Kitchen fire unmanned state timeout sound-light alarm device

Abstract

The invention discloses a kitchen fire unmanned state timeout sound-light alarm device which comprises a human body sensor, a relay, a temperature sensor and a sound-light alarm. The signal output end of the human body sensor is electrically connected with the driving end of the relay and is used for transmitting an on-off control signal to the relay; a normally closed contact of the relay is electrically connected with a power supply input end of the temperature sensor; the kitchen safety alarm system relates to the technical field of kitchen safety alarm, adopts a human body induction and temperature dual judgment mechanism, triggers alarm when dual conditions are achieved, avoids false alarms in scenes that people normally use fire, no people but no open fire and the like, improves the recognition accuracy, and improves the safety of kitchen safety. Alarm sound penetrating power of the audible and visual alarm is high, the whole family can be quickly alerted, single-person fire supervision is upgraded to whole-family joint supervision, danger caused by single-person forgetting is greatly reduced, and adaptability to old people forgetful scenes is high.

Description

Technical Field

[0001] This invention relates to the field of kitchen safety technology, specifically to an audible and visual alarm device for a kitchen where no one is using the stove for an extended period of time. Background Technology

[0002] Kitchen fire safety is a core issue of home safety, especially in an aging society where forgetfulness among the elderly frequently leads to accidents such as food burnt, pot damage, gas leaks, and even fires. This also results in energy waste and air pollution. Current kitchen safety equipment on the market suffers from significant technological gaps and functional deficiencies, failing to meet comprehensive fire safety needs. Traditional gas alarms can only detect excessive gas concentrations and cannot distinguish between normal cooking and unattended cooking, leading to false alarms or missed alarms. Smoke alarms only trigger after smoke is produced following a fire, resulting in delayed warnings and failing to prevent initial danger. To address these technological gaps and deficiencies, there is an urgent need for an integrated device that can identify unattended cooking in the kitchen and provide audible and visual alarms. This would fill the market gap, address the safety hazards of elderly people forgetting to turn off the stove and gas, and simultaneously save energy and protect property. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an audible and visual alarm device for kitchens where no one is using the gas for an extended period, solving the problem of false alarms or missed alarms that are common in existing gas alarms.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a kitchen fire-use unattended state timeout audible and visual alarm device, comprising a human body sensor, a relay, a temperature sensor and an audible and visual alarm; The signal output terminal of the human body sensor is electrically connected to the drive terminal of the relay, and is used to transmit on / off control signals to the relay. The normally closed contact of the relay is electrically connected to the power input terminal of the temperature sensor. The OUT signal output terminal of the temperature sensor is electrically connected to the power input terminal of the audible and visual alarm. The temperature sensor is equipped with a temperature sensing probe, which is connected to the main body of the temperature sensor via a signal cable.

[0005] Preferably, the human body sensor is used to sense whether there is anyone in the kitchen. When someone is sensed, it outputs an electrical signal to drive the relay to engage. When no one is sensed and the time exceeds a preset time, the relay releases. The relay controls the power supply to the temperature sensor by switching the contact state. When the relay is energized, the normally closed contact is open and the normally open contact is energized, and the temperature sensor is de-energized. When the relay is released, the normally closed contact is closed, and the temperature sensor is energized and operates. The temperature sensor is used to display the current temperature of the kitchen and the temperature of the fire at a specific location. When the detected temperature is higher than the room temperature by a preset temperature difference and reaches the set temperature threshold, it is determined to be in the fire-use state and an electrical signal is output through the OUT terminal. The audible and visual alarm is electrically connected to the OUT terminal of the temperature sensor. After receiving the output signal from the temperature sensor, the alarm is activated until the human body sensor detects a person again. At this point, the relay is activated to de-energize the temperature sensor, and the alarm stops.

[0006] Preferably, the preset timeout time of the human body sensor is 3-5 minutes. After the unattended state continues for this time, the relay triggers a release action.

