CN205862506U - A kind of stand alone type detector for electric fire protection - Google Patents
A kind of stand alone type detector for electric fire protection Download PDFInfo
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- CN205862506U CN205862506U CN201620864842.6U CN201620864842U CN205862506U CN 205862506 U CN205862506 U CN 205862506U CN 201620864842 U CN201620864842 U CN 201620864842U CN 205862506 U CN205862506 U CN 205862506U
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Abstract
The utility model discloses a kind of stand alone type detector for electric fire protection, power module, signal gathering unit, alarm module, keystroke handling unit, liquid crystal display, on-off model input/output control module and the communication module including the CPU being located in detector and electrically connected with described CPU, described signal gathering unit includes current signal collection module, residual current signal acquisition module and temperature signal collection module.This utility model can detect overload electric current and short circuit current and report to the police, the independent monitoring display of energy, save system cost, accessible temperature sensing cable carries out linear temperature-sensitive warning and connection fire-fighting link device carries out Function Extension, expansion is strong, additionally, this utility model uses nonpolarity double bus to carry out work of networking, stable performance, reliability is high.
Description
Technical field
This utility model relates to monitoring detector, especially relates to a kind of stand alone type detector for electric fire protection.
Background technology
Current daily life be unable to do without various electrical equipment, and electrical fire accident happens occasionally, electric on fire former
Because mainly having short circuit, overheated, loose contact, electric fault, overload and electric leakage etc., wherein, what short circuit caused electrically rises
Fire accident accounts for more than 50%.Existing detector for electric fire protection comprises only residual current detection unit or temperature detecting unit,
Function singleness, it is impossible to detect that short circuit current and overload electric current carry out corresponding fault alarm etc., it is impossible to meet field control
The monitoring requirement of switch cubicle.And current detector for electric fire protection does not has independent monitoring display function, mostly by one
Supervisory control device monitors the detector being scattered in each place of building, and system is huge, field less for required detector
Institute, such system is the wasting of resources unnecessary.Meanwhile, existing system has once been laid, and systemic-function would become hard to rise
Level transformation, expansion is poor.
Utility model content
The purpose of this utility model is the defect existed for above-mentioned prior art, it is provided that a kind of stand alone type electrical fire prison
Control detector.
The free-standing detector for electric fire protection that this utility model provides includes: the CPU that is located in detector and with institute
State power module, signal gathering unit, alarm module, keystroke handling unit and the liquid crystal display of CPU electrical connection, described
Signal gathering unit includes:
Current signal collection module, is used for gathering electric current and shows at described liquid crystal display；
Residual current signal acquisition module, is used for gathering residual current and judging foreign current mutual inductance according to residual current value
Whether device is short-circuited, open circuit fault；
Temperature signal collection module, for the voltage of external temperature sensor of sampling, judges according to the magnitude of voltage sampled
Whether described temperature sensor is short-circuited, open circuit fault.
Described detector for electric fire protection also includes on-off model input/output control module, is used for connecting temperature-sensitive
Cable and fire-fighting link device.
The circuit of described residual current signal acquisition module includes residual current transformer short circuit, open circuit decision circuitry and remains
Aftercurrent gathers difference channel, and it is short-circuit with residual current transformer, disconnected that residual current signal enters through a simulation control switch
Road decision circuitry and residual current gather after difference channel connects respectively and are connected with CPU.
The circuit of described current signal collection module include a current transformer, Transient Suppression Diode, one
Operational amplifier, two magnetic beads, six resistance and five electric capacity, current feed is linked on terminal I1, I1N, terminal I1 and electricity
Primary side first end of current transformer CT1 is connected, and terminal I1N is connected with current transformer primary side the second end, current transformer
Secondary side the 3rd end be connected with Current Transformer Secondary side the 4th end by a resistance R70, the secondary side of current transformer the
Three ends are by being divided into two-way after the magnetic bead FB3 and resistance R61 of series connection, and a road is connected with the inverting input of operational amplifier U3A,
Electric capacity C60 in parallel and resistance R68 of leading up to is connected with the outfan of operational amplifier, the secondary side the 4th of current transformer
Hold by being divided into two-way after the magnetic bead FB4 and resistance R74 of series connection, lead up to an electric capacity C65 ground connection, a road and operational amplifier
In-phase input end connect；The connecting line between connecting line and magnetic bead FB2 and resistance R74 between magnetic bead FB3 and resistance R61 leads to
Cross a Transient Suppression Diode TVS2 to connect；The reverse inter-input-ing ending grounding of operational amplifier, in-phase input end accesses the electricity of 3.3V
Source is simultaneously by an electric capacity C67 ground connection, and outfan is turned with an analog of described CPU by resistance R72, R73 of two series connection
Change pin to connect, the two ends of resistance R73 respectively by electric capacity C62, C64 ground connection, the in-phase input end of operational amplifier also by
One resistance R77 accesses reference voltage.
The circuit of described temperature signal collection module includes three resistance, five electric capacity and two magnetic beads, and external temperature passes
The input of sensor is connected with the two of circuit terminals TC11, TC12, two electric capacity C59, C55 be connected in parallel on two described terminals it
Between, meanwhile, terminal TC11 is divided into three tunnels after the magnetic bead FB1 by a series connection, and a resistance R26 of leading up to connects the direct current of 3.3V
Power supply, leads up to an electric capacity C15 ground connection, leads up to and is divided into two-way after the resistance R29 of a series connection, leads up to a resistance
One analog/digital conversion pin of R67 with CPU is connected, and leads up to an electric capacity C17 ground connection, the analog/digital conversion of resistance R67 Yu CPU
Also by an electric capacity C50 ground connection between the connecting line of pin；Terminal TC12 is by the magnetic bead FB2 ground connection of a series connection.
The circuit of described on-off model input control module includes two audions, diode, a voltage stabilizing
Pipe, a magnetic bead, seven resistance and five electric capacity, connect a stabilivolt between two on-off model input DI11, DI12
DZ2, on-off model input DI11 are connected by the negative pole of a resistance R19 and diode D7, the positive pole of diode and
The DC source of one 3.3V connects, and another on-off model input DI12 is divided into three tunnels, a-road-through by after a magnetic bead L2
Crossing resistance R20 and the electric capacity C98 ground connection of parallel connection, the base stage of a resistance R21 and audion Q6 of leading up to is connected, and leads up to one
Being divided into two-way after resistance R23, lead up to the resistance R24 of parallel connection and electric capacity C99 ground connection, the base stage of a road and audion Q7 is even
Connect；The base stage of audion Q6 be connected by an electric capacity C101 with emitter stage after ground connection, colelctor electrode is divided into two-way, lead up to one electricity
The DC source of resistance R22 with 3.3V is connected, and an electric capacity C102 ground connection is passed through after being connected with the foot I_OPEN of CPU in a road；Audion
The grounded emitter of Q7, colelctor electrode elegance two-way, the DC source of resistance R25 with 3.3V of leading up to is connected, a road and CPU
Foot I_CLOSE connect after by an electric capacity C100 ground connection.
The circuit of described on-off model output control module includes a relay, audion, two poles
Pipe, an electrochemical capacitor and two resistance, external switch amount signal output part DO is by the base stage of a resistance R14 and audion Q1
By a resistance R17 ground connection after connection, the grounded emitter of audion, colelctor electrode is divided into two-way, a road with relay R L1
First input end connects, and a road is connected with the positive pole of diode D1, and the negative pole of diode is divided into two-way, the of a road and relay
Two inputs connect, and an electrochemical capacitor C16 ground connection, the first, second of relay are passed through after being connected with the DC source of 5V in a road
Outfan is believed as another switching value as an on-off model outfan DO1, the 3rd outfan of relay after connecting
Number outfan DO2.
Described detector for electric fire protection also includes communication module, and described detector is by described communication module and outside
Supervisory control device connects communication.
Compared with prior art, the beneficial effects of the utility model are:
1. it is capable of detecting when that short circuit current and overload electric current carry out corresponding fault alarm, it is provided that current signal collection
Module, by liquid crystal display in locally displayed various sampled values and state, independent monitoring site, less at needs detector
Place save system resource and cost；
2. can access temperature sensing cable by On-off signal output control module and carry out linear temperature-sensitive warning, this module also sets
Having the interface of multiple fire-fighting link device, can conveniently connect the devices such as the cigarette sense of alarm free function, warming, autgmentability is strong；
3. this utility model is additionally provided with communication module simultaneously, also can be connected with outside supervisory control device outside independent monitoring into
Row system upgrade is transformed；
4. use nonpolarity double bus carry out network work, stable performance, highly reliable.
