CN105258720A - Automation testing system and method - Google Patents

Automation testing system and method Download PDF

Info

Publication number
CN105258720A
CN105258720A CN201510740569.6A CN201510740569A CN105258720A CN 105258720 A CN105258720 A CN 105258720A CN 201510740569 A CN201510740569 A CN 201510740569A CN 105258720 A CN105258720 A CN 105258720A
Authority
CN
China
Prior art keywords
test system
power supply
computing machine
test
relay board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510740569.6A
Other languages
Chinese (zh)
Inventor
张一龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Feixun Data Communication Technology Co Ltd
Original Assignee
Shanghai Feixun Data Communication Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Feixun Data Communication Technology Co Ltd filed Critical Shanghai Feixun Data Communication Technology Co Ltd
Priority to CN201510740569.6A priority Critical patent/CN105258720A/en
Publication of CN105258720A publication Critical patent/CN105258720A/en
Pending legal-status Critical Current

Links

Landscapes

  • Tests Of Electronic Circuits (AREA)

Abstract

The invention discloses an automation testing system and method. The system comprises a computer, a relay board, a power supply, and a to-be-tested device. The power supply and the to-be-tested device are connected with the computer through the relay board. The computer is configured to send a testing instruction. The relay board is configured to receive the testing instruction from the computer, and correspondingly connects or disconnects a power supply circuit between the power supply and the to-be-tested circuit, so as to complete automation testing. The system and method employ the relay board to replace a conventional universal interface bus card, thereby reducing the manufacturing cost of a universal interface bus card and a program control power supply, and achieving the testing of the to-be-tested device in a more economical and practical way.

