CN210574194U - Safety alarm device based on Internet of things - Google Patents
Safety alarm device based on Internet of things Download PDFInfo
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- CN210574194U CN210574194U CN201920708170.3U CN201920708170U CN210574194U CN 210574194 U CN210574194 U CN 210574194U CN 201920708170 U CN201920708170 U CN 201920708170U CN 210574194 U CN210574194 U CN 210574194U
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Abstract
Safety alarm device based on thing networking. The utility model relates to a safety alarm device based on thing networking. The positive surface of square shell body (1) sets up circular arch (2), circular arch (2) on a set of metal connecting rod (3) of equipartition, metal connecting rod (3) put into recess (7) of taking conducting metal layer (8), recess (7) equipartition around circular arch (2), the upper surface of metal connecting rod (3) set up arc insulating casing (3-1), metal connecting rod (3) switch-on sensor and singlechip U1, singlechip U1 set up in circular arch (2). The utility model can be applied to various tangible objects, is simple and convenient to use and is easy to operate.
Description
The technical field is as follows:
the utility model relates to a safety alarm device based on thing networking.
Background art:
the internet of things is a network which extends and expands the user end of the internet of things to any article for information exchange and communication.
The application range is wide in practical use, the 'object' is tangible, the safety requirements are different, some need to be fireproof, some need to be shockproof, and some need to be moderate in temperature and humidity, so that the safety alarm device which is universal in the Internet of things can be related, the safety alarm device is simple and convenient to use, and safety alarm can be completed only through a plurality of steps.
The invention content is as follows:
the utility model aims at providing a safety alarm device based on thing networking can use on each tangible "thing", and is simple and convenient during the use, easily operation.
The above purpose is realized by the following technical scheme:
a safety alarm device based on the Internet of things is characterized in that a circular bulge 2 is arranged on the front surface of a square outer shell 1, a group of metal connecting rods 3 are uniformly distributed on the circular bulge 2, the metal connecting rods 3 are placed in grooves 7 with conductive metal layers 8, the grooves 7 are uniformly distributed around the circular bulge 2, an arc-shaped insulating shell 3-1 is arranged on the upper surface of each metal connecting rod 3, each metal connecting rod 3 is connected with a sensor and a single chip microcomputer U1, the single chip microcomputer U1 is arranged in the circular bulge 2,
four corners of the square outer shell 1 are respectively provided with two indicating lamps 4 and two buzzers 5, each metal connecting rod 3 is provided with an insulating T-shaped bulge 6, and the T-shaped bulge 6 is arranged around the circle center of the circular bulge 2.
Further, the singlechip U1 in the circular bulge 2 receives signals of the smoke sensor, the vibration sensor, the combustible gas sensor, the temperature sensor and the humidity sensor, and the singlechip U1 controls the alarm circuit.
Has the advantages that:
1. the utility model discloses according to the different sensors of demand switch-on of different "thing", guarantee its safe convenient use.
2. The utility model discloses an arc insulating casing guarantees the no leakage of electricity, can not hurt the mankind on electrically conductive object or the great object of humidity.
3. The utility model discloses a conductive metal layer cooperation metal connecting rod uses, guarantees the electric conductance of sensor and singlechip U1, conveniently monitors corresponding data.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of fig. 1.
Fig. 3 is a logic signal diagram of the present invention.
Fig. 4 is an alarm circuit diagram of the present invention.
Fig. 5 is a circuit diagram of the smoke sensor of the present invention.
Fig. 6 is a circuit diagram of a two-way differential comparator circuit diagram of a vibration sensor (a) according to the present invention and a circuit diagram of a vibration sensor (b).
Fig. 7 is a circuit diagram of the combustible gas sensor of the present invention.
Fig. 8 is a circuit diagram of the temperature sensor of the present invention.
Fig. 9 is a circuit diagram of the humidity sensor of the present invention.
Fig. 10 is a circuit diagram of (a) the single chip microcomputer U1 and (b) reset of the present invention.
