CN211902988U - Gas-cooker closes fire reminding device - Google Patents
Gas-cooker closes fire reminding device Download PDFInfo
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- CN211902988U CN211902988U CN202020470742.1U CN202020470742U CN211902988U CN 211902988 U CN211902988 U CN 211902988U CN 202020470742 U CN202020470742 U CN 202020470742U CN 211902988 U CN211902988 U CN 211902988U
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- 239000003990 capacitor Substances 0.000 claims description 18
- 238000010411 cooking Methods 0.000 abstract description 7
- 230000006698 induction Effects 0.000 abstract 1
- 210000000056 organ Anatomy 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
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Abstract
Forget to close gas-cooker stove fire to people, lead to the problem of cooking utensil pot bottom burnt out, cause the conflagration even, the utility model provides a gas-cooker closes fire reminding device, the device's circuit mainly comprises voltage comparator and the square wave oscillator that 555 integrated circuit constitutes that human infrared induction module, flame sensor, bee calling organ, integrated fortune are put. A gas stove fire-off reminding device belongs to the technical field of electronics. When the gas stove is on fire and no person is in front of the cooking bench for about 3 minutes, the device can give out sound and light alarm to remind a user to turn off the fire in time, so that accidents are avoided.
Description
Technical Field
The utility model relates to a reminding device, especially a gas-cooker fire-off reminding device belong to electron technical field.
Background
Often, news reports are reported, and the bottom of a cooker is burnt dry and burnt due to the fact that people forget to close the fire of a gas stove, and a fire disaster is caused in a more serious case. Therefore, in order to avoid possible harm caused by forgetting to shut down the fire when people use the gas stove, the gas stove fire shut-down reminding device is necessary to be designed, and when the gas stove is on fire and no person is in front of a cooking bench for more than 3 minutes, the device can give out sound and light alarm to remind a user to shut down the fire in time.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fire reminding device is closed to gas-cooker, when the gas-cooker under the condition of firing on a fire, and unmanned in the preceding 3 minutes of surpassing of top of a kitchen range, the device will send audible and visual alarm, reminds the user in time to close the fire.
The utility model discloses the concrete technical scheme who takes as follows:
the utility model provides a gas-cooker closes fire reminding device which characterized by: the circuit of the device comprises a human body infrared sensing module U1, an integrated operational amplifier U2, a 555 integrated circuit U3, a flame sensor LDR1, resistors R1-R5, capacitors C1 and C2, a light emitting diode LED1, a triode Q1, a potentiometer RV1 and a buzzer BUZ1, wherein a pin 1 of the human body infrared sensing module U1 is connected with +5V, a pin 2 is connected with one end of a resistor R3, a pin 3 is grounded with an emitter of the triode Q1, and the other end of the resistor R3 is connected with a base of a triode Q1; the anode of the flame sensor LDR1 is connected with one end of the resistors R1 and R2, the cathode of the flame sensor LDR1 is grounded, and the other end of the resistor R1 is connected with + 5V; the positive phase input end of the integrated operational amplifier U2 is connected with the other end of a resistor R2, the positive electrode of a capacitor C1 and the collector of a triode Q1, the negative phase input end of the integrated operational amplifier U2 is connected with the sliding end of a potentiometer RV1, the output end of the integrated operational amplifier U2 is connected with a pin 4 of an integrated circuit U3, one fixed end of the potentiometer RV1 is connected with +5V, and the other fixed end of the potentiometer RV1 and the negative electrode of the capacitor C1 are grounded; a pin 2 of a 555 integrated circuit U3 is connected with a pin 6, one end of a resistor R4 and the anode of a capacitor C2, a pin 3 is connected with the other end of the resistor R4, one end of the resistor R5 and the anode of a buzzer BUZ1, a pin 8 is connected with +5V, and a pin 1 and the cathode of the capacitor C2 are grounded; the other end of the resistor R5 is connected with the anode of a light-emitting diode LED1, and the cathode of the light-emitting diode LED1 and the cathode of the buzzer BUZ1 are grounded; the human body infrared sensing module U1 adopts HC-SR 501.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, a fire-off reminding device for a gas stove, a circuit of the device comprises a human body infrared sensing module U1, an integrated operational amplifier U2, an integrated circuit U3 of 555, a flame sensor LDR1, resistors R1-R5, capacitors C1 and C2, a light-emitting diode LED1, a triode Q1, a potentiometer RV1 and a buzzer BUZ1, wherein a pin 1 of the human body infrared sensing module U1 is connected with +5V, a pin 2 is connected with one end of a resistor R3, a pin 3 is grounded with an emitter of a triode Q1, and the other end of the resistor R3 is connected with a base of the triode Q1; the anode of the flame sensor LDR1 is connected with one end of the resistors R1 and R2, the cathode of the flame sensor LDR1 is grounded, and the other end of the resistor R1 is connected with + 5V; the positive phase input end of the integrated operational amplifier U2 is connected with the other end of a resistor R2, the positive electrode of a capacitor C1 and the collector of a triode Q1, the negative phase input end of the integrated operational amplifier U2 is connected with the sliding end of a potentiometer RV1, the output end of the integrated operational amplifier U2 is connected with a pin 4 of an integrated circuit U3, one fixed end of the potentiometer RV1 is connected with +5V, and the other fixed end of the potentiometer RV1 and the negative electrode of the capacitor C1 are grounded; a pin 2 of a 555 integrated circuit U3 is connected with a pin 6, one end of a resistor R4 and the anode of a capacitor C2, a pin 3 is connected with the other end of the resistor R4, one end of the resistor R5 and the anode of a buzzer BUZ1, a pin 8 is connected with +5V, and a pin 1 and the cathode of the capacitor C2 are grounded; the other end of the resistor R5 is connected with the anode of a light-emitting diode LED1, and the cathode of the light-emitting diode LED1 and the cathode of the buzzer BUZ1 are grounded; the human body infrared sensing module U1 adopts HC-SR 501.
