CN205139217U - Take residual current circuit breaker testing capabilities's novel complex function universal meter - Google Patents
Take residual current circuit breaker testing capabilities's novel complex function universal meter Download PDFInfo
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- CN205139217U CN205139217U CN201520796961.8U CN201520796961U CN205139217U CN 205139217 U CN205139217 U CN 205139217U CN 201520796961 U CN201520796961 U CN 201520796961U CN 205139217 U CN205139217 U CN 205139217U
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Abstract
The utility model discloses a take residual current circuit breaker testing capabilities's novel complex function universal meter, including functional circuit module, functional circuit module includes universal meter test part, residual current circuit breaker test part and wiring test section, and universal meter test part is including input protection circuit module, digital multimeter dedicated chip module and reference voltage module, the module is followed including the digital analog conversion functional module, filtering function module, electric current production module, timing functional module and the signal that connect gradually between power and central processing unit to residual current circuit breaker test part, the wiring test section is equipped with 3 LED pilot lamps, functional circuit module still includes the phase -switching module, and functional module and functional module in a poor light are relatively differentiated to data retention function module. The utility model discloses become an organic whole with universal meter and residual current circuit breaker tester, the user need not to use two test instrument when test residual current circuit breaker and other functional test, can realize that the measuring is accurate, convenient, swift.
Description
Technical field
The utility model relates to the technical field of electronic surveying, is specifically related to a kind of NEW TYPE OF COMPOSITE function multimeter with leakage switch test function.
Background technology
Multimeter in the past and leakage switch (RCD) tester are all independently, and our electric power, quality inspection and acceptance of work department etc. are when reality detects and use, except test leakage switch (RCD), a lot of item to be tested toward contact (comprise AC/DC voltage, frequency, resistance, conducting continuity, AC/DC electric current and electric capacity etc.), need the various different electronic measuring instrument choosing difference in functionality like this, different functional measurements cannot be integrated in a kind of instrument, make its measuring process more loaded down with trivial details, measurement labour intensity is large, increase and measure cost, a lot of inconvenience is brought to measurement, and the measurement instrument of multiple simple function not only involves great expense but also carries inconvenience.
Utility model content
In order to solve the problem, disclosed in the utility model, a kind of NEW TYPE OF COMPOSITE function multimeter with leakage switch test function combines multimeter and leakage switch (RCD) tester in the market simultaneously, effective solution measurement instrument function singleness problem, the demand of closing to reality test more, meet the deficiency of multimeter in electric measurement, there is degree of accuracy high, easy to use, feature efficiently.
The technical scheme that the utility model is adopted for achieving the above object is:
A kind of NEW TYPE OF COMPOSITE function multimeter with leakage switch test function, it functional circuit module comprising housing, probe, function control button, knob, LCD display and be placed in enclosure interior, it is characterized in that, described functional circuit module comprises multimeter part of detecting, leakage switch part of detecting and wiring detecting portion, and wherein said multimeter part of detecting comprises input protection circuit module, digital multimeter special chip module and reference voltage module; Described leakage switch part of detecting comprises analog conversion function module, filter function module, current generating module, timing function module and the signal be connected in turn between power supply and central processing unit and follows module; Described wiring detecting portion is provided with 3 LED light, is respectively the bright and red LED light of the green LED light of P-E, the green LED light of P-N; Described functional circuit module also comprises phase switching module, and data keep functional module, compare discrimination function module and backlight function module.
Further, described filter function module comprises hardware simulation filter function module.
Described leakage switch part of detecting is provided with × 1/2I △ n, × 1I △ n, × 5I △ n and AutoRamp tetra-function shelves.
The desired action current of described leakage switch part of detecting is 10/20/30/100/300mA; Fault actions time range × 1/2I △ n shelves are 0 ~ 2000mS, × 1I △ n shelves are 0 ~ 2000mS, × 5I △ n shelves are 0 ~ 40mS, are 0 ~ 300mS at AutoRamp shelves; Action (tripping operation) current precision × 1/2I △ n shelves are-8% ~ 0%, × 1I △ n shelves and × 5I △ n shelves are 0% ~+8%, are-8%% ~+8% at AutoRamp shelves; Action (tripping operation) time precision is ± 2%rdg ± 2dgt.
It is that Phase-switching function controls button that described function controls button, and data maintenance function control button, compares discrimination function control button and backlight function controls button.
Further, described functional circuit module also comprises usb communication module.
