Control method of roadside unit device, roadside unit device, and low-power consumption system

Abstract

The application relates to a roadside unit device control method, a roadside unit device and a low-power consumption system, wherein the roadside unit device control method comprises the following steps: if no vehicle is detected to enter a current detection range, based on first vehicle information, whether a target vehicle can reach the current detection range within a mode switching time of the roadside unit device is predicted; and if the target vehicle cannot reach the current detection range within the mode switching time, the roadside unit device is controlled to reduce power consumption and enter a deep sleep mode. The roadside unit device is switched between different power consumption modes based on vehicle information of a front detection range, so that the dependence on a coverage range of the roadside unit device is eliminated while the roadside unit device is reduced in power consumption, and therefore the deployment cost required for reducing the roadside unit device in power consumption can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle-road cooperation, in particular to a control method of a road side unit device, the road side unit device and a low-power consumption system. BACKGROUND

[0002] In recent years, with the development of vehicle-road cooperation technology in urban traffic, high-speed traffic and other fields, based on the intelligent fusion of road side unit device RSU (Road Side Unit) and signal machine, mobile edge computing MEC (Mobile Edge Computing) and vehicle wireless communication technology V2X (vehicle to everything) management platform, vehicles can perceive the surrounding road conditions in advance and make corresponding adjustments, improving driving safety and convenience. For example, through the real-time push function of the red and green light, the driver can obtain the red and green light information of the current intersection from the RSU through the on-board unit OBU (On board Unit) device, and even if there is a large truck blocking the view, there will be no problem of misbreaking the red light. In addition, RSU devices are also widely used on highways, by obtaining the speed, position and other information pushed by vehicles in real time to facilitate intelligent scheduling processing by the V2X platform. At the same time, RSU obtains relevant information from the V2X platform and pushes it to the vehicles passing through the current highway section, providing road guidance and danger warning for vehicles.

[0003] At present, the application of RSU devices on the highway has the problem of high power consumption. For the consumption reduction processing of RSU devices in the highway section, the RSU device is mainly used to cover the entire highway section, which requires ensuring that the vehicles on the highway are within the coverage range of at least one RSU at any time, so the deployment cost of this scheme is high and the construction is difficult.

[0004] Therefore, there is currently no effective solution to the problem of high deployment cost required for RSU device consumption reduction in the related art. SUMMARY

[0005] A control method of a road side unit device, the road side unit device and a low-power consumption system are provided in the present embodiment to solve the problem of high deployment cost required for RSU device consumption reduction in the related art.

[0006] In a first aspect, a control method of a road side unit device is provided in the present embodiment, and the control method comprises:

[0007] In the case where the first vehicle information of the target vehicle located in the preset front detection range of the front road section of the current detection range of the road side unit device is acquired, it is judged whether a vehicle enters the current detection range is detected.

[0008] If no vehicle enters the current detection range, based on the first vehicle information, it is predicted whether the target vehicle can reach the current detection range within a mode switching time of the road side unit device; the mode switching time is a time for the road side unit device to switch from a deep sleep mode to a light sleep mode.

[0009] If the target vehicle cannot reach the current detection range within the mode switching time, the road side unit device is controlled to reduce power consumption and enter the deep sleep mode; wherein the power consumption of the deep sleep mode is lower than that of the light sleep mode.

[0010] In some embodiments, the method further comprises:

[0011] If it is predicted that the target vehicle can reach the current detection range within the mode switching time of the road side unit device, the road side unit device is controlled to enter the light sleep mode.

[0012] In some embodiments, after the road side unit device is controlled to enter the deep sleep mode, the method further comprises:

[0013] Based on the first vehicle information and the mode switching time, a deep sleep time is set;

[0014] In a case where the time for the road side unit device to be in the deep sleep mode reaches the deep sleep time, the road side unit device is controlled to switch from the deep sleep mode to the light sleep mode.

[0015] In some embodiments, the method further comprises:

[0016] Periodically querying, from a server, information of vehicle entry detected by a front device in a preset front detection range; wherein the front device is a road side unit device or an ETC (Electronic Toll Collection) detection device arranged in a front road section of the current detection range;

[0017] In a case where the information of vehicle entry detected by the front device in the preset front detection range is queried from the server, first vehicle information of a target vehicle in the preset front detection range is obtained.

[0018] In some embodiments, the first vehicle information includes vehicle speed and vehicle position; and the prediction, based on the first vehicle information, of whether the target vehicle can reach the current detection range within the mode switching time of the road side unit device comprises:

[0019] calculating, based on the vehicle speed and the vehicle position, an entering time of the target vehicle to reach the current detection range;

[0020] in a case where the entering time is greater than the mode switching time, confirming that the target vehicle cannot reach the current detection range within the mode switching time of the road side unit device.