Accompanying drawing explanation
Fig. 1 is module frame chart of the present utility model；
Fig. 2 is the circuit diagram of this utility model current signal collection module；
Fig. 3 is the theory diagram of this utility model residual current signal acquisition module；
Fig. 4 is the circuit diagram of this utility model temperature signal collection module；
Fig. 5 is the circuit diagram of this utility model on-off model input control module；
Fig. 6 is the circuit diagram of this utility model output switch parameter control module；
Fig. 7 is the circuit diagram of this utility model communication module.
Detailed description of the invention
With embodiment, utility model is described in detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, the free-standing detector for electric fire protection that the utility model proposes includes: be located in detector
CPU and the power module electrically connected with this CPU, signal gathering unit, alarm module, keystroke handling unit, liquid crystal display,
On-off model input/output control module and communication module.220V is exchanged by power module by an AC-DC change-over circuit
Electricity is converted into unidirectional current and powers to detector C PU.
Signal gathering unit includes: three road current signal collection modules, is used for gathering electric current at described liquid crystal display
Show；Three road residual current signal acquisition module, are used for gathering residual current and judging external electrical according to residual current value
Whether current transformer is short-circuited, open circuit fault；One road temperature signal collection module, for the electricity of external temperature sensor of sampling
According to the resistance value sampled, resistance, judges whether described temperature sensor is short-circuited, open circuit fault.When residual current signal is adopted
When collection module and temperature signal collection module have detected short circuit or open circuit fault, alarm module will send alarm.
Fig. 2 is the circuit diagram of current signal collection module.Current signal collection module circuit include a current transformer,
One Transient Suppression Diode, an operational amplifier, two magnetic beads, six resistance and five electric capacity, current feed is linked into
On terminal I1 and I1N, terminal I1 is connected with primary side first end of Current Transmit 1, and terminal I1N is with current transformer once
Side the second end is connected, and secondary side the 3rd end of current transformer is by a resistance R70 with Current Transformer Secondary side the 4th end even
Connecing, secondary side the 3rd end of current transformer is by being divided into two-way after the magnetic bead FB3 and resistance R61 of series connection, and a road is put with computing
The inverting input of big device U3A connects, lead up to parallel connection electric capacity C60 and resistance R68 and operational amplifier outfan even
Connect, secondary side the 4th end of current transformer by series connection magnetic bead FB4 and resistance R74 after be divided into two-way, lead up to one electricity
Holding C65 ground connection, a road is connected with the in-phase input end of operational amplifier；Connecting line between magnetic bead FB3 and resistance R61 and magnetic bead
Connecting line between FB2 with resistance R74 is connected by a Transient Suppression Diode TVS2；The anti-phase input termination of operational amplifier
Ground, in-phase input end accesses the power supply of 3.3V simultaneously by an electric capacity C67 ground connection, outfan by the resistance R72 of two series connection,
Analog/digital conversion pin the 28th foot of R73 with CPU is connected, and the two ends of resistance R73 are respectively by electric capacity C62, C64 ground connection, and computing is put
The in-phase input end of big device accesses reference voltage also by a resistance R77.
Current acquisition module is gathered the current value of current transformer and is shown by liquid crystal display, user Ke Gen
The current value shown according to liquid crystal display is monitored protective measure.
Fig. 3 is the theory diagram of residual current signal acquisition module.Residual current signal acquisition module includes residual current
Transformer short circuit, open circuit decision circuitry and residual current gather difference channel, and residual current signal enters through a simulation and controls
Switch to gather with residual current transformer short circuit, open circuit decision circuitry and residual current and connect with CPU after difference channel is connected respectively
Connect.When collecting residual current value and being 0, simulation is controlled switch with residual current transformer decision circuitry short-circuit, short-circuit even
Logical, determine whether that whether external redundant current transformer is the normal shape of short trouble, open circuit fault or simply non-dosage
State.When collecting magnitude of voltage more than 3V, then can determine whether out that outside residual current transformer there occurs open circuit fault；When collecting
When magnitude of voltage is less than 0.2V, then can determine whether out that outside residual current transformer there occurs short trouble.When the magnitude of voltage gathered is situated between
Time between 0.2V and 3V, then can determine whether out that outside residual current transformer connects normal, simply do not add outside this transformer
Enter to have residual current.
Temperature signal collection module is connected with CPU after being gathered by resistance, capacitance partial pressure.Fig. 4 is temperature signal collection mould
The circuit diagram of block.Temperature signal collection modular circuit includes three resistance, five electric capacity and two magnetic beads, external temperature sensor
Input be connected with two terminals TC11, TC12 of circuit, two electric capacity C59, C55 be connected to two terminal TC11,
Between TC12, meanwhile, terminal TC11 is divided into three tunnels after the magnetic bead FB1 by a series connection, and a resistance R26 of leading up to connects 3.3V
DC source, lead up to an electric capacity C15 ground connection, lead up to and be divided into two-way after the resistance R29 of a series connection, lead up to one
Analog/digital conversion pin the 30th foot of resistance R67 with CPU is connected, and leads up to an electric capacity C17 ground connection, and the mould of resistance R67 Yu CPU/
Also by an electric capacity C50 ground connection between the connecting line of number conversion pin；Terminal TC12 is by the magnetic bead FB2 ground connection of a series connection.
The short-circuit temperature threshold of temperature sensor is 140 °, and trip temperature threshold value is-10 °.Temperature signal is directly adopted by CPU
The signal of collection module input processes, when the resistance value of the magnitude of voltage corresponding temperature sensor of sampling is less than the highest temperature of regulation
This temperature sensor short circuit it is judged as during 140 ° of corresponding resistance values of degree；Resistance when the magnitude of voltage corresponding temperature sensor of sampling
It is judged as this temperature sensor open circuit when value is more than the resistance value corresponding to minimum temperature-10 ° of regulation.
Fig. 5 is the circuit diagram of on-off model input control module.On-off model input control module circuit includes two
Individual audion, a diode, a stabilivolt, a magnetic bead, seven resistance and five electric capacity, two on-off model inputs
End connects a stabilivolt DZ2 between DI11, DI12, an on-off model input DI11 is by resistance R19 and a diode
The negative pole of D7 connects, and the positive pole of diode and the DC source of a 3.3V connect, and another on-off model input DI12 leads to
It is divided into three tunnels after crossing a magnetic bead L2, leads up to the resistance R20 of parallel connection and electric capacity C98 ground connection, lead up to a resistance R21 and three
The base stage of pole pipe Q6 connects, and leads up to and is divided into two-way after a resistance R23, and the resistance R24 and electric capacity C99 of parallel connection of leading up to connects
Ground, a road is connected with the base stage of audion Q7；The base stage of audion Q6 be connected by an electric capacity C101 with emitter stage after ground connection, collection
Electrode is divided into two-way, and the DC source of resistance R22 with 3.3V of leading up to is connected, after a road is connected with the foot I_OPEN of CPU
By an electric capacity C102 ground connection；The grounded emitter of audion Q7, colelctor electrode elegance two-way, lead up to a resistance R25 with
The DC source of 3.3V connects, and an electric capacity C100 ground connection is passed through after being connected with the foot I_CLOSE of CPU in a road.
The on-off model input control module two universal input/output (GPIO) mouth foot I_OPEN, foot I_ by CPU
CLOSE connects CPU and realizes the detection of on-off model.CPU can detect the peripheral On-off signal Guan Bi of routine, off-state
Can also detect whether external switch amount loop exists the situation of broken string simultaneously, enhance the reliability of detection.The normal work of detector
When making at a distance on two inputs of on-off model and connect a 10K resistance, when the CPU in detector detects pin I_OPEN
When being low level with foot I_CLOSER, illustrate that outside On-off signal is closure state；When CPU detects that foot I_OPEN is
Low level, when foot I_CLOSER is high level, illustrates that the input of external switch amount is for off-state；When CPU detects foot I_OPEN
When being high level with foot I_CLOSER, illustrate that external switch amount input circuit has broken string situation.
Fig. 6 is the circuit diagram of output switch parameter control module.Output switch parameter control module circuit diagram includes a relay
Device, an audion, a diode, an electrochemical capacitor and two resistance, external switch amount signal output part DO passes through one
The base stage of resistance R14 and audion Q1 passes through a resistance R17 ground connection after being connected, and the grounded emitter of audion, colelctor electrode is divided into
Two-way, a road is connected with the first input end 5 with relay R L1, and a road is connected with the positive pole of diode D1, the negative pole of diode
Being divided into two-way, a road is connected with the second input 2 of relay, and an electrochemical capacitor is passed through after being connected with the DC source of 5V in a road
C16 ground connection, as an on-off model outfan DO1 after first, second outfan 1,6 connection of relay, relay
3rd outfan 3 is as another on-off model outfan DO2.
On-off model input/output control module can be connected with temperature sensing cable and carries out linear temperature-sensitive warning, also can with disappear
Anti-linkage connects, the function of extension detector for electric fire protection.Fire-fighting link device has the linkage control of water fire-extinguishing system
System, the coordinated signals of gas extinguishing system, the coordinated signals of fire resistance rolling shutter door, the coordinated signals of smoke evacuation system, stopping air-conditioning sending
The coordinated signals of wind, the coordinated signals excising the coordinated signals of non fire fighting power supply, the coordinated signals of elevator, broadcast system etc..
Fig. 7 is the circuit diagram of communication module.Communication module circuitry includes two optocouplers, five audions, pressure-sensitive electricity
Resistance, two Zener diodes, six switching diodes, 17 resistance, seven electric capacity and two electrochemical capacitors, double bus is just
Connecting a varistor RV1 between negative terminal L+, L-, electric capacity C13, C16 are connected in parallel on varistor RV1 two ends, electric capacity C13, C16 with
Rectifier bridge that one is made up of diode D1, D3, D4, D5 is divided into three tunnels after connecting, and leads up to resistance R24 ground connection, a road and three
The colelctor electrode of pole pipe Q3 connects, and leads up to and is divided into two-way after the diode D2 and resistance R22 of series connection, leads up to and a little solve electricity
Holding E3 ground connection, the colelctor electrode of a resistance R3 and audion Q1 of leading up to is connected, and leads up to a resistance R25's and audion Q1
Base stage connects, and the base stage of audion Q1 is connected with the negative pole of Zener diode D6, the plus earth of Zener diode D6, audion
After the emitter stage of Q1 is connected with the power supply of 5V, electric capacity C14 in parallel and point solve electric capacity E1 ground connection；The base stage of audion Q3 is divided
Cheng Sanlu, a road is connected with the colelctor electrode of audion Q4, and the colelctor electrode of diode D9 and audion Q6 of leading up to is connected, a road
Resistance R30 and electric capacity C18 in parallel are divided into two-way, lead up to resistance R33 ground connection, photosensitive three poles of a road and optocoupler U1
The emitter stage of pipe connects, and the colelctor electrode of the phototriode of optocoupler U1 is connected with the power supply of 5V, the light emitting diode of optocoupler U1
Positive pole is connected with the DC source of 3.3V, and negative pole accesses the CPU of detector as terminals FK；The emitter stage of audion Q4 connects
Ground, colelctor electrode is divided into two-way, leads up to electric capacity C19 ground connection, and the emitter stage of resistance R32 and audion Q3 of leading up to is connected；
The emitter stage of audion Q3 is simultaneously by resistance R35 ground connection, and the colelctor electrode of audion Q3 is divided into two-way by after a resistance R41,
Leading up to an electric capacity C22 ground connection, a road is connected with the negative pole of Zener diode D10, and the positive pole of Zener diode D10 passes through one
Resistance R43 is connected with the base stage of audion Q6, is also parallel with electric capacity C23 and electricity between positive pole and the electric wire of Zener diode D10
Resistance R44；The emitter stage of audion Q6 be connected with the repellel of audion Q7 after ground connection, the colelctor electrode of audion Q6 is divided into two-way,
The DC source of resistance R40 with 5V of leading up to is connected, and the base stage of resistance R42 and audion Q7 of leading up to is connected, audion
The colelctor electrode of Q7 is connected with the negative pole of the light emitting diode of optocoupler U2, and the positive pole of the light emitting diode of optocoupler U2 passes through resistance R39
Being connected with the DC source of 5V, the grounded emitter of the phototriode of optocoupler U2, colelctor electrode accesses as terminals R24VH and visits
Survey the CPU of device, be connected by the DC source of resistance R38 with 3.3V simultaneously.
Detector can be connected communication, detection of the present utility model by communication module and double bus with outside supervisory control device
Device not only can independent monitoring display field condition, also can be connected communication with outside supervisory control device, with extension system, function is very
Complete.
The bus input end of communication module is changed into nonpolarity by the polarity of a rectifier bridge conversion double bus, passes through
Nonpolarity double bus communication pattern is used to carry out data exchange, relative to the double bus of the band polarity that conventional equipment uses, this reality
The nonpolarity double bus used with novel detector, two buses can arbitrarily access, and does not exist and leads on the contrary owing to bus connects
Cause detector to damage or abnormal problem that works, greatly facilitate the construction wiring at scene.CPU is according in bus internal agreement
Hold and receive the instruction of monitoring device by the terminals R24VH in circuit and resolve, then by controlling terminals FK
Control the size of current on double bus, reach to change the purpose of signal condition in supervisory control device, thus realize signal is anti-
It is fed in supervisory control device realize data exchange.
Detector of the present utility model shows in liquid crystal display by gathering current signal, reaches independent field prison
The purpose of control, it is not necessary to access supervisory control device and i.e. can work independently, can cost-effective subtract in the less place of needs detector
Few wasting of resources.By residual current signal acquisition module and temperature signal collection module, reach to monitor residual current, temperature and be
No abnormal purpose.Detector is except can be in addition to locally displayed various sampled values and state, moreover it is possible to will gather data and each state
Amount uploads to carry out in electrical fire monitoring device background monitoring by double bus.Additionally, this utility model is also by switch
Amount input/output control module connects temperature sensing cable and carries out linear temperature-sensitive warning, and is provided with the interface of multiple fire-fighting link device,
Can conveniently connect the devices such as the cigarette sense of alarm free function, warming, autgmentability is strong.
Above-described embodiment is merely to illustrate detailed description of the invention of the present utility model.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the concept of the premise utility, it is also possible to make some deformation and change, this
A little deformation and change all should belong to protection domain of the present utility model.
Claims (8)
1. a free-standing detector for electric fire protection, it is characterised in that include the CPU being located in detector and with described
Power module, signal gathering unit, alarm module, keystroke handling unit and the liquid crystal display of CPU electrical connection, described letter
Number collecting unit includes:
Current signal collection module, is used for gathering electric current and shows at described liquid crystal display；
Residual current signal acquisition module, is used for gathering residual current and judging that foreign current transformer is according to residual current value
No be short-circuited, open circuit fault；
Temperature signal collection module, for the voltage of external temperature sensor of sampling, judges described according to the magnitude of voltage sampled
Whether temperature sensor is short-circuited, open circuit fault.
2. detector for electric fire protection as claimed in claim 1, it is characterised in that described detector for electric fire protection is also
Including on-off model input/output control module, it is used for connecting temperature sensing cable and fire-fighting link device.
3. detector for electric fire protection as claimed in claim 1, it is characterised in that described residual current signal acquisition module
Circuit include that residual current transformer short circuit, open circuit decision circuitry and residual current gather difference channel, residual current signal
Enter through a simulation and control switch and residual current transformer short circuit, open circuit decision circuitry and residual current collection difference channel
It is connected with described CPU after connecting respectively.
4. detector for electric fire protection as claimed in claim 1, it is characterised in that the electricity of described current signal collection module
Road includes a current transformer, Transient Suppression Diode, operational amplifier, two magnetic beads, six resistance and five
Individual electric capacity, current feed is linked on terminal I1, I1N, and terminal I1 is connected with primary side first end of Current Transmit 1, end
Sub-I1N is connected with current transformer primary side the second end, and secondary side the 3rd end of current transformer passes through resistance R70 and an electric current
Transformer secondary side the 4th end connects, and secondary side the 3rd end of current transformer is by after the magnetic bead FB3 and resistance R61 of series connection point
Becoming two-way, a road is connected with the inverting input of operational amplifier U3A, leads up to electric capacity C60 in parallel and resistance R68 and fortune
The outfan calculating amplifier connects, and secondary side the 4th end of current transformer is by being divided into after the magnetic bead FB4 and resistance R74 of series connection
Two-way, leads up to an electric capacity C65 ground connection, and a road is connected with the in-phase input end of operational amplifier；Magnetic bead FB3 and resistance R61
Between connecting line be connected by a Transient Suppression Diode TVS2 with the connecting line between magnetic bead FB2 with resistance R74；Computing is put
The reverse inter-input-ing ending grounding of big device, in-phase input end accesses the power supply of 3.3V and passes through an electric capacity C67 ground connection simultaneously, and outfan passes through
Resistance R72, R73 of two series connection are connected with an analog/digital conversion pin of described CPU, and the two ends of resistance R73 are respectively by electricity
Holding C62, C64 ground connection, the in-phase input end of operational amplifier accesses reference voltage also by a resistance R77.
