CN202275109U - Pen-shaped digital DC single table - Google Patents
Pen-shaped digital DC single table Download PDFInfo
- Publication number
- CN202275109U CN202275109U CN2011203367565U CN201120336756U CN202275109U CN 202275109 U CN202275109 U CN 202275109U CN 2011203367565 U CN2011203367565 U CN 2011203367565U CN 201120336756 U CN201120336756 U CN 201120336756U CN 202275109 U CN202275109 U CN 202275109U
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- CN
- China
- Prior art keywords
- pen
- nib
- circuit
- stroke
- combination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The utility model relates to a measuring device for displaying current parameters, especially to a pen-shaped digital DC single table, for solving the carrying and usage inconvenient problems caused by that technical personnel use a conventional multimeter to test DC values. The structure of the pen-shaped digital DC single table comprises a pen-shaped shell of which the front end is equipped with a testing nib, and the testing nib is inwards connected with a spring, a battery, a current test circuit, a socket and a grounding nib orderly. The beneficial effects of the utility model are that by using the pen-shaped shell, various devices are integrated in the pen-shaped shell, the shape is like a common test pencil or a pen, being small in volume and convenient in carrying; the pen-shaped digital DC single table can be carried with people like carrying a test pencil and can be inserted in a pocket; the pen-shaped digital DC single table is simple in operation, small in error and concise in data, is power-saving, has a single-range, and can display single current parameters.
Description
Technical field
The utility model relates to a kind of measurement mechanism that shows current parameters, specifically is that a kind of form of a stroke or a combination of strokes digital DC electric current list is with table.
Background technology
Known multimeter can detect electric current, but volume is big, can not as electroscope, take with oneself all the time, brings very big inconvenience to measurement; And at present multimeter to pursue function as far as possible many; AC/DC voltage; In the tables that coexist such as AC/DC electric current, resistance, electric capacity, inductance, buzzing, diode, triode, signal generator; A lot of parameters are that following of our most of workplace is unwanted, and we more often only want to read the current value in the operational outfit.Power consumption is big: the integrated function of such multimeter is many, a-table-multi-purpose, and circuit is many, and power consumption is big, and it is bigger to use single-chip microcomputer to do the multimeter power consumption of A/D converter.Measuring accuracy is low, and interface and switch are many, causes contact resistance big, influences measuring accuracy.Operation inconvenience, the many misoperationes easily of gear.The local damage easily that environment is bad.And at present, whether known test pencil can only be used for testing measured object charged.Can not distinguish virtual voltage and induced potential.More can not be used for detecting electric current.But the design of its form of a stroke or a combination of strokes is very portable, and is easy to use.
Summary of the invention
The utility model carries and awkward problem for the technical solution personnel use existing multimeter to test DC current values, provides a kind of form of a stroke or a combination of strokes digital DC electric current list with table.
The utility model is to adopt following technical scheme to realize: a kind of form of a stroke or a combination of strokes digital DC electric current list is with table; Structure comprises the shell of the form of a stroke or a combination of strokes; At the shell front end test nib is housed, the test nib inwardly is connected with spring, battery, current testing circuit, socket, ground connection nib in turn; Described current testing circuit comprises A/D converter; A/D Acquisition Circuit, LCD MODULE, energising/reading hold button circuit, A/D converter connect A/D Acquisition Circuit, LCD MODULE, energising/reading hold button circuit respectively, and described A/D Acquisition Circuit is connected with the ground connection nib with the test nib.
The end of shell is provided with two sockets, and the ground connection test pencil inserts different sockets to select different electric current gears.
Compare with existing product, the beneficial effect of the utility model is to have used the shell of the form of a stroke or a combination of strokes; Various components and parts are integrated in the form of a stroke or a combination of strokes housing, similar common test pencil of shape or pen, volume is little; Easy to carry, can as electroscope can carry on one's body, be inserted in the pocket; Simple to operate, power saving: error is little, single range, and single current parameters shows that data are succinct.
Description of drawings
Fig. 1 is the structural representation of the utility model
Fig. 2 is the circuit theory diagrams of the utility model
Among the figure: 1-tests nib, the 2-spring, and 3-locate the storehouse, and 4, the 5-socket, the 6-current testing circuit, 7-ground connection is written, 8-shell, 9-battery, 10-A/D Acquisition Circuit, 11-A/D converter, 12-LCD MODULE, 13-energising/reading hold button circuit.
Embodiment
Meaning as shown in Figure 1; A kind of form of a stroke or a combination of strokes digital DC electric current list is with table; Structure comprises the shell 8 of the form of a stroke or a combination of strokes, at shell 8 front ends test nib 1 is housed, test nib 1 inwardly is connected with spring 2, battery 9, current testing circuit 6, socket, ground connection nib 7, meaning as shown in Figure 2 in turn; Described current testing circuit 6 comprises A/D converter 11; A/D Acquisition Circuit 10, LCD MODULE 12, energising/reading hold button circuit 13, A/D converter 11 connect A/D Acquisition Circuit 10, LCD MODULE 12, energising/reading hold button circuit 13 respectively, and described A/D Acquisition Circuit 10 is connected with ground connection nib 7 with test nib 1.
Be provided with storehouse 3, location in the shell 8 of the described form of a stroke or a combination of strokes, described spring 2, battery 9, resistance test circuit 6 are fixed on the storehouse 3, location.Each circuit elements device is installed in the storehouse, location like this, fills in the shell of the form of a stroke or a combination of strokes and insulation-encapsulated from shell 8 rear ends again, installs succinct.Housing is the bakelite material, and is durable.
Described socket is positioned at the end of shell 8, and quantity is two, is 200mA direct current shelves and 2A direct current shelves, and one is used to measure the following DC current of 200mA, one and is used to measure the following DC current of 2A.The ground connection test pencil inserts different sockets to select the electric current gear, no longer establishes GSS Gear Select Switch.The one of which socket is connected with the ground connection test pencil during use; With ground connection test pencil contact circuit-under-test one end, form of a stroke or a combination of strokes digital DC electric current list contacts measured electric circuit inspection point with the nib of table, presses the button and reads flow valuve, and release button reads the current indication that keeps demonstration.A/D converter adopts GC7240B type integrated circuit during practical implementation, joins a small amount of components and parts outward.Battery adopts two joint AG5 type button cells.
Body has only a pushbutton switch; When button was pressed, power connection was avoided unnecessary waste electric energy; Button unclamps promptly cuts off the electricity supply; Connect the reading holding circuit simultaneously, capacitor discharge is kept meter reading and is shown 2-3 second, is applicable to that the place of the narrow and small inconvenient reading in place and space of down-hole, dark is used.Can at will insert a section lead when ground connection nib is not with at one's side replaces the ground connection test pencil to use.
Claims (4)
1. a form of a stroke or a combination of strokes digital DC electric current list is with table; It is characterized in that: structure comprises the shell (8) of the form of a stroke or a combination of strokes; At shell (8) front end test nib (1) is housed, test nib (1) inwardly is serially connected with spring (2), battery (9), current testing circuit (6), socket, ground connection nib (7) successively; Described current testing circuit (6) comprises A/D converter (11); A/D Acquisition Circuit (10), LCD MODULE (12), energising/reading hold button circuit (13); A/D converter (11) connects A/D Acquisition Circuit (10), LCD MODULE (12), energising/reading hold button circuit (13) respectively, and described A/D Acquisition Circuit (10) is connected with ground connection nib (7) with test nib (1).
2. form of a stroke or a combination of strokes digital DC electric current list according to claim 1 is with table, and it is characterized in that: described socket is positioned at the end of housing (8), and quantity is two.
3. form of a stroke or a combination of strokes digital DC electric current list according to claim 1 is characterized in that with table: be provided with storehouse (3), location in the described shell (8), described spring (2), battery (9), current testing circuit (6) are fixed on the storehouse, location (3).
4. form of a stroke or a combination of strokes digital DC electric current list according to claim 1 is characterized in that with table: A/D converter (11) adopts GC7240B type integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203367565U CN202275109U (en) | 2011-09-08 | 2011-09-08 | Pen-shaped digital DC single table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203367565U CN202275109U (en) | 2011-09-08 | 2011-09-08 | Pen-shaped digital DC single table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275109U true CN202275109U (en) | 2012-06-13 |
Family
ID=46195457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203367565U Expired - Lifetime CN202275109U (en) | 2011-09-08 | 2011-09-08 | Pen-shaped digital DC single table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202275109U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652072A (en) * | 2016-03-15 | 2016-06-08 | 中山纽创自动化科技有限公司 | Digital display test pencil with illuminating function |
| CN108761180A (en) * | 2018-06-28 | 2018-11-06 | 深圳市华博精测科技有限公司 | Non-contact voltage Probing pen |
-
2011
- 2011-09-08 CN CN2011203367565U patent/CN202275109U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652072A (en) * | 2016-03-15 | 2016-06-08 | 中山纽创自动化科技有限公司 | Digital display test pencil with illuminating function |
| CN108761180A (en) * | 2018-06-28 | 2018-11-06 | 深圳市华博精测科技有限公司 | Non-contact voltage Probing pen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |
|
| CX01 | Expiry of patent term |