Kitchen fire leaving alarm system

Abstract

The utility model relates to a kitchen fire leaving alarm system, which is provided with a microprocessor for processing input and output signals; the first input end of the microprocessor is connected with a fire switch detector for detecting activity condition data of kitchen personnel; a second input end of the microprocessor is connected with a flame detector for detecting flame data of the stove; a third input end of the microprocessor is connected with the temperature sensing detector and is used for detecting kitchen temperature data; a fourth input end of the microprocessor is connected with the gas detector and is used for detecting gas leakage data; the first output end of the microprocessor is connected with the sound-light alarm module and used for sending out alarm information. A second output end of the microprocessor is connected with an alarm center, and alarms in a telephone mode and a short message mode; a third output end of the microprocessor is connected with a voice module, and a warning voice prompt is broadcasted through the voice module; and a fourth output end of the microprocessor is connected with the alarm execution mechanism module and is used for executing an alarm action.

Description

Technical Field

[0001] This utility model relates to the field of gas alarm technology, specifically to a kitchen open flame alarm system for when people are away. Background Technology

[0002] The kitchen hot work evacuation alarm system uses "human presence" detection technology to accurately sense the activity range and duration of personnel within the kitchen hot work area. When the system is activated, a microwave detector begins to scan the kitchen area for any personnel. If no personnel are detected within a certain period, the system triggers a hot work evacuation warning device, emitting an audible and visual alarm to alert personnel to return to the work area. If the personnel do not return to the work area in time, a reminder signal is sent to the control room after a certain period, and the kitchen equipment's power is automatically cut off.

[0003] In existing technologies, the collection of ignition switch and personnel activity signals for control and judgment results in limited data, insufficient accuracy, complex overall circuit structure, low integration, and complicated installation. Utility Model Content

[0004] I. Technical problems to be solved

[0005] This utility model addresses the shortcomings of existing technologies by proposing a kitchen hot work and unattended alarm system that integrates fire extinguishing control, hot work and unattended personnel evacuation, fire alarm, smoke alarm, burglar alarm, gas leak alarm, and remote control functions. This system collects data on human body, flame, and temperature to comprehensively assess the safety of kitchen operations.

[0006] A kitchen open flame alarm system includes a microprocessor for processing input and output signals. The microprocessor's first input is connected to a ignition switch detector to monitor kitchen personnel activity. Its second input is connected to a flame detector to monitor stove flame data. The microprocessor's third input is connected to a temperature detector to monitor kitchen temperature data. Its fourth input is connected to a gas detector to detect gas leak data. The microprocessor's first output is connected to an audible and visual alarm module to issue alarm messages. Its second output is connected to an alarm center for issuing alarms via telephone and SMS. Its third output is connected to a voice module to broadcast warning messages. Finally, its fourth output is connected to an alarm actuator module to perform alarm actions.

[0007] As an optimization: the alarm actuator module includes a gas solenoid valve control mechanism, a medicine solenoid valve control mechanism, and a water flow solenoid valve control mechanism.

[0008] As an optimization: the ignition switch detector is equipped with a detection switch J1, and the L terminal of the detection switch J1 is connected to the first input terminal of the rectifier bridge D29 through resistor R26;

[0009] The N terminal of the detection switch J1 is connected to the second input terminal of the rectifier bridge D29. The first output terminal of the rectifier bridge D29 is connected to the first input terminal of the opto-isolation module U2 via resistor R75. The second output terminal of the rectifier bridge D29 is connected to the second input terminal of the opto-isolation module U2. The first branch of the first output terminal of the opto-isolation module U2 is connected to the control power supply via resistor R34, and the other branch is connected to the microprocessor. The second output terminal of the opto-isolation module U2 is grounded.