[0021] In some embodiments thereof, in a case where the road side unit device is in the light sleep mode, the method further comprises:

[0022] periodically detecting, in the light sleep mode, whether a vehicle enters within the current detection range.

[0023] In some embodiments thereof, in a case where a vehicle enters within the current detection range, the method further comprises:

[0024] controlling the road side unit device to enter a standard mode of interacting with a current vehicle within the current detection range, and periodically updating, within a time when the current vehicle is within the current detection range, a second vehicle information of the current vehicle to a server.

[0025] In a second aspect, a road side unit device is provided in the embodiments. The road side unit device comprises a detection component, a low-power consumption component, a communication component, and a control component. The detection component, the low-power consumption component, and the communication component are in communication connection with the control component. Wherein:

[0026] The detection component is configured to detect whether a vehicle enters within a current detection range of the road side unit device, and feed a detection result to the control component in real time.

[0027] The communication component is configured to query whether first vehicle information of a target vehicle exists within a preset front detection range of a front road section of the current detection range, and feed a query result to the control component in real time.

[0028] The low-power consumption component is configured to execute power consumption logic in different power consumption modes based on an instruction of the control component, so as to make the road side unit device enter a corresponding power consumption mode. The power consumption mode comprises a deep sleep mode and a light sleep mode.

[0029] The control component is configured to execute the control method of the road side unit device according to the first aspect based on the detection result and the query result.

[0030] In some embodiments thereof, the deep sleep mode is that the detection component, the communication component, and the control component are all powered off, and the low-power consumption component enters a low-power consumption sleep mode.

[0031] In some embodiments, the light sleep mode is that the detection component, the communication component, and the control component are powered on, the detection component turns off the signal sending function and turns on the signal receiving function, and the communication component enters the sleep mode.

[0032] In a third aspect, a low-power-consumption system is provided in the embodiment, which comprises a road side unit device and a server; the road side unit device and the server are in communication connection; the road side unit device is provided with a control component;

[0033] The server is configured to store vehicle information uploaded by each road side unit device in the low-power-consumption system when the road side unit device detects a vehicle entering in the detection range of the road side unit device in a detection scenario.

[0034] The control component of the road side unit device is configured to execute the control method of the road side unit device according to the first aspect.

[0035] In some embodiments, the low-power-consumption system further comprises an ETC detection device; the ETC detection device is arranged at an entrance position of the detection scenario; wherein:

[0036] The ETC detection device is configured to upload vehicle information of a vehicle entering the entrance position to the server when the ETC detection device detects the vehicle entering the entrance position.

[0037] In a fourth aspect, an electronic device is provided in the embodiment, which comprises a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor implements the control method of the road side unit device according to the first aspect when executing the computer program.

[0038] In a fifth aspect, a storage medium is provided in the embodiment, which stores a computer program executable by a processor to implement the control method of the road side unit device according to the first aspect.

[0039] Compared with the related art, the control method of the roadside unit device, the roadside unit device and the low-power consumption system provided in the embodiment, in the case where the first vehicle information of the target vehicle located in the preset front detection range of the front road section of the current detection range of the roadside unit device is acquired, it is judged whether the vehicle enters the current detection range; if the vehicle does not enter the current detection range, based on the first vehicle information, it is predicted whether the target vehicle can reach the current detection range within the mode switching time of the roadside unit device; the mode switching time is the time when the roadside unit device switches from the deep sleep mode to the light sleep mode; if the target vehicle cannot reach the current detection range within the mode switching time, the roadside unit device is controlled to reduce the power consumption and enter the deep sleep mode; wherein the power consumption of the deep sleep mode is lower than that of the light sleep mode. The vehicle information based on the front detection range realizes the switching of different power consumption modes of the roadside unit device, thereby reducing the deployment cost required for reducing the power consumption of the roadside unit device while reducing the power consumption of the roadside unit device.

[0040] The details of one or more embodiments of the present application are presented in the following drawings and description to make other features, objects and advantages of the present application more clear and easy to understand. BRIEF DESCRIPTION OF DRAWINGS

[0041] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0042] Figure 1 It is the application scenario diagram of the control method of the roadside unit device of the embodiment;

[0043] Figure 2 It is the flow chart of the control method of the roadside unit device of the embodiment;

[0044] Figure 3 It is the flow chart of the control method of the roadside unit device of the preferred embodiment;

[0045] Figure 4 It is the structural block diagram of the roadside unit device of the embodiment;

[0046] Figure 5 It is the structural block diagram of the low-power consumption system of the embodiment. DETAILED DESCRIPTION

[0047] In order to more clearly understand the purpose, technical scheme and advantages of the present application, the present application is described and explained in combination with the drawings and embodiments.