The utility model has the advantage of: for the problem of measurement instrument function singleness in the market, multimeter and leakage switch (RCD) tester are became one, make user when testing leakage switch (RCD) and other functions (voltage, electric current, resistance, conducting continuity, frequency, temperature etc.) test, without the need to using two testing tools, and use the utility model just can reach measurement object, the demand of closing to reality test more; Binding function controls, by key control additional function, can realize the accurate, convenient, fast of measurement again.
Below in conjunction with accompanying drawing and embodiment, the utility model is further illustrated.
Accompanying drawing explanation
Fig. 1 is the modular structure block diagram of the present embodiment.
Embodiment
Embodiment, see Fig. 1, the NEW TYPE OF COMPOSITE function multimeter of the band leakage switch test function that the present embodiment provides, it functional circuit module comprising housing, probe, function control button, knob, LCD display and be placed in enclosure interior, described functional circuit module comprises multimeter part of detecting, leakage switch (RCD) part of detecting, wiring detecting portion and usb communication module.The present embodiment is for the problem of measurement instrument function singleness in the market, multimeter and leakage switch (RCD) tester are became one, make user when testing leakage switch (RCD) and other functions (voltage, electric current, resistance, conducting continuity, frequency, temperature etc.) test, without the need to using two testing tools, and use the utility model just can reach measurement object, the demand of closing to reality test more; Binding function controls, by key control additional function, can realize the accurate, convenient, fast of measurement again.
Multimeter part of detecting comprises input protection circuit module, digital multimeter special chip (DMMASIC) module and reference voltage module; Described leakage switch (RCD) part of detecting comprises digital-to-analog conversion (DAC) functional module, filter function module, current generating module, timing function module and the signal be connected in turn between power supply and central processing unit and follows module; Described filter function module comprises hardware simulation filter function module, can improve measuring current precision by hardware simulation filtering.
Multimeter part of detecting test function comprises: alternating voltage, DC voltage, resistance, diode, conducting continuity, electric capacity, temperature (thermocouple temperature measurement), frequency, the test of alternating current and DC current; Multimeter part of detecting major function measurement range: alternating voltage is 0V ~ 1000V, frequency response is 45Hz ~ 1000Hz, and measuring accuracy is ± (2%+3); DC voltage is 0 ~ 1000V, and measuring accuracy is ± (2%+3); Alternating current is 0 ~ 1A, and frequency response is 45Hz ~ 1000Hz, and measuring accuracy is ± (2%+5); DC current is 0 ~ 1A, and measuring accuracy is ± (2%+3); Resistance is 0 ~ 40M Ω, and measuring accuracy is ± (1%+3); Electric capacity is 0 ~ 1000 μ F, and measuring accuracy is ± (3%+5); Frequency is 0.01Hz ~ 1MHz, and measuring accuracy is ± (0.1%+3); Temperature is-40 DEG C ~ 1000 DEG C, and measuring accuracy is ± (3%+5).
Described wiring detecting portion is provided with 3 LED light, be respectively the bright and red LED light of the green LED light of P-E, the green LED light of P-N, indicated by 3 LED light, judge whether to connect correctly, when green (GREEN) LED light of P-E and P-N green (GREEN) LED light bright and red (RED) LED light do not work, then wiring is correct, otherwise wiring is incorrect.
Before the test of leakage switch (RCD) part of detecting, check that whether wiring is correct by wiring detecting portion; Wiring detecting portion carries out leakage switch test after detecting wiring correctly, and leakage switch (RCD) part of detecting test function comprises: trigger current test and the test in triggered time; The NEW TYPE OF COMPOSITE function multimeter of this band leakage switch test function is connected with main control microcomputer by usb communication module, and main control microcomputer runs upper computer software; By the data of display measurement and test mode on main control microcomputer.Described leakage switch part of detecting is provided with × 1/2I △ n, × 1I △ n, × 5I △ n and AutoRamp tetra-function shelves.× 1/2I △ n is not for trigger test, and the sensitivity of checking R CD, × 1I △ n is that conventional triggering is tested, and × 5I △ n is rapid triggering test, and AutoRamp function shelves can test trigger current value and triggered time simultaneously.Specified action (tripping operation) electric current of described leakage switch part of detecting is 10/20/30/100/300mA; Fault actions (tripping operation) time range × 1/2I △ n shelves are 0 ~ 2000mS, × 1I △ n shelves are 0 ~ 2000mS, × 5I △ n shelves are 0 ~ 40mS, are 0 ~ 300mS at AutoRamp shelves; Action (tripping operation) current precision × 1/2I △ n shelves are-8% ~ 0%, × 1I △ n shelves and × 5I △ n shelves are 0% ~+8%, are-8%% ~+8% at AutoRamp shelves; Action (tripping operation) time precision is ± 2%rdg ± 2dgt.Phase angle is selected: test can be selected from positive (0 °) or test from negative (180 °) half cycle.
