CN209708300U - A kind of M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device - Google Patents
A kind of M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device Download PDFInfo
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- CN209708300U CN209708300U CN201920438126.5U CN201920438126U CN209708300U CN 209708300 U CN209708300 U CN 209708300U CN 201920438126 U CN201920438126 U CN 201920438126U CN 209708300 U CN209708300 U CN 209708300U
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Abstract
The utility model relates to automatic data collection technical fields, and in particular to a kind of M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device.The M-BUS circuit includes: data transmitting line, data receiver circuit and protection circuit；Data transmitting line, the data transmitting line include: power control circuit, over-current detection circuit and external bus circuit；The output end Mbt of the input terminal connection MCU control unit of the power control circuit, the output end of the power control circuit connects the input terminal of external bus circuit, the first output end and second output terminal of the external bus circuit are separately connected the first end AO and second end BO of water meter bus, the test side Dec of the output end connection MCU control unit of the over-current detection circuit, input terminal connect the external bus circuit.The multi-mode communication multi-protocols water meter acquiring device includes: uplink communication unit, downlink communication unit and the M-BUS circuit.
Description
Technical field
The utility model relates to automatic data collection technical fields, and in particular to a kind of M-BUS circuit and multimode are logical
Believe multi-protocols water meter acquiring device.
Background technique
The system that country-driven four table concentrates copy reading water meter includes: four-meter collector, water meter acquiring device, water meter level Four frame
Structure.Communication between concentrator and water meter acquiring device mostly uses greatly carrier wave, micro power radio communication.Water meter acquiring device and water meter it
Between communicated using RS-485 M-BUS interface.
Existing water meter acquiring device generally has the disadvantage that: existing water meter teletransmission data acquisition equipment is all by water mostly
The directly mating offer of man, Watch Factory, downlink communication generally only have a RS-485 or M-BUS, uplink communication generally only have RS-485 or
Person GPRS；Generally only support the water meter communication protocol of a specific water meter manufacturer；However the water meter of each producer acquisition equipment is outer
Shape, installation and deployment, maintenance service are all different, to bring many inconvenience to on-site installation and maintenance.
Summary of the invention
In order to solve the deficiencies in the prior art, the utility model provides a kind of M-BUS circuit and multi-mode communication
Multi-protocols water meter acquiring device.
According to technical solution provided by the utility model, M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device.Make
A kind of M-BUS circuit is provided for the first aspect of the utility model, and the M-BUS circuit includes: that data transmitting line, data connect
Receive circuit and protection circuit；
Data transmitting line, the data transmitting line include: power control circuit, over-current detection circuit and external bus
Circuit；The power control circuit input terminal connection MCU control unit output end Mbt, the power control circuit it is defeated
Outlet connects the input terminal of external bus circuit, and the first output end and second output terminal of the external bus circuit are separately connected
The first end AO and second end BO of water meter bus, the test side of the output end connection MCU control unit of the over-current detection circuit
Dec, input terminal connect the external bus circuit.
Further, the power control circuit includes power supply chip U1 and voltage-regulating circuit；
The adjustment end of the power supply chip U1 connects voltage-regulating circuit, and the voltage-regulating circuit includes first resistor
R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, first diode D1, first capacitor C1, the one or three
Pole pipe Q1；The adjustment end of power supply chip U1 connects one end of the first resistor R1, one end of second resistance R2,3rd resistor R3
One end and first capacitor C1 one end, the other end of second resistance R2 connects the collector of the first triode Q1, described first
The base stage of triode Q1 connects one end of the 4th resistance R4 and one end of the 5th resistance R5, and the other end of the 4th resistance R4 connects
The other end for meeting the output end Mbt, the 5th resistance R5 of MCU control unit connects the emitter of the first triode Q1, first
The other end of capacitor C1, the other end of 3rd resistor R3 and ground connection.
Further, the over-current detection circuit include optocoupler P1, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8,
9th resistance R9, zener diode D2, the second capacitor C2；One end of the 7th resistance R7 is connected with one end of the 9th resistance R9
First output end of data transmitting line, the electric current on first end AO for acquiring water meter bus is to the over-current detection electricity
Road；The anode of the other end connection optocoupler P1 primary side of the 9th resistance R9 and the anode of zener diode D2, the pressure stabilizing two
The cathode of pole pipe D2 connects one end of the 6th resistance R6, the other end connection power control circuit output of the 6th resistance R6
End；The test side Dec of the optocoupler P1 pair side collector connection MCU control unit.
