CN203928926U - A kind of self-charging Electronic tape measure - Google Patents
A kind of self-charging Electronic tape measure Download PDFInfo
- Publication number
- CN203928926U CN203928926U CN201420354091.4U CN201420354091U CN203928926U CN 203928926 U CN203928926 U CN 203928926U CN 201420354091 U CN201420354091 U CN 201420354091U CN 203928926 U CN203928926 U CN 203928926U
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- Prior art keywords
- circuit
- tape measure
- charging
- electrically connected
- self
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- 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model proposes a kind of self-charging Electronic tape measure, solve standing crop hornwork measuring accuracy poor, be subject to Human disturbance and introduce the problem of error, and can make full use of the flexible energy producing of chi band battery is charged, save the energy.A kind of self-charging Electronic tape measure, comprises that tape measure body, described tape measure body comprise shell and be located at rotating shaft, disc spring, reel and the chi band in shell, also comprise metering circuit system and charging system.
Description
Technical field
The utility model relates to a kind of survey instrument, particularly a kind of self-charging Electronic tape measure.
Background technology
Traditional tape measure does not have display device, only determine length scale with the scale on operator's the direct sight gauge band of eyes, in the time measuring, because of difference or the visual angle difference of survey crew, make measuring error larger, precision is relatively low, and is subject to the correct degree impact of gauger's skill level and operation, easily cause artificial deviation, the occasion of measuring accuracy being had relatively high expectations at some cannot provide relatively accurate measurement data.
Utility model content
The utility model proposes a kind of self-charging Electronic tape measure, solve standing crop hornwork measuring accuracy poor, be subject to Human disturbance and introduce the problem of error, and can make full use of the flexible energy producing of chi band battery is charged, save the energy.
The technical solution of the utility model is achieved in that
A kind of self-charging Electronic tape measure, comprises that tape measure body, described tape measure body comprise shell and be located at rotating shaft, disc spring, reel and the chi band in shell, also comprises metering circuit system and charging system,
Described metering circuit system comprises rotational potentiometer, A/D convertor circuit, computing circuit, display device and supply unit; The knob of rotational potentiometer is fixedly connected with described rotating shaft, described rotational potentiometer is electrically connected with the input end of described A/D convertor circuit, 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;
Described charging system comprises generator, rectification circuit, mu balanced circuit and charging circuit, described supply unit comprises rechargeable battery, described generator is fixedly installed in described shell, the rotor of generator is fixedly connected with described rotating shaft, the input end of described rectification circuit is electrically connected with the power output end of described generator, the input end of described mu balanced circuit is electrically connected with the output terminal of described rectification circuit, the input end of described charging circuit is electrically connected with the output terminal of described mu balanced circuit, and the output terminal of described charging circuit is electrically connected with described rechargeable battery.
Further, described chi band is cloth measure band.
Further, described chi band is provided with the scale taking millimeter as unit.
Further, described display device comprises display driver circuit and display screen, and described display screen is LED display.
Further, described shell is provided with transparent display window, and described LED display is installed in this display window.
Known by above description, the utility model compared with prior art, the utlity model has following advantage:
1, the utility model rotates by chi band driven rotary potentiometer, the resistance value that rotational potentiometer is changed converts digital signal to by A/D convertor circuit, will be by digital signal be carried out to computing, the length value that converts tape measure output to shows to have intuitively, measure the advantages such as accurate by display device.
2, the utility model utilizes chi band to stretch out and shrink the energy producing, utilize rotating shaft to drive engine rotor to rotate, realize generating, and power supply is stablized and charged the battery by rectification circuit, mu balanced circuit, charging circuit, greatly extend the service time of power supply in battery, reduce battery altering, save the energy.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structure cross-sectional schematic of the present utility model;
Fig. 2 is the schematic block circuit diagram of metering circuit system and charging system.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
See figures.1.and.2, a kind of self-charging Electronic tape measure, comprises that tape measure body 1, described tape measure body 1 comprise shell 11 and be located at rotating shaft 12, disc spring 13, reel 14 and the chi band 15 in shell, also comprise metering circuit system 2 and charging system 3.
Described metering circuit system 2 comprises rotational potentiometer 21, A/D convertor circuit 22, computing circuit 23, display device 24 and supply unit 25; The knob of described rotational potentiometer 21 is fixedly connected with described rotating shaft 12, described rotational potentiometer 21 is electrically connected with the input end of described A/D convertor circuit 22, the output terminal of described A/D convertor circuit 22 is electrically connected with the input end of described computing circuit 23, and the output terminal of described computing circuit 23 is electrically connected with described display device 24.
Described charging system 3 comprises generator 31, rectification circuit 32, mu balanced circuit 33 and charging circuit 34, described supply unit 25 comprises rechargeable battery 35, described generator 31 is fixedly installed in described shell 11, the rotor of generator 31 is fixedly connected with described rotating shaft 12, the input end of described rectification circuit 32 is electrically connected with the power output end of described generator 31, the input end of described mu balanced circuit 33 is electrically connected with the output terminal of described rectification circuit 32, the input end of described charging circuit 34 is electrically connected with the output terminal of described mu balanced circuit 33, the output terminal of described charging circuit 34 is electrically connected with described rechargeable battery 35.
