3-ton electronic weighing scale with Bluetooth WiFi transmission function

3-ton electronic weighing scale with Bluetooth WiFi transmission functionparameter

Scale platform material:Carbon steel structure, surfaceSandblasting and acrylic paint treatmentThickness of steel plate6-8mm high strength and hardness, wear-resistant and impact resistant, long service life

Scale frame structure:Strengthening tendons6-8mm board bent into a U-shape, mainly overloaded with 50% of the weight

biography feel Tool:Four high-precision and high-intensity sensors with resistance150% overload capacity (made of alloy steel, with good performance and strong impact resistance)

pick up line Box:HQ-4 hole dedicated waterproof junction box, equipped with high-precision potentiometer and stainless steel shell, equipped with TVS tube (18V), anti surge impact (parallel type), strong waterproof performance

Scale platform size:1m x 1m, 1.2m x 1.2m, 1.2m x 1.5m, 1.5m x 1.5m, 1.5m x 2m, 2m x 3m, 2.5 x 2.5m (can be customized according to customer requirements)

Instrument function:Single WindowLCD display, with weight accumulation, accumulation display, accumulation clearing functions, kilogram and pound conversion functions,Easy to use in various work environmentsClear and easy to read, built-in battery, dual-purpose AC/DC, optional printing function.

Note:The size specifications of the countertop can be customized according to customer requirements (if a small weighing scale needs to be placed underground for use, our company provides construction drawings, and we do not include civil construction fees)

Can be equipped with instruments:Printing function instruments, relay output instruments4-20mA current output quantitative instrument, stainless steel instrument, counting instrument, etc

Optional:Alarm function; Three color warning light;0-24mA/0-10v output interfaceWith control; Relayoutputcontact pointwait

3-ton electronic weighing scale with Bluetooth WiFi transmission function

1.Principles of Bluetooth Technology--Introduction

The so-called Bluetooth technology is actually a short-range wireless communication technology that utilizesBluetooth "technology can effectively simplify communication between mobile communication terminal devices such as handheld computers, laptops, and mobile phones, and can also successfully simplify the interaction between these devices and othersInternetThe communication between these modern communication devices and the Internet has become faster and more efficient, paving the way for wireless communication. Simply put, Bluetooth technology enables some easily portable mobile communication devices and computer devices to connect to the internet without the need for cables, and enables wireless access to the internet.

　　2.Principles of Bluetooth Technology--master-slave relationship

Bluetooth technology stipulates that when each pair of devices communicates via Bluetooth, one must be the primary role and the other must be the secondary role in order to communicate. During communication, the primary end must search, initiate pairing, and successfully establish a link before both parties can send and receive data. In theory, a Bluetooth master device can simultaneously communicate with7A Bluetooth slave device communicates. A device with Bluetooth communication function that can switch between two roles, usually working in slave mode, waiting for other master devices to connect, and when needed, switching to master mode to initiate calls to other devices. When a Bluetooth device initiates a call in master mode, it needs to know the other party's Bluetooth address, pairing password, and other information. After pairing is completed, the call can be directly initiated.

　　3.Principles of Bluetooth Technology--call progress

When a Bluetooth host device initiates a call, the first step is to search for Bluetooth devices in the surrounding area that can be searched. After the master device finds the slave Bluetooth device and pairs it with the slave Bluetooth device, it needs to input the slave device'sPINCode, there are also devices that do not require inputPINThe code. After pairing is completed, the slave Bluetooth device will record the trust information of the master device. At this time, the master can initiate a call to the slave device, and the paired device no longer needs to be re paired for the next call. Paired devices can also initiate link building requests as Bluetooth earphones on the slave end, but Bluetooth modules for data communication generally do not initiate calls. After the link is successfully established, bidirectional data or voice communication can be carried out between the master and slave ends. In communication mode, both the master and slave devices can initiate disconnection and disconnect the Bluetooth link.

　　4.Principles of Bluetooth Technology--data transmission

In Bluetooth data transmission applications, one-to-one serial data communication is one of the common applications. Bluetooth devices set pairing information between two Bluetooth devices in advance before leaving the factory, and the master end pre stores the data of the slave end devicesPINCode, address, etc. are automatically linked when both devices are powered on, with transparent serial transmission and no need for peripheral circuit intervention. In one-on-one applications, the slave devices can be set to two types: silent state, which means they can only communicate with the designated master and are not searched by other Bluetooth devices;The second is the development status, which can be searched by the designated host or by other Bluetooth devices to establish a link.

It is adoptedNordic nRF52832/52810Designed Surface mounted Bluetooth4.0/5.0Module, this module can adoptPCBAntenna, ceramic antenna, withIPEXThere are three types of terminals. It has oneARMkernelCortex-M4FofRFTransceiver,MCUThere is a faster running speed, and the kernel running speed reaches64Mhz，512KB FLASHProgram space64KB RAMSupporting resources for other functions *. It is suitable for low-power systems, ultra-low sleep current, and low power consumption during operation.