[0048] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as those commonly understood by a person having ordinary skill in the art to which the present application belongs. In the present application, the terms "one", "a", "an", "the", "these", and similar words do not indicate a quantity restriction, and they can be singular or plural. In the present application, the terms "include", "contain", "have", and any variants thereof are intended to cover non-exclusive inclusion; for example, a process, method, and system, product or device containing a series of steps or modules (units) are not limited to the listed steps or modules (units), but can include steps or modules (units) not listed, or can include other steps or modules (units) inherent to the process, method, product or device. In the present application, the terms "connected", "connected", "coupled" and the like do not limit to physical or mechanical connection, but can include electrical connection, whether direct or indirect. In the present application, "multiple" means two or more. "And / or" describes the association between the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean that A exists alone, A and B exist together, and B exists alone. Generally, the character " / " represents an "or" relationship between the objects before and after. In the present application, the terms "first", "second", "third", and the like are only used to distinguish similar objects, and do not represent a specific order of the objects.

[0049] Figure 1 is an application scenario of the control method of the roadside unit device of the present embodiment. As shown in Figure 1 , the application scenario includes three detection devices, wherein the detection device 101 can be an ETC detection device located at the entrance position of the road section, or the first roadside unit device in the forward direction of the vehicle. The detection device 102 and the detection device 103 are both roadside unit devices. The detection device 101, the detection device 102, and the detection device 103 communicate with the V2X platform 105 to interact vehicle information. For the detection device 102 or the detection device 103, in the case of obtaining the first vehicle information of the target vehicle 104 in the preset front detection range of the front road section located in front of the current detection range, it is judged whether a vehicle enters the current detection range; if no vehicle enters the current detection range, based on the first vehicle information, it is predicted whether the target vehicle 104 can reach the current detection range within the mode switching time of the roadside unit device; the mode switching time is the time for the roadside unit device to switch from the deep sleep mode to the light sleep mode; if the target vehicle 104 can reach the current detection range within the mode switching time, the roadside unit device is controlled to enter the light sleep mode to reduce the power consumption of the roadside unit device; wherein the power consumption of the deep sleep mode is lower than that of the light sleep mode.

[0050] like Figure 1 As shown, the target vehicle 104 is about to enter the current detection range of the detection device 101, therefore the detection device 101 can enter standard mode. The detection device 102 is a roadside unit device, which, through communication with the V2X platform 105, can determine the position and speed of the vehicle 104 and determine that the vehicle 104 will arrive at the current detection range in a short time. Therefore, the detection device 102 enters shallow sleep mode to reduce power consumption. The detection device 103 is a roadside unit device, which, through communication with the V2X platform 105, can determine that the vehicle 104 will arrive at the current detection range in a longer time. Therefore, it enters deep sleep mode to reduce power consumption.

[0051] This embodiment provides a control method for roadside unit equipment. Figure 2 This is a flowchart of the control method for the roadside unit equipment in this embodiment, as shown below. Figure 2 As shown, the process includes the following steps:

[0052] Step S210: If the first vehicle information of the target vehicle is obtained within the preset front detection range of the road segment in front of the current detection range of the roadside unit device, it is determined whether a vehicle has been detected entering within the current detection range.

[0053] The roadside unit (BTU) includes a cellular module capable of communicating with the V2X platform. For example, a cellular 4G or 5G module. Based on the cellular module, the BTU can send relevant vehicle information within its current detection range to the V2X platform, and can also query the V2X platform for vehicle information sent by BTUs deployed on other road sections. To predict how long it will take for a vehicle to reach the current detection range and determine whether to enter sleep mode, the BTU can query the V2X platform to see if there is any vehicle entry detection information within a preset preceding detection range of the road segment preceding the current detection range. If vehicle entry information is found within the preceding detection range, the first vehicle information of the target vehicle within that preceding detection range is obtained. For example, this first vehicle information may include: at time t1, a vehicle with ID (Identity document) a is at location b, and its speed is m km / h.

[0054] Furthermore, the forward detection range can be the detection range of the forward equipment deployed on the road segment preceding the current roadside unit equipment. For example, the detection range of the forward equipment closest to the current roadside unit equipment. The first vehicle information can be information such as the target vehicle's speed, vehicle position, vehicle identification, and time of arrival at the forward detection range. Similarly, the target vehicle can be one or more vehicles that arrive at the current detection range in the shortest time.