Further, the data receiver circuit includes: the tenth resistance R10, eleventh resistor R11, twelfth resistor
R12, thirteenth resistor R13, the 14th resistance R14, the 4th diode D4, zener diode D6, third capacitor C3, the 4th capacitor
C4, the 5th capacitor C5 and amplifier U2；
The input terminal of the data receiver circuit is the cathode of zener diode D6, the input terminal connection of data receiver circuit
The anode of the first end AO of water meter bus, zener diode D6 connect one end of the anode of the 4th diode D4, the tenth resistance R10
With one end of the 14th resistance R14, one end of the cathode connection eleventh resistor R11 of the 4th diode D4, the 11st electricity
The reverse input end of the other end connection amplifier U2 of R11 is hindered, the other end of the tenth resistance R10 connects the forward direction of amplifier U2
Input terminal；The both ends of the 4th capacitor C4 be separately connected the tenth resistance R10 the other end and eleventh resistor R11 it is another
End, the both ends of the 5th capacitor C5 are separately connected the other end of eleventh resistor R11 and the other end of the 14th resistance R14, described
The both ends of twelfth resistor R12 are separately connected the both ends of the 5th capacitor C5, the other end ground connection of the 14th resistance R14；It is described to put
The output end of big device U2 is the output end of the data receiver circuit, connects the input terminal Mbus of the MCU control unit.
Further, the protection circuit includes: relay J1, the 15th resistance R15, the 16th resistance R16, the 17th
Resistance R17, the 18th resistance R18, the 5th diode D5, second triode Q2；
The base stage of the second triode Q2 connects one end of the 15th resistance R15, and the other end of the 15th resistance R15 connects
Meet the protection control terminal Jdq of MCU control unit, the both ends of the 16th resistance R16 be separately connected the second triode Q2 base stage and
Emitter；The other end of one end of the collector connection relay J1 coil of the second triode Q2, the relay J1 coil connects
Connect one end of the 17th resistance R17, one end of the 18th resistance R18 of the other end of the 17th resistance R17, the relay J1 line
The 5th diode D5 is also connected between the both ends of circle；
First output end of the first common end a1 connection data transmitting line of the relay J1, the second of relay J1
The second output terminal of common end a2 connection data transmitting line, the first normal-closed end b1 connection water meter bus of the relay J1
The second normal-closed end b2 connection water meter bus second end BO of one end AO, the relay J1.
As the second aspect of the utility model, a kind of multi-mode communication multi-protocols water meter acquiring device is provided, the multimode is logical
Believe that multi-protocols water meter acquiring device includes:
Uplink communication unit, the uplink communication unit is connect by serial port transceiver circuit with MCU control unit, with rear end
Main website carries out data interaction；
Downlink communication unit, the downlink communication unit are connect by serial port transceiver circuit with MCU control unit, Xiang Shuibiao
Bus carries out data interaction；The downlink communication unit includes M-BUS circuit described in the utility model first aspect.
Further, the uplink communication unit uses 470 wireless communication modules, bandwidth carrier module, narrowband carrier mould
One of block, 4G communication module, CDMA module, GPRS module, NB-IOT module and ethernet module are a variety of.
Further, the downlink communication unit further includes RS485 circuit.
Further, the serial port transceiver circuit can use Uart interface or PHY Ethernet interface.
From the above as can be seen that M-BUS circuit and multi-mode communication multi-protocols water meter provided by the utility model is adopted
Storage has following advantages compared with prior art: uplink and meanwhile support carrier band carrier wave, bandwidth carrier, micropower wireless mode
It is communicated with concentrator, while supporting 4G, GPRS, CDMA, Ethernet, NB-IOT communication and background communication, it can basis
Site environment disposes different communication framework；And can control switching on and off for water meter bus, realize relay when not meter reading
Device J1 cuts off the connection between interior external bus, and water meter is in non-charged state.Only relay is controlled when meter reading to connect
The port of water meter bus and water meter bus port disconnect after the completion of meter reading, and the time that can reduce water meter work in this way extends work
Make the service life.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model.
Fig. 2 is the structural block diagram of the utility model data transmitting line.
Fig. 3 is the circuit diagram of the utility model data transmitting line.
