An electronic scale is a device that uses electronic technology to measure the weight of an object. It is one of the indispensable daily necessities in modern life. This article will introduce the electronic scale solution products from five aspects: product introduction, structural design, working principle, functional design and feature advantages.
First of all, the product introduction of the electronic scale solution.
An electronic scale is a portable device that consists of a body, a display screen, and a weighing platform. It is widely used in homes, stores, markets, and other occasions to weigh food, medicine, and other items. It accurately measures the weight of an object and displays it digitally on the display.
Next, the structural design of the electronic scale solution product.
The scale is housed in a rugged plastic enclosure that contains a circuit board consisting of a main control, capacitors, resistors, and a PCB board with embedded circuitry, load cells, and displays. The weighing pan is made of stainless steel, which has good corrosion resistance and stability. The whole structure is designed to be compact, easy to carry and use.
Then, how the scale scheme works.
The working principle of electronic scales is based on the principle of resistive strain, which means that when an object is applied to the weighing pan, the load cell creates a small deformation. These deformations are converted into electrical signals by sensors and then passed on to the circuit board for processing. The board is calculated and converted to display the weight data on the display.
Secondly, the functional design of the electronic scale scheme.
Boot mode: automatic scale boot, weight of 50kg+0.1kg。
Units and display indexes: Two units of kg and ib are supported, and the corresponding graduation value is 01kg、0.2lb, toggle the switch to change the unit.
Weighing range: 30kg~183.0kg
Voltage and current: When working normally, the power supply voltage of the sensor part is 23V, working current 6mA, standby current 1UA, scanning current 200UA.
Calibration: Three-point calibration, 50kg, 100kg and 150kg.
Low power prompt: When the battery voltage is lower than 24+0.At 1V, the LCD displays"lo", automatic standby after 4 seconds.
Overload Reminder: When the weighing value is greater than 183At 0kg, the LCD will be displayed"ol”。
Automatic Standby Time:
After locking weight: 10+1s;
Unstable shutdown: 20+1s;
After powering on to zero: 10+1s;
Zero: Reset to zero after the full display is stable after booting;Weighing state, weight less than 3kg and stable automatic zero;
Humidity characteristics: chip operating temperature is -40°C 85°C relative humidity: 90%.
Operating Voltage: 24v~3.6V power supply.
Memory range: 3 groups of memory values, the memory range is 03+-0.1kg
Backlight: The backlight is on when the machine is turned on or weighed, and the backlight is off for 10s without weighing or no operation.
Communication mode: Bluetooth, wifi, serial port.
App communication: Mi Home, Tuya, OKOK, Leqing, APP, Mini Program.
Finally, the electronic scale solution chip is introduced.
The SIC8833 is an 8-bit RISC MCU with a 24-bit ADC and built-in 8K 16-bit OTP program memory.
High-performance RISC CPU:
8-bit MCU
Built-in 8K 16-bit program memory OTP
488 bytes of data memory (SRAM).
There are only 43 words of instruction.
8 levels of storage stack.
Five levels of instruction cycle are available.
2MHz 1MHz 500khz 250khz 125khz, default is 500kHz.
Peripheral characteristics: 24-bit bidirectional I-O port.
1 way buzzer, optional pt27 or pt23 outputs.
6 internal interrupts (ADC, UART, TISER0, TISER2, RTC, LVD), 2 external interrupts.
5 input port article addresses with wake-up function.
4 16 LCD, 7 8 LED articles.
1 input fully differential 24-bit sigma-delta ADC
Built-in 1 2 4 8 16 32 64 128 256x PGA
Built-in temperature sensor.
Low Voltage Detection (LVD) pin.
1-way uart
Built-in comparator.
Low power consumption features:
MCU operating current.
Normal mode 15mA 16MHz (working voltage 3V, instruction cycle 500kHz).
The current in sleep mode is less than 15μa
Package: QFN32
To sum up, electronic scale is a convenient and practical measuring tool, and its product introduction, structural design, working principle, and functional design all make it one of the indispensable devices in modern life. Whether it's for home use or business, electronic scales can help us accurately measure the weight of objects, providing convenience and accuracy.