5. detector for electric fire protection as claimed in claim 1, it is characterised in that the electricity of described temperature signal collection module
Road includes three resistance, five electric capacity and two magnetic beads, the input of external temperature sensor and the two of circuit terminal TC11,
TC12 connects, and two electric capacity C59, C55 are connected between two described terminals, and meanwhile, terminal TC11 is by a series connection
Being divided into three tunnels after magnetic bead FB1, a resistance R26 of leading up to connects the DC source of 3.3V, leads up to an electric capacity C15 ground connection,
Lead up to and be divided into two-way after the resistance R29 of a series connection, lead up to resistance R67 Yu CPU an analog/digital conversion pin even
Connect, lead up to an electric capacity C17 ground connection, also by an electric capacity between the connecting line of the analog/digital conversion pin of resistance R67 and CPU
C50 ground connection；Terminal TC12 is by the magnetic bead FB2 ground connection of a series connection.
6. detector for electric fire protection as claimed in claim 2, it is characterised in that described on-off model input controls
The circuit of module includes two audions, a diode, a stabilivolt, a magnetic bead, seven resistance and five electric capacity, two
The individual stabilivolt DZ2 that connects between on-off model input DI11, DI12, an on-off model input DI11 is by one
Resistance R19 is connected with the negative pole of diode D7, and the positive pole of diode and the DC source of a 3.3V connect, and another switching value is believed
Number input DI12 is divided into three tunnels by after a magnetic bead L2, leads up to the resistance R20 of parallel connection and electric capacity C98 ground connection, a-road-through
The base stage crossing a resistance R21 and audion Q6 is connected, and leads up to and is divided into two-way after a resistance R23, leads up to the electricity of parallel connection
Resistance R24 and electric capacity C99 ground connection, a road is connected with the base stage of audion Q7；The base stage of audion Q6 and emitter stage are by an electric capacity
C101 connect after ground connection, colelctor electrode is divided into two-way, and the DC source of resistance R22 with 3.3V of leading up to is connected, a road and CPU
Foot I_OPEN connect after by an electric capacity C102 ground connection；The grounded emitter of audion Q7, colelctor electrode elegance two-way, a-road-through
The DC source crossing resistance R25 with 3.3V is connected, and an electric capacity C100 ground connection is passed through after being connected with the foot I_CLOSE of CPU in a road.
7. detector for electric fire protection as claimed in claim 2, it is characterised in that described on-off model output controls
The circuit of module includes a relay, an audion, a diode, an electrochemical capacitor and two resistance, and outside is opened
Pass amount signal output part DO passes through a resistance R17 ground connection after being connected by the base stage of a resistance R14 and audion Q1, audion
Grounded emitter, colelctor electrode is divided into two-way, and a road is connected with the first input end (5) of relay R L1, and a road is with diode D1's
Positive pole connects, and the negative pole of diode is divided into two-way, and a road is connected with second input (2) of relay, a road and the direct current of 5V
Power supply is opened as one after connecting by an electrochemical capacitor C16 ground connection, first, second outfan (1,6) of relay after connecting
Pass amount signal output part DO1, the 3rd outfan (3) of relay is as another on-off model outfan DO2.
