Detection device of nuclear and earthquake instrument system
The present invention relates to a kind of detection device of nuclear and earthquake instrument system.
Seismic instrument system of nuclear power plant reliability of operation, direct relation the safe operation of nuclear power station, therefore, need regularly system's parameters to be detected and verification.The detection of earthquake instrument system is the work that ten minutes is loaded down with trivial details; Need the multinomial important parameter of detection system; Existing detection mode all adopts single detection mode; The demarcation inspection of surface emissivity temperature and strong-motion instrument when the frequency response of separate detection system, acceleration activation threshold value, system component operation, test process need carry many checkout equipments, takies more site space; Because equipment is separate, cause the wiring dismounting complicated, power requirement is higher, the on-the-spot difficulty of using.
Summary of the invention
The present invention aims to provide the detecting device integrated of a kind of nuclear and earthquake instrument system, and it is single to be used to solve existing detection method, carries inconvenience, and it is big to take up room, and detects problems such as implementing complicacy.This device has following significant advantage:
1. with three important parameters of nuclear and earthquake instrument system: the frequency response test of the verification of seismic acceleration activation threshold value, acquisition channel and strong-motion instrument assembly are demarcated response test work and are integrated in one, and have simplified test process and testing apparatus greatly.
The system integration digital frequency synthesizer (DDS) signal generating module, can send the interchange and the direct current signal of ultra-low frequency sinusoidal signal and other requirements very flexibly, carry out threshold triggers check test and acquisition channel frequency sound test.
3. input signal can directly be gathered through digital signal processor (DSP) control AD modular converter with the output signal in real time, and the result is presented on the LCD.
4. the radiation temperature when adopting the wireless telecommunications thermal module of band sucker to measure the earthquake instrument system assembly operating, conveniently moving can be adsorbed on any surface of assembly; Because means of communication is an infrared mode, can not produce electromagnetic interference (EMI) simultaneously to equipment operation.
The present invention not only uses at nuclear power system, also can be used for the detection of other similar earthquake instrument systems.
Description of drawings
Fig. 1 is the structural representation of this device
As shown in Figure 1; Detection device of nuclear and earthquake instrument system is made up of DSP, single-chip microcomputer, DDS signal generator, AD converter, LCD, keyboard, temp probe, infrared communication module and IO interface, and is following to the detection mode of nuclear and earthquake instrument system parameters:
(1) seismic acceleration activation threshold value verification: the IO interface described in this device has three road differential voltage signal output channels.The acquisition module of earthquake instrument system is connected with this device respective channel; Select " activation threshold value verification " test item through keyboard; After setting threshold size and the frequency, Single-chip Controlling DDS generator output voltage signal lets signal amplitude slowly float at setting threshold; AD converter is gathered the output interface signal in real time, is sent to carry out computational analysis among the DSP.In case the incident of initiating earthquake; The alerting signal that earthquake instrument system sends is just received by this device; The magnitude of voltage that is input to the earthquake instrument system acquisition channel during triggering just goes on record, and calculates corresponding accekeration and error size through DSP, is sent to LCD output and shows.
(2) frequency response of acquisition channel test: connect this device according to activation threshold value check test mode; Through keyboard input signal amplitude, frequency and frequency sweep step-length, after the selection frequency response test function, Single-chip Controlling DDS generator output voltage signal; Voltage signal carries out frequency sweep output from 0.05Hz-33Hz automatically; And progressively increasing signal frequency by step-length, AD converter is gathered the output interface signal in real time, is sent among the DSP; DSP calculates judgement to the frequency and the amplitude of signal, and single-chip microcomputer guarantees signal accuracy according to result of calculation correction output signal; Observe the response test of CF if desired, can be through keyboard input spot frequency output mode.Frequency sweep response test process is sent to computing machine through PORT COM, and the result who writes down with nuclear and earthquake instrument system compares, and calculates the frequency response performance.
(3) the strong-motion instrument assembly is demarcated response test: the IO interface described in this device leaves strong-motion instrument cable butting interface; The strong-motion instrument signal input connector is connected on the IO interface; There is multiple nuclear and earthquake instrument system strong-motion instrument assembly in the single-chip microcomputer of this device, selects sensor model number, start and demarcate response test through keyboard; Single-chip Controlling control DDS signal generator is exported the demarcation waveform of corresponding model strong-motion instrument; The response signal that sensor returns is sent to DSP after by the AD converter collection, carries out sensor response accuracy, damping ratio and so rhythmic calculating, result of calculation is presented on the liquid crystal display.
(4) earthquake instrument system assembly operating surface emissivity temperature detection: this installs described wireless temperature detecting element and has vacuum cup, can be adsorbed on the system component surface, guarantees that simultaneously temp probe well contacts with assembly surface.Choose the surface emissivity temperature detecting function through keyboard; Temp probe is adsorbed on the testing component surface, turns on the power switch, detector unit will continue to transmit the measurement temperature through the infrared-ray communication mode this moment; Measurement result is sent to single-chip microcomputer, shows measurement result through liquid crystal display.