KR100363267B1 - Coil transformer turns and short inspection device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for checking the number of turns and shorts of a coil transformer. The present invention relates to a method for checking a short with a neighboring channel using an analog multiplexer IC. When a signal is input from the next channel while applying, it is regarded as short and the lamp corresponding to the two channels is turned on to inform the outside

Recognize the value corresponding to the margin of error from the normal value of the sample to be tested.If the value of the sample to be examined is within the margin of error, the value is displayed as normal.

After connecting the samples to be tested to each channel and turning on the teaching switch, the values of all channels are read and stored in memory so that the sample values can be set automatically.

Description

Coil transformer turns and short inspection device {omitted}

The present invention relates to the number of coil transformer turns and short inspection apparatus, and in particular, whether or not up to 10 channels of the coil transformer is in a short state, and a data setting function for storing a voltage value by a sample in a memory and a manual operation by a key. Equipped with an error tolerance function that displays the setting function and the value within the error range as an accurate value, eliminating the inconvenience of users inputting data one by one, as well as the number of turns and shorts of the coil transformer for convenient inspection. Relates to a device.

In general, the coil transformer is composed of a rotor and a stator, and they are provided with a plurality of channels facing each other, and it is well known that each channel is obtained by winding a coil.

Such coil transformers should be used only by checking the inductance value of each channel, the presence of disconnection and the start final change and the number of turns to determine whether there are any defects.

Conventionally, the relative comparison was measured by fixing one of the good rotors / stators and combining them so as to face each other while keeping the stator / rotors to be inspected at a constant gap, using the inductance prometer.

However, since the inductance value of each channel of the stator or rotor, which is the inspection object, is induced and measured, it is difficult to accurately adjust the center when combined on the opposite surface.In case of a bad decision, which channel changes the inductance value and is bad. Not shown.

Therefore, in order to analyze the cause of defects, the measurement time was delayed due to manual measurement and finding the cause of defects.

In addition, only the rotor of the coil transformer is provided with a short ring for blocking interference between the channels, when the short ring is shorted with the lead wires of the respective channels there is no blocking effect. However, the conventional measuring method was unable to determine the presence or absence of a short because the shorting of the short ring and the leader line was induced and the inductance value thereof was not measured.

Therefore, Korean Patent Registration No. 12282 (apparatus and method for testing the characteristics of a rotary transformer) has been proposed.

That is, the test table on which the coil transformer is placed,

A matrix switch connected to each channel of the coil transformer one-to-one with an input and an output terminal,

LCR meter for measuring the inductance value of each channel through the matrix switch,

By selecting the channel to measure by combining the matrix switch, the inductance value of the selected channel is measured by LCR meta, and the measured value is compared with the reference inductance value and composed of computers that display the comparison value on the monitor. When the elevator is moved in the left and right directions in the drawing, the input and output terminals and the test terminals of each channel are connected and shorted, so that the necessary channels can be turned ON / OFF by combining the matrix switch with a computer.

Mount the coil transformer in the right position on the holder on the left and right of the inspection table.

Move the lift to the left to connect the inspection step to the input and output terminals and the short ring of the channel 1 to channel n of the coil transformer,

Combining the coil transformer, turn on only the output terminal of channel 1 and the input terminal of channel 2, and measure the inductance value between the input and output terminals of these two channels with LCR meta, compare it with the reference inductance value, and then compare the value with the monitor. Display,

Combining the matrix switch, turn off the output terminal of channel 1 and the input terminal of channel 2, turn on only the output terminal of channel 2 and the input terminal of channel 3, and then convert the inductance values between the input and output terminals of these two channels into Measure and compare with the reference inductance value and display the comparison value on the monitor.

Combining the matrix switch, turn off the output terminal of channel 2 and the input terminal of channel 3, turn on the output terminal of channel 3 and the input terminal of channel n, and then convert the inductance values between the input and output terminals of these two channels into LCR meta. Measure and compare with the reference inductance value and display the comparison value on the monitor.

Combining a matrix switch turns off the output terminal of channel 3 and the input terminal of channel n, and turns on only the output terminal of channel n and the input terminal of channel 1, and then converts the inductance values between the input and output terminals of these two channels into LCR meta. Measure and compare with the reference inductance value and display the comparison value on the monitor.

Combining matrix switches turns off the output and input terminals of the channel n and channel 1, and turns on the output and input terminals of the corresponding channels.

The inductance value between the input and output terminals of the channel 1 and the channel n is measured by LCR meta, and the comparison value compared with the reference inductance value is displayed on a monitor.

The inductance value between the input terminal of the channel 1 or the output terminal of the channel n and the short ring was measured by LCR meta, and compared with the reference inductance value, and the comparison value was displayed on the monitor.

