CN201203627Y - Auto-switch power supply device for test and test system composed by the same - Google Patents
Auto-switch power supply device for test and test system composed by the same Download PDFInfo
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- CN201203627Y CN201203627Y CNU2008201147569U CN200820114756U CN201203627Y CN 201203627 Y CN201203627 Y CN 201203627Y CN U2008201147569 U CNU2008201147569 U CN U2008201147569U CN 200820114756 U CN200820114756 U CN 200820114756U CN 201203627 Y CN201203627 Y CN 201203627Y
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Abstract
The utility model discloses an automatic switch power supply device for testing and a test system thereof. The automatic switch power supply device comprises an automatic control circuit, n test circuits connected to an apparatus to be tested and a working power supply circuit, where n>=1. The automatic control circuit comprises a central control unit and a computer communication circuit, wherein the central control unit is connected to a computer via the computer communication circuit. The test circuits connected to an apparatus to be tested comprises a power supply switch control circuit, and a working power supply input-output circuit of an apparatus to be tested. The power switch control circuit includes a relay and a contactor, and is connected to the automatic control circuit and the working power supply input-output circuit of an apparatus to be test. The working power supply input-output circuit of an apparatus to be tested is connected to an apparatus to be tested. The device can flexibly control the automatic switch of the working power supply of an apparatus to be tested having different voltage amplitudes.
Description
Technical field
The utility model relates to a kind of device of Switching Power Supply, relates in particular to a kind of automatic switch supply unit that is used to test and the test macro of formation thereof.
Background technology
Along with the integrated level of all kinds of electrical equipments is more and more higher, also more and more higher to the requirement of equipment stable operation, this just requires in the development stage more comprehensive to the test of equipment.In test to the equipment that adopts the low-tension supply power supply, particularly in the test to the equipment that adopts the Dc low voltage power supply power supply in the communication system, the power-on and power-off test that an important test event is arranged is exactly power supply, this test can excite various faults.
Generally, whole test process need be carried out up to a hundred times even thousands of inferior power-on and power-off repeatedly test.But, when carrying out the power-on and power-off test, still adopt manual type, at present as manual control power switch.At first, test process needs personnel to operate and follow the tracks of all the time, owing to the non-working time that has personnel makes test be forced to interrupt, causes whole test duration prolongation, cost height; Secondly, the time that powers on during manual operation at every turn, cuts off the power supply is difficult to guarantee consistent, is particularly requiring the power-on time utmost point in short-term, and the manual operation difficulty is bigger, thereby the consistance of test operation is difficult to guarantee; The 3rd because be manually-operated and record, so the number of times of equipment power-on and power-off, each test records such as interval time intuitively and easily do not make mistakes, so the accuracy of test record can not guarantee.To sum up, adopt manual control mode to carry out the power-on and power-off test, have that cost height, testing efficiency are low, accuracy is difficult to defectives such as assurance.
China utility model patent instructions CN 200520073125.3 discloses a kind of switch electric device that is used to test.The disclosed a kind of switch electric device that is used to test of this utility model patent, comprise power-supplying circuit and hand control switch circuit, wherein also comprise: computer operated switch circuit, independent control switch circuit, control mode are selected circuit, contactor drive circuit and controlled contactor, and computer operated switch circuit, independent control switch circuit and hand control switch circuit select circuit to be connected with control mode respectively; Control mode selects circuit to be connected with contactor drive circuit; Contactor drive circuit is connected with controlled contactor; Controlled contactor is connected with equipment under test; Computer operated switch circuit, independent control switch circuit, hand control switch circuit, control mode select circuit, contactor drive circuit to be connected with power-supplying circuit.
Comprise three kinds of gauge tap circuit in this utility model switch electric device: the hand control switch circuit, independent control switch circuit and computer operated switch circuit, wherein the hand switch control circuit is to produce circuit by manual control signal directly equipment under test to be carried out the switch electrical testing, according to the record in claims, the user can use button, pullswitch, in the toggle switch one or more manually carry out the operation to equipment under test switch electricity, the mode of this gauge tap electricity can not be carried out the power-on and power-off test to equipment under test automatically, the accuracy and the consistance of test can not guarantee, and testing efficiency is low; The independent control switch circuit test, comprise that the on time regulating circuit of being made up of adjustable potentiometer, unused time regulating circuit, the local control signal be made up of adjustable potentiometer and 555 timers produce circuit etc., promptly utilize hardware mode to produce the operation that square-wave signal comes equipment under test is carried out power-on and power-off fully, because the parameter consistency of various components and parts individualities can not guarantee and the existence of noise in the circuit, make the accuracy of test to guarantee; The detailed process of computer operated switch circuit test is not introduced, just put down in writing and comprised the computer interface adapter circuit in the computer operated switch circuit, this computer interface adapter circuit is the parallel port connecting line through transforming or self-control stube cable and corresponding connector, promptly utilize the direct square-wave signals that are used to test of exporting such as parallel port of computing machine, the quality of square-wave signal can not guarantee in this case, therefore can not guarantee the accuracy of testing.
In the disclosed switch electric device that is used for testing of this utility model, power control circuit has only adopted contactor, for the switch control of the equipment under test of little current loading and inapplicable, and can't have power supply concurrently and has delayed function.They are two years old, this utility model switch electric device is adopted with the road control mode the equipment under test working power, be after equipment under test working power and equipment under test link circuit are fixed, the power source voltage amplitude is also fixing during test, can't provide the power supply of different voltage magnitudes that equipment under test is carried out the power-on and power-off operation flexibly, and can only carry out switch control to one road power supply, when the power supply of the different voltage magnitudes of the two-way on the particularly same equipment under test of two-way power supply being controlled simultaneously as need, then need two devices, be inconvenient to use.They are three years old, this utility model switch electric device can't be known the running status of equipment under test in test process, after equipment under test occurs unusually in test process, still can proceed switch electricity operation, can't the retention fault status information and in time stop test according to fault status information.In addition, this utility model switch electric device can't show that test record is not directly perceived in real time to the power switch number of times.
The utility model content
One of the purpose of this utility model is, a kind of automatic switch supply unit that is used to test is provided, and this device can carry out the automatic switch electric control to the equipment under test working power of different voltage magnitudes neatly.
The technical solution adopted in the utility model is, a kind of automatic switch supply unit that is used to test comprises that automatic control circuit, n are connected test circuit, automatic switch supply unit working power circuit with equipment under test, wherein, and n 〉=1.Described automatic control circuit comprises central control unit and computing machine communicating circuit, and described central control unit links to each other with computing machine by described computing machine communicating circuit.The described test circuit that is connected with equipment under test comprises power on-off control circuit, equipment under test working power imput output circuit.Described automatic control circuit links to each other with described power on-off control circuit, and described central control unit sends control signal to described power on-off control circuit, as the switch electricity time etc.Described power on-off control circuit links to each other with described automatic control circuit, described equipment under test working power imput output circuit.Described equipment under test working power imput output circuit links to each other with equipment under test.Described automatic switch supply unit working power circuit links to each other with described automatic control circuit, described power on-off control circuit.
As a kind of preferred version, described power on-off control circuit is the first control mode circuit, described first control mode comprises relay and contactor, described relay links to each other with automatic control circuit, described contactor links to each other with described equipment under test working power imput output circuit, and the described first control mode circuit can carry out the switch electric control to equipment under test according to waveform signal.
As a kind of preferred version, described power on-off control circuit is the second control mode circuit, the described second control mode circuit is for having delayed on-off circuit, the described input end that has delayed on-off circuit links to each other with described automatic control circuit, and the described output terminal that has delayed on-off circuit is connected to described equipment under test working power imput output circuit.The described second control mode circuit can also be controlled the electrifying startup time of equipment under test working power except carrying out the switch electric control to equipment under test according to waveform signal.
As a kind of preferred version, described automatic switch supply unit also comprises power switch control mode selection circuit, described power on-off control circuit comprises the first control mode circuit and the second control mode circuit, the described first control mode circuit comprises relay and contactor, the described second control mode circuit is for having delayed on-off circuit, described relay, the described input end that has delayed on-off circuit links to each other with automatic control circuit, described contactor, the described output terminal that has delayed on-off circuit selects the input end of circuit to link to each other with described power switch control mode, and described power switch control mode selects the output terminal of circuit to link to each other with described equipment under test working power imput output circuit.It is the alternative circuit that described power switch control mode is selected circuit, and the user can manually control described power switch control mode and select circuit to select a function of finishing described power on-off control circuit from the described first control mode circuit and the second control mode circuit.
As a kind of preferred version, described automatic switch supply unit also comprises and the equipment under test communicating circuit, describedly link to each other with described central control unit with the equipment under test communicating circuit, set up communication for equipment under test and the utility model automatic switch supply unit, make described switching power unit in time receive the work state information of equipment under test.
