CN105737962A - Digital module for electronic weighing device - Google Patents
Digital module for electronic weighing device Download PDFInfo
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- CN105737962A CN105737962A CN201410752609.4A CN201410752609A CN105737962A CN 105737962 A CN105737962 A CN 105737962A CN 201410752609 A CN201410752609 A CN 201410752609A CN 105737962 A CN105737962 A CN 105737962A
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Abstract
The invention, which belongs to the technical field of the electronic module design, discloses a digital module for an electronic weighing device. The digital module is composed of a signal amplifier, an analog-to-digital converter, a microprocessor, a memory, a 485 communication interface. An analog signal is inputted into the signal amplifier; the analog-to-digital converter converts the analog signal into a digital signal; the microprocessor converts the signal and then provides the converted signal to a single-chip microcomputer directly; the single-chip microcomputer carries out storage and processing; after data processing by the single-chip microcomputer, the signal is transmitted to the 485 chip directly; and then the 485 chip transmits the signal to an instrument. According to the digital module, full-automatic compensation, low power consumption, and high anti-interference capability are realized; the module can work at high speed; the memory chip is saved; and the module size is reduced. The digital module can work in an environment with a temperature from minus 40 DEG C to 105 DEG C; elements on the module can be protected; the PCB space is saved; data loss can be prevented after power failure; signal outputting becomes stable and reliable; and the transmission distance is long.
Description
Technical field
The present invention relates to electronic module design field, particularly relate to the digital module of a kind of electronic weighing device.
Background technology
Traditional electronic weighing device is many with analog signal detection, simulated reflected signal goes out information parameter and shows as continuous print signal in given range, or in one section of continuous print interval, the characteristic quantity of its representative information can show as the signal of any number, capacity of resisting disturbance is weak, automatic compensation ability is poor, data are easily lost, stable output signal is poor, particularly long-distance transmissions is more unstable, therefore design one can realize full-automatic compensation, low-power consumption, capacity of resisting disturbance is strong, energy high-speed cruising, save storage chip, reduce module volume, save the space of PCB, after power-off, data are not lost, stable output signal is reliable, the digital module of the electronic weighing device of long transmission distance seems very necessary.
Summary of the invention
The purpose of the present invention is contemplated to overcome prior art when adopting analog signal detection, capacity of resisting disturbance is weak, automatic compensation ability is poor, data are easily lost, stable output signal is poor, the defect that particularly long-distance transmissions is more unstable, designs the digital module of a kind of electronic weighing device, it is achieved automatically compensate, low-power consumption, capacity of resisting disturbance are strong, energy high-speed cruising, saves storage chip, reduces module volume, save the space of PCB, after power-off, data are not lost, and stable output signal is reliable, long transmission distance.
Solve the technical problem that required by the present invention and can be achieved through the following technical solutions:
A kind of digital module of electronic weighing device, including signal amplifier, analog-digital converter, microprocessor, memory, 485 communication interfaces, first analogue signal inputs described signal amplifier, described signal amplifier is connected with described analog-digital converter, by described analog-digital converter, analogue signal is converted into digital signal, described AfD converter output is connected with described microprocessor, described microprocessor directly feeds described microprocessor after being converted by signal, described microprocessor directly transmits a signal to described 485 communication interfaces after carrying out process data, instrument is transmitted a signal to finally by described 485 communication interfaces.
Signal is mainly stored by single-chip microcomputer and processes by described microprocessor.
Described single-chip microcomputer is integrated with EEPROM, it is possible to work under the ambient temperature of 40 DEG C～105 DEG C.
Described 485 communication interface circuits adopt 485 buses, and its transceiver adopts balance drive and differential received.
Described module can the various communication protocol hardware of way of realization compatible.
Owing to have employed above technical scheme, present invention have the advantage that
nullAdopt signal amplifier、Analog-digital converter、Microprocessor、Memory、The modular design of 485 communication interfaces，The digital module of this electronic weighing device，Digital compensation technique is adopted to achieve linear sensor、Delayed and temperature characterisitic automatically compensates，Single-chip microcomputer power consumption is relatively low、Anti-interference ability is stronger，There is the feature of high-speed cruising，The integrated EEPROM of single-chip microcomputer，Save storage chip，Reduce module volume，Can work under the ambient temperature of 40 DEG C～105 DEG C，，Protect the components and parts in module，Save the space of PCB，After reliable chip hold capacity ensures power-off, data will not be lost，System adopts 485 bus IC as communication interface circuit，There is the ability suppressing common mode disturbances，The digital signal transmission of employing standard，Capacity of resisting disturbance is strong，Stable output signal is reliable，Long transmission distance，Realize automatic network-building function，Can the various communication protocol hardware of way of realization compatible，By the lightning surge testing current of 100kA.
Accompanying drawing explanation
Fig. 1 is the digital module figure of the present invention；
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, the present invention is expanded on further.
A kind of digital module of electronic weighing device, including signal amplifier, analog-digital converter, microprocessor, memory, 485 communication interfaces, the resistance capacitance of filter circuit and dimension, analogue signal is input signal amplifier first, signal amplifier is connected with analog-digital converter, by modulus (A/D) transducer, analogue signal is converted into digital signal, modulus (A/D) converter output end is connected with microprocessor, microprocessor directly feeds single-chip microcomputer after being converted by signal, undertaken storing and processing by single-chip microcomputer again, single-chip microcomputer directly transmits a signal to 485 chips after carrying out process data, instrument is transmitted a signal to finally by 485 chips, the weight of weighed object is directly read instrument.
Adopt digital compensation technique, set up mathematical model accurate, reliable, utilize digital processing technology to realize linear sensor, delayed and temperature characterisitic are automatically compensated.
Single-chip microcomputer power consumption interference ability relatively low, anti-is relatively strong, has the feature of high-speed cruising, and the integrated EEPROM of single-chip microcomputer saves storage chip, reduces module volume, it is possible to work under the ambient temperature of-40 DEG C～105 DEG C, protect the components and parts in module.
Data storage circuitry is internally integrated EEPROM, and critical data is stored, and saves the space of PCB, and after reliable chip hold capacity ensures power-off, data will not be lost.
System adopts 485 bus IC as communication interface circuit, and RS485 bus is as a kind of simple and easy cheap mechanics of communication, and its transceiver adopts balance drive and differential received, has the ability suppressing common mode disturbances.
The digital signal transmission of employing standard, capacity of resisting disturbance is strong, and stable output signal is reliable, and long transmission distance, at most up to 1200m.
Realize automatic network-building function.
Can the various communication protocol hardware of way of realization compatible.
By the lightning surge testing current of 100kA.
nullThe digital module of the electronic weighing device designed by the present invention，Digital compensation technique is adopted to achieve linear sensor、Delayed and temperature characterisitic automatically compensates，Single-chip microcomputer power consumption is relatively low、Anti-interference ability is stronger，There is the feature of high-speed cruising，The integrated EEPROM of single-chip microcomputer，Save storage chip，Reduce module volume，Can work under the ambient temperature of-40 DEG C～105 DEG C，，Protect the components and parts in module，Save the space of PCB，After reliable chip hold capacity ensures power-off, data will not be lost，System adopts 485 bus IC as communication interface circuit，There is the ability suppressing common mode disturbances，The digital signal transmission of employing standard，Capacity of resisting disturbance is strong，Stable output signal is reliable，Long transmission distance，Realize automatic network-building function，Can the various communication protocol hardware of way of realization compatible，By the lightning surge testing current of 100kA.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements both fall within the claimed scope of the invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (5)
1. the digital module of an electronic weighing device, it is characterized in that: include signal amplifier, analog-digital converter, microprocessor, memory, 485 communication interfaces, first analogue signal inputs described signal amplifier, described signal amplifier is connected with described analog-digital converter, by described analog-digital converter, analogue signal is converted into digital signal, described AfD converter output is connected with described microprocessor, described microprocessor directly feeds described microprocessor after being converted by signal, described microprocessor directly transmits a signal to described 485 communication interfaces after carrying out process data, instrument is transmitted a signal to finally by described 485 communication interfaces.
2. the digital module of a kind of electronic weighing device according to claim 1, it is characterised in that: signal is mainly stored by single-chip microcomputer and processes by described microprocessor.
3. the digital module of a kind of electronic weighing device according to claim 1 or claim 2, it is characterised in that: described single-chip microcomputer is integrated with EEPROM.
4. the digital module of a kind of electronic weighing device according to claim 1, it is characterised in that: described 485 communication interface circuits adopt 485 buses, and its transceiver adopts balance drive and differential received.
5. the digital module of a kind of electronic weighing device according to claim 1, it is characterised in that: it is compatible that described module possesses various informative communication protocol hardware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410752609.4A CN105737962A (en) | 2014-12-09 | 2014-12-09 | Digital module for electronic weighing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410752609.4A CN105737962A (en) | 2014-12-09 | 2014-12-09 | Digital module for electronic weighing device |
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| Publication Number | Publication Date |
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| CN105737962A true CN105737962A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410752609.4A Pending CN105737962A (en) | 2014-12-09 | 2014-12-09 | Digital module for electronic weighing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021018160A1 (en) * | 2019-07-31 | 2021-02-04 | Mettler-Toledo (Changzhou) Measurement Technology Ltd. | Hysteresis compensation method for a weighing device |
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| CN1062036A (en) * | 1987-11-30 | 1992-06-17 | 梅特勒-托利多有限公司 | A kind of method of multiple load cell scale being carried out the load position compensation |
| JPH1090048A (en) * | 1996-09-17 | 1998-04-10 | Tanita:Kk | Weighing meter |
| CN102538918A (en) * | 2012-01-04 | 2012-07-04 | 深圳市芯海科技有限公司 | Networking intelligent digital weighing sensor |
| CN202454077U (en) * | 2012-01-04 | 2012-09-26 | 华北电力大学 | Real-time monitoring and alarming device for overload of vehicle |
| CN203231805U (en) * | 2013-03-19 | 2013-10-09 | 常州信息职业技术学院 | Electronic automobile scale based on CANopen |
| CN204346570U (en) * | 2014-12-09 | 2015-05-20 | 安徽柯力电气制造有限公司 | A kind of digital module of electronic weighing device |
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2014
- 2014-12-09 CN CN201410752609.4A patent/CN105737962A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1062036A (en) * | 1987-11-30 | 1992-06-17 | 梅特勒-托利多有限公司 | A kind of method of multiple load cell scale being carried out the load position compensation |
| JPH1090048A (en) * | 1996-09-17 | 1998-04-10 | Tanita:Kk | Weighing meter |
| CN102538918A (en) * | 2012-01-04 | 2012-07-04 | 深圳市芯海科技有限公司 | Networking intelligent digital weighing sensor |
| CN202454077U (en) * | 2012-01-04 | 2012-09-26 | 华北电力大学 | Real-time monitoring and alarming device for overload of vehicle |
| CN203231805U (en) * | 2013-03-19 | 2013-10-09 | 常州信息职业技术学院 | Electronic automobile scale based on CANopen |
| CN204346570U (en) * | 2014-12-09 | 2015-05-20 | 安徽柯力电气制造有限公司 | A kind of digital module of electronic weighing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021018160A1 (en) * | 2019-07-31 | 2021-02-04 | Mettler-Toledo (Changzhou) Measurement Technology Ltd. | Hysteresis compensation method for a weighing device |
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Application publication date: 20160706 |