CN107167729B - Utilize the relay operation time automatic testing equipment and method of trigger pulse control - Google Patents
Utilize the relay operation time automatic testing equipment and method of trigger pulse control Download PDFInfo
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- CN107167729B CN107167729B CN201710381769.6A CN201710381769A CN107167729B CN 107167729 B CN107167729 B CN 107167729B CN 201710381769 A CN201710381769 A CN 201710381769A CN 107167729 B CN107167729 B CN 107167729B
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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
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
Abstract
The invention discloses a kind of relay operation time automatic testing equipments and method using trigger pulse control.Wherein, automatic testing equipment includes: relay array unit, needs relay array to be tested for setting up；Relay on-off automatic control unit, for completing the automatic control got through or disconnected to relay array unit according to the rising edge or failing edge on pulse edge；Direct current signal generates unit, for providing DC level signal for the signal input part of relay array unit；Pulse is along interval calculation unit, for capturing the edge and porch of signal, and calculates the time difference at two edges automatically；Continuous impulse generates unit, for generating two-way synchronization and being in addition sent to relay on-off automatic control unit all the way wherein being sent to pulse all the way along the trigger port of interval calculation unit by the train of pulse that some cycles trigger.The testing efficiency of automatic testing equipment and accuracy of measurement are high in the present invention.
Description
Technical field
The invention belongs to frequency microwave the field of test technology, and in particular to a kind of relay behaviour using trigger pulse control
Make time automatic testing equipment and method.
Background technique
In the prior art to the test device structural block diagram of relay operation time as shown in Figure 1, it is mainly sent out by pulse
The units composition such as raw device, splitter, relay and oscillograph.Due to above-mentioned test device do not utilize synchronized-pulse control after
The on-off of electric appliance, test requires to manually control relay every time, arrives at the time of relay is on or off with pulse signal
It is asynchronous at the time of up to relay input port, there is very big deviation between each test result, if this deviation is larger,
It is possible that it is undesirable to directly result in test result, need to re-start test.In addition, above-mentioned test device is being tested every time
When due to needing to manually control the on-off of relay, need to estimate every time between the time that pulse signal reaches relay input port
Every can just be operated manually, it is manually operated relative to being automatically brought into operation, testing efficiency is low, and the degree of automation is not high.
In conclusion in the prior art to the test device of relay operation time due to not by impulse generator, after
Electric appliance and oscillograph synchronize, therefore test error is larger；There is no the pulse detecting unit control of design specialized in test device
System switches on-off, therefore testing efficiency is low, it is difficult to meet the test of the relay parameter more demanding to make-and-break time.
Summary of the invention
It is an object of the invention to propose a kind of relay operation time automatic testing equipment controlled using trigger pulse,
To improve the efficiency and accuracy tested relay parameter.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of relay operation time automatic testing equipment controlled using trigger pulse, comprising:
Relay array unit needs relay array to be tested for setting up；
Relay on-off automatic control unit, for being completed according to the rising edge or failing edge on pulse edge to relay battle array
The automatic control of column unit got through or disconnected；
Direct current signal generates unit, for providing DC level signal for the signal input part of relay array unit；
Pulse is along interval calculation unit, for capturing the edge and porch of signal, and calculates two edges automatically
Time difference；
Continuous impulse generates unit, the train of pulse for generating two-way synchronization and triggering by some cycles, wherein riches all the way
Pulse is given along the trigger port of interval calculation unit, is in addition sent to relay on-off automatic control unit all the way.
Preferably, the automatic testing equipment further include:
Stop unit is forced, for controlling whether whole flow process will carry out stopping after repeatedly recycling or completing single test
Only.
Preferably, the relay on-off automatic control unit uses FPGA.
Preferably, the direct current signal generates unit and uses D.C. regulated power supply.
Preferably, the pulse uses high speed digital oscilloscope along interval calculation unit.
Preferably, the continuous impulse generates unit and uses function generator.
Preferably, the pressure stop unit uses button switch.
It is another object of the present invention to propose it is a kind of using trigger pulse control the relay operation time survey automatically
Method for testing uses the above-mentioned relay operation time automatic testing equipment controlled using trigger pulse, and concrete scheme is as follows:
It is as follows using control process of the relay on-off automatic control unit to relay array unit:
The edge of real-time detection pulse and edge is captured in real time；
State flag bit is set, different operations is carried out according to the difference of flag bit；
The logic control that relay array unit drive level is completed in different instructions is sent according to different status indicators.
Preferably, control process of the relay on-off automatic control unit to relay array unit specifically:
Two variables are set in relay on-off automatic control unit and a counter, two of them variable are marked respectively
Know is trigger flag 1 and trigger flag 2；Trigger flag 1 represents first triggering state, and trigger flag 2 represents second triggering
State；Counter is used to calculate the porch arrival moment and relay array unit has received the time interval at instruction moment；
Relay on-off automatic control unit power on the moment first give built-in variable initialization:
Trigger flag 1 is set as 1 when init state, which indicates that a series of actions of rising edge will be executed；Meter
Number devices count from zero under clock effect, if the rising edge relay on-off automatic control unit in clock detects the
The rising edge of one pulse, relay on-off automatic control unit only retain the information on first pulse edge, and succeeding impulse is along letter
Do not retain inside breath relay on-off automatic control unit, while relay on-off automatic control unit gives relay array unit
Instruction, counter O reset are opened in transmission, and trigger flag 1 is set to 0, and the movement which indicates that rising edge executes terminates；
And then 1 is set by trigger flag 2, state expression will execute down a series of actions for rising edge, work as relay
The decline of external pulse is detected inside device on-off automatic control unit in the rising edge of clock, counter starts counting,
It is sent simultaneously to relay array unit and closes instruction, be sent rear counter O reset, trigger flag 2 is set to 0 simultaneously will triggering
Mark 1 is set to 1, which shows to have completed the pass operation of relay, is ready for next time to relay array unit
Open operation；If relay on-off automatic control unit detects that terminate mode bit is 1 always, shows also to execute down at this time
Once-through operation, and be transferred to and recycle next time, if detecting that terminating mode bit is 0, does not execute next operation at this time.
The present invention has the advantage that
The present invention, using the design philosophy of impulsive synchronization, each unit circuit is synchronized using trigger pulse as core, real
The synchronous working of each unit is showed；By being captured to external received pulse, converting simultaneously automatic control relay array list
The on-off of member, realizes the automatic test to the relay operation time；At general testing instrument unit+dedicated pulse
It manages unit+relay array unit to organically combine, realize to the automatic of the make-and-break time of relay single in relay array
Test.The present invention using automatic test, compared with the existing technology in manual test for, testing efficiency significantly improves；In addition
Operation is synchronized to each unit since present invention introduces lock-out pulses, so that the real-time of entire test device is consistent, is eliminated
In measurement process as each unit it is asynchronous caused by error, improve accuracy of measurement.Further, since the present invention is using single
The all purpose instrument of a miniaturization sets up entire test macro, therefore entire test device is small in size, convenient disassembly, and test device is just
In integrated.
Detailed description of the invention
Fig. 1 is in the prior art to the structural block diagram of the test device of relay operation time；
Fig. 2 is the structural block diagram of the relay operation time automatic testing equipment in the present invention using trigger pulse control；
Fig. 3 is the functional block diagram of the relay operation time automatic test approach in the present invention using trigger pulse control.
Specific embodiment
With reference to the accompanying drawing and specific embodiment invention is further described in detail:
As shown in connection with fig. 2, a kind of relay operation time automatic testing equipment controlled using trigger pulse, including relay
Device array element, relay on-off automatic control unit, direct current signal generate unit, pulse along interval calculation unit and continuously
Impulse generating unit passes through cable A, cable B, cable D and cable E connection between each unit.
Relay on-off automatic control unit preferably uses FPGA, for complete according to the rising edge or failing edge on pulse edge
The automatic control of pairs of relay array unit got through or disconnected.
Specifically, relay on-off automatic control unit can be divided into pulse capture unit, status indicator unit, automatic
Three dummy units of control unit, in which:
The edge of pulse capture unit real-time detection pulse and edge is captured in real time；
State flag bit is arranged in status indicator unit, according to the different operation of the different progress of flag bit；
Automatic control unit sends the logic that relay driving level is completed in different instructions according to different status indicators
Control.
The function that pulse capture unit, status indicator unit, automatic control unit are realized is realized in FPGA by programming.
Direct current signal generates unit and preferably uses D.C. regulated power supply, for the signal input part for relay array unit
DC level signal is provided.
Pulse preferably uses high speed digital oscilloscope along interval calculation unit, for capturing the edge and the edge of pulse of signal
Edge, and the time difference at two edges is calculated using the Trigger Function of oscillograph automatically.
Continuous impulse generates unit and preferably uses function generator.
Function generator generates two-way synchronization and by the train of pulse of some cycles triggering, is sent to pulse all the way and counts along interval
The trigger port for calculating unit, is in addition sent to relay on-off automatic control unit all the way.
In addition, the automatic testing equipment in the present invention further includes forcing stop unit, forces stop unit preferably to use and press
Button switch.Stop unit is forced to connect by cable C with relay on-off automatic control unit.
Stop unit is forced, it is main to control whether whole flow process carry out stopping after repeatedly recycling or completing single test
Only.
The start-up course of automatic testing equipment is as follows in the present invention:
D.C. regulated power supply is set first, so that output+5VDC, and output is connected to the defeated of relay array unit
Inbound port, then high speed digital oscilloscope is set, it is channel 1 that setting source, which is triggered,；The finally pulse week that setting function generator exports
Phase and pulse delay time and pulse pattern, after manually controlling function generator output, whole device is with regard to automatic work.
The present invention is core according to the capturing unit, status indicator unit, automatic control unit of pulse, according to certain control
Process makes device automatic work, by the operating time of oscillograph real-time detection and calculating relay, has very strong general
Property.
When the switch operating time other types of using the device to test, a demand replaces different test objects can be certainly
The dynamic test for completing the operating time.
A kind of relay operation time automatic test approach controlled using trigger pulse is shown below, uses above-mentioned
The relay operation time automatic testing equipment controlled using trigger pulse.
As shown in figure 3, using relay on-off automatic control unit to the control process of relay array unit specifically:
Two variables are set in relay on-off automatic control unit and a counter, two of them variable are marked respectively
Know is trigger flag 1 and trigger flag 2；Trigger flag 1 represents first triggering state, and trigger flag 2 represents second triggering
State；Counter is used to calculate the porch arrival moment and relay array unit has received the time interval at instruction moment.
When each component of test device all powers on, entire test device begins to work, and relay on-off is controlled automatically
Unit processed power on the moment first give built-in variable initialization:
Trigger flag 1 is set as 1 when init state, which indicates that a series of actions of rising edge will be executed；Meter
Number devices count from zero under clock effect, if the rising edge relay on-off automatic control unit in clock detects the
The rising edge of one pulse, relay on-off automatic control unit only retain the information on first pulse edge, and succeeding impulse is along letter
Do not retain inside breath relay on-off automatic control unit, while relay on-off automatic control unit gives relay array unit
Instruction, counter O reset are opened in transmission, and trigger flag 1 is set to 0, and the movement which indicates that rising edge executes terminates；
And then 1 is set by trigger flag 2, state expression will execute down a series of actions for rising edge, work as relay
The decline of external pulse is detected inside device on-off automatic control unit in the rising edge of clock, counter starts counting,
It is sent simultaneously to relay array unit and closes instruction, be sent rear counter O reset, trigger flag 2 is set to 0 simultaneously will triggering
Mark 1 is set to 1, which shows to have completed the pass operation of relay, is ready for next time to relay array unit
Open operation；If relay on-off automatic control unit detects that terminate mode bit is 1 always, shows also to execute down at this time
Once-through operation, and be transferred to and recycle next time, if detecting that terminating mode bit is 0, does not execute next operation at this time.
Certainly, described above is only that presently preferred embodiments of the present invention is answered the present invention is not limited to enumerate above-described embodiment
When explanation, anyone skilled in the art is all equivalent substitutes for being made, bright under the introduction of this specification
Aobvious variant, all falls within the essential scope of this specification, ought to be by protection of the invention.
Claims (1)
1. a kind of relay operation time automatic test approach controlled using trigger pulse, what is used utilizes trigger pulse control
The relay operation time automatic testing equipment of system includes:
Relay array unit needs relay array to be tested for setting up；
Relay on-off automatic control unit, for being completed according to the rising edge or failing edge on pulse edge to relay array list
The automatic control of member got through or disconnected；
Direct current signal generates unit, for providing DC level signal for the signal input part of relay array unit；
Pulse is along interval calculation unit, for capturing the edge and porch of DC level signal, and calculates two sides automatically
The time difference on edge；
Continuous impulse generates unit, the train of pulse for generating two-way synchronization and triggering by some cycles, wherein being sent to all the way
In addition pulse is sent to relay on-off automatic control unit along the trigger port of interval calculation unit all the way；
It is characterized in that, as follows using control process of the relay on-off automatic control unit to relay array unit:
The edge of real-time detection pulse and edge is captured in real time；
State flag bit is set, different operations is carried out according to the difference of flag bit；
The logic control that relay array unit drive level is completed in different instructions is sent according to different status indicators；
Control process of the relay on-off automatic control unit to relay array unit specifically:
Two variables are set in relay on-off automatic control unit and a counter, two of them variable are individually identified as
Trigger flag 1 and trigger flag 2；Trigger flag 1 represents first triggering state, and trigger flag 2 represents second triggering state；
Counter is used to calculate the porch arrival moment and relay array unit has received the time interval at instruction moment；
Relay on-off automatic control unit power on the moment first give built-in variable initialization:
Trigger flag 1 is set as 1 when init state, which indicates that a series of actions of rising edge will be executed；Counter
It is counted from zero under clock effect, if the rising edge relay on-off automatic control unit in clock detects first
The rising edge of pulse, relay on-off automatic control unit only retain the information on first pulse edge, succeeding impulse along information after
Do not retain inside electric appliance on-off automatic control unit, while relay on-off automatic control unit is sent to relay array unit
Instruction, counter O reset are opened, trigger flag 1 is set to 0, and the movement which indicates that rising edge executes terminates；
And then 1 is set by trigger flag 2, state expression will execute down a series of actions for rising edge, when relay is logical
The decline of external pulse is detected inside disconnected automatic control unit in the rising edge of clock, counter starts counting, simultaneously
It is sent to relay array unit and closes instruction, be sent rear counter O reset, trigger flag 2 is set to 0 simultaneously for trigger flag 1
It is set to 1, which shows to have completed the pass operation of relay, is ready for opening behaviour to relay array unit next time
Make；If relay on-off automatic control unit detects that terminate mode bit is 1 always, shows also to execute and grasp at this time next time
Make, and be transferred to and recycle next time, if detecting that terminating mode bit is 0, does not execute next operation at this time.
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| CN201710381769.6A CN107167729B (en) | 2017-05-26 | 2017-05-26 | Utilize the relay operation time automatic testing equipment and method of trigger pulse control |
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| CN201710381769.6A CN107167729B (en) | 2017-05-26 | 2017-05-26 | Utilize the relay operation time automatic testing equipment and method of trigger pulse control |
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| CN113009248A (en) * | 2021-02-08 | 2021-06-22 | 天津云遥宇航科技有限公司 | Test method, test equipment and test system |
| CN114167274B (en) * | 2021-12-06 | 2024-04-12 | 深圳飞骧科技股份有限公司 | Switch switching time testing method, related system and equipment and storage medium |
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