CN108761328A - Electric tool switch test device and system - Google Patents
Electric tool switch test device and system Download PDFInfo
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- CN108761328A CN108761328A CN201810882342.9A CN201810882342A CN108761328A CN 108761328 A CN108761328 A CN 108761328A CN 201810882342 A CN201810882342 A CN 201810882342A CN 108761328 A CN108761328 A CN 108761328A
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- electric tool
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
The present invention provides a kind of electric tool switch test device and system, which includes host computer, circuit main board, programmable power supply, test fixture and interface module；There are many test programs for load on host computer；Circuit main board includes control panel, variable connector component, multiple function detection modules；Test suite and the fixed structure for fixing tested module UUT are provided on test fixture, test suite passes sequentially through interface module, variable connector component is connected with corresponding function detection module；Host computer is connect with control panel, programmable power supply；Programmable power supply is powered for UUT；Function detection module passes sequentially through variable connector component, interface module and UUT connections.Which improves versatility and the flexibility of electric tool switch test device, effectively cost of the reduction user in terms of designing with maintenance test board, shortens the development cycle, significantly provides the testing efficiency of product, meets the growth requirement more than client's amount sample.
Description
Technical field
The present invention relates to electric tool technical field of measurement and test, more particularly, to a kind of electric tool switch test device and are
System.
Background technology
Electric tool, using motor as the tool of power, is to drive work head to carry out operation by transmission mechanism as a kind of
Hand-held or moveable mechanized tool, it has the features such as easy to carry, easy to operate and safe and reliable.Electric tool is wide
It is general to be applied to every field, and the safety of the switch of electric tool in use is particularly important, so would generally be to electricity
Power driven tools switch carries out the test of indices, such as voltage, electric current, displacement and drive control most small step test index.
The switch finished product of existing electric tool, semi-finished product test system, usually according to the concrete function list for being tested test plate (panel)
The system solely designed, production division carries out production line operation, when assembling test, often produces a type of electronic product, even if
Function is similar to be also required to that supplier designs are a or more money tester tables.Such situation causes user designing and safeguarding survey
Cost in terms of commissioning stage is excessively high, while the period of extended exploitation, has been difficult to meet current client and has measured development more than sample
Demand.
Invention content
In view of this, the purpose of the present invention is to provide a kind of electric tool switch test device and systems, with to difference
The electric tool switch of function is detected, and improves versatility and the flexibility of electric tool switch test device, is effectively dropped
Cost of the low user in terms of designing with maintenance test board, shortens the development cycle, significantly provides the testing efficiency of product, full
Sufficient client measures the growth requirement more than sample.
In a first aspect, an embodiment of the present invention provides a kind of electric tool switch test device, including host computer, circuit master
Plate, programmable power supply, test fixture and interface module；
There are many test programs for load on the host computer；The circuit main board includes control panel, and with the control panel
The variable connector component that is separately connected, multiple function detection modules；Test suite is provided on the test fixture and for solid
Determine the fixed structure of tested module UUT, the test suite pass sequentially through the interface module, the variable connector component with
Corresponding function detection module connection；
The host computer is connect with control panel, programmable power supply；The programmable power supply is connect with the UUT；The function inspection
Module passes sequentially through the variable connector component, the interface module is connect with the UUT for survey.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein institute
It includes matrix switch and relay module to state variable connector component；
The function detection module passes sequentially through the matrix switch, the interface module is connect with the UUT；Or institute
State that function detection module passes sequentially through the relay module, the interface module is connect with the UUT.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides second of first aspect
Possible embodiment, wherein the test fixture further includes conversion terminal row, and the electric tool switch test device is also wrapped
Include contactor module；The relay module connects the contactor module by the interface module, to control the contact
The break-make of device module；
The programmable power supply passes sequentially through the contactor module, conversion terminal row connect with the UUT, with for institute
It states UUT and working power is provided.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiments of first aspect, wherein institute
State interface module include be arranged the circuit main board preceding pinboard and the rear pinboard in the test fixture is set, it is described
Preceding pinboard is connect with the rear pinboard by winding displacement.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of first aspect, wherein institute
It includes master board and relay control panel to state control panel, and the master board is connect with the relay control panel, it is described after
Appliance controling plate is also connected with the relay module.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiments of first aspect, wherein institute
It states and is provided with self-checking circuit on test fixture, the self-checking circuit passes sequentially through the interface module, the variable connector component
It is connect with each function detection module, the self-checking circuit is also connect by the interface module with the control panel.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiments of first aspect, wherein institute
It includes electric machine assembly, displacement sensor module, pressure sensor module to state test suite.
With reference to first aspect, an embodiment of the present invention provides the 7th kind of possible embodiments of first aspect, wherein institute
It includes voltage detection module, resistance detection module, current detection module, displacement detection module, pressure inspection to state function detection module
Survey module, LED light detection module, motor control module, digital input module, signal source output module and analogue load circuit.
With reference to first aspect and its any possible embodiment, an embodiment of the present invention provides the 8th of first aspect the
The possible embodiment of kind, wherein further include monitoring touch screen, the monitoring touch screen is connect with the control panel.
Second aspect, the embodiment of the present invention also provide a kind of electric tool switch test system, including printer, display are set
The standby and electric tool switch test device as described in first aspect and its any possible embodiment；
The printer is connect with the host computer with the display equipment.
The embodiment of the present invention brings following advantageous effect：
In the embodiment of the present invention, which includes host computer, circuit main board, programmable power supply, survey
Try fixture and interface module；There are many test programs for load on host computer；Circuit main board includes control panel, and is distinguished with control panel
The variable connector component of connection, multiple function detection modules；Test suite is provided on test fixture and for fixed tested
The fixed structure of module UUT, test suite passes sequentially through interface module, variable connector component connects with corresponding function detection module
It connects；Host computer is connect with control panel, programmable power supply；Programmable power supply is connect with UUT；Function detection module passes sequentially through variable connector
Component, interface module and UUT connections.Which is provided the power supply of its needs by PC control programmable power supply for different UUT,
Variable connector component can be controlled by host computer and form multi-channel test channel, UUT is connect by interface module with TCH test channel, most
It realizes eventually and individually connection is carried out simultaneously to the UUT on test fixture by TCH test channel by the multiple function detection modules of PC control
Test.Therefore the technical program can be detected the electric tool switch of different function, improve electric tool switch survey
The versatility and flexibility that trial assembly is set effectively reduce cost of the user in terms of designing with maintenance test board, shorten exploitation week
Phase significantly provides the testing efficiency of product, meets the growth requirement more than client's amount sample.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of structural schematic diagram of electric tool switch test device provided in an embodiment of the present invention；
Fig. 2 is another structural schematic diagram of electric tool switch test device provided in an embodiment of the present invention；
Fig. 3 is another structural schematic diagram of electric tool switch test device provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram that electric tool switch provided in an embodiment of the present invention tests system.
Icon：
100- host computers；200- circuit main boards；210- control panels；211- master boards；212- is from control panel；213- relays
Device control panel；220- variable connector components；221- matrix switches；222- relay module；230- function detection modules；300- journeys
Control power supply；310- contactor modules；400- test fixtures；410- test suites；420- conversion terminals are arranged；430- self-checking circuits；
500- interface modules；Pinboard before 510-；Pinboard after 520-；600- monitors touch screen；700- shows equipment；800- is printed
Machine.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Production division carries out production line operation at present, when assembling test, a type of electronic product is often produced, even if work(
It similar can be also required to that supplier designs are a or more money tester tables.Such situation, causes user in design and maintenance test
Cost in terms of board is excessively high, while the period of extended exploitation, has been difficult to meet current client and has measured development need more than sample
It asks.Based on this, a kind of electric tool switch test device and system provided in an embodiment of the present invention can be to the electricity of different function
Power driven tools switch is detected, and provides versatility and the flexibility of electric tool switch test device, is effectively reduced user and is existed
Cost in terms of design and maintenance test board shortens the development cycle, significantly provides the testing efficiency of product, meets client's amount
Growth requirement more than sample.
For ease of understanding the present embodiment, a kind of electric tool switch disclosed in the embodiment of the present invention is surveyed first
Examination installation method describes in detail.
Fig. 1 shows a kind of structural schematic diagram of electric tool switch test device provided in an embodiment of the present invention.Such as Fig. 1
Shown, which includes host computer 100, circuit main board 200, programmable power supply 300, test fixture 400
And interface module 500.