[0055] After its initial startup, the roadside unit device can register with the aforementioned V2X platform and query vehicle information within its forward detection range. During subsequent operation, the roadside unit device can also periodically query vehicle information within its forward detection range from the V2X platform. Upon obtaining the first vehicle information, it can be determined that a vehicle exists within the forward detection range of the current detection area. Therefore, the current detection range of the roadside unit device will be subject to vehicle entry for a period of time. Thus, it is first necessary to determine whether a vehicle has been detected within the current detection range to decide whether the roadside unit device can be put into sleep mode to reduce its power consumption.

[0056] Preferably, the roadside unit may specifically include a main control module, a GNSS (Global Navigation Satellite System) module, a cellular module, a V2X module, and a low-power MCU (Microcontroller Unit) module. The GNSS module provides location and clock synchronization information to the main control module and the V2X module. The cellular module communicates with the server, i.e., the V2X platform, reporting vehicle information detected within the current detection range and obtaining vehicle-road cooperative information to be broadcast from the V2X platform. The V2X module detects vehicle information within the current detection range and interacts with vehicles within that range. The low-power MCU module, based on signals from the main control module, implements power logic under different power consumption modes to control the power-on and power-off of other modules.

[0057] Step S220: If no vehicle is detected entering the current detection range, then based on the first vehicle information, predict whether the target vehicle can reach the current detection range within the mode switching time of the roadside unit device; the mode switching time is the time for the roadside unit device to switch from deep sleep mode to shallow sleep mode.

[0058] If no vehicle is currently within the detection range, the arrival time of the target vehicle can be predicted. For example, the arrival time of the target vehicle within the current detection range can be determined based on information such as its position and speed. The approximate arrival time range can also be predicted by combining factors such as current road conditions, weather, and traffic control in the detection scenario. For instance, the earliest arrival time of the target vehicle within the current detection range can be calculated based on information such as the vehicle position and arrival time at the preceding detection range contained in the target vehicle's first vehicle information, combined with the maximum speed of the lane in the detection scenario. Preferably, this earliest time is calculated based on the target vehicle's position, arrival time at the preceding detection range, and 1.2 times the maximum speed of the lane. Alternatively, if traffic control is implemented on the road section where the roadside unit equipment is located due to weather factors such as heavy fog or heavy snow, it can be determined that the target vehicle will not pass through the current detection range of the roadside unit equipment within a preset time period.

[0059] Additionally, this embodiment provides two different sleep modes: deep sleep mode and shallow sleep mode. The power consumption of the roadside unit device in deep sleep mode is lower than that in shallow sleep mode, and the power consumption in shallow sleep mode is lower than that in standard mode. Switching from deep sleep mode to shallow sleep mode requires powering on and initializing all components within the roadside unit device, which takes a relatively long time. The time taken to switch from deep sleep mode to shallow sleep mode is the mode switching time of the roadside unit device. By comparing the arrival time of the target vehicle within the current detection range with the mode switching time, it is determined whether the roadside unit device should enter deep sleep mode before the target vehicle arrives. For example, if the arrival time of the target vehicle is T1 and the mode switching time is T2, if T1 is less than T2, it indicates that if the roadside unit device enters deep sleep mode at this time, the target vehicle will have already passed through the current detection range and left before the shallow sleep mode switch is completed, thus preventing the detection of the target vehicle's information. Therefore, when T1 is less than T2, it is necessary to control the roadside unit equipment to enter a shallow sleep mode, and when T1 is greater than T2, it is possible to control the roadside unit equipment to enter a deep sleep mode.

[0060] Additionally, if the roadside unit enters a shallow sleep mode, it periodically checks if any vehicles have entered the current detection range. If no vehicle is detected, the communication component (cellular module) in the roadside unit is awakened to query the V2X platform for updated V2X messages. The communication component then enters sleep mode again until a vehicle is detected within the current detection range, at which point it enters standard mode. This standard mode is the normal operating mode of the roadside unit.

[0061] Additionally, if the roadside unit device can enter deep sleep mode, the deep sleep time can be calculated based on the arrival time and mode switching time mentioned above. Preferably, the difference between the arrival time T1 and the mode switching time T2, T1-T2, can be used as the deep sleep time. When the roadside unit device has been in deep sleep mode for the duration of this deep sleep time, it can be switched to shallow sleep mode to wait for the target vehicle to arrive.

[0062] Step S230: If the target vehicle cannot reach the current detection range within the mode switching time, the roadside unit device is controlled to reduce power consumption and enter deep sleep mode; wherein, the power consumption of deep sleep mode is lower than that of shallow sleep mode.

[0063] In related technologies, it is necessary to ensure that vehicles on highway lanes are always within the coverage area of ​​at least one roadside unit device, resulting in a high deployment density and consequently high equipment costs. This embodiment determines the specific sleep mode by querying vehicle information within the forward detection range using roadside unit devices and predicting the time it takes for a vehicle to arrive at the current detection range. Compared to related technologies, this embodiment does not require a high-density deployment of roadside unit devices, thus reducing power consumption and equipment deployment costs.

