CN204439816U - Touch multimeter tester - Google Patents
Touch multimeter tester Download PDFInfo
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- CN204439816U CN204439816U CN201520018328.6U CN201520018328U CN204439816U CN 204439816 U CN204439816 U CN 204439816U CN 201520018328 U CN201520018328 U CN 201520018328U CN 204439816 U CN204439816 U CN 204439816U
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Abstract
The utility model discloses a kind of touch multimeter tester, comprise check system, described check system comprises multi-functional calibration source, embedded scm data processing module, touch screen control module and power module, described embedded scm data processing module comprises S3C2440A embedded scm, and the storer to be connected with this embedded scm, display module, touch screen control module, voltage data acquisition module, voltage range switches control module, current data acquisition module, current range switches control module, resistance data acquisition module and resistance range switch control module.The utility model has that physical switch is few, information displaying comprehensively, High voltage output alarm and the advantage that electric current is little, resolution is high, safe and reliable, power is little.
Description
Technical field
The utility model belongs to electronic instrumentation, is specifically related to a kind of touch multimeter tester.
Background technology
Traditional Multimeter Calibration device mainly outputs signal multimeter by calibration source, and by pointer instrument or numeral method, this calibrating installation exists following shortcoming:
1., when high voltage detects, generation current is excessive;
2. physical switch is too much, complicated operation;
3. show information single;
4. the gear switch of voltage/current mistake lacks judgement and defencive function.
Summary of the invention
The purpose of this utility model solves the problems of the technologies described above, provide that a kind of physical switch is few, information displaying comprehensively, High voltage output alarm and the touch multimeter tester that electric current is little, resolution is high, safe and reliable, power is little.
For realizing above-mentioned object, the technical solution of the utility model is:
A kind of touch multimeter tester, comprise check system, described check system comprises multi-functional calibration source, embedded scm data processing module, touch screen control module and power module, described embedded scm data processing module comprises S3C2440A embedded scm, and the storer to be connected with this embedded scm, display module, touch screen control module, voltage data acquisition module, voltage range switches control module, current data acquisition module, current range switches control module, resistance data acquisition module and resistance range switch control module, described multi-functional calibration source comprises the AC/DC voltage output module exporting calibration voltage to table to be verified, the DC current output module of calibration current is exported to table to be verified, the resistance output module of calibrated resistance is exported to table to be verified, described AC/DC voltage output module respectively with voltage data acquisition module, voltage range switches control module and connects, described DC current output module respectively with current data acquisition module, current range switches control module and connects, described resistance output module respectively with resistance data acquisition module, resistance range switches control module and connects, described power module is connected with S3C2440A embedded scm, AC/DC voltage output module, DC current output module and resistance output module respectively.
The above touch screen control module comprises capacitive touch screen and touching signals is converted to digital signal data processing module.
The above display module comprises display screen and display screen driver module.
The above display screen is TFT colour liquid crystal display device.
The above voltage data acquisition module, current data acquisition module and resistance data acquisition module all adopt 12 AD conversion module.
The above AC/DC voltage output module adopts the adjustable DC-DC boost module of PWM, and described DC current output module adopts constant pressure and flow module, and described resistance output module adopts precision resister, the resistance combination that error is less than 1%.
The above storer is K4S561632N storer.
The utility model multi-functional calibration source voltage exports and adopts PWM(pulse-width adjustment) adjustable DC-DC boost module exports the calibration voltage that wide region regulates, output HIGH voltage low current to being calibrated multimeter.When detecting multimeter voltage/current gear, judge gear setting whether correct and wrong gear defencive function.
The utility model adopts the embedded S3C2440AL single-chip microcomputer of Samsung as micro controller core, man-machine interaction input adopts with the dummy keyboard of capacitive touch screen display, comprises icon, acknowledgement key, cancel key, ten key, increase key, reduces key, reset key.Man-machine interaction exports TFT colour liquid crystal display device, show magnitude of voltage, current value, word and graphical interfaces respectively, comprise display AC/DC voltage, AC/DC electric current and resistance value, specifications and models, numbering, date, be calibrated AC/DC voltage gear that multimeter should look after and guide, be calibrated AC/DC electric current gear that multimeter should look after and guide, be calibrated resistance gear that multimeter should look after and guide, high voltage output screen display Warning Sign and alarm sound prompting.The output switching of the voltage of multi-functional calibration source, electric current and resistance is controlled by the icon of dummy keyboard; By increasing key, reducing the voltage in key and the numerical key control accurate source of Multifunctional school, electric current and resistance value output.Resetted by reset key and export zero value.
Compared with prior art, the beneficial effects of the utility model are: with S3C2440A embedded scm module for control core designs, based on μ COSII Design of Embedded Operating System program, adopt the operation of all touch screen control mode, without physical button and switch, TFT large screen color liquid crystal displaying information on screen enriches, High voltage output alarm and electric current is little, resolution is high, and operation interface is friendly simple.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of the touch multimeter tester of the utility model;
Fig. 2 is the DC voltage data acquisition module circuit diagram of the touch multimeter tester of the utility model;
Fig. 3 is that the DC voltage range of the touch multimeter tester of the utility model switches control module circuit diagram;
Fig. 4 is the alternating voltage data acquisition module circuit diagram of the touch multimeter tester of the utility model;
Fig. 5 is that the alternating voltage range of the touch multimeter tester of the utility model switches control module circuit diagram;
Fig. 6 is the current data acquisition module circuit diagram of the touch multimeter tester of the utility model;
Fig. 7 is that the current range of the touch multimeter tester of the utility model switches control module circuit diagram;
Fig. 8 is the resistance data acquisition module circuit diagram of the touch multimeter tester of the utility model;
Fig. 9 is that the resistance range of the touch multimeter tester of the utility model switches control module circuit diagram;
Figure 10 is the power module circuitry figure of the touch multimeter tester of the utility model;
Figure 11 is the embedded scm data processing module circuit diagram of the touch multimeter tester of the utility model;
Figure 12 is the touch screen control module circuit diagram of the touch multimeter tester of the utility model;
Figure 13 is the display screen driver module circuit diagram of the touch multimeter tester of the utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to the scope that embodiment represents.
Embodiment 1:
As shown in Figure 1, a kind of touch multimeter tester, comprise check system, check system comprises multi-functional calibration source, embedded scm data processing module, touch screen control module and power module, embedded scm data processing module comprises S3C2440A embedded scm, and the storer to be connected with this embedded scm, display module, touch screen control module, voltage data acquisition module, voltage range switches control module, current data acquisition module, current range switches control module, resistance data acquisition module and resistance range switch control module, multi-functional calibration source comprises to the AC/DC voltage output module of table output calibration voltage to be verified, to the DC current output module of table output calibration current to be verified, to the resistance output module showing to export calibrated resistance to be verified, AC/DC voltage output module switches control module with voltage data acquisition module, voltage range respectively and is connected, DC current output module switches control module with current data acquisition module, current range respectively and is connected, and resistance output module switches control module with resistance data acquisition module, resistance range respectively and is connected, power module is connected with S3C2440A embedded scm, AC/DC voltage output module, DC current output module and resistance output module respectively.Touch screen control module comprises capacitive touch screen and touching signals is converted to digital signal data processing module.Display module comprises display screen and display screen driver module.Display screen is TFT colour liquid crystal display device.Voltage data acquisition module, current data acquisition module and resistance data acquisition module all adopt 12 AD conversion module.AC/DC voltage output module adopts the adjustable DC-DC boost module of PWM, and DC current output module adopts constant pressure and flow module, and resistance output module adopts precision resister, the resistance combination that error is less than 1%.
Operation steps:
One, DC voltage verification
1, DC voltage calibration selected by screen, enters DC voltage Calibration interface;
2, on screen, dummy keyboard input arranges the magnitude of voltage (when magnitude of voltage is more than 100V, prompting that screen has that Keep Clear-High Voltage) needing to export, by acknowledgement key after completing;
3, multimeter to be verified (MF-47 type multimeter) table rod is pressed the output terminal of this tester of positive-negative polarity correspondence access, debug according to the corresponding multimeter reading to be verified of output voltage values.
Two, alternating voltage verification
1, alternating voltage calibration selected by screen, enters alternating voltage Calibration interface;
2, on screen, dummy keyboard input arranges the magnitude of voltage (when magnitude of voltage is more than 100V, prompting that screen has that Keep Clear-High Voltage) needing to export, by acknowledgement key after completing;
3, multimeter to be verified (MF-47 type multimeter) table rod is pressed the output terminal of this tester of positive-negative polarity correspondence access, debug according to the corresponding multimeter reading to be verified of output voltage values.
Three, DC current verification
1, correcting current selected by screen, enters correcting current interface;
2, on screen, dummy keyboard input arranges the electric current needing to export, by acknowledgement key after completing;
3, multimeter to be verified (MF-47 type multimeter) table rod is pressed the output terminal of this tester of positive-negative polarity correspondence access, debug according to the corresponding multimeter reading to be verified of output current value.
Four, resistance verification
1, resistance calibration selected by screen, enters resistance calibration interface;
2, on screen, dummy keyboard input arranges the resistance needing to export, by acknowledgement key after completing;
3, multimeter to be verified (MF-47 type multimeter) table rod is pressed the output terminal of this tester of positive-negative polarity correspondence access, debug according to the corresponding multimeter reading to be verified of output current value.
Five, arrange
1, screen is selected to arrange, and enters and arranges interface;
2, on screen, dummy keyboard input arranges date and time, by acknowledgement key after completing.
Above-described embodiment, be only the specific case further described the purpose of this utility model, technical scheme and beneficial effect, the utility model is not defined in this.All make within the utility model scope of disclosure any amendment, equivalent replacement, improvement etc., be all included within protection domain of the present utility model.
Claims (7)
1. a touch multimeter tester, it is characterized in that: comprise check system, described check system comprises multi-functional calibration source, embedded scm data processing module, touch screen control module and power module, described embedded scm data processing module comprises S3C2440A embedded scm, and the storer to be connected with this embedded scm, display module, touch screen control module, voltage data acquisition module, voltage range switches control module, current data acquisition module, current range switches control module, resistance data acquisition module and resistance range switch control module, described multi-functional calibration source comprises the AC/DC voltage output module exporting calibration voltage to table to be verified, the DC current output module of calibration current is exported to table to be verified, the resistance output module of calibrated resistance is exported to table to be verified, described AC/DC voltage output module respectively with voltage data acquisition module, voltage range switches control module and connects, described DC current output module respectively with current data acquisition module, current range switches control module and connects, described resistance output module respectively with resistance data acquisition module, resistance range switches control module and connects, described power module is connected with S3C2440A embedded scm, AC/DC voltage output module, DC current output module and resistance output module respectively.
2. touch multimeter tester according to claim 1, is characterized in that: described touch screen control module comprises capacitive touch screen and touching signals is converted to digital signal data processing module.
3. touch multimeter tester according to claim 1, is characterized in that: described display module comprises display screen and display screen driver module.
4. touch multimeter tester according to claim 3, is characterized in that: described display screen is TFT colour liquid crystal display device.
5. touch multimeter tester according to claim 1, is characterized in that: described voltage data acquisition module, current data acquisition module and resistance data acquisition module all adopt 12 AD conversion module.
6. touch multimeter tester according to claim 1, it is characterized in that: described AC/DC voltage output module adopts the adjustable DC-DC boost module of PWM, described DC current output module adopts constant pressure and flow module, described resistance output module adopts precision resister, the resistance combination that error is less than 1%.
7. touch multimeter tester according to claim 1, is characterized in that: described storer is K4S561632N storer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520018328.6U CN204439816U (en) | 2015-01-12 | 2015-01-12 | Touch multimeter tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520018328.6U CN204439816U (en) | 2015-01-12 | 2015-01-12 | Touch multimeter tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204439816U true CN204439816U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520018328.6U Expired - Fee Related CN204439816U (en) | 2015-01-12 | 2015-01-12 | Touch multimeter tester |
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| Country | Link |
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| CN (1) | CN204439816U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597422A (en) * | 2015-01-12 | 2015-05-06 | 柳州铁道职业技术学院 | Touching-type universal meter calibration instrument |
| CN105954590A (en) * | 2015-12-31 | 2016-09-21 | 西安航天精密机电研究所 | Insulation pathway tester |
-
2015
- 2015-01-12 CN CN201520018328.6U patent/CN204439816U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597422A (en) * | 2015-01-12 | 2015-05-06 | 柳州铁道职业技术学院 | Touching-type universal meter calibration instrument |
| CN105954590A (en) * | 2015-12-31 | 2016-09-21 | 西安航天精密机电研究所 | Insulation pathway tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20180112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |