Analog seismic signal generator

Abstract

The invention discloses an analog seismic signal generator and relates to a general detection device of a seism instrument system. The analog seismic signal generator is composed of an input interface, a power source interface, an automatic voltage regulation (AVR) + field programmable gate array (FPGA) data processing module, four kinds of working modules, a section-type liquid crystal displayer, a keyboard + knob coder, and an output interface. The input interface, the AVR + FPGA data processing module, the four kinds of working modules, and the output interface are connected in sequence. The section-type liquid crystal displayer and the keyboard + knob coder are respectively connected with the AVR + FPGA data processing module. The power source interface respectively supplies power to each functional component. The four kinds of working modules comprise a routine waveform output device, a common waveform output device, a seismic waveform output device, and a frequency measurement counter. According to the analog seismic signal generator, a detection device and a detection procedure of the seism instrument system are simplified. Real seism waveform data can be stored and output to detect the capacity that the seism instrument system identifies interference signals, so that reliability of the seism instrument system is improved.

Description

technical field [0001] The invention relates to a general detection device for a seismic instrument system, in particular to an analog seismic signal generator. Background technique [0002] The reliability of the operation of the seismic instrument system is directly related to the safe operation of the monitoring object, so it is necessary to regularly detect and verify the parameters of the system. The detection of the seismic instrument system is a very cumbersome task. The response detection of the seismic signal, because there is no seismic source signal, currently adopts a single detection method, which separately detects the frequency response of the system and the acceleration trigger threshold. There are following deficiencies in existing detection device and method: [0003] 1. The test needs to carry multiple testing equipment, which takes up a lot of on-site space; [0004] 2. Since the equipment is independent of each other, the disassembly and assembly of th...

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Problems solved by technology

[0003] 1. The test needs to carry multiple testing equipment, which takes up a lot of on-site space;

[0004] 2. Since the equipment is independent of each other, the disassembly and assembly of the wiring is complicated, the power supply requirements are high, and it is difficult to use on site;

[0005] 3. The existing equipment cannot completely simulate the real seismic signal. Although the frequency response and acceleration trigger threshold are tested separately, there are still differences with the real seismic signal. Therefore, it will bring higher False alarm rate

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