A method for realizing low-power fusion positioning

Abstract

The present invention discloses a method for realizing low-power fusion positioning, comprising the following steps: step 1: using all positioning submodules of a fusion positioning system to perform fusion positioning, obtaining the initial position of a device, and providing the initial position as the current position of the device to a user; step 2: using a speed sensor to detect whether the device moves, if the device does not move, continuing to use the initial position as the current position to provide to the operator; if the device moves, speed determination is performed through the speed sensor, and the speed of the device is compared and determined with a threshold speed, and some positioning submodules of the fusion positioning system are intermittently turned on; step 3: every N2 time interval, the remaining modules of the fusion positioning system are turned on for positioning to verify the result generated by the low-speed positioning, and the positioning obtained at this time is provided to the user as the current position of the device. The present invention intermittently turns on some positioning submodules by determining the speed of the device, thereby reducing the power consumption of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle positioning, and in particular to a method for realizing low-power fusion positioning. Background Art

[0002] Fusion positioning refers to the fusion and correction of positioning data obtained by various positioning technologies such as Beidou positioning, GPS positioning, base station positioning, Bluetooth positioning, and WIFI positioning, and finally obtaining positioning coordinates; the current positioning methods on the market include GPS, base station positioning, Wifi positioning, Bluetooth positioning, and sensor positioning, etc., and more accurate positioning is achieved by integrating multiple positioning methods. The fusion positioning effect is not affected by the surrounding environment. GPS positioning cannot be used in indoor areas, tunnels, etc., and base station and WiFi positioning are also restricted by network signals. Fusion positioning can automatically use sensors to assist positioning in the above environment, so it is not affected by the above environmental factors. However, the frequent use of multiple positioning methods in fusion positioning greatly increases the overall power consumption, and for self-powered devices, it greatly reduces the use time of the equipment.

[0003] Therefore, it is a problem worth studying to provide a method for low-power fusion positioning that can solve the problem of high power consumption of fusion positioning, reduce the overall power consumption of the fusion positioning system, and extend the use time of self-powered equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a method for realizing low-power fusion positioning, which solves the problem of excessively high power consumption of fusion positioning, reduces the overall power consumption of the fusion positioning system, and prolongs the use time of self-powered equipment.

[0005] The object of the present invention is achieved in that:

[0006] A method for realizing low-power fusion positioning comprises the following steps: step 1: using all positioning submodules of a fusion positioning system to perform fusion positioning, obtaining the initial position of a device, and providing the initial position as the current position of the device to a user; step 2: using a speed sensor to detect whether the device is moving, if the device is not moving, continuing to use the initial position as the current position to provide to the operator; if the device is moving, performing speed determination through the speed sensor, and comparing and determining the speed of the device with a threshold speed, and intermittently starting some positioning submodules of the fusion positioning system; step 3: starting the positioning of the remaining modules of the fusion positioning system at intervals of N2 to verify the result generated by the low-speed positioning, and providing the positioning obtained at this time as the current position of the device to the user; if it is found in the above process that the positioning data has a large deviation from the fusion positioning data of all submodules, the device returns to the initial state, performs fusion positioning of all modules, and subsequently selects a positioning strategy according to the speed.

[0007] The fusion positioning system in step 1 includes Beidou, GPS, base station, Bluetooth, WIFI, and gyroscope submodules.

[0008] In step 2, when the speed is greater than the threshold speed V, it is regarded as high-speed positioning. At this time, the fusion positioning system keeps turning on Beidou, GPS, gyroscope positioning, and base station positioning submodules. Every time N1, Bluetooth, WIFI, and gyroscope submodule positioning are turned on to verify the results of high-speed positioning, and the positioning obtained at this time is provided to the user as the current position of the device;

[0009] In step 2, when the speed of the device is less than the threshold speed V1, it is regarded as low-speed positioning. At this time, the fusion positioning system keeps turning on the Bluetooth, WIFI, and gyroscope sub-modules, and compares the signal values ​​of Bluetooth and WIFI, selects the best one as the source of positioning data, and performs fusion verification on the remaining positioning data.

[0010] The remaining modules in step 3 refer to the Bluetooth, WIFI, and gyroscope sub-modules in low-speed positioning. If the WIFI module has a higher positioning accuracy, the WIFI module is selected as the source of low-speed positioning data, and the Bluetooth and gyroscope are used as the remaining modules for positioning; if the Bluetooth module has a higher positioning accuracy, the Bluetooth module is selected as the source of low-speed positioning data, and the WIFI and gyroscope are used as the remaining modules for positioning.

[0011] The beneficial effect of the present invention is that: based on the speed determination mechanism, the present invention intermittently starts part of the positioning submodules by determining the speed of the device, thereby achieving the purpose of reducing the power consumption of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] like Figure 1 As shown, a method for realizing low-power fusion positioning includes the following steps: Step 1: using all positioning submodules of the fusion positioning system to perform fusion positioning, obtaining the initial position of the device, and providing the initial position as the current position of the device to the user; the fusion positioning system in step 1 includes Beidou, GPS, base station, Bluetooth, WIFI and gyroscope submodules.

[0015] Step 2: Use the speed sensor to detect whether the device is moving. If the device does not move, continue to use the initial position as the current position and provide it to the operator; if the device moves, the speed sensor is used to determine the speed, and the speed of the device is compared with the threshold speed, and some positioning submodules of the fusion positioning system are intermittently turned on; when the speed is greater than the threshold speed V, it is regarded as high-speed positioning. At this time, the fusion positioning system keeps turning on the Beidou, GPS, gyroscope positioning, and base station positioning submodules, and turns on the Bluetooth, WIFI, and gyroscope submodules every N1 time to verify the results of high-speed positioning, and provides the positioning obtained at this time as the current position of the device to the user; when the speed of the device is less than the threshold speed V1, it is regarded as low-speed positioning. At this time, the fusion positioning system keeps turning on the Bluetooth, WIFI, and gyroscope submodules, and compares the signal values ​​of Bluetooth and WIFI, selects the best as the source of positioning data, and performs fusion verification on the remaining positioning data.

[0016] Step 3: Every N2 seconds, the remaining modules of the fusion positioning system are turned on to verify the results of the low-speed positioning, and the positioning obtained at this time is provided to the user as the current position of the device; if in the above process, it is found that the positioning data deviates greatly from the fusion positioning data of all sub-modules, the device returns to the initial state and performs fusion positioning of all modules, and then the positioning strategy is selected according to the speed. The above-mentioned remaining modules refer to the Bluetooth, WIFI, and gyroscope sub-modules in the low-speed positioning. If the positioning accuracy of the WIFI module is high, the WIFI module is selected as the source of low-speed positioning data, and the Bluetooth and gyroscope are used as the remaining modules for positioning; if the positioning accuracy of the Bluetooth module is high, the Bluetooth module is selected as the source of low-speed positioning data, and the WIFI and gyroscope are used as the remaining modules for positioning.

[0017] The specific usage process is as follows: an integrated positioning terminal to be launched by our company is listed, and the specific positioning steps are as follows: when the device is powered on, all positioning sub-modules will be turned on for positioning to obtain the initial position. At this time, the instantaneous maximum power is estimated to be about 12w. When the device obtains the initial position and sends the initial position as the current position of the positioning terminal to the cloud platform; the speed detector inside the device begins to detect the speed and compares it with the speed threshold set in the software. If the current speed is greater than the set threshold speed, Beidou, GPS, gyroscope positioning, and base station positioning sub-modules are turned on. At this time, the instantaneous maximum power is about 8W; if the device speed is less than the threshold speed, Bluetooth, WIFI, and gyroscope sub-modules are turned on. At this time, the instantaneous maximum power consumption is about 6W. By selectively turning on the positioning subsystem, the overall power consumption of the entire device can be significantly reduced while ensuring positioning accuracy.

Claims

1. A method for realizing low-power fusion positioning, characterized in that: The following steps are involved: Step 1: Use all positioning submodules of the fusion positioning system to perform fusion positioning, obtain the initial position of the device, and provide this initial position as the current position of the device to the user; Step 2: Use the speed sensor to detect whether the device is moving. If the device is not moving, continue to use the initial position as the current position to provide to the operator; If the device is moving, the speed sensor is used to determine the speed, and the speed of the device is compared with the threshold speed, and some positioning submodules of the fusion positioning system are intermittently turned on; Step 3: At intervals of N2, the remaining modules of the fusion positioning system are turned on to verify the results of the low-speed positioning, and the positioning obtained at this time is provided to the user as the current position of the device; if in the above process, it is found that the positioning data deviates greatly from the fusion positioning data of all sub-modules, the device returns to the initial state and performs fusion positioning of all modules, and then the positioning strategy is selected according to the speed.

2. The method for realizing low-power fusion positioning according to claim 1, characterized in that: The fusion positioning system in step 1 includes Beidou, GPS, base station, Bluetooth, WIFI, and gyroscope submodules.

3. The method for realizing low-power fusion positioning according to claim 1, characterized in that: In step 2, when the speed is greater than the threshold speed V, it is regarded as high-speed positioning. At this time, the fusion positioning system keeps turning on Beidou, GPS, and base station; at interval N1, Bluetooth, WIFI, and gyroscope sub-module positioning are turned on to verify the results generated by high-speed positioning, and the positioning obtained at this time is provided to the user as the current position of the device.

4. The method for realizing low-power fusion positioning according to claim 1, characterized in that: In step 2, when the speed of the device is less than the threshold speed V, it is considered as low-speed positioning. At this time, the fusion positioning system keeps Bluetooth, WIFI, and gyroscope sub-modules turned on, and compares the signal values ​​of Bluetooth and WIFI, selects the best one as the source of positioning data, and performs fusion verification on the remaining positioning data.

5. The method for realizing low-power fusion positioning according to claim 1, characterized in that: The remaining modules in step 3 refer to the Bluetooth, WIFI, and gyroscope sub-modules in low-speed positioning. If the WIFI module has a higher positioning accuracy, the WIFI module is selected as the source of low-speed positioning data, and the Bluetooth and gyroscope are used as the remaining modules for positioning; if the Bluetooth module has a higher positioning accuracy, the Bluetooth module is selected as the source of low-speed positioning data, and the WIFI and gyroscope are used as the remaining modules for positioning.

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