TBOX BLE-RSSI positioning method
A positioning method and X-axis technology, applied in the automotive field, can solve problems such as real vehicle interference, insufficient positioning accuracy, and BLE signal strength fluctuations, and achieve the effect of eliminating the influence of RSSI signal fluctuations and improving positioning accuracy.
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no. 1 example ;
[0046] The present invention provides a TBOX BLE-RSSI positioning method, comprising the following steps:
[0047] S1, providing BLE real vehicle calibration environment;
[0048] S2, specify the distance parameter and angle parameter of the actual vehicle calibration sampling point;
[0049] Taking TBOX as the origin, the direction of the front and rear of the car is the Y axis, and the direction perpendicular to the front and rear of the car is the X axis; the distance parameter is the distance between the calibration sampling point and the origin; the angle parameter is the angle between the calibration sampling point and the X axis;
[0050] S3, calculate the RSSI of the calibration sampling point according to the distance parameter and the angle parameter, specify the weight of each calibration sampling point according to the angle parameter, carry out weighted calculation to the RSSI of the calibration sampling point, and obtain the distance range positioning parameter; ...
no. 2 example ;
[0056] The present invention provides a TBOX BLE-RSSI positioning method, comprising the following steps:
[0057] S1, providing a BLE real vehicle calibration environment; the real vehicle calibration environment is different according to the requirements of each manufacturer, this embodiment exemplarily provides an optimal BLE real vehicle calibration environment; the frequency of the BLE signal is 2.4GHz, and the wavelength is relatively short. Susceptible to interference from the external environment. In order to ensure the calibration accuracy, the environment of the Bluetooth communication distance test needs to be standardized to ensure the reliability of the test results.
[0058] (1) TBOX installation position specification;
[0059] The TBOX needs to be installed in the glove box with a bracket, and the TBOX shell must be complete and the glove box shell installed.
[0060] (2) Test the location and orientation of the mobile phone
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