However, in the conventional rotary transformer characteristic inspection apparatus and method, it is cumbersome to set each operation necessary for inspection by turning on / off a switch, and inputs a value that is a reference value of a preset value in advance. There was a lot of inconvenience to use.

The present invention for solving the above-described conventional problem is whether or not up to 10 channels of the coil transformer is in a short state, the data setting function for storing the voltage value by the sample in the memory and the manual setting function by the key And the error tolerance function that displays the value within the error range as an accurate value, eliminating the inconvenience of the user inputting data one by one, as well as the turn and short inspection device of the coil transformer, which makes the inspection convenient. The purpose is to provide.

In order to achieve the above object, the coil transformer turns and short inspection device outputs a control signal for switching on a channel to which a signal is applied when inspecting a short with a neighboring channel using an analog multiplexer IC. After the signal is applied, if a signal is input from the next channel, it is regarded as short and the lamp corresponding to the two channels is turned on to inform the outside.

Recognize the value corresponding to the margin of error from the normal value of the sample to be tested.If the value of the sample to be examined is within the margin of error, the value is displayed as normal.

After connecting the samples to be tested to each channel and turning on the teaching switch, the values of all channels are read and stored in memory so that the sample values can be set automatically.

1 is a schematic diagram showing an overall configuration according to an embodiment of the present invention.

2 is a detailed circuit diagram showing an operating state according to an embodiment of the present invention.

3 is a front view showing the front configuration according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: microprocessor 8: analog multiplexer IC

9: Short detecting part 12: Voltage detecting part

13 operation unit 14 comparison unit

15: FND drive unit 17: memory

Hereinafter, the present invention will be described in detail with reference to Examples.

Figure 1 schematically shows the overall configuration of the present invention,

Turn measurement range setting key (2), measurement range storage key (3), power supply and turn-down down correction key (4), turn-up upward correction key (5), FND / turn measurement key (6) and auto setup key (7) When receiving the user's options through the microprocessor for controlling the internal operation (1),

An analog multiplexer IC (8) for applying a signal to one side of each channel by a control signal from the microprocessor (1);

A short detector 9 for determining whether a signal is introduced through one side of the analog multiplexer IC 8 and another channel;

A buzzer 10 for generating an alarm sound through the speaker 11 under the control of the microprocessor 1 receiving the detection result of the short detection unit 9;

A voltage detector 12 detecting a voltage value induced on the other side of the channel while being controlled by the microprocessor 1;

An operation unit 13 for calculating the number of turns of each channel based on the detection result of the voltage detector 12 and the voltage value applied to the primary side;

A comparison unit 14 for determining whether the number of turns obtained by the calculation result of the calculation unit 13 falls within a tolerance range, and

When the comparison result of the comparison unit 14 corresponds to the tolerance range, the FND driving unit 15 displays 100% of the tolerance value and displays the percentage of the measured value on the display unit 16 when it is out of the tolerance range.

The memory 17 stores and outputs a reference value of the number of turns corresponding to each channel set by the user and a reference value of the number of turns of each channel measured for the first time.

The turn and short inspection apparatus of the coil transformer of the present invention configured as described above has a turn count measurement range setting key 2, a measurement range memory key 3, a power supply and a turn count down correction key 4, a turn count upward correction key 5, The microprocessor (1) receiving the user's option through the FND / turn count measurement key (6) and the automatic setting key (7) controls the number of turns and the short of the coil transformer while controlling the internal operation. ,

When the user turns on the number of turn measurement range setting keys 2 provided once for each of the channels CH1 to CH10, the FND driver 15 recognizes that the upper limit value of the number of turns is selected by the microprocessor 1 that recognizes this. 5% is displayed on the display unit 16 through.

In this state, if the user turns on the turn measurement range setting key 2 once, the microprocessor 1 which recognizes this turns down 4%, 3%, 2%, and 1%, which adjusts the turn measurement range downward by 1%. If the user turns on the measurement range memory key 3, the measurement range of the number of turns is set by setting the measurement range of the currently selected number of turns to the tolerance range and then storing it in the memory 17.

The number of turns down by one from the reference value of the number of turns to be measured each time the user turns on the power and the number of turn down correction keys 4 and the number of turns up correction key 5 provided once for each of the channels CH1 to CH10. By displaying or by displaying the number of turns up by one, the reference value of the number of turns can be corrected and set.

When the power and turn-down down correction key 4 is turned on for about 3 seconds, it is determined that the microprocessor 1 recognizes the measurement of the corresponding channel and turns on the lamp of the display unit 16 sequentially. Determine whether or not.

When the FND / turn count measuring key 6 located only in the first channel CH1 is turned on, the measurement operation is performed to check whether the turn count is defective or not.

When the automatic setting key 7 provided only in the last channel CH10 is turned on, the voltage detection unit 12 under the control of the microprocessor 1 detects a voltage value induced on the other side of each channel of the currently connected coil transformer. The voltage value is transferred to the calculating section 13, and the number of turns of each channel is calculated by comparing with the voltage value applied to the primary side, and stored in the memory 17 as a reference value.

The process of checking the presence or absence of a short by the power and the turn-down down correction key 4 is performed by the control signal of the microprocessor 1 from the first channel CH1 to the last channel CH10 as shown in FIG. 2. The signal of the short sensing unit 9 is applied to one side of the first channel CH1 while being sequentially supplied to the analog multiplexer IC 8 connected to one side of the signal, thereby recognizing the signal on the next channel CH2. When the two channels are regarded as shorted, the lamp indicating the short status of the two channels is turned on, and at the same time, the alarm sound of the buzzer 10 sounds.

When the short check of the first channel CH1 is completed, the short test of the next second channel CH2, the third channel CH3, and the last channel CH10 is checked.

In the process of measuring the number of turns at the same time as the short test, the microprocessor 1 reads the reference value of the number of turns by the user setting or the automatic setting from the memory 17 in the microprocessor 1, and then, through the voltage detector 12, reads the reference value. The voltage value induced on the other side of the channel is detected.

The number of turns of all channels is calculated by calculating the number of turns corresponding to the detection result of the voltage detector 12 by the voltage value applied to the primary side.

After determining whether the number of turns obtained by the operation result of the calculating unit 13 corresponds to the tolerance range, the comparator 14 determines whether the turn number is within the tolerance range and displays 100% when the deviation is within the tolerance range. The percentage of the measured value is displayed on the display unit 16 by simply controlling the FND driver 15.

Therefore, according to the turn count and the short inspection apparatus of the coil transformer of the present invention, when a short is inspected, a control signal for turning on a channel to which a signal is applied is output, and then a signal is input when a signal is input from the next channel. The lamp corresponding to the two channels is turned on to inform the outside,

Recognize the value of the margin of error from the normal value of the sample to be tested.If the value of the sample to be examined is within the margin of error, indicate that it is normal.

When the teaching switch is turned on, all channel values are read as voltage values and stored in memory for display so that sample values can be set automatically.

Claims (4)

Turn measurement range setting key (2), measurement range storage key (3), power supply and turn-down down correction key (4), turn-up upward correction key (5), FND / turn measurement key (6) and auto setup key (7) When receiving the user's options through the microprocessor for controlling the internal operation (1), An analog multiplexer IC (8) for applying a signal to one side of each channel by a control signal from the microprocessor (1); A short detector 9 for determining whether a signal is introduced through one side of the analog multiplexer IC 8 and another channel; A buzzer 10 for generating an alarm sound through the speaker 11 under the control of the microprocessor 1 receiving the detection result of the short detection unit 9; A voltage detector 12 detecting a voltage value induced on the other side of the channel while being controlled by the microprocessor 1; An operation unit 13 for calculating the number of turns of each channel based on the detection result of the voltage detector 12 and the voltage value applied to the primary side; A comparison unit 14 for determining whether the number of turns obtained by the calculation result of the calculation unit 13 falls within a tolerance range, and When the comparison result of the comparison unit 14 corresponds to the tolerance range, the FND driving unit 15 displays 100% of the tolerance value and displays the percentage of the measured value on the display unit 16 when it is out of the tolerance range. Turn count and short inspection of the coil transformer, characterized in that the memory is composed of the memory 17 for storing and outputting the reference value of the number of turns corresponding to each channel set by the user, or the first measured number of turns of each channel. Device. The microprocessor (1) according to claim 1, wherein the microprocessor (1) recognizes this when the user turns on the turn number measuring range setting key (2) provided once for each of the channels CH1 to CH10. ) And the upper limit of the number of turns Each time it is turned on one by one, the measured value of turn number is adjusted downward by 1%. When the user turns on the measurement range memory key (3), the coil transformer turns and short inspection apparatus for setting the measurement range of the currently selected number of turns to the tolerance range and to store in the memory (17). The reference value of the number of turns to be measured each time the user turns on the power and the number of turn down correction key 4 or the number of turns up correction key 5 provided once for each of the channels CH1 to CH10. A coil transformer turns and short inspection apparatus configured to correct and set a reference value of the number of turns by displaying the number of turns down by 1 or by displaying the number of turns up by 1. According to claim 1, When the automatic setting key (7) provided only in the last channel (CH10) is turned on the voltage detection unit under the control of the microprocessor (1) voltage value induced on the other side of each channel of the coil transformer currently connected ( 12), A coil transformer turns and short inspection device which transmits this voltage value to the calculating part (13) and calculates the number of turns of each channel in comparison with the voltage value applied to the primary side, and stores it in the memory (17) as a reference value.