JPH03223676A - Shock wave recording apparatus - Google Patents

Abstract

PURPOSE:To obtain the data of a shock wave at the time of the landing on the water even when said data is not sent to a telemeter by providing a recording apparatus as a part of a recovery part loading meter and writing the data at the time of the landing on the water thereon by a recovery part in the form of a digital signal to read the same after recovery. CONSTITUTION:The signal outputted from a sensor 1 at the time of the landing on the water is inputted to an amplifier 2 and a low-pass filter 3 to determine a gain and a frequency characteristic to be sent to an A/D converter 4. A writing clock generating circuit 6 and an address counter 7 are started at the time preset by a timer 9 to write a signal (data) on a memory 5. After the recovery in a recovery part, a signal is outputted from an interface circuit 8 of an RS-232C system on a ship or land and output data is taken out by a personal computer and processed by a D/A converter to make it possible to reproduce the data of a shock wave.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is mounted on a flying object such as a rocket, and records the shock waves received when the recovery unit (capsule, etc.) collides with the sea surface when recovering an instrument unit, etc. In practice, measurements were not carried out because it was difficult to obtain enough shock waves to transmit shock waves, and therefore it was difficult to transmit steep pulse waveforms such as shock waves.

Problems to be Solved by the Invention However, the measurement of shock waves in the recovery section is an important factor when considering the reuse of instruments, and it has been desired to realize a method that makes it possible to measure such important data. .

An object of the present invention is to provide a shock wave recording device that enables such shock wave measurement.

Means for Solving the Problems In order to achieve the above object, the present invention provides a recording device as part of the on-board instrument of the recovery section, into which the recovery section writes data at the time of water landing in the form of a digital signal. , and is configured to be read after collection.

Therefore, according to the present invention, although it is not possible to transmit shock wave data from the collecting section using a telemeter, it is possible to obtain data without missing data by temporarily storing it in memory using a recording device and reading it out after collecting, which facilitates data analysis. This has the advantage of being accurate and providing useful data for reusing the instrument section.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. 1
is a sensor for shock wave observation, 2 is an amplifier, 3 is a low-pass filter, and A/D (
Contains 4 analog/digital converters (A/D). 6 is a clock generation circuit for writing into the memory 5, and 7 is an address counter necessary for storing data in the memory 5. 8 is an interface circuit for extracting data, which is an RS-232C circuit.

A timer 9 controls measurement time, such as sending a timing signal to take in data.

Next, the operation of the above embodiment will be explained. In the above embodiment, the signal output from the sensor 1 at the time of water landing is transmitted to the amplifier 2.
The gain and frequency characteristics are determined by the low-pass filter 3 and sent to the A/D converter 4. The clock generation circuit 6 for writing and the address counter 7 are started at a time set in advance by the timer 9, and a signal (data) is generated.
is written into memory 5.

After the recovery part is recovered, it is outputted by the R8-232C type interface circuit 8 on board the ship or on land, and the shock wave data can be reproduced by taking out the output data with a vano controller or the like and performing processing such as D/A conversion. .

As described above, the above-mentioned embodiment has the advantage that it is possible to obtain shock wave data when the recovery unit lands on water even if it cannot be sent to a telemeter, and that it is effective for data analysis.

Effects of the Invention As is clear from the above embodiments, the present invention is designed to obtain shock wave data when the instrument part lands on water regardless of the transmission conditions, and it is possible to obtain effective data when reusing the instrument part. It has the advantage of being able to

[Brief explanation of drawings]

FIG. 1 is a block diagram of a shock wave recording device in one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Sensor, 2...Amplifier, 3...Low pass filter, 4...A/D converter, 5...Memory, 6...
...Clock generation circuit, 7...Address counter, 8
...R8-232C interface, 9...Timer.

Claims (1)

[Claims] A sensor for measuring shock waves at the time of water landing, an A/D converter for converting the output of the sensor from analog to digital, which is installed in a recovery section where the flying object is recovered after landing on the sea;
A shock wave recording device comprising a memory for storing the output of a /D converter, a timer for controlling the measurement time using the sensor, and an interface circuit for taking out the output of the memory to the outside.