KR940011631B1 - Rpm measuring apparatus in safety device of proximity fuses - Google Patents

Abstract

The device is disclosed to measure the rotary number from a charge beginning to a charge completion and to select only a product of a good quality according to its result. The device characterizes that a slip ring of a high speed rotary device is connected to a rotary number dividing circuit; a rotary number measuring part is constructed by a display driver, a counter, a comparator and a free set key, the counter being connected with an oscillator and a divider respectively, the comparator being connected to a latch; the latch is applied to a reset switch and a counter of a rotary number measuring part, in the charge completion, this counter being possible to exchange data with comparators of a charge number comparing/measuring part; the latch is connected to a solenoid valve; and a flip-flop is connected to another terminal of AND circuit.

Description

Speed measuring device of shell proximity fuse safety device

1 is a block diagram of the present invention.

* Explanation of symbols for main parts of the drawings

1,21: display device 2,20: display driving circuit

3,19: counter 4,22,24: comparator

5,23,25: preset key 6: reference time generator

7: oscillation circuit 8: inverter

9: optical sensor 10: solenoid valve

11: motor 12: slip ring

13,14 divider circuit 15,18 latch circuit

16: encoder 17, 28: end circuit (AND)

26,29: flip-flop circuit 27: OR circuit

30: rotation speed measuring unit 31: high speed rotation device

32: rotational frequency division circuit 33: the number of load comparison measuring unit

34: Rotation speed measurement part when loading is complete Q ₁ -Q ₅ : Transistor

RL: Relay LED ₁ , LED ₂ : Light Emitting Diode

SW ₁ : Start switch SW ₂ : Stop switch

SW ₃ : reset switch

The present invention relates to a rotation speed measuring device of the shell proximity fuse safety device, in particular, the rotation speed measuring device of the safety device to measure the rotation speed from the start of loading to the completion of loading and to select only good quality products according to the result. It is about. The safety device used for the close-up fuse of the shell generates a powerful rotational force when the shell is fired, and the safety device starts to be loaded by the centrifugal force to align the gunpowder located in the safety device so that the propellant can be exploded by the signal of the electronic part. It is. Therefore, if the safety device fails to start loading despite the centrifugal force due to a certain rotation, the ignition signal that can explode the propellant is not transmitted to the gunpowder, so the shell cannot be exploded at a desired point, thus functioning as a close fuse. It will not work. Therefore, the present invention is a loading test measurement item for measuring the number of revolutions of the finished product is built in the device having the same rotational force as when the shell is fired, and the number of revolutions from the time the loading starts when the specified safety device is released It is an object of the present invention to provide a device that can select only a good safety device by comparing the measurement results and the reference data by testing a non-loaded measurement item to measure that it is not loaded at a constant rotation speed.

Hereinafter, described in detail by the accompanying drawings as follows.

Rotation consisting of divider circuit 13, 14, latch circuit 15, and encoder 16 in slip ring 12 of high-speed rotating device 31 which imparts the same rotational force as when firing a shell as shown in FIG. A rotation speed measuring unit 30 including a display driving circuit 2, a counter 3, a comparator 4, and a preset key 5 for connecting the frequency divider circuit 32 and operating the display device 1. The counter 3 is connected to the oscillation circuit 7 through the reference time generator 6 and connected to the divider circuit 13 of the frequency division circuit 32, respectively. The latch circuit 18 is connected through an AND circuit 17, and the latch circuit 18 includes a reset switch SW ₃ , a counter 19, a display driving circuit 20, and a display device 21. Upon completion, it is applied to the counter 19 of the rotation speed measuring unit 34 and the counter 19 is provided with a comparator 22 and 24. Mounting consisting of the reset key 23, 25 and flip-flop circuit 26, Iowa circuit 27, AND circuit 28 and a transistor _{(Q 4) (Q 4)} , a light emitting diode (LED ₁₎ (LED ₂₎ Data exchange is possible with the comparators 22 and 24 of the number comparator 33, while the latch circuit 18 side is connected to the solenoid valve 10 of the high speed rotating device 31 via the transistor Q ₃ . It is a rotation speed measuring device of a shell proximity fuse safety device in which the flip-flop circuit 29 connected to the start switch SW ₁ and the stop switch SW ₂ is connected to the other terminal of the end circuit 17 simultaneously with the connection. .