There are many test programs for load on host computer, and circuit main board includes control panel 210, and be separately connected with control panel
Variable connector component 220, multiple function detection modules 230；Test suite 410 is provided on test fixture and for fixed tested
The fixed structure of die trial block UUT (unit under test, tested module), test suite pass sequentially through interface module, multichannel
Switch module is connected with corresponding function detection module；Host computer is connect with control panel, programmable power supply；Programmable power supply connects with UUT
It connects；Function detection module passes sequentially through variable connector component, interface module and UUT connections.
In a possible embodiment, host computer passes through serial communication interface COM (cluster communication
Port, COM) it is connect with programmable power supply and control panel.Specifically, above-mentioned host computer is PC (personal
Computer, personal computer) host, PC hosts are communicated to connect with programmable power supply and control panel by RS232.Control panel with it is each
A function detection module is connected by RS285, which can also increase expansion interface according to RS285 rules, to extend work(
It can detection module.In a possible embodiment, above-mentioned PC hosts can also preserve test data, traced and be analyzed, band
There are multi-path serial communication interface and USB (Universal Serial Bus, universal serial bus) interface.
In a possible embodiment, it includes 1 that above-mentioned control panel, which can select ARM STM32F103ZET6 chips, the chip,
24, road AD acquisition chips, 1 12, tunnel AD acquisition chips.16 × 16 groups of signal groups can be formed additionally by variable connector component
It closes and measures.
In a possible embodiment, function detection module includes voltage detection module, resistance detection module, current detecting mould
Block, displacement detection module, pressure detecting module, LED light detection module, motor control module, digital input module, signal source are defeated
Go out module and analogue load circuit.The function detection module can provide multichannel 0 to the adjustable voltages of 24V and frequency for UUT
It is 0 to 100KHz adjustable square-wave signal as test signal.By integrating each function detection module, facilitate to difference
The exploitation of UUT is debugged.
Specifically, host computer is by a variety of test programs of load, and can realize the quadratic programming to control panel.It is upper upper
Machine realizes the detection to fixed UUT on test fixture by control and debug circuit mainboard.Host computer sends regulation and control detection letter
Number to control panel, so that control panel controls the switch in corresponding variable connector component and opens or be closed.Corresponding function inspection
It surveys module and UUT is connected to by the TCH test channel that the switch and interface module of closure are formed, to send corresponding test signal extremely
UUT, and the feedback signal of UUT is transmitted to corresponding function detection module by TCH test channel and is detected, it is obtained by control panel
Test data after taking function detection module to detect, and it is back to host computer.
In a possible embodiment, above-mentioned test suite includes electric machine assembly, displacement sensor module, pressure sensor mould
Group.Specifically, which includes servo motor.Electric machine assembly simulation Manual press electric tool switch, displacement sensor,
Pressure sensor module and cylinder sensor are used for incuding the displacement of the generation of the electric tool switch, pressure.The test suite
It can also include cylinder sensor module, the cylinder moving in UUT is detected.The UUT that test suite will detect
Detection signal be transmitted to function detection module by interface module and variable connector component and be detected.
In the technical solution that present embodiment provides, providing it by PC control programmable power supply for different UUT needs
The power supply wanted can control variable connector component by host computer and form multi-channel test channel, and UUT is logical with test by interface module
Road connects, and final realize carries out the UUT on test fixture by TCH test channel by the multiple function detection modules of PC control
Individually connects and test.Therefore the technical program can be detected the electric tool switch of different function, improve electronic
The versatility of tool switch test device and flexibility effectively reduce cost of the user in terms of designing with maintenance test board,
Shorten the development cycle, the testing efficiency of product is significantly provided, meets the growth requirement more than client's amount sample.
Referring to Fig. 2 and Fig. 3, it is contemplated that the electric current of each function module, voltage requirements, above-mentioned variable connector component includes square
Battle array switch 221 and relay module 222.For the function detection module of high current or low-voltage, pass sequentially through matrix switch,
Interface module is connect with UUT.Relay module, interface module are passed sequentially through for the function detection module of low current, small voltage
It is connect with UUT.Specifically, realize that logic control switching, the configuration of test signal are more flexible by matrix switch；Wherein relay
Device module can be 32 road two keys relay.
In a possible embodiment, above-mentioned interface module includes being arranged to exist in the preceding pinboard 510 of circuit main board and setting
The rear pinboard 520 of test fixture, preceding pinboard are connect with the rear pinboard by winding displacement.In a possible embodiment, preceding
Pinboard and rear pinboard include the connector of 64 pins.Pinboard is universal adapter plate, including standard connector after wherein.
It is classified according to functions by each output pin of standard connector, the external interface as connection UUT.It will be connect outside this
Mouth is defined as standard interface, and subsequently during the test, user passes through standard interface and its corresponding definition explanation, you can connection
Corresponding UUT.In this way, the standardization of external interface reduces wiring, maintain easily.
In a possible embodiment, above-mentioned test fixture further includes conversion terminal row 420, electric tool switch test device
It further include contactor module 310；Relay module connects the contactor module by interface module, with control contactor module
Break-make.Programmable power supply passes sequentially through contactor module, conversion terminal row connect with UUT, to provide working power for UUT.Also
It is that control panel can be by the break-make of relay come control contactor module, to provide multichannel different voltage and currents for UUT
As working power.
In a possible embodiment, for the ease of the management to modules, above-mentioned control panel includes three sub- control panels,
Respectively master board 211, from control panel 212 and relay control panel 213, master board respectively with relay control panel, from
Control panel connects, and relay control panel is also connected with relay module, therefore host computer can directly be controlled by relay control panel
Relay module processed.STM32 microcontrollers can be used from control panel 212 and relay control panel 213 in above-mentioned master board 211.
In a possible embodiment, above-mentioned master board 211 is for connection matrix switch and dedicated Function detection mould
Block, such as voltage detection module, resistance detection module, current detection module, displacement detection module, the control of pressure detecting module motor
Module, digital input module；The Function detection circuit of connection universal is used for from control panel 212, such as LED light detection module, signal
Source output module and analogue load circuit, consequently facilitating the management to each function detection module, such as extension or deletion.
Specifically, master board 211, between control panel 212 and relay control panel 213 data are carried out by RS232
It exchanges, each sub- control panel includes RS285 communication modules, to realize the communication with external instrument or equipment.
In possible embodiment, self-checking circuit 430 is provided on above-mentioned test fixture, which passes sequentially through
Interface module, variable connector component are connect with each function detection module, and self-checking circuit is also connected by interface module and control panel
It connects.Wherein the self-checking circuit can be detachably arranged in the form of self-test box body on test fixture, for being examined to each function
It surveys module and carries out self-test.Specifically, voltage or test signal are provided to self-checking circuit, so by interface module by control panel
The self-test channel that self-checking circuit is formed by variable connector component and interface module afterwards is cut the self-test signal of feedback corresponding
Function detection circuit has control panel to obtain test data and the analysis of Function detection circuit, to realize each Function detection mould
The self-test of block.Wherein the self-checking circuit can select selftest module in the prior art.
In a possible embodiment, for the ease of the control of user, above-mentioned electric tool switch test device further includes prison
Touch screen 600 is controlled, which connect with control panel.In a possible embodiment, monitoring touch screen passes through RS485 and control
Making sheet connects, and is controlled so as to comprehensive each input/output port to control panel, to control each function
Detection module and variable connector component.In a possible embodiment, foregoing circuit mainboard is encapsulated in control cabinet, which touches
Screen is detachably connected with control cabinet.
Specifically, the processing module in the monitoring touch screen is loaded with test program, and user is shown by monitoring touch screen
Interface carry out function selection, self-test can be carried out to different function detection modules, such as detects corresponding function detection module circuit
Break-make, voltage and resistance etc., the test to the corresponding function of UUT can also be selected by interface.Therefore which can be real
Easily debug the self-test of product and function detection module in current family.
Fig. 4 shows a kind of structural schematic diagram of electric tool switch test system provided in an embodiment of the present invention.Such as Fig. 4
Shown, which includes printer 800, display equipment 700 and above-mentioned electric tool switch test dress
It sets.The printer is connect with host computer with display equipment.Printer is connect with host computer by com interface or USB interface,
Display equipment is connect with host computer by com interface.
Specifically, printer can be used for printing the test data that is obtained from master control borad of host computer, and display equipment can be with
Show the test data.
Electric tool switch test device in system provided in this embodiment is difference by PC control programmable power supply
UUT provide its needs power supply, variable connector component can be controlled by host computer and form multi-channel test channel, UUT is by connecing
Mouth component is connect with TCH test channel, final to realize by the multiple function detection modules of PC control through TCH test channel to test clip
UUT on tool is individually connected and is tested.Therefore the technical program can examine the electric tool switch of different function
It surveys, improves versatility and the flexibility of electric tool switch test device, effectively reduce user in design and maintenance test machine
Cost in terms of platform shortens the development cycle, significantly provides the testing efficiency of product, meets the development need more than client's amount sample
It asks.
Electric tool switch provided in an embodiment of the present invention tests system, the electric tool switch provided with above-described embodiment
Test device technical characteristic having the same reaches identical technique effect so can also solve identical technical problem.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of electric tool switch test device, which is characterized in that including host computer, circuit main board, programmable power supply, test clip
Tool and interface module；
There are many test programs for load on the host computer；The circuit main board includes control panel, and is distinguished with the control panel
The variable connector component of connection, multiple function detection modules；Test suite is provided on the test fixture and for fixing quilt
The fixed structure of test module UUT, the test suite pass sequentially through the interface module, the variable connector component with it is corresponding
Function detection module connection；
The host computer is connect with control panel, programmable power supply；The programmable power supply is connect with the UUT；The Function detection mould
Block passes sequentially through the variable connector component, the interface module is connect with the UUT.
2. electric tool switch test device according to claim 1, which is characterized in that the variable connector component includes
Matrix switch and relay module；
The function detection module passes sequentially through the matrix switch, the interface module is connect with the UUT；Or the work(
Detection module passes sequentially through the relay module to energy, the interface module is connect with the UUT.
3. electric tool switch test device according to claim 2, which is characterized in that the test fixture further includes turning
Connecting terminal is arranged, and the electric tool switch test device further includes contactor module；The relay module passes through the interface
Component connects the contactor module, to control the break-make of the contactor module；
The programmable power supply passes sequentially through the contactor module, conversion terminal row connect with the UUT, to be described
UUT provides working power.
4. electric tool switch test device according to claim 1, which is characterized in that the interface module includes setting
Turn afterwards with described with the rear pinboard in the test fixture, the preceding pinboard is arranged in the preceding pinboard of the circuit main board
Fishplate bar is connected by winding displacement.
5. electric tool switch test device according to claim 1, which is characterized in that the control panel includes main control
Plate and relay control panel, the master board are connect with the relay control panel, and the relay control panel is also connected with institute
State relay module.
6. electric tool switch test device according to claim 1, which is characterized in that be provided on the test fixture
Self-checking circuit, the self-checking circuit pass sequentially through the interface module, the variable connector component and each function detection module
Connection, the self-checking circuit are also connect by the interface module with the control panel.
7. electric tool switch test device according to claim 1, which is characterized in that the test suite includes motor
Component, displacement sensor module, pressure sensor module.
8. electric tool switch test device according to claim 1, which is characterized in that the function detection module includes
Voltage detection module, resistance detection module, current detection module, displacement detection module, pressure detecting module, LED light detect mould
Block, motor control module, digital input module, signal source output module and analogue load circuit.
9. according to claim 1-8 any one of them electric tool switch test devices, which is characterized in that further include that monitoring is touched
Screen is touched, the monitoring touch screen is connect with the control panel.
10. a kind of electric tool switch tests system, which is characterized in that including printer, display equipment and as claim 1 to
9 any one of them electric tool switch test devices；
The printer is connect with the host computer with the display equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882342.9A CN108761328A (en) | 2018-08-03 | 2018-08-03 | Electric tool switch test device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882342.9A CN108761328A (en) | 2018-08-03 | 2018-08-03 | Electric tool switch test device and system |
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| CN108761328A true CN108761328A (en) | 2018-11-06 |
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| CN112240949A (en) * | 2019-07-18 | 2021-01-19 | 中车长春轨道客车股份有限公司 | Test apparatus and control method thereof |
| CN113030526A (en) * | 2021-03-18 | 2021-06-25 | 长江存储科技有限责任公司 | Test switching device and test system |
| CN113325823A (en) * | 2021-05-31 | 2021-08-31 | 重庆川仪速达机电有限公司 | Automatic testing system and method for diesel engine monitor |
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