CN215814424U - Wireless smoke alarm detector - Google Patents
Wireless smoke alarm detector Download PDFInfo
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- CN215814424U CN215814424U CN202121139785.2U CN202121139785U CN215814424U CN 215814424 U CN215814424 U CN 215814424U CN 202121139785 U CN202121139785 U CN 202121139785U CN 215814424 U CN215814424 U CN 215814424U
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Abstract
The utility model discloses a wireless smoke alarm detector which comprises a main control circuit arranged in the detector, wherein the main control circuit is connected with a smoke sensor circuit for detecting smoke, a buzzer driving circuit for driving a buzzer to alarm when smoke is detected or the battery power is low, and an LORA wireless communication circuit for wirelessly connecting with a server.
Description
[ technical field ]
The utility model relates to a wireless smoke alarm detector.
[ background art ]
The existing smoke alarm detectors mostly work independently and do not have a networking function, so that a fireproof alarm network cannot be established as a node in the Internet of things, and part of the networking smoke alarm detectors need to be externally connected with a communication line and need to be arranged at installation positions according to wiring, so that the installation is inconvenient; meanwhile, the conventional smoke alarm detector is easy to cause the influence of disturbing residents due to false alarm.
[ contents of utility model ]
The utility model overcomes the defects of the technology and provides a wireless smoke alarm detector.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a wireless smoke alarm detector, its characterized in that: including setting up the main control circuit in the detector, main control circuit is connected with the smoke transducer circuit that is used for detecting smog, be used for when detecting smog or battery power low drive bee calling organ drive circuit that the bee calling organ reported to the police, be used for with server wireless connection's LORA wireless communication circuit, main control circuit is connected with the battery power supply input circuit who is used for the power supply, main control circuit is connected with the battery power detection circuitry who is used for detecting battery power.
A wireless smoke alarm detector as above, characterized in that: the main control circuit is connected with a temperature sensor circuit.
A wireless smoke alarm detector as above, characterized in that: the main control circuit is connected with an indicator light circuit for light alarm prompt, and the main control circuit is connected with a key circuit for inputting control instructions.
A wireless smoke alarm detector as above, characterized in that: the main control circuit is connected with an address setting circuit for setting the address of the detector and a programming interface for burning programs.
A wireless smoke alarm detector as above, characterized in that: the LORA wireless communication circuit comprises a wireless communication chip U7, a pin 1 of a U7 of the wireless communication chip is grounded, a pin 2 of a U7 of the wireless communication chip is respectively connected with a drain end of a field effect transistor Q9 and one end of a resistor R47, a source end of the field effect transistor Q9 is respectively connected with one end of a resistor R30 and a main control circuit, the other end of the resistor R30 is respectively connected with one end of a resistor R31, one end of a resistor R34, one end of a resistor R36, one end of a resistor R38, one end of the field effect transistor Q14 and a pin 13 of the wireless communication chip U7, the other end of the resistor R47 and a gate end of the field effect transistor Q9 are respectively connected with a battery power supply input circuit, a pin 3 of the U7 of the wireless communication chip is respectively connected with the other end of the resistor R38 and a collector of a triode Q12, a base of a triode Q12 is respectively connected with one end of the resistor R25 and one end of the resistor R35, the other end of the resistor R35 is connected with a circuit, an emitter of the triode Q12 and the other end of the resistor R25 are respectively grounded, pin 4 of a wireless communication chip U7 is respectively connected with the other end of a resistor R36 and a collector of a triode Q10, a base of the triode Q10 is respectively connected with one end of a resistor R41 and one end of a resistor R37, the other end of the resistor R37 is connected with a main control circuit, an emitter of the triode Q10 and the other end of the resistor R41 are respectively grounded, pin 5 of the wireless communication chip U7 is respectively connected with the other end of a resistor R34 and the collector of the triode Q8, a base of the triode Q8 is respectively connected with one end of a resistor R33 and one end of a resistor R42, the other end of the resistor R33 is connected with the main control circuit, an emitter of a triode Q8 and the other end of a resistor R42 are respectively grounded, pin 6 of the wireless communication chip U7 is connected with the collector of a triode Q7, a base of the transistor Q7 is respectively connected with one end of a resistor R40 and one end of a resistor R39, the other end of a resistor R40 is connected with the main control circuit, an emitter of a transistor Q7 and the other end of the resistor R39 is respectively grounded, a pin 8 of the wireless communication chip U7 is respectively grounded, the pin 9 of the wireless communication chip U7 is respectively connected with one end of a capacitor C21 and one end of an inductor L5, the other end of the inductor L5 is respectively connected with one end of a capacitor C22 and an antenna ANT1, the other end of a capacitor C21, the other end of a capacitor C22 and the pin 10 of the wireless communication chip U7 are respectively grounded, the pin 13 of the wireless communication chip U7 is respectively connected with the positive electrode end of an electrolytic capacitor EC2, one end of a capacitor C19 and one end of a capacitor C18, one end of an inductor L3 is connected, the other end of the inductor L3 is connected with a battery power supply VBAT, one end of an inductor L4 is grounded, the other end of the inductor L4 is connected with the other end of a capacitor C18, the other end of the capacitor C19 and the negative end of an electrolytic capacitor EC2 respectively and is connected with the ground, a pin 14 of a U7 of the wireless communication chip is connected with one end of a resistor R32 and the drain end of a field effect transistor Q11 respectively, the source end of the field effect transistor Q11 is connected with the other end of a resistor R31 and a main control circuit respectively, and the gate end of the field effect transistor Q11 and the other end of the resistor R32 are connected with a battery power supply input circuit respectively.
A wireless smoke alarm detector as above, characterized in that: the smoke sensor circuit comprises a smoke sensor U2, a pin 4 of the smoke sensor U2 is respectively connected with the positive terminal of an electrolytic capacitor EC1 and one end of a resistor R12, the negative terminal of the electrolytic capacitor EC1 is grounded, the other end of the resistor R12 is connected with the output terminal of a battery power supply input circuit, a pin 3 of the smoke sensor U2 is respectively connected with the collector of a triode Q1 and the collector of a triode Q2, the emitter of the triode Q1 is grounded through a resistor R13, the base of the triode Q1 is connected with the emitter of a triode Q2, the base of the triode Q2 is respectively connected with one end of a resistor R14 and one end of a resistor R11, the other end of a resistor R14 is grounded, the other end of the resistor R11 is used as a test point T4, a pin 1 of the smoke sensor U2 is respectively connected with one end of a pin 3 of an operational amplifier U1.1, one end of a resistor R1 and one end of a capacitor C1, the other end of a capacitor C1 is respectively connected with the other end of a pin of a resistor R1, a pin 1.1, a capacitor C4 and an amplifier U8 is grounded, pin 4 of operational amplifier U1.1 is connected with main control circuit, pin 2 of smoke sensor U2 is connected with one end of resistor R5 and pin 2 of operational amplifier U1.1, the other end of resistor R5 is connected with one end of resistor R8 and one end of resistor R10, the other end of resistor R8 is connected with main control circuit, the other end of resistor R10 is grounded, the other end of capacitor C4 is connected with one end of capacitor C2, one end of resistor R2 and one end of resistor R6, the other end of capacitor C2 is grounded, the other end of resistor R6 is grounded, the other end of resistor R2 is connected with one end of resistor R7 and pin 6 of operational amplifier U1.2, the other end of resistor R7 is grounded, pin 5 of operational amplifier U1.2 is connected with one end of resistor R9 and one end of capacitor C5, pin 7 of operational amplifier U1.2 is connected with one end of resistor R9, the other end of capacitor C5 and pin R3, the other end of resistor R3 is connected with one end of capacitor C3, another end of resistor R4 and capacitor 3, the other end of the resistor R4 is connected with the main control circuit.
A wireless smoke alarm detector as above, characterized in that: the buzzer driving circuit comprises a connecting terminal SPK1 and a driving chip U5 which are connected with a buzzer, a pin 1 of a U5 of the driving chip and a pin 12 of the U5 of the driving chip are respectively connected with one end of a capacitor C13 and a battery power supply VBAT, the other end of the capacitor C13 and a pin 6 of a U5 of the driving chip are respectively grounded, a pin 2 of the U5 of the driving chip is connected with a main control circuit, a pin 3 of the U5 of the driving chip is respectively connected with one end of a resistor R21 and the pin 1 of the connecting terminal SPK1, the other end of the resistor R21 is respectively connected with a pin 5 of the U5 of the driving chip, one end of a capacitor C9 and one end of a resistor R22, the other end of the resistor R22 is connected with a pin 3 of the connecting terminal SPK1, a pin 4 of the U5 of the driving chip is respectively connected with the other end of a capacitor C9 and the pin 2 of the connecting terminal SPK1, and a pin 7 of the U5 of the driving chip is grounded through a capacitor C10.
A wireless smoke alarm detector as above, characterized in that: the battery power supply input circuit comprises a boosting chip U4, wherein the input end of the boosting chip U4 is respectively connected with one end of a capacitor C7, one end of a capacitor C17, a battery power supply VBAT, the cathode end of a diode D1 and one end of a fuse F1, the other end of a capacitor C7, the other end of a capacitor C17 and the anode end of a diode D1 are respectively grounded, the other end of a fuse F1 is connected with an anti-reverse connector BATIN pin 2, an anti-reverse connector BATIN pin 1 is grounded, the ground end of the boosting chip U4 is grounded, the output end of the boosting chip U4 is respectively connected with one end of a capacitor C8, one end of a capacitor C15 and one end of an inductor L1, the other end of an inductor L1 is used as the output power supply VCC of the battery power supply input circuit and is connected with one end of a capacitor C16, the other end of the capacitor C8, the other end of the capacitor C15 and the other end of the capacitor C16 are respectively grounded, and an inductor L2 is connected between the other end of a capacitor C15 and the other end of a capacitor C16.
A wireless smoke alarm detector as above, characterized in that: the battery power detection circuit comprises a field effect transistor Q4, wherein a source terminal of the field effect transistor Q4 is respectively connected with one end of a resistor R23 and a battery power supply VBAT, a grid terminal of the field effect transistor Q4 is respectively connected with the other end of the resistor R23 and one end of a resistor R24, the other end of the resistor R24 is connected with a collector of a triode Q3, an emitter of the triode Q3 is grounded, a base of a triode Q3 is respectively connected with one end of the resistor R18 and one end of the resistor R26, the other end of the resistor R18 is grounded, the other end of the resistor R26 is connected with a main control circuit, a drain terminal of the field effect transistor Q4 is respectively connected with one end of the main control circuit and one end of the resistor R20 through a resistor R19, and the other end of the resistor R20 is grounded.
The utility model has the beneficial effects that:
the smoke alarm detector is provided with the LORA wireless communication circuit, can be in wireless communication connection with the server to transmit data, does not need an external communication line, can be arranged at any position, is convenient to install, can realize a fireproof alarm Internet of things network through wireless communication connection, and can remotely monitor and control the smoke alarm detector; the smoke sensor circuit can accurately detect smoke, and meanwhile, the temperature sensor circuit is arranged to detect the ambient temperature, so that secondary fire detection is performed, and the alarm accuracy is improved.
[ description of the drawings ]
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic diagram of a main control circuit according to the present invention;
FIG. 3 is a schematic diagram of a smoke sensor circuit according to the present invention;
FIG. 4 is a schematic diagram of a buzzer driving circuit according to the present invention;
FIG. 5 is a schematic diagram of the LORA wireless communication circuit of the present invention;
FIG. 6 is a schematic diagram of a battery-powered input circuit according to the present invention;
FIG. 7 is a schematic diagram of a battery level detection circuit according to the present invention;
FIG. 8 is a schematic diagram of a temperature sensor circuit according to the present invention;
FIG. 9 is a schematic diagram of an indicator light circuit of the present invention;
FIG. 10 is a schematic diagram of a key circuit according to the present invention;
FIG. 11 is a schematic diagram of an address setting circuit according to the present invention;
FIG. 12 is a diagram of a programming interface according to the present invention.