The present invention having the above configuration will be described in detail according to each measurement item as follows.

로 감쇄시킨 후 회전수 측정부(30)인 카운터(3)에 전달된다. 한편 발진회로(7)에서 출력되는 주파수를 기준시간발생기(6)에 의해 100ms 주기의 펄스를 발생시켜 카운터(3)에 계속 인가되므로 카운터(3)는

로 나누어진 펄스에 의해 "로우(LOW)"기간 동안은 계수하고 "하이(high)"기간 동안은 리세트를 반복한다. 따라서 카운터(3)는 반복되는 기간 동안 엔코더(16)에서 츨력되는 주파수(1회전에 600계의 펄스발생)는 리세트 펄스 100ms 사이에 주파수를 인가하여 규정된 시간 사이에 계수되는 숫자를 디스플레이 구동회로(2)에 전달하여 고속회전장치(31)가 회전되는 회전수를 디스플레이장치(1)에 계속적으로 증가하는 회전수가 수치로 표시된다.First, when the start key SW ₁ is connected to an on state, the transistor Q ₁ is turned on by the control signal of the flip-flop circuit 29 to operate the relay RL to relay the switch SW ₄ . By connecting to rotate the motor 11 in the inverter (8). At this time, when a rotation signal from the slip ring 12 is applied to the encoder 16 of the rotation frequency division circuit 32, a pulse proportional to the rotation speed is generated, and this pulse is generated by the divider circuit 13.

After the attenuation to the counter is transmitted to the counter (3) which is a rotation speed measuring unit (30). On the other hand, since the frequency output from the oscillation circuit 7 is continuously applied to the counter 3 by generating a pulse of a 100 ms period by the reference time generator 6, the counter 3 is

The pulse divided by counts during the "low" period and repeats the reset during the "high" period. Therefore, the counter 3 outputs the number counted between the prescribed times by applying a frequency between the reset pulses 100ms and the frequency output from the encoder 16 during the repetitive period (600 pulses in one revolution). The number of revolutions which is transmitted to the furnace 2 and the speed at which the high speed rotary device 31 is rotated is continuously displayed on the display device 1 in numerical values.

로 분주하여 카운터(19)에 인가되면 10개의 펄스가 인가될때 1회전으로 판단하게 된다) 일정시간이 경과하여 장전이 완료되면 광센서(9)가 장전완료를 감지하게 되면 스립링(12)에서 트랜지스터(Q₂)를 구동하게 되므로 래치회로(15)에서 카운터(19)로 계수중지 신호를 인가함에 따라 디스플레이장치(34)에 장전이 완료되는 시점의 회전수가 표시된다.On the other hand, after comparing the rotation speed value set in the preset key 5 and the rotation speed value applied by the counter 3 with the comparator 4, if the value is the same, a signal is applied to the AND circuit 17 and the latch circuit ( In 18), the transistor Q ₃ is operated to drive the solenoid valve 10, thereby forcibly dismantling the safety pin of the safety device. At the same time, the counter 19 is operated so that the number of revolutions is counted from the time when the safety device is released. (The counter 19 operation of the revolution counts the encoder 16 signal by the divider circuit 14).

When 10 pulses are applied, it is judged as 1 revolution when the counter is applied to the counter 19. When the loading is completed after a predetermined time, the slip ring 12 detects the completion of the loading. Since the transistor Q ₂ is driven, the number of revolutions at the time when the loading is completed is displayed on the display device 34 by applying the count stop signal from the latch circuit 15 to the counter 19.

값이 카운터(19)에 인가되어 계수된 값이 비교기(22)(24)에 인가되어 프리세트키이(23)(25)에 의해 세팅된 값과 비교하여 최저 값보다 카운터(19)의 계수값이 클때에는 각 비교기(22)(24)의 B신호가, 오아회로(27) 및 앤드회로(28)에서 조합되어 플립플롭회로(26)에 전달되어 트랜지스터(Q₄)를 구동하게 됨으로서 발광 다이오드(LED₁)를 점등시켜 일정 회전수 까지는 장전되지 않음을 알며 양품인것을 확인하게 되며 카운터(19) 값이 프리세트키이(23)(25)의 세팅 값보다 적을때에는 각 비교기(22)(24)에서

신호를 오아회로(27) 및 앤드회로(28)에 인가되어 상기 신호를 조합한 후 래치회로(26)에서 트랜지스터(Q₅)를 동작시켜 발광 다이오드(LDE₂)를 점등하게 함으로서 규정회전수 이내에 장전이 되었음을 알려 불량임을 확인토록 한 것이다.At this time, if the number of revolutions displayed in the 25-38 rotation range is completed, it is determined that the safety device is a good product. On the other hand, the rotation speed determination at the time of loading is based on the pulse output from the encoder 16.

The value is applied to the counter 19 and the counted value is applied to the comparators 22 and 24 to compare with the value set by the preset keys 23 and 25 to count the counter value of the counter 19 above the lowest value. In this case, the B signals of the comparators 22 and 24 are combined in the OR circuit 27 and the AND circuit 28 and transmitted to the flip-flop circuit 26 to drive the transistor Q ₄ . It turns on (LED ₁ ) and knows that it is not loaded until a certain number of revolutions, and confirms that it is good.When the value of counter 19 is smaller than the setting value of preset key 23, 25, each comparator 22 (24) )in

The signal is applied to the OR circuit 27 and the AND circuit 28 to combine the signals, and then operates the transistor Q ₅ in the latch circuit 26 to turn on the light emitting diode LDE ₂ within a predetermined rotational speed. It is to be confirmed that the loading is bad.

As described above, the present invention provides the safety device used for the shell close-up fuse within the load test and the prescribed rotational speed to give the same conditions as when the shell is fired, and to measure the rotational speed until the safety device is released and loaded. It is a device that can manufacture precise proximity fuses by selecting only high quality safety devices by performing non-loading test to measure the loading status.

Claims (1)

A rotation frequency divider circuit 32 comprising a divider circuit 13, 14, a latch circuit 15, and an encoder 16 in a slip ring 12 of a high-speed rotating device 31 which imparts the same rotational force as when a shell is fired. And a rotation speed measuring unit 30 including a display driving circuit 2, a counter 3, and a comparator 4 and a preset key 5 for operating the display device 1, ) Is connected to the oscillator circuit 7 via the reference time generator 6 and to the divider circuit 13 of the frequency division circuit 32, respectively, while the comparator 4 is connected via an end circuit 17. The latch circuit 18 is connected, and the latch circuit 18 includes a reset switch SW ₃ , a counter 19, and a display driving circuit 20. The counter 19 is applied to the counter 19, and the counter 19 has a comparator 22 (24) and a preset key (23) (25). And a charge counter comparison unit 33 including a flip-flop circuit 26, an OR circuit 27, an end circuit 28, a transistor Q ₄ , Q ₄ , and a light emitting diode LED ₁ LED ₂ . Data exchange is possible with the comparators 22 and 24 of the circuit, while the latch circuit 18 is connected to the solenoid valve 10 of the high speed rotating device 31 via the transistor Q ₃ and at the same time the start switch ( Rotation speed measuring device of the shell proximity fuse safety device, characterized in that the flip-flop 29 is connected to the other terminal of the end circuit (17) is connected to the SW ₁ and the stop switch (SW ₂ ).

Images