KR970047789A - Fuse Receipt Tester for Telemetry - Google Patents

Abstract

The present invention relates to a test apparatus for checking the operation state of the shell fuse, comprising a receiving means for receiving a signal transmitted from the transmitting means of the fuse and input to the measuring means, the receiving means through the antenna fuse transmitting means Means for receiving a signal to be transmitted and filtering a desired signal, amplifying means for increasing and amplifying the signal-to-noise ratio (S / N) of the signal filtered by the means, and amplifying the signal and the local oscillator amplified by the amplifying means. A frequency converting means for mixing the applied sine wave signal and converting it into a low frequency band, selecting means for tuning a low frequency signal mixed by the frequency converting means and a signal input from a local oscillator to select a desired signal, and selecting the selected means from the selecting means Gain amplification means for amplifying a signal to improve gain, and a new signal having improved gain in the gain amplification means. And frequency demodulation means for mixing the signal applied from the local oscillator again to convert the frequency, filtering and amplifying the mixed frequency to demodulate the signal before being modulated by the transmission means, and selecting and filtering the demodulated signal from the frequency demodulation means. Filtering selecting means, amplifying means for amplifying the signal filtered by the filtering selecting means and inputting it to the measuring means, signal distribution means for distributing the signal filtered by the filtering selecting means, and a signal distributed by the signal distribution means. It provides a fuse receiving test apparatus for telemetry having a discriminating means for determining and inputting to the measuring means to receive a signal transmitted from the telemetry transmitter mounted on the shell fuses fired from the muzzle so that the fuses are in flight. Determining whether the operation is normal or abnormal by determining whether the fuse By performing the exact cause of the malfunction occurrence analysis, we can expect a fuse of high quality.

Description

Fuse Receipt Tester for Telemetry

Since this is an open matter, no full text was included.

2 is an exemplary view schematically showing a test apparatus for checking a fuse operation state according to the present invention.

3 is a block diagram showing a device for receiving a telemetry of the fuse to solve the present invention.

4 is a curve diagram illustrating characteristics of a frequency demodulator in a receiver.

Claims (2)

In the apparatus for testing the operating state of the fuse 100 is released from the muzzle, the receiving device 200 for receiving a signal transmitted from the transmitting device of the fuse 100, and the signal output from the receiving device 200 Fuse reception test device for telemetry, characterized in that it comprises a measuring device for measuring the 300. The band pass filter 201 of claim 1, wherein the receiver 200 receives a signal transmitted from the fuse 100 transmitting apparatus through an antenna ANT and filters a desired signal, and the band pass filter ( In order to increase the signal-to-noise ratio (S / N) of the signal filtered in 201), the signal amplified by the RF amplifier 202 and the sine wave signal generated by the local oscillator 204 are mixed. A mixer 203 for converting to a low frequency band, an RF tuner 205 for selecting a desired signal by synchronizing a low frequency signal mixed by the mixer 203 with a signal input from the local oscillator 206, and the RF tuner ( An IF amplifier 207 that amplifies the signal selected in 205 to improve the gain, and a mixer that converts the frequency by remixing the signal whose gain is improved in the IF amplifier 207 and the signal generated by the local oscillator 209 to convert the frequency ( 208 and the mixed frequency in the mixer 208 A band pass filter 210 for filtering the signal, an IF amplifier 211 for amplifying the signal filtered by the band pass filter 210, and a signal before the signal amplified by the IF amplifier 211 is modulated by the transmitter. A frequency demodulator 212 for demodulating the video signal, video filters 213, 214 and 215 for filtering the signal demodulated by the frequency demodulator 212, and a signal filtered by the video filter 213 and 214. The amplifiers 216 and 217 which are amplified and input to the measuring device 300, the signal divider 218 for distributing the signal filtered by the video filter 215, and the signal divider 218 are distributed. And a discriminator 219 for discriminating to demodulate a Doppler signal and a discriminator 220 for discriminating to demodulate an oscillation signal distributed by the signal splitter 218. Test equipment. ※ Note: The disclosure is based on the initial application.