CN204242390U - A kind of M-BUS main frame receiving and dispatching mechanism module - Google Patents
A kind of M-BUS main frame receiving and dispatching mechanism module Download PDFInfo
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- CN204242390U CN204242390U CN201420711781.0U CN201420711781U CN204242390U CN 204242390 U CN204242390 U CN 204242390U CN 201420711781 U CN201420711781 U CN 201420711781U CN 204242390 U CN204242390 U CN 204242390U
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Abstract
The utility model relates to a kind of M-BUS main frame receiving and dispatching mechanism module; be arranged between gauging table and controller; this module comprises and is connected to gauging table and exports bus short circuit protection circuit module on M-BUS, export M-BUS be connected with gauging table; gather meter data; and send accepting circuit module, accepting controller instruction by TXD of information to controller by RXD, and the transtation mission circuit module be connected with gauging table by M-BUS and provide the power module of electric energy for whole main frame receiving and dispatching mechanism module.The utility model achieves the object of M-BUS voltage modulated, circuit can drive up to a hundred pieces of loads, the garble problem that cancellation simultaneously causes because of current fluctuation in M-BUS bus, make communication more stable, reliability is high, the circuit of the utility model design is simple, cost is low, and circuit power consumption is minimum, is applicable to universal use.
Description
Technical field
The utility model belongs to digital metering table data acquisition equipment technical field, particularly a kind of M-BUS main frame receiving and dispatching mechanism module.
Background technology
Along with the high speed development of infotech, data acquisition changes from the form of manually carrying out one by one checking meter to the direction of robotization, centralization, long-range, proposes the new demand of managing concentratedly customer meter data simultaneously.Therefore the application based on M-BUS bus remote meter reading is more and more extensive.M-BUS, full name Meter-BUS are a kind of European standard buses of two-wire system.It is a kind of special master-slave mode half-duplex bus for consumption measuring instrument transmission design data, adopts the communication mode of caller/response, and after the main website being namely only in Central Position sends inquiry, the slave station of correspondence could to master station transmission data.M-BUS bus communication principle is: main frame to when sending data from machine, employing be voltage modulated, concrete mode changes bus voltage and bus current remains unchanged.When main frame sends data ' 1 ', the voltage in M-BUS bus is about 36V, and when sending data ' 0 ', M-BUS bus voltage reduces 12V, is about 24V.From machine to main frame send data time, employing be current-modulation.When sending data ' 1 ' from machine, electric current in M-BUS bus is about 1.5mA, when sending data ' 0 ' from machine, the electric current in M-BUS bus increases by 11 to 20mA, and main frame is by causing the changing value identification data of sampled voltage because bus current changes.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and proposes a kind of M-BUS main frame receiving and dispatching mechanism module.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of M-BUS main frame receiving and dispatching mechanism module; be arranged between gauging table and controller; this module comprises and is connected to gauging table and exports bus short circuit protection circuit module on M-BUS, export M-BUS be connected with gauging table; gather meter data; and send accepting circuit module, accepting controller instruction by TXD of information to controller by RXD, and the transtation mission circuit module be connected with gauging table by M-BUS and provide the power module of electric energy for whole main frame receiving and dispatching mechanism module.
And, described transtation mission circuit module, comprise the optocoupler U2 exporting with controller single-chip microcomputer and be connected, be connected to+5V and optocoupler U2 export between resistance R1, being connected to optocoupler U2 exports between two P-MOS pipes, comprise by triode Q1, triode Q2 and triode Q3 is formed, in order to the control circuit of control P-MOS pipe U1 and the U3 conducting of P-MOS pipe or cut-off, the output of P-MOS pipe U1 and P-MOS pipe U3 is connected with lead-out terminal P1, switching when utilizing this circuit realiration controller to send data in M-BUS bus between voltage 24-40, meet the requirement of voltage modulated during M-BUS bus communication.
And; described bus short circuit protection circuit module, comprises the LED 1 of the comparer U6 of voltage on M-BUS terminals P 2, the sampling resistor Rs1 connected and sampling resistor Rs2, collection resistance Rs2, the triode Q5 by the control of comparer U6 output level, grand the relay U8 by the control of triode Q5 state and embodiment M-BUS state.
And, when gauging table in M-BUS bus sends data, electric current in M-BUS bus produces voltage through sampling resistor Rs, this voltage enters and describedly accepts circuit module, sampled voltage enters rear circuit and is divided into two-way, one tunnel is through diode D3, resistance R14 and resistance R15, the voltage of comparer U5 negative terminal is the dividing potential drop of sampled voltage on resistance R14, another road is through diode D4, resistance R17 and resistance R18, the voltage of comparer U5 anode is the dividing potential drop of sampled voltage on R18, the output of comparer U5 is connected with triode Q4, control conducting and the cut-off of triode Q4, the output of triode Q4 is connected with optocoupler U4, control the duty of optocoupler U4, the duty of optocoupler U4 determines that RXD is high level or low level.
And, described power module comprises a 24V Switching Power Supply and exports with 24V Switching Power Supply the LM2577 boost module and LM2596-5.0 module that are connected, described LM2596-5.0 module connects an AMS1117-3.3 module again, and power module provides+40V ,+24V ,+5V and+3.3V voltage for whole main frame receiving and dispatching mechanism module.
Advantage of the present utility model and good effect are:
(1) three partial circuits in the utility model module are simple, cost is low, may be used in the remote meter reading acquisition system of ammeter, water meter, calorimeter, have instruction and short-circuit protection during M-BUS bus short circuit.
(2) power module used in the utility model module only needs the Switching Power Supply of a 24V, so power module part is more simple, the Area comparison that power module accounts in the entire system is little.
(3) the M-BUS main frame transtation mission circuit main components of the utility model design only needs two P-MOS pipes, the conducting of two P-MOS pipes and cut-off is utilized to achieve the object of voltage modulated, circuit can drive up to a hundred pieces of loads, can drive 150 polylith calorimeters in reality test.
(4) the M-BUS main frame of the utility model design accepts circuit, can the garble problem that causes because of the fluctuation of electric current in M-BUS bus of cancellation, interference in M-BUS bus can by the parameter cancellation in configuration M-BUS receiving circuit, and then making communication more stable, reliability is more increased.
(5) the M-BUS bus short circuit protection circuit of the utility model design is simple, cost is low, only by P-MOS pipe and grand relay just can realizing circuit short circuit time fast shut-off M-BUS bus on power supply.In addition, maximum permission working current can also oneself set, and time normal operating conditions (without short circuit), circuit power consumption is minimum, has pilot lamp to indicate short-circuit condition during short circuit.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the utility model power module theory diagram;
Fig. 3 is the schematic diagram of the utility model M-BUS main frame transtation mission circuit;
Fig. 4 is the schematic diagram that the utility model M-BUS main frame accepts circuit;
Fig. 5 is the schematic diagram of the utility model M-BUS short-circuit protection circuit.
Embodiment
Implement to be further described to the utility model below in conjunction with accompanying drawing, following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of M-BUS main frame receiving and dispatching mechanism module; as shown in Figure 1; the main frame receiving and dispatching mechanism module be arranged between gauging table with controller comprises and is connected to gauging table and exports bus short circuit protection circuit module on M-BUS, export M-BUS be connected with gauging table; gather meter data; and send accepting circuit module, accepting controller instruction by TXD of information by RXD to controller; and the transtation mission circuit module be connected with gauging table by M-BUS and provide the power module of electric energy for whole main frame receiving and dispatching mechanism module
Wherein, described power module, as shown in Figure 2, described Switching Power Supply comprises a 24V Switching Power Supply and exports with 24V Switching Power Supply the LM2577 boost module and LM2596-5.0 module that are connected, and LM2596-5.0 module connects an AMS1117-3.3 module again.
Wherein, described transtation mission circuit module, as shown in Figure 3, comprise to export with controller single-chip microcomputer be connected optocoupler U2, be connected to+5V and optocoupler export between resistance R1, be connected to optocoupler and export between two P-MOS pipes, comprise and being made up of triode Q1, triode Q2 and triode Q3, in order to the control circuit of control P-MOS pipe U1 and P-MOS pipe U3 conduction and cut-off, the output of P-MOS pipe U1 and P-MOS pipe U3 is connected with lead-out terminal P1.Utilize the switching that this circuit just can realize when main frame sends data in M-BUS bus between voltage 24-40, meet the requirement of voltage modulated during M-BUS bus communication.
When single-chip microcomputer sends logic level ' 1 ', optocoupler U2 does not work, and the other end of R1 resistance is high level, now triode Q1, Q3 conducting, and triode Q2 ends.Due to triode Q1 conducting, one end of resistance R3 is through triode Q1 ground connection, and now the voltage of the grid G of P-MOS pipe U1 is 30V, and the differential pressure of source S and grid G is 10V, P-MOS pipe U1 conducting.Because triode Q2 ends, the source S of P-MOS pipe U3 and the differential pressure of grid G are almost 0V, and P-MOS pipe U3 ends, and the voltage at the P1 two ends, joint of M-BUS bus is 40V.
When single-chip microcomputer sends logic level ' 0 ', optocoupler U2 works, and the other end of R1 resistance is low level, now triode Q1, Q3 cut-off, triode Q2 conducting.Due to triode Q2 conducting, one end of resistance R9 is through triode Q2 ground connection, and now the voltage of the grid G of P-MOS pipe U3 is 14V, and the differential pressure of source S and grid G is 10V, P-MOS pipe U3 conducting.Because triode Q1 ends, the source S of P-MOS pipe U1 and the differential pressure of grid G are almost 0V, and P-MOS pipe U1 ends.The voltage at the P1 two ends, joint of M-BUS bus is 24V.
Wherein, describedly accept circuit module, as shown in Figure 4, when in M-BUS bus, gauging table sends data, electric current in M-BUS bus produces voltage through sampling resistor Rs, this voltage enters when accepting circuit and is divided into two-way, one tunnel is through diode D3, resistance R14, resistance R15, the voltage of comparer U5 negative terminal is the dividing potential drop of sampled voltage on resistance R14, another road is through diode D4, resistance R17, resistance R18, the voltage of comparer U5 anode is the dividing potential drop of sampled voltage on R18, the output of comparer U5 is connected with triode Q4, control conducting and the cut-off of triode Q4, the output of triode Q4 is connected with optocoupler U4, control the duty of optocoupler U4, the duty of optocoupler U4 determines that RXD is high level or low level.
During stable state, the voltage of comparer U2 negative terminal is greater than positive terminal voltage, and comparer U5 exports as low level, and triode Q4 ends, and optocoupler U4 does not work, and now RXD place is high level, and when gauging table transmission data ' 1 ', RXD place maintains high level.Electric current when gauging table transmission data ' 0 ' in M-BUS bus increases by 11 to 20mA on original basis, and after sampling resistor, voltage signal increases.Now the voltage instantaneous of comparer anode increases, the voltage of comparer negative terminal is through resistance R14, charge to electric capacity C1, negative terminal voltage is increased gradually, between charge period, the positive terminal voltage of comparer is greater than negative terminal voltage, comparer U5 exports high level, triode Q4, optocoupler U4 work, and RXD place is low level.So realize by the discharge and recharge of comparer negative terminal to electric capacity the switching that M-BUS main frame when gauging table sends data accepts logic level ' 0 ' and ' 1 '.
Wherein, described bus short circuit protection circuit module; as shown in Figure 5, the LED 1 of the comparer U6 of voltage on M-BUS terminals P 2, the sampling resistor Rs1 connected and resistance Rs2, collection resistance Rs2, the triode Q5 by the control of comparer U6 output level, grand the relay U8 by the control of triode Q5 state and embodiment M-BUS state is comprised.
Sampling resistor is divided into two resistant series, and is taken at voltage on sampling resistor Rs2 as the standard judging the whether short circuit of M-BUS bus.Resistance when M-BUS bus normal (without short circuit, No-mistake Principle) on sampling resistor Rs2 is very little, now comparer output low level, triode Q5 ends, grand relay U8 be not owing to connecting, so grand relay U8 controls contact connect normally closed interlock all the time, resistance R24 through the normally closed interlock of grand relay and ground connection, the conducting of P-MOS pipe.The voltage that transtation mission circuit produces is powered to M-BUS, and LED 1 does not work.Voltage when short circuit in M-BUS bus or overload on sampling resistor Rs2 is larger, comparer exports high level, triode Q5 conducting, grand relay U8 connects, control contact connection normally closed interlock and normally open contact disconnects, P-MOS pipe U7 ends, and the voltage that transtation mission circuit produces is disconnected by P-MOS pipe U7 and M-BUS bus and stops power supply, and LED 1 is bright.The voltage produced owing to sending resistance is not powered to M-BUS, and the voltage of sampling resistor Rs2 can become rapidly very little, comparer U6 output low level, and triode Q5 ends.But because grand relay U8 connects always, so P-MOS pipe U7 ends always, LED 1 is bright instruction M-BUS bus short circuit state always.
Claims (5)
1. a M-BUS main frame receiving and dispatching mechanism module; be arranged between gauging table and controller; it is characterized in that: this module comprises and is connected to gauging table and exports bus short circuit protection circuit module on M-BUS, export M-BUS be connected with gauging table; gather meter data; and send accepting circuit module, accepting controller instruction by TXD of information to controller by RXD, and the transtation mission circuit module be connected with gauging table by M-BUS and provide the power module of electric energy for whole main frame receiving and dispatching mechanism module.
2. M-BUS main frame receiving and dispatching mechanism module according to claim 1, it is characterized in that: described transtation mission circuit module, comprise the optocoupler U2 exporting with controller single-chip microcomputer and be connected, be connected to+5V and optocoupler U2 export between resistance R1, being connected to optocoupler U2 exports between two P-MOS pipes, comprise by triode Q1, triode Q2 and triode Q3 is formed, in order to the control circuit of control P-MOS pipe U1 and the U3 conducting of P-MOS pipe or cut-off, the output of P-MOS pipe U1 and P-MOS pipe U3 is connected with lead-out terminal P1, switching when utilizing this circuit realiration controller to send data in M-BUS bus between voltage 24-40, meet the requirement of voltage modulated during M-BUS bus communication.
3. M-BUS main frame receiving and dispatching mechanism module according to claim 1; it is characterized in that: described bus short circuit protection circuit module, comprise the LED 1 of the comparer U6 of voltage on M-BUS terminals P 2, the sampling resistor Rs1 connected and sampling resistor Rs2, collection resistance Rs2, the triode Q5 by the control of comparer U6 output level, grand the relay U8 by the control of triode Q5 state and embodiment M-BUS state.
4. M-BUS main frame receiving and dispatching mechanism module according to claim 1, it is characterized in that: when gauging table in M-BUS bus sends data, electric current in M-BUS bus produces voltage through sampling resistor Rs, this voltage enters and describedly accepts circuit module, sampled voltage enters rear circuit and is divided into two-way, one tunnel is through diode D3, resistance R14 and resistance R15, the voltage of comparer U5 negative terminal is the dividing potential drop of sampled voltage on resistance R14, another road is through diode D4, resistance R17 and resistance R18, the voltage of comparer U5 anode is the dividing potential drop of sampled voltage on R18, the output of comparer U5 is connected with triode Q4, control conducting and the cut-off of triode Q4, the output of triode Q4 is connected with optocoupler U4, control the duty of optocoupler U4, the duty of optocoupler U4 determines that RXD is high level or low level.
5. M-BUS main frame receiving and dispatching mechanism module according to claim 1, it is characterized in that: described power module comprises a 24V Switching Power Supply and exports with 24V Switching Power Supply the LM2577 boost module and LM2596-5.0 module that are connected, described LM2596-5.0 module connects an AMS1117-3.3 module again, and power module provides+40V ,+24V ,+5V and+3.3V voltage for whole main frame receiving and dispatching mechanism module.
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| CN201420711781.0U CN204242390U (en) | 2014-11-24 | 2014-11-24 | A kind of M-BUS main frame receiving and dispatching mechanism module |
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| CN201420711781.0U CN204242390U (en) | 2014-11-24 | 2014-11-24 | A kind of M-BUS main frame receiving and dispatching mechanism module |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901682A (en) * | 2015-05-22 | 2015-09-09 | 成都前锋电子仪器有限责任公司 | M-Bus host circuit |
| CN106209543A (en) * | 2016-07-14 | 2016-12-07 | 珠海优特电力科技股份有限公司 | Bidirectional bus communication circuit and communication method |
| CN106375170A (en) * | 2016-08-26 | 2017-02-01 | 宁波三星医疗电气股份有限公司 | Mbus master node receiving circuit |
| CN107370518A (en) * | 2017-07-24 | 2017-11-21 | 深圳安德勒电气科技有限公司 | A kind of two-wire system constant-current source carrier communication bidirectional transmit-receive circuit |
| CN107452192A (en) * | 2017-08-16 | 2017-12-08 | 南京天溯自动化控制系统有限公司 | M BUS Communication processing systems with adaptation function |
| CN107534594A (en) * | 2015-05-26 | 2018-01-02 | 日立汽车系统株式会社 | Communicator and communication system |
| CN107797957A (en) * | 2017-11-17 | 2018-03-13 | 华立科技股份有限公司 | Inexpensive M BUS host communication circuits |
| CN107833452A (en) * | 2017-11-15 | 2018-03-23 | 安徽南瑞中天电力电子有限公司 | A kind of strong type of load capacity III of MBUS buses, IV type collector |
| CN109360404A (en) * | 2018-12-13 | 2019-02-19 | 湖南常德牌水表制造有限公司 | A kind of M-Bus main website multi-channel intelligent meter reading remote transmission device and method |
| CN109754591A (en) * | 2018-12-21 | 2019-05-14 | 湖南常德牌水表制造有限公司 | A kind of kilowatt meter reading-out system and meter register method |
| CN109903546A (en) * | 2019-04-02 | 2019-06-18 | 国网江苏省电力有限公司宜兴市供电分公司 | A kind of M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device |
| CN111223286A (en) * | 2019-10-18 | 2020-06-02 | 北京研华兴业电子科技有限公司 | Meter BUS-based data acquisition device and method |
| WO2022188361A1 (en) * | 2021-03-12 | 2022-09-15 | 威胜集团有限公司 | Mbus host sending circuit, bus system and signal sending method |
-
2014
- 2014-11-24 CN CN201420711781.0U patent/CN204242390U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901682A (en) * | 2015-05-22 | 2015-09-09 | 成都前锋电子仪器有限责任公司 | M-Bus host circuit |
| CN107534594A (en) * | 2015-05-26 | 2018-01-02 | 日立汽车系统株式会社 | Communicator and communication system |
| CN107534594B (en) * | 2015-05-26 | 2020-07-24 | 日立汽车系统株式会社 | Communication device and communication system |
| US10581622B2 (en) | 2015-05-26 | 2020-03-03 | Hitachi Automotive Systems, Ltd. | Communication device and communication system |
| CN106209543B (en) * | 2016-07-14 | 2019-07-12 | 珠海优特物联科技有限公司 | A kind of bidirectional bus telecommunication circuit and communication means |
| CN106209543A (en) * | 2016-07-14 | 2016-12-07 | 珠海优特电力科技股份有限公司 | Bidirectional bus communication circuit and communication method |
| CN106375170A (en) * | 2016-08-26 | 2017-02-01 | 宁波三星医疗电气股份有限公司 | Mbus master node receiving circuit |
| CN107370518A (en) * | 2017-07-24 | 2017-11-21 | 深圳安德勒电气科技有限公司 | A kind of two-wire system constant-current source carrier communication bidirectional transmit-receive circuit |
| CN107452192A (en) * | 2017-08-16 | 2017-12-08 | 南京天溯自动化控制系统有限公司 | M BUS Communication processing systems with adaptation function |
| CN107833452A (en) * | 2017-11-15 | 2018-03-23 | 安徽南瑞中天电力电子有限公司 | A kind of strong type of load capacity III of MBUS buses, IV type collector |
| CN107797957A (en) * | 2017-11-17 | 2018-03-13 | 华立科技股份有限公司 | Inexpensive M BUS host communication circuits |
| CN107797957B (en) * | 2017-11-17 | 2024-01-23 | 华立科技股份有限公司 | Low-cost M-BUS host communication circuit |
| CN109360404A (en) * | 2018-12-13 | 2019-02-19 | 湖南常德牌水表制造有限公司 | A kind of M-Bus main website multi-channel intelligent meter reading remote transmission device and method |
| CN109360404B (en) * | 2018-12-13 | 2023-08-15 | 湖南常德牌水表制造有限公司 | Multichannel intelligent meter reading remote transmission device and method for M-Bus master station |
| CN109754591A (en) * | 2018-12-21 | 2019-05-14 | 湖南常德牌水表制造有限公司 | A kind of kilowatt meter reading-out system and meter register method |
| CN109903546A (en) * | 2019-04-02 | 2019-06-18 | 国网江苏省电力有限公司宜兴市供电分公司 | A kind of M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device |
| CN111223286A (en) * | 2019-10-18 | 2020-06-02 | 北京研华兴业电子科技有限公司 | Meter BUS-based data acquisition device and method |
| WO2022188361A1 (en) * | 2021-03-12 | 2022-09-15 | 威胜集团有限公司 | Mbus host sending circuit, bus system and signal sending method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151124 |