Described chi band 15 is cloth measure band.Described chi band 15 is provided with the scale taking millimeter as unit.Described display device 24 comprises display driver circuit and display screen, and described display screen is LED display.Described shell is provided with transparent display window, and described LED display is installed in this display window.Circuit theory of the present utility model is simple, and A/D convertor circuit, computing circuit, display driver circuit, mu balanced circuit, charging circuit, rectification circuit etc. all can adopt existing common circuit, has the advantages such as cost is low, circuit is stable.
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 of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a self-charging Electronic tape measure, comprises that tape measure body, described tape measure body comprise shell and be located at rotating shaft, disc spring, reel and the chi band in shell, is characterized in that: also comprise metering circuit system and charging system,
Described metering circuit system comprises rotational potentiometer, A/D convertor circuit, computing circuit, display device and supply unit; The knob of rotational potentiometer is fixedly connected with described rotating shaft, described rotational potentiometer is electrically connected with the input end of described A/D convertor circuit, 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;
Described charging system comprises generator, rectification circuit, mu balanced circuit and charging circuit, described supply unit comprises rechargeable battery, described generator is fixedly installed in described shell, the rotor of generator is fixedly connected with described rotating shaft, the input end of described rectification circuit is electrically connected with the power output end of described generator, the input end of described mu balanced circuit is electrically connected with the output terminal of described rectification circuit, the input end of described charging circuit is electrically connected with the output terminal of described mu balanced circuit, and the output terminal of described charging circuit is electrically connected with described rechargeable battery.
2. a kind of self-charging Electronic tape measure as claimed in claim 1, is characterized in that: described chi band is cloth measure band.
3. a kind of self-charging Electronic tape measure as claimed in claim 1, is characterized in that: described chi band is provided with the scale taking millimeter as unit.
4. a kind of self-charging Electronic tape measure as claimed in claim 1, is characterized in that: described display device comprises display driver circuit and display screen, and described display screen is LED display.
5. a kind of self-charging Electronic tape measure as claimed in claim 4, is characterized in that: described shell is provided with transparent display window, and described LED display is installed in this display window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420354091.4U CN203928926U (en) | 2014-06-27 | 2014-06-27 | A kind of self-charging Electronic tape measure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420354091.4U CN203928926U (en) | 2014-06-27 | 2014-06-27 | A kind of self-charging Electronic tape measure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203928926U true CN203928926U (en) | 2014-11-05 |
Family
ID=51824728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420354091.4U Expired - Fee Related CN203928926U (en) | 2014-06-27 | 2014-06-27 | A kind of self-charging Electronic tape measure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203928926U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9874428B1 (en) | 2016-10-05 | 2018-01-23 | Milwaukee Electric Tool Corporation | Tape measure with compact retraction system |
| US10054415B2 (en) | 2015-09-30 | 2018-08-21 | Milwaukee Electric Tool Corporation | Tape measure |
| US10836603B2 (en) | 2017-03-22 | 2020-11-17 | Milwaukee Electric Tool Corporation | Tape measure with epicyclic gear drive for tape retraction |
| US11846504B2 (en) | 2016-10-05 | 2023-12-19 | Milwaukee Electric Tool Corporation | Tape measure with compact retraction system |
| US12017885B2 (en) | 2022-07-25 | 2024-06-25 | Milwaukee Electric Tool Corporation | Tape measure with epicyclic gear drive for tape retraction |
-
2014
- 2014-06-27 CN CN201420354091.4U patent/CN203928926U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10054415B2 (en) | 2015-09-30 | 2018-08-21 | Milwaukee Electric Tool Corporation | Tape measure |
| US10767970B2 (en) | 2015-09-30 | 2020-09-08 | Milwaukee Electric Tool Corporation | Tape measure |
| US9874428B1 (en) | 2016-10-05 | 2018-01-23 | Milwaukee Electric Tool Corporation | Tape measure with compact retraction system |
| US10132605B2 (en) | 2016-10-05 | 2018-11-20 | Milwaukee Electric Tool Corporation | Tape measure with compact retraction system |
| US10458771B2 (en) | 2016-10-05 | 2019-10-29 | Milwaukee Electric Tool Corporation | Tape measure with compact retraction system |
| US10876825B2 (en) | 2016-10-05 | 2020-12-29 | Milwaukee Electric Tool Corporation | Tape measure with compact retraction system |
| US11466970B2 (en) | 2016-10-05 | 2022-10-11 | Milwaukee Electric Tool Corporation | Tape measure with compact retraction system |
| US11846504B2 (en) | 2016-10-05 | 2023-12-19 | Milwaukee Electric Tool Corporation | Tape measure with compact retraction system |
| US10836603B2 (en) | 2017-03-22 | 2020-11-17 | Milwaukee Electric Tool Corporation | Tape measure with epicyclic gear drive for tape retraction |
| US11427434B2 (en) | 2017-03-22 | 2022-08-30 | Milwaukee Electric Tool Corporation | Tape measure with epicyclic gear drive for tape retraction |
| US12017885B2 (en) | 2022-07-25 | 2024-06-25 | Milwaukee Electric Tool Corporation | Tape measure with epicyclic gear drive for tape retraction |
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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: 20141105 Termination date: 20150627 |
|
| EXPY | Termination of patent right or utility model |