The specific implementation mode is as follows:
a safety alarm device based on the Internet of things is characterized in that a circular bulge 2 is arranged on the front surface of a square outer shell 1, a group of metal connecting rods 3 are uniformly distributed on the circular bulge 2, the metal connecting rods 3 are placed in grooves 7 with conductive metal layers 8, the grooves 7 are uniformly distributed around the circular bulge 2, an arc-shaped insulating shell 3-1 is arranged on the upper surface of each metal connecting rod 3, each metal connecting rod 3 is connected with a sensor and a single chip microcomputer U1, the single chip microcomputer U1 is arranged in the circular bulge 2,
four corners of the square outer shell 1 are respectively provided with two indicating lamps 4 and two buzzers 5, each metal connecting rod 3 is provided with an insulating T-shaped bulge 6, and the T-shaped bulge 6 is arranged around the circle center of the circular bulge 2.
Further, the singlechip U1 in the circular bulge 2 receives signals of the smoke sensor, the vibration sensor, the combustible gas sensor, the temperature sensor and the humidity sensor, and the singlechip U1 controls the alarm circuit.
Furthermore, the PA15 end of the singlechip U1 is connected with one end of a resistor R9, the other end of the resistor R9 is connected with the base b of a triode VT5, the emitter e of the triode VT5 is connected with one end of a resistor R12,
the PA14 end of the singlechip U1 is connected with one end of a resistor R10, the other end of the resistor R10 is connected with the base b of a triode VT6, the emitter e of the triode VT6 is connected with one end of a resistor R11,
the PA13 end of the singlechip U1 is connected with one end of a resistor R8, the other end of the resistor R8 is connected with the base b of a triode VT7, the emitter e of the triode VT7 is connected with one end of a resistor R14,
the collector c of the transistor VT5 is connected to one end of the light emitting diode L green,
the collector c of the triode VT6 is connected with one end of the light emitting diode L red, the other end of the light emitting diode L green is connected with the other end of the light emitting diode L red and is connected with one end of the alarm BELL BELL and the working voltage VCC, the collector c of the triode VT7 is connected with the other end of the alarm BELL BELL,
the other end of the resistor R12 is connected with the other end of the resistor R10 and the other end of the resistor R8 and then grounded.
The alarm indicator light L green is realized by controlling the on-off of VT5 through square waves at the PA15 end of the singlechip U1, the alarm indicator light L red is realized by controlling the on-off of VT6 through square waves at the PA14 end of the singlechip U1, when the PA14 end of the singlechip U1 and the PA13 end of the singlechip U1 are in a position, VT6 and VT7 are both switched on at the moment, the L red alarm light is on, the alarm BELL BELL gives an alarm, when the PA14 end of the singlechip U1 and the PA13 end of the singlechip U1 are cleared, VT6 and VT7 are both switched off at the moment, the L red alarm light is not on, and the alarm BELL BELL is off for alarming.
Furthermore, the No. 1 end of the smoke sensor is connected with an overvoltage +5V, one end and a third end of a slide rheostat R21, the No. 2 end of the smoke sensor is connected with the No. 4 end of the smoke sensor, one end of a resistor R22, one end of a switch K1, one end of a resistor R20 and a ground end,
the other end of the resistor R22 is connected with the positive input end of the comparator A1, the other end of the resistor R22 is connected with the other end of the slide rheostat R21, the other end of the switch K1, the other end of the resistor R20 and the negative input end of the comparator A1,
the output end of the comparator A1 is connected with the PB13 end of the singlechip U1.
The smoke sensor has the model of MQ-2, wide detection range, high sensitivity, quick response, excellent stability, long service life, simple structure of the driving circuit and good stability. When no smoke signal is detected, the comparator outputs a low level to the single chip microcomputer U1, and when no smoke signal is detected, the comparator outputs a high level to the single chip microcomputer U1 in a penetrating mode, and the level is higher than the level of + 5V.
Further, the end 1 of the interface P1 of the vibration sensor is connected to the PD4 end of the single chip microcomputer U1, the end 3 of the chip U3, the end of the capacitor C2, the end of the vibration switch K2 and the end of the resistor R32, the end 2 of the interface P1 is connected to the end of the resistor R26, the end of the resistor R27 and the end 1 of the chip U3, the end 3 of the interface P1 is connected to the end of the resistor R25, the end 4 of the interface P1 is connected to the end of the diode D1, the end of the diode D2, the other end of the resistor R27 and the end of the resistor R28, the other end of the resistor R28 is grounded, the other end of the diode D1 is connected to the other end of the resistor R25, and the other end of the diode D2 is connected to the other end of the resistor R26,
resistance R32's the other end connect and connect operating voltage VCC, vibrations switch K2's other end ground connection, electric capacity C2's other end ground connection, chip U3's No. 4 termination ground, chip U3's No. 8 end connect electric capacity C1's one end and operating voltage VCC, electric capacity C1's other end ground connection.
The vibration switch K2 is SW-18015P, the sensitivity is high, the vibration is sensitive to the environment, when the vibration does not reach the threshold value, the interface P1 outputs high level to the singlechip U1, otherwise, the low level is opposite.
Further, the end a of the combustible gas sensor is connected to the VCCA end of the single chip microcomputer U1, the end a of the combustible gas sensor is connected to the VSSA end of the single chip microcomputer U1, the end a of the combustible gas sensor is connected to one end of the resistor R2 and the collector c of the transistor VT1, the end B of the combustible gas sensor is connected to one end of the resistor R3 and the collector c of the transistor VT2, the variable resistor RP3 is connected in series between the emitter e of the transistor VT1 and the emitter e of the transistor VT2, the base B of the transistor VT1 is connected to one end of the gas sensing element RQ and one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R5, the third end of the variable resistor 39rp 38 and one end of the voltage UG, the other end of the gas sensing element RQ is connected to one end of the variable resistor RP1, the other end of the resistor R5 is connected to one end of the base B of the transistor 2 and one end of the resistor, the other end of the resistor R4 is connected with one end and a third end of the variable resistor RP2, the other end of the variable resistor RP2 is connected with the other end of the resistor R3, the other end of the resistor R2, one end of the switch S2, one end of the voltage UR and one end of the gas sensing element RQ,
the other end of the voltage UR is connected with the other end and the third end of the variable resistor RP1,
the other end of the switch S2 is connected with the other end of the voltage UG.
In the figure, VT1 and VT2 form a differential amplifying circuit, a switch S1 is closed, a gas sensor RQ is preheated, then S2 is closed, RP2 is adjusted in clean air to enable bases of VT1 and VT2 to be equal to ground potential, and RP3 is adjusted to enable collector potential difference of VT1 and VT2 to be 0.
When the gas sensor RQ is contacted with leaked gas, the base electrode potential of the VT1 with tissue change is correspondingly changed, the differential circuit works, and the output end is provided with voltage UAB for output.
Further, one end of a resistor R30 of the temperature sensor is connected with an I/O port of the single chip microcomputer U1 and a DQ end of the chip U4, the other end of the resistor R30 is connected with a working voltage VCC, the connection is made, the VDD end of the chip U4 is connected with the working voltage VDD, and the DQ end of the chip U4 can be connected with the DQ ends { at most 8 } of the temperature chip in parallel.
Because the single bus is open-drain, a pull-up resistor R30 needs to be externally connected, and a plurality of temperature chips can be connected in parallel.
Furthermore, the No. 4 end of the chip U5 of humidity sensor connect No. 8 end of chip U5, one end and operating voltage VCC of resistance R15, the other end of resistance R15 connect No. 7 end and one end of resistance R17 of chip U5, the other end of resistance R17 connect No. 2 end of chip U5, No. 6 end and the one end of humidity-sensitive capacitor C3 of chip U5, the other end of humidity-sensitive capacitor C3 connect No. 1 end of chip U5, one end and the earthing terminal of resistance R18, the other end of resistance R18 connect No. 5 end of chip U5, No. 3 end of chip U5 connect a singlechip PE11 behind the series-connection resistance R16.
