CN106523418A - Fire-fighting two-line interface circuit for pressure relief controller for positive pressure blower - Google Patents
Fire-fighting two-line interface circuit for pressure relief controller for positive pressure blower Download PDFInfo
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- CN106523418A CN106523418A CN201611170795.6A CN201611170795A CN106523418A CN 106523418 A CN106523418 A CN 106523418A CN 201611170795 A CN201611170795 A CN 201611170795A CN 106523418 A CN106523418 A CN 106523418A
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- 238000001514 detection method Methods 0.000 claims abstract description 27
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 23
- 230000009466 transformation Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a fire-fighting two-line interface circuit for a pressure relief controller for a positive pressure blower. The fire-fighting two-line interface circuit is characterized by comprising a two-line polarity transformation circuit, a voltage stabilizing circuit and a two-line signal detection circuit. The two-line polarity transformation circuit comprises a two-way TVS pipe D5 and a bridge circuit. The voltage stabilizing circuit comprises a voltage stabilizing chip U1. The TVS pipe D5, the bridge circuit and the voltage stabilizing circuit are sequentially connected to a bus interface. The two-line signal detection circuit is supplied with the voltage stabilizing circuit, and is connected with the two-line polarity transformation circuit to detect the voltage signal on a bus. Compared with the prior art, the fire-fighting two-line interface circuit has the advantages of being simple in connection, high in circuit sensitivity, and long in service life.
Description
Technical field
The present invention relates to air-supply technical field is built, specifically a kind of disappearing for forced draft machine pressure release controller
Anti- two lines bus interface circuit.
Background technology
Forced draft machine is directed to the blower fan blow in escape corridor, and outside wind pressure is sent into interior by it.When building is sent out
During calamity of lighting a fire, the toxic gases such as a large amount of smog, carbon monoxide can be produced and sight line is blocked, the field measurement apparatus of forced draft machine
The exception for detecting working site air pressure is returned, is blown by fire-fighting stairway of the forced draft machine to escape, be i.e. pressure release makes interior
Smog can not arrive at stair, give people escape and create conditions.
Forced draft machine is typically loaded on building top, links with the malleation air-valve of each layer.Air-valve is opened during Initial Stage of Fire, is opened
Dynamic forced draft machine, makes staircase, elevator hall be in barotropic state (ventilation state).
Forced draft machine pressure release control device need to be arranged at EBI, and existing pressure release controller installs complicated, right
Detector has polar requirement.
The content of the invention
To overcome the shortcomings of that above-mentioned prior art is present, it is an object of the invention to provide one kind is easy to connection, react fast
The fire-fighting two lines bus interface circuit for forced draft machine pressure release controller of speed.
The technical solution adopted for the present invention to solve the technical problems is：It is a kind of for forced draft machine pressure release controller
Fire-fighting two lines bus interface circuit, is characterized in that：Including two lines bus polarity transformation circuitses, mu balanced circuit and two lines bus signal detection electricity
Road, the two lines bus polarity transformation circuitses include two-way TVS pipe D5 and bridge circuit, and the mu balanced circuit includes voltage stabilizing chip
U1, is sequentially ingressed into TVS pipe D5, bridge circuit and mu balanced circuit at EBI, the two lines bus signal deteching circuit is by voltage stabilizing
Circuit is powered, two lines bus signal deteching circuit connection two lines bus polarity transformation circuitses, detects the voltage signal in bus.
Preferably, the bridge circuit is made up of diode D3, D4, D7 and D8, the two ends connection bus of TVS pipe D5
Interface 1,2, one end of TVS pipe D5 connect the negative pole of one end of resistance R6, the positive pole of diode D3 and diode D7, TVS respectively
The other end of pipe D5 connects the negative pole of the other end of resistance R6, the positive pole of diode D4 and diode D8 respectively；Diode D3's
The negative pole of negative pole end output voltage V1, diode D3 connects the positive pole of the negative pole and diode D2 of diode D4, diode respectively
One end of the negative pole connection resistance R1 of D2, the other end output voltage V2 of resistance R1, the positive pole and diode D8 of diode D7
Positive pole is grounded.