Fig. 4 is the circuit diagram of the utility model data receiver circuit.
Fig. 5 is the circuit diagram that the utility model protects circuit.
100. data transmitting line, 110. power control circuits, 111. voltage-regulating circuits, 120. over-current detections electricity
Road, 130. connect external bus circuit, 200. data receiver circuits, 300. protection circuits.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to attached drawing, the utility model is further described.Wherein identical components are presented with like reference characters.It needs
Illustrate, word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to the side in attached drawing
To.The word "inner" used and "outside" refer respectively to the direction towards or away from geometric center of specific component.
As the utility model in a first aspect, as shown in Fig. 3 ~ Fig. 5, a kind of M-BUS circuit, the M-BUS electricity are provided
Road includes: data transmitting line 100, data receiver circuit 200 and protection circuit 300；
The data transmitting line 100 connects MCU control unit, carries out data interaction for MCU control unit, according to
The control signal of MCU control unit sends data acquisition command to each water meter bus, and acquires the current signal of water meter bus
It exports and gives MCU control unit unit, MCU control unit unit judges the water according to the water meter bus current signal received
Whether there is water meter to break down or line short problem in table bus, is sent according to judging result to the protection circuit 300
Signal is controlled, if electric current is excessive in water meter bus, the protection circuit 300 controls the water meter bus broken circuit.
Specifically, the data transmitting line 100 includes: power control circuit 110, over-current detection circuit 120 and external
Bus circuit 130；The first end AO of the first output end connection water meter bus of data transmitting line 100, data transmitting line 100
Second output terminal connection water meter bus second end BO；
The output end Mbt of the input terminal connection MCU control unit of the power control circuit 110, the power supply control electricity
The output end on road 110 connects the input terminal of external bus circuit 130, the first output end of the external bus circuit 130 and
Two output ends are separately connected the first end AO and second end BO of water meter bus, the output end connection of the over-current detection circuit 120
The test side Dec of MCU control unit, input terminal connect the external bus circuit 130, for passing through external bus circuit 130
Acquire the electric current in water meter bus.
The power control circuit 110 includes power supply chip U1 and voltage-regulating circuit 111；
The input terminal of the power supply chip U1 connects 24V voltage, and adjustment end connects voltage-regulating circuit 111, the voltage
Adjustment circuit 111 includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the one or two
Pole pipe D1, first capacitor C1, the first triode Q1；The adjustment end of power supply chip U1 connects one end of the first resistor R1,
One end of two resistance R2, one end of 3rd resistor R3 and first capacitor C1 one end, the first resistor R1 and second resistance R2,
And first resistor R1 and 3rd resistor R3 is two groups of power supply build-out resistors of power supply chip U1, for adjusting power supply chip U1's
Output voltage.The other end of second resistance R2 connects the collector of the first triode Q1, and the base stage of the first triode Q1 connects
One end of the 4th resistance R4 and one end of the 5th resistance R5 are connect, the other end connection MCU control unit of the 4th resistance R4
The other end of output end Mbt, the 5th resistance R5 connect the emitter of the first triode Q1, first capacitor C1 the other end,
The other end of 3rd resistor R3 and ground connection；When the output end Mb of MCU control unit exports high level, the first triode Q1 is connected,
Second resistance R2 is grounded by the first triode Q1, therefore first resistor R1 and this group of second resistance R2 are to adjustment power supply chip
The output voltage of U1 works, and the power supply chip U1 exports low level；Conversely, the output end Mbt when MCU control unit is exported
The first triode Q1 is not turned on when low level, and first resistor R1 and 3rd resistor R3 play the output voltage of adjustment power supply chip U1
Effect, the output high level of power supply chip U1.
It is understood that the different level signal of height is passed through bus by control output end Mbt by MCU control unit
It is sent to water meter terminal.
The external bus circuit 130 is for reliably exporting the voltage of power supply chip U1, in order to protect entire data
Transmitting line 100, described includes that external bus circuit 130 includes the first fuse PTC1 and the second fuse PTC2, as schemed institute
Show that G1, G2, G3 are air discharge tube, connects wink between the second end of the first fuse PTC1 and the second fuse PTC2 second end
State inhibits diode D3, for preventing lightning stroke or surge；The first end of the first fuse PTC1 is that the data send electricity
First output end on road 100, the first end of the second fuse PTC2 are the second output terminal of the data transmitting line 100, number
According to the second end BO of the second output terminal connection water meter bus of transmitting line 100.
The over-current detection circuit 120 includes optocoupler P1, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th electricity
Hinder R9, zener diode D2, the second capacitor C2；One end of the 7th resistance R7 connects data hair with one end of the 9th resistance R9
First output end on power transmission road 100, the electric current on first end AO for acquiring water meter bus give the over-current detection circuit
120, specifically, one end of the 7th resistance R7 connects the second end of the first fuse PTC1 with one end of the 9th resistance R9,
The anode of the other end connection optocoupler P1 primary side of the 9th resistance R9 and the anode of zener diode D2, the zener diode
The cathode of D2 connects one end of the 6th resistance R6, and the other end of the 6th resistance R6 connects 110 output end of power control circuit；
It is understood that the optocoupler P1 can be realized the over-current detection of the over-current detection circuit 120, zener diode D2 can
Judge the threshold voltage of overcurrent, the 6th resistance R6 is that current-limiting resistance for limit through the electric current in optocoupler P1 primary side works as optocoupler
The threshold value that the voltage difference at the 7th both ends resistance R7 becomes larger more than zener diode D2 when electric current in P1 primary side is excessive, the optocoupler
P1 conducting, optocoupler P1 pair side collector become low level, the test side of the optocoupler P1 pair side collector connection MCU control unit
Dec, when the test side Dec of MCU control unit receives low level signal, MCU control unit makes that circuit 300 is protected to control
The water meter bus broken circuit.
The data receiver circuit 200 includes: the tenth resistance R10, eleventh resistor R11, twelfth resistor R12, the tenth
Three resistance R13, the 14th resistance R14, the 4th diode D4, zener diode D6, third capacitor C3, the 4th capacitor C4, the 5th
Capacitor C5 and amplifier U2；
The input terminal of the data receiver circuit 200 is the cathode of zener diode D6, the input of data receiver circuit 200
Anode, the tenth resistance R10 of the 4th diode D4 of anode connection of the first end AO of end connection water meter bus, zener diode D6
One end and the 14th resistance R14 one end, one end of the cathode connection eleventh resistor R11 of the 4th diode D4, described the
The reverse input end of the other end connection amplifier U2 of 11 resistance R11, the other end of the tenth resistance R10 meet amplifier U2
Positive input；The both ends of the 4th capacitor C4 are separately connected the other end and eleventh resistor R11 of the tenth resistance R10
The other end, the both ends of the 5th capacitor C5 are separately connected the other end of eleventh resistor R11 and the other end of the 14th resistance R14,
The both ends of the twelfth resistor R12 are separately connected the both ends of the 5th capacitor C5, the other end ground connection of the 14th resistance R14；Institute
The output end for stating amplifier U2 is the output end of the data receiver circuit 200, connects the input terminal of the MCU control unit
Mbus.It is understood that the zener diode D6 is to receive circuit start threshold voltage, only it is higher than this potential circuit
Work, avoids judging by accident；4th diode D4 provides an initial pressure difference for the amplifier of rear end, guarantees that the forward direction of amplifier U2 is defeated
Enter the voltage of the reverse input end of the voltage higher than amplifier U2 at end；Tenth resistance R10 and eleventh resistor R11 is limited galvanic electricity
Resistance, the 5th capacitor C5 and twelfth resistor R12 form a RC discharge circuit, and the 4th capacitor C4 is filter capacitor；It is connect in data
When the input terminal of receipts circuit 200 receives high level, then the voltage of the positive input of amplifier U2 is anti-higher than amplifier U2
To the voltage of input terminal, amplifier U2 exports high level to MCU control unit, otherwise exports low level to MCU control unit.
The protection circuit 300 includes: relay J1, the 15th resistance R15, the 16th resistance R16, the 17th resistance
R17, the 18th resistance R18, the 5th diode D5, the second triode Q2；
The base stage of the second triode Q2 connects one end of the 15th resistance R15, and the other end of the 15th resistance R15 connects
Meet the protection control terminal Jdq of MCU control unit, the both ends of the 16th resistance R16 be separately connected the second triode Q2 base stage and
Emitter；The other end of one end of the collector connection relay J1 coil of the second triode Q2, the relay J1 coil connects
Connect one end of the 17th resistance R17, one end of the 18th resistance R18 of the other end of the 17th resistance R17, the relay J1 line
The 5th diode D5 is also connected between the both ends of circle, the 5th diode D5 can protect the coil of the relay J1.
First output end of the first common end a1 connection data transmitting line 100 of the relay J1, relay J1's
The second output terminal of second common end a2 connection data transmitting line 100, the first normal-closed end b1 connection water of the relay J1
The second normal-closed end b2 connection water meter bus second end BO of table bus first end AO, the relay J1.
The 15th resistance R15 is the current-limiting resistance of the second triode Q2 base stage, and the 16th resistance R16 is described the
Relay J1 is not on-state two triode Q2 power on level, guarantee at the beginning of providing one before, passes through the second triode Q2's
It opens and is realized when not meter reading with the movement of shutdown control relay J1 to control switching on and off for water meter bus
Relay J1 cuts off the connection between interior external bus, and water meter is in non-charged state.Only relay is controlled when meter reading
Port and the water meter bus port of water meter bus are connected, is disconnected after the completion of meter reading, the time that can reduce water meter work in this way prolongs
Long service live.
Second aspect the utility model as the utility model provides a kind of multi-mode communication multi-protocols water meter acquiring device, such as
Shown in Fig. 1 and Fig. 2, the multi-mode communication multi-protocols water meter acquiring device includes:
Power module, uplink communication unit, downlink communication unit, MCU control unit and local maintenance unit, this is practical new
MCU control unit used by type is the prior art, such as the ARM serial model No. of NXP is the control core of LPC1778FBD144
Piece.
The uplink communication unit and downlink communication unit pass through the STATE of serial port transceiver circuit and MCU control unit
End connection, the serial port transceiver circuit can use Uart interface or PHY Ethernet interface.
The uplink communication unit includes: 470 wireless communication modules, bandwidth carrier module, narrowband carrier module, 4G communication
Module, CDMA module, GPRS module, NB-IOT module, ethernet module.The uplink communication unit is for receiving rear end main website
Meter reading request.It is understood that the uplink communication unit with a variety of communication modules can be connect by communication
Receive the meter reading request of rear end main website.
The downlink communication unit, the downlink communication unit include RS485 circuit and M-BUS circuit, the power supply mould
Block respectively with RS485 circuit and M-BUS circuit connection, respectively give RS485 provide 5V power supply, to M-BUS circuit provide 24V or
36V power supply.
It should be understood by those ordinary skilled in the art that: the foregoing is merely specific embodiment of the utility model and
, it is not intended to limit the utility model, all any modifications within the purport of the utility model, made, change equivalent replacement
Into etc., it should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of M-BUS circuit, which is characterized in that the M-BUS circuit includes:
Data transmitting line (100), the data transmitting line (100) include: power control circuit (110), over-current detection electricity
Road (120) and external bus circuit (130)；The output of the input terminal connection MCU control unit of the power control circuit (110)
Mbt is held, the output end of the power control circuit (110) connects the input terminal of external bus circuit (130), the external bus
The first output end and second output terminal of circuit (130) are separately connected the first end AO and second end BO of water meter bus, the mistake
The test side Dec of the output end connection MCU control unit of current detection circuit (120), input terminal connect the external bus circuit
(130).
2. M-BUS circuit as described in claim 1, which is characterized in that the power control circuit (110) includes power supply chip
U1 and voltage-regulating circuit (111)；
The adjustment end of the power supply chip U1 connects voltage-regulating circuit (111), and the voltage-regulating circuit (111) includes first
Resistance R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, first diode D1, first capacitor C1,
One triode Q1；The adjustment end of power supply chip U1 connects one end of the first resistor R1, one end of second resistance R2, third electricity
One end of R3 and one end of first capacitor C1 are hindered, the other end of second resistance R2 connects the collector of the first triode Q1, described
The base stage of first triode Q1 connects one end of the 4th resistance R4 and one end of the 5th resistance R5, and the 4th resistance R4's is another
The emitter of the first triode Q1 of other end connection of the output end Mbt, the 5th resistance R5 of end connection MCU control unit,
The other end of first capacitor C1, the other end of 3rd resistor R3 and ground connection.
3. M-BUS circuit as described in claim 1, which is characterized in that the over-current detection circuit (120) include optocoupler P1,
6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, zener diode D2, the second capacitor C2；
One end of the 7th resistance R7 connects the first output end of data transmitting line (100) with one end of the 9th resistance R9,
The electric current on first end AO for acquiring water meter bus gives the over-current detection circuit (120)；The 9th resistance R9's is another
One end connects the anode of optocoupler P1 primary side and the anode of zener diode D2, the 6th electricity of cathode connection of the zener diode D2
One end of R6 is hindered, the other end of the 6th resistance R6 connects power control circuit (110) output end；Optocoupler P1 pair side collection
The test side Dec of electrode connection MCU control unit.
4. M-BUS circuit as described in claim 1, which is characterized in that data receiver circuit (200) includes: the tenth resistance
R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the 14th resistance R14, the 4th diode D4, pressure stabilizing
Diode D6, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5 and amplifier U2；
The input terminal of the data receiver circuit (200) is the cathode of zener diode D6, the input of data receiver circuit (200)
Anode, the tenth resistance R10 of the 4th diode D4 of anode connection of the first end AO of end connection water meter bus, zener diode D6
One end and the 14th resistance R14 one end, one end of the cathode connection eleventh resistor R11 of the 4th diode D4, described the
The reverse input end of the other end connection amplifier U2 of 11 resistance R11, the other end connection amplifier U2's of the tenth resistance R10
Positive input；The both ends of the 4th capacitor C4 be separately connected the tenth resistance R10 the other end and eleventh resistor R11 it is another
One end, the both ends of the 5th capacitor C5 are separately connected the other end of eleventh resistor R11 and the other end of the 14th resistance R14, institute
The both ends for stating twelfth resistor R12 are separately connected the both ends of the 5th capacitor C5, the other end ground connection of the 14th resistance R14；It is described
The output end of amplifier U2 is the output end of the data receiver circuit (200), connects the input terminal of the MCU control unit
Mbus。
5. M-BUS circuit as described in claim 1, which is characterized in that protection circuit (300) includes: relay J1, the 15th
Resistance R15, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, the 5th diode D5, the second triode Q2；
The base stage of the second triode Q2 connects one end of the 15th resistance R15, the other end connection of the 15th resistance R15
The protection control terminal Jdq of MCU control unit, the both ends of the 16th resistance R16 are separately connected the base stage and hair of the second triode Q2
Emitter-base bandgap grading；One end of the collector connection relay J1 coil of second triode Q2, the other end connection of the relay J1 coil
One end of 17th resistance R17, one end of the 18th resistance R18 of the other end of the 17th resistance R17, the relay J1 coil
Both ends between be also connected with the 5th diode D5；
First output end of the first common end a1 connection data transmitting line (100) of the relay J1, the of relay J1
The second output terminal of two common end a2 connection data transmitting lines (100), the first normal-closed end b1 connection water of the relay J1
The second normal-closed end b2 connection water meter bus second end BO of table bus first end AO, the relay J1.
6. a kind of multi-mode communication multi-protocols water meter acquiring device, which is characterized in that the multi-mode communication multi-protocols water meter acquiring device packet
It includes:
Uplink communication unit, the uplink communication unit is connect by serial port transceiver circuit with MCU control unit, with rear end main website
Carry out data interaction；
Downlink communication unit, the downlink communication unit is connect by serial port transceiver circuit with MCU control unit, with water meter bus
Carry out data interaction；The downlink communication unit includes the M-BUS electricity as described in any one claim in claim 1 ~ 5
Road.
7. multi-mode communication multi-protocols water meter acquiring device as claimed in claim 6, which is characterized in that the uplink communication unit is adopted
With 470 wireless communication modules, bandwidth carrier module, narrowband carrier module, 4G communication module, CDMA module, GPRS module, NB-
One of IOT module and ethernet module are a variety of.
8. multi-mode communication multi-protocols water meter acquiring device as claimed in claim 6, which is characterized in that the downlink communication unit is also
Including RS485 circuit.
9. multi-mode communication multi-protocols water meter acquiring device as claimed in claim 6, which is characterized in that the serial port transceiver circuit can
To use Uart interface or PHY Ethernet interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920438126.5U CN209708300U (en) | 2019-04-02 | 2019-04-02 | A kind of M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device |
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| CN201920438126.5U CN209708300U (en) | 2019-04-02 | 2019-04-02 | A kind of M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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