CN202938894U - Overrange protection electronic scale - Google Patents
Overrange protection electronic scale Download PDFInfo
- Publication number
- CN202938894U CN202938894U CN 201220751298 CN201220751298U CN202938894U CN 202938894 U CN202938894 U CN 202938894U CN 201220751298 CN201220751298 CN 201220751298 CN 201220751298 U CN201220751298 U CN 201220751298U CN 202938894 U CN202938894 U CN 202938894U
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- unit
- circuit
- lifter
- electric signal
- overrange protection
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- Expired - Fee Related
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Abstract
The utility model relates to an overrange protection electronic scale, including a scale pan, a weighing sensor unit, a signal acquisition and conversion unit, an MCU control unit, a display/input/alarm unit and an overrange protection unit. The weighing sensor unit is in mechanical connection with the weighing pan. The weighing sensor unit is in electric signal connection with the signal acquisition and conversion unit. The display/input/alarm unit comprises an LCD liquid crystal display circuit, a key input circuit and a sound and light alarm circuit. The MCU control unit is respectively in electric signal connection with the signal acquisition and conversion unit, the LCD liquid crystal display circuit, the key input circuit, the sound and light alarm circuit, and the overrange protection unit. The overrange protection electronic scale has a small size, is low in power consumption and direct in operation, can display the current weight and the remaining measuring weight, ensures the precision of the electronic scale, improves the accuracy of the result, and prevents the damage to the electronic scale.
Description
Technical field
The utility model relates to a kind of scale, especially relates to a kind of overrange protection electronic scales.
Background technology
Electronic scales of a great variety; be applied among every field; most of electronic scaless are all then to be presented at above display by being processed by amplifier and information conversion circuit after the pressure transducer detection signal; in operating process; treat that the quality of weighing article might surpass the dead weight of electronic scales; overweight meeting causes damage to LOAD CELLS; damaging property damage when serious; affect simultaneously the precision of electronic scales; therefore be necessary to take appropriate measures; electronic scales is protected, guaranteed precision and the accuracy of electronic scales.
The utility model content
Based on above weak point, the purpose of this utility model is to provide a kind of overrange protection electronic scales.
The technical scheme that the utility model adopts is as follows:
a kind of overrange protection electronic scales, comprise the scale pan, the LOAD CELLS unit, the signals collecting converting unit, the MCU control module, demonstration/input/alarm unit and overrange protection unit, LOAD CELLS unit and scale pan mechanical connection, the LOAD CELLS unit is connected with signals collecting converting unit electric signal, demonstration/input/alarm unit comprises the LCD liquid crystal display circuit, button inputting circuits and sound light alarming circuit, the MCU control module respectively with the signals collecting converting unit, the LCD liquid crystal display circuit, button inputting circuits, sound light alarming circuit, overrange protection unit electric signal connects.
The utility model also has following feature:
Described overrange protection unit comprises relay, relay drive circuit, lifter and lifter control driving circuit; relay drive circuit is connected with the relay electric signal; relay is controlled the driving circuit electric signal with lifter and is connected; lifter is controlled driving circuit and is connected with the lifter electric signal; when surpassing range, lifter can hold up the scale pan.
Volume of the present utility model is little, and is low in energy consumption, and operation is directly perceived, can show in real time current weight and residue measurement weight, guaranteed the precision of electronic scales, improved the accuracy of result, prevents that electronic scales from damaging.
Description of drawings
Fig. 1 is the utility model structural principle block diagram.
Embodiment
The below is described further for example according to Figure of description:
as shown in Figure 1, a kind of overrange protection electronic scales, comprise the scale pan 1, LOAD CELLS unit 2, signals collecting converting unit 3, MCU control module 4, demonstration/input/alarm unit 5 and overrange protection unit 6, LOAD CELLS unit 2 and scale pan mechanical connection 1, LOAD CELLS unit 2 is connected with signals collecting converting unit 3 electric signal, demonstration/input/alarm unit 5 comprises the LCD liquid crystal display circuit, button inputting circuits and sound light alarming circuit, MCU control module 4 respectively with signals collecting converting unit 3, the LCD liquid crystal display circuit, button inputting circuits, sound light alarming circuit, overrange protection unit 6 electric signal connect.Described overrange protection unit 6 comprises relay, relay drive circuit, lifter and lifter control driving circuit; relay drive circuit is connected with the relay electric signal; relay is controlled the driving circuit electric signal with lifter and is connected; lifter is controlled driving circuit and is connected with the lifter electric signal; when surpassing range, lifter can hold up the scale pan 1.Described signals collecting converting unit 3 comprises the collection of pressure signal, the amplification of signal, filtering and the corresponding analog to digital conversion of signal.Described MCU control module 4 comprises automatic switching range part, data storage, single-chip microcomputer and single-chip minimum system.MCU control module 4 is controlled the whole system operation, comprises weight signal collection, data processing, corresponding demonstration, the protection of excessive scale, sound and light alarm.Sound light alarming circuit comprises alarm buzzer and high-brightness LED lamp.
principle of work and process are: when when the weighing article are put in the scale pan, LOAD CELLS unit 2 detects a corresponding simulating signal, this simulating signal is amplified processing by signals collecting converting unit 3, filtering is processed, through analog to digital conversion, this analog signal conversion is become corresponding digital signal again, carry out data processing operation through MCU control module 4, judge whether that according to operation result excess claims, if be referred to as interior normal demonstration article quality in amount, if overweight, show overweight, highlighted LED flicker, hummer carries out sound and light alarm overrange protection simultaneously unit 6 actions, the scale pan 1 is held, in order to avoid LOAD CELLS unit 2 is further oppressed and cause and damage or measure inaccurate.
In addition, the utlity model has warning function, the display part also shows residue measurement maximum weight, but user's preresearch estimates article to be measured, and operation is directly perceived.Avoid the damage to electronic scales, effectively protect LOAD CELLS, guarantee the precision of electronic scales, improve the accuracy of weighing result.
Carry out sound and light alarm by hummer sounding and highlighted LED flicker when outrange, MCU controls simultaneously, and display device shows overweight, controls simultaneously the lifter action, the scale pan is supported, until artificially remove alleged article, and button is confirmed just to recover normal.The employing multiple protective has been avoided the damage to electronic scales.
The utlity model has following function:
1, the utlity model has the overrange automatic protection functions.
2, the utlity model has overweight sound and light of alarm.
3, the utlity model has the function that range is regulated automatically.
Claims (2)
1. overrange protection electronic scales, comprise the scale pan, the LOAD CELLS unit, the signals collecting converting unit, the MCU control module, demonstration/input/alarm unit and overrange protection unit, it is characterized in that: LOAD CELLS unit and scale pan mechanical connection, the LOAD CELLS unit is connected with signals collecting converting unit electric signal, demonstration/input/alarm unit comprises the LCD liquid crystal display circuit, button inputting circuits and sound light alarming circuit, the MCU control module respectively with the signals collecting converting unit, the LCD liquid crystal display circuit, button inputting circuits, sound light alarming circuit, overrange protection unit electric signal connects.
2. a kind of overrange protection electronic scales according to claim 1; it is characterized in that: described overrange protection unit comprises that relay, relay drive circuit, lifter and lifter control driving circuit; relay drive circuit is connected with the relay electric signal; relay is controlled the driving circuit electric signal with lifter and is connected; lifter is controlled driving circuit and is connected with the lifter electric signal; when surpassing range, lifter can hold up the scale pan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220751298 CN202938894U (en) | 2012-12-21 | 2012-12-21 | Overrange protection electronic scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220751298 CN202938894U (en) | 2012-12-21 | 2012-12-21 | Overrange protection electronic scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202938894U true CN202938894U (en) | 2013-05-15 |
Family
ID=48323128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220751298 Expired - Fee Related CN202938894U (en) | 2012-12-21 | 2012-12-21 | Overrange protection electronic scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202938894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017659A (en) * | 2016-01-20 | 2016-10-12 | 申俊 | Double-precision electronic scale |
| CN106871969A (en) * | 2017-04-01 | 2017-06-20 | 好得科技（深圳）有限公司 | A kind of article consumes automatic discrimination system and method |
-
2012
- 2012-12-21 CN CN 201220751298 patent/CN202938894U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017659A (en) * | 2016-01-20 | 2016-10-12 | 申俊 | Double-precision electronic scale |
| CN106871969A (en) * | 2017-04-01 | 2017-06-20 | 好得科技（深圳）有限公司 | A kind of article consumes automatic discrimination system and method |
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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: 20130515 Termination date: 20131221 |