A display method, device, and vehicle-mounted unit for an in-vehicle unit.

Abstract

This application relates to the field of ETC (Electronic Toll Collection) technology and provides a display method, device, and vehicle-mounted unit for an on-board unit. The method includes: acquiring the operating voltage of the vehicle-mounted unit in real time; when the operating voltage is detected to be within a first preset range, acquiring and storing data to be displayed at preset time intervals to a power-off display unit; when the operating voltage is detected to be lower than the minimum value of the first preset range, determining that the power-off display unit's operating mode enters a low-power mode, and controlling the power-off display unit to display the first target display data from the data to be displayed. This application, by monitoring the operating voltage in real time, acquiring and storing the data to be displayed when the operating voltage is within a preset voltage range, and promptly displaying the first target display data from the pre-stored data to be displayed when the operating voltage is detected to be in a low-power mode, continues to display information in low-power mode, ensuring that users can promptly obtain the operating status.

Description

Technical Field

[0001] This application belongs to the technical field of ETC system, and particularly relates to a display method, device and vehicle unit of an on-board unit. Background Technology

[0002] With the widespread application of ETC (Electronic Toll Collection), vehicles equipped with on-board units can automatically complete the toll collection process without stopping when traveling on various roads such as highways, bridges, and tunnels, through communication with roadside units, saving manpower and physical resources and improving toll collection efficiency.

[0003] However, in the existing technology, due to power supply limitations, the screen of the vehicle unit cannot display information for a long time during use; when the vehicle unit has low power, it cannot continue to display information in order to ensure the power supply for basic transaction functions; and when the vehicle unit suddenly loses power, the user cannot obtain the working status information before the power outage. Summary of the Invention

[0004] This application provides a display method, device, and vehicle-mounted unit for an on-board unit, which can solve the problem of toll collection failure caused by the inability of existing on-board units to display information normally in related ETC systems.

[0005] In a first aspect, embodiments of this application provide a display method for an in-vehicle unit, which is applied to an in-vehicle unit, the in-vehicle unit including a power-off display unit;

[0006] The display method of the vehicle-mounted unit includes:

[0007] The operating voltage of the vehicle-mounted unit is acquired in real time.

[0008] When the operating voltage is detected to be within a first preset range, the data to be displayed is acquired once every preset time interval and stored in the power-off display unit;

[0009] When the operating voltage is detected to be lower than the minimum value of the first preset range, it is determined that the power-off display unit has entered the low power mode, and the power-off display unit is controlled to display the first target display data in the data to be displayed.

[0010] In one embodiment, the step of determining that the power-off display unit enters a low-power mode when the operating voltage is detected to be lower than the minimum value of a first preset range, and controlling the power-off display unit to display the first target display data from the data to be displayed, includes:

[0011] When the operating voltage is detected to be lower than the preset operating voltage, it is determined that the power-off display unit enters a low-power mode.

[0012] The system determines the first target display data from the data to be displayed and controls the power-off display unit to display the first target display data; wherein the first target display data is the data to be displayed whose storage time is closest to the time interval between entering the low power mode.

[0013] In one embodiment, after acquiring the operating voltage of the vehicle-mounted unit in real time, the method further includes:

[0014] When the operating voltage is detected to be within a first preset range, the power-off display unit is determined to operate in a powered-on mode.

[0015] When the operating mode is detected to be a powered operating mode, the operating status of the vehicle unit is determined, and the power-off display unit is controlled to display the second target display data corresponding to the operating status.

[0016] In one embodiment, the data to be displayed further includes the second target display data.

[0017] After determining that the power-off display unit has entered a low-power mode, the method further includes:

[0018] The power-off control unit can simultaneously display the first target display data and the second target display data.

[0019] In one embodiment, when the operating mode is detected to be a powered operating mode, determining the operating state of the vehicle-mounted unit and controlling the power-off display unit to display second target display data corresponding to the operating state includes:

[0020] When the vehicle unit is detected to be powered on for the first time, the working state is determined to be the quality inspection test state, and the second target display data is the quality inspection test state data;

[0021] When the quality inspection completion flag is detected, it is determined that the working state has entered the waiting state, and the second target display data is the waiting state data;

[0022] When the activation program completion flag is detected, it is determined that the working state has entered the activated state, and the second target display data is the activated state data.

[0023] In one embodiment, the step of determining the operating state of the vehicle-mounted unit and controlling the power-off display unit to display second target display data corresponding to the operating state when the operating mode is detected to be a powered operating mode further includes:

[0024] When the working state is detected to be activated, a fault detection program is executed to obtain the fault detection result;

[0025] When the fault detection result is a fault state, the second target displays fault state data;

[0026] When the fault state is cleared, the working state switches to the activated state, and the second target display data is the activated state data.

[0027] In one embodiment, the step of determining the operating state of the vehicle-mounted unit and controlling the power-off display unit to display second target display data corresponding to the operating state when the operating mode is detected to be a powered operating mode further includes:

[0028] When the working state is activated, a debugging instruction is received, and the working state is updated to the engineering debugging state, and the second target display data is the engineering debugging state data.

[0029] In one embodiment, the step of determining the operating state of the vehicle-mounted unit and controlling the power-off display unit to display second target display data corresponding to the operating state when the operating mode is detected to be a powered operating mode further includes:

[0030] When the working state is the engineering debugging state, upon detecting the completion of the engineering debugging program and receiving an instruction to exit the engineering debugging state, the working state is updated to the activated state, and the second target display data is the activated state data.

[0031] In one embodiment, the method further includes:

[0032] When the vehicle-mounted unit loses power, the power-off display unit displays the data that was displayed before the power outage.

[0033] This embodiment installs a low-power, non-refreshing, and power-off-enabled display unit in the vehicle-mounted unit, and monitors the operating voltage in real time. When the operating voltage is detected to be within a first preset range, the data to be displayed is acquired and stored in the power-off-enabled display unit at preset time intervals. When the operating voltage is detected to be lower than the minimum value of the first preset range, the power-off-enabled display unit is determined to enter a low-power mode, and the unit is controlled to display the first target display data from the data to be displayed. In other words, by monitoring the operating voltage in real time, the system acquires and stores the data to be displayed when the operating voltage is within a preset voltage range, and promptly displays the first target display data from the pre-stored data to be displayed when the operating voltage is detected to be in a low-power mode, thus continuing to display information even in low-power mode.

[0034] Secondly, embodiments of this application provide a display device for an in-vehicle unit, which is applied to an in-vehicle unit, the in-vehicle unit including a display unit that can be displayed when the power is off;

[0035] The display device of the vehicle-mounted unit includes:

[0036] A voltage acquisition module is used to acquire the operating voltage of the vehicle-mounted unit in real time;

[0037] The data acquisition module is used to acquire the data to be displayed once every preset time interval and store it in the power-off display unit when the working voltage is detected to be within a first preset range.

[0038] The first data display module is used to determine that the power-off display unit has entered a low-power mode when the operating voltage is detected to be lower than the minimum value of the first preset range, and to control the power-off display unit to display the first target display data in the data to be displayed.

[0039] In one embodiment, the first data display module includes:

[0040] The first mode determination unit is used to determine that the power-off display unit enters a low-power mode when the operating voltage is detected to be less than the preset operating voltage.

[0041] The first data display unit is used to determine the first target display data in the data to be displayed, and control the power-off display unit to display the first target display data; wherein, the first target display data is the data to be displayed whose storage time is closest to the time interval between entering the low power mode.

[0042] In one embodiment, the apparatus further includes:

[0043] The first mode determination module is used to determine that the power-off display unit is in a powered-on working mode when the working voltage is detected to be within a first preset range.

[0044] The second data display module is used to determine the working status of the vehicle unit when the working mode is detected to be a powered working mode, and to control the power-off display unit to display the second target display data corresponding to the working status.

[0045] In one embodiment, the data to be displayed further includes the second target display data, and the first data display module further includes:

[0046] The second data display module unit is used to control the power-off display unit to simultaneously display the first target display data and the second target display data when the working mode enters the low power mode.

[0047] In one embodiment, the second data display module includes:

[0048] The power-on monitoring unit is used to determine the working state as a quality inspection test state when the vehicle unit is detected to be powered on for the first time, and the second target display data is the quality inspection test state data;

[0049] The first state determination unit is used to determine that the working state enters the waiting state when the quality inspection completion flag is detected, and the second target display data is the waiting state data.

[0050] The second state determination unit is used to determine that the working state has entered the activated state when the activation program completion flag is detected, and the second target display data is the activated state data.

[0051] In one embodiment, the second data display module further includes:

[0052] The self-test unit is used to execute a fault detection program to obtain a fault detection result when the working state is detected as an activated state.

[0053] The third state determination unit is used to display the second target data as fault state data when the fault detection result is a fault state.

[0054] The third data display unit is used to switch the working state to the activated state when the fault state is cleared, and the second target display data is the activated state data.

[0055] In one embodiment, the second data display module further includes:

[0056] The first instruction receiving unit is configured to receive a debugging instruction when the working state is activated, update the working state to engineering debugging state, and the second target display data is engineering debugging state data.

[0057] In one embodiment, the second data display module further includes:

[0058] The second instruction receiving unit is used to update the working state to the activated state when the working state is the engineering debugging state, and when the completion of the engineering debugging program is detected and an instruction to exit the engineering debugging state is received, and the second target display data is the activated state data.

[0059] In one embodiment, the apparatus further includes:

[0060] A power failure display module is used to display the data before the power failure when the vehicle unit loses power.

[0061] Thirdly, embodiments of this application provide a vehicle-mounted unit, including a power-off display unit, a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the display method of the vehicle-mounted unit as described in any of the first aspects above.

[0062] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the display method of the vehicle-mounted unit as described in any of the first aspects above.

[0063] Fifthly, embodiments of this application provide a computer program product that, when run on a terminal device, causes the terminal device to execute the display method of the vehicle-mounted unit described in any of the first aspects.

[0064] It is understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0065] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 This is a flowchart illustrating the display method of the vehicle-mounted unit provided in an embodiment of this application;

[0067] Figure 2 This is a flowchart illustrating step S103 of the display method for the vehicle-mounted unit provided in this application embodiment;

[0068] Figure 3 This is another schematic flowchart of the display method for the vehicle-mounted unit provided in the embodiments of this application;

[0069] Figure 4 This is a schematic diagram of the structure of the display device of the vehicle-mounted unit provided in the embodiments of this application;

[0070] Figure 5 This is a schematic diagram of the structure of the vehicle-mounted unit provided in the embodiments of this application. Detailed Implementation

[0071] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0072] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0073] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0074] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0075] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0076] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0077] The display method for the vehicle-mounted unit provided in this application can be applied to terminal devices such as vehicle-mounted units (OBUs) equipped with power-off display units. This application does not limit the specific type of terminal device. The power-off display unit can be an e-ink screen, some new LCD displays, etc., as in the prior art, and this application does not specifically limit it.

[0078] Figure 1 A schematic flowchart of the display method of the vehicle-mounted unit provided in this application is shown. It is an example and not a limitation. The method can be applied to the above-mentioned vehicle-mounted unit.

[0079] S101. Obtain the operating voltage of the vehicle-mounted unit in real time.

[0080] Specifically, after the vehicle unit is started, the vehicle unit needs to monitor its own operating voltage in real time to determine whether the vehicle unit is in a powered operating mode at the current moment.

[0081] S102. When the operating voltage is detected to be within the first preset range, the data to be displayed is acquired once every preset time interval and stored in the power-off display unit.

[0082] Specifically, when the operating voltage of the vehicle-mounted unit is detected to be within a first preset range, it is determined that the vehicle-mounted unit is currently in a powered operating mode. Data to be displayed is acquired and stored in the power-off display unit at preset intervals, and the storage time for storing this data is determined. The power-off display unit is specifically a low-power display unit that supports power-off display. It consists of a main body, a flash memory chip, and a screen driver, and includes a power management module, a communication module, and a character library unit supporting different display content. The communication module communicates with the control unit of the vehicle-mounted unit to respond based on the operating voltage of the vehicle-mounted unit, thereby achieving the low-power display function. The data to be displayed specifically includes all the status data that the power-off display unit can display in low-power mode. The first preset range is a pre-set normal operating voltage range, for example, 3-5V.

[0083] For example, the data to be displayed includes, but is not limited to, device information of the vehicle unit, product model, manufacturer's brand logo, after-sales service phone number, date, current power status (e.g., low battery), fault codes, a list of common problems within the vehicle unit, and the three most recent transactions. Correspondingly, all of the above data needs to be acquired in real time when the operating voltage is detected to be within a first preset range.

[0084] The preset duration can be set according to actual needs. For example, if the preset duration is set to 60 seconds, the vehicle unit needs to acquire the data to be displayed every 60 seconds and store it in the power-off display unit.

[0085] S103. When the operating voltage is detected to be lower than the minimum value of the first preset range, it is determined that the power-off display unit has entered the low power mode, and the power-off display unit is controlled to display the first target display data in the data to be displayed.

[0086] Specifically, when the operating voltage of the vehicle unit is detected to be lower than the minimum value of the first preset range, it is determined that the vehicle unit may be too low due to internal faults or external reasons, that is, the operating mode of the vehicle unit enters the low power mode, the first target display data in the data to be displayed is determined, and the power is cut off so that the display unit can display the above-mentioned first target display data.

[0087] Understandably, because the on-board unit reads the data to be displayed multiple times and stores it in the power-off display unit during the powered-on operation mode, the power-off display unit may contain a large amount of data to be displayed. Therefore, it is necessary to select the first target display data that meets the display requirements. For example, the data whose storage time is closest to the time of entering low-power mode can be selected as the first target display data.

[0088] like Figure 2 As shown, in one embodiment, when the operating voltage is detected to be lower than the minimum value of a first preset range, determining that the power-off display unit's operating mode enters a low-power mode, and controlling the power-off display unit to display the first target display data from the data to be displayed, includes:

[0089] S1031. When the operating voltage is detected to be lower than the preset operating voltage, it is determined that the power-off display unit enters the low power mode.

[0090] S1032. Determine the first target display data in the data to be displayed, and control the power-off display unit to display the first target display data; wherein, the first target display data is the data to be displayed whose storage time is closest to the time interval between entering the low power mode.

[0091] Specifically, when the operating voltage of the vehicle unit is detected to be lower than the preset operating voltage (i.e., the minimum value of the first preset range), it is determined that the current operating mode of the power-off display unit on the vehicle unit has entered a low-power mode, and the low-power display function needs to be activated through the power-off display unit. The storage time of each data to be displayed stored in the power-off display unit is determined, and the data to be displayed with the smallest time difference (or the shortest time interval) between the above storage time and the time of entering the low-power mode is determined as the first target display data, and the power-off display unit is controlled to display the above first target display data.

[0092] For example, if the preset duration is 10 seconds, the storage time of the data to be displayed is detected as 10:00:03, and the time of entering low power mode is 10:00:12, then the data to be stored is the last data to be displayed obtained by the power-off display unit on the vehicle unit before entering low power mode, and the data to be displayed is determined to be the first target display data.

[0093] By monitoring that the operating voltage of the vehicle unit is lower than the preset voltage, it is determined that the power-off display unit on the vehicle unit is in a low-power operating mode. The power-off display unit is then controlled to display the first target display data that has been stored in advance. This enables the display of the pre-stored display data in the powered mode to be displayed in a timely manner when the vehicle unit enters the low-power mode, thus avoiding the problem of display failure due to the low power of the vehicle unit.

[0094] like Figure 3 As shown, in one embodiment, after acquiring the operating voltage of the vehicle-mounted unit in real time, the method further includes:

[0095] S104. When the operating voltage is detected to be within the first preset range, the power-off display unit is determined to be in a powered operating mode.

[0096] S105. When the working mode is detected to be a powered working mode, the working state of the vehicle unit is determined, and the power-off display unit is controlled to display the second target display data corresponding to the working state.

[0097] Specifically, when the operating voltage of the vehicle-mounted unit is detected to be within a first preset range, the operating mode of the power-off display unit is determined to be the powered operating mode. The current operating state of the vehicle-mounted unit is determined, the operating state data corresponding to the operating state is acquired as the second target display data, and the power-off display unit is controlled to display the second target display data corresponding to the above operating state.

[0098] In one embodiment, the data to be displayed further includes the second target display data, and after determining that the power-off display unit has entered a low-power mode, the method further includes:

[0099] The power-off control unit can simultaneously display the first target display data and the second target display data.

[0100] Specifically, the time when the operating voltage of the vehicle unit becomes lower than the preset minimum operating voltage is determined as the time to enter the low power mode; the first target operating state of the vehicle unit in the previous powered mode is determined, and the operating state data corresponding to the first target operating state is determined as the second target display data; the power-off control allows the display unit to simultaneously display the first target display data and the second target display data.

[0101] As an example and not a limitation, the operating states of the vehicle unit include, but are not limited to, pending activation, activated, fault, quality inspection and testing, and engineering debugging.

[0102] When the on-board unit is in low power mode, the power-off control unit can simultaneously display the first target display data corresponding to the low power mode and the second target display data corresponding to the working state in stable voltage mode. This allows the ETC system to obtain information in low power mode as well as important information in power mode, improving the information interaction efficiency of the ETC system.