Preferably, the model 7805 of voltage stabilizing chip U1, the IN pins of voltage stabilizing chip U1 connect resistance R1's respectively
One end of the other end, electric capacity C4 and electric capacity C5, the other end of electric capacity C4, C5 are grounded, the OUT pins output electricity of voltage stabilizing chip U1
Pressure Vcc, respectively connect electric capacity C9, the GND pins, electric capacity C9 and resistance R9 of one end voltage stabilizing chip U1 of resistance R9 the other end it is equal
Ground connection.
Preferably, the two lines bus signal deteching circuit include the first detection circuit and second detection circuit, described first
Detection circuit connects voltage V1, V2, the second detection circuit connection voltage V1 respectively.
Preferably, the first detection circuit includes diode D12, and the positive pole of the diode D12 connects voltage V1 and electricity
One end of resistance R19, the negative pole of diode D12 connect one end of resistance R20 and the negative pole of diode D13 respectively, diode D13's
Positive pole connects the base stage of resistance R21, electric capacity C9, the other end of electric capacity C7 and triode Q3, the emitter stage point of triode Q3 respectively
Not Lian Jie resistance R21, the other end of electric capacity C9 and resistance R22, R25 one end, another termination voltage V2 of resistance R22, resistance
The other end ground connection of R25, the colelctor electrode of triode Q3 connect one end of the other end and resistance R23 of electric capacity C7, resistance R23 respectively
The other end connect the positive pole of resistance R24, one end of electric capacity C8 and diode D14 respectively, the negative pole of diode D14 connects voltage
The other end of Vcc, resistance R19, R20, R24 and electric capacity C8 is grounded, and the positive pole of diode D14 connects output end S3.
Preferably, the second detection circuit includes diode D10, and the positive pole of affiliated diode D10 connects voltage V1, negative pole
Connect one end of resistance R13 and the colelctor electrode of triode Q2 respectively, the emitter stage of triode Q2 connects one end of resistance R17, collection
Electrode connects one end of resistance R15, resistance R16 and electric capacity C6 respectively, the other end of resistance R15, R16 connect respectively output end S1,
The other end of S2, resistance R13 connects the negative pole of diode D11, the positive pole of diode D11 connect respectively one end of resistance R14 and
The base stage of triode Q1, the emitter stage of triode connect the other end of voltage vcc and resistance R14 respectively, and colelctor electrode connects electricity respectively
One end of resistance R18 and the other end of output end K, resistance R17, R18 and electric capacity C6 are grounded.
The invention has the beneficial effects as follows：Compared with prior art, TVS pipe of the present invention is connected in parallel on EBI 1,2
Two ends, make signal deteching circuit from the damage of high pressure and surge pulse in bus, it is ensured that circuit safety, prolongation use the longevity
Life；The bridge circuit of diode D3, D4, D7 and D8 composition, realizes the memory conversion of bus voltage signal, when detection circuit can be with
In non-polar access bus；Detection circuit is quick on the draw rapidly.
Description of the drawings
Fig. 1 is the structure chart of the present invention.
Fig. 2 is the circuit diagram of two lines bus polarity transformation circuitses of the present invention and mu balanced circuit；
Fig. 3 is the circuit diagram of the first detection circuit of the present invention；
Fig. 4 is the circuit diagram of the second detection circuit of the present invention.
Specific embodiment
Clearly to illustrate the technical characterstic of this programme, below by specific embodiment, and its accompanying drawing is combined, to this
It is bright to be described in detail.
As Figure 1-4, a kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller of the invention,
It is characterized in that：Including two lines bus polarity transformation circuitses, mu balanced circuit and two lines bus signal deteching circuit, the two lines bus polarity becomes
Changing circuit includes two-way TVS pipe D5 and bridge circuit, and the mu balanced circuit includes voltage stabilizing chip U1, is sequentially ingressed at EBI
TVS pipe D5, bridge circuit and mu balanced circuit, the two lines bus signal deteching circuit are powered by mu balanced circuit, the inspection of two lines bus signal
Slowdown monitoring circuit connects two lines bus polarity transformation circuitses, detects the voltage signal in bus.
