CN1133971A - Weight and disk type electronic balance - Google Patents
Weight and disk type electronic balance Download PDFInfo
- Publication number
- CN1133971A CN1133971A CN 95102361 CN95102361A CN1133971A CN 1133971 A CN1133971 A CN 1133971A CN 95102361 CN95102361 CN 95102361 CN 95102361 A CN95102361 A CN 95102361A CN 1133971 A CN1133971 A CN 1133971A
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- CN
- China
- Prior art keywords
- weight
- type electronic
- disk type
- electronic balance
- disc
- 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.)
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Abstract
An electronic scale of hand-held type or pan type uses mechanical sensor with 5 g of precision and 20 Kg of range, 3-V button battery supplying 0.3 mA of working current and special CMOS IC for direct price calculation, and features low cost, high precision and reliability and low power consumption.
Description
The invention belongs to the civil electronic scale, this electronic scales is to improve realization on the basis of original spring balance.
At present used spring balance all adopts the pointer indication, though this structure is simple, reading accuracy is limited, and to be human eye be restricted the resolution of scale its reason.The spring balance that has for improve precision have to index dial do very big so that improve its precision, this certainly will increase volume, improves weight, and carries inconvenience.And common electronic scales is owing to adopt more expensive pressure transducer, the signal of pressure transducer is changed through A/D, the precision of this electronic scales is high more, require the precision of pressure transducer and A/D converter also high more, certainly will cause price very high like this, and power consumption is also big, generally adopts Alternating Current Power Supply, is unfavorable for mobile people's use.The patent No. is that 85205781 utility model patent discloses a kind of photo-electric mechanical electronic scale in addition, this electronic scales changes the scale on the index dial of original pointer platform balance into open-work, at the position of two pointer inboards, a miniature bulb and a light activated element are installed respectively again with respect to the scale mark open-work.The pointer beat moves and skims over the line hole of printing opacity one by one, and the light one disconnected one of miniature bulb impinges upon on the light activated element continuously, makes photoelectric switching circuit send photoelectric pulse signal one by one, send counter to realize metering.Because this electronic scales can't discern the positive and negative motion of rotating speed, thereby can't provide the correct weight of article, because pointer platform balance is when the scale article, after weighing article was put, pointer will be with near size different swing maximum deflection of weight.After article took off, pointer was with opposite direction motion, the same accumulated counts of the photosignal of Chan Shenging like this.
The present invention designs at above deficiency, and it is a kind of simple in structure that order of the present invention ground just provides, the electronic scales that operation is reliable, resolution is high, low in energy consumption, have the valuation function.
Design proposal of the present invention is, designed a kind of coding rotary disk, this rotating disk is punching according to certain rules or a plated film on a disk, and then by a pair of infrared emission receiving tube cooperation, signal on the receiving tube is handled by decoding scheme, just can be provided rotating disk forward or reverse angular displacement signal respectively.This code-wheel is connected on the needle pivot or gear mechanism axle of spring balance, when the scale article, code-disc rotates synchronously with axle, and two receiving tubes just can produce and the original identical or higher signal of pointer resolution, and its signal just can realized metering by processing of circuit with the counter coupling.The present invention has not only solved the rotating Motion Recognition problem of rotating disk, and adopts the infrared emission receiving tube in the photoelectricity design, also can make power valve be in pulsed mode, increases all right range extension of gear in addition, improves resolution, reduces power consumption.
The present invention adopts cmos device, can adopt 3 volts of button cell work, and electric current has only about 0.2mA, and the present invention also can use sound circuit, realizes voice quotation newspaper amount function, and resolution can reach 5g.
Below in conjunction with accompanying drawing the present invention is done further to specify, in the accompanying drawings: 1. needle pivot or gear mechanism axle, 2. coding rotary disk, 3. infrared transmitting tube 1,4. infrared transmitting tube 2,5. photoelectric receiving tube 1,6. photoelectric receiving tube 2,7. decoding scheme, 8. coupled circuit, 9. up-down counter, 10. counter.
Code-disc is connected on the gear mechanism axle, rotates synchronously with axle.When electronic scales scale article, code-disc rotates, photoelectric receiving tube 1, the signal of photoelectric receiving tube 2 is handled through decoding scheme, will produce the forward or reverse angular displacement pulse signal of code-disc, this signal is delivered to up-down counter counting, demonstrates the weight of article on will the display screen at counter being coupled by circuit kit and counter.
The size of code-disc resolution angle displacement is the minimum resolution of electronic scales, improves the resolution angle displacement, just can improve the precision of electronic scales, original rack and pinion no-load voltage ratio be increased not only can improve precision, and can increase range, as long as adjust the spring parameter, calibration gets final product again.
Claims (4)
1. Weight and disk type electronic balance of forming by spring, gear mechanism, shell, electronic circuit etc., it is characterized in that: it is made up of code-disc, infrared emission receiving tube, decoding scheme, counter, adopt coded system, the angular displacement of identification code-disc forward or reverse, converting mechanical motion to electric signal measures, code-disc is installed on the axle of gear mechanism, rotates synchronously with axle.
2. its feature of Weight and disk type electronic balance according to claim 1 also is: code-disc is punching according to certain rules or a plated film on a disk, cooperates the infrared emission receiving tube to realize coding and detect again.
3. its feature of Weight and disk type electronic balance according to claim 1 also is: its infrared transmitting tube can adopt pulsed mode.
4. Weight and disk type electronic balance according to claim 1, its feature also is: can add sound circuit in its circuit and realize voice reporting amount, quotation function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95102361 CN1133971A (en) | 1995-03-20 | 1995-03-20 | Weight and disk type electronic balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95102361 CN1133971A (en) | 1995-03-20 | 1995-03-20 | Weight and disk type electronic balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1133971A true CN1133971A (en) | 1996-10-23 |
Family
ID=5074291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95102361 Pending CN1133971A (en) | 1995-03-20 | 1995-03-20 | Weight and disk type electronic balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1133971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678438A (en) * | 2020-06-18 | 2020-09-18 | 广东韶钢松山股份有限公司 | Scale body displacement early warning method and system |
| US11718436B2 (en) | 2019-11-13 | 2023-08-08 | Carol Diane Casey | Product and method for adhering indicia to a flexible substrate |
-
1995
- 1995-03-20 CN CN 95102361 patent/CN1133971A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11718436B2 (en) | 2019-11-13 | 2023-08-08 | Carol Diane Casey | Product and method for adhering indicia to a flexible substrate |
| CN111678438A (en) * | 2020-06-18 | 2020-09-18 | 广东韶钢松山股份有限公司 | Scale body displacement early warning method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |