CN2607561Y - Interface plate for simulated sensor - Google Patents
Interface plate for simulated sensor Download PDFInfo
- Publication number
- CN2607561Y CN2607561Y CN 03220657 CN03220657U CN2607561Y CN 2607561 Y CN2607561 Y CN 2607561Y CN 03220657 CN03220657 CN 03220657 CN 03220657 U CN03220657 U CN 03220657U CN 2607561 Y CN2607561 Y CN 2607561Y
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- CN
- China
- Prior art keywords
- eeprom
- weighing apparatus
- control unit
- meter
- mcu
- 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
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Abstract
The utility model relates to an analog transducer interface plate and consists of a front-built operational amplifier (2), an analogue filter (3), an A/D conversion module (4), a micro-program control unit (MCU)(5) and an interface chip (8). The micro-program control unit (MCU) (5) is connected with an electrically-erasable programmable ROM (EEPROM) (7) and the another electrically-erasable programmable ROM (EEPROM) (6). The utility model is designed with double-EEPROMs. One EEPROM is used to store the current parameters of the calibrated weighing apparatus and the other EEPROM is used to store the characteristic parameters of the analog portion of the meter. After the meter of a weighing apparatus is changed, the current parameters of the calibrated weighing apparatus are input into the meter only and the meter automatically corrects the parameters of the weighing apparatus according to the characteristic parameters stored in the other EEPROM in enabling that the weighing apparatus is kept in an original precision without any recalibration of the weighing apparatus. Especially the troubles of required sufficient poises and auxiliary tools are avoided so that the time is saved, the manpower is saved and the users are convenient to use the weighing apparatus.
Description
Technical field
The utility model belongs to the weighing instrument field, particularly relates to the analog sensor interface board of using on a kind of display instrument of weighing.
Background technology
The analog sensor interface board of usefulness in the market adopts single EEPROM (electricity erasable memorizer) design, only preserves the parameter behind the scale of current school among the EEPROM.Scale is after changing instrument, even the parameter among original EEPROM is forwarded in the new instrument, but the analog circuit parameters of each instrument can not be in full accord, and then error is too big to cause system, make scale can not reach desired accuracy, unique solution is that scale is demarcated again.But need enough counterweights and aid for the large-scale weighing machine calibration process, time-consuming taking a lot of work brought very big inconvenience to the user.
Summary of the invention
The purpose of this utility model provides and a kind ofly saves time, the analog sensor interface board of saving of labor, non-calibrating.
The technical scheme that realizes above-mentioned purpose is: a kind of analog sensor interface board, comprise the prefix operation amplifier, the analog filtering unit, the A/D modular converter, microprogram control unit MCU, the output terminal of prefix operation amplifier is connected with the input end of analog filtering unit, the output terminal of analog filtering unit is connected with the input end of A/D converter, the output terminal of A/D converter is connected with microprogram control unit MCU, be connected with electricity erasable memorizer EEPROM on the microprogram control unit MCU, the output terminal of microprogram control unit MCU is connected with interface chip, also is connected with another electricity erasable memorizer EEPROM on the microprogram control unit MCU.
After adopting technique scheme, adopt two EEPROM designs on the interface board, preserve the parameter behind the current proof among EEPROM.Simulate characterisitic parameter partly and preserve instrument among another piece EEPROM.Scale only needs current school scale parameter input instrument after changing instrument, and instrument is revised school scale parameter according to the characterisitic parameter of preserving among another piece EEPROM automatically.Make scale need not to proofread and correct again and keep original accuracy.Thereby removed calibrating procedure from, and particularly removed the trouble that needs enough counterweights and aid in the large-scale weighing machine calibration process from, save time, the saving of labor, brought very big convenience to the user.
Description of drawings
Fig. 1 is a frame principle figure of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As Fig. 1, shown in 2, a kind of analog sensor interface board, comprise prefix operation amplifier 2, analog filtering unit 3, A/D modular converter 4, microprogram control unit MCU5, the output terminal of prefix operation amplifier 2 is connected with the input end of analog filtering unit 3, the output terminal of analog filtering unit 3 is connected with the input end of A/D converter 4, the output terminal of A/D converter 4 is connected with microprogram control unit MCU5, be connected with electricity erasable memorizer EEPROM7 on the microprogram control unit MCU5, the output terminal of microprogram control unit 5 is connected with interface chip 8, also is connected with another electricity erasable memorizer EEPROM6 on the microprogram control unit MCU5.Prefix operation amplifier input terminal in the analog sensor interface board is connected with Wheatstone bridge 1 as analog sensor by lead, and the interface chip 8 in the analog sensor interface board is connected with host CPU by the PC104 bus.
