Vehicle-mounted non-blind-area positioning navigation and travel posture measuring device and measuring method

Abstract

The invention discloses a vehicle-mounted non-blind-area positioning navigation and travel posture measuring device and a measuring method. The measuring device comprises a satellite positioning module, a magnetic resistance sensor, a tilt angle sensor, a CAN bus interface, a micro controller and an external input/output interface; the outputs of the satellite positioning module, the magnetic resistance sensor and the tilt sensor are connected with the input of the micro controller; the micro controller is in two-way connection with a whole-vehicle CAN bus through the CAN bus interface; the micro controller is in two-way connection with an external device through the external input/output interface. The measuring device has the benefits of no positioning blind area, low development and design cost and low maintenance cost.

Description

technical field [0001] The invention relates to a vehicle-mounted non-blind zone positioning navigation and driving attitude measurement device and measurement method, mainly aimed at the problem of positioning failure caused by satellite signal fading or loss in the existing positioning and navigation module, and the high cost of the gyroscope and the accumulation of errors Based on discrete sensors to solve the motion attitude, and use the yaw angle obtained by the solution to correct and compensate the current positioning data to achieve a positioning navigation and driving attitude measurement device and measurement method without positioning blind spots, it belongs to the automotive electronics vehicle Positioning monitoring and navigation system development field technical field. [0002] Background technique [0003] The core components of today's automotive vehicle positioning monitoring and navigation systems usually include: positioning module (using GPS module or...

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Problems solved by technology

[0004] However, in the prior art, no matter whether the GPS module or the Beidou positioning and navigation module is used, the function of positioning and navigation will not be realized when the satellite signal fades greatly or the satellite signal cannot be received; when the number of receiving satellites is small, It will also lead to inaccurate positioning data, and there are problems such as random deviations, that is, in the prior art, no matter whether the positioning and navigation system adopts the GPS module or the Beidou positioning and navigation module, there is a problem of positioning blind spots.

[0005] With the wide application of gyroscopes, in order to solve the problem of positioning blind spots in existing positioning and navigation systems, various vehicle positioning monitoring and navigation systems based on gyroscope inertial navigation, or GPS / Beidou and gyroscope integrated navigation have emerged one after another. However, In the prior art, the above-mentioned solution results in high system implementation cost and great difficulty due to the following reasons: 1) It needs to adopt a gyroscope with high cost and its own accumulated error problem; 2) It needs to be equipped with an independent speed sensor for speed measurement; 3) It is necessary to use expensive DSP for complex data processing of integrated navigation and to eliminate the limitations of accumulated errors caused by gyroscope navigation

However, in the vehicle positioning monitoring system market where the cost is sensitive and the design difficulty and maintenance difficulty are low, the above solutions in the prior art cannot really be applied in large quantities.

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