CN115079764A - Automatic testing arrangement is verified to three-terminal adjustable integrated voltage regulator function - Google Patents
Automatic testing arrangement is verified to three-terminal adjustable integrated voltage regulator function Download PDFInfo
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- CN115079764A CN115079764A CN202210842323.XA CN202210842323A CN115079764A CN 115079764 A CN115079764 A CN 115079764A CN 202210842323 A CN202210842323 A CN 202210842323A CN 115079764 A CN115079764 A CN 115079764A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
Abstract
An automatic testing device for function verification of an integrated voltage stabilizer with three adjustable ends belongs to the field of testing of integrated voltage stabilizers. The method comprises the following steps: the device comprises a test circuit module, a test control module, a relay, a direct current power supply, a computer, a data access device, a voltage measuring device, a load assembly, test software, a device to be tested and a clamp device. The test circuit module is connected with the test control module through a relay, and the direct-current power supply is connected with the relay; the computer is connected with the test circuit module, the data access device and the voltage measuring device; the device to be tested is connected with the test circuit module through the clamp device and is connected with the load assembly through the clamp device; the voltage measuring device is connected with the device to be measured and the load assembly; the test software is arranged in the test control module and the computer and controls the relay switch and the computer to read and access data. The problem that the existing three-terminal adjustable integrated voltage stabilizer can only be verified by manual testing is solved. The method is suitable for verifying the direct current working stability of various three-terminal adjustable integrated voltage regulators.
Description
Technical Field
The invention belongs to the field of integrated voltage stabilizer testing, and further relates to the field of three-terminal adjustable integrated voltage stabilizer testing, in particular to an automatic testing device for function verification of a three-terminal adjustable integrated voltage stabilizer.
Background
The three-end adjustable integrated voltage stabilizer (hereinafter referred to as device) is a DC voltage stabilizing integrated circuit, and has three ports of input end VI, output end VO and adjusting end ADJ, and the device has various DC characteristic test devices, but can be used for high power (P) D > 50W) of the three-terminal regulator, the direct current working stability verification of the three-terminal regulator is concerned more. According to the requirements of the national corresponding device standard, the method for verifying the direct current working stability comprises the following steps: and applying an operating voltage of 35V to the input end VI to ensure that the voltage of the VO at the output end is 28V, the current flowing through the load is between 3A and 7A, and the duration is 5 minutes, wherein the output voltage is required to be always kept at 28V, and the device is not damaged. The test principle diagram is shown in fig. 1, wherein the resistor RL acts as a load, and the resistance of the resistor RL is changed to adjust the load current; the data read by the multimeter is output voltage; when the multimeter reading was always 28V, the device was normal. For the test, each manufacturer in China uses the existing single components of instruments and meters according to the standard requirements and the schematic diagram of fig. 1 to match the components for test verification, the whole test process is manually tested, whether the test result is qualified or not is judged and calculated manually, the workload is large, the test cost is high, the possibility of misjudgment exists, and the reliability of the test verification result is influenced.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problems that in the prior art, the test verification of the three-terminal adjustable integrated voltage stabilizer can only be verified by manual test, the test cost is high, and the test verification reliability and consistency are poor are solved.
Therefore, the invention provides an automatic testing device for function verification of a three-terminal adjustable integrated voltage regulator, as shown in fig. 2 to 4. The method comprises the following steps: the device comprises a test circuit module, a test control module, a relay, a direct current power supply, a computer, a data access device, a voltage measuring device, a load assembly, test software, a device to be tested and a clamp device.
The test circuit module is connected with the test control module through the relay, and the direct-current power supply is connected with the relay. The test circuit of the test circuit module is an existing test circuit.
The computer is connected with the test circuit module, the data access device and the voltage measuring device.
The device to be tested is connected with the test circuit module through the clamp device and is connected with the load assembly through the clamp device.
The voltage measuring device is connected with the device to be measured and the load assembly and is used for measuring the output voltage of the device to be measured after the load assembly is loaded.
The test software is arranged in the test control module and the computer and controls the relay switch and the computer to read and access data.
The invention is provided with a plurality of unit test circuit modules and a plurality of corresponding device clamp devices, and a plurality of device test units are connected in parallel and are arranged on a test board.
The operation mechanism of the invention is as follows:
the test control module controls the plurality of relays to be opened and closed in sequence through a manual test key, an automatic operation key and a reset key, the LED lamps are used as operation prompts, the numbers of the LED lamps correspond to the numbers of the plurality of relays respectively, and the LEDs are turned on to represent that the relays are closed.
When the direct current power supply is electrified, the running LED lamp is lightened; when a manual test key or an automatic operation key is pressed, the No. 1 LED lamp is lightened, and the No. 1 relay is closed. The differences between manual testing and automatic operation are:
and when the current relay is switched off, the next LED lamp is turned on, and the next relay is switched on at the same time, so that the purpose of switching the next relay to work is achieved. The automatic test is that every 5 minutes, the next relay is automatically switched to work.
In any process, when the reset key is pressed, the control module returns to the state that the No. 1 LED lamp lights the No. 1 relay to be closed.
When the relay is closed, a short-circuit signal is sent to the computer through the USB connecting line, and the computer starts to read and record data of the voltage measuring device.
And finally, the plurality of relays are respectively connected with the device testing seat, and the plurality of devices are sequentially switched by means of the relays to realize the charging work of the devices, so that the purpose of sequentially testing the plurality of devices is achieved, and the function of automatic testing is realized.
If the number of the testing devices needs to be increased, the testing of more devices can be realized by changing the number of the device testing seats and the number of the relays.
The device has the following technical effects:
1. the function of automatically testing and recording the output voltage value can be realized. The whole process only needs an operator to open corresponding instruments and connect the instruments together according to requirements, so that the automatic test can be carried out, the automation degree is high, and manual operation is reduced.
2. By adopting the modular design, the voltage and current conditions can be directly changed according to the corresponding requirements of the device, no additional component is needed, the test can be started only by connecting the device to be tested, the use of devices with different packages and different models can be met, and the compatibility is strong.
The invention is suitable for verifying the direct current working stability of the three-terminal adjustable integrated voltage stabilizer with multiple types and encapsulation.
Drawings
FIG. 1: the function verification principle schematic diagram of the conventional three-terminal adjustable integrated voltage stabilizer.
FIG. 2: the invention discloses a principle schematic diagram of a function verification automatic testing device.
FIG. 3: the invention discloses a schematic circuit principle diagram of a test circuit module.
FIG. 4: the invention discloses a schematic diagram of a layout structure of a test circuit module circuit board.
Detailed Description
As shown in fig. 2-4, the specific implementation of the automatic test device for 8-bit functional verification is as follows:
the voltage measuring device adopts a digital multimeter, the load component is a resistor, and the clamp device is a banana head plug-in hole.
The test control module is a single chip microcomputer control module.
The test circuit module, the load assembly, the fixture device and the device to be tested are manufactured on the same test circuit board, the plug-in hole A is a VI interface, the plug-in hole B is an ADJ interface, and the plug-in hole C is a VO interface.
The test control module and the relay are manufactured on the same control circuit board and comprise a manual test key, an automatic operation key, a reset key, a relay LED lamp and an operation LED lamp.
And assembling and connecting the digital multimeter, the computer, the data storage device, the test circuit board and the control circuit board according to requirements, namely completing the assembling and connecting of the test device.
The principle is that 8 structures shown in fig. 1 are connected in parallel, and an A, B, C interface in fig. 4 is respectively connected with an input end VI, an adjustment end ADJ and an output end VO of a device to be tested.
The single chip microcomputer control module controls the sequential opening and closing of the 8 relays (the working mode is similar to that of a water lamp), the LED lamps are used as operation prompts, the No. 1-8 LED lamps respectively correspond to the No. 1-8 relays, and the LED is lightened to represent that the relays are closed.
When the direct current constant current power supply is electrified, the LED lamp is turned on in an 'operation' mode; when a manual test key or an automatic operation key is pressed, the 1 LED lamp is lightened and the 1 relay is closed at the same time. The differences between manual testing and automatic operation are:
and when the current relay is switched off, the next LED lamp is turned on, and the next relay is switched on at the same time, so that the purpose of switching the next relay to work is achieved. The automatic test is that every 5 minutes, the next relay is automatically switched to work.
In any process, when the reset key is pressed, the control module returns to the state that the No. 1 LED lamp lights the No. 1 relay
When the relay is closed, a short-circuit signal is sent to the computer through the USB connecting line, and the computer starts to read and record data of the digital multimeter.
And finally, 8 relays are respectively connected with the test circuit board, 8 devices are opened and closed in sequence by means of the relays to realize device charging work, and the purpose of sequentially testing the 8 devices is achieved, so that the function of automatic testing is realized.
The test apparatus operates as follows:
1. the computer is connected with the digital multimeter through a special interface wire (GPIB wire) to read data; and the digital multimeter is connected with the output end VO of the device to be measured, and measures the output voltage.
2. The operator turns on the DC constant current power supply and adjusts the DC constant current power supply to 35V according to the standard requirement
3. Starting automatic testing by pressing the "autorun" button of the control module
4. After the test is finished, the control module controls all 8 relays to be in a disconnection state, and when an operator closes the direct current cross current power supply and the motor stores test data on the computer, the test is finished.
Finally, it should be noted that: the above examples are merely examples for clarity of illustration, and the present invention includes but is not limited to the above examples, which are not necessarily exhaustive of all embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Embodiments that meet the requirements of the present invention are within the scope of the present invention.
Claims (8)
1. The utility model provides an integrated stabiliser functional verification automatic testing arrangement that three-terminal is adjustable which characterized in that includes: the device comprises a test circuit module, a test control module, a relay, a direct current power supply, a computer, a data access device, a voltage measuring device, a load assembly, test software, a device to be tested and a clamp device;
the test circuit module is connected with the test control module through a relay, and the direct-current power supply is connected with the relay;
the computer is connected with the test circuit module, the data access device and the voltage measuring device;
the device to be tested is connected with the test circuit module through the clamp device and is connected with the load assembly through the clamp device;
the voltage measuring device is connected with the device to be measured and the load assembly;
the test software is arranged in the test control module and the computer and controls the relay switch and the computer to read and access data.
2. The device for automatically testing the functional verification of the three-terminal adjustable integrated voltage regulator according to claim 1, wherein:
the test control module controls the relays to be sequentially opened and closed through a manual test key, an automatic operation key and a reset key, and uses LED lamps as operation prompts, wherein the serial numbers of the LED lamps respectively correspond to the serial numbers of the relays, and the LED lamps are turned on to represent that the relays are closed;
when the direct current power supply is electrified, the running LED lamp is lightened; when a manual test key or an automatic operation key is pressed, the No. 1 LED lamp is lightened, and the No. 1 relay is closed;
when the current relay is switched on, the current LED lamp is turned off, the current relay is turned off, the next LED lamp is turned on, and the next relay is turned on, so that the purpose of switching the next relay to work is achieved;
the automatic test is that every 5 minutes, the next relay is automatically switched to work;
in any process, when a reset key is pressed, the control module returns to the state that the No. 1 LED lamp is lightened and the No. 1 relay is closed;
when the relay is closed, a short-circuit signal is sent to the computer through the USB connecting line, and the computer starts to read and record data of the voltage measuring device;
and finally, the plurality of relays are respectively connected with the device testing seat, and the plurality of devices are sequentially switched by means of the relays to realize the charging work of the devices, so that the purpose of sequentially testing the plurality of devices is achieved, and the function of automatic testing is realized.
3. The automatic testing device for functional verification of the three-terminal adjustable integrated voltage regulator according to claim 1, wherein the voltage measuring device is a digital multimeter.
4. The apparatus of claim 1, wherein the load device is a resistor.
5. The automatic testing device for functional verification of three-terminal adjustable integrated voltage regulator of claim 1, wherein the fixture means is a banana head plug-in hole.
6. The automatic testing device for functional verification of the three-terminal adjustable integrated voltage regulator according to claim 1, wherein the testing control module is a single chip microcomputer control module.
7. The automatic testing device for functional verification of the three-terminal adjustable integrated voltage regulator according to claim 1, wherein the testing circuit module, the load assembly, the clamping device and the device to be tested are manufactured on the same testing circuit board, the plug-in hole a is a VI interface, the plug-in hole B is an ADJ interface, and the plug-in hole C is a VO interface.
8. The automatic testing device for functional verification of the three-terminal adjustable integrated voltage regulator according to claim 1, wherein the test control module and the relay are manufactured on the same control circuit board, and comprise a manual test button, an automatic operation button, a reset button, a relay LED lamp and an operation LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210842323.XA CN115079764A (en) | 2022-07-18 | 2022-07-18 | Automatic testing arrangement is verified to three-terminal adjustable integrated voltage regulator function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210842323.XA CN115079764A (en) | 2022-07-18 | 2022-07-18 | Automatic testing arrangement is verified to three-terminal adjustable integrated voltage regulator function |
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| CN115079764A true CN115079764A (en) | 2022-09-20 |
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| CN111487554A (en) * | 2020-03-17 | 2020-08-04 | 北京交通大学 | Automatic testing system and method for direct current-to-direct current power supply module |
| CN211349660U (en) * | 2019-09-19 | 2020-08-25 | 赵洪华 | Electrician safety operation examination equipment |
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2022
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| CN2842437Y (en) * | 2005-11-15 | 2006-11-29 | 比亚迪股份有限公司 | Real-time emulational liquid-crystal module detecting apparatus |
| US20100225466A1 (en) * | 2009-03-03 | 2010-09-09 | Synergistic Technology Solutions, Inc. | System architecture and apparatus for programmable automatic power supply testing |
| CN202305773U (en) * | 2011-10-24 | 2012-07-04 | 天津市中环电子计算机有限公司 | 11.5W alternating-current power supply testing system |
| CN102636723A (en) * | 2012-05-04 | 2012-08-15 | 新疆维吾尔自治区送变电工程公司 | Secondary cable checking method for transformer substation |
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| CN111487554A (en) * | 2020-03-17 | 2020-08-04 | 北京交通大学 | Automatic testing system and method for direct current-to-direct current power supply module |
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