Description

Automatization test system and method for testing thereof
Technical field
The present invention relates to testing for electrical equipment field, particularly relate to a kind of relay board to replace automatization test system and the method for testing thereof of traditional general purpose interface bus card.
Background technology
In a lot of automatic test field (especially factory's automatic electronic test), general purpose interface bus (GeneralPurposeInterfaceBus, GPIB) is widely used in connecting test system and computing machine and transmitting various communication information between which.Fig. 1 is the structural representation of a kind of automatization test system 100 of prior art.As shown in Figure 1, automatization test system 100 comprises computing machine 102, gpib interface card 104, programmable power supply or test instrumentation 106, test system 108 and gpib bus 110, wherein programmable power supply or test instrumentation 106 and test system 108 are connected with computing machine 102 by gpib interface card 104 and gpib bus 110, to complete computing machine 102 (such as, sending the computer of the test instruction) automatic test to test system 108.Programmable power supply can be the programmable power supply of powering for test system 108, and test instrumentation can be for test system 108 tests the test instrumentation of various performance parameters.
But, for the structural design of the automatization test system of this prior art, in extensive manufacture, the quantity of required programmable power supply and gpib interface card is very many, and often opens the very worthy of gpib interface card and programmable power supply, because this increasing a lot of testing cost.In fact, many times, the steering order of programmable power supply in automatic test is relatively single and simple: such as, initialization apparatus; The electric current and voltage of setting voltage and protection; Connect programmable power supply and start test; The electric current of test test system; Test other project; Be completed rear disconnection programmable power supply.In this case, the existence of gpib interface card and programmable power supply is not necessary, causes the unnecessary waste of cost.Such as, can be replaced by instrument designing in advance and Control plate and control programmable power supply and gpib interface card, thus reduce testing cost.
Therefore, need a kind of automatization test system and method for testing thereof of improvement, realize the general test of test system in the mode of more economical practicality.
Summary of the invention
Fundamental purpose of the present invention is the automatization test system and the method for testing thereof that provide a kind of improvement, realizes the general test of test system in the mode of more economical practicality.
For achieving the above object, the invention provides a kind of automatization test system, comprise computing machine, relay board, power supply and test system, described power supply and described test system are connected with described computing machine by described relay board, it is characterized in that: described computing machine, be configured to send test instruction; And described relay board, be configured to receive the described test instruction from described computing machine, and the feed circuit correspondingly connected or disconnected between described power supply and described test system are to complete automatic test.
Further, described relay board comprises: relay-operated controller, is connected with described computing machine, be configured to receive from described computing machine test instruction and correspondingly control switching on and off of at least one relay switch module; And at least one relay switch module described, be connected with described test system with described power supply, be configured to optionally connect or disconnect feed circuit between described power supply and described test system according to the test instruction of described computing machine and the control of described relay-operated controller.
Further, described relay board comprises current measurement circuit, is configured to the current sinking measuring described test system.
Further; described power configuration presets corresponding output voltage and the current parameters of described power supply for the voltage and current parameter required for described test system, and presets protection voltage and the current value of described power supply according to the voltage of described test system and range of current.
Further, described relay board is connected with the communication port of described computing machine, and wherein said test instruction is serial ports test instruction.
The present invention also provides a kind of automated testing method, comprising: be connected with computing machine with test system by power supply by relay board; Test instruction is sent by described computing machine; And receive the described test instruction from described computing machine by described relay board, and the feed circuit correspondingly connected or disconnected between described power supply and described test system are to complete automatic test.
Further, receive the described test instruction from described computing machine by described relay board, and the described step correspondingly connecting or disconnecting the feed circuit between described power supply and described test system comprises: receive the test instruction from described computing machine by the relay-operated controller in described relay board and correspondingly control switching on and off of at least one relay switch module; And optionally connect or disconnect feed circuit between described power supply and described test system by least one relay switch module described according to the control of the test instruction of described computing machine and described relay-operated controller.
Further, described automated testing method also comprises by the current measurement circuit in described relay board to measure the current sinking of described test system.
Further; the described automated testing method voltage and current parameter also comprised required for described test system presets corresponding output voltage and the current parameters of described power supply, and presets protection voltage and the current value of described power supply according to the voltage of described test system and range of current.
Further, the described step sending test instruction by described computing machine comprises: send serial ports test instruction by communication port to described relay board by described computing machine.
Automatization test system provided by the present invention and method of testing relay board thereof replace traditional general purpose interface bus card, thus save the manufacturing cost of the element such as general purpose interface bus card and programmable power supply, the test of test system is realized by the mode of more economical practicality.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of automatization test system of prior art;
The structural representation of a kind of automatization test system that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the detailed construction schematic diagram of the automatization test system of Fig. 2;
Fig. 4 is another structural representation of the automatization test system of Fig. 3; And
The schematic flow sheet of a kind of automated testing method that Fig. 5 provides for the embodiment of the present invention.
Realization of the present invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein is only for instruction and explanation of the present invention, be not intended to limit the present invention, and when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
The structural representation of a kind of automatization test system 200 that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, automatization test system 200 comprises computing machine 202, relay board 204, power supply 206 and test system 208, wherein power supply 206 and test system 208 are connected with computing machine 202 by relay board 204, to complete computing machine 202 (such as, sending the computer of the test instruction) automatic test to test system 108.Computing machine 202 can be configured to and sends test instruction.Relay board 204 can be configured to the test instruction received from computing machine 202, and the feed circuit correspondingly connected or disconnected between power supply 206 and test system 208 are to complete automatic test.In one example, automatization test system 200 also can comprise the test instrumentation (not shown) be connected with test system 208, for test system 208 tests various performance parameters (such as, working current).In another example, test instrumentation (not shown) accessible site (such as, is integrated in the relay-operated controller 302 of Fig. 3) in relay board 204.Can see relative to the traditional approach of Fig. 1, Fig. 2 utilizes relay board to replace programmable power supply and gpib interface card, and particularly power supply 206 can use single channel or multiple-channel output and without the need to able to programme, therefore greatly reduce testing cost.