[0103] In one embodiment, when the operating mode is detected to be a powered operating mode, determining the operating state of the vehicle-mounted unit and controlling the power-off display unit to display second target display data corresponding to the operating state includes:

[0104] When the vehicle unit is detected to be powered on for the first time, the working state is determined to be the quality inspection test state, and the second target display data is the quality inspection test state data;

[0105] When the quality inspection completion flag is detected, it is determined that the working state has entered the waiting state, and the second target display data is the waiting state data;

[0106] When the activation program completion flag is detected, it is determined that the working state has entered the activated state, and the second target display data is the activated state data.

[0107] Generally, upon initial power-on of the vehicle-mounted unit, a quality inspection test is required to ensure its operational capability. Correspondingly, upon detecting that the vehicle-mounted unit is powering on for the first time, the operating state is determined to be the quality inspection test state. The quality inspection test status data is acquired as secondary target display data, which can be displayed on the unit's screen after power is cut off. The quality inspection test status data includes, but is not limited to, current quality inspection information, information that has passed quality inspection, information pending quality inspection (i.e., the quality inspection information to be executed at the next moment), vehicle-mounted unit device information, quality inspection QR code, product batch number, and quality inspection deadline.

[0108] Specifically, upon detecting the quality inspection completion flag, the vehicle-mounted unit needs to be activated to enter normal operating mode, confirming its working status and entering a pending activation state. Simultaneously, it acquires pending activation state data as secondary target display data, which can be displayed on the unit after power is cut off. This pending activation state data includes, but is not limited to, the vehicle-mounted unit's device information, product model, manufacturer's brand logo, after-sales service phone number, date, current power status, activation steps, activation QR code, and the vehicle-mounted unit manufacturer's promotional slogans.

[0109] Specifically, upon detecting the activation program completion flag, the on-board unit's operating state changes from the pending activation state to the activated state. Activated state data is acquired and used as secondary target display data, which can be displayed on the on-board unit upon power failure. This activated state data includes, but is not limited to, the on-board unit's device information, product model, manufacturer's logo, after-sales service phone number, date, current power status, manufacturer's promotional slogan, Bluetooth status, tamper protection status, and invoicing information.

[0110] By monitoring the number of times the user powers on, the status of the quality inspection program, the activation program, and other information in real time, the current working status of the vehicle unit can be determined in a timely manner, and the corresponding working status data can be displayed when the power is off. This enables the correct status data to be displayed in a timely manner when there is power.

[0111] In one embodiment, the step of determining the operating state of the vehicle-mounted unit and controlling the power-off display unit to display second target display data corresponding to the operating state when the operating mode is detected to be a powered operating mode further includes:

[0112] When the working state is detected to be activated, a fault detection program is executed to obtain the fault detection result;

[0113] When the fault detection result is a fault state, the second target displays fault state data;

[0114] When the fault state is cleared, the working state switches to the activated state, and the second target display data is the activated state data.

[0115] Specifically, when the on-board unit is detected to be in an activated state, a fault detection program is executed to obtain the fault detection result of the on-board unit. When the fault detection result is a fault state, fault state data is acquired and used as secondary target display data, which can be displayed on the on-board unit after power failure. The fault state data includes, but is not limited to, the on-board unit's device information, product model, manufacturer's brand logo, after-sales service telephone number, date, current power status (e.g., power failure), and fault code.

[0116] Specifically, when the fault of the vehicle-mounted unit is detected to have been repaired (i.e., when the fault state is resolved), the operating state of the vehicle-mounted unit is switched to the activated state. The activated state data is acquired as the second target display data and displayed on the display unit after power failure.

[0117] The vehicle unit's self-test program determines whether the vehicle is in a faulty state. If a fault occurs, the corresponding fault data can be displayed by powering off the display unit, which can promptly remind users to inspect the vehicle unit, thereby improving the service life of the vehicle unit and the accuracy of the displayed information.

[0118] In one embodiment, the step of determining the operating state of the vehicle-mounted unit and controlling the power-off display unit to display second target display data corresponding to the operating state when the operating mode is detected to be a powered operating mode further includes:

[0119] When the working state is activated, a debugging instruction is received, and the working state is updated to the engineering debugging state, and the second target display data is the engineering debugging state data.

[0120] Specifically, when the working state is activated, if a debugging command is received, the current working state is switched from activated to engineering debugging state, and the engineering debugging program is executed. Engineering debugging status data is acquired as secondary target display data and displayed via a power-off display unit. Engineering debugging status data includes, but is not limited to, order information, equipment information, product production batch, and printed debugging content from the vehicle-mounted unit.

[0121] In one embodiment, the step of determining the operating state of the vehicle-mounted unit and controlling the power-off display unit to display second target display data corresponding to the operating state when the operating mode is detected to be a powered operating mode further includes:

[0122] When the working state is the engineering debugging state, upon detecting the completion of the engineering debugging program and receiving an instruction to exit the engineering debugging state, the working state is updated to the activated state, and the second target display data is the activated state data.

[0123] Specifically, when the working state is the engineering debugging state, upon detecting the completion of the engineering debugging program and receiving an instruction to exit the engineering debugging state, the working state is switched from the engineering debugging state to the activated state, the activated state data is acquired as the second target display data, and displayed by the power-off display unit.

[0124] By promptly updating the corresponding working status through received instructions, timely acquiring status information, and displaying the corresponding working status data through the power-off display unit, the system can display the correct status data in a timely manner when power is available, thereby improving the real-time performance and accuracy of the vehicle-mounted unit's information display function.

[0125] In one embodiment, the method further includes:

[0126] When the vehicle-mounted unit loses power, the power-off display unit displays the data that was displayed before the power outage.

[0127] Specifically, when a power failure is detected in the vehicle unit, the operating mode and corresponding display data of the vehicle unit before entering the power failure state are determined, and the display data before the power failure is displayed through the power failure display unit.

[0128] For example, if the vehicle unit's operating mode before power failure is low-power mode, then in low-power mode, the display unit can display the first target data via power failure. Alternatively, if the vehicle unit's operating mode before power failure is powered and in a pending activation state, then in low-power mode, the display unit can display the pending activation state data via power failure.

[0129] This embodiment installs a low-power, non-refreshing, and power-off-enabled display unit in the vehicle-mounted unit, and monitors the operating voltage in real time. When the operating voltage is detected to be within a first preset range, the data to be displayed is acquired and stored in the power-off-enabled display unit at preset time intervals. When the operating voltage is detected to be lower than the minimum value of the first preset range, the power-off-enabled display unit is determined to enter a low-power mode, and the unit is controlled to display the first target display data from the data to be displayed. In other words, by monitoring the operating voltage in real time, the system acquires and stores the data to be displayed when the operating voltage is within a preset voltage range, and promptly displays the first target display data from the pre-stored data to be displayed when the operating voltage is detected to be in a low-power mode, thus continuing to display information even in low-power mode.

[0130] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0131] Corresponding to the display method of the vehicle-mounted unit described in the above embodiments, Figure 4A structural block diagram of a display device for a vehicle-mounted unit according to an embodiment of this application is shown. The display device is applied to a vehicle-mounted unit, which includes a power-off display unit. For ease of explanation, only the parts relevant to the embodiments of this application are shown.

[0132] Reference Figure 4 The display device 100 of the vehicle-mounted unit includes:

[0133] Voltage acquisition module 101 is used to acquire the operating voltage of the vehicle unit in real time;

[0134] The data acquisition module 102 is used to acquire the data to be displayed once every preset time interval and store it in the power-off display unit when the working voltage is detected to be within a first preset range.

[0135] The first data display module 103 is used to determine that the power-off display unit has entered a low-power mode when the operating voltage is detected to be lower than the minimum value of the first preset range, and to control the power-off display unit to display the first target display data in the data to be displayed.

[0136] In one embodiment, the first data display module includes:

[0137] The first mode determination unit is used to determine that the power-off display unit enters a low-power mode when the operating voltage is detected to be less than the preset operating voltage.

[0138] The first data display unit is used to determine the first target display data in the data to be displayed, and control the power-off display unit to display the first target display data; wherein, the first target display data is the data to be displayed whose storage time is closest to the time interval between entering the low power mode.

[0139] In one embodiment, the apparatus further includes:

[0140] The second mode determination unit is used to determine that the power-off display unit is in a powered-on working mode when the working voltage is detected to be within a first preset range.

[0141] The second data display module is used to determine the working status of the vehicle unit when the working mode is detected to be a powered working mode, and to control the power-off display unit to display the second target display data corresponding to the working status.

[0142] In one embodiment, the data to be displayed further includes the second target display data, and the first data display module further includes:

[0143] The first data display module is used to control the power-off display unit to simultaneously display the first target display data and the second target display data when the working mode enters the low power mode.

[0144] In one embodiment, the second data display module includes:

[0145] The power-on monitoring unit is used to determine the working state as a quality inspection test state when the vehicle unit is detected to be powered on for the first time, and the second target display data is the quality inspection test state data;

[0146] The first state determination unit is used to determine that the working state enters the waiting state when the quality inspection completion flag is detected, and the second target display data is the waiting state data.