[0010] As an optimization: the voice module is equipped with an amplifier U4. One branch of the positive input of the amplifier U4 is connected to the negative terminal of diode D18 via resistor R28. The positive terminal of diode D18 is connected to the buzzer input terminal. The second branch of the positive input of the amplifier U4 is connected to the audio output terminal via resistor R35 and capacitor C13. The negative input of the amplifier U4 is grounded. The negative power supply terminal of the amplifier U4 is connected to the collector of transistor Q1. The emitter of transistor Q1 is grounded, and the base is connected to the audio control terminal SPK-EN via resistor R4. The output of the amplifier U4 is connected to the voice speaker LS1.

[0011] The beneficial effects of this utility model are as follows: The main unit of the kitchen hot work / unattended alarm system is designed according to national standards and combined with practical application needs. It adopts intelligent microcomputer processing technology and is an intelligent device that uses a GSM mobile communication wireless network to transmit alarm information bidirectionally. It integrates fire extinguishing control, hot work / unattended alarm, fire alarm, smoke alarm, burglar alarm, gas leak alarm, and remote control functions into one integrated unit. It is powerful, technologically advanced, easy to operate and install, has high technological content, a wide input voltage range, strong anti-interference ability, and is safe and reliable to use. It can simultaneously store 5 sets of alarm phone numbers, such as: 110 command center, 119 command center, and mobile phone numbers, and has multiple control modes including AC or DC. It features multi-channel detection zones, on-site audible and visual alarms, wireless SMS alarms, and remote identification operation, making it an ideal choice for fire extinguishing in the kitchens of hotels, restaurants, schools, canteens, and government and enterprise units. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a circuit diagram of the microprocessor in this utility model.

[0014] Figure 3 This is a circuit diagram of the ignition switch detector in this utility model.

[0015] Figure 4 This is a circuit diagram of the voice module in this utility model. Detailed Implementation

[0016] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0017] like Figure 1 The system depicts a kitchen open flame alarm system. It includes a microprocessor for processing input and output signals. The microprocessor's first input is connected to a ignition switch detector to monitor kitchen personnel activity. Its second input is connected to a flame detector to monitor stove flame data. The microprocessor's third input is connected to a temperature detector to monitor kitchen temperature data. Its fourth input is connected to a gas detector to detect gas leak data. The microprocessor's first output is connected to an audible and visual alarm module to issue alarm messages. Its second output is connected to an alarm center for issuing alarms via telephone and SMS. Its third output is connected to a voice module to broadcast warning messages. Finally, its fourth output is connected to an alarm actuator module to perform alarm actions.

[0018] The alarm actuator module includes a gas solenoid valve control mechanism, a medicine solenoid valve control mechanism, and a water flow solenoid valve control mechanism.

[0019] like Figure 2 and Figure 3 As shown: The ignition switch detector is equipped with a detection switch J1, and the L terminal of the detection switch J1 is connected to the first input terminal of the rectifier bridge D29 via resistor R26;

[0020] The N terminal of the detection switch J1 is connected to the second input terminal of the rectifier bridge D29, and the first output terminal of the rectifier bridge D29 is connected to the first input terminal of the opto-isolation module U2 via resistor R75.

[0021] The second output terminal of the rectifier bridge D29 is connected to the second input terminal of the opto-isolation module U2. The first branch of the first output terminal of the opto-isolation module U2 is connected to the control power supply through resistor R34, and the other branch is connected to the microprocessor. The second output terminal of the opto-isolation module U2 is grounded.

[0022] like Figure 2 and Figure 4 As shown: The voice module is equipped with amplifier U4. One branch of the positive input of amplifier U4 is connected to the negative terminal of diode D18 via resistor R28. The positive terminal of diode D18 is connected to the buzzer input terminal. The other branch of the positive input of amplifier U4 is connected to the audio output terminal via resistor R35 and capacitor C13. The negative input of amplifier U4 is grounded. The negative power supply terminal of amplifier U4 is connected to the collector of transistor Q1. The emitter of transistor Q1 is grounded, and the base is connected to the audio control terminal SPK-EN via resistor R4. The output of amplifier U4 is connected to the voice speaker LS1.

[0023] When the oil temperature in the kitchen pan exceeds the limit, the temperature sensor switch fuse will trip, and this controller will initiate fire suppression. An audible and visual alarm or horn will sound. During the delay period, you can press the "Stop" button to exit. When the delay time expires, the controller will activate the gas valve to shut off the gas supply and simultaneously activate the solenoid valve to release fire extinguishing agent. After a 10-second delay, the water valve will activate to continue fire suppression to prevent reignition. In the fire suppression state, you can press the "Reset" button to exit. When kitchen staff turn on the gas stove or range hood, this controller will start working, and microwave radar or infrared detectors will continuously monitor the staff's on-duty status. When kitchen staff leave, they must return to their posts within the set warning time (1-5 minutes). The controller will not trigger an alarm to allow kitchen staff a short rest and return to their posts. After the warning time expires, this controller will activate an on-site audible and visual alarm (1-10 minutes) and broadcast a message stating, "Please return to your work station as soon as possible." It will also remotely call and send text messages to the alarm receiving center, duty room, and management personnel via GPRS module. Regardless of the location of management personnel globally, this controller can effectively transmit on-site information to the user's mobile phone, allowing the user to monitor the work status of kitchen personnel at any time. If the personnel have not returned to their work station by the alarm timeout period, this controller will automatically cut off the gas supply and fan power (solenoid valve connection required) to ensure maximum kitchen safety. Once kitchen staff return to their work station within the specified time, the controller will automatically deactivate the alarm and return to normal monitoring mode.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims.

Claims

1. A kitchen fire away-from-heat alarm system characterized by: A microprocessor is arranged to process input and output signals; A first input end of the microprocessor is connected with a fire-on switch detector for detecting kitchen personnel activity data; A second input end of the microprocessor is connected with a flame detector for detecting stove flame data; A third input end of the microprocessor is connected with a temperature detector for detecting kitchen temperature data; A fourth input end of the microprocessor is connected with a gas detector for detecting gas leakage data; A first output end of the microprocessor is connected with an audible and visual alarm module for sending alarm information; A second output end of the microprocessor is connected with an alarm center for sending alarm information through telephone and short message; A third output end of the microprocessor is connected with a voice module for sending alarm information through voice module; A fourth output end of the microprocessor is connected with an alarm execution mechanism module for executing alarm action.

2. The kitchen fire leaving home alarm system according to claim 1, characterized in that: The alarm execution mechanism module comprises a gas solenoid valve control mechanism, a medicine solenoid valve control mechanism and a water flow solenoid valve control mechanism.

3. The kitchen fire leaving home alarm system according to claim 1, characterized in that: The fire-on switch detector is provided with a detection switch J1, a L end of which is connected with a first input end of a rectifier bridge D29 through a resistor R26; A N end of the detection switch J1 is connected with a second input end of the rectifier bridge D29, a first output end of the rectifier bridge D29 is connected with a first input end of an opto-isolator module U2 through a resistor R75; A second output end of the rectifier bridge D29 is connected with a second input end of the opto-isolator module U2, a first output end of the opto-isolator module U2 is connected with a control power source through a resistor R34, and the other branch is connected with the microprocessor; and a second output end of the opto-isolator module U2 is grounded.

4. The kitchen fire leaving home alarm system according to claim 1, characterized in that: The voice module is provided with an amplifier U4, a positive input end of which is connected with a negative electrode of a diode D18 through a resistor R28, and a positive electrode of the diode D18 is connected with a buzzer input end; a second branch of the positive input end of the amplifier U4 is connected with an audio output end through a resistor R35 and a capacitor C13; and a negative input end of the amplifier U4 is grounded; A power negative end of the amplifier U4 is connected with a collector of a triode Q1, an emitter of the triode Q1 is grounded, and a base is connected with an audio control end SPK-EN through a resistor R4; and an output end of the amplifier U4 is connected with a voice speaker LS1.

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