Data Concentration Unit AMI RF Gateway WFET-7000E/S

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 Willfar WFET-7000E/S RF Gateway complies with the Wi-SUN FAN specification which is defined by Wi-SUN Alliance™ to provide FAN wireless connectivity. Through its ISM sub-GHz radio, a wide variety of Internet of Things (IoT) endpoints that require low power operation or long range transmission distances can now be connected and located more economically than ever before.

- WFET-700E/S RF Gateway enables AMI/IoT implementations mandating low data rates over long-distance connectivity. The gateway is an IP65-grade outdoor product with pole installation.

- Wi-SUN communication technology has the characteristics of long-distance transmission, security, high scalability, interoperability, and low power consumption. It is widely used in the field of AMI smart meter reading.

Technical Parameters

Certificate

Wi-SUN/IEEE 802.15.4g/IEEE 802/IETF IPv6

Features

1. Manages up to 100,000 IoT devices, and up to 1,000 smart meters for AMI implementation.

2. Supports the regional frequency profile defined for Wi-SUN Alliance such as CHINA 470-510MHZ, EU 863-870 MHz, India 865-867 MHz, US 902-928 MHz, Australia 915-928 MHz etc.

3. Standards-based FAN, protocol such as IPv6. 6LoWPAN, support for all IP traffic over radio Mesh networks, Comply IEEE 802.15.4g/e and IEEE 802.11i security.

4. Supports open protocol DLMS/COSEM.

5. Rich Interface options: provides RF Mesh, IP backhauls, such as Gigabit Ethernet, 4G/LTE, and Wi-Fi.

RF Mesh Technique

1. According to Wi-SUN FAN specification allows seamless interconnections between smart-grid devices produced by different suppliers.

2. Wi-SUN based wireless equipment operates in frequency bands below 1GHz, even in the presence of interference and some types of obstacles.

3. A big advantage of Sub-GHz wireless communications is that it can be implemented with extremely low levels of power consumption compared with other wireless communications.

Wi-SUN wireless adopts the IEEE802.15.4g standard for physical layers, and can maintain communications even in environments that have over 1000 nodes. Its MAC layer conforms to IEEE802.15.4e.

4. It achieves improvements in throughput and security compared to wireless networks based just on IEEE802.15.4.

5. It has long-distance transmission and low power consumption to meet the demand of smart grid and IoT market

6. It supports IPv6, effectively improving interoperability and security in IoT applications

Willfar’s wireless RF mesh architecture offers utilities a cost effective and simplified path towards upgrading field communications to enable more demanding utility field automation applications.

Function

The WFET-7000E/S gateway support at least the following functionalities:

a) Auto-detection of new meters in the grid

Automatically discovering new meters and ready to dynamic topology changes.

b) Meters network management

Able to manage the link and control all associated meters. Besides, DCU shall have the ability to get the node RF network status (online, offline) and the FAN network topological graph.

c) Time synchronization

Support synchronization of the RTC from the centralized server like NTP or HES.

d) Gateway functionality

Able to provide a direct transparent link to the end meters from HES. This function allows HES to get a real-time data directly from any meter it connected to, by end-to-end secure gateway functionality.

e) Automatic collection of meters data

The Gateway forwards meter consumption data to HES in an automated manner. This function allows an automatic meter reading delivery to up level AMI elements to exchange. Automatic data sending should be based on Schedule, Events and Requests.

f) Alarm management

It manages meter tampering or inform about any event and alarm regarding the service. Alarms and Messages especially fraud detection, rewiring, and power off and on shall push to HES automatic.

g) Configuration and firmware updates

It support parameters configuration and firmware upgrades be locality and remotely upgradable by instructions from HES/MDMS or HHU.

h) Security feature

The gateway have security features to preclude any access of non-authorized activity and restrict performing activities that are not within authorization.

User Interface

1. Power Interface

DC12V +/- 2V power input, using external AC / DC Adapter power supply.

Switching power supply specifications: AC220V input, DC12V output, built-in battery can maintain normal work for 8 hours after AC220V power failure.

2. Wi-SUN Antenna Interface

One Wi-SUN is used for downlink communication. The Wi-SUN antenna specification is IP65, the gain is about 2.5dBm, and the omnidirectional antenna.

3. Wi-Fi Interface

One channel of Wi-Fi is used for debugging, the rate is> 10Mbps, the communication distance is> 10 meters, the frequency is 2.4G, and the Wi-Fi antenna is built-in.

4. 4G antenna Interface

One 4G module is used for uplink communication, which can be plugged and replaced. 4G module antenna specifications are IP65, gain about 2dBm, omnidirectional antenna.

4G module supports 2G / 3G / 4G full Netcom system.

5. USB Interface

One USB2.0 interface for local firmware upgrade.

6. Ethernet Interface

One 10 / 100M Ethernet interface, function for uplink communication or local parameter configuration.

7. RS232 Interface

One RS232 interface for local equipment maintenance.

Installation

The gateway is designed to be mounted on a vertical pole or wall using a mounting bracket. The mounting bracket is a standard accessory. The gateway is fixed to the mounting bracket with 4 M6 stainless steel screws, the Wi-SUN antenna is fixed to the mounting bracket with 4 M6 stainless steel screws, and the power supply is fixed to the mounting bracket with 4 M4 stainless steel screws. The gateway and the gateway bracket are directional, and the debugging interface must be installed facing down. As shown below:

Ensure that the gateway is installed in a structure that is secure and capable of supporting a payload of at least 136 kg (300 lbs). The area below must be free of obstacles for cable entry.

The gateway wall-mounting installation procedure is as follows:

1. Install 4 M8 expansion bolts on the wall according to the relative position of the fixing holes of the gateway bracket;

2. Fix the gateway to the bracket using the provided mounting screws;

3. Hang the integrated gateway and bracket to the expansion screws on the wall and fix them;

The gateway pole installation procedure is as follows;

1. Fix the gateway to the bracket using the provided mounting screws;

2. If the diameter of the vertical pole is ≤120mm, use the provided pole mounting accessories to fix the gateway bracket to the vertical pole;

3. For 120mm <vertical pole diameter ≤320mm, you need to buy a hoop with a wire diameter of 8mm and a diameter of 330mm to fix the gateway bracket to the vertical pole;

4. For vertical rod diameter> 320mm, you need to purchase corresponding cross arms and hoop to fix the gateway bracket to the vertical rod.

Situation

For IoT or AMI solutions.

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.