[0064] In steps S210 to S230, after obtaining the first vehicle information of a target vehicle located within a preset forward detection range of the road segment preceding the current detection range of the roadside unit device, it is determined whether a vehicle has been detected entering the current detection range. If no vehicle has been detected, based on the first vehicle information, it is predicted whether the target vehicle can reach the current detection range within the mode switching time of the roadside unit device. The mode switching time is the time it takes for the roadside unit device to switch from deep sleep mode to shallow sleep mode. If the target vehicle cannot reach the current detection range within the mode switching time, the roadside unit device is controlled to reduce power consumption and enter deep sleep mode. The power consumption of deep sleep mode is lower than that of shallow sleep mode. This method, based on vehicle information within the forward detection range, enables switching between different power consumption modes of the roadside unit device. This reduces power consumption while eliminating dependence on the coverage range of the roadside unit device, thereby reducing deployment costs associated with power consumption reduction. Furthermore, by controlling the roadside unit device to enter the lower-power deep sleep mode, its power consumption can be further reduced.

[0065] Furthermore, in one embodiment, the control method for the roadside unit device described above may further include the following steps:

[0066] In step S240, if it is predicted that the target vehicle will reach the current detection range within the mode switching time of the roadside unit device, the roadside unit device is controlled to enter a shallow sleep mode. Step S240 enables timely vehicle detection, thereby improving the stability and timeliness of the equipment operation.

[0067] In another embodiment, based on step S230 above, after controlling the roadside unit device to enter deep sleep mode, the control method for the roadside unit device may further include the following steps:

[0068] Step S231: Based on the first vehicle information and mode switching time, set the deep sleep time.

[0069] Specifically, the arrival time of the vehicle to the current detection range can be calculated based on information provided in the first vehicle information, such as vehicle speed or lane speed limit, vehicle position, and the time it takes for the vehicle to arrive at the forward detection range. The deep sleep time is then calculated based on the arrival time and mode switching time.

[0070] Step S232: When the time that the roadside unit device has been in deep sleep mode reaches the deep sleep time, control the roadside unit device to switch from deep sleep mode to shallow sleep mode.

[0071] By setting the deep sleep time based on the first vehicle information and the mode switching time, the time when the roadside unit equipment is in deep sleep mode can be reasonably controlled. This allows the roadside unit equipment to successfully switch from deep sleep mode to shallow sleep mode before the target vehicle arrives, thereby avoiding missing the detection of vehicles entering the current detection range.

[0072] In another embodiment, the control method for the roadside unit device described above may further include the following steps:

[0073] Step S251: Periodically query the server for information on vehicles entering the area detected by the front-end device within the preset front-end detection range; wherein, the front-end device is a roadside unit device or ETC detection device set in the front section of the current detection range.

[0074] Specifically, after startup, the roadside unit device periodically queries the server, i.e., the aforementioned V2X platform, for vehicle information uploaded by the front-end device to determine whether any vehicles have entered the front-end detection range. If the roadside unit device is the one closest to the entrance in the detection scenario, then the front-end device for that roadside unit device can be an ETC detection device deployed at the entrance of the detection scenario. If the roadside unit device is not the one closest to the entrance, then the front-end device for that roadside unit device is also a roadside unit device.

[0075] Step S252: If the server queries the information that the front-end device has detected a vehicle entering within the preset front-end detection range, obtain the first vehicle information of the target vehicle within the preset front-end detection range.

[0076] Steps S251 to S252 above, by periodically obtaining the first vehicle information of the front detection range from the server, can accurately predict the time when the vehicle arrives at the current detection range, thus facilitating the planning of the sleep mode switching, thereby eliminating the need to rely on the coverage of the roadside unit equipment in the detection scenario, and reducing the deployment cost of the roadside unit equipment while reducing power consumption.

[0077] In another embodiment, based on step S220 above, the first vehicle information includes vehicle speed and vehicle position; based on the first vehicle information, predicting whether the target vehicle can reach the current detection range within the mode switching time of the roadside unit device may specifically include the following steps:

[0078] Step S221: Calculate the entry time of the target vehicle into the current detection range based on the vehicle speed and vehicle position.

[0079] Step S222: If the entry time is greater than the mode switching time, confirm that the target vehicle cannot reach the current detection range within the mode switching time of the roadside unit device. Understandably, if the target vehicle cannot reach the current detection range within the mode switching time, the roadside unit device can be controlled to enter deep sleep mode; otherwise, it can be controlled to enter shallow sleep mode.

[0080] The above steps S221 and S222 predict whether the target vehicle can reach the current detection range within the mode switching time based on the entry time and mode switching time of the target vehicle. This allows for accurate determination of whether the roadside unit equipment can enter deep sleep mode, thereby improving the stability of the roadside unit equipment's working status.

[0081] Additionally, in one embodiment, when the roadside unit device is in a shallow sleep mode, the control method for the roadside unit device may further include the following steps:

[0082] Step S260: In shallow sleep mode, periodically check whether a vehicle has been detected entering within the current detection range.

[0083] By periodically performing vehicle detection within the current detection range in shallow sleep mode, the real-time nature of vehicle information interaction by roadside unit equipment can be improved, thereby enhancing the stability of roadside unit equipment operation and the timeliness of detection.

[0084] Furthermore, in one embodiment, based on the above step S260, if a vehicle is detected entering within the current detection range, the control method of the roadside unit device may further include the following steps:

[0085] Step S261: Control the roadside unit device to enter the standard mode for data interaction with the current vehicle within the current detection range, and periodically update the second vehicle information of the current vehicle to the server while the current vehicle is within the current detection range.

[0086] When a vehicle is detected entering the current detection range, the roadside unit device is controlled to enter standard mode to interact with the current vehicle, thereby improving the timeliness and stability of the roadside unit device detection.

[0087] The present embodiment will now be described and illustrated through preferred embodiments.

[0088] Figure 3 This is a flowchart of the control method for the roadside unit equipment according to a preferred embodiment. Figure 3 As shown, the control method for this roadside unit equipment includes the following steps:

[0089] Step S301: The RSU device starts up and performs module initialization;

[0090] Step S302: The cellular module logs into the V2X platform, and the GNSS module obtains location information and reports it to the V2X platform.

[0091] Step S303: The cellular module queries the platform to see if the front-end device has detected the vehicle passing by; if yes, proceed to step S304; otherwise, proceed to step S315.

[0092] Step S304: Obtain the passing time and location information of the target vehicle passing through the front-end device, and calculate the time T1 when the target vehicle arrives at the current detection range of this RSU device;

[0093] Step S305: Determine whether T1 is greater than the mode switching time T2; if yes, proceed to step S306; otherwise, proceed to step S307.

[0094] Step S306: Switch the RSU device to deep sleep mode, and after the T1-T2 duration is reached in deep sleep mode, execute step S307.

[0095] Step S307: Switch the RSU device to shallow sleep mode;

[0096] Step S308: Determine whether a vehicle has been detected entering the current detection range; if yes, proceed to step S309; ​​otherwise, proceed to step S313.

[0097] Step S309: Switch the RSU device to the standard mode for normal operation;

[0098] Step S310: Determine whether the vehicle is still within the current detection range. If yes, proceed to step S311; otherwise, return to step S304.

[0099] Step S311: Receive the V2X message sent by the vehicle, parse it to obtain the vehicle information, and report the vehicle information to the V2X platform;

[0100] Step S312: Continue to obtain vehicle information uploaded by the front-end device from the V2X platform;

[0101] Step S313: Wake up the cellular module and update the broadcast V2X message to the V2X platform;

[0102] In step S314, the cellular module enters sleep mode again, waking up after every 0.5 seconds of sleep.

[0103] Step S315: Query the V2X platform after a 0.5-second interval.

[0104] This embodiment also provides a roadside unit device for implementing the above embodiments and preferred embodiments; details already described will not be repeated. The terms "module," "unit," "subunit," etc., used below refer to combinations of software and / or hardware that implement a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0105] Figure 4 This is a structural block diagram of the roadside unit device 40 in this embodiment, as shown below. Figure 4 As shown, the roadside unit device 40 includes: a detection component 42, a low-power component 44, a communication component 46, and a control component 48; the detection component 42, the low-power component 44, and the communication component 46 are respectively communicatively connected to the control component 48; wherein: the detection component 42 is used to detect whether a vehicle has entered within the current detection range of the roadside unit device 40, and feeds back the detection result to the control component 48 in real time; the communication component 46 is used to query whether there is first vehicle information of a target vehicle within a preset detection range of the road segment preceding the current detection range, and feeds back the query result to the control component 48 in real time; the low-power component 44 is used to execute power logic in different power consumption modes based on the instructions of the control component 48, so that the roadside unit device 40 enters the corresponding power consumption mode; the power consumption modes include: deep sleep mode and shallow sleep mode; the control component 48 is used to execute the control method of the roadside unit device provided in any of the above embodiments based on the detection result and the query result.

