CN110086142A - A kind of protective device based on MBUS node cluster - Google Patents
A kind of protective device based on MBUS node cluster Download PDFInfo
- Publication number
- CN110086142A CN110086142A CN201910339422.4A CN201910339422A CN110086142A CN 110086142 A CN110086142 A CN 110086142A CN 201910339422 A CN201910339422 A CN 201910339422A CN 110086142 A CN110086142 A CN 110086142A
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- Prior art keywords
- mbus
- resistance
- circuit
- controller
- node cluster
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- 230000001681 protective effect Effects 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims description 3
- 238000013024 troubleshooting Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/046—Signalling the blowing of a fuse
Landscapes
- Alarm Systems (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of protective devices based on MBUS node cluster; including MBUS bus input end is arranged in and for taking from MBUS electricity and for the power-supply circuit of controller power supply, the controller that the total line output terminal of MBUS and detection sample circuit for handle MBUS bus failure is arranged in, connect and detects sample circuit with power-supply circuit and be used to judge MBUS bus failure, and setting is in MBUS bus and police instruction circuit connected to the controller.The protective device based on MBUS node cluster is for acquiring the point protection between concentrator of panel, thermostat valve in central heating; it is solved since thermostat valve or the acquisition artificial short circuit of panel cause the entrance guard mode of whole system; accordingly even when short circuit occurs in acquisition, the normal operation of whole system is not influenced.
Description
Technical field
The present invention relates to heating system technical fields, and in particular to a kind of protective device based on MBUS node cluster.
Background technique
With being constantly progressive for national economy, country enforces to promote the energy saving purpose in central heating system
Household-based heat metering, the important evidence that household-based heat metering is often used as heating enterprise to settle accounts.On the one hand it can guarantee heat cost point
The fairness and reasonability at booth, a point family temperature adjusting refer to that user can gate according to the demand of itself by temperature control valve
System realizes that the adjusting of room temperature, by temperature control valve (TCV), can be such that the total pressure head of heating system keeps under two-pipe system
Within the scope of set, the reduction of Yu Shixian boiler oil consumption, the power consumption for reducing heat supply water pump are of great significance.
MBUS bus is used in present heating system, it is a kind of transmitting digitized important technology of measuring instrumentss data, is being built
Industry and the data of industry acquire various applications, MBUS big, scalability, at low cost, nonpolarity, transmission range with capacity
The advantages that remote.When node breaks down in MBUS bus, existing technology is using MBUS concentrator, although MBUS concentrator
Bringing onto load function, overload restores and short-circuit protection function, but when short trouble occurs, it just will affect the logical of whole system
News, and can not positioning failure.
Summary of the invention
The purpose of the present invention is to provide a kind of protective devices based on MBUS node cluster, can effective solution short trouble
When do not influence the communication of whole system, and can determine that fault point.
To achieve the above object, the invention provides the following technical scheme: a kind of protective device based on MBUS node cluster, packet
It includes and MBUS bus input end is set and for taking power-supply circuit that is electric and being controller power supply, setting total in MBUS from MBUS
Line output terminal and detection sample circuit for handling to MBUS bus failure, connect and detect with power-supply circuit sample circuit and
For judging the controller of MBUS bus failure, and it is arranged in MBUS bus and police instruction connected to the controller electricity
Road.
Preferably, the detection sample circuit includes the first output circuit and the second output circuit, the first output electricity
Road includes the first resistor R1 being sequentially connected in series, first diode TVS1 and the first fuse PPTC2, the second output circuit packet
Include the second resistance R2 being sequentially connected in series, the second diode TVS2 and the second fuse PPTC1, the 3rd resistor R3 and the 4th electricity
R4 series connection is hindered, and one end of 3rd resistor R3 is accessed between first resistor R1 and first diode TVS1, the 4th resistance R4's
One end is accessed between second resistance R2 and the second diode TVS2, and control is accessed between 3rd resistor R3 and the 4th resistance R4
Device.
Preferably, the police instruction circuit include respectively the 5th resistance R10 connected to the controller, the 6th resistance R11,
7th resistance R12, it shines with concatenated first Light-emitting diode LED 1 of the 5th resistance R10, with the 6th resistance R11 concatenated second
Diode (LED) 2, and with the concatenated third Light-emitting diode LED 3 of the 7th resistance R12.
As shown from the above technical solution, the invention has the following beneficial effects:
The protective device based on MBUS node cluster is protected for collector, putting between concentrator for thermostat valve in central heating
Shield, it is solved since thermostat valve or the artificial short circuit of collector cause the entrance guard mode of whole system, is adopted using detection
Sample circuit carries out the output end of cutting MBUS bus automatically after judging MBUS bus failure, accordingly even when collector occurs
Short circuit does not influence the normal operation of whole system, and in addition controller can detect the state of MCU_IN, carries out alert process, positioning
To the failure for being which node.
Detailed description of the invention
Fig. 1 is protective device structural schematic diagram of the present invention；
Fig. 2 is that protective device of the present invention is mounted on schematic diagram in system；
Fig. 3 is present invention detection sample circuit structural schematic diagram；
Fig. 4 is power-supply circuit structural schematic diagram of the present invention；
Fig. 5 is controller architecture schematic diagram of the present invention；
Fig. 6 is police instruction electrical block diagram of the present invention.
In figure: 1, power-supply circuit；2, sample circuit is detected；201, the first output circuit；202, the second output circuit；3, it controls
Device processed；4, police instruction circuit.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The model MKE02Z32VFM4 of controller used in the present embodiment (MCU) 3, producer are Freescale.
