JP4658031B2 - Relay test equipment - Google Patents

Description

  The present invention relates to a relay test apparatus for performing a characteristic test of various relays having different characteristics.

  For example, a relay test apparatus for a vehicle needs to perform a characteristic test on various relays having different characteristics such as operating voltage and circuit configuration.

  In conventional vehicle relay test equipment, the operator of the test equipment recognizes the operating voltage and circuit configuration from the model name of the relay under test and manually sets it to meet the conditions. A setting error such as making a determination error, wrong setting of the operating voltage, or incorrect selection of the circuit configuration may occur. In such a case, such a setting error may occur. When DC 100V is applied, there is a disadvantage that the relay under test may be burned out.

  On the other hand, for example, Patent Document 1 discloses that, in an electric device such as a mobile phone, the operation of the electric device is improved by using a two-dimensional code.

JP 2004-145525 A (3rd page, FIG. 1)

  An object of the present invention is to eliminate accidents at the same time as improving the efficiency of operation in testing of a relay test apparatus.

The relay test apparatus according to the present invention includes an information reading unit that reads information recording information relating to the circuit configuration and characteristics of the relay under test attached to the relay under test;
A circuit switching unit having a plurality of relays;
A measuring unit connected to the circuit switching unit and provided with a measuring instrument for measuring the output of the relay under test;
A test voltage setting unit including a coil power source connected to the circuit switching unit and configured to supply a coil voltage of the relay under test;
The information reading unit is instructed to read information from the information reading unit, the test condition of the relay under test is determined based on the information of the information reading unit, and the test circuit of the circuit switching unit is configured, and the coil A measurement control unit for operating the power supply voltage to determine the quality of the relay under test from the measurement result of the measurement unit;
It is equipped with.

  It is possible to eliminate the type identification error and test condition setting error of the relay under test, thereby eliminating accidents such as burnout and improving the efficiency of the test.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a first embodiment of a relay test apparatus according to the present invention, and FIG. 2 shows a circuit configuration for explaining the operation of the first embodiment of the relay test apparatus according to the present invention. FIG. 3 is a table showing an example of information recorded in a two-dimensional code (for example, QR code) which is an information recording unit used in the present invention, and FIG. 4 shows information in the two-dimensional code. FIG. 5 is a diagram showing an example of the pin arrangement of the relay under test, and FIG. 6 is a process flow of the measurement control unit in the relay test apparatus according to the present invention. It is a flowchart which shows. In the first embodiment, a vehicle relay test apparatus will be described as an example.

  As shown in FIG. 1, the relay test apparatus according to the present invention includes a measurement control unit 1 that controls the control process of the test apparatus, and a code reading unit that is an information reading unit that reads information on a two-dimensional code attached to the relay under test. 2, a circuit switching unit 3 that switches a test circuit according to an instruction from the measurement control unit 1, a measurement unit 4 that reads a measurement value at the time of test execution according to an instruction from the measurement control unit 1, and a test voltage according to an instruction from the measurement control unit 1 A test voltage setting unit 5 for outputting is provided.

  As shown in FIG. 2, the circuit switching unit 3 includes a plurality of relays 31, 32, 33a to 33i. The relay selects and connects one of the relay 31 for connecting the measuring device 47, the relay 32 for connecting the coil power source and the relay under test, and the coil power source and the operation detection circuit 41 to the operation detection circuit 46. The selection circuits 33a to 33i are connected to each other, and the outputs of the selection circuits 33a to 33i are connected to one pin of the relay under test. Therefore, although not shown, 11 sets of selection circuits are prepared in total. The measuring unit 4 includes operation detection circuits 41 to 46 and a measuring instrument group 47 such as a resistance meter and a voltmeter. The operation detection circuits 41 to 46 are circuits that output “1” when the input terminals of “+” and “−” are short-circuited and output “0” when they are opened. The test voltage setting unit 5 includes a coil power supply 51.

  Next, a case where an 11-pin relay is a test target will be described in the first embodiment. For example, a relay having a pin arrangement as shown in FIGS. 4A, 4B, and 4C exists in the 11-pin relay. Further, the relays having the pin arrangements shown in FIGS. 4A, 4B, and 4C have various types of operation voltages such as DC 100V, 50V, 36V, 24V, and 12V and AC 200V, 100V, and 50V, respectively. Exists.

  As shown in FIG. 3, the two-dimensional code includes, for example, a relay model name 101, a rated operating voltage 102, a coil resistance value 103, a coil resistance value allowable value 104, an operating voltage reference value 105, and an open voltage. Reference value 106, coil + pole pin number 107, coil-pole pin number 108, pole 1-a contact pin number 109, pole 1-b contact pin number 110, pole 1-c contact pin number 111 , Pole 2-a contact pin number 112, pole 2-b contact pin number 113, pole 2-c contact pin number 114, pole 3-a contact pin number 115, pole 3-b contact pin number 116 And the pin number 117 of the pole 3-c contact, and information on these two-dimensional codes is attached to the relay under test.

Next, the operation will be described based on the flowchart of FIG.
First, the measurement control unit 1 instructs the code reading unit 2 to read the information of the two-dimensional code attached to the relay under test (S1).

Next, the measurement control unit 1 determines the read characteristic / circuit configuration information regarding the relay under test, and outputs an instruction to the circuit switching unit 3. From the information shown in FIG. 3, since pin number 1 is a coil + pole (positive electrode), a command to turn ON relay 33i is output to the selection circuit of pin number 1, and pin number 2 is a contact point 1-a. The pin number 2 selection circuit outputs a command to turn on the relay 33a, and the pin number 3 is a pole 2-a contact, so the pin number 3 selection circuit outputs a command to turn on the relay 33c. Since the pin number 4 is a pole 1-b contact, a command to turn on the relay 33b is output to the pin number 4 selection circuit, and the pin number 5 is a pole 1-c contact, so the pin number 5 selection circuit Command for turning on the relay 33g is output, and the pin number 6 is a contact of the pole 2-c. Therefore, a command for turning on the relay 33g is output to the selection circuit of the pin number 6, and the pin number 7 is set to the pole. Since it is 3-c contact, the selected number of pin number 7 Is output a command to turn on the relay 33g, and the pin number 8 is the pole 3-b contact, so a command to turn on the relay 33f is output to the selection circuit of the pin number 8, and the pin number 9 is the pole Since it is a 2-b contact, it outputs a command to turn on the relay 33d for the selection circuit of pin number 9, and since the pin number 10 is a pole 3-a contact, the relay 33e is turned on for the selection circuit of pin number 10. Since the pin number 11 is a coil-pole (negative electrode), a command to turn on the relay 33h is output to the selection circuit of the pin number 11 (S2).
As described above, the test circuit of FIG. 4 is configured by operating the circuit switching unit 3.

When the configuration of the test circuit is completed, the next step is a characteristic test.
The characteristic test shall be performed in the order of coil resistance measurement, operating voltage measurement, and open-circuit voltage measurement.
First, the measurement control unit 1 instructs the circuit switching unit 3 to turn on the relay 31, connect an ohmmeter, read the measured value from the ohmmeter (S3), and the measured value is within the allowable value of the coil resistance (this (± 10% in the embodiment), it is determined that the product is non-defective and exceeds the allowable value. For example, it is determined whether the allowable value is doubled (for example, 20% in the case of the present embodiment where the allowable value is 10%). Determine (S4). If the double allowable value is exceeded, it is judged as abnormal, and the test is terminated without performing the next characteristic test.

Next, the measurement control unit 1 instructs the circuit switching unit 3 to turn on the relay 31 and the relay 32, operate the voltage of the coil power supply 51, and gradually increase from the low voltage toward the rated voltage 102, While increasing the output voltage of the coil power supply 51, the output states of the operation detection circuits 41 to 46 are monitored, and the outputs of the operation detection circuits 42, 44, 46 of all the a contacts are “1”, and the operations of all the b contacts are performed. The output voltage of the coil power supply 51 when the outputs of the detection circuits 41, 43, 45 become “0” is read from the measuring device 47, and it is determined whether the operating voltage is 105 or less in FIG. 3 (S5). Next, the output voltage of the coil power supply 51 is gradually decreased toward 0V. While the coil power supply 51 is decreased, the output states of the operation detection circuits 41 to 46 are monitored. The outputs of the operation detection circuits 42, 44, 46 for all the a contacts are “0”, and the operation detection circuits 41 for all the b contacts are detected. , 43, and 45, the voltage of the coil power supply 51 when the output becomes “1” is read from the measuring device 47 to determine whether it is equal to or lower than the open circuit voltage 106 of FIG. 3 (S6).
By operating as described above, a relay characteristic test is achieved.

In the first embodiment, information relating to the circuit configuration and characteristics of the relay under test is recorded in a two-dimensional code, and the recorded information is read by the code reading unit 2.
An electronic tag (IC tag) that is an information reading unit instead of a two-dimensional code is attached to the relay to be tested, and an IC tag reading unit that is an information reading unit is provided in the test apparatus instead of the code reading unit 2. Similar to the two-dimensional code, the same effect can be obtained by recording information on the circuit configuration and characteristics and reading the information of the IC tag.

  As described above, according to the relay test apparatus according to the present invention, since the test of the relay under test can be automatically performed, the type identification error of the relay under test and the test condition setting error can be eliminated, and accidents such as burnout are eliminated. And increase the efficiency of the test.

  Further, by stopping the test when the coil resistance value exceeds a predetermined value, it is possible to prevent burnout or the like even when there is an error in attaching the dimension code to the relay under test.

  In the above-described embodiment, the characteristic test is limited to the coil resistance measurement, the operation test, and the open test. However, the characteristic test is extended to the insulation resistance measurement, the withstand voltage measurement, the contact resistance measurement, and the time limit operation measurement. Needless to say, it can be applied. In the first embodiment, the vehicle relay has been described as an example. However, the first embodiment can be applied to a relay for other purposes.

  INDUSTRIAL APPLICABILITY The present invention can be effectively used for automatically performing a characteristic test of various relays having different characteristics such as those for vehicles.

It is a block diagram which shows Embodiment 1 of the relay test apparatus which concerns on this invention. It is a circuit diagram which shows the circuit structure for demonstrating operation | movement of Embodiment 1 of the relay testing apparatus based on this invention. It is a table | surface which shows the example of the information recorded on the two-dimensional code used by this invention. This is a test circuit configured when information is recorded in a two-dimensional code. It is a figure which shows the example of pin arrangement | positioning of a to-be-tested relay. It is a flowchart which shows the flow of a process of the measurement control part in the relay testing apparatus which concerns on this invention.

Explanation of symbols

1 measurement control unit, 2 code reading unit (information reading unit), 3 circuit switching unit, 4 measuring unit,
5 Test voltage setting unit, 31, 32, 33a to 33i relay,
41-46 motion detection circuit, 47 measuring instrument, 51 coil power supply,
101-117 Two-dimensional code (information recording part).

Claims (5)

An information reading unit for reading information recording information relating to the circuit configuration and characteristics of the relay under test affixed to the relay under test;
A circuit switching unit having a plurality of relays;
A measuring unit connected to the circuit switching unit and provided with a measuring instrument for measuring the output of the relay under test;
A test voltage setting unit including a coil power source connected to the circuit switching unit and configured to supply a coil voltage of the relay under test;
The information reading unit is instructed to read information from the information reading unit, the test condition of the relay under test is determined based on the information of the information reading unit, and the test circuit of the circuit switching unit is configured, and the coil A measurement control unit for operating the power supply voltage to determine the quality of the relay under test from the measurement result of the measurement unit;
Relay test equipment with The relay test apparatus according to claim 1, wherein the test is stopped when a measured value of the coil resistance in the measurement unit deviates from an information value of the information reading unit by a predetermined value or more. The relay test apparatus according to claim 1, wherein the measuring unit measures a test operation of the relay under test and a coil resistance of the relay under test. The relay test apparatus according to claim 1, wherein the measurement unit measures an insulation resistance, a withstand voltage, or a contact resistance of the relay under test. The relay test apparatus according to claim 1, wherein the information reading unit is a two-dimensional code or an IC tag.

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