Programmable attenuation system and method for micro-power wireless communication testing

Abstract

The invention relates to a programmable attenuation system and method for micro-power wireless communication testing. The system is characterized in that a human-machine interaction module is connected with a control module through an RS485 interface unit; the control module is connected with an attenuator module; a radio frequency input port and a radio frequency output port are connected with the attenuator module respectively; the attenuator module is formed by connecting N levels of attenuator circuits in series, and the attenuation interval of an attenuator in each level of the attenuator circuit is 0-35 dB; the control module is used for analyzing report information sent by the human-machine interaction module, sending a control instruction to the attenuation module and controlling an attenuation value output by the attenuation module. With the adoption of the programmable attenuation system and method, signal attenuation amplitude and a signal coverage range can be automatically simulated under the control of an industrial personal computer, the coverage radius and the relay capacity of micro-power wireless equipment can be detected efficiently, and the work efficiency of a micro-power wireless testing system is substantially improved.

Description

technical field [0001] The invention relates to the attenuation network field, in particular to a programmable attenuation system and method for micro-power wireless communication testing. Background technique [0002] At present, the local communication methods commonly used in the electricity information collection system mainly include power line carrier communication, RS-485 communication, micro-power wireless communication and other communication technologies. [0003] Micro-power wireless communication technology refers to wireless communication technology that uses frequency bands such as 433MHz, 470MHz-510MHz, and 2.4GHz, transmits power at the milliwatt level, and data transmission rate at the level of kilobits per second, and selects simple modulation methods such as GFSK. Compared with power line carrier communication, micropower wireless communication has the advantages of no need for wiring, high communication reliability, fast communication speed, and stable ne...

AI Technical Summary

Problems solved by technology

[0005] At present, there are many suppliers of micro-power wireless equipment, their operating frequency points and modulation methods are different, and the attenuators that meet their operating frequencies are also different. Manually replace the attenuator of the corresponding frequency band, and even for the same manufacturer of micro-power wireless equipment, the same attenuator needs to switch to different ranges. Due to the large number of manufacturers, there are many types and specifications of attenuators, which makes the manual switching process extremely cumbersome

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