The bridge circuit is made up of diode D3, D4, D7 and D8, the two ends junctor highway interface 1 of TVS pipe D5,
2, one end of TVS pipe D5 connects the negative pole of one end of resistance R6, the positive pole of diode D3 and diode D7 respectively, TVS pipe D5
The other end connects the negative pole of the other end of resistance R6, the positive pole of diode D4 and diode D8 respectively；The negative pole end of diode D3
The negative pole of output voltage V1, diode D3 connects the positive pole of the negative pole and diode D2 of diode D4 respectively, and diode D2's is negative
Pole connects one end of resistance R1, and the other end output voltage V2 of resistance R1, the positive pole of the positive pole and diode D8 of diode D7 are equal
Ground connection.
The model 7805 of voltage stabilizing chip U1, the IN pins of voltage stabilizing chip U1 connect respectively the other end of resistance R1,
One end of electric capacity C4 and electric capacity C5, the other end of electric capacity C4, C5 are grounded, the OUT pin output voltage Vcc of voltage stabilizing chip U1,
Connect electric capacity C9, the other end of the GND pins, electric capacity C9 and resistance R9 of one end voltage stabilizing chip U1 of resistance R9 respectively to be grounded.
The breakdown voltage of two-way TVS pipe D5 is 36V, makes detection circuit from the damage of high pressure and surge pulse in bus
It is bad.Bridge circuit, for realizing the reversal of bus voltage signal, makes this detection circuit work as with non-polar access bus
In；Worked for late-class circuit by the voltage stabilizing of voltage stabilizing chip U3.
Preferably, the diode D2～D4, D7, D8 is IN4001, and the resistance of described resistance R1, R6, R9 is respectively
620 Ω, 1M Ω and 200K Ω, electric capacity C4 are 10 μ F/16V, and the capacitance of electric capacity C5, C9 is 100nF.
The two lines bus signal deteching circuit includes the first detection circuit and the second detection circuit, the first detection circuit
Connect voltage V1, V2, the second detection circuit connection voltage V1 respectively.
The first detection circuit includes diode D12, and the positive pole of the diode D12 connects voltage V1's and resistance R19
One end, the negative pole of diode D12 connect one end of resistance R20 and the negative pole of diode D13, the positive pole point of diode D13 respectively
Not Lian Jie resistance R21, electric capacity C9, the other end of electric capacity C7 and triode Q3 base stage, the emitter stage of triode Q3 connects respectively
One end of resistance R21, the other end of electric capacity C9 and resistance R22, R25, another termination voltage V2 of resistance R22, resistance R25's is another
One end is grounded, and the colelctor electrode of triode Q3 connects one end of the other end and resistance R23 of electric capacity C7 respectively, and resistance R23's is another
End connects the positive pole of resistance R24, one end of electric capacity C8 and diode D14 respectively, and the negative pole of diode D14 connects voltage vcc, resistance
The other end of R19, R20, R24 and electric capacity C8 is grounded, and the positive pole of diode D14 connects output end S3.
The second detection circuit includes diode D10, and the positive pole of affiliated diode D10 meets voltage V1, and negative pole connects respectively
One end of connecting resistance R13 and the colelctor electrode of triode Q2, the emitter stage of triode Q2 connect one end of resistance R17, colelctor electrode point
Not Lian Jie resistance R15, resistance R16 and electric capacity C6 one end, the other end of resistance R15, R16 connects output end S1, S2, resistance respectively
The other end of R13 connects the negative pole of diode D11, and the positive pole of diode D11 connects one end and the triode Q1 of resistance R14 respectively
Base stage, the emitter stage of triode connects the other end of voltage vcc and resistance R14 respectively, and colelctor electrode connects the one of resistance R18 respectively
The other end of end and output end K, resistance R17, R18 and electric capacity C6 is grounded.
Preferably, diode D10～D14 is switching diode 4148, and triode Q1, Q3 are NPN type 9012, three poles
Pipe Q2 is positive-negative-positive 9013, the resistance of resistance R13～R25 be respectively 200K Ω, 100K Ω, 6.8K Ω, 5.1K Ω, 200 Ω,
200K Ω, 1M Ω, 2M Ω, 200K Ω, 100K Ω, 510K Ω, 1M Ω, 510K Ω, the capacitance of electric capacity C6～C9 are respectively
470nF、30pF、330pF、30pF。
Voltage in two lines bus polarity transformation circuitses at V2 is the voltage signal of+24V in+17V or so, at V1 in bus
When, diode D12 conductings, D13 it is anti-phase by, triode Q3 in the acting as due to pull down resistor R24 at the state, S3
Low level；When being the voltage signal of+12V or 0V at the V1 in bus, diode D12 is anti-phase by, D13 conductings, now three pole
Pipe Q3 is in saturation state, is the high level less than VCC at S3.At the V1 for+24V or+12V when diode D11 in anti-
To cut-off state, triode Q1 is in acting as low level due to R18 pull down resistors at the state, K.It is 0V at V1
When, and when it is high level that the two ports of S1, S2 have one, diode D11 conductings, triode Q1 are in magnifying state, this
When K at be high level.
The above is the preferred embodiment of the present invention, for those skilled in the art,
Without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also regarded as this
Bright protection domain.
Claims (6)
1. a kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller, is characterized in that：Including two lines bus pole
Property translation circuit, mu balanced circuit and two lines bus signal deteching circuit, the two lines bus polarity transformation circuitses include two-way TVS pipe D5
And bridge circuit, the mu balanced circuit includes voltage stabilizing chip U1, and TVS pipe D5, bridge circuit and steady are sequentially ingressed at EBI
Volt circuit, the two lines bus signal deteching circuit are powered by mu balanced circuit, two lines bus signal deteching circuit connection two lines bus polarity
Translation circuit, detects the voltage signal in bus.
2. a kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller according to claim 1, its
It is characterized in that：The bridge circuit is made up of diode D3, D4, D7 and D8, the two ends junctor highway interface 1,2 of TVS pipe D5,
One end of TVS pipe D5 connects the negative pole of one end of resistance R6, the positive pole of diode D3 and diode D7 respectively, TVS pipe D5 it is another
One end connects the negative pole of the other end of resistance R6, the positive pole of diode D4 and diode D8 respectively；The negative pole end of diode D3 is defeated
Go out voltage V1, the negative pole of diode D3 connects the positive pole of the negative pole and diode D2 of diode D4, the negative pole of diode D2 respectively
One end of connection resistance R1, the other end output voltage V2 of resistance R1, the positive pole of the positive pole and diode D8 of diode D7 connect
Ground.
3. a kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller according to claim 2, its
It is characterized in that：The model 7805 of voltage stabilizing chip U1, the IN pins of voltage stabilizing chip U1 connect the other end of resistance R1, electricity respectively
Hold one end of C4 and electric capacity C5, the other end of electric capacity C4, C5 is grounded, the OUT pin output voltage Vcc of voltage stabilizing chip U1, point
Not Lian Jie electric capacity C9, the other end of the GND pins, electric capacity C9 and resistance R9 of one end voltage stabilizing chip U1 of resistance R9 be grounded.
4. a kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller according to claim 2, its
It is characterized in that：The two lines bus signal deteching circuit includes the first detection circuit and the second detection circuit, the first detection circuit
Connect voltage V1, V2, the second detection circuit connection voltage V1 respectively.