Fig. 1-6 is please referred to, the present invention provides a kind of technical solution: a kind of protective device based on MBUS node cluster, including
MBUS bus input end is set and for taking power-supply circuit 1 that is electric and being controller power supply, setting total in MBUS from MBUS
Line output terminal and detection sample circuit 2 for handling to MBUS bus failure connect and detect sample circuit with power-supply circuit
And for judging the controller 3 of MBUS bus failure, and it is arranged in MBUS bus and police instruction connected to the controller
Circuit 4.
As shown in figure 4, power-supply circuit takes electricity from MBUS bus, connected after third fuse F1 rectifier diode D1,
Rectifier diode D2, using the 3rd VIN foot for entering chip U3 after reverse-filling diode D9；Resistance R20, resistance R24 are whole
Voltage after stream, the 4th VIN foot of U3 is entered using two pipe D11 of reverse-filling, and U3 chip passes through resistance R21, resistance R22
The power supply of feedback output 5V is powered for controller.
As shown in figure 3, detection sample circuit 2 includes the first output circuit 201 and the second output circuit 202, the first output
Circuit includes the first resistor R1 being sequentially connected in series, first diode TVS1 and the first fuse PPTC2, and the second output circuit includes
The second resistance R2, the second diode TVS2 and the second fuse PPTC1,3rd resistor R3 that are sequentially connected in series and the 4th resistance R4 string
Connection, and a termination of the 4th resistance R4 between first resistor R1 and first diode TVS1 is accessed in one end of 3rd resistor R3
Enter between second resistance R2 and the second diode TVS2, takes contact access controller between 3rd resistor R3 and the 4th resistance R4
AD sample port MCU_IN.
As shown in fig. 6, police instruction circuit 4 includes the 5th resistance connecting respectively with 14,15, No. 16 ports of MCU
R10, the 6th resistance R11, the 7th resistance R12 and concatenated first Light-emitting diode LED 1 of the 5th resistance R10 and the 6th resistance
Concatenated second Light-emitting diode LED 2 of R11, and with the concatenated third Light-emitting diode LED 3 of the 7th resistance R12, LED1,
The other end of LED2 and LED3 is grounded (GND).
The course of work: it is taken from MBUS and judges that MBUS is total by sampling the state change of MCU_IN to MCU, MCU after electricity
State on line, when there is short circuit in the total line output terminal of MBUS (MBUS-OUT1 or MBUS-OUT2), the first output circuit and the
PPTC1 or PPTC2 on two output circuits are disconnected, and after disconnection, the total line output terminal of MBUS can be disconnected, not influenced in this way
The MBUS(MBUS-IN1 and MBUS-IN2 of MBUS bus input end) communication；When MBUS bus positive output end (MBUS-OUT1) is disconnected
After opening, the state of MCU_IN can also change, AD sampled value from large to small, when MBUS bus negative output terminal (MBUS-OUT2) disconnect
AD sampled value is changed from small to big, and when MBUS bus positive-negative output end all disconnects, from large to small, the state of MCU_IN changes AD sampled value
(MCU controls into modulus, and using analog signal and digital signal, MCU carries out simulation to MCU_IN foot and adopts after change is detected by MCU
Sample is judged when sample states change according to the trend for being sampling variation), control police instruction circuit is alarmed；When
When short circuit occurs for MBUS input terminal, there is concentrator to complete short-circuit protection and alarm at this time.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of protective device based on MBUS node cluster, which is characterized in that including being arranged in MBUS bus input end and being used for
Electricity is taken from MBUS and is the power-supply circuit (1) of controller power supply, setting in the total line output terminal of MBUS and for MBUS bus
The detection sample circuit (2) of troubleshooting connect and detects sample circuit with power-supply circuit and for judging MBUS bus failure
Controller (3), and be arranged in MBUS bus and police instruction circuit connected to the controller (4).
2. a kind of protective device based on MBUS node cluster according to claim 1, it is characterised in that: the detection sampling
Circuit (2) includes the first output circuit (201) and the second output circuit (202), and first output circuit includes being sequentially connected in series
First resistor R1, first diode TVS1 and the first fuse PPTC2, second output circuit includes be sequentially connected in series
Two resistance R2, the second diode TVS2 and the second fuse PPTC1, the 3rd resistor R3 and the 4th resistance R4 series connection, and the
One end of three resistance R3 is accessed between first resistor R1 and first diode TVS1, and one end of the 4th resistance R4 is accessed second
Between resistance R2 and the second diode TVS2, access controller between 3rd resistor R3 and the 4th resistance R4.
3. a kind of protective device based on MBUS node cluster according to claim 1, it is characterised in that: the police instruction
Circuit (4) includes difference the 5th resistance R10 connected to the controller, the 6th resistance R11, the 7th resistance R12 and the 5th resistance
Concatenated first Light-emitting diode LED 1 of R10, with concatenated second Light-emitting diode LED 2 of the 6th resistance R11, and with the 7th
The concatenated third Light-emitting diode LED 3 of resistance R12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339422.4A CN110086142B (en) | 2019-04-25 | 2019-04-25 | MBUS node group-based protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339422.4A CN110086142B (en) | 2019-04-25 | 2019-04-25 | MBUS node group-based protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110086142A true CN110086142A (en) | 2019-08-02 |
| CN110086142B CN110086142B (en) | 2024-07-12 |
Family
ID=67416724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910339422.4A Active CN110086142B (en) | 2019-04-25 | 2019-04-25 | MBUS node group-based protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110086142B (en) |
Citations (14)
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| Publication number | Publication date |
|---|---|
| CN110086142B (en) | 2024-07-12 |
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