Mbus remote water meter technical field and background technology introduction

Mbus remote water meter is a remote meter reading system for heating meters with MBUS interface and pulse interface water meters. Mbus remote water meters have a control center and a user terminal that communicates with the control center through a communication bus. The control center is a PC management machine connected through a communication controller Communication bus; Mbus remote water meter user terminal has multiple heating meter collectors with the same structure and multiple water meter collectors with the same structure. One end of each heating meter collector is connected to the communication bus, and the other end of the Mbus remote water meter is connected to multiple MBUS. Interface heating meter, the output terminal of each water meter collector is connected to the communication bus, and the Mbus remote water meter input terminal is connected to multiple water meters with pulse interfaces. The utility model adopts different collectors for meters with different interfaces. After the corresponding level conversion, the Mbus remote water meter is processed by the corresponding CPU by software, and then the processed data is modulated to 120K carrier frequency for transmission through carrier technology , It solves different types of meters, meters with different interfaces, Mbus remote water meters share the same communication bus, and realizes the same system to remotely and centrally copy meters with different interfaces.

1. Technical field of Mbus remote water meter

The utility model relates to a centralized meter reading system. In particular, the Mbus remote water meter relates to a remote meter reading system based on carrier modulation technology for the MBUS interface heating meter and pulse interface water meter.

2. Features of Mbus remote water meter:

1. Passive transmission. Mbus remote water meter can output ideal square wave signal without power supply, and the long-distance transmission distance can reach one kilometer.

2. The signal transmission is accurate. The patented Mbus remote water meter self-holding switch structure ensures that the remote meter has a self-holding function, and overcomes the shortcomings of false signal transmission due to the vibration of critical points such as water hammer. The signal transmission is accurate and can ensure that the signal is error-free for millions of times.

3. Anti-magnetic. The Mbus remote water meter uses a stainless steel case and a shielding layer, which can effectively prevent magnetic field interference and prevent users from stealing water.

4. It has short-line and broken-line detection functions. Monitor users' abnormal water use status in a timely manner.

5. Strong adaptability to the system. The internal circuit can be designed according to the requirements of the Mbus remote water meter collection system, which can easily adapt to various meter reading systems; each switch can be designed to correspond to 0.001m3, 0.01m3, 0.1m3, and 1m3 water according to user needs.

6. Sealing and anti-theft. The remote meter adopts a fully sealed structure, which is moisture-proof and waterproof; regardless of whether the remote meter is connected directly or reversely, the Mbus remote water meter can accumulate normally according to the actual water consumption, eliminating the phenomenon of reverse connection of the water meter.

7. Strong versatility. The size of Mbus remote water meter is the same as that of mechanical civil water meter.

8. Long service life. The whole remote transmission expresses the life of ordinary water meters, and the remote transmission part of Mbus remote water meters can be used for ten years.

3. Technical parameters of Mbus remote water meter

1. The maximum contact power is 10W.

2. The maximum switching voltage of Mbus remote water meter is DC100V.

3. The maximum switching current is 0.5A

4. Mbus remote water meter operating temperature: cold water meter: 0-40℃ hot water meter: 0-90℃;

5. Each switch value can be set to 0.001, 0.01, 0.1, 1m3/pulse (1) according to user needs.

6. Indication error:

a. Mbus remote water meter from the low zone including the minimum flow and excluding the boundary flow: ±5%

b. From the high area including the boundary flow to the overload flow: ±2%

Nominal pressure of Mbus remote water meter: ≤1.0Mpa

Pressure loss: ≤0.1Mpa

4. Background technology of Mbus remote water meter

With the rapid development of my country’s economy, Mbus remote water meters adapt to the needs of social informatization and economic internationalization. Many smart buildings have emerged in my country, such as smart communities and smart villas. Correspondingly, these smart communities and building water meters , Mbus remote water meters generally use cassette meters or remote collective reading systems. However, if the cassette meter fails in use, it will not be detected in time, and the Mbus remote water meter will cause losses to the energy provider. The use of remote collective reading system can overcome the above-mentioned shortcomings of cassette meters, but the remote collective reading system used by Mbus remote water meters generally performs collective reading for a single meter or meters with the same type of interface. However, for the Mbus remote water meter and other interface meters to be mixed into a remote centralized meter reading system, sharing the communication bus, its Mbus remote water meter technology is very difficult to achieve.

5. Mbus remote water meter invention content

The technical problem to be solved by this Mbus remote water meter is to provide a remote meter reading system that can solve different types of meters, meters with different interfaces, and share the same communication bus based on carrier modulation technology for MBUS interface heating meters and pulse interface water meters. .

The technical scheme adopted by this Mbus remote water meter is: a remote meter reading system for heating meters with MBUS interface and water meters with pulse interface, including a Mbus remote water meter control center and a user terminal that communicates with the control center through a communication bus. Mbus remote The control center of the water meter includes a PC management machine and a communication controller, and the PC management machine is connected to the communication bus through the communication controller; the user terminal of the Mbus remote water meter includes a plurality of heating meter collectors and Multiple water meter collectors with the same structure. One end of each heating meter collector is connected to the communication bus, and the other end of the Mbus remote water meter is connected to multiple heating meters with MBUS interfaces. Each of the Mbus remote water meters has a water meter collector. The output terminal is connected to the communication bus, and the input terminal is connected to multiple water meters with pulse interfaces.