As a kind of preferred version, described automatic control circuit also comprises the button control signal generation circuit, and the button control signal generation circuit links to each other with described central control unit, and the key command that the user is imported issues control command by described central control unit.
As a kind of preferred version, described automatic switch supply unit also comprises and showing and counting circuit, described demonstration and counting circuit are made up of display circuit and real-time counting circuit, and button control signal generation circuit described in the described automatic control circuit is continuous with corresponding described real-time counting circuit.Described automatic switch supply unit working power circuit links to each other with counting circuit with demonstration, for the real-time counting circuit provides working power.
As a kind of preferred version, described power on-off control circuit also comprises the isolation drive module, the input end of described isolation drive module receives the control signal of sending from described automatic control circuit, described isolation drive module output terminal connects the input end of relay or has delayed the input end of on-off circuit, the effect of described isolation drive module is the dangerous big electric current of isolating moment, amplification input signal can select optocoupler as the isolation drive module simultaneously.
Another object of the present invention is to, a kind of test macro that adopts described automatic switch supply unit is provided, described test macro comprises described automatic switch supply unit, the computer software control unit, n equipment under test working power, n 〉=1, n equipment under test working power is by the first equipment under test working power arranged side by side, ..., n equipment under test working power constitutes, the output terminal of n equipment under test working power is connected to described automatic switch supply unit, and described computer software control unit links to each other with described computing machine communicating circuit in the described automatic switch supply unit by serial line interface.
As a kind of preferred version, described test macro also comprises the equipment under test that links to each other with the automatic switch supply unit respectively.Described automatic switch supply unit carries out automatic switch control to n equipment under test working power respectively according to the key command that the order and the user of computer software control unit setting sends by described button control signal generation circuit, and the power supply that will be used to test outputs to equipment under test respectively again.Like this, described test macro just can need the part of working power to carry out the switch electrical testing to n in the equipment under test.Described equipment under test reports information such as duty with the equipment under test communicating circuit to described automatic switch supply unit by described.
As a kind of preferred version, described test macro also comprises n the equipment under test that links to each other with the automatic switch supply unit respectively.Described automatic switch supply unit carries out automatic switch control to n equipment under test working power respectively according to the key command that the order and the user of computer software control unit setting sends by described button control signal generation circuit, and the power supply that will be used to test outputs to n corresponding equipment under test respectively again.Like this, test macro just can carry out the switch electrical testing to n equipment under test.N equipment under test reports information such as duty with the equipment under test communicating circuit to described automatic switch supply unit by described.
Adopt technique scheme, the utility model has following advantage at least:
The automatic switch supply unit that the utility model is used to test does not need artificial participation in the test process, greatly reduced labour intensity and human cost.The test event of employing the utility model automatic switch supply unit can be included the integration environment of automatic test in, in test environments such as high low-temperature test, high temperature ageing very important meaning is arranged all;
The automatic switch supply unit that the utility model is used to test can carry out communication with equipment under test, monitors the equipment under test running status in real time, avoids proceeding when equipment under test breaks down the switch electrical testing;
The automatic switch supply unit that the utility model is used to test shows the switch electricity number of times to equipment under test in real time, is convenient to observe and record;
The utility model adopts the test macro of described automatic switch supply unit to adopt computer software control, and the accurate and abundant consistance that guarantees test of switch electricity time has improved testing efficiency;
The utility model adopts the test macro of described automatic switch supply unit to control the equipment under test working power of the different voltage magnitudes of multichannel simultaneously, and can control the sequencing that multichannel equipment under test working power powers on to equipment under test by delaying circuit, can test simultaneously a plurality of equipment under tests, simultaneously, the test for the equipment under test of many power works has crucial meaning.
Description of drawings
The automatic switch supply unit first embodiment overall construction drawing that Fig. 1 is used to test for the utility model;
The automatic switch supply unit second embodiment overall construction drawing that Fig. 2 is used to test for the utility model;
Automatic switch supply unit the 3rd embodiment overall construction drawing that Fig. 3 is used to test for the utility model;
Automatic switch supply unit the 4th embodiment overall construction drawing that Fig. 4 is used to test for the utility model;
The test macro first embodiment synoptic diagram of Fig. 5 described automatic switch supply unit for the utility model adopts;
The test macro second embodiment synoptic diagram of Fig. 6 described automatic switch supply unit for the utility model adopts;
The test macro second embodiment specific implementation figure of Fig. 7 described automatic switch supply unit for the utility model adopts;
Fig. 8 is the schematic diagram of the function of Fig. 7 repeat circuit and contactor control circuit;
Fig. 9 is a metal-oxide-semiconductor control circuit schematic diagram of the function among Fig. 7;
Figure 10 is that the power switch control mode is selected the circuit function schematic diagram among Fig. 7;
Figure 11 is a key control circuit schematic diagram of the function among Fig. 7;
Figure 12 is a voltage conversion circuit schematic diagram of the function among Fig. 7.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the automatic switch supply unit that is used to test that the utility model proposes and the test macro of formation thereof, describe in detail as after.
The automatic switch supply unit first embodiment general structure that the utility model is used to test as shown in Figure 1, described automatic switch supply unit comprises automatic switch supply unit working power circuit 101, a n demonstration and counting circuit, n is individual and equipment under test communicating circuit, automatic control circuit 102, a n power on-off control circuit, a n equipment under test working power imput output circuit, n 〉=1.
Described automatic control circuit 102 comprises central control unit 102-1, computing machine communicating circuit 102-2, a n button control signal generation circuit.N button control signal generation circuit by the first button control signal generation circuit arranged side by side ..., n button control signal generation circuit constitutes.N button control signal generation circuit all links to each other with described central control unit 102-1, and described central control unit 102-1 links to each other with computing machine communicating circuit 102-2.Described computing machine communicating circuit 102-2 and described n are individual to include serial communication circuit, serial interface cable connection and corresponding connector with the equipment under test communicating circuit.In described and the equipment under test communicating circuit, described serial communication circuit is connected with described central control unit 102-1 in the described automatic control circuit, and links to each other with equipment under test with connector by serial interface cable connection.
N show and counting circuit by first demonstration and the counting circuit arranged side by side, ..., n shows and counting circuit constitutes, show and counting circuit is made up of display circuit and real-time counting circuit, and continuous by described button control signal generation circuit corresponding in described real-time counting circuit and the described automatic control circuit 102.
N and equipment under test communicating circuit by arranged side by side first with the equipment under test communicating circuit ..., n constitutes with equipment under test news circuit, simultaneously links to each other with the PORT COM of equipment under test with the equipment under test communicating circuit, simultaneously is connected to central control unit 102-1.
N equipment under test working power imput output circuit be by the first controlled measurement equipment working power imput output circuit arranged side by side ..., n equipment under test working power imput output circuit constitutes.
N power on-off control circuit by first power on-off control circuit arranged side by side ..., the n power on-off control circuit constitutes, power on-off control circuit comprises relay and contactor, described relay links to each other with automatic control circuit 102, and described contactor is continuous with corresponding described equipment under test working power imput output circuit.Described contactor need be selected according to the difference of equipment under test, selects D.C. contactor when equipment under test is direct current supply, selects A.C. contactor when equipment under test is Alternating Current Power Supply.Described relay can be electromagnetic relay, and described contactor is a normally open contactor, and when the utility model automatic switch supply unit was not opened, equipment under test was in off-position, guarantees safety.
Described automatic switch supply unit working power circuit 101 links to each other with counting circuit with described automatic control circuit 102, power on-off control circuit and demonstration, for the utility model automatic switch supply unit and equipment under test provide working power.
Present embodiment is applicable to when the equipment under test load current is big, to the switch electric control of equipment under test.
The automatic switch supply unit second embodiment general structure that the utility model is used to test as shown in Figure 2, described power on-off control circuit comprises relay, described relay one side links to each other with automatic control circuit 202, and one side links to each other with described equipment under test working power imput output circuit.When the signal that is used to control of input is high level, the action of described contact, the conducting of described equipment under test working power imput output circuit is for equipment under test provides testing power supply.Present embodiment is applicable at the equipment under test load current hour, to the switch electric control of equipment under test.
Automatic switch supply unit the 3rd embodiment general structure such as Fig. 3 that the utility model is used to test.Present embodiment also comprises n equipment under test working power switch control mode selection circuit outside the basic composition that has comprised automatic switch supply unit described in the utility model automatic switch supply unit first embodiment.Described power on-off control circuit also comprises and has delayed on-off circuit.N equipment under test working power switch control mode selects circuit to select circuit by the first equipment under test working power switch control mode arranged side by side, ..., n equipment under test working power switch control mode selects circuit to constitute, wherein, it is an alternative circuit that each equipment under test working power switch control mode is selected circuit, can adopt a kind of as selector switch in resistance choosing weldering, the protective tube choosing weldering.
The described on-off circuit one side of having delayed links to each other with automatic control circuit 302, and one side connects corresponding described equipment under test working power switch control mode simultaneously and selects circuit and described equipment under test working power imput output circuit.The described on-off circuit that delayed can be controlled the electrifying startup time of equipment under test working power.
Automatic switch supply unit the 4th embodiment general structure that the utility model is used to test as shown in Figure 4.Automatic switch supply unit general structure is basic identical described in the present embodiment and first embodiment, difference is that described power on-off control circuit only comprises and has delayed on-off circuit, the described on-off circuit one side of having delayed links to each other with automatic control circuit 402, and one side connects described equipment under test working power imput output circuit simultaneously.
Test macro first embodiment that the utility model adopts described automatic switch supply unit as shown in Figure 5, PC 5-2 is connected with the automatic switch supply unit 5-1 that is used to test by serial ports, order with the PC software setting, as the cycle of power switch time, the waveform signal that is used to control and the form in the phase etc. weekly, waveform signal can be square wave or triangular wave etc., passes to the automatic switch supply unit 5-1 that is used to test.
Automatic switch supply unit working power 5-3, a n equipment under test working power link to each other with the automatic switch supply unit 5-1 that is used to test respectively, described automatic switch supply unit working power 5-3 provides working power for described automatic switch supply unit 5-1, and described automatic switch supply unit 5-1 carries out automatic switch control to n equipment under test working power respectively according to the order of PC software setting.The output terminal of n equipment under test working power is connected to automatic switch supply unit 5-1, the power supply that will be used to test again of described automatic switch supply unit 5-1 outputs to equipment under test 5-4, at this moment, order by the PC software setting just can need the part of working power to carry out the switch electrical testing to n among the described equipment under test 5-4 is individual, and the order of PC software setting can also be controlled the time that n equipment under test working power powers on.
N equipment under test working power by the first equipment under test working power arranged side by side ..., n equipment under test working power constitutes, the voltage magnitude of n equipment under test working power can be the same or different.Described equipment under test 5-4 reports information such as duty by communication interface to the automatic switch supply unit 5-1 that is used to test.
Test macro second embodiment that the utility model adopts described automatic switch supply unit as shown in Figure 6, PC 6-2 is connected with the automatic switch supply unit 6-1 that is used to test by serial ports, order with the PC software setting, as the power switch time, pass to the automatic switch supply unit 6-1 that is used to test.
Automatic switch supply unit working power 6-3, a n equipment under test working power link to each other with the automatic switch supply unit 6-1 that is used to test respectively, and described automatic switch supply unit working power 6-3 provides working power for described automatic switch supply unit 6-1.N equipment under test working power is by the first equipment under test working power arranged side by side, ..., n equipment under test working power constitutes, the output terminal of n equipment under test working power is connected to the automatic switch supply unit 6-1 that is used to test, the power supply that will be used to test again of described automatic switch supply unit 6-1 outputs to n corresponding equipment under test respectively, particularly, the output terminal of the first equipment under test working power is connected to first equipment under test, ..., the output terminal of n equipment under test working power is connected to the n equipment under test, and just can to equipment under test carry out switch electrical testing by the order of PC software setting this moment.The voltage magnitude of n equipment under test working power can be the same or different.N equipment under test reports information such as duty by the communication interface that is connected with the automatic switch supply unit 6-1 that is used to test separately to the automatic switch supply unit 6-1 that is used to test respectively.
The utility model adopts among test macro second embodiment of described automatic switch supply unit specific implementation figure as shown in Figure 7, and present embodiment is realized the control to two-way equipment under test working power.The central control unit 702 of the automatic switch supply unit that is used to test comprises MCU system, serial ports expansion chip UART and reset key, and wherein, the MCU system is made up of MCU chip and configuration circuit, and the MCU chip is a kind of of single-chip microcomputer.The MCU system expands 3 road serial line interface RS232 by serial ports expansion chip UART, wherein one the tunnel is connected with the debug serial port Debug232 of computer software control unit 706 communications, and two-way connects and equipment under test communication serial ports in addition: the first communication serial ports Test232-1 and the second communication serial ports Test232-2.The duty and the failure message of equipment under test can be sent to the MCU system with equipment under test communication serial ports.Computer software control unit 706 sends the order that is provided with of power switch time, send the order that is provided with of power switch time to debug serial port Debug232 by serial ports of computers, debug serial port Debug232 passes to the MCU system by serial ports expansion chip UART with the order that is provided with of power switch time.The MCU system is according to the waveform signal that order provides frequency and EDM Generator of Adjustable Duty Ratio that is provided with of power switch time, waveform signal can be square wave or triangular wave etc., two pins by the MCU chip are sent into programmable logic controller (PLC) EPLD, programmable logic controller (PLC) EPLD with the square-wave signal of input through controlled signal after the filtering processing module, described control signal is used for controlling first relay and contactor control circuit 703-11, the action of second relay and contactor control circuit 703-21 or the first metal-oxide-semiconductor control circuit 703-12 and the second metal-oxide-semiconductor control circuit 703-22, thus realize that A group equipment under test working power and B organize the break-make of equipment under test working power.The push button signalling that programmable logic controller (PLC) EPLD receives the first key control circuit 705-1 and the second key control circuit 705-2 to produce, the described first key control circuit 705-1 comprises that first begins/stop key and the first counting zero clearing button, the described second key control circuit 705-2 comprises that second begins/stop key and the second counting zero clearing button, described push button signalling is given MCU system after through the filtering processing module, carries out corresponding actions MCU system and can indicate the output of controlling square-wave signal, stop output and counting zero clearing according to user's button.Simultaneously, programmable logic controller (PLC) EPLD has also comprised the first real-time counting module, the second real-time counting module, these two real-time counting modules are counted the square-wave signal of two pins of MCU chip input respectively, and then respectively by first driver module, second driver module drive a LED charactron, the 2nd LED charactron shows count results.First via equipment under test working power is connected to first relay and the contactor control circuit and the first metal-oxide-semiconductor control circuit simultaneously by A group equipment under test working power input end, the output of two parts circuit is selected circuit 704-1 through first, and final output is connected to equipment under test by A group equipment under test working power output terminal.The second road equipment under test working power is connected to second relay and the contactor control circuit and the second metal-oxide-semiconductor control circuit simultaneously by B group equipment under test working power input end, the output of two parts circuit is selected circuit 704-2 through second, and final output is connected to equipment under test by B group equipment under test working power output terminal.In the present embodiment, for the ease of in communication system, using the working power employing-48V power supply input of automatic switch supply unit.Because of the central control unit in the automatic switch supply unit 702, programmable logic controller (PLC) EPLD, LED charactron, relay and contactor control circuit, metal-oxide-semiconductor control circuit etc. all need to use the 3.3V power supply, so be that 3.3V powers by the DC/DC module 701 general-48V power source conversion of-48VTo3.3V.
In the present embodiment, the square wave number of times that the MCU chip can be set by computer software control unit 706 be that the signal period number is realized stopping automatically after test is finished, also can by by the beginning of key control test, stop and counting zero clearing.Therefore, in long test process, in case equipment under test breaks down in the time of need stopping to test, failure message is by passing to the MCU system with equipment under test communication serial ports, the MCU system stops test after can counting up to according to the 706 default signal periods of computer software control unit, also can carry out corresponding action according to beginning/the stop key signal and the counting zero clearing push button signalling of user's input.
In the present embodiment, the schematic diagram of the function of relay and contactor control circuit as shown in Figure 8, metal-oxide-semiconductor control circuit schematic diagram of the function as shown in Figure 9, final control signal, such as the square-wave signal of frequency and EDM Generator of Adjustable Duty Ratio, can be used for pilot relay and contactor control circuit and metal-oxide-semiconductor control circuit.Among Fig. 8, square-wave signal is the signal of 3.3V for the amplitude of programmable logic controller (PLC) EPLD output, after the isolation drive module, the coil that is used for pilot relay, the effect of described isolation drive module is the dangerous big electric current of isolating moment, amplification input signal can select optocoupler as the isolation drive module simultaneously.When the big measuring current of needs, the contact of relay can be connected with the coil of contactor, the contact of contactor is connected simultaneously with input end, the equipment under test working power relay mode output terminal of equipment under test working power or disconnects, and realizes the switch of equipment under test working power is controlled by the control of relay to contactor.Relay and contactor are formed by coil and contact.
The metal-oxide-semiconductor control circuit comprises circuit ingredients such as metal-oxide-semiconductor, optocoupler and electric capacity, what wherein metal-oxide-semiconductor was selected is N type metal-oxide-semiconductor (being called for short the NMOS pipe), electric capacity is connected between the source electrode and drain electrode of NMOS pipe, square-wave signal is controlled turning on and off of NMOS pipe through the isolation drive module, adopts the light-coupled isolation driver module herein.The source electrode of NMOS pipe is connected with equipment under test working power input end, and the drain electrode of NMOS pipe is connected with equipment under test working power metal-oxide-semiconductor control mode output terminal.When square-wave signal is high level, the conducting of optocoupler conducting driving N metal-oxide-semiconductor, equipment under test working power metal-oxide-semiconductor control mode output terminal is communicated with equipment under test working power input end, for equipment under test provides testing power supply.Can realize control by the parameter of change electric capacity, to reach slow role to the electrifying startup time.In Fig. 8 and Fig. 9, the square-wave signal of input is to have added the beginning/stop signal that is produced by button by the control signal that the MCU system sends comprehensively to produce, that is to say, during the control command that the MCU system issues in receiving computer software control unit is carried out the switch electrical testing to equipment under test, also can stop to test, restart by the key command that produces by key control unit among Figure 11 according to the user who receives simultaneously etc.
The power switch control mode is selected the circuit function schematic diagram as shown in figure 10, equipment under test working power relay control mode output terminal and equipment under test working power metal-oxide-semiconductor control mode output terminal are selected circuit through the power switch control mode, finally output to equipment under test working power output terminal, described selection circuit adopts fuse, toggle switch etc. be can also adopt, equipment under test working power relay control mode or equipment under test working power metal-oxide-semiconductor control mode selected for user's manual operation.In addition, the key control circuit among Figure 11 is used for producing beginning, stop signal and reset signal, and reset signal is used for controlling the real-time counting circuit zero clearing in the described automatic switch supply unit.In Fig. 8～Figure 11, relay and contactor control circuit, metal-oxide-semiconductor control circuit, power switch control mode select circuit, key control circuit all to need the 3.3V operating voltage, so in voltage conversion circuit as shown in figure 12, with the conversion of a DC/DC module realization-48V to the 3.3V power supply, if under the situation that AC power can only be provided, can select for use the AC/DC module to realize the conversion of voltage.
Explanation by embodiment, can be to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the utility model, yet appended diagram only provide with reference to the usefulness of explanation, be not to be used for the utility model is limited.
Claims (11)
1, a kind of automatic switch supply unit that is used to test is characterized in that comprising automatic control circuit, individual test circuit, automatic switch supply unit working power circuit, wherein n 〉=1 of being connected with equipment under test of n;
Described automatic control circuit comprises central control unit and computing machine communicating circuit, described central control unit links to each other with computing machine by described computing machine communicating circuit, describedly be connected test circuit with equipment under test and comprise power on-off control circuit, equipment under test working power imput output circuit, described automatic control circuit links to each other with described power on-off control circuit, described central control unit sends control signal to described power on-off control circuit, described power on-off control circuit one side links to each other with described automatic control circuit, one side links to each other with equipment under test working power imput output circuit, institute's equipment under test working power imput output circuit links to each other with equipment under test, described automatic switch supply unit working power circuit and described automatic control circuit, described power on-off control circuit links to each other.
2, automatic switch supply unit according to claim 1, it is characterized in that, described power on-off control circuit is the first control mode circuit, the described first control mode circuit comprises relay and contactor, described relay links to each other with described automatic control circuit, and described contactor links to each other with described equipment under test working power imput output circuit.
3, automatic switch supply unit according to claim 1, it is characterized in that, described power on-off control circuit is the second control mode circuit, the described second control mode circuit is for having delayed on-off circuit, the described input end that has delayed on-off circuit links to each other with described automatic control circuit, the described output terminal that has delayed on-off circuit is connected to described equipment under test working power imput output circuit, and the described on-off circuit that delayed was controlled the electrifying startup time of equipment under test working power.
4, automatic switch supply unit according to claim 2, it is characterized in that, described automatic switch supply unit also comprises power switch control mode selection circuit, described power on-off control circuit also comprises the on-off circuit that delayed as the second control mode circuit, described relay, the described input end that has delayed on-off circuit links to each other with automatic control circuit, described contactor, the described output terminal that has delayed on-off circuit selects the input end of circuit to link to each other with described power switch control mode, described power switch control mode selects the output terminal of circuit to link to each other with described equipment under test working power imput output circuit, and it is the alternative circuit that described power switch control mode is selected circuit.
According to claim 1 or 2 or 3 or 4 described automatic switch supply units, it is characterized in that 5, described automatic switch supply unit also comprises and the equipment under test communicating circuit, describedly link to each other with described central control unit with the equipment under test communicating circuit.
6, automatic switch supply unit according to claim 5, it is characterized in that, described automatic switch supply unit also comprises and showing and counting circuit, described demonstration and counting circuit are made up of display circuit and real-time counting circuit, button control signal generation circuit described in the described automatic control circuit is continuous with corresponding described real-time counting circuit, and described automatic switch supply unit working power circuit links to each other with counting circuit with demonstration.
7, automatic switch supply unit according to claim 6, it is characterized in that, described automatic control circuit also comprises the button control signal generation circuit, the button control signal generation circuit links to each other with described central control unit, and the key command that the user is imported issues control command by described central control unit.
8, automatic switch supply unit according to claim 7, it is characterized in that, described power on-off control circuit also comprises the isolation drive module, the input end of described isolation drive module receives the control signal of sending from described automatic control circuit, described isolation drive module output terminal connects the input end of relay or has delayed the input end of on-off circuit, described isolation drive module is used for isolating the dangerous big electric current of moment, amplification input signal simultaneously.
9, a kind of test macro that adopts the described automatic switch supply unit of claim 5, it is characterized in that comprising described automatic switch supply unit, the computer software control unit, n equipment under test working power, n 〉=1, n equipment under test working power is by the first equipment under test working power arranged side by side, ..., n equipment under test working power constitutes, the output terminal of n equipment under test working power is connected to described automatic switch supply unit, and described computer software control unit links to each other with described computing machine communicating circuit in the described automatic switch supply unit by serial line interface.
10, test macro according to claim 9, it is characterized in that also comprising the equipment under test that links to each other with described automatic switch supply unit respectively, described automatic switch supply unit carries out automatic switch control to n equipment under test working power respectively, the power supply that will be used to test outputs to equipment under test respectively again, and described equipment under test reports work state information with the equipment under test communicating circuit to described automatic switch supply unit by described.
11, test macro according to claim 9, it is characterized in that also comprising n the equipment under test that links to each other with the automatic switch supply unit respectively, described automatic switch supply unit carries out automatic switch control to n equipment under test working power respectively, the power supply that will be used to test outputs to n corresponding equipment under test respectively again, and n equipment under test reports work state information with the equipment under test communicating circuit to described automatic switch supply unit by described.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201147569U CN201203627Y (en) | 2008-05-14 | 2008-05-14 | Auto-switch power supply device for test and test system composed by the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201147569U CN201203627Y (en) | 2008-05-14 | 2008-05-14 | Auto-switch power supply device for test and test system composed by the same |
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| Publication Number | Publication Date |
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| CN201203627Y true CN201203627Y (en) | 2009-03-04 |
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| CNU2008201147569U Expired - Fee Related CN201203627Y (en) | 2008-05-14 | 2008-05-14 | Auto-switch power supply device for test and test system composed by the same |
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| CN102117237A (en) * | 2009-12-30 | 2011-07-06 | 鸿富锦精密工业（深圳）有限公司 | Test device for motherboard startup and shutdown |
| CN102565461A (en) * | 2012-02-29 | 2012-07-11 | 哈尔滨工业大学 | Real-time on-off times recording device for relay in matrix switch module and method for realizing on-off times recording by employing same |
| CN101738954B (en) * | 2009-11-24 | 2012-09-05 | 中兴通讯股份有限公司 | Device, system and method for switching on or switching off equipment |
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| CN105207469A (en) * | 2015-10-27 | 2015-12-30 | 万高(杭州)科技有限公司 | Power supply for IC verification tool |
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| CN105207469B (en) * | 2015-10-27 | 2018-02-13 | 杭州万高科技股份有限公司 | A kind of power supply of IC verification tools |
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| CN105978637A (en) * | 2016-06-20 | 2016-09-28 | 深圳极智联合科技股份有限公司 | Multi-DUT (Device under Test) testing system and testing method thereof |
| CN106443280A (en) * | 2016-11-21 | 2017-02-22 | 中车兰州机车有限公司 | Traction frequency convertor testing device |
| CN106443280B (en) * | 2016-11-21 | 2023-08-08 | 中车兰州机车有限公司 | Traction frequency converter testing device |
| CN107241596A (en) * | 2017-03-14 | 2017-10-10 | 深圳市帆泰检测技术有限公司 | Television set switch test device |
| CN107608332A (en) * | 2017-09-04 | 2018-01-19 | 西安微电子技术研究所 | A kind of accelerator simulation source single particle radiation electric source for test purposes switching control |
| CN107632538A (en) * | 2017-10-13 | 2018-01-26 | 河北瑞程思科技有限公司 | A kind of more control adapters of fresh air |
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