CN202093387U

CN202093387U - Remote control device based on remote meter reading system (M-bus) bus

Info

Publication number: CN202093387U
Application number: CN2011201965634U
Authority: CN
Inventors: 吴兴中
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-10
Filing date: 2011-06-10
Publication date: 2011-12-28
Anticipated expiration: 2021-06-10

Abstract

A remote control device based on a remote meter reading system (M-bus) bus comprises a PC terminal manager, an M-bus concentrator, an M-bus repeater, a plurality of heat and cold scales, and M-bus bus level conversion modules and valve controllers corresponding with the scales. The output end of the PC terminal manger is connected with the input end of the M-bus concentrator, the output end of the M-bus concentrator is connected with the input end of the M-bus repeater, output ends of the M-bus repeater are respectively connected with the M-bus bus level conversion modules, the M-bus bus level conversion modules are respectively connected with the corresponding scales, and the output ends of the scales are respectively connected with the corresponding valve controllers. By adopting the M-BUS remote control, the problem of data disorder and instability caused by using an IC card as a data transfer storage medium is effectively solved, and the device is good in stability and high in reliability, is convenient and practical.

Description

Remote control based on long-distance meter-reading system M-bus bus

Technical field

The utility model relates to a kind of bus remote control, the device that the hot and cold scale of pre-payment ultrasound wave is controlled especially, specifically a kind of bus remote control based on long-distance meter-reading system M-bus.

Background technology

At present, heat supply, cold meterage are reformed after carry out in the whole nation, the heat supply in vast northern area and middle part, and simultaneously, the metering of the cooling of southern area can reach the market capacity of nearly hundred billion yuan in covers up to a million with the annual requirement of calorimeter.

Traditional calorimeter has just solved the problem of record data, for thorny control problem, central heating, unified charge has all brought very big inconvenience for heat supply department and user, especially under the quite nervous situation of the current energy, how to solve charge dispersion, difficult charge, the difficult problem of paying the fees, the management of heat supply system and charge reform are imperative especially, adopt pre-payment to make heat supply department conveniently charge, the user also can adjust the discharge of heating installation according to the needs of oneself, unwanted the time, turn off heating installation, reduce expenses.Also have, multi-form IC card thermal flowmeter has appearred in recent years both at home and abroad successively, wherein traditional Contact Type Ic Card, exist and make and use inconvenience, anti-close performance is bad, the deficiency that serviceable life is short etc., and the whole IC-card heat of influence, the use of cold table, cause the Fare Collection System instability, problems such as the difficult eliminating of fault.

Summary of the invention

The purpose of this utility model is at traditional Contact Type Ic Card, exists to make and use inconvenience, and anti-close performance is bad, and the problem that serviceable life is short proposes a kind of bus remote control based on long-distance meter-reading system M-bus.

The technical solution of the utility model is:

A kind of remote control based on long-distance meter-reading system M--bus bus, it comprises: PC terminal management device, the M--bus concentrator, the M--bus repeater, N heat, the cold table, and it is a plurality of and hot, M--bus bus level modular converter and valve positioner that cold table quantity is identical, the control signal output ends of described PC terminal management device links to each other with the signal input end of M--bus concentrator, the control signal output ends of M--bus concentrator links to each other with the signal input end of M--bus repeater, each control signal output ends of M--bus repeater links to each other with a plurality of M--bus bus level modular converters respectively, each M--bus bus level modular converter respectively with corresponding heat, the cold epiphase connects, each heat, the output of cold table connects the corresponding valve controller respectively.

The control signal output ends of PC terminal management device of the present utility model links to each other with the signal input end of M--bus concentrator by the RS232 transmission line.

M--bus bus level modular converter of the present utility model is made of voltage transitions chip U1 and peripheral circuit.

Valve positioner of the present utility model is made of valve and actuator.

The beneficial effects of the utility model:

The utility model adopts the M--bus Long-distance Control, can effectively solve IC-card and data entanglement problem of unstable occur as the data relay storage medium.Adopt the M--bus Long-distance Control can realize directly controlling the data management function of ultrasonic calorimeter, will make full use of the many characteristics of PC processing events ability powerful by PC.The M--bus circuit all is in closed condition at ordinary times, and having only the user to pay dues is just to open.M--bus adopts 220V civil power (having the empty battery backup power source of 48V) power supply effectively to save the battery power consumption of ultrasonic calorimeter simultaneously.Whether the PC terminal can also have fault its intelligent terminal to occur more embodying by the used customer meter of timing scan simultaneously.

The heat that the utility model adopts, the technical indicator of cold table are as follows:

1. complete machine quiescent current＜10uA.

2. complete machine dynamic current＜100mA.

3. complete machine average current＜30uA.

4. temperature measurement accuracy: 0.01 ℃

5. flow measurement precision meets the 2 class precision requirements of national calorimeter industry standard CJ128-2007.

6. flow measurement range: (0.05 – 7.0) m3/h.

7. temperature range: (4 – 95) ℃.

8. temperature range: (3-90) K.

9. maximum working pressure (MWP): 1.6MPa.

Description of drawings

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is the circuit diagram of M--bus bus level modular converter of the present utility model.

Fig. 3 is the circuit diagram of valve positioner of the present utility model.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

As shown in Figure 1, a kind of bus remote control based on long-distance meter-reading system M--bus, it comprises PC terminal management device (employing PC), M--bus concentrator (model can be BCZJ--2), M--bus repeater (model can be BCJZ--3), N heat (cold) scale, and N and identical M--bus bus level modular converter and the valve positioner of hot (cold) scale quantity, the control signal output ends of described PC terminal management device links to each other with the signal input end of M--bus concentrator by the RS232 transmission line, the control signal output ends of M--bus concentrator links to each other with the signal input end of M--bus repeater, each control signal output ends of M--bus repeater links to each other with a plurality of M--bus bus level modular converters respectively, each M--bus bus level modular converter respectively with corresponding heat, the cold epiphase connects, each heat, the output of cold table connects the corresponding valve controller respectively.

PC links to each other with the M--bus interface by the RS232 port, and M--bus concentrator thermotropism, cold table are bus voltage (36V) when sending data " 1 ", and bus voltage is (24 V) when sending data " 0 ".Heat, cold table are confirmed the data that receive by the variation of judging the high low-voltage of bus.

Heat, cold table send by changing the M--bus bus when the M--bus concentrator sends confirmation signal.Bus voltage (36V) the drain bus electric current when heat, cold table send " 1 " that remains unchanged be (＜1.5) mA, and the drain bus electric current is (11-20) mA when heat, cold table transmission data " 0 ".The M--bus concentrator is confirmed the data that receive by the variation that detects electric current.

Because calorimeter adopts is that therefore the powered battery of 3.6V need be the Transistor-Transistor Logic level signal of 3.6V with the M--bus conversion of signals.This just needs a M--bus bus level modular converter.As shown in Figure 2, M--bus bus level modular converter can be TSS721A by voltage transitions chip U1(model) and the peripheral circuit formation.

Valve positioner of the present utility model is made of valve and actuator, and as shown in Figure 3, T06 and W04 form current driving circuit.

Valve sends control signal by the I/O pin of MCU of heat (cold) scale, and (P6.6 P6.7) controls the both forward and reverse directions running of DC micromotor, to reach out valve or to close the purpose of valve.Whether MCU also will real-time detection valve turns round and puts in place when driving valve or closing valve, and by P6.4, the P6.5 pin detects low level and thinks to open or close and put in place.

In order to increase the driving force of DC micromotor, except increasing drive current, also will mechanically take the principle of gear change.Gear ratio is 1:1000.Be immersed in the problem the design of easily getting rusty in the water for a long time and take copper to mould accessory structure combining mode in order to prevent to control ball valve, promptly the ball valve that rotates adopts casting in bronze to make, and the department's clothes pad in the valve pocket adopts high temperature resistant hard plastic injection molding to form.Also the time switch valve is once turbid with the rust of eliminating on the ball valve weekly for MCU simultaneously.

During concrete enforcement:

PC terminal management device links to each other with the M--bus concentrator by PC RS232 port, and the M--bus concentrator is opened up structure by the repeater benefit and linked to each other with regional each interior ultrasonic calorimeter.Thereby can realize the LAN of PC Long-distance Control instrument.

When the user need arrive PC terminal management department and handles the subscriber data typing and pay pre-cost of use, PC just passes through M--bus bus remote transmission load value data in ultrasonic calorimeter, and ultrasonic calorimeter determines whether Open valve by the value of judging surplus heat after receiving load value data.Instrument will be sent automatically and close valve signal by the valve positioner valve-off when surplus heat in the customer meter is not enough, and the user need arrive and can continue after administrative authority continues to pay dues to use.

The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.

Claims

1. remote control based on long-distance meter-reading system M--bus bus, it is characterized in that it comprises: PC terminal management device, the M--bus concentrator, the M--bus repeater, N heat, the cold table, and it is a plurality of and hot, M--bus bus level modular converter and valve positioner that cold table quantity is identical, the control signal output ends of described PC terminal management device links to each other with the signal input end of M--bus concentrator, the control signal output ends of M--bus concentrator links to each other with the signal input end of M--bus repeater, each control signal output ends of M--bus repeater links to each other with a plurality of M--bus bus level modular converters respectively, each M--bus bus level modular converter respectively with corresponding heat, the cold epiphase connects, each heat, the output of cold table connects the corresponding valve controller respectively.

2. the remote control based on long-distance meter-reading system M--bus bus according to claim 1 is characterized in that the control signal output ends of described PC terminal management device links to each other with the signal input end of M--bus concentrator by the RS232 transmission line.

3. the remote control based on long-distance meter-reading system M--bus bus according to claim 1 is characterized in that described M--bus bus level modular converter is made of voltage transitions chip U1 and peripheral circuit.

4. the remote control based on long-distance meter-reading system M--bus bus according to claim 1 is characterized in that described valve positioner comprises valve and actuator.