Automatization test system 200 is set forth further below with reference to Fig. 3.Fig. 3 is the detailed construction schematic diagram of the automatization test system 200 of Fig. 2.As shown in Figure 3, relay board 204 comprises relay-operated controller 302 and multiple relay switch module 304_1,304_2, to 304_N.The communication port of relay-operated controller 302 and the computing machine 202 as test computer or be connected by USB, for receiving the test instruction from computing machine 202, and correspondingly control multiple relay switch module 304_1,304_2, switching on and off (ON/OFF) to 304_N.Multiple relay switch module 304_1,304_2, to be connected to each one end in 304_N with power supply 206, the other end is connected with the feed circuit of test system 208, is configured to optionally connect or disconnect feed circuit between power supply 206 and test system 208 according to the test instruction of computing machine 202 and the control of relay-operated controller 302.
Particularly, computing machine 202 (such as, send the computer of test instruction) control multiple relay switch module 304_1,304_2 by sending serial ports instruction via relay-operated controller 302, switch on and off (ON/OFF) state to the switch (not shown) in 304_N, thus the power supply indirectly reaching control test system 208 switches on and off (ON/OFF) state.Then, measure current sinking by current measurement circuit (not shown, to be integrated in relay board 204 or with test system 208 and to be connected) and obtain the current sinking of test system 208.In this way, general automatic test needs can be met.
In one embodiment; need to preset pertinent instruments parameter; voltage and current parameter such as required for test system 208 presets the corresponding output voltage, current parameters etc. of power supply 206, or presets the protection voltage and current value etc. of power supply 206 according to the voltage of test system 208 and range of current.After setting completes, switch on power 206, make it be in " connecting (ON) " state always.In one embodiment, the control module code of relay board 204 can be added in automated production test procedure.In one embodiment, relay board 204 (such as, relay serial ports control panel) can realize in factory's electronic manufacturing field, as in the production of MiniPCI.
Especially, Fig. 4 is another structural representation of the automatization test system of Fig. 3, and in Fig. 4, in automatization test system 400, test system 208 needs one tunnels power, and namely only needs a relay switch module 304_1.As shown in Figure 4, relay board 204 comprises relay-operated controller 302, relay switch module 304_1 and relay switch 401_1.The communication port of relay-operated controller 302 and the computing machine 202 as test computer or be connected by USB, for receiving the test instruction from computing machine 202, and correspondingly control switching on and off (ON/OFF) of the relay switch 401_1 be connected with relay switch module 304_1.Relay switch module 304_1 is connected with power supply 206 with one end of relay switch 401_1, the other end is connected with the feed circuit of test system 208, for coming optionally for test system 208 provides the power supply from power supply 206 according to the serial command of computing machine 202 and the steering order of relay-operated controller 302.
Particularly, computing machine 202 (such as, send the computer of test instruction) switch on and off (ON/OFF) state by sending serial ports instruction via relay-operated controller 302 pilot relay switch module 304_1 and relay switch 401_1, thus the power supply indirectly reaching control test system 208 switches on and off (ON/OFF) state.Then, measure current sinking by current measurement circuit (not shown, to be integrated in relay board 204 or with test system 208 and to be connected) and obtain the current sinking of test system 208.In this way, general automatic test needs can be met.
The schematic flow sheet of a kind of automated testing method 500 that Fig. 5 provides for the embodiment of the present invention.Fig. 5 can understand further in conjunction with the above description about Fig. 2-Fig. 4, and automated testing method 500 comprises the following steps:
In step 502, connect hardware and make test system be in state to be measured.Such as, power supply 206 and test system 208 are connected with computing machine 202 by relay board 204, and now test system 208 is in state to be measured.Relay board 204 can comprise relay-operated controller 302 and multiple relay switch module 304_1,304_2, to 304_N.The communication port of relay-operated controller 302 and the computing machine 202 as test computer or be connected by USB, for receiving the test instruction from computing machine 202, and correspondingly control multiple relay switch module 304_1,304_2, switching on and off (ON/OFF) to 304_N.Multiple relay switch module 304_1,304_2, to be connected to each one end in 304_N with power supply 206, the other end is connected with the feed circuit of test system 208, for coming optionally for test system 208 provides the power supply from power supply 206 according to the serial command of computing machine 202 and the steering order of relay-operated controller 302.
In step 504; voltage and current parameter required for test system 208 comes the corresponding output voltage, current parameters etc. of pre-set power supply 206; or set the protection voltage and current value etc. of power supply 206 according to the voltage of test system 208 and range of current, make power supply 206 be in connection (ON) state always.Now, be in disconnection (OFF) state due to relay switch module 304_1,304_2, to the switch in 304_N, therefore test system 208 does not also power on.Relay switch module 304_1,304_2, be connected (step 506) with the computing machine 202 as test computer to 304_N by relay-operated controller 302.
In step 508, computing machine sends serial ports test instruction to connect particular relay switch.In one embodiment, automatic test software is opened at computing machine 202 place as test computer, test is started after the information such as test man, job number, sequence number that input is necessary, now testing software to be sent to relay board 204 by communication port switch on power 206 by serial ports test instruction, supply line between particular relay switch module (such as, relay switch module 304_1 and relay switch 401_1) and test system 208.
In step 510, test system 208 starts to power on, and enters each project of test test system 208.Particularly, test event can comprise the current drain of test test system 208, also comprises whether detect the electric current that consumes under different mode of operations of test system 208 up to specification.Therefore, current measurement circuit can also be comprised in relay board 204 to obtain the current value of current consumption.Such as, when test system 208 in running order 1, send acquisition current-order and can obtain current value I1.When test system 208 in running order 2, again send identical acquisition current-order and obtain current value I2.In this way, the method that could be obtained electric current by GPIB card to programmable power supply can not be used, thus reduce production equipment cost.
In step 512, complete test, and computing machine 202 sends corresponding serial ports test instruction by testing software disconnects particular relay switch (such as, relay switch module 304_1 and relay switch 401_1).Now, the power supply of test system 208 stops, and test man takes off test system 208, after changing next test system.Computing machine 202 again sends serial ports instruction and switches on power 206.Until the test (step 514) of next test system, automated testing method 500 gets back to step 508 again.
Advantageously, automatization test system provided by the present invention and method of testing relay board thereof replace traditional general purpose interface bus card, thus save the manufacturing cost of the element such as general purpose interface bus card and programmable power supply, the test of test system is realized by the mode of more economical practicality.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.

