CN203204028U - Digital multimeter - Google Patents
Digital multimeter Download PDFInfo
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- CN203204028U CN203204028U CN 201320186372 CN201320186372U CN203204028U CN 203204028 U CN203204028 U CN 203204028U CN 201320186372 CN201320186372 CN 201320186372 CN 201320186372 U CN201320186372 U CN 201320186372U CN 203204028 U CN203204028 U CN 203204028U
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- multimeter
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Abstract
The utility model discloses a digital multimeter, including a multimeter shell, a function and range shift knob and a multimeter circuit. The multimeter shell is inserted with a first test meter pen and a second test meter pen; the multimeter circuit comprises a measuring circuit module, a microprocessor module, a power module, a data storage module, a wireless communication module, an A / D conversion circuit module, a key circuit module and a liquid crystal display module circuit. The measuring circuit module includes a function selection circuit module, a range switching circuit module, a current / voltage conversion circuit module, and AC / DC conversion circuit module and a resistance / voltage conversion circuit module. The first test meter pen comprises a plurality of test penholders hinged together and test pen heads fixedly connected with the penholders at the test end; and the test end of the second test meter pen is provided with a test hole. The utility model has the advantages of reasonable design, convenient operation, realization of measurement on areas hard for an ordinary multimeter to measure, accurate measurement, timely and effective display, and convenience for popularization and usage.
Description
Technical field
The utility model relates to electronic measuring technology field, especially relates to a kind of digital multimeter.
Background technology
Multimeter is the most basic instrument in electronic surveying field, it also is widely instrument of a kind of use, its major function is that voltage, resistance and electric current are measured, and some multimeter can also be measured the electrical quantitys such as alternating current, electric capacity, inductance value, temperature, transistorized common emitter dc amplification factor.Pen meter of universal meter is the important component part of multimeter, and it is determining the accuracy of measurement.In daily experimentation, need sometimes to measure that the signal of some device comes whole circuit is analyzed, checked in the doubling plate, but the multimeter of commonly using in the prior art, because test pencil can not be crooked, some zone can't measure in the doubling plate, both dallied over one's work like this, and returned the experimenter and brought great inconvenience.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of digital multimeter is provided, and it is simple in structure, and is reasonable in design, it is convenient to realize, use simple operation, realized the measurement in the zone that common multimeter is difficult to measure, measure accurately, show timely and effective, practical, result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of digital multimeter, comprise the multimeter housing, be arranged on function and range conversion knob and the multimeter circuit that is arranged on the multimeter enclosure interior on the multimeter housing, be plugged with the first test test pencil and the second test test pencil on the described multimeter housing, it is characterized in that: described multimeter circuit comprises the metering circuit module, microprocessor module and be the power module of each electricity consumption module for power supply in the multimeter circuit, and the data-carrier store module and the wireless communication module that join with described microprocessor module, the input end of described microprocessor module is connected to A/D change-over circuit module and is used for the key circuit module of input control parameter, and the output terminal of described microprocessor module is connected to the liquid crystal display circuit module for the display measurement result; Described metering circuit module comprises function selector circuit module and the range change-over circuit module of joining with function selector circuit module output terminal, the output terminal of described function selector circuit module is connected to the current-to-voltage converting circuit module, AC/DC change-over circuit module and resistive voltage change-over circuit module, described current-to-voltage converting circuit module, AC/DC change-over circuit module and resistive voltage change-over circuit module are all joined with the input end of described range change-over circuit module, the input end of the output terminal of described range change-over circuit module and described A/D change-over circuit module joins, described function and range conversion knob all join with function selector circuit module and range change-over circuit module, described the first test test pencil and the second test test pencil all join with the input end of function selector circuit module, and described key circuit module and liquid crystal display circuit module all are exposed on the outside surface of described multimeter housing outward; Described the first test test pencil comprises that many hinged test penholders are written with the test that is fixedly connected with the test penholder that is positioned at test lead, and the test lead of described the second test test pencil is provided with instrument connection.
Above-mentioned a kind of digital multimeter is characterized in that: described microprocessor module is single-chip microcomputer.
Above-mentioned a kind of digital multimeter is characterized in that: described data-carrier store module is the Flash data-carrier store.
Above-mentioned a kind of digital multimeter is characterized in that: described wireless communication module is infrared communication module, bluetooth communication, GPRS module, CDMA module or 3G module.
Above-mentioned a kind of digital multimeter is characterized in that: the quantity of described test penholder is three and is respectively the first test penholder, the second test penholder and the 3rd test penholder, and described test nib and the described the 3rd is tested penholder and is fixedly connected with.
Above-mentioned a kind of digital multimeter is characterized in that: described the second test penholder and the first test penholder are hinged by the first swivel pin, and described the 3rd test penholder and the second test penholder are hinged by the second swivel pin.
Above-mentioned a kind of digital multimeter, it is characterized in that: described the first test penholder, the second test penholder and the 3rd test penholder are cylindrical, and the external diameter of the external diameter of described the first test penholder, the second test penholder and the external diameter of the 3rd test penholder are arranged successively from big to small.
Above-mentioned a kind of digital multimeter is characterized in that: be provided with the LED lamp on described the 3rd test penholder, the output terminal of described LED lamp and described microprocessor module joins.
The utility model compared with prior art has the following advantages:
1, the utility model is simple in structure, and is reasonable in design, and it is convenient to realize, uses simple operation.
2, the utility model first test test pencil can bend, and can extend in the zone that the common test test pencil such as double-layer circuit board is difficult to measure, and the circuit board parameter is measured, and has realized the measurement in the zone that common multimeter is difficult to measure; And the 3rd test also is provided with the LED lamp on the penholder, so the LED lamp can also throw light on to test zone, is more convenient for measuring.
3, the test lead of the utility model second test test test pencil is provided with instrument connection, so the two ends metal connection of resistance can penetrate in the instrument connection easily, has made things convenient for and has adopted this digital multimeter to carry out the measurement of resistance value.
4, the utility model is provided with wireless communication module, and microprocessor module can also be wirelessly sent to result the equipment such as user mobile phone, computing machine by wireless communication module, has made things convenient for further analyzing and processing and the storage of measurement result.
5, the utility model microprocessor module is single-chip microcomputer, and data processing speed is fast, measures accurately, shows timely and effective.
6, of the present utility model practical, result of use is good, is convenient to promote the use of.
In sum, the utility model is simple in structure, and is reasonable in design, and it is convenient to realize, uses simple operation, has realized the measurement in the zone that common multimeter is difficult to measure, and measures accurately, shows timely and effectively, practical, and result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic block circuit diagram of the utility model multimeter circuit.
Fig. 3 is the use view of the utility model the first test test pencil.
Description of reference numerals:
1-multimeter housing; 2-function and range conversion knob; The 3-the first test test pencil;
3-1-first tests penholder; 3-2-second tests penholder; 3-3-the 3rd tests penholder;
3-4-test nib; The 4-the second test test pencil; 4-1-instrument connection;
5-microprocessor module; 6-power module; 7-data-carrier store module;
8-wireless communication module; 9-A/D change-over circuit module; 10-key circuit module;
11-liquid crystal display circuit module; 12-metering circuit module;
12-1-function selector circuit module; 12-2-current-to-voltage converting circuit module;
12-3-AC/DC change-over circuit module; 12-4-resistive voltage change-over circuit module;
12-5-range change-over circuit module; 13-LED lamp; 14-1-first swivel pin;
14-2-second swivel pin; 15-double-layer circuit board.
Embodiment
Such as Fig. 1, Fig. 2 and shown in Figure 3, the utility model comprises multimeter housing 1, be arranged on function and range conversion knob 2 and the multimeter circuit that is arranged on multimeter housing 1 inside on the multimeter housing 1, be plugged with the first test test pencil 3 and the second test test pencil 4 on the described multimeter housing 1, it is characterized in that: described multimeter circuit comprises metering circuit module 12, microprocessor module 5 and be the power module 6 of each electricity consumption module for power supply in the multimeter circuit, and the data-carrier store module 7 and the wireless communication module 8 that join with described microprocessor module 5, the input end of described microprocessor module 5 is connected to A/D change-over circuit module 9 and is used for the key circuit module 10 of input control parameter, and the output terminal of described microprocessor module 5 is connected to the liquid crystal display circuit module 11 for the display measurement result; Described metering circuit module 12 comprises function selector circuit module 12-1 and the range change-over circuit module 12-5 that joins with function selector circuit module 12-1 output terminal, the output terminal of described function selector circuit module 12-1 is connected to current-to-voltage converting circuit module 12-2, AC/DC change-over circuit module 12-3 and resistive voltage change-over circuit module 12-4, described current-to-voltage converting circuit module 12-2, AC/DC change-over circuit module 12-3 and resistive voltage change-over circuit module 12-4 all join with the input end of described range change-over circuit module 12-5, the output terminal of described range change-over circuit module 12-5 and the input end of described A/D change-over circuit module 9 join, described function and range conversion knob 2 all join with function selector circuit module 12-1 and range change-over circuit module 12-5, described the first test test pencil 3 and the second test test pencil 4 all join with the input end of function selector circuit module 12-1, and described key circuit module 10 and liquid crystal display circuit module 11 all are exposed on the outside surface of described multimeter housing 1 outward; Described the first test test pencil 3 comprises the many hinged test nib 3-4 that test penholder and be fixedly connected with the test penholder that is positioned at test lead, and the described second test lead of testing test pencil 4 is provided with instrument connection 4-1.
In the present embodiment, described microprocessor module 5 is single-chip microcomputer.Described data-carrier store module 7 is the Flash data-carrier store.Described wireless communication module 8 is infrared communication module, bluetooth communication, GPRS module, CDMA module or 3G module.
As shown in Figure 3, in the present embodiment, the quantity of described test penholder is three and is respectively the first test penholder 3-1, the second test penholder 3-2 and the 3rd test penholder 3-3, and described test nib 3-4 and the described the 3rd tests penholder 3-3 and is fixedly connected with.Described the second test penholder 3-2 and the first test penholder 3-1 are hinged by the first swivel pin 14-1, and described the 3rd test penholder 3-3 and the second test penholder 3-2 are hinged by the second swivel pin 14-2.Described the first test penholder 3-1, the second test penholder 3-2 and the 3rd test penholder 3-3 are cylindrical, and the external diameter of the external diameter of described the first test penholder 3-1, the second test penholder 3-2 and the external diameter of the 3rd test penholder 3-3 are arranged successively from big to small.Be provided with LED lamp 13 on described the 3rd test penholder 3-3, described LED lamp 13 joins with the output terminal of described microprocessor module 5.
Principle of work of the present utility model and the course of work are: the user opens this digital multimeter by operation push-button circuit module 10, the user determines measurement function and range by operating function and range conversion knob 2, the user is connected on corresponding test position place with the first test test pencil 3 and the second test test pencil 4, begins to measure accordingly; When measuring DC voltage, the d. c. voltage signal that the first test test pencil 3 and the second test test pencil 4 detect is exported to microprocessor module 5 through function selector circuit module 12-1, range change-over circuit module 12-5 and A/D change-over circuit module 9 successively; When measuring alternating current, the ac current signal that the first test test pencil 3 and the second test test pencil 4 detect is exported to microprocessor module 5 through function selector circuit module 12-1, current-to-voltage converting circuit module 12-2, AC/DC change-over circuit module 12-3, range change-over circuit module 12-5 and A/D change-over circuit module 9 successively; When measuring alternating voltage, the AC current-voltage that the first test test pencil 3 and the second test test pencil 4 detect is exported to microprocessor module 5 through function selector circuit module 12-1, AC/DC change-over circuit module 12-3, range change-over circuit module 12-5 and A/D change-over circuit module 9 successively; When measuring resistance, the AC current-voltage that the first test test pencil 3 and the second test test pencil 4 detect is exported to microprocessor module 5 through function selector circuit module 12-1, resistive voltage change-over circuit module 12-4, range change-over circuit module 12-5 and A/D change-over circuit module 9 successively; The signal that 5 pairs of A/D change-over circuits of microprocessor module module 9 is exported to it carries out analyzing and processing, obtains result and control liquid crystal display circuit module 11 showing; In addition, microprocessor module 5 can also be wirelessly sent to result the equipment such as user mobile phone, computing machine by wireless communication module 8, has made things convenient for further analyzing and processing and the storage of measurement result.Because the first test test pencil 3 comprises the hinged written 3-4 of the many tests of testing penholder and being fixedly connected with the test penholder that is positioned at test lead, therefore, as shown in Figure 3, this the first test test pencil 3 can bend, can extend in the zone that the common test test pencils such as double-layer circuit board 15 are difficult to measure, the circuit board parameter is measured; Owing to being provided with LED lamp 13 on the 3rd test penholder 3-3, so LED lamp 13 can also throw light on to test zone, is more convenient for measuring.Because the test lead of the second test test pencil 4 is provided with instrument connection 4-1, so the two ends metal connection of resistance can penetrate among the instrument connection 4-1 easily, made things convenient for and adopted this digital multimeter to carry out the measurement of resistance value.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.
Claims (8)
1. digital multimeter, comprise multimeter housing (1), be arranged on function and the range conversion knob (2) on the multimeter housing (1) and be arranged on the inner multimeter circuit of multimeter housing (1), be plugged with the first test test pencil (3) and the second test test pencil (4) on the described multimeter housing (1), it is characterized in that: described multimeter circuit comprises metering circuit module (12), microprocessor module (5) and be the power module (6) of each electricity consumption module for power supply in the multimeter circuit, and the data-carrier store module (7) and the wireless communication module (8) that join with described microprocessor module (5), the input end of described microprocessor module (5) is connected to A/D change-over circuit module (9) and is used for the key circuit module (10) of input control parameter, and the output terminal of described microprocessor module (5) is connected to the liquid crystal display circuit module (11) for the display measurement result; Described metering circuit module (12) comprises function selector circuit module (12-1) and the range change-over circuit module (12-5) of joining with function selector circuit module (12-1) output terminal, the output terminal of described function selector circuit module (12-1) is connected to current-to-voltage converting circuit module (12-2), AC/DC change-over circuit module (12-3) and resistive voltage change-over circuit module (12-4), described current-to-voltage converting circuit module (12-2), AC/DC change-over circuit module (12-3) and resistive voltage change-over circuit module (12-4) are all joined with the input end of described range change-over circuit module (12-5), the input end of the output terminal of described range change-over circuit module (12-5) and described A/D change-over circuit module (9) joins, described function and range conversion knob (2) all join with function selector circuit module (12-1) and range change-over circuit module (12-5), described the first test test pencil (3) and the second test test pencil (4) all join with the input end of function selector circuit module (12-1), and described key circuit module (10) and liquid crystal display circuit module (11) all are exposed on the outside surface of described multimeter housing (1) outward; Described the first test test pencil (3) comprises the many hinged test nibs (3-4) of testing penholder and being fixedly connected with the test penholder that is positioned at test lead, and the described second test lead of testing test pencil (4) is provided with instrument connection (4-1).
2. according to a kind of digital multimeter claimed in claim 1, it is characterized in that: described microprocessor module (5) is single-chip microcomputer.
3. according to a kind of digital multimeter claimed in claim 1, it is characterized in that: described data-carrier store module (7) is the Flash data-carrier store.
4. according to a kind of digital multimeter claimed in claim 1, it is characterized in that: described wireless communication module (8) is infrared communication module, bluetooth communication, GPRS module, CDMA module or 3G module.
5. according to a kind of digital multimeter claimed in claim 1, it is characterized in that: the quantity of described test penholder is three and is respectively the first test penholder (3-1), the second test penholder (3-2) and the 3rd test penholder (3-3), and described test written (3-4) and the described the 3rd is tested penholder (3-3) and is fixedly connected with.
6. according to a kind of digital multimeter claimed in claim 5, it is characterized in that: described the second test penholder (3-2) is hinged by the first swivel pin (14-1) with the first test penholder (3-1), and described the 3rd test penholder (3-3) is hinged by the second swivel pin (14-2) with the second test penholder (3-2).
7. according to claim 5 or 6 described a kind of digital multimeter, it is characterized in that: described the first test penholder (3-1), the second test penholder (3-2) and the 3rd test penholder (3-3) are cylindrical, and the external diameter of the external diameter of described the first test penholder (3-1), the second test penholder (3-2) and the external diameter of the 3rd test penholder (3-3) are arranged successively from big to small.
8. according to claim 5 or 6 described a kind of digital multimeter, it is characterized in that: be provided with LED lamp (13) on described the 3rd test penholder (3-3), described LED lamp (13) joins with the output terminal of described microprocessor module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320186372 CN203204028U (en) | 2013-04-13 | 2013-04-13 | Digital multimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320186372 CN203204028U (en) | 2013-04-13 | 2013-04-13 | Digital multimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203204028U true CN203204028U (en) | 2013-09-18 |
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ID=49148124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320186372 Expired - Fee Related CN203204028U (en) | 2013-04-13 | 2013-04-13 | Digital multimeter |
Country Status (1)
| Country | Link |
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| CN (1) | CN203204028U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316743A (en) * | 2014-11-05 | 2015-01-28 | 安徽荃富信息科技有限公司 | Intelligent universal meter |
| CN104360121A (en) * | 2014-11-05 | 2015-02-18 | 安徽荃富信息科技有限公司 | Universal meter with measurement data sharing function |
| CN104932287A (en) * | 2015-06-01 | 2015-09-23 | 江苏省电力公司 | Simulated universal meter |
| CN105137143A (en) * | 2015-09-11 | 2015-12-09 | 成都华兴智造科技有限公司 | Wireless universal meter with multi-corner meter position detection point displaying function |
| CN111693747A (en) * | 2020-07-23 | 2020-09-22 | 上海四达电子仪表有限公司 | Universal meter |
| CN114325026A (en) * | 2021-12-15 | 2022-04-12 | 贵州电网有限责任公司 | Novel universal meter testing device |
-
2013
- 2013-04-13 CN CN 201320186372 patent/CN203204028U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316743A (en) * | 2014-11-05 | 2015-01-28 | 安徽荃富信息科技有限公司 | Intelligent universal meter |
| CN104360121A (en) * | 2014-11-05 | 2015-02-18 | 安徽荃富信息科技有限公司 | Universal meter with measurement data sharing function |
| CN104932287A (en) * | 2015-06-01 | 2015-09-23 | 江苏省电力公司 | Simulated universal meter |
| CN105137143A (en) * | 2015-09-11 | 2015-12-09 | 成都华兴智造科技有限公司 | Wireless universal meter with multi-corner meter position detection point displaying function |
| CN111693747A (en) * | 2020-07-23 | 2020-09-22 | 上海四达电子仪表有限公司 | Universal meter |
| CN114325026A (en) * | 2021-12-15 | 2022-04-12 | 贵州电网有限责任公司 | Novel universal meter testing device |
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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: 20130918 Termination date: 20140413 |