CN206300712U - A kind of four-point weighing electronic scale circuit - Google Patents
A kind of four-point weighing electronic scale circuit Download PDFInfo
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- CN206300712U CN206300712U CN201621464495.4U CN201621464495U CN206300712U CN 206300712 U CN206300712 U CN 206300712U CN 201621464495 U CN201621464495 U CN 201621464495U CN 206300712 U CN206300712 U CN 206300712U
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- pressure sensor
- electric bridge
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- electronic scale
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Abstract
The utility model discloses a kind of four-point weighing electronic scale circuit, pressure sensor S1 including resistance-type, pressure sensor S2, pressure sensor S3 and pressure sensor S4, the two ends of pressure sensor S1 and pressure sensor S2 are in parallel to form the first electric bridge, the two ends of pressure sensor S3 and pressure sensor S4 are in parallel to form the second electric bridge, first electric bridge and the latter termination power positive pole VDD of the second electric bridge series connection, another termination power cathode GND, two electric bridges are constituted using two resistance of resistive pressure sensor itself, the measured values addition of two electric bridges is obtained four pressure sensors entirely to export, single pressure sensor can also be measured, operating current only has a quarter of electric bridge in parallel in the prior art, greatly increase the service life of battery.
Description
Technical field
The utility model is related to a kind of weighing apparatus, particularly a kind of four-point weighing electronic scale.
Background technology
It is that a pressure sensor is respectively set at four angles of electronic scale to be weighed using the half-bridge four-point of battery, is passed through
Favour stone balanced bridge method calculated weight.Current four-point weighing electronic scale circuit is as shown in figure 1, its four pressure sensors
It is connected in parallel between the positive pole of power supply and negative pole, operating current is 1=2V/R, and the maximum operating current of electronic scale is consumed in pressure
On sensor, this causes, and the operating current of system is big, and the service life of battery is shorter.
The content of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of operating current small four-point weighing electronic scale
Circuit.
The utility model solves the technical scheme that its technical problem used：
A kind of four-point weighing electronic scale circuit, including the pressure sensor S1 of resistance-type, pressure sensor S2, pressure are passed
The two ends of sensor S3 and pressure sensor S4, the pressure sensor S1 and pressure sensor S2 are in parallel to form the first electric bridge, institute
Second electric bridge of two ends formation in parallel of pressure sensor S3 and pressure sensor S4 is stated, first electric bridge and the second electric bridge are connected
Latter termination power positive pole VDD, another termination power cathode GND.
The beneficial effects of the utility model are：The utility model utilizes two resistance structures of resistive pressure sensor itself
Into two electric bridges, the measured values addition of two electric bridges is obtained four pressure sensors and is entirely exported, it is also possible to single pressure
Sensor is measured, and operating current only has a quarter of electric bridge in parallel in the prior art, makes the service life of battery significantly
Increase.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is four-point weighing electronic scale circuit in the prior art；
Fig. 2 is the utility model four-point weighing electronic scale circuit.
Specific embodiment
Pressure sensor S1, the pressure sensor of reference picture 2, a kind of four-point weighing electronic scale circuit, including resistance-type
The two ends of S2, pressure sensor S3 and pressure sensor S4, the pressure sensor S1 and pressure sensor S2 are in parallel to form the
One electric bridge, the two ends of the pressure sensor S3 and pressure sensor S4 are in parallel to form the second electric bridge, first electric bridge and the
The series connection of two electric bridges latter termination power positive pole VDD, another termination power cathode GND.
When the increment of one of resistance in same pressure sensor is Δ R, then the increment of another resistance is-Δ R,
Namely single pressure sensing resistance value is certain, and the transformation of weight does not interfere with voltage and current, using resistance-type pressure
Two resistance of force snesor itself constitute two electric bridges, and it is whole that the measured values addition of two electric bridges is obtained four pressure sensors
Individual output, it is also possible to measured to single pressure sensor, operating current is I=V/2R, only electric bridge in parallel in the prior art
A quarter, greatly increase the service life of battery.
Claims (1)
1. a kind of pressure sensor S1 of four-point weighing electronic scale circuit, including resistance-type, pressure sensor S2, pressure sensing
Device S3 and pressure sensor S4, it is characterised in that the two ends of the pressure sensor S1 and pressure sensor S2 are in parallel to form first
Electric bridge, the two ends of the pressure sensor S3 and pressure sensor S4 are in parallel to form the second electric bridge, first electric bridge and second
Electric bridge series connection latter termination power positive pole VDD, another termination power cathode GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621464495.4U CN206300712U (en) | 2016-12-29 | 2016-12-29 | A kind of four-point weighing electronic scale circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621464495.4U CN206300712U (en) | 2016-12-29 | 2016-12-29 | A kind of four-point weighing electronic scale circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206300712U true CN206300712U (en) | 2017-07-04 |
Family
ID=59204671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621464495.4U Active CN206300712U (en) | 2016-12-29 | 2016-12-29 | A kind of four-point weighing electronic scale circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206300712U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084870A (en) * | 2018-09-19 | 2018-12-25 | 深圳市乐福衡器有限公司 | Four foot scales of one kind, its pressure sensitive circuit and weighing method |
| WO2020103535A1 (en) * | 2018-11-20 | 2020-05-28 | 芯海科技（深圳）股份有限公司 | Weight scale capable of measuring values of weights at four corners, measurement apparatus and measurement method |
-
2016
- 2016-12-29 CN CN201621464495.4U patent/CN206300712U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084870A (en) * | 2018-09-19 | 2018-12-25 | 深圳市乐福衡器有限公司 | Four foot scales of one kind, its pressure sensitive circuit and weighing method |
| CN109084870B (en) * | 2018-09-19 | 2024-05-10 | 深圳市乐福衡器有限公司 | Four-foot scale, pressure sensing circuit and weighing method thereof |
| WO2020103535A1 (en) * | 2018-11-20 | 2020-05-28 | 芯海科技（深圳）股份有限公司 | Weight scale capable of measuring values of weights at four corners, measurement apparatus and measurement method |
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