5. a kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller according to claim 4, its
It is characterized in that：The first detection circuit includes diode D12, and the positive pole of the diode D12 connects the one of voltage V1 and resistance R19
End, the negative pole of diode D12 connect one end of resistance R20 and the negative pole of diode D13, the positive pole difference of diode D13 respectively
The base stage of connection resistance R21, electric capacity C9, the other end of electric capacity C7 and triode Q3, the emitter stage of triode Q3 connect electricity respectively
One end of resistance R21, the other end of electric capacity C9 and resistance R22, R25, another termination voltage V2 of resistance R22, resistance R25's is another
End ground connection, the colelctor electrode of triode Q3 connect one end of the other end and resistance R23 of electric capacity C7, the other end of resistance R23 respectively
Connect the positive pole of resistance R24, one end of electric capacity C8 and diode D14 respectively, the negative pole of diode D14 connects voltage vcc, resistance
The other end of R19, R20, R24 and electric capacity C8 is grounded, and the positive pole of diode D14 connects output end S3.
6. a kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller according to claim 4, its
It is characterized in that：The second detection circuit includes diode D10, and the positive pole of affiliated diode D10 meets voltage V1, and negative pole connects respectively
One end of resistance R13 and the colelctor electrode of triode Q2, the emitter stage of triode Q2 connect one end of resistance R17, colelctor electrode difference
Connection resistance R15, one end of resistance R16 and electric capacity C6, the other end of resistance R15, R16 connect output end S1, S2, resistance respectively
The other end of R13 connects the negative pole of diode D11, and the positive pole of diode D11 connects one end and the triode Q1 of resistance R14 respectively
Base stage, the emitter stage of triode connects the other end of voltage vcc and resistance R14 respectively, and colelctor electrode connects the one of resistance R18 respectively
The other end of end and output end K, resistance R17, R18 and electric capacity C6 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170795.6A CN106523418A (en) | 2016-12-16 | 2016-12-16 | Fire-fighting two-line interface circuit for pressure relief controller for positive pressure blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170795.6A CN106523418A (en) | 2016-12-16 | 2016-12-16 | Fire-fighting two-line interface circuit for pressure relief controller for positive pressure blower |
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| CN106523418A true CN106523418A (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611170795.6A Pending CN106523418A (en) | 2016-12-16 | 2016-12-16 | Fire-fighting two-line interface circuit for pressure relief controller for positive pressure blower |
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| CN (1) | CN106523418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031793A (en) * | 2022-08-11 | 2022-09-09 | 成都国光电子仪表有限责任公司 | Bus digital flow metering system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090086831A1 (en) * | 2007-09-27 | 2009-04-02 | Honeywell International Inc. | Two-wire communications bus system |
| CN102324179A (en) * | 2011-05-17 | 2012-01-18 | 福建省万华电子科技有限公司 | Two-bus communication interface circuit |
| CN105092953A (en) * | 2015-09-17 | 2015-11-25 | 无锡蓝天电子有限公司 | Residual current detector and fire alarm system |
| CN206419251U (en) * | 2016-12-16 | 2017-08-18 | 山东金洲科瑞节能科技有限公司 | A kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller |
-
2016
- 2016-12-16 CN CN201611170795.6A patent/CN106523418A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090086831A1 (en) * | 2007-09-27 | 2009-04-02 | Honeywell International Inc. | Two-wire communications bus system |
| CN102324179A (en) * | 2011-05-17 | 2012-01-18 | 福建省万华电子科技有限公司 | Two-bus communication interface circuit |
| CN105092953A (en) * | 2015-09-17 | 2015-11-25 | 无锡蓝天电子有限公司 | Residual current detector and fire alarm system |
| CN206419251U (en) * | 2016-12-16 | 2017-08-18 | 山东金洲科瑞节能科技有限公司 | A kind of fire-fighting two lines bus interface circuit for forced draft machine pressure release controller |
Non-Patent Citations (1)
| Title |
|---|
| 王亮: "基于二总线的电气火灾监控系统的设计", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031793A (en) * | 2022-08-11 | 2022-09-09 | 成都国光电子仪表有限责任公司 | Bus digital flow metering system |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170309 Address after: 250021 Ji'nan, Central District, Shandong City Road, the southern part of the shop No. 18 Applicant after: Shandong Jinzhou Kerui Energy Technology Co. Ltd. Address before: The sun Huaiyin District of Ji'nan city in Shandong province 250022 District 100 building G8 Applicant before: Zeng Yirong |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |