CN201909613U - Digital display of digital caliper - Google Patents
Digital display of digital caliper Download PDFInfo
- Publication number
- CN201909613U CN201909613U CN2010201487835U CN201020148783U CN201909613U CN 201909613 U CN201909613 U CN 201909613U CN 2010201487835 U CN2010201487835 U CN 2010201487835U CN 201020148783 U CN201020148783 U CN 201020148783U CN 201909613 U CN201909613 U CN 201909613U
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- circuit
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- display
- button
- calliper
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model discloses a digital display used on a digital caliper. The external structure comprises a shell, a display screen, six keys and a battery cover; and the internal system comprises a capacitive grating sensor circuit, a power supply circuit, a control circuit, a shaping circuit, an amplifying circuit, a decoding circuit and a display circuit. The display range of the digital display is between 0mm and 500mm, and the digital display can select and display three types of resolution. The patent disclosed by the utility model has the advantages of low cost, small size, high efficiency, visual readings and multi-resolution selection and display function.
Description
Technical field
The utility model relates to a kind of digital indicator of digital display calliper, belongs to the digital display electronic technology field.
Background technology
The development of display has had the history of decades, and present topmost display has CRT monitor, LCD display, light-emitting diode display and plasma display etc.CRT monitor is a kind of cathode-ray tube display, has color effect better and do not have advantage such as delays, but radiation is big and use in problem of aging serious, volume greatly, Heavy Weight.LCD display is a LCD, advantage such as have that the LCD volume is little, in light weight, power consumption is little, radiation is little and picture is stable, but on the high side, color effect is not as good as CRT.Advantages such as plasma display sharpness height, image-distortion-free and rich color, but have cost an arm and a leg, power consumption is big, damage can not be repaired and the display panel life-span is lower shortcoming.
Because the digital indicator of digital display calliper is the display of receiving digital signals, carry out product length, internal diameter, outward through etc. measurement data show and use, only need ten data of 0-9 be shown, therefore only need to use the seven segment numerical tube display to get final product.Seven-segment display mainly contains fluorescent character-display tube, semiconductor (LED charactron), liquid crystal numberal tube.The LED charactron is the display of more convenient use in the digital circuit, it has common cathode and is total to two kinds of connections of anode, have that brightness height, life-span are long, individual pixel is damaged and can be repaired, low cost and other advantages, shortcoming is because its dot density is not high, visual effect is not good, therefore is not suitable for closely watching.
Summary of the invention
At the problem of aforementioned display device technology and production cost existence, the utility model provides a kind of digital display calliper digital indicator.
For achieving the above object, the solution that the utility model is taked is, the external structure of this product comprises casing, display screen, 6 buttons and battery cover; Built-in system is made up of capacitor grid transducer circuit, power circuit, control circuit, shaping circuit, amplifying circuit, decoding scheme and display circuit.The display part is made up of 6 seven segment digital tubes, and wherein, first three charactron shows integral part numerical value, and back three charactrons show fraction part numerical value; 6 buttons comprise 3 common key-press and 3 resolution selection keys, wherein, 3 common key-press are respectively power button, metric and English conversion keys and zero clearing button, and 3 resolution selection keys comprise that respectively resolution is the button of 0.001mm, the button of 0.01mm and the button of 0.1mm.
The external structure of described display comprises casing (101), display screen (102), button (103,104) and battery cover (105); Built-in system is made up of capacitor grid transducer circuit, power circuit, control circuit, shaping circuit, amplifying circuit, decoding scheme and display circuit; Described capacitor grid transducer circuit, power circuit, control circuit, shaping circuit, amplifying circuit, decoding scheme and display circuit place in the described casing (101), described display screen (102), button (103,104) and battery cover (105) are positioned at described casing (101) upper surface (as shown in Figure 1).
Display is made up of the seven segment digital tubes more than at least 1 or 1;
Comprise voltage regulator circuit in the described decoding scheme, the current value that seven each sections of digital indicator are flow through in control is close;
Described button (103,104) lays respectively at described casing (101) upper surface and in display screen (102) both sides up and down;
Described button (103) comprises 3 common key-press; Described button (104) comprises 3 resolution selection keys;
3 common key-press are respectively power button, metric and English conversion keys and zero clearing button, and 3 resolution selection keys comprise that respectively resolution is the button of 0.001mm, the button of 0.01mm and the button of 0.1mm;
The length signals of described capacitor grid transducer collection is to carry out data processing by shaping circuit and amplifying circuit;
Control circuit adopts dsp chip as core;
Decoding scheme is the center with programmable logic array FPGA mainly, and drives demonstration;
The utility model adopts the length of capacitor grid transducer induction measurand, be a kind of good reproducibility with Displacement Measurement, precision height, in light weight, low in energy consumption, antijamming capability strong and the capacitance type sensor of advantage such as anti-pollution, shaping circuit and amplifying circuit are used for the length electric signal of capacitor grid transducer collection is carried out data processing, control circuit adopts the orderly work of dsp chip as core, control peripheral circuits, decoding scheme is the center with programmable logic array FPGA mainly, and 6 seven segment digital tubes of driving display circuit show.Wherein, comprise voltage regulator circuit in the decoding scheme, the current value that seven each sections of digital indicator are flow through in control is close.
The utility model possesses following advantage:
At first, the digital indicator circuit structure is simpler, more reliable;
Secondly, in the process of transmission, almost do not have the loss of digital signal, so the fidelity of digital indicator is very high, and visual effect is better;
At last, disturb for a short time in the digital indicator, therefore can manifest dynamic digital information more clearly.
Description of drawings
Fig. 1 is the utility model front schematic view;
Fig. 2 is the inner structure synoptic diagram of digital indicator.
Embodiment
Below by drawings and Examples the utility model is described further:
As shown in Figure 1, visual four parts of digital indicator portion of external on the digital display calliper are respectively casing, display screen, 6 buttons and battery cover.The display part is made up of 6 seven segment digital tubes, 6 buttons comprise 3 common key-press and 3 resolution selection keys, wherein, 3 common key-press are respectively power button, metric and English conversion keys and zero clearing button, and 3 resolution selection keys comprise that respectively resolution is the button of 0.001mm, the button of 0.01mm and the button of 0.1mm.
Described shaping circuit and amplifying circuit are used for the length signals of capacitor grid transducer collection is carried out data processing.
Described control circuit adopts dsp chip as core.
Described decoding scheme is the center with programmable logic array FPGA mainly, and drives demonstration.Comprise voltage regulator circuit in the decoding scheme, the current value that seven each sections of digital indicator are flow through in control is close, makes the luminous intensity of each section of charactron close substantially.
As shown in Figure 2, the utility model is the digital indicator of using on a kind of digital display calliper, and built-in system is made up of capacitor grid transducer circuit, power circuit, control circuit, shaping circuit, amplifying circuit, decoding scheme and display circuit.The utility model adopts the length of capacitor grid transducer induction measurand, it is a kind of capacitance type sensor with advantages such as in light weight, low in energy consumption and anti-pollutions, shaping circuit and amplifying circuit are used for the length electric signal of capacitor grid transducer collection is carried out data processing, control circuit adopts the orderly work of dsp chip as core, control peripheral circuits, decoding scheme is the center with programmable logic array FPGA mainly, and 6 seven segment digital tubes of driving display circuit show.
Behind the power circuit normal power supply of above-mentioned digital indicator, system begins initialization, control circuit control capacitor grid transducer induction outer length information, and a corresponding information is converted into the electric signal that Circuits System can be discerned, electric signal is through the processing of shaping circuit and amplifying circuit, send into decoding scheme by control circuit based on programmable logic array FPGA, after decoding finishes, the decoding end signal is returned controller, trigger the decode results that display circuit receives decoding scheme by controller, and display result is shown by 6 seven segment digital tubes.
A kind of digital display calliper digital indicator of the utility model has simple in structure, energy-conservation, convenient and advantage such as visual effect is good, and simultaneously, its multiresolution measurement function makes it possess more wide application space.
Claims (8)
1. the digital display calliper digital indicator is characterized in that, the external structure of described display comprises casing (101), display screen (102), button (103,104) and battery cover (105); Built-in system is made up of capacitor grid transducer circuit, power circuit, control circuit, shaping circuit, amplifying circuit, decoding scheme and display circuit; Described capacitor grid transducer circuit, power circuit, control circuit, shaping circuit, amplifying circuit, decoding scheme and display circuit place in the described casing (101), described display screen (102), button (103,104) and battery cover (105) are positioned at described casing (101) upper surface.
2. digital display calliper digital indicator according to claim 1 is characterized in that display is made up of the seven segment digital tubes more than at least 1 or 1.
3. digital display calliper digital indicator according to claim 1 is characterized in that, comprises voltage regulator circuit in the described decoding scheme, and the current value that seven each sections of digital indicator are flow through in control is close.
4. digital display calliper digital indicator according to claim 1 is characterized in that, described button (103,104) lays respectively at described casing (101) upper surface and in display screen (102) both sides up and down.
5. according to claim 1 or 4 any described digital display calliper digital indicators, it is characterized in that described button (103) comprises 3 common key-press;
Described button (104) comprises 3 resolution selection keys.
6. digital display calliper digital indicator according to claim 1 is characterized in that, the length signals of described capacitor grid transducer collection is to carry out data processing by shaping circuit and amplifying circuit.
7. digital display calliper digital indicator according to claim 1 is characterized in that, control circuit adopts dsp chip as core.
8. digital display calliper digital indicator according to claim 1 is characterized in that, decoding scheme is the center with programmable logic array FPGA mainly, and drives demonstration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201487835U CN201909613U (en) | 2010-03-18 | 2010-03-18 | Digital display of digital caliper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201487835U CN201909613U (en) | 2010-03-18 | 2010-03-18 | Digital display of digital caliper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201909613U true CN201909613U (en) | 2011-07-27 |
Family
ID=44301814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201487835U Expired - Fee Related CN201909613U (en) | 2010-03-18 | 2010-03-18 | Digital display of digital caliper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201909613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502233A (en) * | 2014-12-08 | 2015-04-08 | 柳州铁道职业技术学院 | FPGA-based cement thickness tester |
-
2010
- 2010-03-18 CN CN2010201487835U patent/CN201909613U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502233A (en) * | 2014-12-08 | 2015-04-08 | 柳州铁道职业技术学院 | FPGA-based cement thickness tester |
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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: 20110727 Termination date: 20120318 |