CN208284068U - A kind of fire-fighting alarm system in conjunction with security protection - Google Patents
A kind of fire-fighting alarm system in conjunction with security protection Download PDFInfo
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- CN208284068U CN208284068U CN201820918710.6U CN201820918710U CN208284068U CN 208284068 U CN208284068 U CN 208284068U CN 201820918710 U CN201820918710 U CN 201820918710U CN 208284068 U CN208284068 U CN 208284068U
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Abstract
The utility model discloses a kind of fire-fighting in conjunction with security protection alarm system, its key points of the technical solution are that including temperature sensor and security module, further includes: sample circuit, the voltage signal on temperature collection sensor, and exported；Fire compares warning circuit；Short-circuit comparison circuit is electrically connected and is received with sample circuit the voltage signal from temperature sensor, high level signal is exported when detecting that voltage value reduces suddenly；The output end of the short circuit comparison circuit is coupled with electromagnetic relay, and the electromagnetic relay includes electromagnetic coil, normally opened contact and normally-closed contact；It is there are two the temperature sensor is total and parallel with one another, one of temperature sensor and normally opened contact coupled in series, another temperature sensor and normally-closed contact coupled in series.The utility model is solved when the technical issues of still being able to when short circuit to the fire condition progress in the region and alarm occurs for temperature sensor.
Description
Technical field
The utility model relates to a kind of fire protection warning fields, more specifically, it is related to a kind of fire-fighting and security alarm system
System.
Background technique
Fire is to threaten one of public safety, the disaster for endangering people's lives and properties in society, with social productive forces
Development, population becomes the more to open the more intensive, and the loss of fire also constantly rises.
In the prior art, the Authorization Notice No. that can refer to is the Chinese patent of CN204215535U, a kind of in real time to fire-fighting
Equipment carry out inspection, can quickly in time to scene carry out remote command, mitigate fire damage, high system safety fire-fighting with
Security protection combination alarm system, including administrative center's host, multiple fire-fighting equipments, local-monitoring device, network shooting equipment, alarm
Device, data collector, multiple information collections and detection device, wireless communication module, smart phone, voice input module, loudspeaker
With multiple LED display modules, smart phone is connected through wireless communication module with administrative center host by wireless network, loudspeaker
It is connected with administrative center host output end with multiple LED display modules that interval is set on exit passageway, each letter
Breath acquisition is correspondingly connected with each fire-fighting equipment respectively with detection device, and data collector is filled by each information collection and detection
Set the operation information for collecting each fire-fighting equipment respectively and by the information conveyance to administrative center's host.
When carrying out fire hazard monitoring to each building now, usually with multiple temperature alarms come respectively to different regions
Temperature detection is carried out, to alarm, if short circuit occurs for the temperature sensor in some region, fire once occurs for this region
Calamity, temperature sensor is just difficult to carry out this region and alarm, the intensity of a fire are just difficult to control.
Utility model content
It alarms in conjunction with security protection in view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of fire-fightings
System is connected with two temperature sensors in same position by the normally opened contact of electromagnetism current-collector with normally-closed contact respectively
Coupling, when the technology that can be turned off in time when short circuit and another temperature sensor works on occurs for a temperature sensor
Effect.
To achieve the above object, the utility model provides following technical solution: a kind of fire-fighting is alarmed system in conjunction with security protection
System, its key points of the technical solution are that including temperature sensor and security module, further includes: sample circuit, on temperature collection sensor
Voltage signal, and exported；Fire compares warning circuit；Short-circuit comparison circuit, be electrically connected with sample circuit and receive from
The voltage signal of temperature sensor, high level signal is exported when detecting that voltage value reduces suddenly；The short circuit comparison circuit
Output end be coupled with electromagnetic relay, the electromagnetic relay includes electromagnetic coil, normally opened contact and normally-closed contact；The temperature
It is there are two degree sensor is total and parallel with one another, one of temperature sensor and normally opened contact coupled in series, another temperature
Sensor and normally-closed contact coupled in series.The utility model, which is solved, still to be able to when short circuit occurs for temperature sensor to the region
Fire condition carry out and the technical issues of alarm.
By using above-mentioned technical proposal, the voltage signal on temperature sensor is adopted in real time by sample circuit
Sample, and be transferred to fire and compare warning circuit, fire, which compares warning circuit, carries out the voltage signal transmitted and preset value
Compare, issue preset signals after the comparison and alarm, if short circuit occurs for the temperature sensor, short-circuit comparison circuit will be passed
The defeated signal to come is compared with preset value, so that it is determined that short circuit occurs for the temperature sensor, thus the electricity of electromagnetic relay
Magnetic coil obtains electric, and control normally opened contact closure, normally-closed contact disconnects, another temperature sensor in this way is instead of the temperature sensor
It works, to continue the detection in the region, has ensured the accuracy of fire prediction.
The utility model is further arranged to: the sample circuit include first resistor and with first resistor coupled in series
Second resistance, one end ground connection of the first resistor, a termination power of the second resistance, the second resistance and two temperature
Spend sensor parallel.
By using above-mentioned technical proposal, sampled by voltage value of the second resistance to temperature sensor both ends, the
One resistance versus temperature sensor plays the role of protection, prevents temperature sensor from burning out because of short circuit.
The utility model is further arranged to: the both ends of the second resistance also coupled in series has the first two-way TVS pipe.
By using above-mentioned technical proposal, the resistance of the first two-way TVS pipe is higher under normal circumstances, is equivalent to open circuit；?
When short circuit occurs for temperature sensor, the resistance of the first two-way TVS pipe can sharply reduce to pass through electric current, to pass to temperature
Sensor plays the role of further protection.
The utility model is further arranged to: the short circuit comparison circuit includes first comparator, the first comparator
Model TLV3501, No. three pins of the first comparator are coupled with the second capacitor, another termination of second capacitor
Ground, No. seven pins of the first comparator connect power supply, and No. three pins are set to preset value V-ref1, the first comparator
No. two pins and No. six pins are respectively input/output terminal.
By using above-mentioned technical proposal, voltage value herein is transmitted to sample circuit by first comparator and is compared
Compared with No. two pins of first comparator are negative input, and when temperature sensor short circuit, input voltage is reduced, to export
The electromagnetic coil at end obtains the open circuit of the electric control temperature sensor, another temperature sensor obtains electric, realizes temperature sensor to this
Region continues to test.
The utility model is further arranged to: voltage amplification electricity is connected between the short circuit comparison circuit and sample circuit
Road, the voltage amplifier circuit include amplifier, with the eleventh resistor of the output end coupled in series of amplifier and with the 11st
The twelfth resistor of resistance coupled in series；The model LF353D of the amplifier, the negative input of the amplifier and its
Output end is mutually coupled.
By using above-mentioned technical proposal, the collected voltage signal of sample circuit is put by voltage amplifier circuit
It is then input in first comparator greatly, eleventh resistor plays the role of short-circuit protection to amplifier.
The utility model is further arranged to: the input terminal of the amplifier is electrically connected with protection circuit, the protection electricity
Road include with the 8th resistance of the positive input coupled in series of amplifier, with the 7th resistance of the 8th resistance coupled in series, with
6th resistance of the 7th resistance coupled in series, with the 5th resistance of the 6th resistance coupled in series and be coupled to the 7th resistance with one end
And the 8th the tenth resistance between resistance, the other end of the tenth resistance are grounded setting.
By using above-mentioned technical proposal, short-circuit protection is carried out to amplifier by protection circuit, when amplifier generation is short
Lu Shi, five resistance can consume the circuit in circuit and one part of current is imported underground, to play further to amplifier
Protective effect.
The utility model is further arranged to: the input terminal of the protection circuit is connected with the first mean value circuit, and described the
One mean value circuit includes the 9th resistance of two cathode coupled in series of the first doubly-linked diode and the first doubly-linked diode, divides
The 3rd resistor not being connected with two anodes of the first doubly-linked diode and the 4th resistance；The other end of 9th resistance is grounded
The other end of setting, the 3rd resistor and the 4th resistance is mutually coupled and is connected with power supply, the first doubly-linked diode
Model BAV70, two output ends of the first doubly-linked diode with the 5th resistance couple；The temperature sensor
Both ends have been respectively coupled to port A-1 and port A-2, and two of the 3rd resistor and the 4th resistance and the first doubly-linked diode are just
Port A-1 and port A-2 have been respectively coupled between pole.
It is the potential at temperature sensor both ends from the collected information of voltage of Acquisition Circuit by using above-mentioned technical proposal
Value can obtain average value and then input when two potential values reach two output end junctions of the first doubly-linked diode
Into amplifier, to obtain the temperature value of more accurately temperature sensor measured, and the first doubly-linked diode pair is put
Big device plays the role of electrostatic protection.
The utility model is further arranged to: the output end of the amplifier is connected with filter circuit, the filter circuit
Thirteenth resistor, one end including eleventh resistor coupled in series are coupled between eleventh resistor and thirteenth resistor
The first capacitor of one end coupling of 12 resistance, one end and thirteenth resistor far from eleventh resistor, both ends are electric with first respectively
Second pair of one end coupling of the two-way TVS pipe of third of the both ends coupling of appearance and one end and twelfth resistor far from eleventh resistor
To TVS pipe；The other end of the twelfth resistor is grounded, and states one end ground connection of an only capacitor, the other end of the two-way TVS pipe
It is coupled with first capacitor far from one end of ground terminal.
By using above-mentioned technical proposal, by the clutter in filter circuit filtering circuit, the second two-way TVS pipe and third
Two-way TVS pipe plays the role of short-circuit protection to voltage amplifier circuit.
The utility model is further arranged to: the fire, which compares, is electrically connected with delay between warning circuit and sample circuit
Circuit, the delay circuit include the first triode of No. two pins coupling of 555 timers, collector and 555 timers；Institute
The first triode is stated as NPN pipe, the base stage of first triode is connected with sample circuit, and emitter ground connection, described 555 is fixed
When device No. four pins connect power supply, No. three pins are coupled with port A-5.
By using above-mentioned technical proposal, delay output is carried out to the signal being transferred at this time by 555 timers, is prevented
Temperature sensor is because unexpected temperature increases and generates false alarm.
The utility model is further arranged to: it includes the second comparator, base stage and second that the fire, which compares warning circuit,
The second triode that the output end of comparator is electrically connected and the buzzer with the emitter coupling of the second triode, combined aural and visual alarm
With buzzer coupled in series, the model LM324 of second comparator, the positive input of second comparator is coupled with
Port A-5, negative input are set to preset value Vref1.
By using above-mentioned technical proposal, the anode of the second comparator receives the voltage signal that temperature sensor transmits, and
It is compared with preset value, the second comparator exports high level signal, such two or three pole when temperature is higher than preset value
The emitter of pipe obtains electric, and buzzer and combined aural and visual alarm are alarmed.
In conclusion the utility model has the advantages that compared with the prior art
1, the utility model by the normally opened contact of electromagnetic relay and normally-closed contact respectively with two temperature sensor strings
Connection coupling, can not be to the progress of the fire in the region and alarm to prevent when a temperature sensor short circuit；
2, the utility model sample circuit is sampled by voltage value of the second resistance to temperature sensor, first resistor
Play the role of protection to temperature sensor；
3, the utility model, which passes through, is input to the voltage signal received the negative input of first comparator, and with just
It is compared to the preset value of input terminal, when voltage is reduced, electromagnetic coil is timely to be obtained electric and pass the temperature under short-circuit condition
Sensor cutting.
Detailed description of the invention
Fig. 1 is sample circuit structural schematic diagram in embodiment；
Fig. 2 is voltage amplifier circuit structural schematic diagram in embodiment；
Fig. 3 is short circuit relatively electrical block diagram in embodiment；
Fig. 4 is delay circuit structural schematic diagram in embodiment；
Fig. 5 is that fire compares warning circuit structural schematic diagram in embodiment；
Fig. 6 is safety device structural schematic diagram in embodiment.
In figure: 1, temperature sensor；2, sample circuit；R1, first resistor；R2, second resistance；D1, the first two-way TVS
Pipe；3, voltage amplifier circuit；R11, eleventh resistor；T2, amplifier；32, circuit is protected；R5, the 5th resistance；R6, the 6th electricity
Resistance；R7, the 7th resistance；R8, the 8th resistance；R10, the tenth resistance；33, the first mean value circuit；R3,3rd resistor；R4, the 4th electricity
Resistance；BAV70-1, the first doubly-linked diode；R9, the 9th resistance；34, filter circuit；R12, twelfth resistor；R13, the 13rd electricity
Resistance；C1, first capacitor；D2, the second two-way TVS pipe；The two-way TVS pipe of D3, third；4, short-circuit comparison circuit；T1, first are compared
Device；C2, the second capacitor；KA1, electromagnetic coil；KA1, normally opened contact；KA1, normally-closed contact；5, delay circuit；Q1, the one or three pole
Pipe；51, the second mean value circuit；R14, the 14th resistance；R15, the 15th resistance；BAV70-2, the second doubly-linked diode；R16,
16th resistance；T3,555 timers；R17, the 17th resistance；R18, the 18th resistance；C3, third capacitor；D4, the one or two pole
Pipe；D5, the second diode；6, fire compares warning circuit；T4, the second comparator；Q2, the second triode；HA, buzzer；L1,
Combined aural and visual alarm；7, safety device；71, camera；72, microprocessor；73, display.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.The wherein identical attached drawing of identical components
Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to
It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry
The direction at center.
Embodiment: a kind of fire-fighting alarm system in conjunction with security protection, as shown in Figure 1, including temperature sensor 1, sample circuit
2, voltage amplifier circuit 3(compares report with reference to Fig. 4), fire with reference to Fig. 3), delay circuit 5(with reference to Fig. 2), short circuit comparison circuit 4(
Alert circuit 6(refers to Fig. 6 with reference to Fig. 5) and safety device 7().
Sample circuit 2 includes the two-way TVS pipe D1 of first resistor R1, second resistance R2 and first.First resistor R1 and second
Resistance R2 coupled in series, one end ground connection of first resistor R1, a termination power of second resistance R2, the first two-way TVS pipe D1's
The both ends coupled in parallel at both ends and second resistance R2, temperature sensor 1 altogether there are two and it is in parallel with the both ends of second resistance R2
Coupling.Second resistance R2 in this way samples the voltage value at 1 both ends of temperature sensor, and first resistor R1 is to temperature sensor 1
Play the role of protection, prevents temperature sensor 1 from burning out because of short circuit.
As shown in Fig. 2, voltage amplifier circuit 3 includes amplifier T2, protection circuit 32, the first mean value circuit 33 and filtered electrical
Road 34.The negative input of amplifier T2 and its output end couple, and the output end of amplifier T2 is coupled with eleventh resistor R11,
Eleventh resistor R11 plays the role of short-circuit protection to amplifier T2.Protecting circuit 32 includes the 5th resistance R5, the 6th resistance
R6, the 7th resistance R7, the 8th resistance R8 and the tenth resistance R10.5th resistance R5, the 6th resistance R6, the 7th resistance R7 and the 8th
Resistance R8 is serially connected coupling, and one end of the tenth resistance R10 and the junction of the 7th resistance R7 and the 8th resistance R8 couple, another
One end ground connection, one end of the 8th resistance R8 and the positive input of amplifier T2 couple.Amplifier T2 in this way is to using in circuit
Signal amplify, and by protection circuit 32 to amplifier T2 carry out short-circuit protection, when amplifier T2 occur short circuit when, five
A resistance can consume the circuit in circuit and one part of current is imported underground, to play further protection to amplifier T2
Effect.
First mean value circuit 33 includes 3rd resistor R3, the 4th resistance R4, the electricity of the first doubly-linked diode BAV70-1 and the 9th
Hinder R9.The model BAV70 of first doubly-linked diode BAV70-1, two anodes of the first doubly-linked diode BAV70-1 respectively with
The other end of 3rd resistor R3 and the 4th resistance R4 coupled in series, 3rd resistor R3 and the 4th resistance R4 are mutually coupled and connect
The junction of two cathode of power supply, the 9th one end resistance R9 and the first doubly-linked diode BAV70-1 couples, another termination
Ground.The both ends of temperature sensor 1 have been respectively coupled to port A-1 and port A-2,3rd resistor R3 and the 4th resistance R4 and first pair
It even has been respectively coupled to port A-1 and port A-2 between two anodes of diode BAV70-1, two port A-1 are mutually coupled,
Two port A-2 are mutually coupled, and the potential value at such 1 both ends of temperature sensor is transmitted to first by port A-1 and port A-2
The input terminal of doubly-linked diode BAV70-1, when two output ends that two potential values reach the first doubly-linked diode BAV70-1 connect
When meeting place, it can obtain and average value and then be input in amplifier T2 again, to obtain measuring for more accurately temperature sensor 1
Temperature value, and the first doubly-linked diode BAV70-1 plays the role of electrostatic protection to amplifier T2.
Filter circuit 34 includes twelfth resistor R12, thirteenth resistor R13, first capacitor C1, the second two-way TVS pipe D2
With the two-way TVS pipe D3 of third.13rd capacitor and eleventh resistor R11 coupled in series, one end of twelfth resistor R12 is coupled to
Junction between eleventh resistor R11 and thirteenth resistor R13, the other end connect power supply, one end of first capacitor C1 with
Thirteenth resistor R13 is coupled far from one end of eleventh resistor R11, and one end of other end ground connection, the second two-way TVS pipe D2 connects
Power supply is connect, the separate ground terminal of the other end and first capacitor C1, the both ends of the two-way TVS pipe D3 of third are with first capacitor C1's
Both ends are mutually coupled.Clutter in this way in first capacitor C1 filtering circuit, the second two-way TVS pipe D2 and the two-way TVS pipe D3 of third
Play the role of short-circuit protection to voltage amplifier circuit 3.
As shown in Figures 2 and 3, thirteenth resistor R13 is coupled with port A-6 far from one end of eleventh resistor R11, short circuit
Comparison circuit 4 includes first comparator T1, the second capacitor C2 and electromagnetic relay.No. two pins of first comparator T1 are connected with
Port A-6, No. three pins are equipped with preset value V-ref1, and the second capacitor C2 is upper and No. three pin couplings of first comparator T1
It connects, other end ground connection.No. three pins of first comparator T1 and No. eight pins are grounded, and connect power supply on No. seven pins, electricity
Magnetic relay includes electromagnetic coil KA1, normally opened contact KA1 and normally-closed contact KA1, the one end electromagnetic coil KA1 and first comparator
No. six pins of T1 couple, another termination, normally opened contact KA1 and one of 1 coupled in series of temperature sensor, normally-closed contact
KA1 and another 1 coupled in series of temperature sensor.In this way, being transmitted to electricity herein to sample circuit 2 by first comparator T1
Pressure value is compared, and No. two pins of first comparator T1 are negative input, with the concatenated temperature sensor of normally-closed contact KA1
1 is in running order, and when 1 short circuit of the temperature sensor, input voltage is reduced, thus the electromagnetic coil KA1 of output end obtain it is electric
1 open circuit of temperature sensor is controlled, another temperature sensor 1 must be electric, realizes that temperature sensor 1 continues to examine to the region
It surveys.
As shown in Figure 1 and Figure 4, the second mean value circuit 51 is electrically connected between delay circuit 5 and sample circuit 2, second
Being worth circuit 51 includes the 14th resistance R14, the 15th resistance R15, the second doubly-linked diode BAV70-2 and the 16th resistance R16.
The model BAV70 of second doubly-linked diode BAV70-2, two anodes of the second doubly-linked diode BAV70-2 are respectively with the tenth
The other end of four resistance R14 and the 15th resistance R15 coupled in series, the 14th resistance R14 and the 15th resistance R15 are mutually coupled
And power supply is connected, the junction of two cathode of the 16th one end resistance R16 and the second doubly-linked diode BAV70-2 couples,
Its other end ground connection.The both ends of temperature sensor 1 have been respectively coupled to port A-3 and port A-4, the 14th resistance R14 and the tenth
It has been respectively coupled to port A-3 and port A-4 between five resistance R15 and two anodes of the second doubly-linked diode BAV70-2, two
Port A-3 is mutually coupled, and two port A-4 are mutually coupled, the potential value at such 1 both ends of temperature sensor by port A-3 and
Port A-4 is transmitted to the input terminal of the second doubly-linked diode BAV70-2, when two potential values reach the second doubly-linked diode
When two output end junctions of BAV70-2, average value can be obtained and then be input in delay circuit 5 again, compared to obtain
The temperature value of accurate temperature sensor 1 measured, and the second doubly-linked diode BAV70-2 plays electrostatic to delay circuit 5
The effect of protection.
Delay circuit 5 includes 555 timer T3 and the first triode Q1.No. 1 pin of 555 timer T3 is grounded, No. 2 pipes
Foot has been respectively coupled to third capacitor C3, the 17th resistance R17 and the 18th resistance R18.The other end of third capacitor C3 is grounded, the
And supply coupling, the first triode Q1 is NPN triode to the other end of 17 resistance R17 and the 18th resistance R18, the one or three
The base stage of pole pipe Q1 and the 16th resistance R16 are coupled far from one end of ground terminal, No. 2 pipes of collector and 555 timer T3
Foot coupling, emitter ground connection.
No. 3 pins of 555 timer T3 are coupled with the cathode of first diode D4, the plus earth of first diode D4,
No. 3 pins of one end of the electromagnetic coil KA1 of first electromagnetic relay and 555 timer T3 couple, other end ground connection.555
No. 4 pins and No. 8 pins of timer T3 are all connected with power supply, and No. 5 pins are coupled with the cathode of the second diode D5, and the two or two
The anode and supply coupling of pole pipe D5, No. 6 pins and No. 7 pins of 555 timer T3 be mutually coupled and with the 18th resistance
R18 is coupled far from one end of power supply.
Such first delay circuit 553 from the base stage of the first triode Q1 receive sample circuit 2 issue signal after,
555 timer T3 start timing, and current signal is issued when periodically terminating after, pass through 555 timer T3 in this way to being transferred to this
When signal carry out delay output, prevent temperature sensor 1 because unexpected temperature increases and generate false alarm.
As shown in figure 5, it includes the second comparator T4, the second triode Q2, buzzer HA harmony that fire, which compares warning circuit 6,
Light crossing-signal L1.The model LM324 of second comparator T4, the positive input of the second comparator T4 are coupled with port A-5,
Negative input is provided with preset value Vref1, and the second triode Q2 is NPN triode, and the collector of the second comparator T4 connects
The output end of power supply, base stage and the second comparator T4 couple, and the emitter of buzzer HA and the second triode Q2 couple, acousto-optic
Alarm L1 and buzzer HA coupled in series, other end ground connection.The anode of such second comparator T4 receives temperature sensor 1
The voltage signal transmitted, and be compared with preset value, the high electricity of the second comparator T4 output when temperature is higher than preset value
Ordinary mail number, the emitter of such second triode Q2 obtain electric, and buzzer HA and combined aural and visual alarm L1 alarm.
As shown in fig. 6, safety device 7 includes camera 71, microprocessor 72 and display 73.Camera 71 and micro process
Device 72 is electrically connected, and display 73 is electrically connected with microprocessor 72, and camera 71 shares the image multiple, multiple cameras 71 are shot
It then enters in display 73 and is shown by microprocessor 72.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of fire-fighting alarm system in conjunction with security protection, including temperature sensor (1) and security module, which is characterized in that also wrap
It includes: sample circuit (2), the voltage signal on temperature collection sensor (1), and exported；
Fire compares warning circuit (6), and the output signal of sample circuit (2) is electrically connected and received with sample circuit (2), works as temperature
When the voltage value of sensor (1) is greater than preset value, exports high level signal and alarm；
Short-circuit comparison circuit (4), is electrically connected and is received with sample circuit (2) voltage signal from temperature sensor (1), work as detection
High level signal is exported when reducing suddenly to voltage value；
The output end of the short circuit comparison circuit (4) is coupled with electromagnetic relay, and the electromagnetic relay includes electromagnetic coil
(KA1), normally opened contact (KA1) and normally-closed contact (KA1)；
The temperature sensor (1) altogether there are two and parallel with one another, one of temperature sensor (1) and normally opened contact
(KA1) coupled in series, another temperature sensor (1) and normally-closed contact (KA1) coupled in series.
2. a kind of fire-fighting alarm system in conjunction with security protection according to claim 1, it is characterised in that: the sample circuit
It (2) include first resistor (R1) and the second resistance (R2) with first resistor (R1) coupled in series, the first resistor (R1)
One end ground connection, a termination power of the second resistance (R2), the second resistance (R2) and two temperature sensors (1) are simultaneously
Connection.
3. a kind of fire-fighting alarm system in conjunction with security protection according to claim 2, it is characterised in that: the second resistance
(R2) both ends also coupled in series has the first two-way TVS pipe (D1).
4. a kind of fire-fighting alarm system in conjunction with security protection according to claim 1, it is characterised in that: the short circuit is more electric
Road (4) includes first comparator (T1), the model TLV3501 of the first comparator (T1), the first comparator (T1)
No. three pins be coupled with the second capacitor (C2), the other end of second capacitor (C2) ground connection, the first comparator (T1)
No. seven pins connect power supply, No. three pins are set to preset value V-ref1, No. two pins and six of the first comparator (T1)
Number pin is respectively input/output terminal.
5. a kind of fire-fighting alarm system in conjunction with security protection according to claim 1, it is characterised in that: the short circuit is more electric
It is connected between road (4) and sample circuit (2) voltage amplifier circuit (3), the voltage amplifier circuit (3) includes amplifier
(T2), with the eleventh resistor (R11) of the output end coupled in series of amplifier (T2) and with eleventh resistor (R11) coupled in series
Twelfth resistor (R12)；The model LF353D of the amplifier (T2), the negative input of the amplifier (T2) and its
Output end is mutually coupled.
6. a kind of fire-fighting alarm system in conjunction with security protection according to claim 5, it is characterised in that: the amplifier (T2)
Input terminal be electrically connected with protection circuit (32), protection circuit (32) includes connecting with the positive input of amplifier (T2)
Coupling the 8th resistance (R8), with the 7th resistance (R7) of the 8th resistance (R8) coupled in series, coupling of connecting with the 7th resistance (R7)
The 6th resistance (R6) that connects, with the 5th resistance (R5) of the 6th resistance (R6) coupled in series and be coupled to the 7th resistance with one end
(R7) other end of the tenth resistance (R10) between the 8th resistance (R8), the tenth resistance (R10) is grounded setting.
7. a kind of fire-fighting alarm system in conjunction with security protection according to claim 6, it is characterised in that: the protection circuit
(32) input terminal is connected with the first mean value circuit (33), and the first mean value circuit (33) includes the first doubly-linked diode
(BAV70-1), with the 9th resistance (R9) of two cathode coupled in series of the first doubly-linked diode (BAV70-1), respectively with the
The connected 3rd resistor (R3) of two anodes of one doubly-linked diode (BAV70-1) and the 4th resistance (R4)；9th resistance
(R9) the other end, which is grounded, to be arranged, and the other end of the 3rd resistor (R3) and the 4th resistance (R4) is mutually coupled and and power supply
It is connected, the model BAV70 of the first doubly-linked diode (BAV70-1), the two of the first doubly-linked diode (BAV70-1)
A output end is coupled with the 5th resistance (R5)；The both ends of the temperature sensor (1) have been respectively coupled to port A-1 and port A-
2, coupling is distinguished between the 3rd resistor (R3) and the 4th resistance (R4) and two anodes of the first doubly-linked diode (BAV70-1)
It is connected to port A-1 and port A-2.
8. a kind of fire-fighting alarm system in conjunction with security protection according to claim 5, it is characterised in that: the amplifier (T2)
Output end be connected with filter circuit (34), the filter circuit (34) includes with eleventh resistor (R11) coupled in series
13 resistance (R13), one end are coupled to the twelfth resistor between eleventh resistor (R11) and thirteenth resistor (R13)
(R12), the first capacitor (C1) of one end coupling of one end and thirteenth resistor (R13) far from eleventh resistor (R11), both ends point
Not with the two-way TVS pipe of third (D3) of the both ends of first capacitor (C1) coupling and one end and twelfth resistor (R12) far from the tenth
Second two-way TVS pipe (D2) of one end coupling of one resistance (R11)；The other end of the twelfth resistor (R12) is grounded, and is stated solely
One end of one capacitor is grounded, and the other end and first capacitor (C1) of the two-way TVS pipe are coupled far from one end of ground terminal.
9. a kind of fire-fighting alarm system in conjunction with security protection according to claim 1, it is characterised in that: the fire compares report
It is electrically connected with delay circuit (5) between alert circuit (6) and sample circuit (2), the delay circuit (5) includes 555 timers
(T3), the first triode (Q1) of No. two pins of collector and 555 timers (T3) coupling；First triode (Q1) is
NPN pipe, the base stage of first triode (Q1) are connected with sample circuit (2), emitter ground connection, 555 timer
(T3) No. four pins connect power supply, and No. three pins are coupled with port A-5.
10. a kind of fire-fighting alarm system in conjunction with security protection according to claim 9, it is characterised in that: the fire compares
The second triode that warning circuit (6) is electrically connected including the second comparator (T4), base stage with the output end of the second comparator (T4)
(Q2) it connects with the buzzer (HA) with the emitter coupling of the second triode (Q2), combined aural and visual alarm (L1) with buzzer (HA)
Coupling, the model LM324 of second comparator (T4), the positive input of second comparator (T4) are coupled with port
A-5, negative input are set to preset value Vref1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820918710.6U CN208284068U (en) | 2018-06-13 | 2018-06-13 | A kind of fire-fighting alarm system in conjunction with security protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820918710.6U CN208284068U (en) | 2018-06-13 | 2018-06-13 | A kind of fire-fighting alarm system in conjunction with security protection |
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| Publication Number | Publication Date |
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| CN208284068U true CN208284068U (en) | 2018-12-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110187258A (en) * | 2019-05-13 | 2019-08-30 | 国网宁夏电力有限公司培训中心 | A kind of measure and control device remote control circuit tester |
| CN111934281A (en) * | 2020-08-10 | 2020-11-13 | 迈普通信技术股份有限公司 | Electronic equipment overtemperature protection circuit, electronic equipment and overtemperature protection control method |
| CN116749811A (en) * | 2023-08-10 | 2023-09-15 | 湖南艾德迅电气科技股份有限公司 | Intelligent charger for new energy automobile |
| WO2024001924A1 (en) * | 2022-06-30 | 2024-01-04 | 深圳市中兴微电子技术有限公司 | Temperature sensor, temperature sensor packaging method, and temperature measurement method |
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2018
- 2018-06-13 CN CN201820918710.6U patent/CN208284068U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187258A (en) * | 2019-05-13 | 2019-08-30 | 国网宁夏电力有限公司培训中心 | A kind of measure and control device remote control circuit tester |
| CN110187258B (en) * | 2019-05-13 | 2024-04-02 | 国网宁夏电力有限公司培训中心 | Remote control loop tester of measurement and control device |
| CN111934281A (en) * | 2020-08-10 | 2020-11-13 | 迈普通信技术股份有限公司 | Electronic equipment overtemperature protection circuit, electronic equipment and overtemperature protection control method |
| WO2024001924A1 (en) * | 2022-06-30 | 2024-01-04 | 深圳市中兴微电子技术有限公司 | Temperature sensor, temperature sensor packaging method, and temperature measurement method |
| CN116749811A (en) * | 2023-08-10 | 2023-09-15 | 湖南艾德迅电气科技股份有限公司 | Intelligent charger for new energy automobile |
| CN116749811B (en) * | 2023-08-10 | 2023-10-31 | 湖南艾德迅电气科技股份有限公司 | Intelligent charger for new energy automobile |
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