CN111024193A - Wireless intelligent weighing sensor system - Google Patents
Wireless intelligent weighing sensor system Download PDFInfo
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- CN111024193A CN111024193A CN201911414341.2A CN201911414341A CN111024193A CN 111024193 A CN111024193 A CN 111024193A CN 201911414341 A CN201911414341 A CN 201911414341A CN 111024193 A CN111024193 A CN 111024193A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/007—Integrated arrangements for generating electrical power, e.g. solar cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
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Abstract
The invention discloses a wireless intelligent weighing sensor system. The system comprises a cloud server, a wireless access part, a weighing sensor module, a controller module, an LED screen, an A/D converter, a serial port and intelligent weighing equipment. The system is connected with a wireless module through a standard interface, a transparent transmission mode is started to transmit data after configuration is successful, a weighing sensor amplifies a circuit signal to a controller after sensing through a strain gauge core to realize bidirectional transmission with an LED screen and then transmits the data to an A/D converter, the A/D converter selects a speed multiplication gain after receiving the data and sends the data to awakened intelligent weighing equipment, and the equipment can directly transmit generated background data to a cloud server for backup storage through wireless. The system is sensitive in response, high in coverage, low in power consumption and stable in operation, is particularly suitable for being applied to the fields of small household weighing tools (such as a weighing scale) and the like, can realize cloud transmission of data, and meets the observation requirement of weighing change of a user in a certain time period.
Description
Technical Field
The invention belongs to the field of weighing sensor production research and development, and particularly relates to a wireless intelligent weighing sensor system.
Background
The weighing machine industry in China has huge market potential, but the independent products in China in the current market are few in variety and not strong in technical performance, so that the market competitiveness is limited, further deep research and development aiming at the market are needed, and the weighing sensor is used as a core component of the weighing machine, is a key for the development of the whole industry chain, is a device for converting mass signals into measurable electric signals and outputting the electric signals, is specially used on the weighing machine, and can convert the weight of a measured object on the weighing machine into the electric signals and outputting the electric signals according to a certain functional relationship. The sensor can be divided into photoelectric, hydraulic, electromagnetic, capacitive and vibrating types according to different conversion principles, and the development of the weighing sensor can be divided into three types of weighing sensors, namely analog weighing, digital weighing and intelligent weighing sensors according to the output form and functional characteristics. The intelligent weighing sensor is used as a latest generation weighing sensor, improves the precision and the interconnectivity of the sensor by adopting a standard data communication bus interface and various compensation algorithms, is more sensitive and simple and can ensure the consistency. However, the intelligent weighing sensor is often used for one-time weighing, data cannot be reserved, and the remote transmission capability needs to be enhanced, and with the rapid development of artificial intelligence, people also put forward higher intelligent requirements on daily appliances, so that the intelligent weighing sensor is used as a core module for constructing an intelligent weighing system, and other carriers are required to be combined to further enhance the interconnection and the stability of remote transmission.
Disclosure of Invention
It is an object of the present invention to provide a wireless intelligent load cell system that responds to the problems noted in the background.
The purpose of the invention can be realized by the following technical scheme: a wireless intelligent weighing sensor system is characterized by comprising a cloud server, a wireless access part, a weighing sensor module, a controller module, an LED screen, an A/D converter, a serial port and intelligent weighing equipment. The system operation process is as follows:
(1) the cloud server is connected with the wireless module through a standard interface, and after configuration is successful, a transparent transmission mode is started to transmit data.
(2) And after receiving the data, the weighing sensor amplifies a circuit signal to the controller through the strain gauge core so as to realize bidirectional transmission with the LED screen.
(3) The main control chip in the controller realizes internal temperature acquisition and information storage and circuit design of a communication interface through logic control of an internal power-on reset circuit, and a manual reset key is arranged outside the controller.
(4) The processed signal is passed to an a/D converter which selects the speed gain upon receipt of the data.
(5) After the A/D converter converts the mode, processed data are transmitted to awakened intelligent weighing equipment in a bidirectional mode through a serial port, and the equipment can transmit generated background data to a cloud server for backup storage through wireless and direct transmission.
Further, a hardware circuit diagram acquisition data debugging program can be set up in Proteus software.
Furthermore, a software source program can be written in Keil, and the generated HEX file is imported into Proteus for joint debugging simulation after compiling.
And further, building a remote Server by adopting the Wamp Server and the Google cloud.
The invention has the beneficial effects that: adopt the constant current source to supply power to resistance strain gauge, effectively reduce the influence of temperature, low noise signal amplifier circuit and high-accuracy AD converting circuit based on chopper amplification technique have been designed, in order to realize high accuracy signal acquisition of weighing, adopt wireless protocol coverage system simultaneously, the strong and low-power consumption of coverage, the reaction is sensitive, the operation is stable, especially, be suitable for applying small-size domestic weighing tool, fields such as weighing scale, and can realize the high in the clouds transmission of data, satisfy the observation demand that the user weighed the change in certain period of time, weighing sensor's interconnectivity and remote transmission's stability have been strengthened.
Drawings
Fig. 1 is a flow chart of an architecture of a wireless intelligent load cell system according to the present invention.
Detailed Description
The technical solution of the present invention will be further described with reference to the following examples.
Examples
Referring to fig. 1, a wireless intelligent weighing sensor system is characterized by comprising a cloud server, a wireless access part, a weighing sensor module, a controller module, an LED screen, an a/D converter, a serial port and an intelligent weighing device. The system operation process is as follows:
(1) the cloud server is connected with the wireless module through a standard interface, the interface is a standard UART interface, the wireless module is an ESP8266Wi-Fi module, and after connection configuration is successful, a transparent transmission mode is started to transmit data. The wireless access forwards data through the router and directly forwards the data to a data server on the Internet, so that the centralized storage of the data is realized.
(2) And after receiving the data, the weighing sensor amplifies a circuit signal to the controller through the strain gauge core so as to realize bidirectional transmission with the LED screen. And the model of an energy-saving LED1307 with low energy consumption is adopted. The strain gauge with opposite change of the weighing sensor is connected to one arm of the electric bridge, the other arm is connected with two same resistance values as reference values, so that the elastic body and the resistance strain gauge cable are mechanically deformed under the action of external force, the resistance values of the elastic body and the resistance strain gauge cable correspondingly change, and the resistivity of the material changes after the resistance is stressed and the geometric dimension changes or is stressed and deformed, so that the pre-transmission of converting a mass signal into an electric signal is realized.
(3) The main control chip in the controller realizes internal temperature acquisition and information storage and circuit design of a communication interface through logic control of an internal power-on reset circuit, and a manual reset key is arranged outside the controller. The A/D converter chip in the system is HX 711. In the system, the controller module selects an AT89C51 singlechip as a main control chip. The single chip microcomputer of the system has the maximum efficiency under 86MHz, and can provide a 256KB embedded Flash memory for program data storage, the temperature acquisition circuit is designed to adopt a digital temperature sensor TMP275 to carry out temperature measurement, the information storage circuit is an E2PROM memory, an RS-485 serial communication interface is adopted, and automatic control and transmission are realized through a logic algorithm.
(4) The processed signal is passed to an a/D converter which selects the speed gain upon receipt of the data. The multiple is 120 times, thereby turning on the a/D conversion mode.
(5) After the A/D converter is in a conversion mode, processed data are transmitted to awakened intelligent weighing equipment in a two-way mode through a serial port, and three serial pins are mainly arranged in the intelligent weighing equipment and respectively: transmission signal selection, data command selection and read-write selection. The device can directly transmit the generated background data to the cloud server for backup storage through wireless. The system can enable a user to upload the measured data to the cloud server through the intelligent device and wireless transmission each time, so that the weighing historical data can be conveniently browsed, the corresponding data can be moved, mined and analyzed, the experience of the user is improved, and the overall monitoring and subsequent research and development of the device and the system are facilitated.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A wireless intelligent weighing sensor system is characterized by comprising a cloud server, a wireless access part, a weighing sensor module, a controller module, an LED screen, an A/D converter, a serial port and intelligent weighing equipment.
2. The system of claim 1, wherein the system operates as follows:
(1) the cloud server is connected with the wireless module through a standard interface, and after configuration is successful, a transparent transmission mode is started to transmit data.
