pcbinternalantenna

The E-Waste Problem and How a Circular Economy Can Solve It The push for greener habits has become global, and for good reason. As this mentality is applied to waste produced by electrical and electronic equipment, we're seeing positive changes to the daily life of engineers.

The resources that we use to fuel our lives today, whether it be in the products we create or the ways that we power them, are finite. On top of this, much of what we make is littered rather than properly dealt with, even though much of it may be repurposed for different applications than their intended use. These issues and their solution, namely the circular economy, have the potential to change the abilities and resources at the hands of the everyday design engineer.

WEEE (waste electrical and electronic equipment), also commonly referred to as e-waste, is being looked into by many for the application of reuse, refurbishment or repurposing in order to truly get all we can from the products we create, whether that use is in their designed application or some new one. The products that are referred to in e-waste are split into six categories as per a research paper by PRé Consultants.They are:

AC-DC dual
ousehold appliances

Small household appliances

Environmental protection has always been the direction of the country's vigorous rectification. Relevant departments are also continuously promoting the construction of environmental quality monitoring system. The construction and maintenance costs of traditional monitoring methods are high, and it is difficult to popularize in a large area. The HJ212-2017 protocol is a data transmission standard for online pollutant monitoring systems issued by the Science and Technology Standards Department of the Ministry of Ecology and Environment. From the regulatory level, the data transmission standards for the environmental monitoring process are unified. With the continuous development of Internet of Things technology and environmental monitoring business, automatic, China industrial IoT terminals Manufacturers   intelligent and networked automatic monitoring of environmental quality has become the focus of work for a period of time in the future.

The HJ212-2017 standard communication protocol adopts the response mode, and the complete command is composed of the requester's initiation and the responder's response. The requester sends a request to the responder, and after the response is received, it sends a request response to the requester, and the handshake is completed. If the requester does not receive a response to the request, it will be processed according to the response timeout.

The data structure of the communication protocol is shown in Figure 1. All communication packets are composed of ASCII code characters (except Chinese characters, which use UTf-8 code)

E840-DTU (GPRS-03) is a digital radio product launched by Ebyte that supports transparent transmission of cellular network data. This product has complete software functions and covers most common application scenarios. Users only need to set a simple Realize two-way data transparent transmission from serial port to network server. It is an industrial-grade quad-band GSM/GPRS data transmission radio.

 The E28 series is a 2.4GHz RF transceiver module designed and manufactured by Chengdu Ebyte Electronic Technology Co., Ltd., with long communication distance; it has extremely low power consumption in low power mode. This series comes with a high performance PCB onboard antenna. 

The E28 series uses Semtech's SX1280 RF chip, which contains a variety of physical layers and a variety of modulation methods, such as LORA, FLRC, GFSK. The special modulation and processing method

PCB internal antenna