Claims (10)

1. an automatization test system, comprises computing machine, relay board, power supply and test system, and described power supply and described test system are connected with described computing machine by described relay board, it is characterized in that:
Described computing machine, is configured to send test instruction; And
Described relay board, be configured to receive the described test instruction from described computing machine, and the feed circuit correspondingly connected or disconnected between described power supply and described test system is to complete automatic test.
2. automatization test system as claimed in claim 1, it is characterized in that, described relay board comprises:
Relay-operated controller, is connected with described computing machine, be configured to receive from described computing machine test instruction and correspondingly control switching on and off of at least one relay switch module; And
At least one relay switch module described, be connected with described test system with described power supply, be configured to optionally connect or disconnect feed circuit between described power supply and described test system according to the test instruction of described computing machine and the control of described relay-operated controller.
3. automatization test system as claimed in claim 1, it is characterized in that, described relay board comprises current measurement circuit, is configured to the current sinking measuring described test system.
4. automatization test system as claimed in claim 1; it is characterized in that; described power configuration presets corresponding output voltage and the current parameters of described power supply for the voltage and current parameter required for described test system, and presets protection voltage and the current value of described power supply according to the voltage of described test system and range of current.
5. automatization test system as claimed in claim 1, it is characterized in that, described relay board is connected with the communication port of described computing machine, and wherein said test instruction is serial ports test instruction.
6. an automated testing method, comprising:
By relay board, power supply is connected with computing machine with test system;
Test instruction is sent by described computing machine; And
Receive the described test instruction from described computing machine by described relay board, and the feed circuit correspondingly connected or disconnected between described power supply and described test system are to complete automatic test.
7. automated testing method as claimed in claim 6, it is characterized in that, receive the described test instruction from described computing machine by described relay board, and the described step correspondingly connecting or disconnecting the feed circuit between described power supply and described test system comprises:
Receive the test instruction from described computing machine by the relay-operated controller in described relay board and correspondingly control switching on and off of at least one relay switch module; And
Feed circuit between described power supply and described test system are are optionally connected or disconnected according to the control of the test instruction of described computing machine and described relay-operated controller by least one relay switch module described.
8. automated testing method as claimed in claim 6, also comprises:
The current sinking of described test system is measured by the current measurement circuit in described relay board.
9. automated testing method as claimed in claim 6, also comprises:
Voltage and current parameter required for described test system presets corresponding output voltage and the current parameters of described power supply, and
Protection voltage and the current value of described power supply is preset according to the voltage of described test system and range of current.
10. automated testing method as claimed in claim 6, it is characterized in that, the described step being sent test instruction by described computing machine comprises:
Serial ports test instruction is sent by communication port to described relay board by described computing machine.
CN201510740569.6A 2015-11-04 2015-11-04 Automation testing system and method Pending CN105258720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510740569.6A CN105258720A (en) 2015-11-04 2015-11-04 Automation testing system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510740569.6A CN105258720A (en) 2015-11-04 2015-11-04 Automation testing system and method

