CN-224202543-U - High-precision electronic scale alarm system based on resistance type sensor

CN224202543UCN 224202543 UCN224202543 UCN 224202543UCN-224202543-U

Abstract

The utility model discloses a high-precision electronic scale alarm system based on a resistance type sensor, which comprises a core control module, a sensor module, an analog-to-digital conversion module, a display module, a key module, an alarm module and a power module, wherein the sensor module comprises an HL-8 type weighing sensor and a bearing platform, the bearing platform comprises an upper bearing plate, an upper gasket, a lower bearing plate, a lower gasket and screws, the left side of the top of the HL-8 type weighing sensor is connected with the bottom of the upper bearing plate through the upper gasket and the screws, and the right side of the bottom of the HL-8 type weighing sensor is connected with the top of the lower bearing plate through the lower gasket and the screws, so that a suspension distance above and below is formed through the gaskets. The electronic scale alarm system improves the measurement accuracy and stability of the weight, has an overload alarm prompt function, and can be suitable for a scene in which the weight of a measured object is required to be continuously monitored.

Inventors

PENG ENBO
LIU XINYUAN
HUANG CHENFEI
Wen Dadong
YI ZHOU

Assignees

湖南工程学院

Dates

Publication Date: 20260505
Application Date: 20250627

Claims (10)

1. The high-precision electronic scale alarm system based on the resistance sensor is characterized by comprising a core control module, a sensor module, an analog-to-digital conversion module, a display module, a key module, an alarm module and a power module, wherein the core control module is respectively in communication connection with the analog-to-digital conversion module, the display module, the key module and the alarm module, the sensor module is in communication connection with the analog-to-digital conversion module, the power module is respectively in power supply connection with the core control module, the analog-to-digital conversion module and the display module, the core control module supplies power for the alarm module, and the sensor module comprises an HL-8 type weighing sensor and a bearing platform; The bearing platform comprises an upper bearing plate, an upper gasket, a lower bearing plate, a lower gasket and screws, wherein the left side of the top of the HL-8 type weighing sensor is connected with the bottom of the upper bearing plate through the upper gasket and the screws, and the right side of the bottom of the HL-8 type weighing sensor is connected with the top of the lower bearing plate through the lower gasket and the screws, so that the suspension distance above and below is formed through the gaskets.
2. The high-precision electronic scale alarm system based on the resistive sensor of claim 1, wherein the core control module is an STM32 singlechip, and the analog-to-digital conversion module is a 24-bit A/D converter chip of HX711 model.
3. The resistive sensor-based high precision electronic scale alarm system of claim 1, wherein the flying distance is less than 1cm.
4. The resistive sensor-based high-precision electronic scale alarm system according to claim 3, wherein the bearing plate, the upper gasket, the lower bearing plate and the lower gasket are made of polymethyl methacrylate (polymethyl methacrylate) organic glass.
5. The resistive sensor-based high-precision electronic scale warning system according to claim 4, wherein the upper bearing plate and the lower bearing plate are specifically two round plates with the same specification, the diameter of the round plates is 10cm, and the thickness of the round plates is 2mm.
6. The high-precision electronic scale alarm system based on the resistive sensor according to claim 5, wherein three small screws are uniformly arranged on the round plate of the lower bearing plate along the circumferential direction to serve as a stable base.
7. The resistive sensor-based high-precision electronic scale alarm system according to claim 2, wherein the a+ and a-two signal ports of the 24-bit a/D converter chip of the HX711 model are connected to the signal output terminal of the HL-8 type weighing sensor.
8. The resistive sensor-based high-precision electronic scale alarm system of claim 2, wherein the STM32 single-chip microcomputer is specifically STM32F103C8T6.
9. The resistive sensor-based high-precision electronic scale alarm system according to claim 1, wherein the display module is an LCD1602 character lattice liquid crystal module and the power module is a mobile power supply.
10. The resistive sensor-based high-precision electronic scale alarm system according to claim 1, wherein the alarm module is a buzzer, the key module comprises keys S1-S3, the key S1 is used for selecting ten bits, units, ten bits, percentiles and thousandths of a threshold value, the key S2 is used for decrementing a number down by one bit, and the key S3 is used for incrementing a number up by one bit.

Description

High-precision electronic scale alarm system based on resistance type sensor Technical Field The utility model belongs to the technical field of weight monitoring, and particularly provides a high-precision electronic scale alarm system based on a resistance sensor. Background The electronic scale is a novel instrument in the weighing technology and is widely applied to various occasions. The working principle of the electronic weighing system is that the pressure sensor firstly senses the mass of the measured object and converts the mass into a weak electric signal. Compared with mechanical scales, the electronic scale has the characteristics of high measurement precision, convenient calibration, strong anti-interference capability, various functions, visual and clear digital display, high reading speed, small and light volume, waterproof and dustproof protection designs of partial models, better durability, low maintenance cost, wide application scene, intelligent application support (such as access to the Internet of things, matching with APP recorded data and the like), and the like, can work in various environments, can remotely transmit weight signals, is easy to realize weight display digitization, is networked with a computer, realizes production process automation, and improves labor productivity. However, because the sensor for weighing in the electronic scale is easily affected by the installation mode and the bearing platform structure, the real-time weight obtained by measurement is not accurate and stable enough, in addition, the electronic scale often has only a single weight measurement function, has no overload alarm prompt function, cannot be suitable for a scene that the weight of a weighing object needs to be continuously monitored (such as weighing the weight of volatilizable alcohol in a laboratory, if the weight of the volatilizable alcohol is reduced if the time is too long), and is not intelligent and humanized. Based on the above, it is highly desirable to design a high-precision electronic scale alarm system based on a resistive sensor, so as to improve the measurement precision and stability of weight and provide an overload alarm prompt function. Disclosure of utility model First, the technical problem to be solved Based on the detection, the high-precision electronic scale alarm system based on the resistance sensor provided by the utility model can improve the measurement precision and stability of the weight, has an overload alarm prompt function, and can be suitable for a scene of continuously monitoring the weight of an object to be measured. (II) technical scheme The utility model provides a high-precision electronic scale alarm system based on a resistance sensor, which comprises a core control module, a sensor module, an analog-to-digital conversion module, a display module, a key module, an alarm module and a power module, wherein the core control module is respectively in communication connection with the analog-to-digital conversion module, the display module, the key module and the alarm module, the sensor module is in communication connection with the analog-to-digital conversion module, the power module is respectively in power supply connection with the core control module, the analog-to-digital conversion module and the display module, the core control module supplies power for the alarm module, and the sensor module comprises an HL-8 type weighing sensor and a bearing platform; The bearing platform comprises an upper bearing plate, an upper gasket, a lower bearing plate, a lower gasket and screws, wherein the left side of the top of the HL-8 type weighing sensor is connected with the bottom of the upper bearing plate through the upper gasket and the screws, and the right side of the bottom of the HL-8 type weighing sensor is connected with the top of the lower bearing plate through the lower gasket and the screws, so that the suspension distance above and below is formed through the gaskets. Further, the core control module is an STM32 singlechip, and the analog-to-digital conversion module is a 24-bit A/D converter chip of HX711 model. Further, the suspension distance is less than 1cm. Furthermore, the bearing plate, the upper gasket, the lower bearing plate and the lower gasket are made of polymethyl methacrylate organic glass. Further, the upper bearing plate and the lower bearing plate are specifically two round plates with the same specification, the diameter of each round plate is 10cm, and the thickness of each round plate is 2mm. Furthermore, three small screws are uniformly arranged on the round plate of the lower bearing plate along the circumferential direction so as to serve as a stable base. Further, the A+ and A-signal ports of the 24-bit A/D converter chip of the HX711 model are connected with the signal output end of the HL-8 type weighing sensor. Further, the STM32 single-chip microcomputer is specifically STM32F103C8T6. Further, the display mod