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Wireless synchronous collecting system

A technology of synchronous acquisition and wireless collector, applied in the direction of signal transmission system, general control system, control/adjustment system, etc., can solve the problems of heavy cable workload, real-time acquisition and transmission errors, etc., to overcome the heavy workload and acquisition accuracy High and easy to operate in the field

Inactive Publication Date: 2015-01-07
SHANGHAI INST OF TECH
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AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in dynamic long-distance monitoring data acquisition, and proposes a wireless synchronous acquisition system, which avoids errors caused by interference in real-time acquisition and transmission, and overcomes the shortcomings of laying a large number of cables and heavy workload.

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Embodiment Construction

[0015] Such as figure 1 The structure diagram of the wireless synchronous acquisition system is shown. The PC host transmits the command sent to the wireless transceiver through the USB interface. The wireless transceiver converts the command into a frequency modulation carrier and transmits it. After the wireless collector receives the synchronous trigger command from the wireless transceiver , Start to collect data, and realize the synchronization of multiple nodes collection.

[0016] The wireless collector mainly consists of a micro-processing part, a power processing part and a wireless transceiver module. The microcontroller is the core of the collector, responsible for data collection, power detection, wireless communication, digital tube display and other tasks. The voltage signal of the external sensor is low-pass filtered for anti-interference processing, and considering that the minimum input voltage is mV, a precision amplifier is added for signal amplification, and t...

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Abstract

The invention relates to a wireless synchronous collecting system which comprises a center node and at least one node. The center node comprises a PC host and a wireless transceiver, and wireless collectors serve as the nodes. The PC host sends sent orders to the wireless transceiver through a USB interface, the wireless transceiver converts the orders into frequency modulation carrier waves and transmits the frequency modulation carrier waves out, and after frequency modulation signals received by the wireless transceiver are demodulated into serial codes, the serial codes are sent back to the PC host through the USB interface; the wireless collectors receive synchronous triggering orders sent by the wireless transceiver, collect data of sensors arranged on a bridge at the same time, process and store the data, receive data calling orders of the center node and then conduct data transmission. Wireless control and wireless real-time transmission are conducted, the collecting precision is high, errors of real-time collection and transmission due to interference are avoided, the defect that a large amount of cables are laid, and consequently the workload is large is overcome, an internal power source and an external power source can be selected for power supply, field operation is convenient, and the wireless synchronous collecting system is an ideal wireless measuring tool.

Description

Technical field [0001] The invention relates to a civil engineering structure monitoring technology, in particular to a wireless synchronous acquisition system. Background technique [0002] In bridge health monitoring, dynamic monitoring requires dozens of nodes, and it is impossible for each node to be several together, which has a certain degree of dispersion. In multi-point and long-distance monitoring, common wired monitoring needs to lay a large number of cables, the operation is complicated, and it takes up a lot of manpower and material resources, and it is necessary to consider the synchronous collection of each node, that is, the phase relationship of each node's collection time. The wireless real-time measurement is susceptible to interference from various external and internal conditions, making the collected data inaccurate. Summary of the invention [0003] The present invention aims at the problems of dynamic remote monitoring data collection, and proposes a wirele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G08C17/02
CPCG05B19/0423G08C17/02
Inventor 郭智刚孙智
Owner SHANGHAI INST OF TECH
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