CN109903546A - 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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Abstract
The present invention 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 present invention relates to automatic data collection technical fields, and in particular to a kind of M-BUS circuit and multi-mode communication are more
Agreement 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 present invention provides a kind of M-BUS circuit and multi-mode communication is assisted more
Discuss water meter acquiring device.
The technical solution provided according to the present invention, M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device.As this
The first aspect of invention provides a kind of M-BUS circuit, the M-BUS circuit include: data transmitting line, data receiver circuit and
Protect circuit；
Data transmitting line, the data transmitting line include: power control circuit, over-current detection circuit and external bus electricity
Road；The output end Mbt of the input terminal connection MCU control unit of the power control circuit, the output of the power control circuit
End 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 water
The first end AO and second end BO of table 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, the
Two resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, first diode D1, first capacitor C1, the first triode
Q1；The adjustment end of power supply chip U1 connect one end of the first resistor R1, one end of second resistance R2,3rd resistor R3 one
The one end at end and first capacitor C1, the other end of second resistance R2 connect the collector of the first triode Q1, the one or three pole
The base stage of pipe Q1 connects one end of the 4th resistance R4 and one end of the 5th resistance R5, the other end connection of the 4th resistance R4
The other end of the output end Mbt, the 5th resistance R5 of MCU control unit connect the emitter of the first triode Q1, the first electricity
Hold the other end of 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, and the input terminal of data receiver circuit connects water meter
The anode connection anode of the 4th diode D4 of the first end AO of bus, zener diode D6, one end of the tenth resistance R10 and the
One end of 14 resistance R14, one end of the cathode connection eleventh resistor R11 of the 4th diode D4, the eleventh resistor R11
Other end connection amplifier U2 reverse input end, the other end of the tenth resistance R10 connects the positive of amplifier U2 and inputs
End；The both ends of the 4th capacitor C4 are separately connected the other end of the other end and eleventh resistor R11 of the tenth resistance R10, the
The both ends of five capacitor C5 are separately connected the other end of eleventh resistor R11 and the other end of the 14th resistance R14, and the described 12nd
The both ends of resistance R12 are separately connected the both ends of the 5th capacitor C5, the other end ground connection of the 14th resistance R14；The amplifier U2
Output end be the data receiver circuit output end, connect 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, 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 of the relay J1, the second of relay J1 are public
Hold the second output terminal of a2 connection data transmitting line, the first normal-closed end b1 connection water meter bus first end of the relay J1
The second normal-closed end b2 connection water meter bus second end BO of AO, the relay J1.
As a second aspect of the invention, a kind of multi-mode communication multi-protocols water meter acquiring device is provided, the multi-mode communication is more
Agreement 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
Carry out data interaction；
Downlink communication unit, the downlink communication unit are connect by serial port transceiver circuit with MCU control unit, Xiang Shuibiao bus
Carry out data interaction；The downlink communication unit includes M-BUS circuit described in first aspect present invention.
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.
It can be seen that M-BUS circuit and multi-mode communication multi-protocols water meter acquiring device provided by the invention from the above,
Have following advantages compared with prior art: uplink and meanwhile support carrier band carrier wave, bandwidth carrier, micropower wireless mode and concentrate
Device communication, while supporting 4G, GPRS, CDMA, Ethernet, NB-IOT communication and background communication, it can be according to live ring
Different communication framework is disposed in border；And can control switching on and off for water meter bus, realize that relay J1 is cut when not meter reading
Connection in disconnected between external bus, water meter are in non-charged state.It is total that relay connection water meter is only controlled when meter reading
The port of line 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 working life.
Detailed description of the invention
Fig. 1 is structural block diagram of the invention.
Fig. 2 is the structural block diagram of data transmitting line of the present invention.
Fig. 3 is the circuit diagram of data transmitting line of the present invention.
Fig. 4 is the circuit diagram of data receiver circuit of the present invention.
Fig. 5 is the circuit diagram of present invention protection 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
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.Wherein identical components are presented with like reference characters.It needs to illustrate
It is that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to the direction in attached drawing.It uses
Word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.
