CN203785766U - Resistance strain type vehicle-mounted weighing system - Google Patents
Resistance strain type vehicle-mounted weighing system Download PDFInfo
- Publication number
- CN203785766U CN203785766U CN201320858243.XU CN201320858243U CN203785766U CN 203785766 U CN203785766 U CN 203785766U CN 201320858243 U CN201320858243 U CN 201320858243U CN 203785766 U CN203785766 U CN 203785766U
- Authority
- CN
- China
- Prior art keywords
- data acquisition
- acquisition module
- resistance
- strain type
- type vehicle
- 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 - Lifetime
Links
- 238000005303 weighing Methods 0.000 title claims abstract description 26
- 230000008054 signal transmission Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 description 5
- 239000011888 foil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 102100028175 Abasic site processing protein HMCES Human genes 0.000 description 1
- 101001006387 Homo sapiens Abasic site processing protein HMCES Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The utility model discloses a resistance strain type vehicle-mounted weighing system comprising a data acquisition module and a weighting sensor module; the data acquisition module uses a 12/24V vehicle power supply for power supply, and can be simultaneously connected with at most four paths of weighing sensors; the weighing sensor employs the resistance strain type, and an electric signal is sent to the data acquisition module after weighing; measuring value is accurate and hard to be affected by external environment factors, and safety is high.
Description
Technical field
The utility model relates to a kind of resistance-strain type vehicle-mounted weighing system, relates to vehicle-mounted weighing technology field.
Background technology
Domestic similar LOAD CELLS is divided into eight classes such as photo-electric, fluid pressure type, electromagnetic type, condenser type, magnetic pole deformation type, oscillatory type, gyro ceremony, resistance-strain type by conversion method at present, uses the widest with resistance-strain type.Resistance-strain type is the principle work that while utilizing resistance strain gage distortion, its resistance also changes thereupon.Mainly formed by flexible member, resistance strain gage, metering circuit and transmission cable four parts.Resistance strain gage is attached on flexible member, and when flexible member stress deformation, the foil gauge on it is out of shape thereupon, and causes resistance to change.Metering circuit is measured the variation of foil gauge resistance and is transformed to the electric signal output being in proportion with external force.Electric signal demonstrates the quality of measured object after treatment in digital form.Resistance strain weighing transducer is based on such principle: flexible member, sensitive beam produces elastic deformation under external force, make the resistance strain gage that sticks on its surface also in company with producing distortion, after resistance strain gage distortion, its resistance will change, through corresponding metering circuit, this resistance variations is converted to electric signal again, thereby has completed the process that external force is transformed to electric signal.But prior art exists measurement, numerical value is inaccurate, is subject to the impact of external environment factor, the situations such as poor stability.
Utility model content
Utility model object: for problems of the prior art and deficiency, the utility model provides a kind of resistance-strain type weighing sensing system, provides simultaneously and can connect multichannel LOAD CELLS simultaneously, improves stability and the numerical value degree of accuracy of sensor.
Technical scheme: a kind of resistance-strain type vehicle-mounted weighing system, comprises data acquisition module and Weighing cell module; Described data acquisition module comprises micro-deformation load transducer, MCU and display screen; Described data acquisition module adopts 12/24V car power source to power; Described LOAD CELLS adopts resistance-strain type, after weighing by electric signal transmission to data acquisition module; Described data acquisition module can connect maximum four tunnel LOAD CELLS simultaneously.
Described data acquisition module You Si road analog quantity interface, can sample to other sensor signal.
Described data acquisition module is up to 2 RS-232 and 2 RS-485 interfaces.
The hardware interface of described data acquisition module is as shown in the table:
Power supply (PWR)
| Terminal number | Title | Explanation |
| 1 | V+ | Power supply input anodal (DC12/24V) |
| 2 | V- | Power supply input negative pole |
232 serial ports (P5, P6)
| Terminal number | Title | Explanation |
| 1 | RXD | Serial data receives, and meets the TXD of computing machine |
| 2 | TXD | Serial data sends, and meets the RXD of computing machine |
| 3 | GND | Publicly |
485 serial ports (P7, P8)
| Terminal number | Title | Explanation |
| 1 | 485+/A | 485 bus A |
| 2 | 485-/B | 485 bus B |
LOAD CELLS interface (P2)
| Terminal number | Title | Explanation |
| 1 | V1 | First sensor power supply, 5V |
| 2 | S1 | First sensor signal input |
| 3 | G1 | First sensor ground wire |
| 4 | V2 | Second sensor power supply, 5V |
| 5 | S2 | Second sensor signal input |
| 6 | G2 | Second sensor ground wire |
| 7 | V3 | The 3rd sensor power supply, 5V |
| 8 | S3 | The 3rd sensor signal input |
| 9 | G3 | The 3rd sensor ground wire |
| 10 | V4 | The 4th sensor power supply, 5V |
| 11 | S4 | The 4th sensor signal input |
| 12 | G4 | The 4th sensor ground wire |
Analog quantity interface (P4)
| Terminal number | Title | Explanation |
| 1 | Al1 | Input 1 |
| 2 | Al2 | Input 2 |
| 3 | Al3 | Input 3 |
| 4 | Al4 | Input 4 |
Beneficial effect: the resistance-strain type vehicle-mounted weighing system that the utility model provides, adopt 12/24V car power source to power, while normally work, power is not more than 500mW, and minimum power consumption only has 20mW, can directly be connected on vehicle-used battery jar, not worry exhausting storage battery electric weight after stagnation of movement; Connect multiple LOAD CELLS simultaneously and carry out data sampling, measure numerical value more accurate; In addition, adopt resistance strain weighing transducer to measure deformation quantity and carry out check weighing amount, but not direct check weighing amount, safe and reliable, cost performance is high.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of the data acquisition module of the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand following embodiment and only be not used in restriction scope of the present utility model for the utility model is described, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present utility model.
As shown in Figure 1, resistance-strain type vehicle-mounted weighing system, formed by data acquisition module 1 and Weighing cell module 2, Weighing cell module 2 is provided with gravity sensor 3 and gravity sensor 4, gravity sensor 3 is connected with V1, S1 and G1 port on data acquisition module, and gravity sensor 4 is connected with V2, S2 and G2 port on data acquisition module; Data acquisition module can connect at most 4 gravity sensors simultaneously.
As shown in Figure 2, the data acquisition module of resistance-strain type vehicle-mounted weighing system, comprises micro-deformation load transducer 5, MCU6 and display screen 7; Micro-deformation load transducer 5 is converted to magnitude of voltage by carload and sends MCU6 to, and MCU6 sample voltage value is also calculated, and is sending display screen 7 to, and display screen 7 shows user's adjustable MCU6 after weight.
Claims (3)
1. a resistance-strain type vehicle-mounted weighing system, is characterized in that: comprise data acquisition module and Weighing cell module; Described data acquisition module comprises micro-deformation load transducer, MCU and display screen; Described data acquisition module adopts 12/24V car power source to power; Described LOAD CELLS adopts resistance-strain type, after weighing by electric signal transmission to data acquisition module; Described data acquisition module can connect maximum four tunnel LOAD CELLS simultaneously.
2. resistance-strain type vehicle-mounted weighing system as claimed in claim 1, is characterized in that: described data acquisition module You Si road analog quantity interface, can sample to other sensor signal.
3. resistance-strain type vehicle-mounted weighing system as claimed in claim 1, is characterized in that: described data acquisition module is up to 2 RS-232 and 2 RS-485 interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320858243.XU CN203785766U (en) | 2013-12-24 | 2013-12-24 | Resistance strain type vehicle-mounted weighing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320858243.XU CN203785766U (en) | 2013-12-24 | 2013-12-24 | Resistance strain type vehicle-mounted weighing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203785766U true CN203785766U (en) | 2014-08-20 |
Family
ID=51321944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320858243.XU Expired - Lifetime CN203785766U (en) | 2013-12-24 | 2013-12-24 | Resistance strain type vehicle-mounted weighing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203785766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289470A (en) * | 2016-08-26 | 2017-01-04 | 中航电测仪器股份有限公司 | A kind of truck combination vehicle-mounted weighing system and Weighing method |
-
2013
- 2013-12-24 CN CN201320858243.XU patent/CN203785766U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289470A (en) * | 2016-08-26 | 2017-01-04 | 中航电测仪器股份有限公司 | A kind of truck combination vehicle-mounted weighing system and Weighing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
|
| CX01 | Expiry of patent term |