An external resistor R15 and an external resistor R17 of the integrated timer 555 and a humidity-sensitive capacitor C3 form a charging loop for C3, a 7 end forms a discharging loop for C3 through a transistor in a gasket in a short circuit to the ground, and pins 2 and 6 are connected and introduced into an on-chip comparator, so that a multivibrator, namely a square wave generator is formed, R16 is a short-circuit protection resistor, and R18 is a balanced temperature coefficient.
The supply of voltage is available from existing power supply circuits, prior art.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a safety alarm device based on thing networking which characterized by: the front surface of the square outer shell (1) is provided with circular bulges (2), a group of metal connecting rods (3) are uniformly distributed on the circular bulges (2), the metal connecting rods (3) are placed into grooves (7) with conductive metal layers (8), the grooves (7) are uniformly distributed around the circular bulges (2), the upper surface of each metal connecting rod (3) is provided with an arc-shaped insulating shell (3-1), the metal connecting rods (3) are communicated with a sensor and a singlechip U1, the singlechip U1 is arranged in the circular bulges (2),
the four corners of square shell body (1) set up two pilot lamps (4) and two bee calling organ (5) respectively, every metal connecting rod (3) on all set up an insulating T shape protruding (6), T shape protruding (6) around the centre of a circle setting of circular arch (2).
2. The internet of things-based security alarm device of claim 1, wherein: the single chip microcomputer U1 in the circular protrusion (2) receives signals of the smoke sensor, the vibration sensor, the combustible gas sensor, the temperature sensor and the humidity sensor, and the single chip microcomputer U1 controls the alarm circuit.
3. The internet of things-based security alarm device of claim 2, wherein: the PA15 end of the singlechip U1 is connected with one end of a resistor R9, the other end of the resistor R9 is connected with the base b of a triode VT5, the emitter e of the triode VT5 is connected with one end of a resistor R12,
the PA14 end of the singlechip U1 is connected with one end of a resistor R10, the other end of the resistor R10 is connected with the base b of a triode VT6, the emitter e of the triode VT6 is connected with one end of a resistor R11,
the PA13 end of the singlechip U1 is connected with one end of a resistor R8, the other end of the resistor R8 is connected with the base b of a triode VT7, the emitter e of the triode VT7 is connected with one end of a resistor R14,
the collector c of the transistor VT5 is connected to one end of the light emitting diode L green,
the collector c of the triode VT6 is connected with one end of the light emitting diode L red, the other end of the light emitting diode L green is connected with the other end of the light emitting diode L red and is connected with one end of the alarm BELL BELL and the working voltage VCC, the collector c of the triode VT7 is connected with the other end of the alarm BELL BELL,
the other end of the resistor R12 is connected with the other end of the resistor R10 and the other end of the resistor R8 and then grounded.
4. The internet of things-based security alarm device of claim 1, wherein: the No. 1 end of the smoke sensor is connected with an overvoltage +5V, one end and a third end of a slide rheostat R21, the No. 2 end of the smoke sensor is connected with the No. 4 end of the smoke sensor, one end of a resistor R22, one end of a switch K1, one end of a resistor R20 and a ground end,
the other end of the resistor R22 is connected with the positive input end of the comparator A1, the other end of the resistor R22 is connected with the other end of the slide rheostat R21, the other end of the switch K1, the other end of the resistor R20 and the negative input end of the comparator A1,
the output end of the comparator A1 is connected with the PB13 end of the singlechip U1.
5. The internet of things-based security alarm device of claim 1, wherein: the end 1 of an interface P1 of the vibration sensor is connected with the PD4 end of a singlechip U1, the end 3 of a chip U3, one end of a capacitor C2, one end of a vibration switch K2 and one end of a resistor R32, the end 2 of the interface P1 is connected with one end of a resistor R26, one end of a resistor R27 and the end 1 of the chip U3, the end 3 of the interface P1 is connected with one end of the resistor R25, the end 4 of the interface P1 is connected with one end of a diode D1, one end of a diode D2, the other end of a resistor R27 and one end of the resistor R28, the other end of the resistor R28 is grounded, the other end of the diode D1 is connected with the other end of the resistor R25, the other end of the diode D2 is connected with the other end of the resistor R26,
resistance R32's the other end connect and connect operating voltage VCC, vibrations switch K2's other end ground connection, electric capacity C2's other end ground connection, chip U3's No. 4 termination ground, chip U3's No. 8 end connect electric capacity C1's one end and operating voltage VCC, electric capacity C1's other end ground connection.
6. The internet of things-based security alarm device of claim 1, wherein: the A end of the combustible gas sensor is connected with the VCCA end of the singlechip U1, the A end of the combustible gas sensor is connected with the VSSA end of the singlechip U1, the A end of the combustible gas sensor is connected with one end of a resistor R2 and the collector c of a triode VT1, the B end of the combustible gas sensor is connected with one end of the resistor R3 and the collector c of a triode VT2, a variable resistor RP3 is connected between the emitter e of the triode VT1 and the emitter e of the triode VT2 in series, the base B of the triode VT1 is connected with one end of a gas sensing element RQ and one end of a resistor R1, the other end of the resistor R1 is connected with one end of the resistor R5, the third end of the variable resistor RP3 and one end of voltage UG, the other end of the gas sensing element RQ is connected with one end of a variable resistor RP1, the other end of the resistor R5 is connected with the base B of the triode VT2 and one end of the resistor R4, the other end of the resistor R4 is connected with one end and a third end of the variable resistor RP2, the other end of the variable resistor RP2 is connected with the other end of the resistor R3, the other end of the resistor R2, one end of the switch S2, one end of the voltage UR and one end of the gas sensing element RQ,
the other end of the voltage UR is connected with the other end and the third end of the variable resistor RP1,
the other end of the switch S2 is connected with the other end of the voltage UG.
7. The internet of things-based security alarm device of claim 1, wherein: one end of a resistor R30 of the temperature sensor is connected with an I/O port of the singlechip U1 and a DQ end of the chip U4, the other end of the resistor R30 is connected with a working voltage VCC, the connection is realized, the VDD end of the chip U4 is connected with the working voltage VDD, and the DQ end of the chip U4 can be connected with the DQ end of the temperature chip in parallel.
8. The internet of things-based security alarm device of claim 1, wherein: the end 4 of a chip U5 of the humidity sensor is connected with an end 8 of a chip U5, one end of a resistor R15 and a working voltage VCC, the other end of the resistor R15 is connected with an end 7 of the chip U5 and one end of a resistor R17, the other end of the resistor R17 is connected with an end 2 of the chip U5, an end 6 of the chip U5 and one end of a humidity-sensitive capacitor C3, the other end of the humidity-sensitive capacitor C3 is connected with an end 1 of the chip U5, one end of a resistor R18 and a grounding end, the other end of the resistor R18 is connected with an end 5 of the chip U5, and the end 3 of the chip U5 is connected with a series resistor R16 and then connected with a singlechip PE 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920708170.3U CN210574194U (en) | 2019-05-16 | 2019-05-16 | Safety alarm device based on Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920708170.3U CN210574194U (en) | 2019-05-16 | 2019-05-16 | Safety alarm device based on Internet of things |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210574194U true CN210574194U (en) | 2020-05-19 |
Family
ID=70635796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920708170.3U Expired - Fee Related CN210574194U (en) | 2019-05-16 | 2019-05-16 | Safety alarm device based on Internet of things |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210574194U (en) |
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2019
- 2019-05-16 CN CN201920708170.3U patent/CN210574194U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 Termination date: 20210516 |