Data Concentration Unit AMI Data Collector DC200

Company Profile
Willfar Information Technology Co., Ltd.
- Established in 2004;
- Listed on the STAR Market of the Shanghai Stock Exchange in December 2019;
- Leading supplier of meter reading (AMI) equipment and operation service;
- The first company to develop "One DCU Reading Multi-meter" solution in China;
- The first company to have large-scale application of technologies and systems like "CPU smart-card Charge and Control", "One DCU Reading Multi-meter", LoRa-based RF Communication and "District Metering Area (DMA)”

Introduction

- The collector DC200 installed between DCU and water/electric meters.

- The collector DC200 links with DCU platform through PLC network. While it communicates with electricity meters through local RS485 technology and water meter via RF LoRa technology.

- The DCU serves as the main node in the PLC network, and DC200 are sub nodes. Main node is responsible for managing the network, including sub node registration, network path optimization, etc.

- Sub nodes receive commands from main node and make response to main node through power line network.

Technical Parameters

Certificate

CE

Functional Elements

DC200 is composed of several elements, including:

1. CPU

2. RS485 interface

3. LoRa/RF P2P communication interface

4. Power amplifier

5. Coupling circuit

6. Voltage transformer and DC/DC power supply to adjust voltage for CPU

7. LED control

DC200 adopts the PLC or RF Mesh high-speed CPU, power amplifier, coupling circuit, DC/DC power supply, RS485 interface, LoRa/RF P2P communication interface and LED control. The PLC/RF CPU demodulates the carrier signal from coupling circuit and modulate the data sent by power line/air. The CPU also communicates with meter. RS485 and RF P2P is used for connecting electrical meter to DC200, and LoRa communication interface is used for communicating with water meter. LED control indicates the working status of DC200.

Features

1. LED Indication

DC200 is composed of five LED lights:

POWER: Power on indication, always on

RUN: Running indication, the frequency of blink is 2.5Hz

UP_TX: blink when send data to uplink network

UP_RX: blink when receive data from uplink network

DN_TX/RX: blink when send /receive data from downlink network

(Note: Uplink: G3-PLC/BPLC/Wi-SUN RF Mesh/G3, WIFI; Downlink: RS485 / RF-P2P connect to electricity meter, LoRa connect to water meter)

2. RS485 Communication interface

It is suggested that the voltage between RS485 A and RS485 B should be measured every time a meter is installed. It should not be zero or negative.

RS485 line length should not be exceed 1000m.

3. LoRa Communication interface

DC200 has two frequency of LoRa, one is fixed for wake up the water meter, the other one is unfixed for data notification and reading meter data.

4. RF P2P Communication interface

DC200 support the point to point RF star network downlink communication.

5. WiFi Communication interface

There is one WiFi function for debug and setting/reading its parameters via AT commands, including electricity/water meter archive.

Situation

For smart meter required communication function. Pluggable.

Dimension

Introduction

As the first company in Hunan Province to be listed on SSE STAR Market, Willfar is the pioneer manufacturer in China that can simultaneously provide related industries with all kinds of advanced electricity, water, gas and heat metering products and meters for power distribution, power quality monitoring equipment, a full range of energy data concentrators, relay protection equipment, switchgear products and equipment related to metering automation system and all kinds of application systems as well as services which cover the demand of the whole process of energy production, distribution, transmission and consumption.

Willfar Information Technology Co., Ltd always focuses on customers and takes full control of products’ delivery and deployment, including the process of designing, testing and experimenting as well as the manufacturing process of raw material. We attach great importance to production control plan, potential failure mode and product reliability design which require us to implement the production approval procedure and control the production process strictly so as to ensure the products’ quality.

On November 4, 2013, President Xi Jinping, also general secretary of the Communist Party of China (CPC) Central Committee, visited Wasion in Changsha. He visited the product showroom and production workshops, where he talked with workers and labor models. Xi spoke highly of Wasion's achievements in product development and market expansion and encouraged the company to step up innovation in technology, management, product, marketing and branding.

So far, Willfar has 396 valid patents, of which 26 are invention patents, 240 pieces for utility model, 130 pieces for design and 442 software copyrights; it has also received 10 technical awards of provincial or ministerial level or above. Willfar has participated in the setting of 15 national industry standards, 10 of which have been published.

Willfar Information Technology Co., Ltd takes "smart manufacturing capability" as one of its core competing powers by realizing the whole process data tracing and full-lifecycle management of product design, processing, procurement, production, logistics and service via SCM, CRM and APS on the basis of ERP, PDM, PLM and MES.

So far, Willfar has 396 valid patents, of which 26 are invention patents, 240 pieces for utility model, 130 pieces for design and 442 software copyrights; it has also received 10 technical awards of provincial or ministerial level or above. Willfar has participated in the setting of 15 national industry standards, 10 of which have been published.

The smart manufacturing technology research project of Willfar is the upgrading and reconstruction of the production facility which is about 100,000 square meters. It will become a leading digital factory with full coverage of information system, high level of production technology and automation.