CN102466769A - Test equipment for realizing on-off test with adjustable threshold and method thereof - Google Patents
Test equipment for realizing on-off test with adjustable threshold and method thereof Download PDFInfo
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- CN102466769A CN102466769A CN2010105348408A CN201010534840A CN102466769A CN 102466769 A CN102466769 A CN 102466769A CN 2010105348408 A CN2010105348408 A CN 2010105348408A CN 201010534840 A CN201010534840 A CN 201010534840A CN 102466769 A CN102466769 A CN 102466769A
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Abstract
The invention provides test equipment for realizing an on-off test with an adjustable threshold and a method thereof. The equipment comprises a measuring part, a storage unit, a control part, a display part, and a keyboard unit. The measuring unit is used for generating a measurement value; the storage unit is used for storing a test threshold; the control part is used for carrying out comparison on the measurement value and the test threshold; the keyboard unit is used for emitting a test threshold set instruction; and the display part is used for responding the test threshold set instruction and displaying a threshold set window that is used for setting a value of the test threshold. Besides, the control part also refreshes the test threshold into a test threshold that is reset by the threshold set window. The method comprises the following steps that: a test threshold set instruction is responded; a test threshold is reset; the test threshold is refreshed into the reset test threshold; and according to the reset test threshold, an on-off test is carried out. According to the invention, an effect that a test threshold can be set freely by a user is realized, so that various on-off test demands of the user can be met.
Description
Technical field
The present invention relates to the electric variable field tests, relate in particular in the electric variable test, be used to realize the testing apparatus and the method for on off test.
Background technology
In the thermometrically equipment, especially various types of digital multimeter all have the on off test function, and the on off test function mainly is to be used for judging fast the break-make of measuring circuit object, are the indispensable functions of electronics maintenance.Digital multimeter is nimble type surveying instrument, can measure AC and DC voltage and AC and DC electric current, resistance, from security consideration, midget tester energy measurement electric current not usually.Except these fundamental measurement functions, most of models have diode testing function and on off test function.Partly trendy product has survey frequency, capacitance function.Partly model has additional function, measure like minimum and maximum value locking and relative value, and data interlock and range lock function
In the prior art, the on off test function realizes that as follows the simulating signal of input is through after the AD converter; Become discrete digital signal; Digital multimeter is provided with the measured value that these discrete digital signal is converted to a correspondence according to current measurement, then fixing in this measured value and a digital multimeter test threshold is done comparison, if less than this test threshold; Detect to logical, show measured value and make buzzer call; If greater than this test threshold, still do not exceed the measurement range of digital multimeter, then show measured value, but hummer does not pipe; If greater than this test threshold, and exceeded the measurement range of digital multimeter, then detected to disconnected.
Because test threshold of the prior art often adopts several fixing empirical values; Setting just has been fixed when digital multimeter is dispatched from the factory; This test threshold can not be edited arbitrarily the user; Promptly can not change arbitrarily, though this can satisfy a lot of users' on off test demand, when user's tested object is more special; Such as under the situation of power on circuitry, carrying out on off test, utilize this moment the fixing test threshold of setting just can not correctly reflect the break-make of circuit-under-test.
Summary of the invention
Technical matters to be solved by this invention is, realizes that test threshold is adjustable, and especially this test threshold can be set arbitrarily for the user, to satisfy the different on off test demand of user easily.
Solve the problems of the technologies described above, the invention provides a kind of testing apparatus that realizes the on off test of adjustable threshold value.
The testing apparatus of the on off test of realization adjustable threshold value of the present invention comprises a measurement component, a storage unit; A control assembly, a display unit, a keyboard unit; Said measurement component is used to produce measured value, and said storage unit is used to store a test threshold that is used on off test, and described control assembly is used for said measured value is compared with said test threshold; According to comparative result; Produce the result of on off test, said keyboard unit also is used to send the test threshold setting command, and said display unit also is used to respond said test threshold setting command; Show a threshold setting window that is used to set said test threshold, said control assembly also is used for said test threshold is refreshed the test threshold that resets for through said threshold setting window.
Test threshold of said control assembly response is confirmed instruction, said test threshold is refreshed the test threshold that resets for through said threshold setting window.
Said test threshold is confirmed to instruct and can be sent by keyboard unit.
Said keyboard unit can be a physical button.
Said keyboard unit can be the menu soft-key button.
Solve the problems of the technologies described above, the present invention also provides a kind of method that realizes the on off test of adjustable threshold value.
The method of the on off test of realization adjustable threshold value of the present invention may further comprise the steps:
Respond a test threshold setting command;
Reset test threshold;
Said test threshold is refreshed the test threshold for resetting;
Carry out on off test according to the said test threshold that resets.
The said test threshold that resets is in 1 Ω to 2000 Ω scope, to set.
The test threshold that said foundation resets is carried out on off test and is comprised the steps:
Said measured value and the said test threshold that resets are compared;
If less than the said test threshold that resets, detecting, said measured value is " leading to ";
If said measured value then shows measured value greater than the said test threshold that resets and less than testing range;
If greater than the said test threshold that resets and greater than testing range, detecting, said measured value is " breaking ".
The testing apparatus of the on off test of realization adjustable threshold value of the present invention and method have realized the effect that test threshold can freely be set by the user, thereby can satisfy the various on off test demand of user.
Description of drawings
Fig. 1 is the process flow diagram of prior art on off test
Fig. 2 is the testing apparatus synoptic diagram of a preferred embodiment of the present invention
Fig. 3 is the front panel synoptic diagram of the testing apparatus of a preferred embodiment of the present invention
Fig. 4 is the method flow diagram of the setting test threshold of a preferred embodiment of the present invention
Fig. 5 is the method flow diagram that the test threshold according to setting of a preferred embodiment of the present invention is carried out on off test
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail,
With reference to Fig. 2, be the testing apparatus of a preferred embodiment of the present invention's on off test of realizing adjustable threshold value, comprise a measurement component 21; 23, one display units 24 of 22, one control assemblies of a storage unit; A keyboard unit 25; Said measurement component 21 is used to produce measured value, and said storage unit 22 is used to store a test threshold that is used on off test, and described control assembly 23 is used for said measured value is compared with said test threshold; According to comparative result; Produce the result of on off test, said keyboard unit 25 also is used to send the test threshold setting command, and said display unit 24 also is used to respond said test threshold setting command; Show a threshold setting window 26 that is used to set said test threshold, said control assembly 23 also is used for said test threshold is refreshed the test threshold that resets for through said threshold setting window 26.
As illustrating, described control assembly 23 can be single-chip microcomputer, CPU or FPGA programmable gate array etc., and the control assembly in this preferred embodiment has adopted CPU to accomplish.
With reference to Fig. 3; Be the front panel synoptic diagram of the testing apparatus of a preferred embodiment of the present invention, when pressing physical button 27, described display unit 24 shows a threshold setting window 26 that is used to set said test threshold immediately; 10 Ω test threshold of display system acquiescence in the said threshold setting window 26; This moment, the user was through pressing left button 28 and the position of pressing right input button 29 selection setting test threshold imported, and increased test threshold through pressing input button 31, reduced test threshold through pressing down input button 32; Thereby accomplished setting to test threshold; The value that resets can be an arbitrary value, and present embodiment is set in 1 Ω to 2000 Ω scope, after setting is accomplished; Press physical button 27 once more, this moment, the test threshold of system just refreshed the test threshold that resets for through said threshold setting window 26.
When on-screen display menus was depended in the operation of common corresponding button, this button just can be defined as the menu soft-key button, and the menu of physical button and screen display is uncorrelated.
As illustrating, physical button 27 can be the simple function button, also can be multifunction push key.
As illustrating, when pressing physical button 27, described display unit 24 a period of time of can delaying time shows a threshold setting window 26 that is used to set said test threshold again.
As illustrating, when pressing menu soft-key button 30, described display unit 24 shows immediately or a period of time of delaying time shows a threshold setting window 26 that is used to set said test threshold again.
As illustrating, other test threshold that can the display system acquiescence in the said threshold setting window 26, or do not show test threshold, only wait for that the user is provided with.
As illustrating, setting can be pressed physical button 27 once more, but wait for a time threshold after being accomplished, and after the time threshold, the test threshold of system just refreshes the test threshold that resets for through said threshold setting window 26 automatically.
Referring to Fig. 4, be a kind of method of preferred embodiment of the on off test of realization adjustable threshold value of the present invention, the method for this preferred embodiment may further comprise the steps:
Step S31 responds a test threshold setting command;
Step S32 resets test threshold;
Step S33 refreshes the test threshold for resetting with said test threshold;
Step S34 carries out on off test according to the said test threshold that resets.
As illustrating, said step S32 resets test threshold and can set in any range, and this preferred embodiment is in 1 Ω to 2000 Ω scope, to set.
As illustrating; Before the said step S33 of execution refreshes said test threshold for the test threshold that resets, a timing step can also be arranged, add up the time of said test threshold setting command; Also has a determining step; Whether the time of judging said test threshold setting command exceeds a time threshold, if exceed said time threshold, carries out the step of the test threshold that said storage resets; If do not exceed said time threshold, carry out said response test threshold setting instruction step.
With reference to Fig. 5, said step S34 carries out on off test according to the test threshold that resets and comprises the steps:
Said measured value and the said test threshold that resets are compared;
If less than the said test threshold that resets, detecting, said measured value is " leading to " can make buzzer call simultaneously;
If said measured value then shows measured value greater than the said test threshold that resets and less than testing range;
If greater than the said test threshold that resets and greater than testing range, detecting, said measured value is " breaking ".
The testing apparatus of the on off test of realization adjustable threshold value of the present invention and method have realized the effect that test threshold can freely be set by the user, thereby can satisfy the various on off test demand of user, thereby solved the technical matters of prior art.
Though described embodiment of the present invention in conjunction with accompanying drawing, those of ordinary skills can make various distortion and modification within the scope of the appended claims.
Claims (9)
1. a testing apparatus that realizes the on off test of adjustable threshold value comprises a measurement component, a storage unit, and a control assembly, a display unit, a keyboard unit,
Said measurement component is used to produce measured value,
Said storage unit is used to store a test threshold that is used on off test,
Described control assembly is used for said measured value is compared with said test threshold, according to comparative result, produces the result of on off test,
It is characterized in that:
Said keyboard unit also is used to send the test threshold setting command,
Said display unit also is used to respond said test threshold setting command, shows a threshold setting window that is used to set said test threshold,
Said control assembly also is used for said test threshold is refreshed the test threshold that resets for through said threshold setting window.
2. testing apparatus according to claim 1 is characterized in that: test threshold of said control assembly response is confirmed instruction, said test threshold is refreshed the test threshold that resets for through said threshold setting window.
3. testing apparatus according to claim 2 is characterized in that: said test threshold affirmation instruction is sent by keyboard unit.
4. according to claim 1,2 or 3 described testing apparatuss, it is characterized in that: said keyboard unit is a physical button.
5. according to claim 1,2 or 3 described testing apparatuss, it is characterized in that: said keyboard unit is the menu soft-key button.
6. according to claim 1,2 or 3 described testing apparatuss, it is characterized in that: said testing apparatus is a digital multimeter.
7. a method that realizes the on off test of adjustable threshold value is used for the described testing apparatus of claim 1, it is characterized in that: may further comprise the steps:
Respond a test threshold setting command;
Reset test threshold;
Said test threshold is refreshed the test threshold for resetting;
Carry out on off test according to the said test threshold that resets.
8. method according to claim 7 is characterized in that: the said test threshold that resets is in 1 Ω to 2000 Ω scope, to set.
9. according to claim 7 or 8 described methods, it is characterized in that: the test threshold that said foundation resets is carried out on off test and is comprised the steps:
Said measured value and the said test threshold that resets are compared;
If less than the said test threshold that resets, detecting, said measured value is " leading to ";
If said measured value then shows measured value greater than the said test threshold that resets and less than testing range;
If greater than the said test threshold that resets and greater than testing range, detecting, said measured value is " breaking ".
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105348408A CN102466769A (en) | 2010-11-03 | 2010-11-03 | Test equipment for realizing on-off test with adjustable threshold and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105348408A CN102466769A (en) | 2010-11-03 | 2010-11-03 | Test equipment for realizing on-off test with adjustable threshold and method thereof |
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| CN201548643U (en) * | 2009-11-05 | 2010-08-11 | 联创汽车电子有限公司 | Load open circuit or short circuit detecting system for vehicle controller |
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2010
- 2010-11-03 CN CN2010105348408A patent/CN102466769A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611314A (en) * | 1979-07-09 | 1981-02-04 | Sharp Corp | Sound output type measuring equipment |
| US4862142A (en) * | 1987-10-26 | 1989-08-29 | Knight Eldon L | Circuit with memory for detecting intermittent changes in resistance, current, voltage, continuity, power interruption, light, and temperature |
| CN2924549Y (en) * | 2006-06-15 | 2007-07-18 | 杭州瑞琦信息技术有限公司 | Lighting cable power-off stealing detection device |
| CN101149399A (en) * | 2006-09-18 | 2008-03-26 | 臧佳菁 | Digital multimeter for automatically selecting measuring function |
| CN101498743A (en) * | 2007-08-14 | 2009-08-05 | 福鲁克公司 | Digital Multimeter having improved recording functionality |
| CN101498744A (en) * | 2007-08-14 | 2009-08-05 | 福鲁克公司 | Rotary switch memory for digital multimeter |
| CN101241164A (en) * | 2008-01-25 | 2008-08-13 | 东南大学 | Multifunctional electric cable failure detector |
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| CN201548643U (en) * | 2009-11-05 | 2010-08-11 | 联创汽车电子有限公司 | Load open circuit or short circuit detecting system for vehicle controller |
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Application publication date: 20120523 |
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