Principle of work of the present utility model is as follows:
Analog interface plate prefix operation amplifier 2, filter unit 3, A/D modular converter 4, MCU, two EEPROM and interface chip 8 etc. are partly formed as can be seen from accompanying drawing 1,2.In the FLASH of software solidification in MCU, the characterisitic parameter of parameter behind the scale of school and simulation part is kept among the EEPROM.When the analog interface plate carries out In-Plant Test, the characteristic of intending part according to this template die is write relevant parameter among the EEPROM and is preserved: when the instrument on-site proving, write among another piece EEPROM by the parameter of MCU on the instrument main control part control analog interface plate after current school scale and to preserve.Sensor signal is through 2 amplifications of prefix operation amplifier, then through 3 filtering of analog filtering unit, be converted to digital signal by A/D modular converter 4 again and give MCU, compare processing with the parameter behind the school scale among the EEPROM and the characterisitic parameter of simulation part, obtain actual weight, give the instrument main control part through the PC104 bus by interface chip 8.
Claims (1)
1, a kind of analog sensor interface board, comprise prefix operation amplifier (2), analog filtering unit (3), A/D modular converter (4), microprogram control unit MCU (5) and interface chip (8), the output terminal of prefix operation amplifier (2) is connected with the input end of analog filtering unit (3), the output terminal of analog filtering unit (3) is connected with the input end of A/D converter (4), the output terminal of A/D converter (4) is connected with microprogram control unit MCU (5), be connected with electricity erasable memorizer EEPROM (7) on the microprogram control unit MCU (5), the output terminal of microprogram control unit MCU (5) is connected with interface chip (8), it is characterized in that: also be connected with another electricity erasable memorizer EEPROM (6) on the microprogram control unit MCU (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03220657 CN2607561Y (en) | 2003-03-26 | 2003-03-26 | Interface plate for simulated sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03220657 CN2607561Y (en) | 2003-03-26 | 2003-03-26 | Interface plate for simulated sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2607561Y true CN2607561Y (en) | 2004-03-24 |
Family
ID=34162019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03220657 Expired - Lifetime CN2607561Y (en) | 2003-03-26 | 2003-03-26 | Interface plate for simulated sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2607561Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778243A (en) * | 2011-05-09 | 2012-11-14 | 霍尼韦尔国际公司 | Modular sensor assembly including removable sensing module |
| CN102798454A (en) * | 2012-08-14 | 2012-11-28 | 昆山大百科实验室设备工程有限公司 | Miniature electronic balance |
| CN105203193A (en) * | 2015-08-18 | 2015-12-30 | 梅特勒-托利多(常州)精密仪器有限公司 | Weighing method and weighing system |
| CN107467815A (en) * | 2017-08-30 | 2017-12-15 | 清华大学深圳研究生院 | A kind of bracelet of detectable sensing data and wearable property sensor detection platform |
| CN109961554A (en) * | 2017-12-22 | 2019-07-02 | Ci技术传感器公司 | The method of system and the camera for replacing this system with processing unit and the camera being attached to |
| CN114646375A (en) * | 2021-06-28 | 2022-06-21 | 深圳市飞亚衡器有限公司 | Calibration-free system and method for arbitrarily matching and combining weighing platform and electronic weighing instrument |
-
2003
- 2003-03-26 CN CN 03220657 patent/CN2607561Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778243A (en) * | 2011-05-09 | 2012-11-14 | 霍尼韦尔国际公司 | Modular sensor assembly including removable sensing module |
| CN102798454A (en) * | 2012-08-14 | 2012-11-28 | 昆山大百科实验室设备工程有限公司 | Miniature electronic balance |
| CN105203193A (en) * | 2015-08-18 | 2015-12-30 | 梅特勒-托利多(常州)精密仪器有限公司 | Weighing method and weighing system |
| CN105203193B (en) * | 2015-08-18 | 2017-11-17 | 梅特勒-托利多(常州)精密仪器有限公司 | A kind of Weighing method and weighing system |
| CN107467815A (en) * | 2017-08-30 | 2017-12-15 | 清华大学深圳研究生院 | A kind of bracelet of detectable sensing data and wearable property sensor detection platform |
| CN109961554A (en) * | 2017-12-22 | 2019-07-02 | Ci技术传感器公司 | The method of system and the camera for replacing this system with processing unit and the camera being attached to |
| CN114646375A (en) * | 2021-06-28 | 2022-06-21 | 深圳市飞亚衡器有限公司 | Calibration-free system and method for arbitrarily matching and combining weighing platform and electronic weighing instrument |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130326 Granted publication date: 20040324 |