CN202196109U - Digital multimeter - Google Patents
Digital multimeter Download PDFInfo
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- CN202196109U CN202196109U CN2011203295054U CN201120329505U CN202196109U CN 202196109 U CN202196109 U CN 202196109U CN 2011203295054 U CN2011203295054 U CN 2011203295054U CN 201120329505 U CN201120329505 U CN 201120329505U CN 202196109 U CN202196109 U CN 202196109U
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- Measurement Of Current Or Voltage (AREA)
Abstract
A digital multimeter comprises a microcontroller, a data measurement unit, an analog to digital (A/D) converting unit and a screen display unit. The microcontroller is further connected with a storage unit and a button operating unit, the storage unit is used for storing measured data, the button operating unit is used for operating the microcontroller, and the screen display unit at least comprises an area used for displaying real-time measurement data and an area used for displaying storage data. Therefore, the digital multimeter can store and display the measured data, and extract storage data to process, analyze and compare, thereby guaranteeing accuracy of data measurement and greatly improving work efficiency of measurers.
Description
Technical field
The utility model relates to a kind of measurement instrument, particularly a kind of digital multimeter that is used for the measuring electrical parameter.
Background technology
Digital multimeter is widely used in the electric measurement field, and it also is an indispensable instrument and equipment commonly used of Electrical Engineering and Its Automation specialty simultaneously.It is a kind of multi-functional, multiple range electronic instrument, can be used for measuring physical quantitys such as DC current, voltage, alternating current, voltage, resistance.
Traditional digital multimeter can only be used for disposable reading; This just requires the user conscientiously to watch measurement result with eyes; Therefore the gauger will watch while measuring when measuring; Also will note each data measured simultaneously, measurement data is forgotten, misregister as long as the gauger diverts one's attention to cause a little like this.When the needs data measured is more or densely distributed, the accuracy of measurement will be had a greatly reduced quality, and efficiency of measurement also will be greatly affected.No matter be in the study experimentation of electric automatization or in staff's execute-in-place process, all bring very big inconvenience to the user.
For these reasons, design and a kind ofly store, show measurement data, and can to extract the digital multimeter that the storage data handle, analyze or contrast when needed be problems of needing solution badly of those skilled in the art.
The utility model content
To the defective that above-mentioned prior art exists, the purpose of the utility model provides a kind ofly stores, shows measurement data, and can extract the digital multimeter that the storage data are handled, analyzed or contrast when needed.
The technical scheme of the utility model is:
A kind of digital multimeter; Comprise microcontroller; DATA REASONING unit, A/D converting unit and screen show the unit, and said microcontroller also is connected with storage unit and key operation unit, and said storage unit is used for storage of measurement data; Said key operation unit is used for microcontroller is operated, and said screen shows the unit and comprises a zone and a zone that shows the storage data that is used to show real-time measuring data at least.
The characteristic of the utility model is that also said microcontroller is 16 single-chip microcomputer SPCE061A.16 single-chip microcomputer SPCE061A are powerful, are the single-chip microcomputers of a 16 SOC type, have multiplying order, can carry out convolution algorithm, possess the DSP function.
The characteristic of the utility model also is also to comprise automatic shutdown unit, and power supply is that microcontroller provides WV through automatic shutdown unit, when the digital multimeter stand-by time surpasses preset value, cuts off the power supply that is connected to microcontroller.Like this, can the person of avoiding the use of forget shutdown, cause the long-term in running order situation that influences its life-span of digital multimeter.
The characteristic of the utility model is that also said key operation unit comprises on & off switch, storage key, pick-up key, clear key, key and mark key are set.Said on & off switch is used for the on/off of digital multimeter.Said storage key is used for the data storage that measures in real time to storage unit.Said pick-up key is used for extracting the data of being stored from storage unit.Said clear key is used for removing the data that storage unit is stored.Said mark key comprises upper and lower mark key, is used for mark position.The said key that is provided with is used to be provided with mark.
The characteristic of the utility model is that also said screen shows the unit and adopts LCD or LED video data.LCD or LED show that all to have power consumption low, show stablely, clear, can not cause the instrument heating, and service time is long, and is durable in use.
The characteristic of the utility model also is to be provided with plural display line among said LCD or the LED, and wherein delegation is used to show real-time measuring data at least, and delegation is used for showing the storage data at least.Like this, video data comes into plain view, and the gauger can observe measurement data very intuitively, and accuracy is high, but also has improved work efficiency.
The beneficial effect of the utility model is:
The microcontroller of the utility model is connected with storage unit and key operation unit; When adopting the digital multimeter electric parameter like this; Can be without real time record, as long as the related key of operand word multimeter just can be with the data storage that measures in digital multimeter.After intact all data to be measured, can data be derived and handle, analyze.So both guaranteed the accuracy of DATA REASONING, the work efficiency that has improved the gauger had greatly been arranged.
The digital multimeter that the utility model provides can store, show measurement data, and can extract the storage data when needed and handle, analyze or contrast, and is fit to promote the use of.
Description of drawings
Fig. 1 is the structure principle chart of the utility model.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
With reference to accompanying drawing 1; A kind of digital multimeter comprises microcontroller, and DATA REASONING unit, A/D converting unit and screen show the unit; Said microcontroller also is connected with storage unit and key operation unit; Said storage unit is used for storage of measurement data, and said key operation unit is used for microcontroller is operated, and said screen shows the unit and comprises a zone and a zone that shows the storage data that is used to show real-time measuring data at least.Wherein said screen shows the unit and adopts the LED video data, and demonstration is stable, clear, can not cause the instrument heating.
Also comprise automatic shutdown unit in addition, power supply is that microcontroller provides WV through automatic shutdown unit, when the digital multimeter stand-by time surpasses preset value, cuts off the power supply that is connected to microcontroller.Like this, digital multimeter can realize automatic shutdown, avoids because user's carelessness causes the long-term in running order situation that influences its life-span of digital multimeter.
Said key operation unit comprises on & off switch, storage key, pick-up key, clear key, key and mark key is set.Said on & off switch is used for the on/off of digital multimeter.Said storage key is used for the data storage that measures in real time to storage unit.Said pick-up key is used for extracting the data of being stored from storage unit.Said clear key is used for removing the data that storage unit is stored.Said mark key comprises upper and lower mark key, is used for mark position.The said key that is provided with is used to be provided with mark.Be provided with plural display line in the said LED display, wherein delegation is used to show real-time measuring data at least, and delegation is used for showing the storage data at least.Like this, video data comes into plain view, and the gauger can observe measurement data very intuitively, and accuracy is high, but also has improved work efficiency.
The above is merely the preferred embodiment of the utility model; Be not therefore and the claim of restriction the utility model; Every equivalent structure transformation that utilizes the utility model instructions and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (6)
1. digital multimeter; Comprise microcontroller; DATA REASONING unit, A/D converting unit and screen show the unit; It is characterized in that: said microcontroller also is connected with storage unit and key operation unit, and said screen shows zone and zone that shows the storage data that the unit comprises that at least one is used to show real-time measuring data.
2. digital multimeter according to claim 1 is characterized in that: said microcontroller is 16 single-chip microcomputer SPCE061A.
3. digital multimeter according to claim 1 is characterized in that: also comprise automatic shutdown unit.
4. digital multimeter according to claim 1 is characterized in that: said key operation unit comprises on & off switch, storage key, pick-up key, clear key, key and mark key is set.
5. according to the described digital multimeter of the arbitrary claim of claim 1 to 4, it is characterized in that: said screen shows the unit and adopts LCD or LED video data.
6. digital multimeter according to claim 5 is characterized in that: be provided with plural display line among said LCD or the LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203295054U CN202196109U (en) | 2011-09-05 | 2011-09-05 | Digital multimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203295054U CN202196109U (en) | 2011-09-05 | 2011-09-05 | Digital multimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202196109U true CN202196109U (en) | 2012-04-18 |
Family
ID=45951012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203295054U Expired - Fee Related CN202196109U (en) | 2011-09-05 | 2011-09-05 | Digital multimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202196109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693747A (en) * | 2020-07-23 | 2020-09-22 | 上海四达电子仪表有限公司 | Universal meter |
-
2011
- 2011-09-05 CN CN2011203295054U patent/CN202196109U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693747A (en) * | 2020-07-23 | 2020-09-22 | 上海四达电子仪表有限公司 | Universal meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20120905 |