Described functional circuit module also comprises phase switching module, and data keep functional module, compare discrimination function module and backlight function module; It is that Phase-switching (PHASE) function corresponding with functional circuit module controls button that described function controls button, data keep (HOLD) function to control button, compare differentiation (COMP) function and control button and backlight (LIGHT) function control button.
The utility model is not limited to above-mentioned embodiment, adopt or approximate construction identical with the utility model above-described embodiment, and other obtaining is for the NEW TYPE OF COMPOSITE function multimeter with leakage switch test function, all within protection domain of the present utility model.
Claims (6)
1. the NEW TYPE OF COMPOSITE function multimeter with leakage switch test function, it functional circuit module comprising housing, probe, function control button, knob, LCD display and be placed in enclosure interior, it is characterized in that: described functional circuit module comprises multimeter part of detecting, leakage switch part of detecting and wiring detecting portion, wherein said multimeter part of detecting comprises input protection circuit module, digital multimeter special chip module and reference voltage module; Described leakage switch part of detecting comprises analog conversion function module, filter function module, current generating module, timing function module and the signal be connected in turn between power supply and central processing unit and follows module; Described wiring detecting portion is provided with 3 LED light, is respectively the bright and red LED light of the green LED light of P-E, the green LED light of P-N; Described functional circuit module also comprises phase switching module, data keep functional module, compare discrimination function module and backlight function module.
2. the NEW TYPE OF COMPOSITE function multimeter of band leakage switch test function according to claim 1, is characterized in that: described filter function module comprises hardware simulation filter function module.
3. the NEW TYPE OF COMPOSITE function multimeter of band leakage switch test function according to claim 1, is characterized in that: described leakage switch part of detecting is provided with × 1/2I △ n, × 1I △ n, × 5I △ n and AutoRamp tetra-function shelves.
4. the NEW TYPE OF COMPOSITE function multimeter of band leakage switch test function according to claim 3, is characterized in that: the desired action current of described leakage switch part of detecting is 10/20/30/100/300mA; Fault actions time range × 1/2I △ n shelves are 0 ~ 2000mS, × 1I △ n shelves are 0 ~ 2000mS, × 5I △ n shelves are 0 ~ 40mS, are 0 ~ 300mS at AutoRamp shelves; Action current precision × 1/2I △ n shelves are-8% ~ 0%, × 1I △ n shelves and × 5I △ n shelves are 0% ~+8%, are-8%% ~+8% at AutoRamp shelves; Actuation time, precision was ± 2%rdg ± 2dgt.
5. the NEW TYPE OF COMPOSITE function multimeter of band leakage switch test function according to claim 1, it is characterized in that: it is that Phase-switching function controls button that described function controls button, data keep function to control button, compare discrimination function and control button and backlight function control button.
6. the NEW TYPE OF COMPOSITE function multimeter of band leakage switch test function according to claim 1, is characterized in that: described functional circuit module also comprises usb communication module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796961.8U CN205139217U (en) | 2015-10-14 | 2015-10-14 | Take residual current circuit breaker testing capabilities's novel complex function universal meter |
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| CN201520796961.8U CN205139217U (en) | 2015-10-14 | 2015-10-14 | Take residual current circuit breaker testing capabilities's novel complex function universal meter |
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| CN205139217U true CN205139217U (en) | 2016-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106814273A (en) * | 2017-03-31 | 2017-06-09 | 漳州市东方智能仪表有限公司 | A kind of automobile fault diagnostic apparatus |
| CN110045171A (en) * | 2019-04-02 | 2019-07-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Radio-frequency voltage electric current combined probe |
-
2015
- 2015-10-14 CN CN201520796961.8U patent/CN205139217U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106814273A (en) * | 2017-03-31 | 2017-06-09 | 漳州市东方智能仪表有限公司 | A kind of automobile fault diagnostic apparatus |
| CN106814273B (en) * | 2017-03-31 | 2019-07-02 | 漳州市东方智能仪表有限公司 | A kind of automobile fault diagnostic apparatus |
| CN110045171A (en) * | 2019-04-02 | 2019-07-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Radio-frequency voltage electric current combined probe |
| CN110045171B (en) * | 2019-04-02 | 2021-04-20 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Radio frequency voltage current composite probe |
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Address after: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee after: Uno Technology (China) Limited by Share Ltd Address before: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee before: Uni-Trend Technology (China) Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |