CN204202504U - A kind of electronics ruler - Google Patents
A kind of electronics ruler Download PDFInfo
- Publication number
- CN204202504U CN204202504U CN201420602537.0U CN201420602537U CN204202504U CN 204202504 U CN204202504 U CN 204202504U CN 201420602537 U CN201420602537 U CN 201420602537U CN 204202504 U CN204202504 U CN 204202504U
- Authority
- CN
- China
- Prior art keywords
- resistance wire
- chi body
- slide rail
- slide plate
- circuit
- 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 - Fee Related
Links
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- Length-Measuring Instruments Using Mechanical Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model proposes a kind of electronics ruler, solve existing ruler measuring accuracy poor, easily introduce the problem of error.Comprise chi body, pointer, slide plate, resistance wire, A/D convertor circuit, computing circuit, display device and supply unit; The upper surface of chi body is provided with scale along its length, and chi body inside is provided with a cavity, and the length of cavity equals or slightly larger than the range of scale; Resistance wire to be wrapped on an insulating trip and to be loaded in cavity; The upper surface of chi body is provided with a conductiving slide rail, and slide plate is installed on conductiving slide rail movably, and the upper surface of chi body offers groove along its length, and the bottom surface of slide plate is convexly equipped with a salient point, and salient point contacts with resistance wire through groove and connects; One end of pointer is fixedly connected with slide plate, and the other end points to scale; On one end that the positive and negative electrode of A/D convertor circuit input end is connected to resistance wire and conductiving slide rail; The output terminal of A/D convertor circuit is electrically connected with the input end of computing circuit, and the output terminal of computing circuit is electrically connected with display device.
Description
Technical field
The utility model relates to a kind of survey instrument, particularly a kind of electronics ruler.
Background technology
Traditional ruler does not have display device, eyes only with operator directly observe the scale of ruler to determine the length of measured object, when measuring, because of difference or the visual angle difference of survey crew, make measuring error larger, precision is relatively low, and be subject to the correct degree impact of gauger's skill level and operation, easily cause artificial deviation, at some, measuring accuracy is required that higher occasion cannot provide relatively accurate measurement data, and measuring speed is comparatively slow, is unfavorable for the production of high-accuracy product.
Utility model content
The utility model proposes a kind of electronics ruler, solve existing ruler measuring accuracy poor, be subject to the problem that Human disturbance introduces error.
The technical solution of the utility model is achieved in that
A kind of electronics ruler, comprise chi body, the upper surface of described chi body is provided with scale along its length, also comprises pointer, slide plate, resistance wire, A/D convertor circuit, computing circuit, display device and supply unit; Described chi body inside is provided with a cavity, and the length of this cavity equals or slightly larger than the range of described scale; Described resistance wire to be wrapped on an insulating trip and to be loaded in described cavity;
The upper surface of described chi body is provided with a conductiving slide rail, described slide plate is installed on described conductiving slide rail movably, the upper surface of described chi body offers a groove along its length, and the bottom surface of described slide plate is convexly equipped with a salient point, and this salient point passes described groove and contacts with described resistance wire and connects; One end of described pointer is fixedly connected with described slide plate, and the other end points to described scale;
On one end that the positive and negative electrode of described A/D convertor circuit input end is connected to described resistance wire and described conductiving slide rail; The output terminal of described A/D convertor circuit is electrically connected with the input end of described computing circuit, and the output terminal of described computing circuit is electrically connected with described display device.
Further, described insulating trip is plastic sheet or potsherd.
Further, described conductiving slide rail is aluminium slide rail or copper slide rail.
Further, the diameter of described resistance wire is less than 0.5mm.
Further, the upper gripping block being also connected with an insulation of described slide plate.
Known by describing above, compared with prior art, the utility model tool has the following advantages the utility model:
The utility model, by by the resistance signal of resistance wire, is converted to digital signal by A/D convertor circuit, by carrying out computing to digital signal, will convert air line distance range value to and being shown by display device, has intuitively, measures the advantages such as accurate.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the theory diagram of circuit unit of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
See figures.1.and.2, a kind of electronics ruler, comprise chi body 1, the upper surface of described chi body 1 is provided with scale 2 along its length, also comprise pointer 4, slide plate 31, resistance wire 32 and circuit unit 3, described circuit unit 3 comprises A/D convertor circuit 33, computing circuit 34, display device 35 and supply unit 36; Described chi body 1 inside is provided with a cavity, and the length of this cavity equals or slightly larger than the range of described scale 2; Described resistance wire 32 to be wrapped on an insulating trip 33 and to be loaded in described cavity; Described insulating trip 33 can select plastic sheet or potsherd.
The upper surface of described chi body 1 is provided with a conductiving slide rail 37, the metal guide rail that this electric conductivity such as conductiving slide rail 37 excellent aluminium slide rail or copper slide rail is good, also can adopt the nonmetal guide rail that the electric conductivities such as graphite guide rail are good.Described slide plate 31 is installed on described conductiving slide rail 37 movably, and the upper surface of described chi body 1 offers a groove along its length, and the bottom surface of described slide plate 31 is convexly equipped with a salient point, and this salient point passes described groove and contacts with described resistance wire 32 and connects; One end of described pointer 4 is fixedly connected with described slide plate 31, and the other end points to described scale 2.
On one end that the positive and negative electrode of described A/D convertor circuit 33 input end is connected to described resistance wire 32 and described conductiving slide rail 37; The output terminal of described A/D convertor circuit 33 is electrically connected with the input end of described computing circuit 34, and the output terminal of described computing circuit 34 is electrically connected with described display device 35, and described display device 35 comprises display screen 351 and display driver circuit; Supply unit 36 comprises battery and mu balanced circuit, and circuit theory of the present utility model is simple, and A/D convertor circuit, computing circuit, display driver circuit, mu balanced circuit etc. all can adopt existing common circuit, have the advantages such as cost is low, circuit stability.
In order to improve measuring accuracy, resistance wire 32 diameter of the present utility model is less makes an appointment, and the diameter of general resistance wire is less than 0.5mm.Because human body exists certain resistance and electric conductivity, in order to reduce human body in the overshoot of slip slide plate on the impact of measurement result, the utility model is at the upper gripping block being also connected with an insulation of described slide plate 31.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. an electronics ruler, comprises chi body, and the upper surface of described chi body is provided with scale along its length, it is characterized in that: also comprise pointer, slide plate, resistance wire, A/D convertor circuit, computing circuit, display device and supply unit; Described chi body inside is provided with a cavity, and the length of this cavity equals or slightly larger than the range of described scale; Described resistance wire to be wrapped on an insulating trip and to be loaded in described cavity;
The upper surface of described chi body is provided with a conductiving slide rail, described slide plate is installed on described conductiving slide rail movably, the upper surface of described chi body offers a groove along its length, and the bottom surface of described slide plate is convexly equipped with a salient point, and this salient point passes described groove and contacts with described resistance wire and connects; One end of described pointer is fixedly connected with described slide plate, and the other end points to described scale;
On one end that the positive and negative electrode of described A/D convertor circuit input end is connected to described resistance wire and described conductiving slide rail; The output terminal of described A/D convertor circuit is electrically connected with the input end of described computing circuit, and the output terminal of described computing circuit is electrically connected with described display device.
2. a kind of electronics ruler as claimed in claim 1, is characterized in that: described insulating trip is plastic sheet or potsherd.
3. a kind of electronics ruler as claimed in claim 1, is characterized in that: described conductiving slide rail is aluminium slide rail or copper slide rail.
4. a kind of electronics ruler as claimed in claim 1, is characterized in that: the diameter of described resistance wire is less than 0.5mm.
5. a kind of electronics ruler as claimed in claim 1, is characterized in that: the upper gripping block being also connected with an insulation of described slide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420602537.0U CN204202504U (en) | 2014-10-16 | 2014-10-16 | A kind of electronics ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420602537.0U CN204202504U (en) | 2014-10-16 | 2014-10-16 | A kind of electronics ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204202504U true CN204202504U (en) | 2015-03-11 |
Family
ID=52660451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420602537.0U Expired - Fee Related CN204202504U (en) | 2014-10-16 | 2014-10-16 | A kind of electronics ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204202504U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783632A (en) * | 2015-12-26 | 2016-07-20 | 深圳市易特科信息技术有限公司 | Resistor screw measuring apparatus |
| WO2017133307A1 (en) * | 2016-02-03 | 2017-08-10 | 深圳市易特科信息技术有限公司 | High-precision, resistance-based screw measuring device |
-
2014
- 2014-10-16 CN CN201420602537.0U patent/CN204202504U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783632A (en) * | 2015-12-26 | 2016-07-20 | 深圳市易特科信息技术有限公司 | Resistor screw measuring apparatus |
| WO2017133307A1 (en) * | 2016-02-03 | 2017-08-10 | 深圳市易特科信息技术有限公司 | High-precision, resistance-based screw measuring device |
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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: 20150311 Termination date: 20151016 |
|
| EXPY | Termination of patent right or utility model |