Publications (1)

Publication Number Publication Date
CN105258720A true CN105258720A (en) 2016-01-20

Family

ID=55098502

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510740569.6A Pending CN105258720A (en) 2015-11-04 2015-11-04 Automation testing system and method

Country Status (1)

Country Link
CN (1) CN105258720A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106291060A (en) * 2016-08-29 2017-01-04 深圳天珑无线科技有限公司 A kind of current test of mobile telephone system and current test of mobile telephone method
CN106569139A (en) * 2016-11-01 2017-04-19 惠州Tcl移动通信有限公司 Method and system for dynamically controlling reading of battery temperature through mobile terminal
CN106771914A (en) * 2016-12-13 2017-05-31 深圳市沃特玛电池有限公司 A kind of method of testing and device
CN107677313A (en) * 2017-09-26 2018-02-09 努比亚技术有限公司 Auto-Test System and method
CN109283424A (en) * 2018-11-16 2019-01-29 上海工程技术大学 A kind of test device and method of the four port sensor signal deconcentrators of band LED
CN110531191A (en) * 2019-08-20 2019-12-03 锐捷网络股份有限公司 A kind of POE test macro, method and device
CN112255562A (en) * 2020-10-10 2021-01-22 中车青岛四方机车车辆股份有限公司 System and method for testing performance of direct-current power supply board card
CN114088991A (en) * 2021-11-08 2022-02-25 广东乐心医疗电子股份有限公司 Circuit board testing method, device and system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1801571A (en) * 2004-09-15 2006-07-12 贝尔金公司 Power supply system comprising rechargeable battery pack and attachment apparatus
CN1987509A (en) * 2005-12-23 2007-06-27 英业达股份有限公司 Power detecting system and method
US20110264957A1 (en) * 2010-04-26 2011-10-27 Hon Hai Precision Industry Co., Ltd. Boot test apparatus and method of computer system
CN102246049A (en) * 2011-05-26 2011-11-16 华为终端有限公司 Mobile terminal and load power measuring method thereof
JP2013171444A (en) * 2012-02-21 2013-09-02 Shimadzu Corp Analyzing device
CN103559128A (en) * 2013-10-28 2014-02-05 深圳市宏电技术股份有限公司 Power-on and power-off test circuit and power-on and power-off test device
CN203827365U (en) * 2013-12-19 2014-09-10 上海斐讯数据通信技术有限公司 Automatic power on-off testing apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1801571A (en) * 2004-09-15 2006-07-12 贝尔金公司 Power supply system comprising rechargeable battery pack and attachment apparatus
CN1987509A (en) * 2005-12-23 2007-06-27 英业达股份有限公司 Power detecting system and method
US20110264957A1 (en) * 2010-04-26 2011-10-27 Hon Hai Precision Industry Co., Ltd. Boot test apparatus and method of computer system
CN102246049A (en) * 2011-05-26 2011-11-16 华为终端有限公司 Mobile terminal and load power measuring method thereof
JP2013171444A (en) * 2012-02-21 2013-09-02 Shimadzu Corp Analyzing device
CN103559128A (en) * 2013-10-28 2014-02-05 深圳市宏电技术股份有限公司 Power-on and power-off test circuit and power-on and power-off test device
CN203827365U (en) * 2013-12-19 2014-09-10 上海斐讯数据通信技术有限公司 Automatic power on-off testing apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106291060A (en) * 2016-08-29 2017-01-04 深圳天珑无线科技有限公司 A kind of current test of mobile telephone system and current test of mobile telephone method
CN106291060B (en) * 2016-08-29 2023-12-12 唯科终端技术(东莞)有限公司 Mobile phone current testing system and mobile phone current testing method
CN106569139A (en) * 2016-11-01 2017-04-19 惠州Tcl移动通信有限公司 Method and system for dynamically controlling reading of battery temperature through mobile terminal
CN106771914A (en) * 2016-12-13 2017-05-31 深圳市沃特玛电池有限公司 A kind of method of testing and device
CN107677313A (en) * 2017-09-26 2018-02-09 努比亚技术有限公司 Auto-Test System and method
CN109283424A (en) * 2018-11-16 2019-01-29 上海工程技术大学 A kind of test device and method of the four port sensor signal deconcentrators of band LED
CN109283424B (en) * 2018-11-16 2023-11-24 上海工程技术大学 Testing device and method for four-port sensor signal deconcentrator with LED
CN110531191A (en) * 2019-08-20 2019-12-03 锐捷网络股份有限公司 A kind of POE test macro, method and device
CN110531191B (en) * 2019-08-20 2022-10-14 锐捷网络股份有限公司 POE test system, method and device
CN112255562A (en) * 2020-10-10 2021-01-22 中车青岛四方机车车辆股份有限公司 System and method for testing performance of direct-current power supply board card
CN112255562B (en) * 2020-10-10 2022-12-30 中车青岛四方机车车辆股份有限公司 System and method for testing performance of direct-current power supply board card
CN114088991A (en) * 2021-11-08 2022-02-25 广东乐心医疗电子股份有限公司 Circuit board testing method, device and system

Similar Documents

Publication Publication Date Title
CN105258720A (en) Automation testing system and method
CN105067928A (en) Automobile electronic product dark current automatic test method and device
CN104459566A (en) Secondary electric power supply testing system and method
CN108595299B (en) Test system of terminal equipment
CN109490763B (en) Universal testing device and testing method for single board of relay
CN214480706U (en) Remote debugging equipment and system
CN104614671A (en) Calibration aiding device for time relay and calibration method
CN102096001B (en) Overcurrent and short circuit tester for battery pack protective board
CN103048581A (en) Cable testing device
CN112948186B (en) Detection device and detection method of interface signal
CN105353323A (en) Detection apparatus, and fan detection system and method
CN106803776B (en) Radio frequency front end testing device and radio frequency front end testing method
CN208188289U (en) A kind of test macro of circuit power consumption
CN107682227B (en) Ammeter detection configuration method
CN204347211U (en) A kind of many relay functions proving installation
CN103063948A (en) Electric energy gathering terminal function testing system and method
CN207516987U (en) It is a kind of to support the reliability of multi-USB interface equipment is same to survey device
CN104410467A (en) Antenna turner detecting system
CN104410468A (en) Antenna tuner detecting method
CN106597915B (en) The series-parallel rapid configuration instrument of programmable power supply
CN204069101U (en) A kind of communication interface switching device shifter
CN204116387U (en) A kind of LCD module short circuit test adapter
CN107894545B (en) Intelligent detection method for portable equipment wiring and locomotive signal sensor
CN105403792A (en) Solid state power distribution device reset function testing system and testing method
CN208109940U (en) The separate switching device of relative medium loss and the test of capacitance ratio remotely controlled

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20160120