a dash cam has a certain power requirement when working. This required power value may vary depending on the model of the dash cam, the working status (such as the quality of the recorded video, whether other functions are turned on, etc.), and environmental factors (such as temperature, etc.). The required power value of the current dash cam can be obtained through relevant calculations or table records.

[0025] Allocate the power supply ratio of the energy storage module, solar module and vehicle power supply module according to the photovoltaic output power value and the required power value, and generate control instructions; Specifically, after obtaining the photovoltaic output power value and the required power value of the driving recorder, the two values ​​will be used to decide how to allocate the power supply ratio of the energy storage module, solar module and on-board power supply module; this allocation process ensures that while meeting the power requirements of the driving recorder, renewable energy (such as solar energy) is utilized as much as possible and the use of the energy storage module is optimized; after the allocation is completed, the corresponding control instructions will be generated.

[0026] The energy storage module, solar module and vehicle-mounted power supply module are controlled according to control instructions to supply power to the driving recorder.

[0027] Specifically, the working status of each power supply module is controlled according to the generated control instructions; for example, if the control instructions instruct the solar module and the energy storage module to supply power together, the output power of the two modules will be adjusted accordingly to ensure that the driving recorder can work normally; if the vehicle-mounted power supply module is also selected as the power supply source, the output power of the vehicle-mounted power supply module will be controlled at the same time.

[0028] Specifically, by periodically collecting light intensity data and calculating and allocating the power supply ratio of each power supply module based on this data and the needs of the driving recorder, intelligent management of the power supply of the driving recorder is achieved. This method not only improves the reliability and stability of the power supply, but also optimizes the efficiency of energy use.

[0029] Furthermore, if Figure 2 As shown, the power supply ratio of the energy storage module, the solar module and the vehicle power supply module is allocated according to the photovoltaic output power value and the required power value, and the control instructions generated include: Determine the magnitude of the photovoltaic output power value and a preset first threshold value; Specifically, the first threshold is a value used to determine whether there is light. When there is no light, interfering light intensity data may be collected to calculate a minimum photovoltaic output power value. If the first threshold is set to 0, an error will occur; therefore, a smaller first threshold needs to be set to eliminate interference; when the photovoltaic output power value is less than the first threshold, it is considered that the current lighting conditions are insufficient and the solar module cannot effectively supply power.

[0030] When the photovoltaic output power value is less than the first threshold, obtaining the output power of the vehicle power supply module; Determine whether the output power of the vehicle power supply module is 0; If so, the energy storage module is used to supply power independently according to the required power value, and a first instruction is generated.

[0031] Specifically, after confirming that the photovoltaic output power value is less than the first threshold, the output power of the on-board power supply module will be checked; if the output power of the on-board power supply module is not 0, it means that the vehicle is in the starting state and the on-board power supply module can work normally and provide power.

[0032] Further, determining whether the output power of the vehicle power supply module is 0 includes: If the output power of the vehicle power supply module is not 0, the power value of the energy storage module is collected, and it is determined whether the power value is greater than a preset second threshold; If yes, then according to the required power value, the energy storage module and the vehicle power supply module are used for power supply, and a second instruction is generated; If not, based on the required power value, the on-board power supply module is used to supply power alone and charge the energy storage module, and a third instruction is generated.

[0033] Specifically, if the output power of the on-board power supply module is not 0, the current power value of the energy storage module will be collected; the second threshold is a larger threshold, which is a critical value for judging whether the energy storage module has sufficient power; it is usually set based on the capacity and design requirements of the energy storage module; if the power value of the energy storage module is greater than the second threshold, it is considered that the energy storage module has sufficient power to participate in power supply; if the power value is not greater than the second threshold, it is considered that the energy storage module has a low power and needs to be charged first.

[0034] Further, according to the required power value, the energy storage module and the vehicle-mounted power supply module are used to supply power, and the second instruction is generated, including: Calculate the ratio of the power value of the energy storage module to the capacity value of the energy storage module to obtain a power ratio; The power supply ratio of the energy storage module and the vehicle power supply module is calculated using the power ratio to obtain a first ratio value. ,have: ; In the formula, is the power ratio; The power supply ratio of the energy storage module and the vehicle power supply module is allocated according to the first ratio value to generate a second instruction.

[0035] Specifically, when the power value of the energy storage module is greater than the second threshold, the ratio of the power value of the energy storage module to the capacity value of the energy storage module (power ratio) is calculated; the power ratio of the energy storage module to the vehicle power supply module is calculated using the power ratio (first ratio value); the calculation formula is: ,in The formula is a power ratio, which aims to dynamically adjust the power supply ratio according to the power situation of the energy storage module to optimize energy use. According to the calculated power supply ratio, the corresponding control instruction (second instruction) is generated, requiring the energy storage module and the on-board power supply module to supply power according to the specified ratio.

[0036] For example, it is assumed that the required power of the driving recorder is 200W, the preset first threshold is 10W (used to exclude interference data under no light or very weak light), and the preset second threshold is 40% of the capacity of the energy storage module; the photovoltaic output power is detected to be 5W (less than the first threshold 10W), and it is considered that the current lighting conditions are insufficient and the solar module cannot effectively supply power; the output power of the on-board power supply module is detected to be 300W (not 0), and it is considered that the vehicle is in the starting state and the on-board power supply module can work normally; then the power value of the energy storage module is collected to be 50% of the capacity of the energy storage module (greater than the second threshold 40%), and it is considered that the energy storage module has sufficient power to participate in the power supply, and the power ratio is calculated to be 0.5, and then the power supply ratio, that is, the first ratio value, is calculated according to the formula , that is, the energy storage module and the on-board power supply module each bear half of the power supply task; therefore, a second instruction is generated, requiring the energy storage module to supply power at a power of 100W (200W*0.5) and the on-board power supply module to also supply power at a power of 100W.

[0037] Further, determining whether the photovoltaic output power value is greater than a preset first threshold value includes: When the photovoltaic output power value is greater than the first threshold, it is determined whether the photovoltaic output power value is greater than the required power value; Specifically, when the photovoltaic output power value is greater than a preset first threshold, it is considered that the current lighting conditions are good and the solar module can effectively supply power; next, it will be further judged whether the photovoltaic output power value is greater than the required power value to determine whether it is necessary to use all or part of the output of the solar module to meet the demand, and consider whether to charge the energy storage module.

[0038] If so, based on the required power value, the solar module is used to supply power alone and charge the energy storage module, and a fourth instruction is generated.

[0039] Specifically, first, the photovoltaic output power value will be compared with the preset first threshold value. If the photovoltaic output power value is greater than the first threshold value, it is considered that there is enough sunlight to generate electricity at present; next, it will be judged whether the photovoltaic output power value is greater than the required power value, which is to determine whether the power generated by the solar module is sufficient to meet the current demand and there is a surplus for charging the energy storage module; if the photovoltaic output power value is greater than the required power value, then the solar module will be used to supply power alone according to the size of the required power value. At this time, since the generated power is more than the demand, the excess power will be used to charge the energy storage module; a fourth instruction will be generated, which will instruct the solar module to supply power with an appropriate power output and simultaneously start the charging process of the energy storage module.

[0040] Exemplarily, it is assumed that the required power of the driving recorder is 150W, the preset first threshold is 5W, and the current photovoltaic output power is 200W; it is detected that the photovoltaic output power is 200W, which is greater than the first threshold 5W, so it is considered that the current lighting conditions are good and the solar module can effectively supply power; further compare the photovoltaic output power of 200W with the required power of 150W, and find that the photovoltaic output power is greater than the required power; according to the comparison result, it is decided to use the solar module alone to supply power to meet the 150W demand of the driving recorder; at the same time, since 50W of the generated 200W of electricity is redundant, this part of the electricity will be used to charge the energy storage module; generate a fourth instruction, instructing the solar module to supply power to the driving recorder with a power output of 150W, and at the same time start the charging process of the energy storage module, the charging power is 50W (or adjusted according to the actual charging efficiency and the state of the energy storage module); through such a logical design, solar energy resources can be efficiently utilized, which not only meets the current power demand, but also can charge the energy storage module for emergency use.

[0041] Further, judging whether the photovoltaic output power value is greater than the required power value includes: When the photovoltaic output power value is less than or equal to the required power value, it is determined whether the output power of the vehicle power supply module is 0; If yes, then according to the required power value, the solar module and the energy storage module are used for power supply, and a fifth instruction is generated; If not, the solar module and the vehicle-mounted power supply module are used for power supply according to the required power value, and a sixth instruction is generated.

