CN214226088U - Multifunctional alarm - Google Patents
Multifunctional alarm Download PDFInfo
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- CN214226088U CN214226088U CN202023022877.0U CN202023022877U CN214226088U CN 214226088 U CN214226088 U CN 214226088U CN 202023022877 U CN202023022877 U CN 202023022877U CN 214226088 U CN214226088 U CN 214226088U
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Abstract
The utility model relates to a multifunctional alarm, its characteristics are: it includes the shell, sets up temperature detection circuit, gaseous detection circuitry and trigger signal logic control circuit in the shell, the temperature detection circuit output is connected with trigger signal logic control circuit's first input electricity, gaseous detection circuitry includes natural gas detection circuitry, carbon monoxide gas detection circuitry and coal gas detection circuitry, natural gas detection circuitry output is connected with trigger signal logic control circuit's second input electricity, carbon monoxide gas detection circuitry output is connected with trigger signal logic control circuit's third input electricity, coal gas detection circuitry output is connected with trigger signal logic control circuit's fourth input electricity, trigger signal logic control circuit output trigger signal. Has the advantages of simple structure, complete functions, practicality, applicability, safety and effectiveness.
Description
Technical Field
The utility model belongs to the security protection facility is a multi-functional alarm.
Background
The alarm used in the existing market has a single function. The modern families have many harm modes, such as electrical appliance fire, oil smoke fire, natural gas leakage, coal gas leakage and the like. The most effective method for avoiding disasters is mainly prevention and auxiliary reduction, and in order to prevent various household hazards and timely and accurately send out forecast and early warning, a multifunctional alarm suitable for families is specially designed.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: overcomes the defects of the prior art and provides a multifunctional alarm.
The utility model provides a technical problem's scheme is: a multifunctional alarm is characterized in that: it includes the shell, sets up temperature detection circuit, gaseous detection circuitry and trigger signal logic control circuit in the shell, the temperature detection circuit output is connected with trigger signal logic control circuit's first input electricity, gaseous detection circuitry includes natural gas detection circuitry, carbon monoxide gas detection circuitry and coal gas detection circuitry, natural gas detection circuitry output is connected with trigger signal logic control circuit's second input electricity, carbon monoxide gas detection circuitry output is connected with trigger signal logic control circuit's third input electricity, coal gas detection circuitry output is connected with trigger signal logic control circuit's fourth input electricity, trigger signal logic control circuit output trigger signal.
The temperature detection circuit comprises a sliding resistor RW1, a resistor R1, a four-channel operational amplifier LM324AD, a resistor R5 and a thermistor R6, wherein one end of the sliding resistor RW1 is connected with a power supply VCC through the resistor R1, the other end of the sliding resistor RW1 is grounded, and the sliding end of the sliding resistor RW1 is connected with the positive pin 3 of the four-channel operational amplifier LM324 AD; the resistor R1 is connected with the resistor R5 in parallel, the sliding resistor RW1 is connected with the thermistor R6 in parallel, and the common end of the resistor R5 and the thermistor R6 is connected with the negative pin 2 of the four-channel operational amplifier LM324 AD; an output pin 1 of the four-channel operational amplifier LM324AD is connected with an input end pin 2 of the trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with a power supply VCC, and a pin 11 is grounded.
The thermistor R6 of the temperature sensing circuit allows us-specific temperature sensing chips to be used instead.
The natural gas detection circuit comprises a natural gas sensitive sensor QM1, a sliding resistor RW5, a resistor R2, a sliding resistor RW2 and a four-channel operational amplifier LM324AD, wherein one end of the natural gas sensitive sensor QM1 is connected with a power supply VCC, the other end of the natural gas sensitive sensor QM1 is grounded through the sliding resistor RW5, the sliding end of the sliding resistor RW5 is connected with the power supply VCC through the resistor R2 and is grounded through the sliding resistor RW2, and meanwhile, the sliding end of the sliding resistor RW5 is connected with a negative electrode pin 6 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW2 is connected with a power supply VCC through a resistor R2, the other end of the sliding resistor RW2 is connected with an anode pin 5 of a four-channel operational amplifier LM324AD, an output pin 7 of the four-channel operational amplifier LM324AD is connected with an input pin 3 of a trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with the power supply VCC, and a pin 11 of the four-channel operational amplifier LM324AD is grounded.
The carbon monoxide detection circuit comprises a carbon monoxide sensitive sensor QM2, a sliding resistor RW6, a resistor R3, a sliding resistor RW3 and a four-channel operational amplifier LM324AD, wherein one end of the carbon monoxide sensitive sensor QM2 is connected with a power supply VCC, the other end of the carbon monoxide sensitive sensor QM2 is grounded through the sliding resistor RW6, the sliding end of the sliding resistor RW6 is connected with the power supply VCC through the resistor R3 and is grounded through the sliding resistor RW3, and meanwhile, the sliding end of the sliding resistor RW6 is connected with a negative electrode pin 9 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW3 is connected with a power supply VCC through a resistor R3, the other end of the sliding resistor RW3 is connected with an anode pin 10 of a four-channel operational amplifier LM324AD, an output pin 8 of the four-channel operational amplifier LM324AD is connected with an input pin 4 of a trigger signal logic control circuit, a pin 4 of a four-channel operational amplifier LM324AD is connected with the power supply VCC, and a pin 11 of the four-channel operational amplifier LM324AD is grounded.
The gas detection circuit comprises a gas sensitive sensor QM3, a sliding resistor RW7, a resistor R4, a sliding resistor RW4 and a four-channel operational amplifier LM324AD, wherein one end of the gas sensitive sensor QM3 is connected with a power supply VCC, the other end of the gas sensitive sensor QM3 is grounded through the sliding resistor RW7, the sliding end of the sliding resistor RW7 is connected with the power supply VCC through the resistor R4 and is grounded through the sliding resistor RW4, and meanwhile, the sliding end of the sliding resistor RW7 is connected with a negative electrode pin 13 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW4 is connected with a power supply VCC through a resistor R4, the other end of the sliding resistor RW4 is connected with an anode pin 12 of a four-channel operational amplifier LM324AD, an output pin 14 of the four-channel operational amplifier LM324AD is connected with an input pin 5 of a trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with the power supply VCC, and the pin 11 is grounded.
The utility model discloses a theory of operation is:
the temperature detection circuit adopts a thermistor or a U.S. special temperature detection chip, the resistance value is nearly 1 hundred kilo-ohms in a low-temperature environment, the resistance value can be reduced to hundreds of ohms in a high-temperature environment, the thermistor linearly changes along with the temperature at-40 ℃ to 200 ℃, a high level of the upper limit temperature is generated through a comparator, the temperature detection circuit outputs the high level and inputs the high level to the trigger signal logic control circuit through a first input end, and the output end of the trigger signal logic control circuit outputs a trigger signal to send to the alarm trigger circuit;
the resistance of the natural gas sensitive sensor is dozens of kilohms in the environment with low natural gas concentration, and the resistance value can be reduced to thousands to hundreds of ohms in the environment with high natural gas concentration. When the natural gas sensitive sensor does not detect natural gas, the natural gas sensitive sensor outputs a low level through the adjustable end of the sensitivity adjusting potentiometer, the comparator outputs a low level, and the circuit cannot give an alarm. Once the natural gas sensitive sensor detects that the concentration of natural gas in the surrounding environment is increased, the natural gas sensitive sensor outputs a high level through the adjustable end of the sensitivity adjusting potentiometer, the comparator outputs a high level, the natural gas detection circuit outputs a high level and inputs the high level into the trigger signal logic control circuit through the second input end, and the output end of the trigger signal logic control circuit outputs a trigger signal to send to the alarm triggering circuit. The output voltage of the natural gas sensitive sensor through the sensitivity adjusting potentiometer reflects the concentration of the natural gas. A gas depth upper limit alarm adjusting comparator compares a loop potentiometer;
the resistance of the carbon monoxide gas sensitive sensor is tens of kilo-ohms in an environment where the carbon monoxide gas concentration is low, and the resistance value can be reduced to several thousands to several hundreds of ohms in an environment where the carbon monoxide gas concentration is high. When the carbon monoxide gas sensitive sensor does not detect carbon monoxide gas, the carbon monoxide gas sensitive sensor outputs low level through the adjustable end of the sensitivity adjusting potentiometer, the comparator outputs low level, and the circuit cannot give an alarm. Once the carbon monoxide gas sensitive sensor detects that the concentration of the carbon monoxide is increased, the carbon monoxide gas sensitive sensor outputs a high level through the adjustable end of the sensitivity adjustment potentiometer, the comparator outputs a high level, the carbon monoxide detection circuit outputs a high level and inputs the high level into the trigger signal logic control circuit through the third input end, and the output end of the trigger signal logic control circuit outputs a trigger signal to send to the alarm trigger circuit. The carbon monoxide gas sensitive sensor reflects the concentration of the carbon monoxide gas through the output voltage of the sensitivity adjusting potentiometer. A gas depth upper limit alarm adjusting comparator compares a loop potentiometer;
the resistance of the gas sensor is dozens of kilohms in the environment with low gas concentration, and the resistance value can be reduced to thousands to hundreds of ohms in the environment with high gas concentration. When the gas sensor does not detect gas, the gas sensor outputs low level through the adjustable end of the sensitivity adjusting potentiometer, the comparator outputs low level, and the circuit cannot give an alarm. Once the gas sensor detects that the gas concentration is increased, the gas sensor outputs a high level through the adjustable end of the sensitivity adjusting potentiometer, the comparator outputs a high level, the gas detection circuit outputs a high level and inputs the high level into the trigger signal logic control circuit through the fourth input end, and the output end of the trigger signal logic control circuit outputs a trigger signal to send to the alarm triggering circuit. The gas sensor outputs voltage through a sensitivity adjusting potentiometer to reflect the concentration of gas. And the gas depth upper limit alarm adjusting comparator compares the loop potentiometer.
The output ends of the temperature detection circuit, the natural gas detection circuit, the carbon monoxide detection circuit and the coal gas detection circuit are respectively connected with the input end of the trigger signal logic control circuit, the temperature upper limit alarm signal and the three paths of gas overrun alarm signals are input into the signal logic control circuit, any one path of signals is triggered, and the trigger signal logic control circuit can output high level as the trigger signal to send the alarm trigger circuit to alarm.
The utility model has the advantages that: the intelligent household fire-fighting alarm can be used in occasions such as a household kitchen, a bedroom, a living room and the like, is sensitive to electric appliance fire, oil smoke fire, natural gas leakage, gas leakage and the like, is particularly matched with an automatic early warning and alarm mutual aid rescue door, can early find, forecast and alarm, is mainly prevented, and is assisted by small fire, so that household disasters are avoided, and the safety of household property is guaranteed. Has the advantages of simple structure, complete functions, practicality, applicability, safety and effectiveness.
Drawings
FIG. 1 is a schematic circuit diagram of the multifunctional alarm of the present invention;
FIG. 2 is a circuit diagram of the temperature detection of the multifunctional alarm of the present invention;
FIG. 3 is a natural gas detection circuit diagram of the multifunctional alarm of the present invention;
FIG. 4 is a circuit diagram of a carbon monoxide detection circuit of the multifunctional alarm of the present invention;
fig. 5 is a gas detection circuit diagram of the multifunctional alarm of the utility model.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1-5, in embodiment 1, the multifunctional alarm of this embodiment includes a housing, a temperature detection circuit, a gas detection circuit, and a trigger signal logic control circuit are disposed in the housing, an output end of the temperature detection circuit is electrically connected to a first input end of the trigger signal logic control circuit, the gas detection circuit includes a natural gas detection circuit, a carbon monoxide gas detection circuit, and a gas detection circuit, an output end of the natural gas detection circuit is electrically connected to a second input end of the trigger signal logic control circuit, an output end of the carbon monoxide gas detection circuit is electrically connected to a third input end of the trigger signal logic control circuit, an output end of the gas detection circuit is electrically connected to a fourth input end of the trigger signal logic control circuit, and an output end of the trigger signal logic control circuit outputs a trigger signal.
The temperature detection circuit comprises a sliding resistor RW1, a resistor R1, a four-channel operational amplifier LM324AD, a resistor R5 and a thermistor R6, wherein one end of the sliding resistor RW1 is connected with a power supply VCC through the resistor R1, the other end of the sliding resistor RW1 is grounded, and the sliding end of the sliding resistor RW1 is connected with the positive pin 3 of the four-channel operational amplifier LM324 AD; the resistor R1 is connected with the resistor R5 in parallel, the sliding resistor RW1 is connected with the thermistor R6 in parallel, and the common end of the resistor R5 and the thermistor R6 is connected with the negative pin 2 of the four-channel operational amplifier LM324 AD; an output pin 1 of the four-channel operational amplifier LM324AD is connected with an input end pin 2 of the trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with a power supply VCC, and a pin 11 is grounded.
The natural gas detection circuit comprises a natural gas sensitive sensor QM1, a sliding resistor RW5, a resistor R2, a sliding resistor RW2 and a four-channel operational amplifier LM324AD, wherein one end of the natural gas sensitive sensor QM1 is connected with a power supply VCC, the other end of the natural gas sensitive sensor QM1 is grounded through the sliding resistor RW5, the sliding end of the sliding resistor RW5 is connected with the power supply VCC through the resistor R2 and is grounded through the sliding resistor RW2, and meanwhile, the sliding end of the sliding resistor RW5 is connected with a negative electrode pin 6 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW2 is connected with a power supply VCC through a resistor R2, the other end of the sliding resistor RW2 is connected with an anode pin 5 of a four-channel operational amplifier LM324AD, an output pin 7 of the four-channel operational amplifier LM324AD is connected with an input pin 3 of a trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with the power supply VCC, and a pin 11 of the four-channel operational amplifier LM324AD is grounded.
The carbon monoxide detection circuit comprises a carbon monoxide sensitive sensor QM2, a sliding resistor RW6, a resistor R3, a sliding resistor RW3 and a four-channel operational amplifier LM324AD, wherein one end of the carbon monoxide sensitive sensor QM2 is connected with a power supply VCC, the other end of the carbon monoxide sensitive sensor QM2 is grounded through the sliding resistor RW6, the sliding end of the sliding resistor RW6 is connected with the power supply VCC through the resistor R3 and is grounded through the sliding resistor RW3, and meanwhile, the sliding end of the sliding resistor RW6 is connected with a negative electrode pin 9 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW3 is connected with a power supply VCC through a resistor R3, the other end of the sliding resistor RW3 is connected with an anode pin 10 of a four-channel operational amplifier LM324AD, an output pin 8 of the four-channel operational amplifier LM324AD is connected with an input pin 4 of a trigger signal logic control circuit, a pin 4 of a four-channel operational amplifier LM324AD is connected with the power supply VCC, and a pin 11 of the four-channel operational amplifier LM324AD is grounded.
The gas detection circuit comprises a gas sensitive sensor QM3, a sliding resistor RW7, a resistor R4, a sliding resistor RW4 and a four-channel operational amplifier LM324AD, wherein one end of the gas sensitive sensor QM3 is connected with a power supply VCC, the other end of the gas sensitive sensor QM3 is grounded through the sliding resistor RW7, the sliding end of the sliding resistor RW7 is connected with the power supply VCC through the resistor R4 and is grounded through the sliding resistor RW4, and meanwhile, the sliding end of the sliding resistor RW7 is connected with a negative electrode pin 13 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW4 is connected with a power supply VCC through a resistor R4, the other end of the sliding resistor RW4 is connected with an anode pin 12 of a four-channel operational amplifier LM324AD, an output pin 14 of the four-channel operational amplifier LM324AD is connected with an input pin 5 of a trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with the power supply VCC, and the pin 11 is grounded.
The present embodiment is manufactured by using the prior art, and various components used in the present embodiment are commercially available products in the prior art.
The working process of the embodiment is as follows: at ordinary times, the resistance values of the thermistor, the natural gas sensitive sensor, the carbon monoxide gas sensitive sensor and the gas sensor of the temperature detection circuit, the natural gas sensitive sensor, the carbon monoxide gas sensitive sensor and the gas sensor are dozens of kilo-ohms to nearly hundreds of kilo-ohms, once the temperature rises to reach the upper limit temperature of the comparator or the concentration of any one corresponding gas is detected to increase, the resistance values of the thermistor, the natural gas sensitive sensor, the carbon monoxide gas sensitive sensor and the gas sensor are reduced to thousands of ohms to hundreds of ohms, the comparator outputs a high level, the corresponding detection circuit also outputs a high level and inputs the high level to the trigger signal logic control circuit through the corresponding input end, and when any one signal is triggered, the trigger signal logic control circuit outputs the high level as a trigger signal to alarm the trigger circuit to alarm.
The alarm triggering circuit can be implemented by a person skilled in the art according to the prior art.
The embodiment is not limited to the present specific embodiment, and it will be apparent to those skilled in the art that simple duplication and modification without inventive work are within the scope of the present embodiment as claimed in the claims.
Claims (5)
1. A multifunctional alarm is characterized in that: it includes the shell, sets up temperature detection circuit, gaseous detection circuitry and trigger signal logic control circuit in the shell, the temperature detection circuit output is connected with trigger signal logic control circuit's first input electricity, gaseous detection circuitry includes natural gas detection circuitry, carbon monoxide gas detection circuitry and coal gas detection circuitry, natural gas detection circuitry output is connected with trigger signal logic control circuit's second input electricity, carbon monoxide gas detection circuitry output is connected with trigger signal logic control circuit's third input electricity, coal gas detection circuitry output is connected with trigger signal logic control circuit's fourth input electricity, trigger signal logic control circuit output trigger signal.
2. The multi-function alarm of claim 1, further comprising: the temperature detection circuit comprises a sliding resistor RW1, a resistor R1, a four-channel operational amplifier LM324AD, a resistor R5 and a thermistor R6, wherein one end of the sliding resistor RW1 is connected with a power supply VCC through the resistor R1, the other end of the sliding resistor RW1 is grounded, and the sliding end of the sliding resistor RW1 is connected with the positive pin 3 of the four-channel operational amplifier LM324 AD; the resistor R1 is connected with the resistor R5 in parallel, the sliding resistor RW1 is connected with the thermistor R6 in parallel, and the common end of the resistor R5 and the thermistor R6 is connected with the negative pin 2 of the four-channel operational amplifier LM324 AD; an output pin 1 of the four-channel operational amplifier LM324AD is connected with an input end pin 2 of the trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with a power supply VCC, and a pin 11 is grounded.
3. The multi-function alarm of claim 1, further comprising: the natural gas detection circuit comprises a natural gas sensitive sensor QM1, a sliding resistor RW5, a resistor R2, a sliding resistor RW2 and a four-channel operational amplifier LM324AD, wherein one end of the natural gas sensitive sensor QM1 is connected with a power supply VCC, the other end of the natural gas sensitive sensor QM1 is grounded through the sliding resistor RW5, the sliding end of the sliding resistor RW5 is connected with the power supply VCC through the resistor R2 and is grounded through the sliding resistor RW2, and meanwhile, the sliding end of the sliding resistor RW5 is connected with a negative electrode pin 6 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW2 is connected with a power supply VCC through a resistor R2, the other end of the sliding resistor RW2 is connected with an anode pin 5 of a four-channel operational amplifier LM324AD, an output pin 7 of the four-channel operational amplifier LM324AD is connected with an input pin 3 of a trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with the power supply VCC, and a pin 11 of the four-channel operational amplifier LM324AD is grounded.
4. The multi-function alarm of claim 1, further comprising: the carbon monoxide gas detection circuit comprises a carbon monoxide sensitive sensor QM2, a sliding resistor RW6, a resistor R3, a sliding resistor RW3 and a four-channel operational amplifier LM324AD, wherein one end of the carbon monoxide sensitive sensor QM2 is connected with a power supply VCC, the other end of the carbon monoxide sensitive sensor QM2 is grounded through the sliding resistor RW6, the sliding end of the sliding resistor RW6 is connected with the power supply VCC through the resistor R3 and is grounded through the sliding resistor RW3, and meanwhile, the sliding end of the sliding resistor RW6 is connected with a negative electrode pin 9 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW3 is connected with a power supply VCC through a resistor R3, the other end of the sliding resistor RW3 is connected with an anode pin 10 of a four-channel operational amplifier LM324AD, an output pin 8 of the four-channel operational amplifier LM324AD is connected with an input pin 4 of a trigger signal logic control circuit, a pin 4 of a four-channel operational amplifier LM324AD is connected with the power supply VCC, and a pin 11 of the four-channel operational amplifier LM324AD is grounded.
5. The multi-function alarm of claim 1, further comprising: the gas detection circuit comprises a gas sensitive sensor QM3, a sliding resistor RW7, a resistor R4, a sliding resistor RW4 and a four-channel operational amplifier LM324AD, wherein one end of the gas sensitive sensor QM3 is connected with a power supply VCC, the other end of the gas sensitive sensor QM3 is grounded through the sliding resistor RW7, the sliding end of the sliding resistor RW7 is connected with the power supply VCC through the resistor R4 and is grounded through the sliding resistor RW4, and meanwhile, the sliding end of the sliding resistor RW7 is connected with a negative electrode pin 13 of the four-channel operational amplifier LM324 AD; one end of a sliding resistor RW4 is connected with a power supply VCC through a resistor R4, the other end of the sliding resistor RW4 is connected with an anode pin 12 of a four-channel operational amplifier LM324AD, an output pin 14 of the four-channel operational amplifier LM324AD is connected with an input pin 5 of a trigger signal logic control circuit, a pin 4 of the four-channel operational amplifier LM324AD is connected with the power supply VCC, and the pin 11 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023022877.0U CN214226088U (en) | 2020-12-16 | 2020-12-16 | Multifunctional alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023022877.0U CN214226088U (en) | 2020-12-16 | 2020-12-16 | Multifunctional alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214226088U true CN214226088U (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023022877.0U Active CN214226088U (en) | 2020-12-16 | 2020-12-16 | Multifunctional alarm |
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| Country | Link |
|---|---|
| CN (1) | CN214226088U (en) |
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2020
- 2020-12-16 CN CN202023022877.0U patent/CN214226088U/en active Active
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Effective date of registration: 20230314 Address after: 1256, Floor 2, Building 3, Yard 9, Derun South Road, Fangshan District, Beijing, 102400 (cluster registration) Patentee after: Zhonghao Ronghui (Beijing) Emergency Technology Co.,Ltd. Address before: 274000 Shandong Mudan e-commerce Industrial Park, 150m east of Linshang intersection of national highway 220, Mudan District, Heze City, Shandong Province Patentee before: Shandong shiwanjia fire fighting equipment Co.,Ltd. |
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