CN219065697U - DC stabilized power supply calibration system and power supply test equipment - Google Patents
DC stabilized power supply calibration system and power supply test equipment Download PDFInfo
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- CN219065697U CN219065697U CN202222928671.7U CN202222928671U CN219065697U CN 219065697 U CN219065697 U CN 219065697U CN 202222928671 U CN202222928671 U CN 202222928671U CN 219065697 U CN219065697 U CN 219065697U
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Abstract
The embodiment of the utility model discloses a direct-current stabilized power supply calibration system and power supply test equipment. The direct current stabilized power supply calibration system comprises: the system comprises a switching box, an electronic load, a digital multi-purpose meter and an upper computer, wherein the upper computer is respectively connected with the electronic load and the digital multi-purpose meter, and the switching box is connected with the electronic load, the digital multi-purpose meter and a first interface for connecting a detected direct current stabilized power supply; the switching box is used for realizing switching of test parameters to be calibrated based on the upper computer when the detected direct current stabilized power supply is calibrated. The utility model solves the technical problems of low calibration efficiency and high risk of adopting manual calibration of the direct current stabilized power supply in the related technology, and achieves the technical effects of improving the test working efficiency of the direct current stabilized power supply, reducing the manual metering error and avoiding the risk of manual operation.
Description
Technical Field
The utility model relates to the technical field of automatic testing of electronic products, in particular to a direct-current stabilized power supply calibration system and power supply testing equipment.
Background
Because the application is extensive, direct current stabilized power supply's quantity is huge, and direct current stabilized power supply's cycle is examined and is all adopted manual mode to go on in addition, and the human factor influences more, and the calibration time is long, can influence the calibration progress of power even, moreover, need not stop the line that trades when artifical calibration, leads to manual operation's error and danger easily. In addition, the larger the power of the traditional direct current electronic load is, the larger the weight is, a large number of standard devices are required to be carried when the calibration of the direct current stabilized power supply is carried out on site, the size is huge, and the direct current stabilized power supply is difficult to transport. For example, when the direct current regulated power supply is manually calibrated in the past, the calibration of parameters such as current, ripple voltage, load adjustment rate, short-term stability and the like all need to use the direct current electronic load which weighs at least 30kg, carry in the field calibration of the extra province is extremely inconvenient, the uncertain factors in the way are more, the collision with other articles cannot be completely avoided, the equipment wiring is fallen off or the shell is damaged, and the accuracy and the service life rate of the direct current electronic load are affected.
For the above-described problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the utility model provides a direct current stabilized power supply calibration system and power supply test equipment, which at least solve the technical problems of low calibration efficiency and high risk caused by manually calibrating the direct current stabilized power supply in the related technology.
According to an aspect of an embodiment of the present utility model, there is provided a dc stabilized power supply calibration system including: the device comprises a switching box, an electronic load, a digital multi-purpose meter and an upper computer, wherein the upper computer is respectively connected with the electronic load and the digital multi-purpose meter, and the switching box is connected with the electronic load, the digital multi-purpose meter and a first interface for connecting a tested direct current stabilized power supply; the switching box is used for realizing switching of test parameters to be calibrated based on the upper computer when the detected direct current stabilized power supply is calibrated.
Optionally, the method further comprises: and one end of the shunt is connected with the first interface, and the other end of the shunt is connected with the switching box.
Optionally, a plurality of switches are disposed in the adapter box, where each switch combination corresponds to one of the test parameters.
Optionally, the plurality of switches includes: a first switch, a second switch, and a third switch; the first end of the first switch is connected with the first interface, and the second end of the first switch is connected with the digital multimeter; the first end of the second switch is connected with the first interface, and the second end of the second switch is connected with the shunt; the first end of the third switch is connected with the second end of the first switch, and the second end of the third switch is connected with the electronic load.
Optionally, the method further comprises: and the voltage regulator is connected with the first interface and is used for providing different voltages.
Optionally, the upper computer is in communication connection with the voltage regulator, the first interface, the switching box, the electronic load and the digital multimeter by adopting a data transmission bus.
Optionally, the method further comprises: and the second interface is connected with the upper computer and used for carrying out data communication with external equipment.
Optionally, the upper computer is further configured to store test data detected by the digital multimeter.
Optionally, the test parameters include at least one of: voltage representation value error, ripple voltage, current representation value error, load adjustment rate, power supply voltage adjustment rate.
According to another aspect of an embodiment of the present utility model, there is also provided a power supply test apparatus including: the combined cabinet is internally provided with the direct-current stabilized power supply calibration system according to any one of the above.
In an embodiment of the present utility model, the calibration system for a dc regulated power supply includes: the system comprises a switching box, an electronic load, a digital multi-purpose meter and an upper computer, wherein the upper computer is respectively connected with the electronic load and the digital multi-purpose meter, and the switching box is connected with the electronic load, the digital multi-purpose meter and a first interface for connecting a detected direct current stabilized power supply; the switching box is used for realizing switching of test parameters to be calibrated based on the upper computer when the detected direct current stabilized power supply is calibrated. That is, the embodiment of the utility model replaces manual wiring operation by the adapter box and automatically switches the test parameters to be calibrated, thereby realizing the calibration of the detected direct current stabilized power supply, further solving the technical problems of low calibration efficiency and high risk of adopting manual calibration direct current stabilized power supply in the related technology, and achieving the technical effects of improving the test work efficiency of the direct current stabilized power supply, reducing manual metering errors and avoiding the risk of manual operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
fig. 1 is a schematic diagram of a calibration system for a dc regulated power supply according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of another calibration system for a DC regulated power supply according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of an internal connection of a junction box according to an embodiment of the present utility model.
Wherein the above figures include the following reference numerals:
11. a junction box; 12. an electronic load; 13. a digital multimeter; 14. an upper computer; 15. a first interface; 16. a DC stabilized voltage supply to be detected; 21. a voltage regulator; 22. a shunt; 23. a data transmission bus; 24. an external device.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and in the drawings are used for distinguishing between different objects and not for limiting a particular order.
According to an aspect of the embodiment of the present utility model, there is provided a dc regulated power supply calibration system, and fig. 1 is a schematic diagram of the dc regulated power supply calibration system provided by the embodiment of the present utility model, as shown in fig. 1, where the dc regulated power supply calibration system includes: the electronic load 12, the digital multimeter 13 and the upper computer 14 are respectively connected with the upper computer 14, the electronic load 12 and the digital multimeter 13, and the adapter box 11 is connected with the electronic load 12, the digital multimeter 13 and a first interface 15 for connecting a detected direct current stabilized power supply 16; the adapter box 11 is used for realizing switching of test parameters to be calibrated based on the upper computer 14 when calibrating the detected direct current stabilized power supply 16.
The above-mentioned switching box 11 can replace the manual line replacement to realize the switching of the test parameter to be calibrated, namely can switch the test items such as the voltage representation value error, ripple voltage, current representation value error, load adjustment rate, power voltage adjustment rate, etc. automatically; the electronic load 12 is configured to provide a required load value when testing the load adjustment rate of the dc regulated power supply 16, for example, to provide a matched load value for the dc regulated power supply 16, so that the dc regulated power supply 16 can output current; the digital multi-purpose table 13 is used for realizing the test of parameters such as direct current voltage, direct current, load adjustment rate, ripple, short-term stability and the like; all the devices in the detected direct current stabilized power supply 16 and the direct current stabilized power supply calibration system can be controlled by the upper computer 14; remote control of the electronic load 12 and the digital multimeter 13 is realized by adopting an RS232 bus; the upper computer 14 automatically calibrates the detected direct current stabilized power supply 16 through the first interface 15, automatically fills the test data of the digital multimeter 13 into the original recording template, greatly optimizes the manual test line changing process, simplifies the operation steps, improves the working efficiency, and ensures that the test result is more accurate.
It should be noted that, each device in the dc regulated power supply calibration system may be electrically connected, or may be in communication connection, and may be set according to application requirements. In addition, the junction box replaces manual wiring operation, and the danger of manual operation is avoided. The digital multimeter can adopt 8808A type digital multimeter with 5.5 bit digital resolution produced by Fluke company, has communication interfaces such as RS-232 interface, can directly measure ripple voltage, and can also measure current through a shunt. The upper computer 14 includes, but is not limited to, an embedded computer; the electronic load 12 includes, but is not limited to, a programmable electronic load.
In an embodiment of the present utility model, the calibration system for a dc regulated power supply includes: the system comprises a switching box, an electronic load, a digital multi-purpose meter and an upper computer, wherein the upper computer is respectively connected with the electronic load and the digital multi-purpose meter, and the switching box is connected with the electronic load, the digital multi-purpose meter and a first interface for connecting a detected direct current stabilized power supply; the switching box is used for realizing switching of test parameters to be calibrated based on the upper computer when the detected direct current stabilized power supply is calibrated. That is, the embodiment of the utility model replaces manual wiring operation by the adapter box and automatically switches the test parameters to be calibrated, thereby realizing the calibration of the detected direct current stabilized power supply, further solving the technical problems of low calibration efficiency and high risk of adopting manual calibration direct current stabilized power supply in the related technology, and achieving the technical effects of improving the test work efficiency of the direct current stabilized power supply, reducing manual metering errors and avoiding the risk of manual operation.
Aiming at the prominent pain points that the traditional direct current electronic load has larger power, larger volume and heavier weight, a large number of standard devices are needed to be carried when the direct current stabilized voltage power supply calibration is carried out on site, the direct current stabilized voltage power supply calibration system has the characteristics of simplicity and convenience in operation, easiness in carrying and the like, and meets the direct current stabilized voltage power supply test requirement of the on-site aging system. Aiming at the cycle test item that the load adjustment rate and the output voltage stability are the direct current stabilized power supply, the reading and the calculation of the direct current voltage during full load and no load are needed to be realized during calibration, the line is needed to be replaced continuously during manual calibration, the switching between the full load state and the no load state of the electronic load is realized based on a change-over switch of an upper computer, and the stability and the load adjustment rate are automatically calculated by utilizing the upper computer. In addition, the direct-current stabilized power supply calibration system effectively simplifies operation steps, can solve the problems that the current on-site metering calibration is long in time consumption, the calibration items are more, and the portable equipment is inconvenient, greatly improves working efficiency, and enables test results to be more accurate.
In an exemplary embodiment, the dc regulated power supply calibration system further includes: and one end of the shunt is connected with the first interface 15, and the other end of the shunt is connected with the adapter box 11.
The shunt has the function of testing the error of the current representation value and can expand the testing current range to 30A.
In an exemplary embodiment, a plurality of switches are disposed in the adapter box 11, where each switch combination corresponds to a test parameter. The plurality of switches includes: a first switch, a second switch, and a third switch; wherein, the first end of the first switch is connected with the first interface 15, and the second end of the first switch is connected with the digital multimeter 13; the first end of the second switch is connected with the first interface 15, and the second end of the second switch is connected with the shunt; the first end of the third switch is connected to the second end of the first switch and the second end of the third switch is connected to the electronic load 12.
The switch includes, but is not limited to, a relay. Three-way switches are arranged in the transfer box, different combination forms correspond to different test parameters, and the upper computer 14 realizes the switching of all the switches in the transfer box through the three-way relay.
In an exemplary embodiment, the dc regulated power supply calibration system further includes: a voltage regulator is connected to the first interface 15 for providing different voltages. Such voltage regulators include, but are not limited to, programmable voltage regulators, which may be used to regulate the output voltage. Optionally, the voltage regulator adjusts the output voltage to include, but not limited to 187V, 198V, 220V, 250V, 253V, and in addition, in the implementation process, the voltage regulator adjusts the output voltage to be flexibly set according to actual requirements.
In an exemplary embodiment, the host computer 14 is communicatively connected to the voltage regulator, the first interface 15, the junction box 11, the electronic load 12, and the digital multimeter 13 using a data transmission bus.
The data of all test items are measured by the digital multimeter 13 and then uploaded to the upper computer through the data transmission bus.
In an exemplary embodiment, the dc regulated power supply calibration system further includes: and a second interface connected to the host computer 14 for data communication with an external device.
Such external devices include, but are not limited to, printers, mobile terminals, data storage hard disks, and the like. Alternatively, when the external device is a printer, a certificate report may be printed out using the device.
In an exemplary embodiment, the upper computer 14 is further configured to store test data detected by the digital multimeter 13.
In an exemplary embodiment, the test parameters include at least one of: voltage representation value error, ripple voltage, current representation value error, load adjustment rate, power supply voltage adjustment rate.
Fig. 2 is a schematic diagram of another dc regulated power supply calibration system according to an embodiment of the present utility model, as shown in fig. 2, the dc regulated power supply calibration system includes: the switching box 11, the electronic load 12, the digital multimeter 13, the upper computer 14, the voltage regulator 21, the current divider 22, the data transmission bus 23 and the external equipment 24, wherein the data communication among the electronic load 12, the digital multimeter 13, the external equipment 24 and the upper computer 14 is realized through the data transmission bus 23, and the current divider 22 is arranged on a circuit between the switching box 11 and the detected direct current regulated power supply 16. Firstly, information of the detected direct current stabilized power supply 16 is recorded, the calibration program is started through the control of the upper computer 14, the initialization is carried out, whether communication between each device in the detected direct current stabilized power supply 16 and a direct current stabilized power supply calibration system and the upper computer 14 is normal or not is detected, and the connection state of each device is prompted. After the detected direct current stabilized power supply 16 is normally communicated with the upper computer 14, the upper computer 14 selects the test parameters to be calibrated, and calibration of each project group is started. The adapter 11 can automatically switch the test items such as voltage indication value error, ripple voltage, current indication value error, load adjustment rate, power supply voltage adjustment rate, etc.
Fig. 3 is a schematic diagram of an internal connection of a junction box according to an embodiment of the present utility model, as shown in fig. 3, by implementing switching of corresponding test parameters to be calibrated through different on-off states of a relay K1, a relay K2 and a relay K3 in the junction box, for example, when calibrating a power supply voltage adjustment rate and a voltage indication error, the relay K3 is turned off, the relay K1 is turned on, and the relay K2 is turned off; when the current indication error is calibrated, if the calibration current is less than 10A, the relay K3 is closed, the relay K1 is closed, the relay K2 is opened, and if the calibration current is more than 10A, the relay K3 is closed, the relay K1 is closed, and the relay K2 is closed; when the ripple voltage is calibrated, the relay K3 is closed, the relay K1 is closed, and the relay K2 is opened; when the load adjustment rate is calibrated, the relay K3 is closed, the relay K1 is closed, the relay K2 is opened in a full load state, and the relay K3 is opened, the relay K1 is closed and the relay K2 is opened in an idle state.
After the detected dc regulated power supply 16 communicates with the host computer 14 normally, calibration of each item group is started according to the test items such as the voltage indication value error, the current indication value error, the ripple voltage, the load adjustment rate, the power supply voltage adjustment rate, and the like.
According to another aspect of an embodiment of the present utility model, there is also provided a power supply test apparatus including: the combined cabinet is internally provided with the direct-current stabilized power supply calibration system according to any one of the above.
All the equipment, the related communication cables and the test cables in the direct-current stabilized power supply calibration system are integrated into a combined cabinet, and tools and a power line placement area are reserved in the combined cabinet; the positions of the test interfaces of the digital multimeter in the DC stabilized power supply calibration system are in one-to-one correspondence with the reserved wiring interfaces of the combined cabinet. In addition, the power supply test equipment has small volume and weight controlled within 10Kg, is easy to carry, and can meet the calibration requirement of most direct current stabilized power supplies on site.
The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.
Claims (10)
1. A dc regulated power supply calibration system, comprising: the device comprises a switching box, an electronic load, a digital multi-purpose meter and an upper computer, wherein the upper computer is respectively connected with the electronic load and the digital multi-purpose meter, and the switching box is connected with the electronic load, the digital multi-purpose meter and a first interface for connecting a tested direct current stabilized power supply; the switching box is used for realizing switching of test parameters to be calibrated based on the upper computer when the detected direct current stabilized power supply is calibrated.
2. The dc regulated power supply calibration system of claim 1, further comprising: and one end of the shunt is connected with the first interface, and the other end of the shunt is connected with the switching box.
3. The system of claim 2, wherein a plurality of switches are disposed in the junction box, wherein each switch combination corresponds to one of the test parameters.
4. The dc regulated power supply calibration system of claim 3, wherein a plurality of said switches comprise: a first switch, a second switch, and a third switch; the first end of the first switch is connected with the first interface, and the second end of the first switch is connected with the digital multimeter; the first end of the second switch is connected with the first interface, and the second end of the second switch is connected with the shunt; the first end of the third switch is connected with the second end of the first switch, and the second end of the third switch is connected with the electronic load.
5. The dc regulated power supply calibration system of claim 1, further comprising: and the voltage regulator is connected with the first interface and is used for providing different voltages.
6. The system of claim 5, wherein the host computer is communicatively coupled to the voltage regulator, the first interface, the junction box, the electronic load, and the digital multimeter using a data transfer bus.
7. The dc regulated power supply calibration system of claim 1, further comprising: and the second interface is connected with the upper computer and used for carrying out data communication with external equipment.
8. The system of claim 1, wherein the host computer is further configured to store test data detected by the digital multimeter.
9. The dc regulated power supply calibration system of claim 1, wherein the test parameters include at least one of: voltage representation value error, ripple voltage, current representation value error, load adjustment rate, power supply voltage adjustment rate.
10. A power supply testing apparatus, comprising: a combination cabinet, wherein the combination cabinet is provided therein with the dc regulated power supply calibration system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222928671.7U CN219065697U (en) | 2022-11-03 | 2022-11-03 | DC stabilized power supply calibration system and power supply test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222928671.7U CN219065697U (en) | 2022-11-03 | 2022-11-03 | DC stabilized power supply calibration system and power supply test equipment |
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| Publication Number | Publication Date |
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| CN219065697U true CN219065697U (en) | 2023-05-23 |
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| CN202222928671.7U Active CN219065697U (en) | 2022-11-03 | 2022-11-03 | DC stabilized power supply calibration system and power supply test equipment |
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| CN (1) | CN219065697U (en) |
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