8. detector for electric fire protection as claimed in claim 1, it is characterised in that also include communication module, described detection
Device is connected communication by described communication module with outside supervisory control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620864842.6U CN205862506U (en) | 2016-08-10 | 2016-08-10 | A kind of stand alone type detector for electric fire protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN106875619A (en) * | 2017-04-19 | 2017-06-20 | 许昌许继低压电器有限公司 | A kind of Combined electric appliance fire disaster monitoring probe |
| CN107941360A (en) * | 2017-12-18 | 2018-04-20 | 厦门微普电子科技有限公司 | A kind of temperature sensing cable assembly and circuit for detecting, method for detecting |
| CN108022397A (en) * | 2018-01-18 | 2018-05-11 | 智慧式控股有限公司 | A kind of electrical fire detecting system of controlling intelligent household appliances |
| CN109188063A (en) * | 2018-09-26 | 2019-01-11 | 北京明日电力电子有限公司 | A kind of sensor self-adaptation type composite electric fire hazard monitoring detector |
| CN110264659A (en) * | 2019-05-22 | 2019-09-20 | 应急管理部沈阳消防研究所 | A kind of compound detector for electric fire protection and its monitoring method |
| CN114002976A (en) * | 2021-10-20 | 2022-02-01 | 许继集团有限公司 | Control detection circuit and detection method |
| CN114552525A (en) * | 2022-04-22 | 2022-05-27 | 四川力士达照明设备股份有限公司 | Integrated protection circuit and method based on isolated zero-crossing switch |
| CN116466046A (en) * | 2023-05-24 | 2023-07-21 | 无锡英凡特科技有限公司 | High-precision gas detector and reliability verification method thereof |
| CN116721509A (en) * | 2023-06-14 | 2023-09-08 | 宁波市轨道交通集团有限公司智慧运营分公司 | Electrical fire monitoring and fire control non-cutting control system based on microcomputer protection monitoring |
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| CN106875619A (en) * | 2017-04-19 | 2017-06-20 | 许昌许继低压电器有限公司 | A kind of Combined electric appliance fire disaster monitoring probe |
| CN106875619B (en) * | 2017-04-19 | 2023-04-07 | 许昌许继低压电器有限公司 | Combined type electric fire monitoring detector |
| CN107941360A (en) * | 2017-12-18 | 2018-04-20 | 厦门微普电子科技有限公司 | A kind of temperature sensing cable assembly and circuit for detecting, method for detecting |
| CN107941360B (en) * | 2017-12-18 | 2023-12-15 | 中汽客汽车零部件（厦门）有限公司 | Temperature sensing cable assembly, detection circuit and detection method |
| CN108022397A (en) * | 2018-01-18 | 2018-05-11 | 智慧式控股有限公司 | A kind of electrical fire detecting system of controlling intelligent household appliances |
| CN109188063A (en) * | 2018-09-26 | 2019-01-11 | 北京明日电力电子有限公司 | A kind of sensor self-adaptation type composite electric fire hazard monitoring detector |
| CN110264659A (en) * | 2019-05-22 | 2019-09-20 | 应急管理部沈阳消防研究所 | A kind of compound detector for electric fire protection and its monitoring method |
| CN110264659B (en) * | 2019-05-22 | 2024-03-01 | 应急管理部沈阳消防研究所 | Composite electric fire monitoring detector and monitoring method thereof |
| CN114002976B (en) * | 2021-10-20 | 2023-08-11 | 许继集团有限公司 | Control detection circuit and detection method |
| CN114002976A (en) * | 2021-10-20 | 2022-02-01 | 许继集团有限公司 | Control detection circuit and detection method |
| CN114552525A (en) * | 2022-04-22 | 2022-05-27 | 四川力士达照明设备股份有限公司 | Integrated protection circuit and method based on isolated zero-crossing switch |
| CN116466046A (en) * | 2023-05-24 | 2023-07-21 | 无锡英凡特科技有限公司 | High-precision gas detector and reliability verification method thereof |
| CN116466046B (en) * | 2023-05-24 | 2023-11-07 | 无锡英凡特科技有限公司 | High-precision gas detector and reliability verification method thereof |
| CN116721509A (en) * | 2023-06-14 | 2023-09-08 | 宁波市轨道交通集团有限公司智慧运营分公司 | Electrical fire monitoring and fire control non-cutting control system based on microcomputer protection monitoring |
| CN116721509B (en) * | 2023-06-14 | 2024-02-09 | 宁波市轨道交通集团有限公司智慧运营分公司 | Electrical fire monitoring and fire control non-cutting control system based on microcomputer protection monitoring |
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