[ detailed description of the utility model ]
The following is a more detailed description of embodiments of the utility model, taken in conjunction with the accompanying drawings of which:
as shown in fig. 1 to 12, a wireless smoke alarm detector comprises a main control circuit 1 disposed in the detector, the main control circuit 1 is connected with a smoke sensor circuit 2 for detecting smoke, a buzzer driving circuit 3 for driving a buzzer to alarm when smoke is detected or the battery power is low, and an LORA wireless communication circuit 4 for wirelessly connecting with a server. Wherein the main control circuit 1 is connected with an address setting circuit 10 for setting the address of the detector. When the alarm device is used, when the smoke sensor circuit 2 detects smoke and blocks light transmission of the smoke sensor U2, a detection signal is sent to the main control circuit 1, the main control circuit 1 controls the buzzer driving circuit 3 to drive the buzzer to alarm, and sends an alarm signal to a server through the LORA wireless communication circuit 4, so that the alarm prompt function of field personnel and the remote alarm prompt function of background monitoring personnel are realized; meanwhile, the address of the smoke alarm detector is set through the address setting circuit 10, the multiple smoke alarm detectors are in wireless communication connection with the server, a fireproof alarm Internet of things network can be built, and background monitoring personnel can monitor the working state of the smoke alarm detectors in each address and can immediately know the place where a fire disaster occurs when alarming.
As shown in fig. 1, the main control circuit 1 is connected to a temperature sensor circuit 7, detects the ambient temperature through the temperature sensor circuit 7, and improves the fire detection accuracy by cooperating with the smoke sensor circuit 2.
As shown in fig. 1, main control circuit 1 is connected with battery power supply input circuit 5 for supplying power, main control circuit 1 is connected with battery power detection circuit 6 for detecting battery power, through the battery power supply, and battery power detection circuit 6 real-time supervision battery's electric quantity value, when detecting and judging battery power and hang down, main control circuit 1 controls 3 drive buzzer warning suggestion users of buzzer drive circuit and changes the battery, prevent that the battery from becoming invalid and make smog alarm detector outage unable work, the warning sound that reports to the police when wherein detecting smog and reporting to the police when low-power is different, the user of being convenient for distinguishes.
As shown in fig. 1, the main control circuit 1 is connected with an indicator light circuit 8 for light alarm prompt, and when smoke alarm is found, the indicator light circuit 8 is controlled to emit light to work, so that acousto-optic prompt is realized; the main control circuit 1 is connected with a key circuit 9 for inputting control instructions; the programming interface 11 for programming programs can program the main control circuit 1 through the programming interface 8.
As shown in fig. 5, the circuit structure of the LORA wireless communication circuit 4 includes a wireless communication chip U7, a pin 1 of the wireless communication chip U7 is grounded, a pin 2 of the wireless communication chip U7 is connected to a drain terminal of a field effect transistor Q9 and a terminal of a resistor R47, a source terminal of the field effect transistor Q9 is connected to a terminal of a resistor R30 and a main control circuit 1, the other terminal of the resistor R30 is connected to a terminal of a resistor R31, a terminal of a resistor R34, a terminal of a resistor R36, a terminal of a resistor R38, a drain terminal of the field effect transistor Q14 and a pin 13 of the wireless communication chip U7, the other terminal of the resistor R47 and a gate terminal of the field effect transistor Q9 are connected to the battery-powered input circuit 5, a pin 3 of the wireless communication chip U7 is connected to the other terminal of the resistor R38 and a collector of a transistor Q12, a base of the transistor Q12 is connected to a terminal of the resistor R25 and a terminal of the resistor R35, the other terminal of the resistor R35 is connected to the main control circuit 1, the emitter of the triode Q12 and the other end of the resistor R25 are grounded respectively, the pin 4 of the wireless communication chip U7 is connected with the other end of the resistor R36 and the collector of the triode Q10 respectively, the base of the triode Q10 is connected with one end of the resistor R41 and one end of the resistor R37 respectively, the other end of the resistor R37 is connected with the main control circuit 1, the emitter of the triode Q10 and the other end of the resistor R41 are grounded respectively, the pin 5 of the wireless communication chip U7 is connected with the other end of the resistor R34 and the collector of the triode Q8 respectively, the base of the triode Q8 is connected with one end of the resistor R33 and one end of the resistor R42 respectively, the other end of the resistor R33 is connected with the main control circuit 1, the emitter of the triode Q8 and the other end of the resistor R42 are grounded respectively, the pin 6 of the wireless communication chip U7 is connected with the collector of the triode Q7, the base of the resistor Q7 is connected with one end of the resistor R40 and one end of the resistor R39 respectively, and the other end of the resistor R40 is connected with the main control circuit 1, the emitter of the triode Q7 and the other end of the resistor R39 are grounded respectively, the pin 8 of the wireless communication chip U7 is grounded, the pin 9 of the wireless communication chip U7 is connected with one end of a capacitor C21 and one end of an inductor L5 respectively, the other end of an inductor L5 is connected with one end of a capacitor C22 and an antenna ANT1 respectively, the other end of a capacitor C21, the other end of a capacitor C22 and the pin 10 of the wireless communication chip U7 are grounded respectively, the pin 13 of the wireless communication chip U7 is connected with the positive end of an electrolytic capacitor EC2, one end of a capacitor C19, one end of a capacitor C18 and one end of an inductor L3 respectively, the other end of an inductor L3 is connected with a battery power supply VBAT, one end of an inductor L4 is grounded, the other end of the inductor L4 is connected with the other end of a capacitor C18, the other end of a capacitor C19 and the negative end of an electrolytic capacitor EC2 respectively and connected with the ground respectively, the source terminal of the pin 14 of the wireless communication chip U7 is connected with one end of a resistor R32 and a field effect transistor Q11 respectively, and the other end of a field effect transistor Q11 is connected with the other end of a resistor R31 respectively, The main control circuit 1 is connected, and the grid end of the field effect transistor Q11 and the other end of the resistor R32 are respectively connected with the battery power supply input circuit 5.
As shown in fig. 3, the circuit structure of the smoke sensor circuit 2 includes a smoke sensor U2, a pin 4 of the smoke sensor U2 is connected to the positive terminal of an electrolytic capacitor EC1 and one end of a resistor R12, the negative terminal of the electrolytic capacitor EC1 is grounded, the other end of the resistor R12 is connected to the output terminal of the battery-powered input circuit 5, a pin 3 of the smoke sensor U2 is connected to the collector of a transistor Q1 and the collector of a transistor Q2, the emitter of the transistor Q1 is grounded via a resistor R13, the base of the transistor Q1 is connected to the emitter of the transistor Q2, the base of the transistor Q2 is connected to one end of a resistor R14 and one end of a resistor R11, the other end of a resistor R14 is grounded, the other end of the resistor R11 is used as a test point T4, a pin 1 of the smoke sensor U2 is connected to one end of an amplifier U1.1 pin 3, one end of a resistor R1 and one end of a capacitor C1, the other end of the capacitor C1 is connected to the other end of a resistor R1, an amplifier U1.1.1 pin 1, One end of a capacitor C4 is connected, a pin 8 of an operational amplifier U1.1 is grounded, a pin 4 of the operational amplifier U1.1 is connected with a main control circuit 1, a pin 2 of a smoke sensor U2 is connected with one end of a resistor R5 and a pin 2 of an operational amplifier U1.1, the other end of the resistor R5 is connected with one end of a resistor R8 and one end of a resistor R10, the other end of a resistor R8 is connected with the main control circuit 1, the other end of the resistor R10 is grounded, the other end of the capacitor C4 is connected with one end of a capacitor C2, one end of a resistor R2 and one end of a resistor R6, the other end of a capacitor C2 is grounded, the other end of a resistor R6 is grounded, the other end of a resistor R2 is connected with one end of a resistor R7 and one end of an operational amplifier U1.2 pin 6, the other end of a resistor R9 and one end of a capacitor C5, a pin 7 of an operational amplifier U1.2 is connected with the other end of a resistor R9, the other end of a capacitor C8269553 and one end of a resistor R868427, respectively, One end of the resistor R4 is connected, the other end of the capacitor C3 is grounded, and the other end of the resistor R4 is connected with the main control circuit 1.
As shown in fig. 4, the circuit structure of the buzzer driving circuit 3 includes a connection terminal SPK1 and a driving chip U5 connected to the buzzer, a pin 1 of a driving chip U5 and a pin 12 of a driving chip U5 are respectively connected to one end of a capacitor C13 and a battery power supply VBAT, the other end of the capacitor C13 and a pin 6 of a driving chip U5 are respectively grounded, a pin 2 of the driving chip U5 is connected to the main control circuit 1, a pin 3 of the driving chip U5 is respectively connected to one end of a resistor R21 and a pin 1 of a connection terminal SPK1, the other end of a resistor R21 is respectively connected to a pin 5 of the driving chip U5, one end of a capacitor C9 and one end of a resistor R22, the other end of a resistor R22 is connected to a pin 3 of the connection terminal SPK1, a pin 4 of the driving chip U5 is respectively connected to the other end of a capacitor C9 and a pin SPK1, and a pin 5 7 of the driving chip U5 is grounded via a capacitor C10.
As shown in fig. 6, the circuit structure of the battery-powered input circuit 5 includes a boost chip U4, an input terminal of the boost chip U4 is connected to one end of a capacitor C7, one end of a capacitor C17, a battery power VBAT, a negative terminal of a diode D1, and one end of a fuse F1, another end of a capacitor C7, another end of a capacitor C17, and a positive terminal of a diode D1 are grounded, another end of a fuse F1 is connected to an anti-reverse connector batt pin 2, an anti-reverse connector batt pin 1 is grounded, a ground terminal of the boost chip U4 is grounded, an output terminal of the boost chip U4 is connected to one end of a capacitor C8, one end of a capacitor C15, and one end of an inductor L1, another end of an inductor L1 is used as an output power VCC of the battery-powered input circuit 5 and is connected to one end of a capacitor C16, another end of a capacitor C8, another end of a capacitor C15, another end of a capacitor C16 is grounded, and an inductor L2 is connected between another end of a capacitor C15 and another end of a capacitor C16.
As shown in fig. 7, the battery power detection circuit 6 includes a field effect transistor Q4, a source terminal of the field effect transistor Q4 is respectively connected to one end of a resistor R23 and a battery power VBAT, a gate terminal of the field effect transistor Q4 is respectively connected to the other end of a resistor R23 and one end of a resistor R24, the other end of the resistor R24 is connected to a collector of a transistor Q3, an emitter of the transistor Q3 is grounded, a base of the transistor Q3 is respectively connected to one end of the resistor R18 and one end of the resistor R26, the other end of the resistor R18 is grounded, the other end of the resistor R26 is connected to the main control circuit 1, the field effect transistor Q4 is respectively connected to one end of the main control circuit 1 and one end of the resistor R20 through a resistor R19, and the other end of the resistor R20 is grounded.
Claims (9)
1. A wireless smoke alarm detector, its characterized in that: including setting up main control circuit (1) in the detector, main control circuit (1) is connected with smoke transducer circuit (2) that are used for detecting smog, be used for when detecting smog or battery power low time drive bee calling organ drive circuit (3) that the bee calling organ reported to the police, be used for LORA wireless communication circuit (4) with server wireless connection, main control circuit (1) is connected with battery power supply input circuit (5) that are used for the power supply, main control circuit (1) is connected with battery power detection circuitry (6) that are used for detecting battery power.
2. A wireless smoke alarm detector according to claim 1, wherein: the main control circuit (1) is connected with a temperature sensor circuit (7).
3. A wireless smoke alarm detector according to claim 1, wherein: the main control circuit (1) is connected with an indicator light circuit (8) for light alarm prompt, and the main control circuit (1) is connected with a key circuit (9) for inputting control instructions.
4. A wireless smoke alarm detector according to claim 1, wherein: the main control circuit (1) is connected with an address setting circuit (10) for setting the address of the detector and a programming interface (11) for burning programs.
5. A wireless smoke alarm detector according to claim 1, wherein: the LORA wireless communication circuit (4) comprises a wireless communication chip U7, a wireless communication chip U7 pin 1 is grounded, a wireless communication chip U7 pin 2 is respectively connected with a drain end of a field effect transistor Q9 and one end of a resistor R47, a source end of the field effect transistor Q9 is respectively connected with one end of a resistor R30 and a main control circuit (1), the other end of the resistor R30 is respectively connected with one end of a resistor R31, one end of a resistor R34, one end of a resistor R36, one end of a resistor R38, a drain end of the field effect transistor Q14 and a pin 13 of the wireless communication chip U7, the other end of the resistor R47 and a gate end of the field effect transistor Q9 are respectively connected with a battery power supply input circuit (5), a wireless communication chip U7 pin 3 is respectively connected with the other end of the resistor R38 and a collector of a triode Q12, a base of a triode Q12 is respectively connected with one end of a resistor R25 and one end of a resistor R35, the other end of the resistor R35 is connected with the main control circuit (1), and an emitter of the triode Q12, The other end of the resistor R25 is grounded, the pin 4 of the wireless communication chip U7 is connected with the other end of the resistor R36 and the collector of the triode Q10, the base of the triode Q10 is connected with one end of the resistor R41 and one end of the resistor R37, the other end of the resistor R37 is connected with the main control circuit (1), the emitter of the triode Q10 and the other end of the resistor R41 are grounded, the pin 5 of the wireless communication chip U7 is connected with the other end of the resistor R34 and the collector of the triode Q8, the base of the triode Q8 is connected with one end of the resistor R33 and one end of the resistor R42, the other end of the resistor R33 is connected with the main control circuit (1), the emitter of the triode Q8 and the other end of the resistor R42 are grounded, the pin 6 of the wireless communication chip U7 is connected with the collector of the triode Q7, the base of the triode Q7 is connected with one end of the resistor R40 and one end of the resistor R39, the other end of the resistor R40 is connected with the main control circuit (1), and the emitter of the transistor Q7 is connected with the main control circuit (1), and the emitter of the transistor Q7, The other end of the resistor R39 is respectively grounded, the pin 8 of the wireless communication chip U7 is grounded, the pin 9 of the wireless communication chip U7 is respectively connected with one end of a capacitor C21 and one end of an inductor L5, the other end of the inductor L5 is respectively connected with one end of a capacitor C22 and an antenna ANT1, the other end of a capacitor C21, the other end of a capacitor C22 and the pin 10 of the wireless communication chip U7 are respectively grounded, the pin 13 of the wireless communication chip U7 is connected with the anode end of an electrolytic capacitor EC2, one end of a capacitor C19, one end of a capacitor C18 and one end of an inductor L3, the other end of the inductor L3 is connected with a battery power supply VBAT, one end of the inductor L4 is grounded, the other end of the inductor L4 is respectively connected with the other end of a capacitor C4, the cathode end of the electrolytic capacitor C4 and is connected with the ground, the pin 14 of the wireless communication chip U4 is respectively connected with one end of the resistor R4 and the drain terminal of the field effect tube Q4, the source terminal of the field effect tube Q4 is respectively connected with the circuit (1), the grid end of the field effect transistor Q11 and the other end of the resistor R32 are respectively connected with the battery power supply input circuit (5).
6. A wireless smoke alarm detector according to claim 1, wherein: the smoke sensor circuit (2) comprises a smoke sensor U2, a pin 4 of the smoke sensor U2 is respectively connected with the positive terminal of an electrolytic capacitor EC1 and one end of a resistor R12, the negative terminal of the electrolytic capacitor EC1 is grounded, the other end of the resistor R12 is connected with the output end of a battery power supply input circuit (5), a pin 3 of the smoke sensor U2 is respectively connected with the collector of a triode Q1 and the collector of a triode Q2, the emitter of the triode Q1 is grounded through a resistor R13, the base of the triode Q1 is connected with the emitter of the triode Q2, the base of the triode Q2 is respectively connected with one end of a resistor R14 and one end of a resistor R11, the other end of a resistor R14 is grounded, the other end of the resistor R11 is used as a test point T4, a pin 2 of the smoke sensor U2 is respectively connected with one end of a pin 3 of an operational amplifier U1.1, one end of a resistor R1 and one end of a capacitor C1, the other end of a capacitor C1 is respectively connected with the other end of a resistor R1, the amplifier U1.1.1.1 and one end of a capacitor C4, a pin 8 of a U1.1 of the operational amplifier is grounded, a pin 4 of the U1.1 of the operational amplifier is connected with a main control circuit (1), a pin 2 of a smoke sensor U2 is respectively connected with one end of a resistor R5 and a pin 2 of the U1.1 of the operational amplifier, the other end of the resistor R5 is respectively connected with one end of a resistor R8 and one end of a resistor R10, the other end of a resistor R8 is connected with the main control circuit (1), the other end of the resistor R10 is grounded, the other end of a capacitor C4 is respectively connected with one end of a capacitor C2, one end of a resistor R2 and one end of a resistor R6, the other end of a capacitor C2 is grounded, the other end of a resistor R6 is grounded, the other end of a resistor R2 is respectively connected with one end of a resistor R7 and one end of a pin 6 of the operational amplifier U1.2, the other end of a resistor R7 is grounded, a pin 5 is respectively connected with one end of a resistor R9 and one end of a capacitor C5, a pin 7 of the operational amplifier U1.2 is respectively connected with the other end of a resistor R9, the other end of the resistor 3 is respectively connected with one end of the capacitor C3, One end of the resistor R4 is connected, the other end of the capacitor C3 is grounded, and the other end of the resistor R4 is connected with the main control circuit (1).
7. A wireless smoke alarm detector according to claim 1, wherein: the buzzer driving circuit (3) comprises a connecting terminal SPK1 and a driving chip U5 which are connected with a buzzer, a pin 1 of the driving chip U5 and a pin 12 of the driving chip U5 are respectively connected with one end of a capacitor C13 and a battery power supply VBAT, the other end of the capacitor C13 and a pin 6 of a driving chip U5 are respectively grounded, a pin 2 of the driving chip U5 is connected with a main control circuit (1), a pin 3 of the driving chip U5 is respectively connected with one end of a resistor R21 and the pin 1 of the connecting terminal SPK1, the other end of the resistor R21 is respectively connected with a pin 5 of the driving chip U5, one end of a capacitor C9 and one end of a resistor R22, the other end of the resistor R22 is connected with a pin 3 of the connecting terminal SPK1, a pin 4 of the driving chip U5 is respectively connected with the other end of the capacitor C9 and the pin 2 of the connecting terminal SPK1, and a pin 7 of the driving chip U5 is grounded through a capacitor C10.
8. A wireless smoke alarm detector according to claim 1, wherein: the battery power supply input circuit (5) comprises a boosting chip U4, wherein the input end of the boosting chip U4 is respectively connected with one end of a capacitor C7, one end of a capacitor C17, a battery power supply VBAT, the cathode end of a diode D1 and one end of a fuse F1, the other end of the capacitor C7, the other end of the capacitor C17 and the anode end of the diode D1 are respectively grounded, the other end of the fuse F1 is connected with an anti-reverse connector BATIN pin 2, an anti-reverse connector BATIN pin 1 is grounded, the ground end of the boosting chip U4 is grounded, the output end of the boosting chip U4 is respectively connected with one end of the capacitor C8, one end of a capacitor C15 and one end of an inductor L1, the other end of the inductor L1 is used as an output power supply VCC of the battery power supply input circuit (5) and is connected with one end of a capacitor C16, the other end of the capacitor C8, the other end of the capacitor C15 and the other end of the capacitor C16 are respectively grounded, and the inductor L2 is connected between the other end of the capacitor C15 and the other end of the capacitor C16.
9. A wireless smoke alarm detector according to claim 1, wherein: the battery power detection circuit (6) comprises a field effect transistor Q4, a source terminal of the field effect transistor Q4 is respectively connected with one end of a resistor R23 and a battery power supply VBAT, a grid terminal of the field effect transistor Q4 is respectively connected with the other end of a resistor R23 and one end of a resistor R24, the other end of the resistor R24 is connected with a collector electrode of a triode Q3, an emitter electrode of the triode Q3 is grounded, a base electrode of a triode Q3 is respectively connected with one end of the resistor R18 and one end of the resistor R26, the other end of the resistor R18 is grounded, the other end of the resistor R26 is connected with the main control circuit (1), the field effect transistor Q4 is respectively connected with one end of the main control circuit (1) and one end of the resistor R20 through a resistor R19, and the other end of the resistor R20 is grounded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121139785.2U CN215814424U (en) | 2021-05-26 | 2021-05-26 | Wireless smoke alarm detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121139785.2U CN215814424U (en) | 2021-05-26 | 2021-05-26 | Wireless smoke alarm detector |
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| CN215814424U true CN215814424U (en) | 2022-02-11 |
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| CN202121139785.2U Active CN215814424U (en) | 2021-05-26 | 2021-05-26 | Wireless smoke alarm detector |
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| CN (1) | CN215814424U (en) |
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