[0042] Specifically, when the photovoltaic output power value is less than or equal to the required power value, it indicates that the electricity generated by the solar module is not enough to fully meet the current demand; at this time, it is necessary to further determine whether the output power of the on-board power supply module is 0 to determine whether the on-board power supply module can be used as a supplementary power source; first, the photovoltaic output power value is compared with the required power value; if the photovoltaic output power value is less than or equal to the required power value, it is considered that the current electricity generated by the solar module is insufficient to meet the demand; next, it is determined whether the output power of the on-board power supply module is 0, in order to determine whether the on-board power supply module can be used as a backup power supply; if the output power of the on-board power supply module is 0, it means that the vehicle is in an off state and the on-board power supply module is currently unable to provide power. electricity; at this time, the solar module and the energy storage module will be used to supply power according to the size of the required power value; the energy storage module will release the stored power to supplement the insufficient part of the solar module output; at this time, the fifth instruction will be generated, instructing the solar module and the energy storage module to supply power with appropriate power output; if the output power of the on-board power supply module is not 0, it means that the vehicle is in the starting state, and the on-board power supply module can be used as a backup power supply; at this time, the solar module and the on-board power supply module will be used to supply power according to the size of the required power value; the two share the power demand to extend the service life of the solar module as much as possible and reduce the number of discharges of the energy storage module; at this time, the sixth instruction will be generated, instructing the solar module and the on-board power supply module to supply power with appropriate power output.

[0043] Furthermore, according to the required power value, the solar module and the energy storage module are used to supply power, and the fifth instruction is generated, including: Calculate the difference between the required power value and the photovoltaic output power value; According to the difference, the power supply ratio of the energy storage module and the solar module is calculated to obtain a second ratio value. ,have: ; In the formula, is the required power value, is the photovoltaic output power value; The power supply ratio of the solar module and the energy storage module is allocated according to the second ratio value to generate a fifth instruction.

[0044] Specifically, when the photovoltaic output power value is less than or equal to the required power value, and the on-board power supply module cannot provide power (output power is 0), the solar module and the energy storage module are needed to meet the current power demand. At this time, the power supply ratio of the energy storage module and the solar module will be calculated based on the difference between the required power and the photovoltaic output power. First, calculate the required power value ( ) and photovoltaic output power value ( ), which represents how much electricity is needed to meet the current demand after the solar module outputs electricity; next, the power supply ratio of the energy storage module and the solar module is calculated based on this difference; according to the calculated second ratio value ( ), the power supply ratio of the solar module and the energy storage module can be determined; the solar module will continue to output power at the current ( ) for power supply, while the energy storage module needs to be based on to adjust its output power to meet the remaining power demand; finally, a fifth instruction is generated according to the above calculation results, which instructs the solar module and the energy storage module to supply power with appropriate power output to meet the current power demand; Further, according to the required power value, using the solar module and the vehicle-mounted power supply module to supply power includes: Collecting the power value of the energy storage module, and determining whether the power value of the energy storage module is greater than a preset third threshold; If yes, the power supply ratio of the vehicle power supply module and the solar module is allocated according to the second ratio value; If not, the power supply ratio of the vehicle power supply module and the solar module is calculated using the power ratio, the photovoltaic output power value and the required power value to obtain a third ratio value. ,have: ; In the formula, is the required power value, is the photovoltaic output power value, is the current power ratio; The power supply ratio of the on-board power supply module and the solar module is allocated according to the third ratio value, and the energy storage module is charged.

[0045] Specifically, when it is necessary to use the solar module and the on-board power supply module for power supply, the power value of the energy storage module will be collected first, and compared with the preset third threshold value based on the power value. This third threshold value is usually set according to the capacity of the energy storage module, the discharge depth limit and the protection strategy for the energy storage module; the current power value of the energy storage module (such as a battery) is collected through sensors or other means; the collected power value is compared with the preset third threshold value. If the power value is greater than the third threshold, it means that the energy storage module has sufficient power to cope with possible discharge needs. At this time, the power supply ratio of the on-board power supply module and the solar module can be allocated more flexibly; if the energy storage module has sufficient power, the power supply ratio of the on-board power supply module and the solar module can be allocated according to the second ratio value calculated previously (based on the difference between the required power and the photovoltaic output power); if the energy storage module is insufficient (that is, the power value is not greater than the third threshold), the power supply ratio needs to be allocated more cautiously; at this time, the power ratio (the ratio of the current power of the energy storage module to the full power), the photovoltaic output power value and the required power will be used to allocate the power supply ratio. The third ratio value is calculated based on the power supply ratio calculated (whether based on the second ratio value or the value adjusted by the third ratio value), a corresponding instruction is generated to instruct the on-board power supply module and the solar module to supply power with appropriate power output; at the same time, if the power level of the energy storage module is low, the energy storage module will be charged as much as possible to restore its power level under the premise of meeting the required power value; this is usually achieved by adjusting the power supply ratio of the on-board power supply module and the solar module to ensure that sufficient charging current is provided for the energy storage module while meeting the current demand; at this time, the power used for charging in the photovoltaic output power is .

[0046] For example, assuming that the required power of the driving recorder is 200W, the current photovoltaic output power is 150W, the power ratio of the energy storage module is 0.7 (that is, the current power is 70% of the full power), and the preset third threshold is 0.8; the power ratio of the energy storage module is collected to be 0.7, and it is judged that the power ratio of the energy storage module is not greater than the preset third threshold of 0.8, so the third ratio value is calculated. Therefore, the photovoltaic output power is required to be 105W, and the output power of the on-board power supply module is 95. At this time, the power used for charging in the photovoltaic output power is 150-105=45W, so the energy storage module is charged with a power of 45W.

[0047] Furthermore, the method further comprises: Monitor the power value of the energy storage module in real time, and judge the difference between the power value of the energy storage module and a preset fourth threshold; Specifically, real-time monitoring of the power status of the energy storage module is further added, and a backup energy storage module is introduced. This is to ensure that when the main energy storage module is low on power, it can quickly switch to the backup energy storage module to ensure the continuous and stable operation of the equipment; through sensors or other monitoring means, the power value of the main energy storage module is collected in real time and monitored.

[0048] When the power value of the energy storage module is less than the fourth threshold, switching to the preset backup energy storage module for power supply; Specifically, the power value of the main energy storage module collected in real time is compared with a preset fourth threshold value. This fourth threshold value is usually lower than the third threshold value and is a more urgent power warning line. When the power value of the main energy storage module is lower than this threshold value, it means that the power of the main energy storage module is seriously insufficient and immediate measures need to be taken. When the power value of the main energy storage module is lower than the fourth threshold value, it is immediately switched to the preset backup energy storage module for power supply. This backup energy storage module is usually charged through the on-board power supply module when the power of the main energy storage module is sufficient to maintain a certain power reserve.

[0049] Monitor the power value of the backup energy storage module in real time and determine whether the power value of the backup energy storage module is 100%; If not, when the output power of the on-board power supply module is greater than 0, the on-board power supply module charges the backup energy storage module.

[0050] Specifically, after switching to the backup energy storage module, it is also necessary to monitor its power value in real time to ensure that it can continue to supply power to the equipment; determine whether the power value of the backup energy storage module has reached a full charge state (i.e., 100%); if the backup energy storage module is not fully charged, it means that it still has charging space and can be charged at an appropriate time; when the output power of the on-board power supply module is greater than 0 (i.e., the vehicle is in operation and the on-board power supply module can generate electricity), this part of the power can be used to charge the backup energy storage module; in this way, during the driving of the vehicle, the backup energy storage module can gradually return to a full charge state in case of emergency; only the backup energy storage module is charged using this method.

[0051] Based on the same inventive concept, Figure 3 As shown, the present invention also provides a power supply management system for a driving recorder, the system comprising: The light analysis module is used to periodically collect light intensity data and calculate the photovoltaic output power value based on the light intensity data; A rated power calculation module is used to calculate the required power value according to the demand of the driving recorder; A power distribution module is used to distribute the power supply ratio of the energy storage module, the solar module and the vehicle power supply module according to the photovoltaic output power value and the required power value, and generate control instructions; The power supply control module is used to control the energy storage module, the solar module and the vehicle-mounted power supply module to supply power to the driving recorder according to the control instructions.

[0052] It should be noted that the electrical connection between the above-mentioned units does not necessarily mean direct connection of the lines, and the indirect connection mode can be applied to the embodiments of the present invention as long as the purpose of the present invention is achieved. The above is only an exemplary embodiment of the present invention and cannot be used to limit the scope of the present invention.

[0053] That is, any equivalent changes and modifications made according to the teachings of the present invention are still within the scope of the present invention. After considering the disclosure of the specification and practice, those skilled in the art will easily think of other embodiments of the present invention. This application is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not described in the present invention.

Claims

1. A power supply management method for a driving recorder, characterized in that: The method comprises: Periodically collecting light intensity data, and calculating a photovoltaic output power value based on the light intensity data; The required power value is calculated according to the demand of the driving recorder; Allocate the power supply ratio of the energy storage module, the solar module and the vehicle power supply module according to the photovoltaic output power value and the required power value, and generate a control instruction; The energy storage module, the solar module and the vehicle-mounted power supply module are controlled according to the control instruction to supply power to the driving recorder.

2. The power supply management method for a driving recorder according to claim 1, characterized in that: The generating of the control instruction by allocating the power supply ratio of the energy storage module, the solar module and the vehicle power supply module according to the photovoltaic output power value and the required power value comprises: Determining the magnitude of the photovoltaic output power value and a preset first threshold value; When the photovoltaic output power value is less than the first threshold, obtaining the output power of the vehicle power supply module; Determine whether the output power of the vehicle power supply module is 0; If so, the energy storage module is used to supply power alone according to the required power value, and a first instruction is generated.

3. The power supply management method for a driving recorder according to claim 2, characterized in that: The determining whether the output power of the vehicle power supply module is 0 includes: If the output power of the vehicle power supply module is not 0, the power value of the energy storage module is collected, and it is determined whether the power value is greater than a preset second threshold; If yes, then according to the required power value, the energy storage module and the vehicle-mounted power supply module are used for power supply, and a second instruction is generated; If not, based on the required power value, the vehicle-mounted power supply module is used to supply power alone and charge the energy storage module, and a third instruction is generated.

4. The power supply management method for a driving recorder according to claim 3, characterized in that: The step of supplying power by using the energy storage module and the vehicle-mounted power supply module according to the required power value and generating a second instruction includes: Calculating the ratio of the power value of the energy storage module to the capacity value of the energy storage module to obtain a power ratio; The power supply ratio of the energy storage module to the vehicle power supply module is calculated using the power ratio to obtain a first ratio value. ,have: ; In the formula, is the power ratio; The power supply ratio of the energy storage module and the vehicle-mounted power supply module is allocated according to the first ratio value to generate a second instruction.

5. The power supply management method for a driving recorder according to claim 2, characterized in that: The determining of the difference between the photovoltaic output power value and a preset first threshold value includes: When the photovoltaic output power value is greater than the first threshold, determining whether the photovoltaic output power value is greater than the required power value; If so, based on the required power value, the solar module is used to supply power alone and charge the energy storage module, and a fourth instruction is generated.

6. The power supply management method for a driving recorder according to claim 5, characterized in that: The determining whether the photovoltaic output power value is greater than the required power value comprises: When the photovoltaic output power value is less than or equal to the required power value, it is determined whether the output power of the vehicle power supply module is 0; If yes, then according to the required power value, the solar module and the energy storage module are used to supply power, and a fifth instruction is generated; If not, the solar module and the vehicle-mounted power supply module are used to supply power according to the required power value, and a sixth instruction is generated.

7. The power supply management method for a driving recorder according to claim 6, characterized in that: The step of using the solar module and the energy storage module to supply power according to the required power value and generating a fifth instruction includes: Calculating the difference between the required power value and the photovoltaic output power value; According to the size of the difference, the power supply ratio of the energy storage module to the solar module is calculated to obtain a second ratio value. ,have: ; In the formula, is the required power value, is the photovoltaic output power value; The power supply ratio of the solar module and the energy storage module is allocated according to the second ratio value to generate a fifth instruction.

8. The power supply management method for a driving recorder according to claim 7, characterized in that: The step of supplying power by using the solar module and the vehicle-mounted power supply module according to the required power value includes: Collecting the power value of the energy storage module, and determining whether the power value of the energy storage module is greater than a preset third threshold; If yes, allocating the power supply ratio of the vehicle power supply module and the solar module according to the second ratio value; If not, the power supply ratio of the vehicle power supply module and the solar module is calculated using the power ratio, the photovoltaic output power value and the required power value to obtain a third ratio value. ,have: ; In the formula, is the required power value, is the photovoltaic output power value, is the current power ratio; The power supply ratio of the vehicle-mounted power supply module and the solar module is allocated according to the third ratio value, and the energy storage module is charged.

9. The power supply management method for a driving recorder according to claim 8, characterized in that: The method further comprises: Monitor the power value of the energy storage module in real time, and judge the difference between the power value of the energy storage module and a preset fourth threshold value; When the power value of the energy storage module is less than the fourth threshold, switching to a preset backup energy storage module for power supply; Monitor the power value of the backup energy storage module in real time, and determine whether the power value of the backup energy storage module is 100%; If not, when the output power of the on-board power supply module is greater than 0, the on-board power supply module charges the backup energy storage module.

10. A power supply management system for a driving recorder, used to implement the power supply management method for a driving recorder as claimed in any one of claims 1 to 9, characterized in that: The system comprises: A light analysis module, used to periodically collect light intensity data and calculate the photovoltaic output power value based on the light intensity data; A rated power calculation module is used to calculate the required power value according to the demand of the driving recorder; A power distribution module, used to distribute the power supply ratio of the energy storage module, the solar module and the vehicle power supply module according to the photovoltaic output power value and the required power value, and generate a control instruction; The power supply control module is used to control the energy storage module, the solar module and the vehicle-mounted power supply module to supply power to the driving recorder according to the control instruction.

Images