CN113823058A - Smoke alarm device with wide application range - Google Patents

Smoke alarm device with wide application range Download PDF

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Publication number
CN113823058A
CN113823058A CN202111163601.0A CN202111163601A CN113823058A CN 113823058 A CN113823058 A CN 113823058A CN 202111163601 A CN202111163601 A CN 202111163601A CN 113823058 A CN113823058 A CN 113823058A
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pin
integrated chip
circuit
resistor
module
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廖玲艳
甄振龙
廖岳军
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Shenzhen Longsin Intelligent Technology Co ltd
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Shenzhen Longsin Intelligent Technology Co ltd
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Priority to CN202111163601.0A priority Critical patent/CN113823058A/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/10Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/12Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/16Combustible gas alarms
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18Status alarms
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)

Abstract

The invention discloses a smoke alarm device with wide application range, which comprises a control chip U1, a system power supply, a wireless module circuit, an output module, an input module, a display alarm module and a detection sensing module, wherein the control chip U1 is connected with the output module through a wireless module circuit; the system power supply, the wireless module circuit, the input module and the output module are all connected with a control chip U1, the output of the output module is connected with a display alarm module, the detection sensing module is connected with the input module, the detection sensing module comprises a case circuit, a crystal oscillator circuit, a reset circuit, a sensor circuit, a temperature measuring circuit and a programming interface circuit, and the display alarm module comprises a display circuit, an alarm circuit and an indicator light circuit; the invention has few used components, can meet the requirement of detecting the conditions of annular smoke and combustible gas in an unmanned state, and has good market application value.

Description

Smoke alarm device with wide application range
Technical Field
The invention relates to the technical field of smoke alarm, in particular to a smoke alarm device with wide application range.
Background
Real-time and accurate measurement of smoke concentration is an important means of preventing a fire. In traditional smoke detection, a preset value of smoke concentration is generally carried out in a smoke alarm, and when the smoke concentration in a detection environment is higher than a set threshold value, the alarm can work to give out warning sound, so that a person can be indicated to check. Combustible gas has certain diffusion characteristic and very high diffusion speed, and combustible gas can rapidly diffuse under the driving of external force to form an explosion accident, so that the combustible gas in the environment needs to be detected by using a combustible gas detector. The detection of smoke and combustible gas is particularly important in industrial environment and daily life environment, but most of the existing smoke detection and combustible gas detection use two different instruments, and the smoke detection and combustible gas detection are low in integration level and inconvenient to use.
Disclosure of Invention
In view of this, the invention provides a smoke alarm device with a wide application range, which comprises a control chip U1, a system power supply, a wireless module circuit, an output module, an input module, a display alarm module and a detection sensing module; the system power supply, the wireless module circuit, the input module and the output module are all connected with a control chip U1, the output of the output module is connected with a display alarm module, the detection sensing module is connected with the input module, the detection sensing module comprises a case circuit, a crystal oscillator circuit, a reset circuit, a sensor circuit, a temperature measuring circuit and a programming interface circuit, and the display alarm module comprises a display circuit, an alarm circuit and an indicator light circuit; the detection sensing module detects the conditions of smoke and combustible gas around the sensor, and the wireless module circuit uploads sensor parameters to the server or the computer, so that the conditions of environmental smoke and combustible gas are detected without people.
Preferably, the system power supply includes an integrated chip U6, pin 2 of the integrated chip U6 is connected to a first end of an inductor L1, a second end of the inductor L1 is connected to VCC, pin 6 of the integrated chip U6 is connected to a first end of a capacitor C4, a second end of the capacitor C4 is connected to pin 1, pin 4 of the integrated chip U6 and a second end of the capacitor C3, a first end of the capacitor C3 is connected to pin 3, pin 5 of the integrated chip U6, a second end of the capacitor C2 and a port 1 of a USB1, a port 4 of the USB1 is connected to a second end of a resistor R3, a first end of the resistor R3 is connected to a port 5 of the USB1, a second end of the inductor 1 is connected to a first end of a resistor R9, a second end of the resistor R9 is connected to a positive electrode of the LED1, a negative electrode of the LED1 is grounded, and a TPS model number of the integrated chip U6 is 62237, a DRYT.
Preferably, the model of the control chip U1 is MSP430F5529IPN, the KEY circuit is composed of two KEYs, the KEY circuit includes a case KEY1 and a KEY2, first ends of the KEY1 and the KEY2 are respectively connected to the pin 22 and the pin 30 of the control chip U1, and second ends of the KEY1 and the KEY2 are both grounded.
Preferably, the crystal oscillator circuit comprises a crystal oscillator tube X3, pin 3 and pin 1 of the crystal oscillator tube X3 are respectively connected with pin 70 and pin 69 of the integrated chip U1, and pin 2 of the crystal oscillator tube X3 is grounded.
Preferably, the reset circuit comprises a KEY3, a resistor R2 and a capacitor C1; VCC is connected to the first end of resistance R2, the first end of electric capacity C1 and the first end of button KEY3 are connected to the second end of resistance R2, the second end of button KEY3 and the second end of electric capacity C1 all ground connection, pin 76 of integrated chip U1 is connected to the first end of button KEY 3.
Preferably, the sensor circuit comprises an integrated chip U4 and an integrated chip U7; pins 2, 3, 4 and 5 of the integrated chip U4 are correspondingly connected with a port 2 and a port 1 of a smoke sensor NIS-09C and a port 2 and a port 1 of a combustible gas sensor TP-2, pins 17, 16, 15 and 14 of the integrated chip U4 are connected with pins 5, 6, 7 and 8 of an integrated chip U1, and the integrated chip U4 is ADS 1213E; pin 9 and pin 10 of integrated chip U7 connect the second end of resistance R8 and resistance R7 respectively, VCC is connected to the first end of resistance R7-R8, pin 1 of integrated chip U7 connects pins 4 and 6 of smoke sensor MQ-2, VCC is connected to pins 1, 3, 5 of smoke sensor MQ-2, pin 2 of smoke sensor MQ-2 and pin 5-8 of integrated chip U7 all ground connection, the model of integrated chip U7 is PCF 8591T.
Preferably, the temperature measuring circuit comprises an integrated chip U9, a pin 3 of the integrated chip U9 is connected with a first end of a resistor R6, a second end of the resistor R6 is connected with a pin 2 of the integrated chip U9, a pin 1 of the integrated chip U9 is grounded, and the integrated chip U9 is DS18B 20.
Preferably, the display circuit comprises a connector U2, pin 1 of the connector U2 is connected to a first end of a capacitor C5, a second end of the capacitor C5 is connected to pin 3 of the connector U2, pin 6 of the integrated chip U2 is connected to first ends of capacitors C10 and C11, second ends of the capacitors C10 and C11 are grounded, pins 13, 14, 15, 18 of the integrated chip U2 are connected to pins 80, 1, 2, 4 of the integrated chip U11, pin 26 of the integrated chip U2 is connected to a first end of a resistor R10, pin 20 of the integrated chip U2 is connected to a first end of a resistor R11, a second end of the resistor R11 is connected to a first end of a resistor R12, a second end of the resistor R12 is connected to first ends of capacitors C7 and C36874, pin 27 of the integrated chip U2 is connected to a first end of a capacitor C2, a second end of the integrated chip U12 is connected to a first end of a capacitor C2 and a first end of a capacitor C2, the second ends of the capacitors C7-C9 are all grounded.
Preferably, the alarm circuit comprises a triode Q1, a base of the triode Q1 is connected with a second end of the resistor R1, an emitter and a collector of the triode Q1 are respectively connected with VCC and a first end of an alarm BL1, and a second end of the alarm BL1 is grounded; the indicator light circuit comprises a diode LED4 and a diode LED 5; the anode of the diode LED4 is connected with the first end of the resistor R4, the second end of the resistor R4 is connected with the second end of the resistor R5, and the first end of the resistor R5 is connected with the anode of the diode LED 5; pins 71, 72, 73, 74, 75, 76 of the integrated chip U1 connect ports 7, 2, 4, 6, 8, and 12 of the programming interface P1.
Preferably, the wireless module circuit comprises an integrated chip U3, pin 2 of the integrated chip U3 is connected to the second end of an inductor L2, the first end of the inductor L2 is connected to an antenna ANT1, pin 31 of the integrated chip U3 is connected to the second end of a resistor R14, the first end of the resistor R14 is respectively connected to the first end of a capacitor C12 and pin 1 of a crystal oscillator X1, pin 2 of the crystal oscillator X1 is connected to the second end of a capacitor C12 and pin 28 of a several times constant chip U3, pins 3 and 4 of the crystal oscillator X1 are connected in parallel with the capacitor C13, pin 32 of the integrated chip U3 is connected to the first end of a capacitor C14, the second end of the capacitor C14 and pin 33 of an integrated chip U3 are both grounded, and the integrated chip U3 is 8266 EX.
Has the advantages that:
the circuit has higher integration level and fewer used components, can detect the smoke and combustible gas conditions around the sensor through one MQ-2 smoke sensor, one NIS-09C smoke sensor and one TP-2 type combustible gas sensor, can further detect the environmental temperature through the DS18B20 temperature sensor, can meet the detection of environmental smoke and combustible gas in an unmanned state, and has good market application value.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a diagram of the wiring harness configuration of the power circuit of the system of the present invention;
FIG. 3 is a diagram of the construction of the main control chip and the wiring harness of the key circuit according to the present invention;
FIG. 4 is a diagram of a wire harness configuration of the crystal oscillator circuit of the present invention;
FIG. 5 is a wiring harness diagram of the reset circuit of the present invention;
FIG. 6 is a diagram of the sensor circuit harness construction of the present invention;
FIG. 7 is a schematic diagram of a temperature measuring circuit harness according to the present invention;
FIG. 8 illustrates a circuit harness construction diagram according to the present invention;
FIG. 9 is a wiring harness configuration diagram of the alarm circuit and indicator light circuit of the present invention;
fig. 10 is a wiring harness configuration diagram of the wireless module circuit of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. The preferred embodiments of the present invention are shown in the drawings, but the present invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The working method comprises the following steps:
the circuit can detect the conditions of smoke and combustible gas around the sensor through one MQ-2 smoke sensor, one NIS-09C smoke sensor and one TP-2 type combustible gas sensor, the DS18B20 temperature sensor can further detect the ambient temperature, the key circuit can set the frequency of the alarm circuit, the wireless module circuit can upload the sensor parameters to a server or an upper computer to inform people of the states of all the ambient environment parameters of the sensor, and the purpose that the conditions of the ambient smoke and the combustible gas can be detected without people is achieved.
The first embodiment is as follows:
as shown in fig. 1, a smoke alarm device with a wide application range includes a control chip U1, a system power supply, a wireless module circuit, an output module, an input module, a display alarm module, and a detection sensing module; the system power supply, the wireless module circuit, the input module and the output module are all connected with a control chip U1, the output of the output module is connected with a display alarm module, the detection sensing module is connected with the input module, the detection sensing module comprises a case circuit, a crystal oscillator circuit, a reset circuit, a sensor circuit, a temperature measuring circuit and a programming interface circuit, and the display alarm module comprises a display circuit, an alarm circuit and an indicator light circuit; the detection sensing module detects the conditions of smoke and combustible gas around the sensor, and the wireless module circuit uploads sensor parameters to the server or the computer, so that the conditions of environmental smoke and combustible gas are detected without people.
As shown in fig. 2, the system power supply includes an integrated chip U6, pin 2 of the integrated chip U6 is connected to a first end of an inductor L1, a second end of the inductor L1 is connected to VCC, pin 6 of the integrated chip U6 is connected to a first end of a capacitor C4, a second end of the capacitor C4 is connected to pin 1, pin 4 of the integrated chip U6 and a second end of a capacitor C3, a first end of the capacitor C3 is connected to pin 3, pin 5 of the integrated chip U6, a second end of the capacitor C2 and port 1 of the USB1, port 4 of the USB1 is connected to a second end of a resistor R3, a first end of the resistor R3 is connected to port 5 of the USB1, a second end of the inductor L1 is connected to a first end of a resistor R9, a second end of the resistor R9 is connected to a positive electrode of the LED1, a negative electrode of the LED1 is grounded, and a TPS of the integrated chip U6 is 62237 DRYT.
As shown in fig. 3, the model of the control chip U1 is MSP430F5529IPN, the KEY circuit includes two KEYs, the KEY circuit includes a case KEY1 and a KEY2, first ends of the KEY1 and the KEY2 are respectively connected to the pin 22 and the pin 30 of the control chip U1, and second ends of the KEY1 and the KEY2 are both grounded.
As shown in fig. 4, the crystal oscillator circuit includes a crystal oscillator tube X3, pin 3 and pin 1 of the crystal oscillator tube X3 are respectively connected to pin 70 and pin 69 of the integrated chip U1, and pin 2 of the crystal oscillator tube X3 is grounded.
As shown in fig. 5, the reset circuit includes a KEY3, a resistor R2 and a capacitor C1; VCC is connected to the first end of resistance R2, the first end of electric capacity C1 and the first end of button KEY3 are connected to the second end of resistance R2, the second end of button KEY3 and the second end of electric capacity C1 all ground connection, pin 76 of integrated chip U1 is connected to the first end of button KEY 3.
As shown in fig. 6, the sensor circuit includes an integrated chip U4 and an integrated chip U7; pins 2, 3, 4 and 5 of the integrated chip U4 are correspondingly connected with a port 2 and a port 1 of a smoke sensor NIS-09C and a port 2 and a port 1 of a combustible gas sensor TP-2, pins 17, 16, 15 and 14 of the integrated chip U4 are connected with pins 5, 6, 7 and 8 of an integrated chip U1, and the integrated chip U4 is ADS 1213E; pin 9 and pin 10 of integrated chip U7 connect the second end of resistance R8 and resistance R7 respectively, VCC is connected to the first end of resistance R7-R8, pin 1 of integrated chip U7 connects pins 4 and 6 of smoke sensor MQ-2, VCC is connected to pins 1, 3, 5 of smoke sensor MQ-2, pin 2 of smoke sensor MQ-2 and pin 5-8 of integrated chip U7 all ground connection, the model of integrated chip U7 is PCF 8591T.
As shown in fig. 7, the thermometric circuit includes an integrated chip U9, pin 3 of the integrated chip U9 is connected to a first end of a resistor R6, a second end of the resistor R6 is connected to pin 2 of the integrated chip U9, pin 1 of the integrated chip U9 is grounded, and the integrated chip U9 is DS18B 20.
As shown in fig. 8, the display circuit includes a connector U2, pin 1 of the connector U2 is connected to a first end of a capacitor C5, a second end of the capacitor C5 is connected to pin 3 of the connector U2, pin 6 of the integrated chip U2 is connected to first ends of capacitors C10 and C11, second ends of the capacitors C10 and C11 are grounded, pins 13, 14, 15, 18 of the integrated chip U2 are connected to pins 80, 1, 2, 4 of the integrated chip U11, pin 26 of the integrated chip U2 is connected to a first end of a resistor R10, pin 20 of the integrated chip U2 is connected to a first end of a resistor R11, a second end of the resistor R11 is connected to a first end of a resistor R12, a second end of the resistor R12 is connected to first ends of capacitors C10 and C11, pin 27 of the integrated chip U2 is connected to a first end of a capacitor C2, a second end of the integrated chip U8428 is connected to a first end of a capacitor C2 and a first end of a capacitor C2, the second ends of the capacitors C7-C9 are all grounded.
As shown in fig. 9, the alarm circuit includes a transistor Q1, a base of the transistor Q1 is connected to a second end of the resistor R1, an emitter and a collector of the transistor Q1 are respectively connected to VCC and a first end of an alarm BL1, and a second end of the alarm BL1 is grounded; the indicator light circuit comprises a diode LED4 and a diode LED 5; the anode of the diode LED4 is connected with the first end of the resistor R4, the second end of the resistor R4 is connected with the second end of the resistor R5, and the first end of the resistor R5 is connected with the anode of the diode LED 5; pins 71, 72, 73, 74, 75, 76 of the integrated chip U1 connect ports 7, 2, 4, 6, 8, and 12 of the programming interface P1.
As shown in fig. 10, the wireless module circuit includes an integrated chip U3, pin 2 of the integrated chip U3 is connected to the second end of an inductor L2, the first end of the inductor L2 is connected to an antenna ANT1, pin 31 of the integrated chip U3 is connected to the second end of a resistor R14, the first end of the resistor R14 is connected to the first end of a capacitor C12 and pin 1 of a crystal oscillator X1, pin 2 of the crystal oscillator X1 is connected to the second end of a capacitor C12 and pin 28 of a several times constant chip U3, pins 3 and 4 of the crystal oscillator X1 are connected in parallel to a capacitor C13, pin 32 of the integrated chip U3 is connected to the first end of a capacitor C14, the second end of the capacitor C14 ESP is grounded to pin 33 of the integrated chip U3, and the integrated chip U3 is 82 8266 EX.
Those not described in detail in this specification are within the skill of the art.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A smoke alarm device with wide application range is characterized by comprising a control chip U1, a system power supply, a wireless module circuit, an output module, an input module, a display alarm module and a detection sensing module; the system power supply, the wireless module circuit, the input module and the output module are all connected with a control chip U1, the output of the output module is connected with a display alarm module, the detection sensing module is connected with the input module, the detection sensing module comprises a case circuit, a crystal oscillator circuit, a reset circuit, a sensor circuit, a temperature measuring circuit and a programming interface circuit, and the display alarm module comprises a display circuit, an alarm circuit and an indicator light circuit; the detection sensing module detects the conditions of smoke and combustible gas around the sensor, and the wireless module circuit uploads sensor parameters to the server or the computer, so that the conditions of environmental smoke and combustible gas are detected without people.
2. A wide range of smoke alarm unit according to claim 1, the system power supply comprises an integrated chip U6, wherein pin 2 of the integrated chip U6 is connected with a first end of an inductor L1, the second end of the inductor L1 is connected with VCC, the pin 6 of the integrated chip U6 is connected with the first end of the capacitor C4, the second end of the capacitor C4 is respectively connected with the pin 1 and the pin 4 of the integrated chip U6 and the second end of the capacitor C3, the first end of the capacitor C3 is respectively connected with the pin 3 and the pin 5 of the integrated chip U6, the second end of the capacitor C2 and the port 1 of the USB1, the port 4 of the USB1 is connected with the second end of the resistor R3, the first end of the resistor R3 is connected with the port 5 of the USB1, the second end of the inductor L1 is connected with the first end of the resistor R9, the second end of the resistor R9 is connected with the anode of the LED1, the negative electrode of the LED1 is grounded, and the model of the integrated chip U6 is TPS62237 DRYT.
3. The smoke alarm device with wide application range of claim 1, wherein the control chip U1 is model MSP430F5529IPN, the KEY circuit is composed of two KEYs, the KEY circuit includes case KEY1 and KEY2, first ends of the KEY1 and the KEY2 are respectively connected to the pin 22 and the pin 30 of the control chip U1, and second ends of the KEY1 and the KEY2 are both grounded.
4. The smoke alarm device with wide application range as claimed in claim 1, wherein the crystal oscillator circuit comprises a crystal oscillator tube X3, pin 3 and pin 1 of the crystal oscillator tube X3 are respectively connected with pin 70 and pin 69 of an integrated chip U1, and pin 2 of the crystal oscillator tube X3 is grounded.
5. The wide range smoke alarm device of claim 1, wherein said reset circuit comprises KEY3, resistor R2 and capacitor C1; VCC is connected to the first end of resistance R2, the first end of electric capacity C1 and the first end of button KEY3 are connected to the second end of resistance R2, the second end of button KEY3 and the second end of electric capacity C1 all ground connection, pin 76 of integrated chip U1 is connected to the first end of button KEY 3.
6. The wide range smoke alarm device of claim 1, wherein said sensor circuit comprises integrated chip U4 and integrated chip U7; pins 2, 3, 4 and 5 of the integrated chip U4 are correspondingly connected with a port 2 and a port 1 of a smoke sensor NIS-09C and a port 2 and a port 1 of a combustible gas sensor TP-2, pins 17, 16, 15 and 14 of the integrated chip U4 are connected with pins 5, 6, 7 and 8 of an integrated chip U1, and the integrated chip U4 is ADS 1213E; pin 9 and pin 10 of integrated chip U7 connect the second end of resistance R8 and resistance R7 respectively, VCC is connected to the first end of resistance R7-R8, pin 1 of integrated chip U7 connects pins 4 and 6 of smoke sensor MQ-2, VCC is connected to pins 1, 3, 5 of smoke sensor MQ-2, pin 2 of smoke sensor MQ-2 and pin 5-8 of integrated chip U7 all ground connection, the model of integrated chip U7 is PCF 8591T.
7. The wide-range smoke alarm device of claim 1, wherein the temperature measuring circuit comprises an integrated chip U9, pin 3 of the integrated chip U9 is connected to a first end of a resistor R6, a second end of the resistor R6 is connected to pin 2 of the integrated chip U9, pin 1 of the integrated chip U9 is grounded, and the integrated chip U9 is model DS18B 20.
8. The wide range smoke alarm device of claim 1, wherein said display circuit comprises a connector U2, pin 1 of said connector U2 is connected to a first terminal of a capacitor C5, a second terminal of said capacitor C5 is connected to pin 3 of a connector U2, pin 6 of said integrated chip U2 is connected to first terminals of capacitors C10 and C11, second terminals of said capacitors C10 and C11 are grounded, pins 13, 14, 15, 18 of said integrated chip U2 are connected to pins 80, 1, 2, 4 of an integrated chip U11, pin 26 of said integrated chip U2 is connected to a first terminal of a resistor R10, pin 20 of said integrated chip U2 is connected to a first terminal of a resistor R11, a second terminal of said resistor R11 is connected to a first terminal of a resistor R12, a second terminal of said resistor R12 is connected to first terminals of capacitors C10 and C11, and a first terminal of a capacitor C7 of said integrated chip U2 is connected to a first terminal of a capacitor C7, the pin 28 of the integrated chip U2 is connected to the first ends of the capacitors C8 and C9, and the second ends of the capacitors C7-C9 are all grounded.
9. The smoke alarm device with wide application range according to claim 1, wherein the alarm circuit comprises a transistor Q1, a base of the transistor Q1 is connected to the second end of a resistor R1, an emitter and a collector of the transistor Q1 are respectively connected to VCC and the first end of an alarm BL1, and the second end of the alarm BL1 is grounded; the indicator light circuit comprises a diode LED4 and a diode LED 5; the anode of the diode LED4 is connected with the first end of the resistor R4, the second end of the resistor R4 is connected with the second end of the resistor R5, and the first end of the resistor R5 is connected with the anode of the diode LED 5; pins 71, 72, 73, 74, 75, 76 of the integrated chip U1 connect ports 7, 2, 4, 6, 8, and 12 of the programming interface P1.
10. The smoke alarm device with wide application range as claimed in claim 1, wherein the wireless module circuit comprises an integrated chip U3, pin 2 of the integrated chip U3 is connected to the second end of an inductor L2, the first end of the inductor L2 is connected to an antenna ANT1, pin 31 of the integrated chip U3 is connected to the second end of a resistor R14, the first end of the resistor R14 is respectively connected to the first end of a capacitor C12 and pin 1 of a crystal resonator X1, pin 2 of the crystal resonator X1 is connected to the second end of a capacitor C12 and pin 28 of a constant chip U3 several times, pins 3 and 4 of the crystal resonator X1 are connected in parallel with a capacitor C13, ESP 32 of the integrated chip U3 is connected to the first end of a capacitor C14, the second end of the capacitor C14 and pin 33 of the integrated chip U3 are both grounded, and pin 82 8266EX of the integrated chip U3 is type 826726.
CN202111163601.0A 2021-09-30 2021-09-30 Smoke alarm device with wide application range Pending CN113823058A (en)

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CN209895467U (en) * 2019-05-05 2020-01-03 广东海洋大学 Remote fire monitoring system based on single chip microcomputer
CN211263098U (en) * 2019-09-25 2020-08-14 南宁职业技术学院 Smoke and combustible gas detection alarm circuit

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