KR940006601B1 - Hybrid ic tester of cell nearing fuse - Google Patents

Abstract

By measuring a function of hybrid IC under a certain added condition and comparing the measuring data with reference values, this apparatus can select a good quality IC fast and correctly at an auto or manual mode. The apparatus comprises of; storing a needed program at an one-chip computer (24); composing a peripheral circuit (peak detector (5), amplifiers (OP1-OP6), an A/D convertor (13), a dividing circuit (22), latch buffer and multiplexor (8)) to add a suitable condition for measuring; and interfacing a printer circuit (20) to print the data.

Description

Hybrid IC measuring device of shell near fuse

1 is a block diagram of a hybrid circuit of a hybrid circuit embedded in a shell near-fuse fuse, which is a measurement target of the present invention.

2 is a circuit diagram of the present invention.

* Explanation of symbols for main parts of the drawings

1, 7, 15, 23: Latch Buffer Circuit

2: D / A (Digital / Analog) Converter 3: Buffer Circuit

4: Signal generator 5, 10, 11: Peak detector

6 hybrid IC 8 multiplex

9: power supply unit 12: Schmitt trigger circuit

13: A / D (Analog / Digital) Converter 14: Control Panel

16: printer device

17,19: 3-state buffer circuit

20: printer interface circuit

21: display device 22: division circuit

24: Computer OP ₁ -OP ₆ : Amplifier

Q ₁ -Q ₂ : Transistor RL ₁ -RL ₂ : Relay

SW ₁ -SW ₂ : Relay switch SW ₃ : Printer enable switch

SW ₄ : Manual and Auto Switch SW ₅ : Reset Switch

R ₁ -R ₅ : Resistor C ₁ -C ₃ : Capacitor

The present invention relates to a hybrid circuit measuring device of a shell near fuse so as to select only good quality products by measuring the function of the hybrid circuit used in the shell near-fusing fuse by giving various conditions and comparing and judging the reference set value and the measured data value. will be.

The shell proximity fuse is composed of a hybrid circuit having various functions.

In particular, the hybrid circuit which is the measurement target of the present invention is an important circuit which forms the core of them. That is, as shown in FIG. 1, the Doppler signal output from the oscillator circuit of the fuse is selected and output only by a signal required by another hybrid circuit. A level detector, a logic controller, and a self-oscillator and a self-oscillator for detecting such a signal are output. Function, close paralysis function.

Therefore, the present invention is a device capable of selecting only high quality hybrid circuits by precisely measuring hybrid circuits having the above functions in order to fabricate high-performance proximity fuses, and gives a program required for one chip computer. And make various conditions by the peripheral circuits.When a certain voltage is applied to the measured value of all items shown at this time, that is, the output voltage of each terminal is measured, and when appropriate voltage is applied to a specific terminal The pulse is output, the sensing frequency measurement item for measuring the frequency at this time, the voltage measurement item for the trigger signal, the self-determination time measurement item for measuring the time from the power up until the trigger signal is output, the frequency and peak output from the self-oscillator (Peak) Self oscillation frequency and voltage measurement item for measuring voltage When the trigger pulse disappears, if all measurement differences such as proximity and self-paralyzed voltage measurement items that measure the voltage of a specific terminal are within the standard setting range of the specified data, it is determined that the hybrid circuit is of good quality and all items are determined by the program. In addition to the automatic and manual measurement in sequence, the measurement speed is very fast and the data can be easily stored in connection with the printer device, so that a large amount of hybrid circuits can be precisely measured in a short time to select only high quality products. It is an object of the invention.

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

Each latch buffer circuit (1) (7) (23), three-state buffer circuit (17) (19), and a division circuit are provided to a computer (24) to which a program for controlling all devices is provided as shown in FIG. A transistor Q ₁ -Q ₂ connected to the display device 21 so that data exchange is possible via the 22, and the latch buffer circuit 7 drives the relays RL _1- RL ₂ to have necessary measurement conditions. ) And the other latch buffer circuit 1 is connected to the D / A converter 2 and its output is connected to the signal generator 4 via the buffer circuit 3 while the hybrid circuit ( 6) is connected to the multiplex 8 through the relay switch (SW ₁ -SW ₂ ) and the amplifier (OP ₃ -OP ₆ ) which are contacted by the driving of the relay (RL _1- RL ₂ ) and at the same time resistance (R). ₅₎ and a capacitor (C ₃₎ and a via connected to the signal generator 4, also to ensure via the peak detector 5 and the amplifier (OP ₂₎ connected to the computer 24 increases Group (OP ₄₎ hanpeon A / D converter 13, and the peak multiplex 8, which voltage is applied is connected to the computer 24 via the peak detector 10 (11) and the amplifier (OP), ₆₎ the Connect the detectors 10 and 1l, respectively, and output the data values thereof through the latch buffer circuit 15 and the 3-state buffer circuit 17 to the condenser 24, the splitting circuit 22, and the printer interface circuit 20. Is applied to the data bus.

The above configuration will be described for each measurement item.

First, in order to measure each item is operated according to the automatic and manual switch (SW ₄ ) selection of the operation unit 14, in the present invention will be described for the case of automatic measurement for convenience.

That is, when the automatic switch SW ₄ is connected to the on state, all the latch buffer circuits 1, 7, 19, 23 and the 3-state buffer circuit 17 (in accordance with the program of the computer 24) are connected. An enable signal is applied to 19 to sequentially measure each item.

In this situation, after 24.7V is applied to the power supply (Vcc) terminal of the hybrid circuit 6, a signal from the latch buffer circuit 7 is applied to test the voltage measurement items output from the b, c, d, e, and g terminals. applied to the base of the output transistor (Q ₁₎ and said transistor (Q ₁₎ is conductive, and therefore, by the relay (RL ₁₎ thereby driving "on" the relay switch (SW _1).

At this time, since the voltage of 24.7V output from the power supply unit 9 is input to the power supply Vcc terminal of the hybrid circuit 6 through the relay switch SW ₁ , the voltages output from the b, d, and g terminals are directly multiplexed ( 8, and the voltages of the c and g terminals are appropriately attenuated by the amplifier OP ₅ and OP ₄ and then input to the multiplex 8.

The multiplex 8 receives the command of the latch buffer circuit 7 to sequentially transfer the voltage output from the multiple terminals of the hybrid circuit 6 to the A / D converter 13 to be output from the hybrid circuit 6. The voltage, that is, the analog signal, is converted into a digital signal that can be read by the computer 24, and then transferred to the data bus DATA BUS of the computer 24 via the latch buffer circuit 15 and the 3-state buffer circuit 17.

Therefore, the computer 24 reads the data and separates the signal from the division circuit 22 step by step in order to display the voltage value to the outside and applies it to the display device 21 to supply the power Vcc of the hybrid circuit 6. However, when 24.7V is input, the voltages outputted to the terminals b, c, d, e, and g are sequentially displayed numerically on the display device 21, wherein the output voltage values of the respective terminals are respectively displayed. If it is within the set reference range, it is determined that normal operation can be performed.

Next, as a sensing frequency measurement item, 50 Hz is applied to the b terminal of the hybrid circuit 6 and the frequency when the trigger pulse is output from the a terminal is measured. That is, when 24.7 V is applied to the power supply Vcc terminal of the hybrid circuit 6, a signal is input from the latch buffer circuit 7 to the transistor Q ₂ and brought into a conductive state, thereby bringing the relay RL ₂ into a conductive state. Drive to connect the relay switch SW ₂ to the ON state, and at the same time, data is applied to the D / A converter 2 from another latch buffer circuit 1, and the digital signal is converted into an analog signal and buffered. The 50 kV voltage, sent to the signal generator 4 via the circuit 3 and converted into an analog signal, removes the noise component by the capacitor C ₃ , and then the terminal b of the hybrid circuit 6 via the resistor R ₅ . Is applied to.

At this time, the trigger pulse is output from the terminal a. The signal is converted into a frequency of 50 kHz by the signal generator 4 and input to the computer 24. Thus, the frequency value is read out and displayed on the display device 21. The measured frequency value is 250-340 kHz. If the value is within the range of the reference setting range, it is determined that the hybrid circuit 6 is of good quality.

Next, as described above, when the voltage of 24.7V and 50 kV is applied to the hybrid circuit 6 as the voltage measurement item of the trigger pulse in the sensing frequency measurement, the trigger pulse is output from the terminal a. ) Detects peak and peak voltages of the highest and lowest voltages and sends them to the multiplex 8, and their output is input to the A / D converter 13 again.

Therefore, the peak voltage is converted into a digital new circuit and data is transmitted to the computer 24 through the buffer circuit 15 and the 3-state buffer circuit 17 as described above. Will appear.

Therefore, the displayed voltage is expressed in two ways, the upper limit value and the lower limit value. When the upper limit voltage is 2.2-2.7 Vdc and the lower limit voltage is 0 Vdc, it is determined that the hybrid circuit 6 is of good quality.

Next, as the suicide time measurement item, the time at which the trigger pulse is output from the moment when the voltage of 24.7V and 50 kV is applied to the hybrid circuit 6 is measured. That is, the trigger pulse output from the terminal a of the hybrid circuit 6 is applied to the amplifier OP ₂ and amplified by a predetermined ratio, and then input to the computer 24. The amplifier OP ₂ is installed in the built-in counter device of the computer 24. The time from when the initial power and voltage are applied until the trigger pulse is output is displayed on the display unit 21.If the time, that is, the trigger pulse is output within 0.5-10.5Sec, it is regarded as normal operation. To be a good quality hybrid circuit (6).

The following items are used to measure the output frequency of the self-oscillating circuit built in the hybrid circuit 6 and the upper and lower voltage values of the output frequency. The frequency is input to the amplifier (OP ₆ ), the amplification process is sent to the computer 24, and read it, the frequency value is displayed on the display device 21 at the same time as the peak detector 10, 11 is forced to the upper limit And detecting the peak voltage of the lower limit value and outputting the peak voltage to the A / D converter 13 to convert the data of the upper and lower limit voltages into digital values that the computer 24 can read. The data is transmitted to the data bus via the state buffer circuit 17 to the computer 24, and the value thereof is read out and displayed on the display device 2l.

Therefore, when the measured value, that is, the output frequency of the oscillation circuit and the upper and lower voltage values are within the reference range, it is determined that the hybrid circuit 6 is of good quality.

The following is a measurement of proximity and self-paralysis paralysis voltage. Check that the trigger pulse is output from the terminal a while the power supply of 24.7V and the voltage of 50 kW are applied to the hybrid circuit 6, and the relay switch SW ₂ is turned off ( off), the trigger pulse disappears and the d-terminal output voltage is measured. That is, the trigger signal is output from the terminal a when all conditions are applied to the hybrid circuit 6.

At this time, when the latch buffer circuit to block the signal of the release is applied to the base of the transistor (Q ₂₎ (7) operation of the transistor (Q ₂₎ is stopped thus the relay (RL ₂₎ is does not operate standing relay switch (SW ₂ ) Is "off".

Therefore, the voltage of the terminal d is applied to the multiplex 8, and its output is sent to the A / D converter 13, converted into a digital signal, and then transmitted to the computer 6 through each circuit as described above. When the trigger pulse is extinguished, the voltage is displayed on the display device 21. When the measured value is 0.8-1.0V, the voltage falls within the reference setting range, so that it can be determined that the hybrid circuit 6 is of good quality.

On the other hand, when the printer enable switch SW ₃ is connected to the on state, the printer device 16 is operated by the computer 24 and the printer interface circuit 20 to record data values of all measurement items, and to record and record the measured values. It is possible to store and to measure the hybrid circuit 6 is inserted into the package (Package) to facilitate the exchange of the measured hybrid circuit 6 is easy to measure a large amount of hybrid circuit 6 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 24 and giving conditions suitable for the measurement in order to measure the hybrid circuit 6 used for the shell time fuse. Each item can be measured automatically and manually, and the large amount of hybrid circuits 6 can be measured quickly and accurately to select only high quality products, as well as recording the measured values by the printer interface circuit 20 to permanently record the data. It is a device that can be preserved.

Claims (1)

A computer 24, to which a program for controlling all devices is assigned, is displayed via each latch buffer circuit (1) (7) (23), three-state buffer circuit (17) (19), and a division circuit (22). A multiplexer and a transistor Q ₁ -Q ₂ are connected to the device 21 to enable data exchange, and the latch buffer circuit 7 drives the relays RL _1- RL ₂ to have the necessary measurement conditions. (8), the other latch buffer circuit (1) is connected to the D / A converter (2), the output of which is connected to the signal generator (4) via the buffer circuit (3) while the relay to the hybrid circuit (6) The resistor (R ₅ ) and the capacitor are connected to the multiplex (8) through the relay switch (SW ₁ -SW ₂ ) and the amplifier (OP ₃ -OP ₅ ) which are contacted by driving (RL _1- RL ₂ ). applied to the amplifier (OP ₆₎ to be connected to a computer (24) (C ₃₎ and connecting the overlapped signal generator 4, also via a peak detector (5) and amplifier (OP ₂₎ The voltage is the peak detector 10 (11) and amplifier The A / D converter 13, the multiplexed 8 and the peak detector 10 (11) to be connected to the computer 24 via the (OP ₄₎ Respectively, but the output data values are applied to the data buses of the computer 24, the splitter circuit 22, and the printer interface circuit 20 through the latch buffer circuit 15 and the 3-state buffer circuit 17. Characterized in that the hybrid IC (hybrid IC) measuring device of the shell proximity fuse.

Images