CN212541533U - Intelligent smoke alarm and control system thereof - Google Patents
Intelligent smoke alarm and control system thereof Download PDFInfo
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- CN212541533U CN212541533U CN202021154216.0U CN202021154216U CN212541533U CN 212541533 U CN212541533 U CN 212541533U CN 202021154216 U CN202021154216 U CN 202021154216U CN 212541533 U CN212541533 U CN 212541533U
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Abstract
The utility model relates to an intelligent smoke alarm and a control system thereof, wherein the control system is provided with an MCU control unit, a photoelectric detection unit, an alarm unit and an NB-IOT transmission unit; the input end of the MCU control unit is connected with the output end of the photoelectric detection unit, the output end of the MCU control unit is connected with the input end of the alarm unit, and the MCU control unit is powered by a lithium battery; the input end of the NB-IOT transmission unit is connected with the output end of the MCU control unit, and the NB-IOT transmission unit is in two-way communication with the cloud platform. The utility model provides a defect and the limitation of traditional alarm and short distance communication's alarm, rely on intelligent smoke alarm and the control system that NB-IOT technique and designed.
Description
Technical Field
The utility model relates to a smoke alarm's control technology, in particular to intelligence smoke alarm and control system thereof.
Background
With the increase of the domestic fire and the electricity consumption, the domestic fire frequently occurs. Once a family fire happens, the loss of lives and properties is caused easily, or the loss of life and properties is caused finally due to the lack of fire extinguishing equipment, scare and misbehavior of the bystanders, slow escape and other factors. The main cause of household fire is paralysis, and no preventive measures are found and taken in time.
The traditional alarm needs to integrally design and lay a special power supply control line, needs specific personnel to monitor at a specific place, lacks flexibility and mobility, and can not carry out data transmission and remote monitoring.
Some modern intelligent alarm devices of internet of things also rely on short-distance communication technologies such as Bluetooth and ZigBee, and the short-distance communication technologies all rely on wired network equipment and have strong limitations.
Disclosure of Invention
The utility model aims at overcoming the defect that prior art exists, providing one kind and having solved traditional alarm and short distance communication's alarm defect and limitation, rely on the intelligent smoke alarm and the control system that NB-IOT technique and design.
Realize the utility model discloses the technical scheme of purpose is: an intelligent smoke alarm control system is provided with an MCU control unit, a photoelectric detection unit, an alarm unit and an NB-IOT transmission unit; the input end of the MCU control unit is connected with the output end of the photoelectric detection unit, the output end of the MCU control unit is connected with the input end of the alarm unit, and the MCU control unit is powered by a lithium battery; the input end of the NB-IOT transmission unit is connected with the output end of the MCU control unit, and the NB-IOT transmission unit is in two-way communication with the cloud platform.
In the technical scheme, the MCU control unit is connected with the NB-IOT transmission unit through a serial port low-power consumption communication circuit; the serial port low-power consumption communication circuit comprises a sending circuit and a receiving circuit; the transmitting circuit comprises a triode Q1, a resistor R1 and a pull-up resistor R2; one end of the resistor R1 is connected with an external power supply VDD _ EXT, the other end of the resistor R1 is connected with the base electrode of the triode Q1, the collector electrode of the triode Q1 is connected with the pull-up resistor R2 and is also connected with the NB _ TXD end of the MCU control unit, and the emitter electrode of the triode Q1 is connected with the NB _ TXD _ T end of the NB-IOT transmission unit; the receiving circuit comprises a triode Q2, a resistor R3 and a pull-up resistor R4; one end of the resistor R3 is connected with a power supply VDD, and the other end is connected with the base electrode of the triode Q2; the collector of the triode Q2 is connected with an external power supply VDD _ EXT through a pull-up resistor R4 and is also connected with an NB _ RXD _ T end of the NB-IOT transmission unit, and the emitter of the triode Q2 is connected with an NB _ RXD end of the MCU control unit.
The NB-IOT transmission unit comprises an NB-IOT transmission chip and an SIM card slot; and the input end of the SIM card slot is electrically connected with the corresponding test point of the NB-IOT transmission chip.
The photoelectric detection unit in the technical scheme comprises a photodiode D1; the input and output ends of the electrical signal of the photodiode D1 are connected with the IrR + and IrR-ends of the MCU control unit, the anode of the optical signal of the photodiode D1 is connected with a power supply VDD through a resistor R5, and is grounded through a capacitor C1, and the cathode of the optical signal of the photodiode D1 is connected with the signal output current ISINK0 end of the MCU control unit.
According to the technical scheme, the alarm unit comprises an LED alarm circuit and a horn alarm circuit; the LED alarm circuit comprises an LED lamp connected with an LED display end of the MCU control unit; the horn alarm circuit comprises a Beep end connected with the MCU control unit.
An intelligent smoke alarm is provided with the intelligent smoke alarm control system and an optical maze; and an infrared transmitting tube and an infrared receiving tube are arranged in the optical labyrinth.
According to the technical scheme, the intelligent smoke alarm is powered by the external lithium battery, and is controlled to be switched on and off by shifting the switch.
After the technical scheme is adopted, the utility model discloses following positive effect has:
(1) the utility model discloses an intelligence smoke alarm is furnished with the lithium cell, but the independent utility need not to provide other powers, need not to work a telephone switchboard in addition, and it is very convenient to install. The intelligent smoke alarm adopts the photoelectric principle to detect the smoke concentration, and has high accuracy. The intelligent socket of the intelligent smoke alarm is based on the existing mobile communication network through the NB-IOT narrowband Internet of things technology, can achieve remote communication control without depending on a wired network, can send alarm signals in time, and plays a key role in the technical fire suppression.
(2) The intelligent smoke alarm of the utility model is internally provided with an optical maze which is provided with an infrared transmitting tube and an infrared receiving tube, and the infrared light of the infrared transmitting tube can not be received by the external receiving tube when no smoke exists; when smoke enters the optical maze, infrared light is received by the receiving tube through refraction and reflection, the MCU control unit judges whether the infrared light exceeds a threshold value, if the infrared light exceeds the threshold value, the MCU control unit sends out alarm sound and alarm lamp flicker through the alarm unit, meanwhile, the NB-IOT transmission unit sends smoke alarm to the background, and sends early warning short messages to a user bound with the smoke alarm, when the smoke state is lower than the threshold value, the MCU control unit judges that the alarm state is quitted, the alarm unit stops the alarm sound alarm lamp to quit the alarm flicker state, and meanwhile, the NB-LOT transmission unit sends a normal recovery instruction to the background.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a circuit diagram of the MCU control unit, the photoelectric detection unit and the alarm unit;
fig. 3 is a circuit diagram of a transmission circuit of the present invention;
fig. 4 is a circuit diagram of a receiving circuit of the present invention;
fig. 5 is a circuit diagram of a SIM card slot of the present invention;
fig. 6 is a chip diagram of the NB-IOT transmission unit according to the present invention.
Detailed Description
(example 1)
Referring to fig. 1 to 6, the utility model has an MCU control unit 1, a photoelectric detection unit 2, an alarm unit 3 and an NB-IOT transmission unit 4; the MCU control unit 1 adopts a BA45F5240-2 chip, the input end of the MCU control unit 1 is connected with the output end of the photoelectric detection unit 2, the output end of the MCU control unit 1 is connected with the input end of the alarm unit 3, the MCU control unit 1 is powered by a lithium battery 5 DC3.8V, the MCU controls the transmitting control circuit and the receiving control circuit of the photoelectric detection unit 2, so that the photoelectric detection unit 2 works normally, and the MCU control unit 1 receives the voltage to be detected provided by the photoelectric detection unit 2 and compares the voltage with a threshold value to judge whether to alarm or not; the NB-IOT transmission unit adopts an M5310-A chip, the NB-IOT transmission unit 4 is in bidirectional communication with the cloud platform 6, and the MCU control unit 1 is connected with the NB-IOT transmission unit 4 through a serial port low-power consumption communication circuit; the serial port low-power consumption communication circuit comprises a sending circuit and a receiving circuit; the transmitting circuit comprises a triode Q1, a resistor R1 and a pull-up resistor R2; one end of the resistor R1 is connected with an external power supply VDD _ EXT, the other end is connected with the base electrode of the triode Q1, the collector electrode of the triode Q1 is connected with the pull-up resistor R2 and is also connected with the NB _ TXD end of the MCU control unit 1, and the emitter electrode of the triode Q1 is connected with the NB _ TXD _ T end of the NB-IOT transmission unit 4; the receiving circuit comprises a triode Q2, a resistor R3 and a pull-up resistor R4; one end of the resistor R3 is connected with a power supply VDD, and the other end is connected with the base electrode of the triode Q2; the collector of the triode Q2 is connected with an external power supply VDD _ EXT through a pull-up resistor R4, and is also connected with an NB _ RXD _ T end of the NB-IOT transmission unit 4, and the emitter of the triode Q2 is connected with an NB _ RXD end of the MCU control unit 1.
The NB-IOT transmission unit 4 comprises an NB-IOT transmission chip and a SIM card slot; the input end of the SIM card slot is electrically connected with the corresponding test point of the NB-IOT transmission chip; the NB-IOT transmission chip is used for providing DC3.3V by a lithium battery power supply unit, the MCU control unit 1 transmits information of the intelligent smoke alarm to the NB-IOT transmission chip through a TXD transmission data pin, and the NB-IOT transmission chip transmits data (such as SIM card number, alarm state, wireless network signal quality and the like) transmitted by the MCU control unit 1 to a cloud platform by utilizing an antenna and a special network; the cloud platform sends response instruction information to the NB-IOT transmission chip, the NB-IOT transmission chip sends the received instruction information to the MCU control unit 1 through the RXD data receiving pin, and the cloud platform 6 is confirmed to successfully receive data transmitted by the MCU control unit 1; when network signals are poor or other problems, the MCU control unit 1 can reset the NB-IOT and re-network. The NB-IOT transport unit 4 may establish a connection with the corresponding cloud platform 6 through a corresponding protocol.
The photodetecting unit 2 includes a photodiode D1; the input and output ends of the electrical signal of the photodiode D1 are connected with the ends IrR + and IrR-of the MCU control unit 1, the anode of the optical signal of the photodiode D1 is connected with the power VDD through the resistor R5, and is grounded through the capacitor C1, and the cathode is connected with the end ISINK0 of the MCU control unit 1.
The alarm unit 3 comprises an LED alarm circuit and a horn alarm circuit; the LED alarm circuit comprises an LED lamp connected with an LED display end of the MCU control unit 1; the horn alarm circuit comprises a Beep end connected with the MCU control unit 1. DC3.3V is increased to the working voltage of the buzzer through the booster circuit, when the MCU control unit 1 judges that the alarm is needed, the booster circuit is controlled to supply power to the buzzer, and the buzzer sounds the alarm. The alarm LED lamp reflects the working state of the intelligent smoke alarm, for example, the LED flashes for three times after being electrified and then is turned off, the LED which is successfully connected with the network for the first time is turned off after being constantly turned on for 5 seconds, the LED continuously flashes when alarming, and the smoke state is always lower than a threshold value and flashes for one time in 60 seconds at regular intervals.
In the low power consumption communication circuit in this embodiment, the MCU control unit 1 wakes up once at a timing of about 5 seconds by using the low power consumption RTC of the chip, and rapidly detects the smoke concentration value after waking up, and immediately enters a deep sleep mode if the smoke concentration value is lower than a set value without alarming.
The MCU control unit 1 sends the smoke alarm times to the cloud platform 6 through the NB-IOT transmission chip regularly (every day), and the NB-IOT transmission chip enters a deep sleep mode under normal conditions without working.
(example 2)
An intelligent smoke alarm is provided with the intelligent smoke alarm control system in the embodiment 1 and an optical maze; an infrared transmitting tube and an infrared receiving tube are arranged in the optical maze. The intelligent smoke alarm is powered by an external lithium battery, and whether the power supply of the lithium battery is controlled by a toggle switch.
In this embodiment, intelligence smoke alarm can connect the reverse connection protection circuit, prevents that the lithium cell dress from objecting to the damage of intelligence smoke alarm.
The utility model discloses a theory of operation does: when no smoke exists, the external receiving tube cannot receive the infrared light of the infrared transmitting tube; when smoke enters the optical maze, infrared light is received by the receiving tube through refraction and reflection, the voltage to be detected is sent to the MCU control unit 1, the MCU control unit 1 judges whether the voltage exceeds a threshold value, if the voltage exceeds the threshold value, the MCU control unit 1 sends out alarm sound and alarm lamp flashing through the alarm unit, meanwhile, smoke alarm is sent to a background through the NB-IOT transmission unit, and early-warning short messages are sent to a user bound with the smoke alarm, when the smoke state is lower than the threshold value, the MCU control unit judges that the alarm state is quit, the alarm unit stops the alarm sound alarm lamp from quitting the alarm flashing state, and meanwhile, the NB-LOT transmission unit sends a normal recovery instruction to the background.
The bidirectional communication technology between the NB-LOT transmission unit and the cloud platform 6 is realized by adopting the existing communication protocol.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. An intelligence smoke alarm control system which characterized in that: the system is provided with an MCU control unit, a photoelectric detection unit, an alarm unit and an NB-IOT transmission unit; the input end of the MCU control unit is connected with the output end of the photoelectric detection unit, the output end of the MCU control unit is connected with the input end of the alarm unit, and the MCU control unit is powered by a lithium battery; the input end of the NB-IOT transmission unit is connected with the output end of the MCU control unit, and the NB-IOT transmission unit is in two-way communication with the cloud platform.
2. The intelligent smoke alarm control system of claim 1, wherein: the MCU control unit is connected with the NB-IOT transmission unit through a serial port low-power consumption communication circuit; the serial port low-power consumption communication circuit comprises a sending circuit and a receiving circuit; the transmitting circuit comprises a triode Q1, a resistor R1 and a pull-up resistor R2; one end of the resistor R1 is connected with an external power supply VDD _ EXT, the other end of the resistor R1 is connected with the base electrode of the triode Q1, the collector electrode of the triode Q1 is connected with the pull-up resistor R2 and is also connected with the NB _ TXD end of the MCU control unit, and the emitter electrode of the triode Q1 is connected with the NB _ TXD _ T end of the NB-IOT transmission unit; the receiving circuit comprises a triode Q2, a resistor R3 and a pull-up resistor R4; one end of the resistor R3 is connected with a power supply VDD, and the other end is connected with the base electrode of the triode Q2; the collector of the triode Q2 is connected with an external power supply VDD _ EXT through a pull-up resistor R4 and is also connected with an NB _ RXD _ T end of the NB-IOT transmission unit, and the emitter of the triode Q2 is connected with an NB _ RXD end of the MCU control unit.
3. The intelligent smoke alarm control system of claim 2, wherein: the NB-IOT transmission unit comprises an NB-IOT transmission chip and a SIM card slot; and the input end of the SIM card slot is electrically connected with the corresponding test point of the NB-IOT transmission chip.
4. The intelligent smoke alarm control system of claim 2 or 3, wherein: the photodetection unit includes a photodiode D1; the input and output ends of the electrical signal of the photodiode D1 are connected with the IrR + and IrR-ends of the MCU control unit, the anode of the optical signal of the photodiode D1 is connected with a power supply VDD through a resistor R5, and is grounded through a capacitor C1, and the cathode of the optical signal of the photodiode D1 is connected with the signal output current ISINK0 end of the MCU control unit.
5. The intelligent smoke alarm control system of claim 4, wherein: the alarm unit comprises an LED alarm circuit and a horn alarm circuit; the LED alarm circuit comprises an LED lamp connected with an LED display end of the MCU control unit; the horn alarm circuit comprises a Beep end connected with the MCU control unit.
6. An intelligent smoke alarm, its characterized in that: having an intelligent smoke alarm control system as claimed in any one of claims 1 to 5, and an optical maze; and an infrared transmitting tube and an infrared receiving tube are arranged in the optical labyrinth.
7. The intelligent smoke alarm of claim 6, wherein: the power is supplied by an external lithium battery and is controlled by a toggle switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021154216.0U CN212541533U (en) | 2020-06-20 | 2020-06-20 | Intelligent smoke alarm and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021154216.0U CN212541533U (en) | 2020-06-20 | 2020-06-20 | Intelligent smoke alarm and control system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212541533U true CN212541533U (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021154216.0U Active CN212541533U (en) | 2020-06-20 | 2020-06-20 | Intelligent smoke alarm and control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212541533U (en) |
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2020
- 2020-06-20 CN CN202021154216.0U patent/CN212541533U/en active Active
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