Novel and high-efficiency explosion-proof device for electronic explosive
A technology of anti-riot devices and explosives, which is applied in the field of anti-riot devices for electronic explosives, and can solve problems such as electronic explosives
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Embodiment 1
[0015] like figure 1 As shown: Embodiment 1 According to the embodiment of the present invention, a novel alarm device with identification is provided, which is suitable for all occasions such as families, companies, stations, etc., including:
[0016] The induction module is the front end of the anti-riot device, which adopts pulse multi-system harmonic radar to collect signals of electronic explosives, and transmits the collected signals to the signal frequency processor;
[0017] The signal frequency processor and signal transmitter adopt linear frequency modulation continuous wave as the signal transmitted by the transmitter, and transmit the radio frequency signal with f as the center frequency. After detecting the second harmonic scattering of the PN junction, the signal received by the receiving antenna is the transmitted signal 2 times the frequency, the input power of the power amplifier is retreated from the 1dB compression point by 5-l0dB, and it works at a level fa...
Embodiment 2
[0022] The frequency of the RF local oscillator is the same as that of the useful RF channel, that is to say, the lF frequency of the receiver is zero, or the IF signal of the receiver starts from DC, and the intermediate frequency frequency is zero, there is no image interference problem, amplification and filtering It can be realized at DC, and only lower power consumption at DC can obtain the same gain as at higher intermediate frequency. Channel selection is performed at low frequency, and only low-frequency filters need to be used, and on-chip resistors and capacitors can be used. Realize filtering without adding an expensive and bulky surface acoustic filter (SAW).Placing the filter in the baseband can also achieve multi-bandwidth filtering without increasing the board area, because the filtering is done on-chip Yes, so the zero-IF method is very critical in the design of multi-mode receivers. In an ideal situation, the zero-IF receiver seems to be perfect, that is, to ch...
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