CN111090061A - Volt-ampere characteristic test system - Google Patents
Volt-ampere characteristic test system Download PDFInfo
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- CN111090061A CN111090061A CN201911372762.3A CN201911372762A CN111090061A CN 111090061 A CN111090061 A CN 111090061A CN 201911372762 A CN201911372762 A CN 201911372762A CN 111090061 A CN111090061 A CN 111090061A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a volt-ampere characteristic testing system which comprises an upper computer, a power supply, a control board, a contactor, a voltmeter, a voltage sensor, an ammeter, a current sensor and a testing piece. The upper computer is connected with printer, power and control panel respectively, and the power passes through the contactor to be connected with the test piece, connects with voltmeter and voltage sensor on the power output bus, and it has ampere meter and current sensor to establish ties on the test piece. The upper computer possesses the display and prints and RS485 function. The power supply provides electric energy for the whole test system, has a continuously adjustable function and a communication function, and can be controlled by an upper computer. The control panel collects the current and the total voltage of each group of test pieces and sends the current and the total voltage to the upper computer for displaying and storing. The invention can realize that a plurality of groups of test pieces simultaneously carry out volt-ampere characteristic test, has automatic and manual test functions, and improves the test efficiency while ensuring the test precision.
Description
Technical Field
The invention belongs to the technical field of volt-ampere characteristic testing, and particularly relates to a volt-ampere characteristic testing system.
Background
The volt-ampere characteristic test of the test piece can reflect the change of the performance of the test piece along with the change of voltage and current, can judge whether the test piece is qualified or not, or limit the use condition of the test piece, for example, the volt-ampere characteristic test of the transformer core is used for checking the quality of the core and whether the winding has a short circuit problem or not. At present, most of magnetic core volt-ampere characteristic curve tests adopt a manual test method, a voltage regulator is used for testing, voltage current data are recorded after manual voltage regulation, data processing is uniformly carried out after a group of tests are finished, the efficiency is low, the test precision is not high, and the existing volt-ampere characteristic test system is not universal and causes the test cost to be increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a volt-ampere characteristic testing system, which overcomes the defects of the prior art that 1: at present, most of magnetic core volt-ampere characteristic curve tests adopt a manual test method, a voltage regulator is used for testing, voltage and current data are recorded after manual voltage regulation, and the test precision is not high; 2: the manual testing method is adopted for testing one by one, and after a group of tests are finished, data processing is uniformly carried out, so that the efficiency is low; 3: the existing volt-ampere characteristic test system is not universal, so that the test cost is increased, and meanwhile, the problems that a plurality of test pieces can be automatically tested at one time and the like are not disclosed in any patent.
In order to solve the technical problem, the technical scheme of the invention is as follows: the utility model provides a volt-ampere characteristic test system, includes host computer, printer, power, control panel, contactor, voltmeter, ampere meter, voltage sensor, current sensor and test piece, and wherein the host computer is connected with printer, power and control panel respectively, and wherein the power passes through the contactor to be connected with the test piece, and the last voltmeter and voltage sensor that has connect of power output bus has established ties on the test piece has ampere meter and current sensor, the contactor is connected to the control panel output, and wherein current sensor is connected to the control panel input, and wherein voltage sensor is still connected to the control panel input.
Preferably, the upper computer can control the start and stop of the whole test system, and can manually set the voltage and current required by the test, or automatically set according to the set stepping voltage and current values, can display the voltage and current of the test piece, process the voltage and current data and make a relevant table.
Preferably, the host computer possesses the RS485 function simultaneously and can communicate with power and control panel, the printer can be driven simultaneously to the host computer, prints the form data of making.
Preferably, the power supply provides electric energy for the whole test system, has the continuous and adjustable function of RS485 communication, and can be controlled by an upper computer.
Preferably, the output of the contactor is connected with a plurality of groups of ampere meters, current sensors and test pieces in parallel, and each group of ampere meters, current sensors and test pieces are connected in series.
Preferably, the control panel comprises controller, a plurality of AD acquisition circuits, RS485 circuit and switching value output circuit, switching value output circuit control contactor switch-on and disconnection, and wherein a plurality of AD acquisition circuits gather the voltage and the electric current of a plurality of test pieces respectively, and the control panel carries out the communication through RS485 circuit wherein and host computer.
Compared with the prior art, the invention has the advantages that:
(1) the invention provides a volt-ampere characteristic testing system which can be used for simultaneously testing a plurality of groups of testing pieces at high precision, the testing system is provided with a manual testing mode and an automatic testing mode, the automatic testing mode can send a voltage current value set by a power supply according to a set step length, meanwhile, the testing system is provided with a control board and has data processing and storing functions, after the testing is finished, the testing system processes testing data and makes a corresponding table for printing, and the testing efficiency and the testing precision are improved to a great extent;
(2) the invention provides a volt-ampere characteristic test system aiming at the problems of non-universality, low test efficiency, low test precision and the like of the previous volt-ampere characteristic test system, the test system can be suitable for various test pieces, can simultaneously test a plurality of test pieces, is provided with a high-precision power supply and a high-precision control board, provides reliable guarantee for the test precision of the whole test system, and can complete the volt-ampere characteristic test work of the test pieces with high precision and high efficiency;
(3) the invention reduces the test cost, and simultaneously, the upper computer, the control panel and the power supply adopt an RS485 communication mode, thereby facilitating the system expansion and enhancing the system capacity.
Drawings
FIG. 1 is a schematic diagram of a voltammetry testing system according to the present invention;
fig. 2 is a schematic diagram of a control board of a voltammetry testing system according to the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes, and other elements shown in the specification are included for the purpose of understanding and reading only, and are not intended to limit the scope of the invention, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, the invention discloses a volt-ampere characteristic testing system, which comprises an upper computer, a printer, a power supply, a control panel, a contactor, a voltmeter, an ammeter, a voltage sensor, a current sensor and a testing piece, wherein the upper computer is respectively connected with the printer, the power supply and the control panel, the power supply is connected with the testing piece through the contactor, the voltmeter and the voltage sensor are connected to a power output bus, the ammeter and the current sensor are connected in series to the testing piece, the output end of the control panel is connected with the contactor, the input end of the control panel is connected with the current sensor, and the input end of the control panel is also connected with the.
As shown in fig. 1, preferably, the upper computer may control the start and stop of the whole test system, may manually set the voltage and current required for the test, or may automatically set according to the set step voltage and current values, may display the voltage and current of the test piece, process the voltage and current data, and may make a relevant table.
As shown in fig. 1, preferably, the upper computer has an RS485 function and can communicate with the power supply and the control panel, and the upper computer can drive the printer to print the prepared form data.
As shown in fig. 1, preferably, the power supply provides power for the whole test system, and the power supply is continuously adjustable and has an RS485 communication function, and can be controlled by an upper computer.
As shown in fig. 1, preferably, the output of the contactor is connected in parallel with a plurality of sets of ammeters, current sensors and test pieces, and each set of ammeters, current sensors and test pieces are connected in series.
As shown in fig. 2, preferably, the control board is composed of a controller, a plurality of AD acquisition circuits, an RS485 circuit, and a switching value output circuit, the switching value output circuit controls the contactor to be turned on and off, wherein the plurality of AD acquisition circuits respectively acquire the voltage and the current of the plurality of test pieces, and the control board communicates with the upper computer through the RS485 circuit therein.
The working principle and the working process of the invention are as follows:
referring to the attached figure 1, the volt-ampere characteristic testing system provided by the invention comprises an upper computer, a power supply, a control panel, a contactor, a voltmeter, a voltage sensor, an ammeter, a current sensor and a printer, wherein the upper computer is connected with the printer, the power supply and the control panel; after the upper computer is started, an automatic test mode is selected, the upper computer controls the contactor to be closed through the control panel, meanwhile, the upper computer sends a set voltage and current value to the power supply according to a set step length, the upper computer communicates with the power supply through RS485, meanwhile, the power supply can also upload power supply data to the upper computer, the control panel collects the total voltage and the current of each test piece and sends the total voltage and the current to the upper computer through RS485, and the upper computer receives the voltage and the current collected by the control panel and then displays and stores the voltage and the current; if the manual mode is selected, the voltage value and the current value can be set as required to carry out real-time online control on the power supply, and the control panel collects the voltage value and the current value to display, process and store; if when not using the host computer, power and test piece and voltmeter, ampere meter also can use, after the voltage power button on the manual regulation power, the electric current on record voltmeter and every test piece, after the test is accomplished, manual to the output handle.
Installing a plurality of test pieces in a plurality of test piece positions, starting an upper computer, selecting an automatic test mode, controlling the contactor to be closed by the upper computer through a control panel, simultaneously sending the upper computer to a voltage current value set by a power supply according to a set step length, communicating the upper computer with the power supply by adopting RS485, sending the detected voltage value to the control panel by a voltage sensor, sending the detected current value of each test piece to the control panel by a current sensor, uploading the collected total voltage value and the current value of each test piece to the upper computer by the control panel through the RS485, displaying and storing the voltage current collected by the control panel by the upper computer after receiving the voltage current collected by the control panel, calculating to obtain a resistance value, sending the total voltage current value to a plurality of set voltage current values of the power supply by the upper computer according to the set step length, finally calculating a plurality of resistance values of the test pieces, and obtaining a change curve of, and obtaining the volt-ampere characteristics of a plurality of test pieces.
As shown in fig. 2, the control panel of the invention mainly comprises a controller, a plurality of AD acquisition circuits, an RS485 circuit and a switching value output circuit, wherein the plurality of AD acquisition circuits include an AD acquisition circuit 1, an AD acquisition circuit 2, … …, an AD acquisition circuit 10 and the like, the AD acquisition circuits are respectively connected with the current sensors in a one-to-one correspondence manner, after the controller receives a start command of an upper computer, the controller controls the switching value output circuit to close the contactor, and simultaneously starts a plurality of paths of the AD acquisition circuits to acquire the current and the total voltage of each test piece, and the current and the total voltage are uploaded to the upper computer in an RS485 communication manner, and the control panel and the power supply both adopt an RS485 communication manner to facilitate system expansion and enhance the capacity of the system.
The invention provides a volt-ampere characteristic testing system which can be used for simultaneously testing a plurality of groups of testing pieces at high precision, the testing system is provided with a manual testing mode and an automatic testing mode, the automatic testing mode can send a voltage current value set by a power supply according to a set step length, the testing system is provided with a control board and has data processing and storing functions, after the testing is finished, the testing system processes testing data and makes a corresponding table to be printed, and the testing efficiency and the testing precision are improved to a great extent.
The invention provides a volt-ampere characteristic test system aiming at the problems of low universality, low test efficiency, low test precision and the like of the conventional volt-ampere characteristic test system, the test system can be suitable for various test pieces, can simultaneously test a plurality of test pieces, is provided with a high-precision power supply and a high-precision control board, provides reliable guarantee for the test precision of the whole test system, and can complete the volt-ampere characteristic test work of the test pieces with high precision and high efficiency.
The invention reduces the test cost, and simultaneously, the upper computer, the control panel and the power supply adopt an RS485 communication mode, thereby facilitating the system expansion and enhancing the system capacity.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (6)
1. A volt-ampere characteristic test system is characterized in that: including host computer, printer, power, control panel, contactor, voltmeter, voltage sensor, ampere meter, current sensor and test piece, wherein the host computer is connected with printer, power and control panel respectively, and wherein the power passes through the contactor and is connected with the test piece, is connected with voltmeter and voltage sensor on the power output bus, and it has ampere meter and current sensor to establish ties on the test piece, the contactor is connected to the control panel output, and wherein current sensor is connected to the control panel input, and wherein voltage sensor is still connected to the control panel input.
2. A voltammetric characterization test system according to claim 1, wherein: the upper computer can control the starting and stopping of the whole test system, can manually set the voltage and the current required by the test, or automatically set according to the set step voltage and current values, can display the voltage and the current of a test piece, processes the voltage and current data and can make a relevant table.
3. A voltammetric characterization test system according to claim 1, wherein: the host computer possesses the RS485 function simultaneously and can communicate with power and control panel, the host computer can drive the printer simultaneously, prints the form data of making.
4. A voltammetric characterization test system according to claim 1, wherein: the power supply provides electric energy for the whole test system, has the continuous adjustable function and the RS485 communication function, and can be controlled by an upper computer.
5. A voltammetric characterization test system according to claim 1, wherein: the output of the contactor is connected with a plurality of groups of ampere meters, current sensors and test pieces in parallel, wherein each group of ampere meters, current sensors and test pieces are connected in series.
6. A voltammetric characterization test system according to claim 1, wherein: the control panel comprises controller, a plurality of AD acquisition circuit, RS485 circuit and switching value output circuit, switching value output circuit control contactor switch-on and disconnection, wherein a plurality of AD acquisition circuit gather the voltage and the electric current of a plurality of test pieces respectively, and the control panel carries out the communication through RS485 circuit wherein and host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372762.3A CN111090061A (en) | 2019-12-27 | 2019-12-27 | Volt-ampere characteristic test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372762.3A CN111090061A (en) | 2019-12-27 | 2019-12-27 | Volt-ampere characteristic test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111090061A true CN111090061A (en) | 2020-05-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911372762.3A Withdrawn CN111090061A (en) | 2019-12-27 | 2019-12-27 | Volt-ampere characteristic test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111090061A (en) |
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2019
- 2019-12-27 CN CN201911372762.3A patent/CN111090061A/en not_active Withdrawn
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Application publication date: 20200501 |