JPS5912631Y2 - Wire check device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device that can check wiring by efficiently measuring the impedance of electrical components after connection and wiring.

For test objects containing a group of electrical components such as resistors and capacitors connected in series or in parallel, it is necessary to check the wiring after connecting all components and before turning on the power.

Conventionally, each component was connected individually or in multiple pieces.
It was only a simple continuity test using a DC resistance measuring rod.

Therefore, it is possible to judge the quality of the resistance element and its connection status, but if a capacitor, inductance, rectifier element, etc. is connected between the terminals to be measured, it is difficult to check that the parts are connected correctly. However, it was only possible to check whether a short circuit had occurred or not.

SUMMARY OF THE INVENTION An object of the present invention is to improve the above-mentioned drawbacks, and to provide a device that can sequentially measure the two-terminal impedance of a single electric component or a group of connected electric components, and easily check the wiring.

Embodiments of the present invention shown in the drawings will be described below.

In the drawing, TB is a test object with a resistor R. −
A large number of component groups are wired, each including a sensor C, a diode D, etc. connected in series or in parallel.

TMI, TM2,...TMn are connection terminals pulled out from both ends of each of the above components or from one end of a component and the component connection point in the case of a group of components, and are usually power supply terminals. , and connect the predetermined connection wire group WR from the terminal selector TSL to the terminal board PLT including the power supply terminal (when checking the wiring, of course, do not apply power to each component. .

) Select two terminals in advance for a single component or a group of components to be tested, and for example, in the case of a series connection of RC, for each terminal, the terminal selector TSL connects it to the measurement terminal of the impedance measuring device IPM at a predetermined time. .

The impedance measuring device IPM is a well-known device that measures the two-terminal impedance of a single component or a group of components via a terminal selector TSL, and applies the measured value to the comparator CMP.

On the other hand, the control unit CTL has the terminals TMI, TM2, . . .
. . . Regarding TMn, the selection operation of the terminal selector TSL and the read operation of the temporary storage unit DM are controlled so as to correspond to each other.

The data storage unit DM measures in advance how many ohms the two-terminal impedance of the terminal TMI, etc. is in a normal state when measured by the impedance measuring device IPM, or calculates and stores the results. are memorized in sequence.

The control unit CTL sequentially selects the terminal selector TSL to newly measure the impedance, and also controls the operation of reading from the data storage unit DM, so the comparator CMP compares both terminals, and the determination unit DCS If they match within a predetermined error range, it is judged as good, and if they do not match, it is judged as bad, and the judgment is notified to the control unit CTL.

The control unit CTL selects the next terminal, measures the impedance, and compares and determines the impedance in the same manner as the previous time.

Note that the judgment results are printed out or displayed.

Therefore, for the terminals TMI, TM2, .

In addition, for parts that are not connected to the power supply terminal, a predetermined number of auxiliary connection lines TWR are pulled out from the terminal selector TSL,
It is also possible to determine the desired two terminals and measure the impedance by attaching a clip CLP to the tip and making a temporary connection to the component.

In this way, according to the present invention, two-terminal impedance to alternating current can be easily measured for test objects that include components that are complexly connected, including capacitors and coils, and whose condition cannot be adequately checked by simply measuring resistance to direct current. Since the measurement is carried out quickly and quickly, the connection state of a single component or a group of components, or the presence or absence of a short circuit between them can be immediately determined, making wiring checks extremely easy.

[Brief explanation of the drawing]

The drawing is a schematic diagram showing an embodiment of the present invention. TB...Test object, TMI, TM2,...
...TMn...terminal, TSL...terminal selector, IPM...impedance measuring device, C
MP...Comparator, CTL...Control unit,
DM...Taiyo Storage Department, DCS...
Judgment section, WR... Connection line group, TWR...
・Auxiliary connection line, CLP...Clip.

Claims (1)

[Scope of utility model registration request] For a group of connection wires pulled out from a connection point where a single electrical component or multiple electrical components are connected, select the terminals of the connection wires.
a device for measuring terminal impedance; a device for storing connection line terminal numbers and impedance values in advance and sequentially reading out the impedances in response to the terminal selection; a device for measuring the two-terminal impedance; and a device for reading out the impedance. A wiring check device comprising: a device for comparing each output value of the device; and a device for comparing each output value of the device.