[0007] Preferably, the temperature sensor probe is fixedly installed below the smoke extractor, the temperature difference is set to be more than 5°C higher than the normal temperature, and the highest point of the set temperature threshold is 45°C.

[0008] Preferably, the temperature sensor outputs an electrical signal through the OUT terminal to drive the audible and visual alarm when the relay is powered on at its normally closed point and both the preset temperature difference and temperature threshold are met.

[0009] Preferably, it also includes a gas shut-off control module, which is electrically connected to another set of contacts of the relay. The gas shut-off control module is an electromagnetic valve or a robotic arm, adapted to the kitchen gas pipeline, and used to perform the gas shut-off action.

[0010] When the gas shut-off control module is an electromagnetic valve, it is connected to the gas pipeline flange; when it is a robotic arm, it is adapted to the gas valve handle and achieves valve shut-off through mechanical clamping and rotation. Both types of gas shut-off control modules are equipped with a manual reset button. After reset, the gas pipeline returns to a controllable on / off state.

[0011] Preferably, it also includes a WIFI communication module for receiving remote gas shut-off commands and transmitting them to the gas shut-off control module.

[0012] Preferably, the WiFi communication module supports 2.4G / 5G dual-band and can send gas shut-off commands via a mobile APP or remote terminal.

[0013] Preferably, it also includes an SOS communication module, which has at least one family member contact number pre-stored in it, and can trigger a dialing of the preset number to achieve emergency contact.

[0014] Preferably, the SOS communication module has a built-in SIM card with 1-3 pre-stored family contact numbers. When dialing, it calls in a preset order until the call is connected or ends after 3 calls. After the call is connected, two-way voice communication can be achieved through the microphone and speaker built into the SOS communication module.

[0015] Beneficial effects This invention provides an audible and visual alarm device for kitchens where no one is using the stove for an extended period of time, which has the following advantages: Employing a dual judgment mechanism of human body induction and temperature, the alarm is triggered when both conditions are met, avoiding false alarms in scenarios such as someone using fire normally or no one being present but no open flame, thus improving the recognition accuracy. The audible and visual alarm has strong penetrating sound, allowing the whole family to be alerted quickly. It upgrades the supervision of fire use from a single person to joint supervision by the whole family, significantly reducing the danger caused by a single person forgetting. It is highly adaptable to scenarios where the elderly are forgetful. Moreover, this device uses mature components such as human body sensors, relays, and temperature sensors, with simple circuitry, stable and reliable performance, and no complicated settings required. The elderly can quickly get started, and it is suitable for various family kitchens. The installation is flexible and does not disrupt the original kitchen layout, bringing convenience to people. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structural control of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1 The present invention provides a technical solution: a kitchen fire-use unattended state timeout sound and light alarm device, including a human body sensor, a relay, a temperature sensor and a sound and light alarm; The signal output terminal of the human body sensor is electrically connected to the drive terminal of the relay, and is used to transmit on / off control signals to the relay. The normally closed contact of the relay is electrically connected to the power input terminal of the temperature sensor. The OUT signal output terminal of the temperature sensor is electrically connected to the power input terminal of the audible and visual alarm. The temperature sensor is equipped with a temperature sensing probe, which is connected to the main body of the temperature sensor via a signal cable.

[0019] In this embodiment, the human body sensor is used to sense whether there is anyone in the kitchen. When someone is sensed, it outputs an electrical signal to drive the relay to engage. When no one is sensed and the preset time has elapsed, the relay releases. The relay controls the power supply to the temperature sensor by switching the contact state. When the relay is energized, the normally closed contact is open and the normally open contact is energized, and the temperature sensor is de-energized. When the relay is released, the normally closed contact is closed, and the temperature sensor is energized and operates. The temperature sensor is used to display the current temperature of the kitchen and the temperature of the fire at a specific location. When the detected temperature is higher than the room temperature by a preset temperature difference and reaches the set temperature threshold, it is determined to be in the fire-use state and an electrical signal is output through the OUT terminal. The audible and visual alarm is electrically connected to the OUT terminal of the temperature sensor. After receiving the output signal from the temperature sensor, the alarm is activated until the human body sensor detects a person again. At this point, the relay is activated to de-energize the temperature sensor, and the alarm stops.

[0020] In this embodiment, the preset timeout time of the human body sensor is 3-5 minutes. After the unattended state continues for this time, the relay triggers a release action.

[0021] In this embodiment, the temperature sensor's probe is fixedly installed below the smoke extractor, the temperature difference is set to be more than 5°C higher than the normal temperature, and the highest point of the set temperature threshold is 45°C.

[0022] In this embodiment, the temperature sensor is further configured to drive the audible and visual alarm by outputting an electrical signal through the OUT terminal when the power supply is turned on at the normally closed point of the relay and the preset temperature difference and temperature threshold are met simultaneously.

[0023] This embodiment is further configured to include a gas shut-off control module, which is electrically connected to another set of contacts of the relay. The gas shut-off control module is an electromagnetic valve or a robotic arm, adapted to the kitchen gas pipeline, and used to perform the gas shut-off action.

[0024] When the gas shut-off control module is an electromagnetic valve, it is connected to the gas pipeline flange; when it is a robotic arm, it is adapted to the gas valve handle and achieves valve shut-off through mechanical clamping and rotation. Both types of gas shut-off control modules are equipped with a manual reset button. After reset, the gas pipeline returns to a controllable on / off state.

[0025] This embodiment is further configured to include a WIFI communication module for receiving remote gas shut-off commands and transmitting them to the gas shut-off control module.

[0026] In this embodiment, the WiFi communication module is further configured to support 2.4G / 5G dual-band, and send gas shut-off commands via a mobile APP or remote terminal.

[0027] This embodiment is further configured to include an SOS communication module, which has at least one family member contact number pre-stored in it, and can trigger a dialing of the preset number to achieve emergency contact.

[0028] In this embodiment, the SOS communication module is further configured to have a built-in SIM card with 1-3 pre-stored family contact numbers. When dialing, the calls are made in a preset order until the call is connected or ends after 3 calls. After the call is connected, two-way voice communication can be achieved through the microphone and speaker built into the SOS communication module.

[0029] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0030] Example: During use, when someone is using fire in the kitchen, the human body sensor detects the human signal and outputs an electrical signal to drive the relay to engage. The normally closed contact of the relay opens, the temperature sensor is de-energized, and only displays room temperature. The audible and visual alarms do not activate, thus not interfering with normal fire use. The temperature controller detects the temperature rise through the temperature sensor probe. If the time away exceeds a preset threshold (which can be set to 3-5 minutes), the human body sensor outputs an unattended signal, the relay releases, the normally closed contact closes, and the temperature sensor is energized. If the temperature sensor probe detects a temperature more than 5°C higher than room temperature and reaches 45°C, the temperature sensor determines that fire is in use. The OUT terminal outputs an electrical signal to drive the audible and visual alarm to emit a "beep beep beep" sound, which will automatically stop when someone enters the kitchen. If someone enters the kitchen at this time, the human body sensor will immediately output a signal, the temperature sensor will lose power and will not work, and there will be no display. The audible and visual alarm will also lose power and stop working. If the thermostat cannot sense the temperature through the fixed position under the range hood, the thermostat will be in a normal temperature state. Without the set temperature difference, the thermostat will only display the normal temperature and will not output any signal. Of course, there will be no audible and visual alarm if the temperature sensor is not set. At this time, regardless of whether there are people in the kitchen, because the temperature sensor has no output, it will only display the normal temperature and will not output an alarm.

