CN114966510A - Current detection device of electrical measurement equipment - Google Patents
Current detection device of electrical measurement equipment Download PDFInfo
- Publication number
- CN114966510A CN114966510A CN202210539476.7A CN202210539476A CN114966510A CN 114966510 A CN114966510 A CN 114966510A CN 202210539476 A CN202210539476 A CN 202210539476A CN 114966510 A CN114966510 A CN 114966510A
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- Prior art keywords
- contactor
- load
- current
- unit
- relay
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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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
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model provides an electric measuring equipment current detection device, belongs to the automatic termination field, is to the potential safety hazard problem that leads to too much because manual operation in the testing process and proposes, including detecting stage body unit, sensor unit, load part and waiting to detect electric measuring equipment, it includes a plurality of stage body current detection signal reception ports to detect stage body unit, the sensor unit includes a plurality of current transformer, the load part, including actual load and contactor unit, actual load includes a plurality of loads, the contactor unit includes controller, a plurality of relay and a plurality of contactor. The current detection link can be changed into automatic access after being set in advance, so that the detection efficiency is improved, and the probability of damaging equipment due to too many wiring operation procedures and wiring errors can be reduced.
Description
Technical Field
The invention relates to the field of automatic wiring devices, in particular to a current detection device of electrical measurement equipment.
Background
The detection of the electric measuring equipment which is connected to the network is an indispensable important link, and the safety, reliability and accuracy of the detection of the electric measuring equipment are important indexes which must be guaranteed. At present, the detection of the electric measuring equipment mainly takes manual detection as a main part, manual wiring and wire changing are needed, different equipment detection projects need different wiring modes, and a plurality of electric measuring equipment need to be detected simultaneously.
The prior art has the following defects:
the detection precision is reduced and the detection is failed due to artificial operation errors, and the detection process has potential safety hazards due to complex wiring, so that the problem of the existing detection assembly line is solved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the current detection device for the electric measurement equipment, which can solve the problem of potential safety hazard caused by excessive manual operation in the detection process and can also improve the automation level and the detection efficiency of the detection of the electric measurement equipment by a detection production line.
The technical scheme adopted by the invention is as follows:
the current detection device of the electric measuring equipment comprises a detection table body unit, a sensor unit and a load part, wherein the detection table body unit comprises a table body current detection signal receiving port, the sensor unit comprises a current transformer, the load part comprises an actual load and a contactor unit, the actual load comprises a load, and the contactor unit comprises a controller, a relay and a contactor;
the detection table body unit is connected with a current transformer of the sensor unit through a table body current detection signal receiving port, the current transformer of the sensor unit is connected with an electric measuring device to be detected through an automatic telescopic probe, the output end of a controller in the contactor unit is connected with the input end of a relay, the output end of the relay is connected with the input end of a contactor, one output end of the contactor is connected with a power supply, the other output end of the contactor is connected with a load in an actual load, and the load is connected with the electric measuring device to be detected through the automatic telescopic probe.
Further, the detection table body unit is used for detecting current and outputting a signal to the controller.
Further, the current transformer and the electric measuring equipment detect that a table body current detection signal receiving port of the table body unit is connected with a load of the current transformer to obtain detection data.
Further, the controller is used for controlling the relay driving circuit; the relay is used for controlling whether the contactor is conducted or not; the contactor is used for controlling the load to be switched in or out;
furthermore, the load is a high-power resistor with different rated powers and is used for matching with electrical measuring equipment with different measuring ranges or different measuring ranges of the same electrical measuring equipment.
Further, the controller comprises a relay driving circuit composed of a single chip microcomputer and used for controlling a relay contact switch and further controlling the on-off of the contactor.
The invention has the beneficial effects that:
1. by using the scheme provided by the invention, the current detection link can be changed into automatic access after being set in advance, so that the detection efficiency is improved;
2. the probability of damaging equipment due to wiring errors caused by excessive wiring operation procedures can be reduced;
3. the automatic allocation of various multi-capacity loads can be realized rapidly in the detection process, so that the detection is more precise and reasonable.
Drawings
FIG. 1 is a structural view of a current detecting device of an electric measuring apparatus;
FIG. 2 is a relay drive circuit diagram of a current sensing device of an electrical measuring apparatus;
FIG. 3 is a block diagram of the load portion of a current sensing device for an electrical measuring apparatus;
Detailed Description
The utility model provides an electric measuring equipment current detection device, is including detecting stage body unit, sensor unit, load part and waiting to detect electric measuring equipment, it includes stage body current detection signal reception port to detect stage body unit, the sensor unit includes current transformer, the load part, including actual load and contactor unit, actual load includes the load, the contactor unit includes controller, relay and contactor.
The detection table body unit is connected with a current transformer of the sensor unit through a table body current detection signal receiving port, the current transformer of the sensor unit is connected with an electric measuring device to be detected through an automatic telescopic probe, the connection branch is connected with a power supply, the output end of a controller in the contactor unit is connected with the input end of a relay, the output end of the relay is connected with the input end of a contactor, the output end of the contactor is connected with the power supply through a node 2, the other output end of the contactor is connected with a load in an actual load, and the load is connected with the electric measuring device to be detected through a node 1.
The detection table body unit is used for detecting current and outputting a signal to the controller;
the current transformer is used for avoiding artificial wiring, and the electric measurement equipment detects that a platform body current detection signal receiving port of the platform body unit is connected with a load of the current transformer to obtain detection data;
the controller is used for controlling the relay driving circuit;
the relay is used for controlling whether the contactor is conducted or not;
the contactor is used for controlling the load to be switched in or out;
the load is used for matching with the electric measuring equipment for detecting different measuring ranges or different measuring ranges of the same electric measuring equipment. The change of the system resistance is realized by adjusting the load so as to achieve the working parameters of the system.
The invention mainly designs a mode of adopting an automatic probe to carry out electrical connection on the current detection process of the electrical measurement equipment in the detection process of the electrical measurement equipment in a detection assembly line of a detection laboratory of the electrical measurement equipment. When the current detection meets the wiring requirement and the detection process can detect different ranges of the electric measuring equipment with different ranges or the same electric measuring equipment, the load needs to be replaced, and a device for automatically adjusting multiple types of probes of the load to combine and match with multiple paths of loads and automatically allocating the loads for testing is designed.
As shown in fig. 1 and 2, the load is switched in or out by a contactor, and the contactor is controlled by a controller through a relay. The current transformer is assembled on each independent load in advance, manual wiring is avoided, the transformer is connected with a signal receiving end of a detection table body of the electric measurement equipment, namely a table body current detection signal receiving port of the detection table body unit of the electric measurement equipment is connected with a load of the current transformer, detection data is obtained, meanwhile, adjustment is carried out according to a result of current measurement of the detection table body unit, and through controlling on-off of the contactor, which groups of loads are connected or cut out from a circuit is determined.
The method for adjusting according to the result of the current measured by the detection table body unit comprises the following steps: and outputting the result of the measured current to an msp430f5529 singlechip, forming and controlling a relay driving circuit by using the msp430f5529 singlechip, controlling a triode by using a common I/O port of the msp430f5529 singlechip to control a relay switch, and determining whether a coil of a contactor is electrified or not by opening and closing a relay contact, indirectly controlling whether the contactor contact is conducted or not, and finally completing the access or cut-out of a load line.
The situation that current flows through a detected line after the load is put into use and the mutual inductor is not connected with the load when the load is automatically allocated is avoided, the current mutual inductor is prevented from being damaged, the probability of accidents is reduced, and the detection efficiency is improved due to the fact that the automation degree of the link is improved.
Claims (6)
1. The current detection device of the electric measuring equipment is characterized by comprising a detection table body unit, a sensor unit and a load part, wherein the detection table body unit comprises a table body current detection signal receiving port, the sensor unit comprises a current transformer, the load part comprises an actual load and a contactor unit, the actual load comprises a load, and the contactor unit comprises a controller, a relay and a contactor;
the detection table body unit is connected with a current transformer of the sensor unit through a table body current detection signal receiving port, the current transformer of the sensor unit is connected with an electric measuring device to be detected through an automatic telescopic probe, the output end of a controller in the contactor unit is connected with the input end of a relay, the output end of the relay is connected with the input end of a contactor, one output end of the contactor is connected with a power supply, the other output end of the contactor is connected with a load in an actual load, and the load is connected with the electric measuring device to be detected through the automatic telescopic probe.
2. The current detection device of claim 1, wherein the detection stage unit is configured to detect a current and output a signal to the controller.
3. The current detection device of claim 1, wherein the current transformer and the current detection device are configured to obtain detection data by connecting a stage current detection signal receiving port of the stage unit to a load of the current transformer.
4. An electrical measuring device current sensing apparatus as claimed in claim 1 wherein said controller is adapted to control a relay drive circuit; the relay is used for controlling whether the contactor is conducted or not; and the contactor is used for controlling the connection or disconnection of a load.
5. The current detecting device of electric measuring equipment as claimed in claim 1, wherein said load is a high power resistor with different rated power for matching with electric measuring equipment with different measuring ranges or different measuring ranges of the same electric measuring equipment.
6. The current detecting device of claim 1, wherein the controller comprises a relay driving circuit formed by a single chip microcomputer, and is used for controlling the relay contact switch and further controlling the on-off of the contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210539476.7A CN114966510A (en) | 2022-05-17 | 2022-05-17 | Current detection device of electrical measurement equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210539476.7A CN114966510A (en) | 2022-05-17 | 2022-05-17 | Current detection device of electrical measurement equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114966510A true CN114966510A (en) | 2022-08-30 |
Family
ID=82983673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210539476.7A Pending CN114966510A (en) | 2022-05-17 | 2022-05-17 | Current detection device of electrical measurement equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114966510A (en) |
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2022
- 2022-05-17 CN CN202210539476.7A patent/CN114966510A/en active Pending
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