CN104049165A

CN104049165A - Electrical performance testing device of electromagnet

Info

Publication number: CN104049165A
Application number: CN201410304677.4A
Authority: CN
Inventors: 黄辉先; 庞达凌; 谭志飞; 任科明; 谭荣福; 陈任; 曾莎; 陈资滨
Original assignee: Xiangtan University
Current assignee: Xiangtan University
Priority date: 2014-06-24
Filing date: 2014-06-24
Publication date: 2014-09-17

Abstract

The invention discloses an electrical performance testing device of an electromagnet. An air cylinder support, a groove platform and an optical fiber sensor support are arranged on a testing bench, an air cylinder is arranged on the air cylinder support, a pressing block is arranged on a telescopic rod of the air cylinder, and the optical fiber sensor support is provided with an optical fiber sensor; the optical fiber sensor is connected with an electromagnet electrical performance testing circuit comprising a programmable power supply, the programmable power supply is provided with a positive power interface and a negative power interface and connected with a single chip microcomputer through a data line, and the optical fiber sensor is connected with the single chip microcomputer through a data transmission line. The electrical performance testing device has the advantages that the computer control technique is applied, a microcomputer controls output voltages of the programmable power supply and reads output currents of the programmable power supply through serial communication, and the optical fiber sensor is adopted to convert mechanical signals showing whether an electromagnet armature stretches out into high and low level signals. The whole testing process does not need manual intervention, and the detecting system is high in testing accuracy, reliable in operation, easy to operate and rapid in testing compared with manual testing.

Description

Electromagnet electric performance test device

Technical field

The present invention relates to a kind of electromagnet electric performance test device.

Background technology

Electromagnet is as a kind of electromechanical energy reforming unit, because it is large from heavy and light, suction, it is simple, economical reliable to safeguard, has now been widely used in the numerous areas such as metallurgy, mining, machinery, communications and transportation.The electric property of electromagnet comprises pick-up voltage, off voltage, minimum starting current, keeps electric current, it is the important parameter of electromagnet runnability, also be the important evidence of electromagnet type selecting, thereby the electric property of electromagnet is tested and is necessary.The classic method of electromagnet electric performance test is mainly manual testing, artificial reading, and this method of testing exists that the test duration is long, testing cost is high, precision and the not high shortcoming of reliability.

Summary of the invention

The object of this invention is to provide a kind of electromagnet electric performance test device, this device can carry out electromagnet electric performance test fast, efficient, safely, specifically comprises pick-up voltage, off voltage, minimum starting current, keeps electric current.

Technical scheme of the present invention is, a kind of electromagnet electric performance test device, is equipped with air cylinder support, Baltimore groove platform, Fibre Optical Sensor support at testboard bay, at air cylinder support, cylinder is housed, briquetting is housed on expansion link at cylinder, on Fibre Optical Sensor support, Fibre Optical Sensor is housed; Fibre Optical Sensor connects electromagnet electric performance test circuit, described electromagnet electric performance test circuit comprises programmable power supply, have positive-negative power interface at programmable power supply, programmable power supply is connected by data line with single-chip microcomputer, and Fibre Optical Sensor connects single-chip microcomputer by data line.

The present invention has following technique effect, appliance computer control technology, the output voltage of microcomputer by serial communication controlling programmable power supply also reads electric power outputting current, and the mechanical signal that adopts Fibre Optical Sensor whether electromagnet armature is stretched out is converted into low and high level signal.Test overall process does not need manual intervention, and compared with manual testing, this test system and test precision is high, reliable, simple to operate, test is rapid.

Brief description of the drawings

Fig. 1 is electromagnet electric performance test device for mechanical structural representation.

Fig. 2 is electromagnet electric performance test device circuit connection diagram.

Fig. 3 is that tested electromagnet armature is responded to schematic diagram by Fibre Optical Sensor while stretching out.

Fig. 4 is that tested electromagnet armature is responded to schematic diagram by Fibre Optical Sensor while not stretching out.

Embodiment

As shown in Figure 1, a kind of electromagnet electric performance test device, is equipped with air cylinder support 1, Baltimore groove platform 3, Fibre Optical Sensor support 11 at testboard bay 4, at air cylinder support 1, cylinder 6 is housed, at cylinder 6, briquetting 7 is housed on expansion link, Fibre Optical Sensor 9 is housed on Fibre Optical Sensor support 11.

As shown in Fig. 2 electromagnet electric performance test device circuit connection diagram, Fibre Optical Sensor 9 connects electromagnet electric performance test circuit, and described electromagnet electrical performance test system circuit comprises E3631A programmable power supply 12, Fibre Optical Sensor 9, PIC18F8722 single-chip microcomputer 13; Have positive-negative power interface at programmable power supply 12, programmable power supply 12 is connected by data line with single-chip microcomputer 13, and Fibre Optical Sensor 9 connects single-chip microcomputer 13 by data line.

When measurement: tested electromagnet 2 is placed on Baltimore groove platform 3, start cylinder 6, the expansion link upper holder block 7 of cylinder 6 compresses tested electromagnet 2; The axis of Fibre Optical Sensor 9 and described electromagnet armature 8 axis are 90 degree; Tested electromagnet 2 is powered by programmable power supply 12, and programmable power supply 12 positive-negative power interfaces are connected with tested electromagnet 2 both positive and negative polarities respectively;

When electromagnet armature as tested in Fig. 3 stretches out by as shown in Fibre Optical Sensor induction schematic diagram, when tested electromagnet 9 electric adhesive when electromagnet armature 8 is stretched, will change the optical property of light, described Fibre Optical Sensor is exported to single-chip microcomputer high level;

When electromagnet armature as tested in Fig. 4 does not stretch out, by as shown in Fibre Optical Sensor induction schematic diagram, in the time that tested electromagnet 9 dead electricity disconnections make electromagnet armature 8 pinch in, will change the optical property of light, described Fibre Optical Sensor is exported to single-chip microcomputer low level; Can judge accordingly the whether adhesive of tested electromagnet.

In the time of tested electromagnet 2 pick-up voltage of test, first controlling programmable power supply 12 output voltages is 0V, then increase lentamente output voltage with a fixed step size, single-chip microcomputer 13 constantly reads the level signal that Fibre Optical Sensor 9 transmits simultaneously, in the time that single-chip microcomputer 13 reads high level signal, stop test, now programmable power supply 12 output voltages are tested electromagnet 2 pick-up voltages.

In the time of test electromagnet 2 off voltage, first controlling programmable power supply 12 output voltages is the rated voltage of tested electromagnet 9, then reduce lentamente output voltage with a fixed step size, single-chip microcomputer 13 constantly reads the level signal that Fibre Optical Sensor 9 transmits simultaneously, in the time that single-chip microcomputer 13 reads low level signal, stop test, now programmable power supply 12 output voltages are tested electromagnet 2 off voltages.

In the time of the tested electric electromagnet 2 minimum starting current of test, first controlling programmable power supply 12 output voltages is tested electromagnet 2 pick-up voltages, then single-chip microcomputer 13 reads programmable power supply 12 output currents by data line, and this current value is the minimum starting current of tested electromagnet 2.

In the time that the tested electromagnet 2 of test keeps electric current, first controlling programmable power supply 12 output voltages is tested electromagnet 2 rated voltages, then single-chip microcomputer 13 reads programmable power supply 12 output currents by data line, and this current value is the maintenance electric current of tested electromagnet 2.

Use this electromagnet electrical performance test system to test certain mining intrinsic safety electro magnet, tested electromagnet rated voltage is 12V, and rated current is 120mA; E3631A programmable power supply 12 Voltage-output precision are 5mV, and current measurement precision is 1mA; Test result shows tested electromagnetic actuation voltage 4.125V, off voltage 1V, and minimum starting current 40mA, keeps electric current 118mA.

Claims

1. an electromagnet electric performance test device, it is characterized in that: at testboard bay (4), air cylinder support (1), Baltimore groove platform (3), Fibre Optical Sensor support (11) are housed, at air cylinder support (1), cylinder (6) is housed, at cylinder (6), briquetting (7) is housed on expansion link, Fibre Optical Sensor (9) is housed on Fibre Optical Sensor support (11); Fibre Optical Sensor (9) connects electromagnet electric performance test circuit, described electromagnet electric performance test circuit comprises programmable power supply (12), there is positive-negative power interface at programmable power supply (12), programmable power supply (12) is connected by data line with single-chip microcomputer (13), and Fibre Optical Sensor (9) connects single-chip microcomputer (13).