[0106] Specifically, the detection component 42 can be a V2X module of the roadside unit device 40, the low-power component 44 can be a low-power MCU module of the roadside unit device 40, the communication component 46 can be a cellular 4G or 5G module of the roadside unit device 40, and the control component 48 can be the main control module of the roadside unit device 40. In addition, the roadside unit device 40 also includes a GNSS module. The roadside unit device 40, based on the control component 48, implements the control method of the roadside unit device, thereby switching between different power consumption modes of the roadside unit device based on vehicle information within the forward detection range. This reduces power consumption of the roadside unit device while eliminating dependence on its coverage range, thus reducing the deployment cost required for power consumption reduction.

[0107] Furthermore, in one embodiment, based on the roadside unit device 40 described above, the deep sleep mode is characterized by the complete power-off of the detection component 42, communication component 46, and control component 48, and the low-power component 44 entering a low-power sleep mode.

[0108] Specifically, in deep sleep mode, the main control module, V2X module, cellular module, and GNSS module are all powered off, and the low-power MCU module enters low-power sleep mode, thereby minimizing the power consumption of the roadside unit equipment. Compared to related technologies that require real-time synchronization between RSU devices, the deep sleep mode provided in this embodiment can further reduce the power consumption of the roadside unit equipment.

[0109] Furthermore, in one embodiment, based on the roadside unit device 40 described above, the shallow sleep mode is as follows: the detection component 42, the communication component 46, and the control component 48 are powered on, the detection component 42 turns off the signal transmission function and turns on the signal reception function, and the communication component enters sleep mode.

[0110] Specifically, the main control module, V2X module, cellular module, and GNSS module are restored to power. The V2X module disables its TX (Transmit) function, enabling only its RX (Receive) function to receive broadcast messages from the OBU device. Simultaneously, the cellular module enters sleep mode, waking up periodically to update information with the V2X platform.

[0111] It should be noted that the above modules can be functional modules or program modules, and can be implemented through software or hardware. For modules implemented through hardware, the above modules can reside in the same processor; or the above modules can be located in different processors in any combination.

[0112] This embodiment provides a low-power system 50. Figure 5 This is a block diagram of the low-power system 50 in this embodiment. Figure 5 As shown, the low-power system 50 includes: a roadside unit device 52 and a server 54; wherein the roadside unit device 52 and the server 54 are communicatively connected; the roadside unit device 52 is provided with a control component;

[0113] Server 54 is used to store vehicle information uploaded by each roadside unit device when a vehicle enters its respective detection range in the detection scenario of the low-power system;

[0114] The control unit of the roadside unit device 52 is used to execute the control method of the roadside unit device provided in any of the above embodiments for the roadside unit device 52.

[0115] The aforementioned low-power system switches between different power consumption modes for roadside unit devices based on vehicle information within the forward detection range. This reduces the power consumption of roadside unit devices while eliminating dependence on their coverage area, thereby lowering the deployment costs required for power consumption reduction.

[0116] Furthermore, in one embodiment, the low-power system 50 also includes an ETC detection device; the ETC detection device is located at the entrance of the detection scenario; wherein: the ETC detection device is used to upload vehicle information of the vehicle entering the entrance to the server when a vehicle is detected entering the entrance.

[0117] This embodiment also provides an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0118] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0119] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0120] If the first vehicle information of the target vehicle is obtained within the preset front detection range of the road segment in front of the current detection range of the roadside unit device, it is determined whether the vehicle has been detected entering within the current detection range.

[0121] If no vehicle is detected entering the current detection range, based on the first vehicle information, it is predicted whether the target vehicle can reach the current detection range within the mode switching time of the roadside unit device; the mode switching time is the time for the roadside unit device to switch from deep sleep mode to shallow sleep mode.

[0122] If the target vehicle cannot reach the current detection range within the mode switching time, the roadside unit device is controlled to reduce power consumption and enter deep sleep mode; the power consumption of deep sleep mode is lower than that of shallow sleep mode.

[0123] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated in this embodiment.

[0124] Furthermore, in conjunction with the control methods for roadside unit devices provided in the above embodiments, this embodiment can also provide a storage medium for implementation. The storage medium stores a computer program; when executed by a processor, the computer program implements any of the control methods for roadside unit devices described in the above embodiments.

[0125] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0126] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0127] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

[0128] The term "embodiment" in this application refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily imply the same embodiment, nor does it imply that it is mutually exclusive with or independent of other embodiments. It will be clearly or implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0129] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A control method for roadside unit equipment, characterized in that, The control method includes: If the first vehicle information of the target vehicle is obtained within the preset front detection range of the road segment ahead of the current detection range of the roadside unit device, it is determined whether a vehicle has been detected entering the current detection range. If no vehicle is detected entering the current detection range, then based on the first vehicle information, it is predicted whether the target vehicle can reach the current detection range within the mode switching time of the roadside unit device; the mode switching time is the time it takes for the roadside unit device to switch from deep sleep mode to shallow sleep mode; the vehicle information includes vehicle speed and vehicle position; wherein: Based on the vehicle speed and vehicle position, calculate the entry time of the target vehicle to the current detection range; If the entry time is greater than the mode switching time, it is confirmed that the target vehicle cannot reach the current detection range within the mode switching time of the roadside unit device. If the target vehicle cannot reach the current detection range within the mode switching time, the roadside unit device is controlled to reduce power consumption and enter a deep sleep mode; wherein, the power consumption of the deep sleep mode is lower than that of the shallow sleep mode.

2. The control method for roadside unit equipment according to claim 1, characterized in that, The method further includes: If it is predicted that the target vehicle will reach the current detection range within the mode switching time of the roadside unit device, then the roadside unit device is controlled to enter a shallow sleep mode.

3. The control method for roadside unit equipment according to claim 1, characterized in that, After controlling the roadside unit device to enter a deep sleep mode, the method further includes: Based on the first vehicle information and mode switching time, set the deep sleep time; When the roadside unit device is in the deep sleep mode for a period of time that reaches the deep sleep time, the roadside unit device is controlled to switch from the deep sleep mode to the shallow sleep mode.

4. The control method for roadside unit equipment according to claim 1, characterized in that, The method further includes: Periodically query the server for information on vehicles entering the area detected by the front-end device within a preset front-end detection range; wherein, the front-end device is a roadside unit device or ETC detection device set up in the front section of the current detection range. If the server queries information indicating that the front-end device has detected a vehicle entering within a preset front-end detection range, the server obtains the first vehicle information of the target vehicle within the preset front-end detection range.

5. The control method for roadside unit equipment according to any one of claims 1 to 4, characterized in that, When the roadside unit equipment is in a shallow sleep mode, the method further includes: In the shallow sleep mode, it is periodically checked whether a vehicle has been detected entering the current detection range.

6. The control method for roadside unit equipment according to claim 5, characterized in that, If a vehicle is detected entering within the current detection range, the method further includes: The roadside unit device is controlled to enter a standard mode for data interaction with the current vehicle within the current detection range, and during the time when the current vehicle is within the current detection range, the second vehicle information of the current vehicle is periodically updated to the server.

7. A roadside unit device, characterized in that, The roadside unit includes: a detection component, a low-power component, a communication component, and a control component; the detection component, the low-power component, and the communication component are each communicatively connected to the control component; wherein: The detection component is used to detect whether a vehicle has entered the current detection range of the roadside unit equipment, and to feed the detection result back to the control component in real time. The communication component is used to query whether there is first vehicle information of the target vehicle within a preset front detection range of the road segment preceding the current detection range, and to feed back the query result to the control component in real time; the vehicle information includes vehicle speed and vehicle position; wherein: Based on the vehicle speed and vehicle position, calculate the entry time of the target vehicle to the current detection range; If the entry time is greater than the mode switching time, it is confirmed that the target vehicle cannot reach the current detection range within the mode switching time of the roadside unit device. The low-power component is used to execute power logic under different power modes based on the instructions of the control component, so as to enable the roadside unit device to enter the corresponding power mode; the power mode includes: deep sleep mode and shallow sleep mode; The control unit is used to execute the control method of any one of claims 1 to 6 for the roadside unit device based on the detection result and the query result.

8. The roadside unit equipment according to claim 7, characterized in that, The deep sleep mode is characterized by the complete power-off of the detection component, the communication component, and the control component, and the low-power component entering a low-power sleep mode.

9. The roadside unit equipment according to claim 8, characterized in that, The shallow sleep mode is as follows: the detection component, the communication component, and the control component are powered on again; the detection component disables the signal transmission function and enables the signal reception function; and the communication component enters sleep mode.

10. A low-power system, characterized in that, include: A roadside unit device and a server; wherein the roadside unit device and the server are communicatively connected; the roadside unit device is equipped with a control component; The server is used to store vehicle information uploaded by each roadside unit device when a vehicle is detected entering within its respective detection range under the detection scenario of the low-power system; The control component of the roadside unit device is used to execute the control method of the roadside unit device according to any one of claims 1 to 6.

11. The low-power system according to claim 10, characterized in that, The low-power system also includes an ETC detection device; the ETC detection device is located at the entrance of the detection scenario; wherein: The ETC detection device is used to upload vehicle information of the vehicle entering the entrance location to the server when it detects that a vehicle has entered the entrance location.

12. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the control method for the roadside unit device according to any one of claims 1 to 6.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the control method for the roadside unit device according to any one of claims 1 to 6.

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