CN113112730B - Intelligent alarm device based on Internet of things - Google Patents
Intelligent alarm device based on Internet of things Download PDFInfo
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- CN113112730B CN113112730B CN202110367901.4A CN202110367901A CN113112730B CN 113112730 B CN113112730 B CN 113112730B CN 202110367901 A CN202110367901 A CN 202110367901A CN 113112730 B CN113112730 B CN 113112730B
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- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000008054 signal transmission Effects 0.000 claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 52
- 230000006641 stabilisation Effects 0.000 claims description 13
- 238000011105 stabilization Methods 0.000 claims description 13
- 230000009467 reduction Effects 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 4
- 230000006855 networking Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
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- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y20/00—Information sensed or collected by the things
- G16Y20/10—Information sensed or collected by the things relating to the environment, e.g. temperature; relating to location
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y30/00—IoT infrastructure
- G16Y30/10—Security thereof
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/10—Detection; Monitoring
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/50—Safety; Security of things, users, data or systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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Abstract
The invention discloses an intelligent alarm device based on the Internet of things, which consists of a fire detection unit, a signal transmission unit and an alarm equipment unit, and comprises: the undervoltage protection module is used for protecting the circuit when the input voltage is lower, and the undervoltage protection module detects the safety of the voltage and outputs the voltage to the temperature detection module; the temperature detection module is used for detecting the temperature information of the environment and feeding the temperature information back to the alarm module; the alarm module gives an alarm when the temperature information fed back is higher than or equal to the threshold value, and compared with the prior art, the invention has the beneficial effects that: the negative coefficient temperature-sensitive resistor is added in the voltage stabilizing process, so that the voltage of the voltage stabilizing circuit is effectively stabilized when the ambient temperature rises, the voltage fluctuation of the circuit is prevented, meanwhile, the amplifier is added to be used as a comparator, the working voltage of the circuit is ensured, when the input voltage is too low, the standby voltage supplies power, and the normal work of the loudspeaker under the fire condition is ensured.
Description
Technical Field
The invention relates to an alarm device, in particular to an intelligent alarm device based on the Internet of things.
Background
And a circuit for reporting the machine state or dangerous condition to the operator by the alarm device in a visual display or sound alarm mode. The electronic technology application of China is popularized in various fields. Wherein the alarm device is also widely used. In order to ensure the safety of life and property, smooth work and convenient life, the alarm device can not be left in many places and occasions, so the range of the alarm device is very wide and the variety is various. An alarm device is a circuit that reminds or warns people of certain actions in the form of sound, light, air pressure and the like in order to prevent or prevent the consequences caused by certain events. With the progress of science and technology, alarm devices have been applied to the fields of system failure, safety precaution, transportation, medical treatment and rescue, emergency disaster relief, induction detection and the like, and are inseparable from social production.
Fire alarm in the existing market often has the component voltage that makes the circuit rise when the temperature risees for the voltage change of circuit needs to be improved.
Disclosure of Invention
The invention aims to provide an intelligent alarm device based on the Internet of things, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an intelligence alarm device based on thing networking, includes fire detection unit, signal transmission unit, alarm equipment unit, signal processing unit, storage information unit, signal display element, teletransmission unit, remote client unit, fire detection unit connects signal transmission unit, and alarm equipment unit, signal processing unit are connected to signal transmission unit, signal processing unit, and signal processing unit connects storage information unit, signal display element, teletransmission unit, and remote client unit is connected to the teletransmission unit.
The fire detection unit, the signal transmission unit and the alarm equipment unit form alarm equipment and comprise a power supply module, a voltage reduction rectification filter module, a voltage stabilization module, an under-voltage protection module, a temperature detection module and an alarm module, wherein the power supply module is connected with the voltage reduction rectification filter module, the voltage reduction rectification filter module is connected with the voltage stabilization module, the voltage stabilization module is connected with the under-voltage protection module, the under-voltage protection module is connected with the temperature detection module, and the temperature detection module is connected with the alarm module.
The signal processing unit, the information storage unit, the signal display unit, the remote transmission unit and the remote client unit form the Internet of things equipment.
As a still further scheme of the invention: the voltage reduction rectification filtering module is composed of a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a capacitor C2, an inductor L1 and a switch S1, the voltage stabilization module is composed of a resistor R1, a resistor R2, a resistor R3, a resistor R4, a triode V1, a triode V2, a triode V3, a controllable precise voltage stabilization source D5, a potentiometer RP1, a temperature-sensitive resistor RW1 and a capacitor C3, the undervoltage protection module is composed of an amplifier U4, a potentiometer RP3, a resistor R8 and a voltage VCC, the temperature detection module is composed of a potentiometer RP2, a resistor R5 and a temperature-sensitive resistor RW2, and the alarm module is composed of an integrated circuit U1, an integrated circuit U2, an integrated circuit U3, a capacitor C4, a capacitor C5, a diode D6, a diode D7, a resistor R8 and a loudspeaker SPEAKER.
The input end of a transformer W is connected with a mains supply, one end of the output end of the transformer W is connected with the anode of a diode D1 and the cathode of a diode D3, the other end of the output end of the transformer W is connected with the anode of a diode D2 and the cathode of a diode D4, the cathode of the diode D1 is connected with the cathode of the diode D2, a capacitor C1 and an inductor L1, the anode of the diode D3 is connected with the anode of the diode D4, the other end of the capacitor C1 and the capacitor C2, the other end of the inductor L1 is connected with the other end of the capacitor C2 and a switch S1, the other end of the switch S1 is connected with a resistor R1, the collector of a triode V1, a resistor R2 and the collector of a triode V3, the other end of the resistor R1 is connected with the cathode of a controllable precise voltage stabilizing source D5 and the base of the triode V1, the emitter of the triode V1 is connected with the base of the triode V2, the emitter of the triode V2 is connected with the other end of the resistor R2 and the base of the triode V3, the emitter of the triode V3 is connected with the collector of the triode V2, the resistor R4, the capacitor C3, the in-phase end of the amplifier U4 and the power supply end of the amplifier U4, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected with the potentiometer RP1, the other end of the potentiometer RP1 is connected with the temperature-sensitive resistor RW1, the other end of the temperature-sensitive resistor RW1 is grounded, the sliding end of the potentiometer RP1 is connected with the resistor R3, the other end of the resistor R3 is connected with the reference electrode of the controllable precision voltage-stabilizing source D5, and the positive electrode of the controllable precision voltage-stabilizing source D5 is grounded.
The amplifier U4 is connected with a potentiometer RP3 at the inverting terminal, a resistor R8 is connected at the other end of the potentiometer RP3, a voltage VCC is connected at the other end of the resistor R8, the grounding terminal of the amplifier U4, the output terminal of the amplifier U4 is connected with a potentiometer RP2, the anode of a diode D6 and a loudspeaker SPEAKER, a resistor R5 is connected at the other end of the potentiometer RP2, the other end of the resistor R5 is connected with a temperature-sensitive resistor RW2 and the input terminal of an inverter U1, the other end of the temperature-sensitive resistor RW2 is grounded, the output terminal of the inverter U1 is connected with a capacitor C4 and a resistor R6, the other end of the capacitor C4 is grounded, the other end of the resistor R6 is connected with the anode of a diode D7, the cathode of the diode D7 is connected with the input terminals of the capacitor C5, the resistor R7 and the inverter U2, the other end of the capacitor C5 is grounded, the output terminal of the inverter U2 is connected with the other terminal of the resistor R7 and the input terminal of the inverter U3, and the output terminal of the inverter U3 is connected with the loudspeaker SPEAKER at the other terminal.
As a still further scheme of the invention: the power supply terminals of the integrated circuit U1, the integrated circuit U2 and the integrated circuit U3 are connected with the output terminal of the amplifier U4, and the grounding terminals of the integrated circuit U1, the integrated circuit U2 and the integrated circuit U3 are grounded. The voltage supply is ensured.
As a still further scheme of the invention: the model numbers of the integrated circuits U1, U2 and U3 are 74LS04. The effect of voltage inversion (inverter) is achieved.
As a still further scheme of the invention: the amplifier U4 is AD8606. The loudspeaker is protected to work in a proper working voltage range.
As a still further scheme of the invention: the temperature-sensitive resistor RW1 is a negative coefficient temperature-sensitive resistor, and the temperature-sensitive resistor RW2 is a positive coefficient temperature-sensitive resistor. The two can effectively offset the influence brought by the temperature change.
As a still further scheme of the invention: the capacitor C1, the capacitor C2 and the capacitor C3 are polar capacitors. For rapid discharge.
As a still further scheme of the invention: the diode D1, the diode D2, the diode D3, the diode D4 and the diode D7 are current limiting diodes, and the diode D6 is a light emitting diode. The current limiting diode limits the flowing direction of current, and the light emitting diode plays a role in prompting.
As a still further scheme of the invention: the triode V1, the triode V2 and the triode V3 are NPN triodes. For stabilizing the voltage of the circuit.
Compared with the prior art, the invention has the beneficial effects that: the negative coefficient temperature-sensitive resistor is added in the voltage stabilizing process, so that the voltage of the voltage stabilizing circuit is effectively stabilized when the ambient temperature rises, the voltage fluctuation of the circuit is prevented, meanwhile, the amplifier is added to be used as a comparator, the working voltage of the circuit is ensured, when the input voltage is too low, the standby voltage supplies power, and the normal work of the loudspeaker under the fire condition is ensured.
Drawings
Fig. 1 is a schematic diagram of an intelligent alarm device based on the internet of things.
Fig. 2 is a circuit diagram of an intelligent alarm device based on the internet of things.
Fig. 3 is a pin diagram of 74LS04.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1: referring to fig. 1, an intelligent alarm device based on the internet of things includes a fire detection unit for detecting whether a fire exists, a signal transmission unit for transmitting signals, an alarm device unit for sounding a speaker, a signal processing unit for processing signals, a storage information unit for storing related information, a signal display voltage for displaying transmission information, a remote transmission unit for outputting information to a remote device, and a remote client unit for receiving signals remotely, wherein the fire detection unit is connected with the signal transmission unit, the signal transmission unit is connected with the alarm device unit and the signal processing unit, the signal processing unit is connected with the storage information unit, the signal display unit and the remote transmission unit, and the remote transmission unit is connected with the remote client unit.
The fire detection unit, the signal transmission unit and the alarm device unit form alarm device, which is used for providing a power module of a power supply, a voltage reduction rectification filter module for obtaining temperature direct current, a voltage stabilization module for stabilizing circuit output voltage, an under-voltage protection module for protecting a circuit, a temperature detection module for detecting environmental temperature, and an alarm module for speaker chirping, wherein the power module is connected with the voltage reduction rectification filter module, the voltage reduction rectification filter module is connected with the voltage stabilization module, the voltage stabilization module is connected with the under-voltage protection module, the under-voltage protection module is connected with the temperature detection module, and the temperature detection module is connected with the alarm module.
The signal processing unit, the information storage unit, the signal display unit, the remote transmission unit and the remote client unit form the Internet of things equipment.
The specific circuit is as shown in fig. 2, the voltage-reducing rectifying-filtering module is composed of a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a capacitor C2, an inductor L1 and a switch S1, the voltage-stabilizing module is composed of a resistor R1, a resistor R2, a resistor R3, a resistor R4, a triode V1, a triode V2, a triode V3, a controllable precise voltage-stabilizing source D5, a potentiometer RP1, a temperature-sensitive resistor RW1 and a capacitor C3, the undervoltage protection module is composed of an amplifier U4, a potentiometer RP3, a resistor R8 and a voltage VCC, the temperature-detecting module is composed of a potentiometer RP2, a resistor R5 and a resistor RW2, and the alarm module is composed of an integrated circuit U1, a temperature-sensitive integrated circuit U2, an integrated circuit U3, a capacitor C4, a capacitor C5, a diode D6, a diode D7, a resistor R8 and a SPEAKER speak.
The input end of a transformer W is connected with a mains supply, one end of the output end of the transformer W is connected with the anode of a diode D1 and the cathode of a diode D3, the other end of the output end of the transformer W is connected with the anode of a diode D2 and the cathode of a diode D4, the cathode of the diode D1 is connected with the cathode of the diode D2, a capacitor C1 and an inductor L1, the diode D2, the diode D3 and the diode D4 form a bridge rectifier circuit to convert alternating current into direct current, the anode of the diode D3 is connected with the anode of the diode D4, the other end of the capacitor C1 and the capacitor C2, the other end of the inductor L1 is connected with the other end of the capacitor C2 and a switch S1, the other end of the switch S1 is connected with a resistor R1, the collector of a triode V1, a resistor R2 and the collector of the triode V3, the other end of the resistor R1 is connected with the cathode of a controllable precise voltage stabilizing source D5 and the base of the triode V1, the emitter of the triode V1 is connected with the base of the triode V2, the emitter of the triode V2 is connected with the other end of the resistor R2 and the base of the triode V3, the triodes V1, V2 and V3 are NPN triodes, the emitter of the triode V3 is connected with the collector of the triode V2, the resistor R4, the capacitor C3, the same-phase end of the amplifier U4 and the power supply end of the amplifier U4, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected with the potentiometer RP1, the other end of the potentiometer RP1 is connected with the temperature-sensitive resistor RW1, the temperature-sensitive resistor RW1 is a negative coefficient temperature-sensitive resistor, the other end of the temperature-sensitive resistor RW1 is grounded, the sliding end of the potentiometer RP1 is connected with the resistor R3, the other end of the resistor R3 is connected with the reference electrode of the controllable precision voltage-stabilizing source D5, and the positive electrode of the controllable precision voltage-stabilizing source D5 is grounded.
The amplifier U4 is connected with a potentiometer RP3 at an inverting terminal, the potentiometer RP3 is connected with a resistor R8 at the other end, the resistor R8 is connected with a voltage VCC at the other end, the amplifier U4 is connected with a grounding terminal, the amplifier U4 is connected with a potentiometer RP2 at an output terminal, the diode D6 is connected with an anode of the potentiometer RP2 and a SPEAKER SPEAKER at an output terminal, the potentiometer RP2 is connected with a resistor R5 at the other end, the resistor R5 is connected with a temperature-sensitive resistor RW2 at the other end, the inverter U1 is connected with an input terminal of the inverter U1 at the other end, the temperature-sensitive resistor RW2 is connected with an anode of the diode D7 at the other end, the capacitor C4 is connected with an output terminal of the inverter U1 at the other end, the capacitor R6 is connected with an anode of the diode D7 at the other end, the diode D7 is connected with a cathode of the capacitor C5, the resistor R7 and an input terminal of the inverter U2 at the other end, the output terminal of the inverter U2 is connected with an output terminal of the amplifier U3, the integrated circuit U1 is connected with a grounding terminal of the SPEAKER SPEAKER, and a grounding terminal of the integrated circuit U3.
The working principle of the invention is as follows: the switch S1 is closed, a mains supply is output to the triode V1 and the triode V3 through voltage reduction rectification filtering, the triode V1 and the triode V3 are conducted, then the triode V2 is conducted, the output voltage of the triode V3 is fixed after the three are conducted, when temperature emission changes, the output voltage of the triode V3 is reduced, the resistance value of the negative coefficient temperature-sensitive resistor RW1 is reduced, the reference electrode voltage of the controllable precise voltage-stabilizing source D5 is reduced, the negative electrode output voltage of the controllable precise voltage-stabilizing source D5 is reduced, the base voltage of the triode V1 is increased, further the conduction of the triode V2 is increased, the conduction of the triode V3 is increased, the output voltage of the triode V3 is increased, the voltage stabilization purpose is achieved, when the output voltage of the triode V3 is normal, the output voltage of the amplifier U4 (AD 8606) is the output voltage of the triode V3, and when the output voltage of the triode V3 is too small, the voltage on the output voltage VCC of the amplifier U1 is obtained, and the circuit voltage stabilization is ensured.
When a fire disaster does not happen, the resistance value of the positive coefficient temperature-sensitive resistor RW2 is small, the input end of the inverter U1 (74 LS 04) is at a low level, the output end of the inverter U1 is at a high level, so that the input end of the inverter U2 is at a high level, the output end of the inverter U3 is at a low level, and the output end of the inverter U3 is at a high level, the voltages applied to the two ends of the SPEAKER are equal, the SPEAKER does not work, when the ambient temperature rises, the device of the positive coefficient temperature sensitive resistor RW2 is increased, so that the input end of the inverter U1 is at a high level, the output end of the inverter U1 is at a low level, the input end of the inverter U2 is at a low level, the output end is high level, the high level of the output end of the inverter U2 causes the R7 to charge the capacitor C5, so that the voltage of the input end of the inverter U2 rises, when the high level requirement is met, the input end of the inverter U2 is high level, the output end is low level, the capacitor C5 discharges through the resistor R7, then, the voltage at the input end of the inverter U2 is reduced to a low level, and the above-mentioned operation is repeated, so that the inverter U2 outputs a square wave signal, and the inverter U3 outputs a square wave signal, so that the voltages applied to the two ends of the SPEAKER are changed, and the SPEAKER sounds.
When the voltage of the positive coefficient temperature-sensitive resistor RW2 rises to a threshold value, a signal is output to a processor to carry out a signal processing unit, the processor selects an ARM processor, meanwhile, fire information is stored (an information storage unit) and displayed (a signal display unit), then the signal is sent to a remote client unit through a remote transmission unit, and the remote transmission unit can adopt CH-DIG2S2 to achieve the purpose of remotely receiving the fire information.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides an intelligent alarm device based on thing networking which characterized in that:
fire detection unit, signal transmission unit, alarm device unit constitute intelligent alarm device, include:
the undervoltage protection module is used for protecting the circuit when the input voltage is lower and preventing the equipment from running under an undervoltage condition, the power supply module outputs stable direct current through the voltage reduction rectification filter module, the direct current outputs stable voltage through the voltage stabilization module and is supplied to the undervoltage protection module, and the undervoltage protection module outputs the voltage to the temperature detection module after detecting the voltage safety;
the temperature detection module is used for detecting the temperature information of the environment and feeding the temperature information back to the alarm module;
the alarm module is used for not giving an alarm when the temperature fed back by the alarm module is lower than a threshold value; when the temperature information fed back is higher than or equal to the threshold value, the alarm module gives an alarm;
the voltage reduction rectification filtering module is composed of a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a capacitor C2, an inductor L1 and a switch S1, the voltage stabilization module is composed of a resistor R1, a resistor R2, a resistor R3, a resistor R4, a triode V1, a triode V2, a triode V3, a controllable precise voltage stabilization source D5, a potentiometer RP1, a temperature-sensitive resistor RW1 and a capacitor C3, the undervoltage protection module is composed of an amplifier U4, a potentiometer RP3, a resistor R8 and a voltage VCC, the temperature detection module is composed of a potentiometer RP2, a resistor R5 and a temperature-sensitive resistor RW2, and the alarm module is composed of an integrated circuit U1, an integrated circuit U2, an integrated circuit U3, a capacitor C4, a capacitor C5, a diode D6, a diode D7, a resistor R8 and a loudspeaker SPEAKER;
the input end of a transformer W is connected with a mains supply, one end of the output end of the transformer W is connected with the anode of a diode D1 and the cathode of a diode D3, the other end of the output end of the transformer W is connected with the anode of a diode D2 and the cathode of a diode D4, the cathode of the diode D1 is connected with the cathode of the diode D2, a capacitor C1 and an inductor L1, the anode of the diode D3 is connected with the anode of the diode D4, the other end of the capacitor C1 and the capacitor C2, the other end of the inductor L1 is connected with the other end of the capacitor C2 and a switch S1, the other end of the switch S1 is connected with a resistor R1, a collector of a triode V1, a resistor R2 and a collector of a triode V3, the other end of the resistor R1 is connected with the cathode of a controllable precise voltage stabilizing source D5 and the base of the triode V1, the emitting electrode of the triode V1 is connected with the base electrode of the triode V2, the emitting electrode of the triode V2 is connected with the other end of the resistor R2 and the base electrode of the triode V3, the emitting electrode of the triode V3 is connected with the collecting electrode of the triode V2, the resistor R4, the capacitor C3, the in-phase end of the amplifier U4 and the power supply end of the amplifier U4, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected with the potentiometer RP1, the other end of the potentiometer RP1 is connected with the temperature-sensitive resistor RW1, the other end of the temperature-sensitive resistor RW1 is grounded, the sliding end of the potentiometer RP1 is connected with the resistor R3, the other end of the resistor R3 is connected with the reference electrode of the controllable precise voltage-stabilizing source D5, and the positive electrode of the controllable precise voltage-stabilizing source D5 is grounded;
the amplifier U4 is connected with a potentiometer RP3 at the inverting terminal, a resistor R8 is connected at the other end of the potentiometer RP3, a voltage VCC is connected at the other end of the resistor R8, the grounding terminal of the amplifier U4, the output terminal of the amplifier U4 is connected with a potentiometer RP2, the anode of a diode D6 and a loudspeaker SPEAKER, a resistor R5 is connected at the other end of the potentiometer RP2, the other end of the resistor R5 is connected with a temperature-sensitive resistor RW2 and the input terminal of an inverter U1, the other end of the temperature-sensitive resistor RW2 is grounded, the output terminal of the inverter U1 is connected with a capacitor C4 and a resistor R6, the other end of the capacitor C4 is grounded, the other end of the resistor R6 is connected with the anode of a diode D7, the cathode of the diode D7 is connected with the input terminals of the capacitor C5, the resistor R7 and the inverter U2, the other end of the capacitor C5 is grounded, the output terminal of the inverter U2 is connected with the other terminal of the resistor R7 and the input terminal of the inverter U3, and the output terminal of the inverter U3 is connected with the loudspeaker SPEAKER at the other terminal.
2. The intelligent alarm device based on the internet of things of claim 1, wherein power supply terminals of the integrated circuit U1, the integrated circuit U2 and the integrated circuit U3 are connected with the output terminal of the amplifier U4, and grounding terminals of the integrated circuit U1, the integrated circuit U2 and the integrated circuit U3 are grounded.
3. The intelligent alarm device based on the internet of things of claim 2, wherein the integrated circuit U1, the integrated circuit U2 and the integrated circuit U3 are 74LS04 in model number.
4. The intelligent alarm device based on the internet of things of claim 2, wherein the amplifier U4 is AD8606 in model number.
5. The intelligent alarm device based on the internet of things as claimed in claim 1, wherein the temperature-sensitive resistor RW1 is a negative coefficient temperature-sensitive resistor, and the temperature-sensitive resistor RW2 is a positive coefficient temperature-sensitive resistor.
6. The intelligent alarm device based on the internet of things as claimed in claim 1, wherein the capacitors C1, C2 and C3 are polar capacitors.
7. The intelligent alarm device based on the internet of things of claim 1, wherein the diodes D1, D2, D3, D4 and D7 are current limiting diodes, and the diode D6 is a light emitting diode.
8. The intelligent alarm device based on the internet of things of claim 1, wherein the triode V1, the triode V2 and the triode V3 are NPN triodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110367901.4A CN113112730B (en) | 2021-04-06 | 2021-04-06 | Intelligent alarm device based on Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110367901.4A CN113112730B (en) | 2021-04-06 | 2021-04-06 | Intelligent alarm device based on Internet of things |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113112730A CN113112730A (en) | 2021-07-13 |
| CN113112730B true CN113112730B (en) | 2022-11-01 |
Family
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5412374A (en) * | 1994-05-24 | 1995-05-02 | Clinton; Henry H. | Method and apparatus for detecting and indicating the location of a high temperature zone along the length of a fire detecting cable |
| CN204360507U (en) * | 2014-12-31 | 2015-05-27 | 广州瀚润计算机信息科技有限公司 | Wireless heat fire detector |
| CN204651888U (en) * | 2015-04-15 | 2015-09-16 | 国家电网公司 | A kind of Multi-functional safety electricity-using protection system |
| CN204759676U (en) * | 2015-07-23 | 2015-11-11 | 南京国电南自轨道交通工程有限公司 | Multiconfiguration electric fire monitors detector suitable for low -voltage distribution TT, TN system |
| CN105844835A (en) * | 2016-05-26 | 2016-08-10 | 郑州轻工业学院 | GPRS based intelligent fire-fighting alarm control system |
| CN205486614U (en) * | 2016-01-13 | 2016-08-17 | 赵东星 | Multipurpose fire alarm ware |
| CN208506927U (en) * | 2018-08-08 | 2019-02-15 | 成都格米利科技有限公司 | A kind of cigarette sense monitoring wireless terminal |
| CN210324480U (en) * | 2019-08-20 | 2020-04-14 | 江西三星气龙消防安全有限公司 | Fire control inspection communication system of bus |
| CN210348756U (en) * | 2019-07-30 | 2020-04-17 | 南京盈能环保电力科技有限公司 | Alarm circuit for intelligent power distribution comprehensive monitoring alarm device |
| CN212570011U (en) * | 2020-07-22 | 2021-02-19 | 杭州鼎毅电子科技有限公司 | Storage battery system fire detection device based on power line carrier communication |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69325852T2 (en) * | 1992-05-25 | 2000-01-27 | Nohmi Bosai Ltd | Fire detector |
| CN204423575U (en) * | 2015-02-09 | 2015-06-24 | 郑州骐骏电子科技有限公司 | A kind of electrical fire comprehensive protector |
| CN107093888A (en) * | 2017-05-10 | 2017-08-25 | 李亮棠 | Automatic reclosing protection switch with fire alarm defencive function |
| CN110992635A (en) * | 2019-12-28 | 2020-04-10 | 北京明日电力电子有限公司 | Intelligent power switch system for electrical fire monitoring based on NB-IOT communication technology |
-
2021
- 2021-04-06 CN CN202110367901.4A patent/CN113112730B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5412374A (en) * | 1994-05-24 | 1995-05-02 | Clinton; Henry H. | Method and apparatus for detecting and indicating the location of a high temperature zone along the length of a fire detecting cable |
| CN204360507U (en) * | 2014-12-31 | 2015-05-27 | 广州瀚润计算机信息科技有限公司 | Wireless heat fire detector |
| CN204651888U (en) * | 2015-04-15 | 2015-09-16 | 国家电网公司 | A kind of Multi-functional safety electricity-using protection system |
| CN204759676U (en) * | 2015-07-23 | 2015-11-11 | 南京国电南自轨道交通工程有限公司 | Multiconfiguration electric fire monitors detector suitable for low -voltage distribution TT, TN system |
| CN205486614U (en) * | 2016-01-13 | 2016-08-17 | 赵东星 | Multipurpose fire alarm ware |
| CN105844835A (en) * | 2016-05-26 | 2016-08-10 | 郑州轻工业学院 | GPRS based intelligent fire-fighting alarm control system |
| CN208506927U (en) * | 2018-08-08 | 2019-02-15 | 成都格米利科技有限公司 | A kind of cigarette sense monitoring wireless terminal |
| CN210348756U (en) * | 2019-07-30 | 2020-04-17 | 南京盈能环保电力科技有限公司 | Alarm circuit for intelligent power distribution comprehensive monitoring alarm device |
| CN210324480U (en) * | 2019-08-20 | 2020-04-14 | 江西三星气龙消防安全有限公司 | Fire control inspection communication system of bus |
| CN212570011U (en) * | 2020-07-22 | 2021-02-19 | 杭州鼎毅电子科技有限公司 | Storage battery system fire detection device based on power line carrier communication |
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| CN113112730A (en) | 2021-07-13 |
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