Multi-sensor integrated synchronous control method and system for high-precision time-space data acquisition

Abstract

The invention provides a multi-sensor integrated synchronous control method and a multi-sensor integrated synchronous control system for high-precision time-space data acquisition. The method comprises the following steps of: establishing a time-space reference circuit which provides time reference and space reference; establishing a linear reference coordinate system through the time reference and the space reference, and implementing conversion between the linear reference coordinate system and a geodetic coordinate system; sending an analog control signal to an active synchronous sensor according to the preset parameters to realize synchronous control of the active synchronous sensor; and receiving an external event pulse signal, and responding to the interruption generated by the external event pulse signal to realize synchronous control of a passive synchronous sensor. An active synchronous control circuit and a passive synchronous control circuit are provided; and based on the time and space references provided by the time-space reference circuit, the circuits can expand random multiple sensor synchronous control cases aiming at different sensors and control requirements, and have extremely strong expansion and flexible functions.

Description

technical field [0001] The invention relates to a core method of multi-sensor integration in the field of instrument science and technology, in particular to a multi-sensor integration synchronous control method and system for high-precision spatio-temporal data acquisition. Background technique [0002] The establishment of a traditional high-precision time reference includes two parts: one is a high-precision frequency reference, usually using atomic clocks and other equipment; the other is time calibration (time calibration), which is to place it together with a clock recognized by the national standard metrology On time. Its main disadvantages are: commonly used atomic clock equipment is expensive, large in size and weight, complex and expensive to maintain, and poor in anti-environmental interference; although atomic clocks have high frequency stability, they still have accumulated time errors over time and cannot be sustained To maintain a high-precision time referenc...

AI Technical Summary

Problems solved by technology

Its disadvantage is that it does not associate the linear reference coordinates of the vehicle with the collected data. For applications such as road detection and track detection, which are usually based on linear reference coordinates, the spatial positioning expression is very inconvenient.

Its disadvantage is that it can only control the sensors with active synchronous control, such as digital CCD cameras, etc., but cannot realize the synchronous control function for other types of sensors

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