[0147] The second state determination unit is used to determine that the working state has entered the activated state when the activation program completion flag is detected, and the second target display data is the activated state data.

[0148] In one embodiment, the second data display module further includes:

[0149] The self-test unit is used to execute a fault detection program to obtain a fault detection result when the working state is detected as an activated state.

[0150] The third state determination unit is used to display the second target data as fault state data when the fault detection result is a fault state.

[0151] The third data display unit is used to switch the working state to the activated state when the fault state is cleared, and the second target display data is the activated state data.

[0152] In one embodiment, the second data display module further includes:

[0153] The first instruction receiving unit is configured to receive a debugging instruction when the working state is activated, update the working state to engineering debugging state, and the second target display data is engineering debugging state data.

[0154] In one embodiment, the second data display module further includes:

[0155] The second instruction receiving unit is used to update the working state to the activated state when the working state is the engineering debugging state, and when the completion of the engineering debugging program is detected and an instruction to exit the engineering debugging state is received, and the second target display data is the activated state data.

[0156] In one embodiment, the apparatus further includes:

[0157] A power failure display module is used to display the data before the power failure when the vehicle unit loses power.

[0158] This embodiment installs a low-power, non-refreshing, and power-off-enabled display unit in the vehicle-mounted unit, and monitors the operating voltage in real time. When the operating voltage is detected to be within a first preset range, the data to be displayed is acquired and stored in the power-off-enabled display unit at preset time intervals. When the operating voltage is detected to be lower than the minimum value of the first preset range, the power-off-enabled display unit is determined to enter a low-power mode, and the unit is controlled to display the first target display data from the data to be displayed. In other words, by monitoring the operating voltage in real time, the system acquires and stores the data to be displayed when the operating voltage is within a preset voltage range, and promptly displays the first target display data from the pre-stored data to be displayed when the operating voltage is detected to be in a low-power mode, thus continuing to display information even in low-power mode.

[0159] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0160] Figure 5 This is a schematic diagram of the structure of the vehicle-mounted unit provided in this embodiment. Figure 5 As shown, the vehicle-mounted unit 5 in this embodiment includes: a power-off display unit 53, and at least one processor 50. Figure 5 (Only one is shown in the image), memory 51, and computer program 52 stored in the memory 51 and executable on the at least one processor 50, wherein the processor 50 executes the computer program 52 to implement the steps in the display method embodiments of any of the above-described vehicle-mounted units.

[0161] The vehicle-mounted unit 5 can be a computing device such as a desktop computer, laptop, handheld computer, or cloud server. This vehicle-mounted unit may include, but is not limited to, a processor 50 and a memory 51. Those skilled in the art will understand that... Figure 5 This is merely an example of vehicle unit 5 and does not constitute a limitation on vehicle unit 5. It may include more or fewer components than shown in the figure, or combine certain components, or different components, such as input / output devices, network access devices, etc.

[0162] The processor 50 may be a Central Processing Unit (CPU), or it may be 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. A general-purpose processor may be a microprocessor or any conventional processor.

[0163] In some embodiments, the memory 51 may be an internal storage unit of the vehicle unit 5, such as a hard disk or memory of the vehicle unit 5. In other embodiments, the memory 51 may be an external storage device of the vehicle unit 5, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the vehicle unit 5. Furthermore, the memory 51 may include both internal and external storage units of the vehicle unit 5. The memory 51 is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory 51 can also be used to temporarily store data that has been output or will be output.

[0164] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0165] This application also provides a network device, which includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor executes the computer program to implement the steps in any of the above method embodiments.

[0166] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps described in the various method embodiments above.

[0167] This application provides a computer program product that, when run on a mobile terminal, enables the mobile terminal to implement the steps described in the above-described method embodiments.

[0168] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0169] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0170] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0171] In the embodiments provided in this application, it should be understood that the disclosed apparatus / network devices and methods can be implemented in other ways. For example, the apparatus / network device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0172] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0173] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A display method of a car navigation system, characterized by, The vehicle-mounted unit comprises a power-off displayable unit; The display method of the vehicle-mounted unit comprises: Real-time acquisition of working voltage of the vehicle-mounted unit; When it is detected that the working voltage is within a first preset range, acquiring every interval preset time length pending display data and storing to the power-off displayable unit; When it is detected that the working voltage is lower than the minimum value of the first preset range, determining that the working mode of the power-off displayable unit enters a low power mode, and controlling the power-off displayable unit to display first target display data in the pending display data, comprising: When it is detected that the working voltage is less than a preset working voltage, determining that the working mode of the power-off displayable unit enters a low power mode; Determining first target display data in the pending display data, and controlling the power-off displayable unit to display the first target display data; wherein the first target display data is the pending display data with the closest time interval between the storage time and the time of entering the low power mode, by determining the storage time of each pending display data stored in the power-off displayable unit, determining the pending display data with the minimum time difference value between the storage time and the time of entering the low power mode as the first target display data, and controlling the power-off displayable unit to display the first target display data.

2. The display method of the car navigation system according to claim 1, wherein After the real-time acquisition of the working voltage of the vehicle-mounted unit, further comprising: When it is detected that the working voltage is within a first preset range, determining that the working mode of the power-off displayable unit is a powered working mode: When it is detected that the working mode is the powered working mode, determining the working state of the vehicle-mounted unit, and controlling the power-off displayable unit to display second target display data corresponding to the working state.

3. The display method of the car navigation system according to claim 2, wherein The pending display data further comprises the second target display data, and after determining that the working mode of the power-off displayable unit enters the low power mode, further comprising: Controlling the power-off displayable unit to simultaneously display the first target display data and the second target display data.

4. The display method of the car navigation system according to claim 2, wherein When it is detected that the working mode is the powered working mode, determining the working state of the vehicle-mounted unit, and controlling the power-off displayable unit to display second target display data corresponding to the working state, comprising: When it is detected that the vehicle-mounted unit is powered on for the first time, determining that the working state is a quality inspection test state, and the second target display data is quality inspection test state data; When a quality inspection completion flag is detected, determining that the working state enters a pending activation state, and the second target display data is pending activation state data; When an activation program completion flag is detected, determining that the working state enters an activated state, and the second target display data is activated state data.

5. The display method of the car navigation system according to claim 2, wherein When it is detected that the working mode is the powered working mode, determining the working state of the vehicle-mounted unit, and controlling the power-off displayable unit to display second target display data corresponding to the working state, further comprising: When it is detected that the working state is the activated state, executing a fault detection program to obtain a fault detection result; When the fault detection result is a fault state, the second target display data is fault state data; When the fault state is removed, the working state is switched to the activated state, and the second target display data is activated state data.

6. The display method of the car navigation system according to claim 2, wherein The method further includes: When the working state is the activated state, a debugging instruction is received, the working state is updated to an engineering debugging state, and the second target display data is engineering debugging state data.

7. The display method of the car navigation system according to claim 2, wherein The method further includes: When the working state is the activated state, a debugging instruction is received, the working state is updated to an engineering debugging state, and the second target display data is engineering debugging state data.

8. The display method of a car navigation system according to any one of claims 1 to 7, wherein The method further includes: When the working state is the activated state, a debugging instruction is received, the working state is updated to an engineering debugging state, and the second target display data is engineering debugging state data.

9. A display device of a car navigation system, characterized by comprising: The method further includes: When the working state is the activated state, a debugging instruction is received, the working state is updated to an engineering debugging state, and the second target display data is engineering debugging state data. The method further includes: When the working state is the activated state, a debugging instruction is received, the working state is updated to an engineering debugging state, and the second target display data is engineering debugging state data. The vehicle-mounted unit includes a display device, and the display device includes: The voltage acquisition module is configured to acquire, in real time, a working voltage of the vehicle-mounted unit. The data acquisition module is configured to acquire, at a preset time interval, to-be-displayed data and store the to-be-displayed data in the power-off displayable unit when the working voltage is detected to be within a first preset range.

10. An in-vehicle unit comprising a power-off displayable unit, a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The first data display module is configured to determine that a working mode of the power-off displayable unit enters a low-power mode when the working voltage is detected to be lower than a minimum value of the first preset range, and control the power-off displayable unit to display first target display data in the to-be-displayed data. 11.A computer readable storage medium, storing a computer program, characterized in that, The first mode determination unit is configured to determine that the working mode of the power-off displayable unit enters the low-power mode when the working voltage is detected to be less than a preset working voltage. The first data display unit is configured to determine the first target display data in the to-be-displayed data and control the power-off displayable unit to display the first target display data. The processor implements the method according to any one of claims 1 to 8 when executing the computer program. The computer program implements the method according to any one of claims 1 to 8 when executed by the processor.

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