KR940006602B1 - Hybrid ic tester of cell nearing fuse - Google Patents

Abstract

Comparing an output data of displaying device with a reference value, deciding whether the result is within a fixed range or not, this measuring apparatus can select a good IC fast and correctly. The apparatus comprises of; a computer (7) for storing a program to control the apparatus; a display device (10) for communicating a data through latch buffer circuits (4,6,8) and a dividing circuit (9); transistors (Q1-Q6) and a step motor (1) for adding a suitable measuring condition; a signal generator (3) and D/A convertor (2); and a hybrid IC connecting its output to a computer and data bus through peak detectors (12,13) and an A/D convertor (17).

Description

Hybrid IC measurement device for shell proximity fuses

1 is a linkage configuration diagram of a proximity fuse hybrid circuit.

2 is a circuit diagram of the present invention.

* Explanation of symbols for the main parts of the drawings

1: Step motor driving circuit 2: D / A (Digital / Analog) converter

3: Signal Generator 4,6,8,16: Latch Buffer Circuit

5: hybrid circuit 7: computer

9: division circuit 10: display device

11: power supply unit 12, 13: peak detector

14: Schmitt trigger circuit 15,18: 3-state buffer,

17: A / D (Analog / Digital) Converter 19: Dip Switch

20: printer device 21: printer interface circuit

Q ₁ -Q ₆ : Transistor 22: Control Panel

RL ₁ -RL ₆ : Relay SW ₁ -SW ₆ : Relay Switch

OP ₁ -OP ₈ : Amplifier VR ₁ -VR ₂ : Variable resistor

SW ₇ : Printer enable switch SW ₈ : Automatic and manual switch

SW ₉ : Reset switch

The present invention relates to a hybrid circuit measuring apparatus of a proximity fuse to test only a good quality product by testing a hybrid circuit used for shell proximity fuse under various conditions.

Hybrid circuits used in shell proximity fuses are composed of several types of complex interconnection, but the hybrid circuits to be measured of the present invention specify the Doppler signal applied from the oscillation circuit as shown in FIG. A band pass filter (BPF) for passing only frequencies within the range, a device for appropriately amplifying it, and an amplified signal are applied to a trigger circuit to output an ignition pulse.

If such a hybrid circuit fails to perform its normal function, it can affect other hybrid circuits that are connected and not only paralyze the various functions, but also produce an ignition pulse that can explode a bomb at an appropriate time. You will not be able to function.

Therefore, the present invention provides a program in which a one-chip computer is required to measure a hybrid circuit having the above functions, and configures a device in which peripheral circuits are interconnected, and thus, a constant voltage is applied to several magnetic items, that is, a hybrid circuit. The amplifier gain which measures the DC voltage measurement item from the output terminal when it is applied, the input current measurement item when the constant voltage is applied, and the output gain according to the change of each frequency after applying a sine wave of a constant voltage to the hybrid circuit. The ignition signal measurement item that measures the measurement item and the ignition pulse output time, the thyristor (SCR) function measurement item that allows the ignition signal to appear, and the voltage applied to the hybrid circuit are halved by driving the step motor. After testing various conditions such as measuring the input impedance at this time The present invention provides a device capable of selecting only high-quality products by precisely measuring a large amount of hybrid circuits in a short time by judging that the hybrid circuits are of good quality when they are within an appropriate range by comparing the data set in the market with the reference set values. There is a purpose.

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

A computer 7 to which a program for controlling all devices is provided is displayed via each latch buffer circuit 4, 6, 8, three-state buffer circuit 15, 18, and a splitting circuit 9. A transistor Q ₁ -Q ₆ and a variable resistor VR connected to the device 10 to enable data exchange, and to the latch buffer circuit ₆ to drive the relays RL _1- RL ₆ to have the necessary measurement conditions. ₁ ) by connecting the step motor 1 for adjusting the VR ₂ , the other latch buffer circuit 4 is connected to the D / A converter 2, and its output is connected to the signal generator 3 through the amplifier OP ₁ . ) Is connected to the resistance resistor VR ₂ , while the hybrid circuit 5 has a relay switch (SW ₁ -SW ₆ ), a capacitor (C) and an amplifier which are folded by driving the relays (RL _1- RL ₆ ). The computer 7 and each of the amplifiers OP ₃ -OP ₈ are connected to each other via OP ₂ , and the outputs of the amplifiers OP ₃ and OP ₇ pass through the peak detectors 13 and 12. O The output of P ₄ ) (OP ₅ ) (OP ₆ ) (OP ₇ ) is directly input to the A / D converter 17, and the output data values thereof are latched buffer circuit 16 and 3-state buffer circuit 15. It is to be applied to the data bus of the computer 7 and the printer interface circuit 23 through.