As the first aspect of the present invention, as shown in Fig. 3 ~ Fig. 5, a kind of M-BUS circuit, the M-BUS circuit packet are provided
It 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, is controlled according to MCU
The control signal of unit processed to each water meter bus send data acquisition command, and the current signal for acquiring water meter bus export to
MCU control unit unit, MCU control unit unit judge the water meter bus according to the water meter bus current signal received
In whether there is water meter to break down or line short problem, control letter is sent to the protection circuit 300 according to judging result
Number, 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 control circuit 110
Output end connect the input terminal of external bus circuit 130, the first output end of the external bus circuit 130 and the second output
End is separately connected the first end AO and second end BO of water meter bus, the output end connection MCU control of the over-current detection circuit 120
The test side Dec of unit, input terminal connect the external bus circuit 130, for acquiring water meter by external bus circuit 130
Electric current in 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, first diode
D1, first capacitor C1, the first triode Q1；The adjustment end of power supply chip U1 connects one end of the first resistor R1, the second electricity
One end, one end of 3rd resistor R3 and one end of first capacitor C1 of R2, the first resistor R1 and second resistance R2 are hindered, and
First resistor R1 and 3rd resistor R3 is two groups of power supply build-out resistors of power supply chip U1, for adjusting the output of power supply chip U1
Voltage.The other end of second resistance R2 connects the collector of the first triode Q1, the base stage connection of the first triode Q1 the
One end of four resistance R4 and one end of the 5th resistance R5, the output of the other end connection MCU control unit of the 4th resistance R4
Mbt is held, the other end of the 5th resistance R5 connects emitter, the other end of first capacitor C1, third of the first triode Q1
The other end of resistance R3 and ground connection；When the output end Mb of MCU control unit exports high level, the first triode Q1 is connected, and 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 U1's
Output voltage works, and the power supply chip U1 exports low level；Conversely, the output end Mbt when MCU control unit exports low electricity
Usually the first triode Q1 is not turned on, and first resistor R1 and 3rd resistor R3 acts as the output voltage of adjustment power supply chip U1
With 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, and the input terminal of data receiver circuit 200 connects
The one of the anode connection anode of the 4th diode D4 of the first end AO of jointed water meter bus, zener diode D6, the tenth resistance R10
The one end at end and the 14th resistance R14, one end of the cathode connection eleventh resistor R11 of the 4th diode D4, the described 11st
The reverse input end of the other end connection amplifier U2 of resistance R11, the other end of the tenth resistance R10 are meeting amplifier U2 just
To 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 200, connects the input terminal Mbus of the MCU control unit.
It is understood that the zener diode D6 is to receive circuit start threshold voltage, only it is higher than this potential circuit and just works,
It avoids judging by accident；4th diode D4 provides an initial pressure difference for the amplifier of rear end, guarantees the positive input of amplifier U2
Voltage higher than amplifier U2 reverse input end voltage；Tenth resistance R10 and eleventh resistor R11 is current-limiting resistance, the
Five capacitor C5 and twelfth resistor R12 form a RC discharge circuit, and the 4th capacitor C4 is filter capacitor；In data receiver circuit
When 200 input terminal receives high level, then the voltage of the positive input of amplifier U2 is higher than the reversed input of amplifier U2
The voltage at end, 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, 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, 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.
The present invention provides a kind of multi-mode communication multi-protocols water meter acquiring device as a second aspect of the invention, such as Fig. 1 and Fig. 2
Shown, 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, the present invention are used
MCU control unit be the prior art, such as NXP ARM serial model No. be LPC1778FBD144 control chip.
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 above is only a specific embodiment of the present invention, and
It is not used in the limitation present invention, all any modification, equivalent substitution, improvement and etc. within purport of the invention, done should all include
Within protection scope of the present invention.
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 input terminal of the power control circuit (110) connects the defeated of MCU control unit
Outlet Mbt, the output end of the power control circuit (110) connects the input terminal of external bus circuit (130), described external total
The first output end and second output terminal of line circuit (130) are separately connected the first end AO and second end BO of water meter bus, described
The test side Dec of the output end connection MCU control unit of over-current detection circuit (120), the input terminal connection external bus electricity
Road (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 the data receiver circuit (200) includes: the tenth electricity
Hinder R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the 14th resistance R14, the 4th diode D4, steady
Press 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 the protection circuit (300) includes: relay J1,
15 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910261871.1A CN109903546B (en) | 2019-04-02 | M-BUS circuit and multimode communication multiprotocol water meter collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910261871.1A CN109903546B (en) | 2019-04-02 | M-BUS circuit and multimode communication multiprotocol water meter collector |
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| Publication Number | Publication Date |
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| CN109903546A true CN109903546A (en) | 2019-06-18 |
| CN109903546B CN109903546B (en) | 2024-06-25 |
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| CN111220229A (en) * | 2020-01-20 | 2020-06-02 | 沈畅 | AMR/AMI combined meter reading system, device and method |
| 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 |
| CN111710145A (en) * | 2019-12-26 | 2020-09-25 | 深圳市创仁科技有限公司 | High 4G water gauge collector based on M-BUS of stability |
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