(2) And after receiving the data, the weighing sensor amplifies a circuit signal to the controller through the strain gauge core so as to realize bidirectional transmission with the LED screen.
(3) The main control chip in the controller realizes internal temperature acquisition and information storage and circuit design of a communication interface through logic control of an internal power-on reset circuit, and a manual reset key is arranged outside the controller.
(4) The processed signal is passed to an a/D converter which selects the speed gain upon receipt of the data.
(5) After the A/D converter converts the mode, processed data are transmitted to awakened intelligent weighing equipment in a bidirectional mode through a serial port, and the equipment can transmit generated background data to a cloud server for backup storage through wireless and direct transmission.
3. The system of claim 1, wherein the wireless access is used for forwarding data through the router and directly to a data server on the internet, so that centralized data storage is realized.
4. A wireless intelligent load cell system according to claim 1, wherein the a/D converter chip in said system is HX 711.
5. The system of claim 1, wherein the controller module of the system is a main control chip selected from an AT89C51 single chip microcomputer.
6. The system of claim 1, wherein the temperature acquisition circuit is configured to measure temperature using a digital temperature sensor (TMP) 275, and the information storage circuit is an E2PROM memory using an RS-485 serial communication interface.
7. The system of claim 1, wherein the single-chip microcomputer is most efficient at 86MHz and provides 256KB of embedded Flash memory for program data storage.
8. The wireless intelligent weighing sensor system of claim 1, wherein the intelligent weighing device is mainly internally provided with three series pins, which are respectively: transmission signal selection, data command selection and read-write selection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414341.2A CN111024193A (en) | 2019-12-31 | 2019-12-31 | Wireless intelligent weighing sensor system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414341.2A CN111024193A (en) | 2019-12-31 | 2019-12-31 | Wireless intelligent weighing sensor system |
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| CN111024193A true CN111024193A (en) | 2020-04-17 |
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| CN201911414341.2A Pending CN111024193A (en) | 2019-12-31 | 2019-12-31 | Wireless intelligent weighing sensor system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111885530A (en) * | 2020-07-21 | 2020-11-03 | 成都英孚克斯科技有限公司 | Weighing data acquisition unit and method based on data integration encryption |
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| CN202903312U (en) * | 2012-10-29 | 2013-04-24 | 陕西理工学院 | Weighing device with wireless transmission function |
| CN203276522U (en) * | 2013-04-15 | 2013-11-06 | 内蒙古自治区科学技术信息研究院 | System capable of realizing wireless transmission of data acquisition |
| CN203929181U (en) * | 2014-05-17 | 2014-11-05 | 温州大学 | A kind of electronic scales |
| CN106710183A (en) * | 2015-11-18 | 2017-05-24 | 青岛海日安电子有限公司 | Wireless transmission system for realizing data collection |
| CN107436174A (en) * | 2017-08-11 | 2017-12-05 | 重庆第二师范学院 | A kind of key WPS wireless weighting scale |
| CN209570263U (en) * | 2019-04-11 | 2019-11-01 | 中国科学院南京土壤研究所 | A kind of humid control formula electronic balance and data record shared system |
-
2019
- 2019-12-31 CN CN201911414341.2A patent/CN111024193A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202903312U (en) * | 2012-10-29 | 2013-04-24 | 陕西理工学院 | Weighing device with wireless transmission function |
| CN203276522U (en) * | 2013-04-15 | 2013-11-06 | 内蒙古自治区科学技术信息研究院 | System capable of realizing wireless transmission of data acquisition |
| CN203929181U (en) * | 2014-05-17 | 2014-11-05 | 温州大学 | A kind of electronic scales |
| CN106710183A (en) * | 2015-11-18 | 2017-05-24 | 青岛海日安电子有限公司 | Wireless transmission system for realizing data collection |
| CN107436174A (en) * | 2017-08-11 | 2017-12-05 | 重庆第二师范学院 | A kind of key WPS wireless weighting scale |
| CN209570263U (en) * | 2019-04-11 | 2019-11-01 | 中国科学院南京土壤研究所 | A kind of humid control formula electronic balance and data record shared system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111885530A (en) * | 2020-07-21 | 2020-11-03 | 成都英孚克斯科技有限公司 | Weighing data acquisition unit and method based on data integration encryption |
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