By the above configuration, it will be described for each measurement item.

First, in order to measure each item is operated according to the automatic and manual switch (SW ₈ ) selection of the operation unit 22, in the present invention will be described for the case of automatic measurement for convenience.

That is, when the automatic switch SW ₈ is connected to the on state, all latch buffer circuits 4, 6, 8 and 3-state buffer circuits 15, 18 according to the program of the computer 7 are connected. An enable signal is applied to the state in which each item can be measured sequentially.

In this situation of a hybrid circuit 5, power source (Vcc) after applying 35V to the terminal, the signal is output from the latch buffer circuit (6) to test the voltage metrics outputted from the d, f-stage transistor (Q ₄₎ of the When applied to the base, the transistor Q ₄ is turned on and thus the relay RL ₄ is driven to connect the relay switch SW ₄ to the on state.

At this time, the voltage of 35V output from the power supply unit 11 is input to the power supply Vcc terminal of the hybrid circuit 5 through the resistor R ₂ and the relay switch SW ₄ connected to the amplifier OP ₆ , The output voltage is applied to the amplifier OP ₅ to be appropriately attenuated and then sent to the A / D converter 17.

In the A / D converter 17, the voltage output from the hybrid circuit 5, that is, the analog signal, is converted into a digital signal that can be read by the computer 7. The latch buffer circuit 16 and the 3-state buffer circuit 15 are converted into a digital signal. It is transmitted to the data bus (DATA BUS) of the computer 7 via.

The computer 7 separates the signals for each function from the division circuit 9 in order to read the data and display the voltage value externally, and is applied to the display device 10 to supply the power Vcc of the hybrid circuit 5. When inputting 35V to terminal, the voltage output to terminal d is displayed.

On the other hand, when the voltage measurement of terminal d is completed, in order to measure the output voltage of terminal f, transistor Q ₆ is turned on by the signal output from latch buffer circuit ₆ to drive fill RL ₆ . (SW ₆ ) is connected and the voltage output from the f terminal of the hybrid circuit 5 is appropriately attenuated by the amplifier OP ₄ and input to the A / D converter 17 to perform the same procedure as above. The value according to the data reading of 7) is displayed numerically on the display device 10.

Therefore, when 35 V is applied to the power supply Vcc terminal of the hybrid circuit 5, the voltages output from the d and f terminals are represented on the display device 10. (5) can be determined.

Next, as an input current measurement item applied to the hybrid circuit 5, the hybrid circuit 5 may perform stable operation when a 35 V voltage is applied to the power supply terminal Vcc of the hybrid circuit 5 to test the voltage measurement item described above. This is to measure the current input to).

That is, when the relay switch SW ₄ is turned on, the value converted from the power supply unit 11 into the current through the voltage of 35V and the resistor R ₂ is simultaneously applied to the amplifier OP ₆ and the comparison output thereof is the A / D converter. By inputting to the (17), the analog amount of the output of the amplifier OP ₆ is converted into a digital amount to transfer data to the computer 7 through the latch buffer circuit 16 and the 3-state buffer circuit 15. 7) reads the data signal so that the current value is displayed on the display device 10 via the division circuit 9.

At this time, when the displayed current value is about 10-19 mA and has a value within the reference range, it is confirmed that a current suitable for the hybrid circuit 5 is supplied.

The following is an item for measuring the amplification gain that is amplified in the hybrid circuit 5 to amplify the Doppler signal. After applying a sine wave of 20 kHz (peak voltage) from the signal generator 3 to the b terminal, the e terminal according to the frequency change is applied. This is to measure the output gain of.

That is, in order to measure the amplifier gain, the latch buffer circuit 6 sends a signal to the transistor Q ₅ to bring it into a conducting state, so that the relay RL ₅ is driven and the relay switch SW ₅ is connected to the computer 7. ), A data signal for measuring the item is output to the D / A converter 2 via the latch buffer circuit 4.

Accordingly, the digital signal applied from the latch buffer circuit 4 is converted to analog, attenuated to about 40 kV (Peak voltage) by the amplifier OP ₁ , and the voltage thereof is sent to the signal generator 3. The latch buffer circuit 6 The step motor driving circuit 1 is operated to adjust the variable resistor VR ₂ to output a sinusoidal wave having a peak voltage of 20 kHz at the signal generator 3.

이 표시장치(10)에 디스플레이 된다.Therefore, the sine wave is input to the b terminal of the hybrid circuit 5 and the gain is output from the e terminal. The 20 kV voltage applied to the b terminal and the gain voltage output from the e terminal are respectively applied to the amplifier OP ₇ (OP ₃ ). After passing through the peak detectors 12 and 13 to detect each peak voltage, it is applied to the A / D converter 17. The voltage is converted into a digital quantity and the data bus of the computer 7 is operated in the same manner as described above. Amplifier gain by being transmitted and computed at

This is displayed on the display device 10.

In addition, the computer 7 adjusts the step motor driving circuit 1 and the signal generator 3 to input the variable frequency in five steps to the b terminal, which is the hybrid circuit 5, and to measure the output gain at each frequency. .

Therefore, when the data displayed on the display device 10 is within the set reference range, it is determined that there is no abnormality in the function of the amplifier for amplifying the Doppler signal, and it is possible to select the high quality hybrid circuit 5.

The following is a measurement item of the ignition time output from the h terminal when 1.5V (DC) is applied to the g terminal of the hybrid circuit 5 as the measurement time of the telephone signal output time. That is, in order to measure the above items, a signal is output from the latch buffer circuit 6 to operate the transistor Q ₃ , so that the relay RL ₃ and the relay switch SW ₃ are connected so that the g terminal of the hybrid circuit 5 is connected. 1.5V is applied.

At this time, the ignition signal output from the h stage is applied to the amplifier OP ₂ , and the time from the time when the output signal is sent to the computer 7 and is completed is compared with the minimum reference voltage (-5V). Displayed on the display device 10, the ignition signal is output for at least 4μsec or more to determine that the good quality product.

The following is an input impedance measurement item when the voltage is applied to the b terminal of the hybrid circuit 5 and finally, the computer 7 controls the step motor driving circuit 1 to control the variable resistor ( the VR ₂₎ for the through the adjustment by gabeon resistance (VR ₁₎ which is the other hand equally adjusted such that the half voltage is applied to the automatic amplifier (OP ₈₎ measurement compared the resistance computer via an a / D converter 17 The calculation is performed in (7), and the input impedance is displayed on the display device 10. It is confirmed that the product is of good quality when the value is within the reference setting range.

In addition to the above-mentioned measurement items, a gain attenuation item for an amplifier that amplifies the Doppler signal. When 35 V is applied to the power supply terminal Vcc of the hybrid circuit 5, and 20 V (peak voltage) is applied to the 2 V and b terminals of the a terminal, the frequency value is measured. It is an item that measures the gain value output from the e terminal when it is 1.5, and also the function measurement of the thyristor SCR built in the hybrid circuit 5 and outputting the ignition signal, that is, the relay switch SW ₁ is on. Ignition signal output measurement at terminal h when off.

On the other hand, when the printer operation switch SW ₇ of the operation unit 22 is connected, the printer device 20 is operated by the computer 7 and the printer interface circuit 21 to record the data values of all the measurement items and record and store the measured values. It is possible to do this, and it is comprised so that the measurement of the hybrid circuit 5 of which the measurement was completed may be carried out by inserting it into a package, and it can measure a large quantity of hybrid circuits 5 in a short time.

As described above, the present invention constitutes a peripheral circuit capable of storing a program necessary for the one-chip computer 7 in order to measure the hybrid circuit 5 used for the shell time fuse and giving conditions suitable for the measurement. Can be measured automatically and manually by each item, and the large amount of hybrid circuits (5) can be measured quickly and accurately to select only high quality products, as well as recording the measured values by the printer interface circuit (21) for permanent data. It is to be preserved.

Claims (1)

The display device is provided to the computer 7 to which the program for controlling the device is provided via the latch buffer circuits 4, 6, 8, the 3-state buffer circuits 15, 18, and the division circuit 9. 10 and the data exchange can be connected to the latch buffer circuit (6) is a relay (RL ₁ -RL _six transistors (Q ₁ -Q ₆₎ with a variable resistor (VR ₁₎ to have a measurement condition necessary to drive the Connect the step motor 1 for adjusting (VR ₂ ) so that the other latch buffer circuit 4 is connected to the D / A converter 2, and its output is applied to the signal generator 3 through the amplifier OP ₁ . Is connected to the variable resistor VR ₂ , while the hybrid circuit 5 has a relay switch SW ₁ -SW ₆ , a capacitor C and an amplifier OP ₂ which are folded by driving the relays RL _1- RL ₆ . ) computer 7 and the respective amplifier via a (OP ₃ -OP ₈₎ for connection to the amplifier (OP ₃₎ (go through a peak-detector (13, the output of the OP ₇₎₎ (12) to another amplifier (OP ₄ ) (OP ₅ ) ( The output of OP ₆ ) (OP ₇ ) is directly input to the A / D converter 17, and its output data value is transferred to the computer 7 and the normal through the latch buffer circuit 16 and the 3-state buffer circuit 15. A hybrid IC measuring device for shell time fuses, characterized in that the printer interface circuit 21 is applied to a data bus.

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