[0031] This alarm device can trigger the gas shut-off control module via a relay when there is no one in the alarm state after accumulating 2 or 3 alarms. The solenoid valve / mechanical arm will automatically cut off the gas pipeline. This alarm device can also remotely shut off the gas valve directly via Wi-Fi signal. This alarm device can also answer SOS emergency calls to a set number to contact family members to confirm the actual situation of the fire.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kitchen fire ignition and light alarm device for an unattended cooking period exceeding the specified time, characterized in that, This includes human body sensors, relays, temperature sensors, and audible and visual alarms; The signal output terminal of the human body sensor is electrically connected to the drive terminal of the relay, and is used to transmit on / off control signals to the relay. The normally closed contact of the relay is electrically connected to the power input terminal of the temperature sensor. The OUT signal output terminal of the temperature sensor is electrically connected to the power input terminal of the audible and visual alarm. The temperature sensor is equipped with a temperature sensing probe, which is connected to the main body of the temperature sensor via a signal cable.

2. The kitchen fire-use unattended status timeout alarm device according to claim 1, characterized in that, The human body sensor is used to detect whether there is anyone in the kitchen. When someone is detected, it outputs an electrical signal to drive the relay to engage. When no one is detected and the preset time has elapsed, the relay releases. The relay controls the power supply to the temperature sensor by switching the contact state. When the relay is energized, the normally closed contact is open and the normally open contact is energized, and the temperature sensor is de-energized. When the relay is released, the normally closed contact is closed, and the temperature sensor is energized and operates. The temperature sensor is used to display the current temperature of the kitchen and the temperature of the fire at a specific location. When the detected temperature is higher than the room temperature by a preset temperature difference and reaches the set temperature threshold, it is determined to be in the fire-use state and an electrical signal is output through the OUT terminal. The audible and visual alarm is electrically connected to the OUT terminal of the temperature sensor. After receiving the output signal from the temperature sensor, the alarm is activated until the human body sensor detects a person again. At this point, the relay is activated to de-energize the temperature sensor, and the alarm stops.

3. The audible and visual alarm device for unattended kitchen use as described in claim 2, characterized in that, The preset timeout period for the human body sensor is 3-5 minutes. After the unattended state continues for this time, the relay will trigger a release action.

4. A kitchen fire-use unattended status timeout alarm device according to claim 2, characterized in that, The temperature sensor's probe is fixedly installed below the smoke extractor, with the temperature difference set to be more than 5°C higher than normal temperature, and the highest temperature threshold set to 45°C.

5. A kitchen fire-use unattended status timeout alarm device according to claim 2, characterized in that, When the temperature sensor is powered on at the normally closed point of the relay and simultaneously meets the preset temperature difference and temperature threshold, it outputs an electrical signal through the OUT terminal to drive the audible and visual alarm.

6. The audible and visual alarm device for unattended kitchen use as described in claim 1, characterized in that, It also includes a gas shut-off control module, which is electrically connected to another set of contacts of the relay. The gas shut-off control module is an electromagnetic valve or a robotic arm, adapted to the kitchen gas pipeline, and used to perform the gas shut-off action.

7. A kitchen fire-use unattended status timeout alarm device according to claim 1, characterized in that, It also includes a WIFI communication module, which is used to receive remote gas shut-off commands and transmit them to the gas shut-off control module.

8. A kitchen fire-use unattended status timeout alarm device according to claim 7, characterized in that, The WiFi communication module supports 2.4G / 5G dual-band and can send gas shut-off commands via a mobile APP or remote terminal.

9. A kitchen fire-use unattended status timeout alarm device according to claim 1, characterized in that, It also includes an SOS communication module, which has at least one family member contact number pre-stored in it and can trigger a dialing of a preset number to make emergency contact.

10. A kitchen fire-use unattended status timeout alarm device according to claim 9, characterized in that, The SOS communication module has a built-in SIM card with 1-3 pre-stored family contact numbers. When dialing, it calls in a preset order until the call is connected or ends after 3 calls. After the call is connected, two-way voice communication can be achieved through the microphone and speaker built into the SOS communication module.

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