When a person is in front of the cooking bench, 2 feet of the human body infrared sensing module U1 output high level, the triode Q1 is driven to work in a saturation conducting state through the resistor R3, the voltage of the positive phase input end of the integrated operational amplifier U2 is lower than the reference voltage set by the negative phase input end, the integrated operational amplifier U2 outputs low level, 4 feet of the 555 integrated circuit U3 are maintained in a reset state, 3 feet output low level, and the light emitting diode LED1 and the buzzer BUZ1 stop working; when no person is in front of the cooking bench, 2 feet of the human body infrared sensing module U1 output low level, the triode Q1 is enabled to work in a cut-off state through the resistor R3, under the condition, when the flame sensor LDR1 detects that flame exists on the cooking bench, the voltage at two ends of the flame sensor LDR1 is close to +5V, the capacitor C1 is charged through the resistor R2, the voltage at two ends of the capacitor C1 continuously rises, after about 3 minutes of charging, the voltage at the positive phase input end of the integrated operational amplifier U2 exceeds the reference voltage set by the negative phase input end, the integrated operational amplifier U2 outputs high level, 4 feet of the 555 integrated circuit U3 are made to be high level, an oscillating circuit consisting of the 555 integrated circuit U3, the resistor R4 and the capacitor C2 starts to work, a square wave signal with the frequency of about 10Hz is output, the light emitting diode LED1 and the buzzer BUZ1 give out audible and visual alarm, a user can remind that the fire on the cooking bench is burnt for more than 3 minutes under the unattended condition, and timely treatment is needed to avoid accidents.
Claims (2)
1. The utility model provides a gas-cooker closes fire reminding device which characterized by: the circuit of the device comprises a human body infrared sensing module U1, an integrated operational amplifier U2, a 555 integrated circuit U3, a flame sensor LDR1, resistors R1-R5, capacitors C1 and C2, a light emitting diode LED1, a triode Q1, a potentiometer RV1 and a buzzer BUZ1, wherein a pin 1 of the human body infrared sensing module U1 is connected with +5V, a pin 2 is connected with one end of a resistor R3, a pin 3 is grounded with an emitter of the triode Q1, and the other end of the resistor R3 is connected with a base of a triode Q1; the anode of the flame sensor LDR1 is connected with one end of the resistors R1 and R2, the cathode of the flame sensor LDR1 is grounded, and the other end of the resistor R1 is connected with + 5V; the positive phase input end of the integrated operational amplifier U2 is connected with the other end of a resistor R2, the positive electrode of a capacitor C1 and the collector of a triode Q1, the negative phase input end of the integrated operational amplifier U2 is connected with the sliding end of a potentiometer RV1, the output end of the integrated operational amplifier U2 is connected with a pin 4 of an integrated circuit U3, one fixed end of the potentiometer RV1 is connected with +5V, and the other fixed end of the potentiometer RV1 and the negative electrode of the capacitor C1 are; a pin 2 of a 555 integrated circuit U3 is connected with a pin 6, one end of a resistor R4 and the anode of a capacitor C2, a pin 3 is connected with the other end of the resistor R4, one end of the resistor R5 and the anode of a buzzer BUZ1, a pin 8 is connected with +5V, and a pin 1 and the cathode of the capacitor C2 are grounded; the other end of the resistor R5 is connected with the anode of the light-emitting diode LED1, and the cathode of the light-emitting diode LED1 and the cathode of the buzzer BUZ1 are grounded.
2. The fire-stopping reminding device for the gas stove as claimed in claim 1, which is characterized in that: the human body infrared sensing module U1 adopts HC-SR 501.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020470742.1U CN211902988U (en) | 2020-04-02 | 2020-04-02 | Gas-cooker closes fire reminding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020470742.1U CN211902988U (en) | 2020-04-02 | 2020-04-02 | Gas-cooker closes fire reminding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211902988U true CN211902988U (en) | 2020-11-10 |
Family
ID=73272624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020470742.1U Expired - Fee Related CN211902988U (en) | 2020-04-02 | 2020-04-02 | Gas-cooker closes fire reminding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211902988U (en) |
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2020
- 2020-04-02 CN CN202020470742.1U patent/CN211902988U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |