Patent Application
20100109887
Certain embodiments of the present invention relate to automated safety capabilities for appliances. More particularly, certain embodiments relate to safety devices for disabling appliances in response to the activation of a smoke alarm.
Gas or electric stoves and ovens and microwave ovens are found in most homes and apartments, and also in some office buildings, for example. Fires are often accidentally started by such appliances if they are left unattended. A smoke detector in the vicinity of the fire is able to detect smoke caused by the fire and activate an alarm to alert people about the fire. However, until someone arrives at the appliance to shut off the appliance after being alerted by the activated smoke detector, the appliance may continue to fuel the fire.
Further limitations and disadvantages of conventional, traditional, and proposed approaches will become apparent to one of skill in the art, through comparison of such approaches with the subject matter of the present application as set forth in the remainder of the present application with reference to the drawings.
An embodiment of the present invention comprises a method of automatically disabling an appliance. The method includes generating a signal within a smoke detector indicative of an alarm of the smoke detector being activated. The method further includes sending the signal to at least one safety device operatively coupling a source of energy to at least one appliance. The method also includes the at least one safety device automatically de-coupling the source of energy from the at least one appliance in response to the generated signal.
Another embodiment of the present invention comprises a method of automatically disabling an appliance. The method includes generating a signal within a smoke detector indicative of an alarm of the smoke detector being activated and sending the signal to a central computer. The method further includes the central computer sending a message to at least one safety device in response to the signal, wherein the at least one safety device operatively couples a source of energy to at least one appliance. The method also includes the at least one safety device automatically de-coupling the source of energy from the at least one appliance in response to the message.
In accordance with an embodiment of the present invention, the automatically de-coupling includes opening a conductive electrical path within the at least one safety device to prevent electricity from flowing to an electric burner of the at least one appliance. In accordance with an embodiment of the present invention, the automatically de-coupling includes closing a gas valve of the at least one safety device to prevent a combustible gas from flowing to a gas burner of the at least one appliance. In accordance with an embodiment of the present invention, the automatically de-coupling includes opening a conductive electrical path within the at least one safety device to prevent electricity from flowing to a microwave energy source of the at least one appliance. The method may further include manually re-coupling the source of energy to the at least one appliance via a reset button on the at least one safety device. The method may instead or in addition include automatically re-coupling the source of energy to the at least one appliance via the central computer. In accordance with certain embodiments of the present invention, the at least one appliance may include a gas stove, an electric stove, a gas oven, an electric oven, a microwave oven, a gas furnace, an electric furnace, a heat pump, an electric skillet, a hot plate, or a combination thereof, for example.
A further embodiment of the present invention comprises a system providing an automatic safety capability. The system includes at least one appliance, means for operatively coupling a source of energy to the at least one appliance, means for detecting smoke and generating a signal in response to detecting smoke, means for communicating the signal to the means for operatively coupling, and means for automatically de-coupling the source of energy from the at least one appliance in response to the generated signal.
Another embodiment of the present invention comprises a system providing an automatic safety capability. The system includes at least one appliance, means for operatively coupling a source of energy to the at least one appliance, means for detecting smoke and generating a signal in response to detecting smoke, means for receiving the signal and generating a message in response to receiving the signal, means for communicating the message to the means for operatively coupling, and means for automatically de-coupling the source of energy from the at least one appliance in response to the message.
The system may further include means for manually re-coupling the source of energy to the at least one appliance. The system may instead or in addition include means for automatically re-coupling the source of energy to the at least one appliance. In accordance with certain embodiments of the present invention, the at least one appliance may include a gas stove, an electric stove, a gas oven, an electric oven, a microwave oven, a gas furnace, an electric furnace, a heat pump, an electric skillet, a hot plate, or a combination thereof, for example.
A further embodiment of the present invention comprises an automated safety device. The automated safety device includes a two-state gas valve having a gas input port and a gas output port and capable of providing a flow state and a non-flow state. The automated safety device also includes a switch operatively connected to the two-state gas valve to change the gas valve from the flow state to the non-flow state in response to a signal. The safety device may further include a power source operatively coupled to the switch for providing electrical power used by the switch. The safety device may also include a reset device operatively connected to the switch to manually reset the switch such that the gas valve changes from the non-flow state to the flow state. The safety device may further include a communication interface and microcontroller operatively connected to the switch to receive a message from an external central computer and to provide the signal to the switch in response to the message. The safety device may also include a power source operatively connected to the communication interface and microcontroller for providing electrical power used by the communication interface and microcontroller.
Another embodiment of the present invention comprises an automated safety device. The safety device includes an electrical on/off power switch having an electrical power input port and an electrical power output port and capable of switching from a conductive state to a non-conductive state in response to a signal. The safety device may further include a power source operatively connected to the electrical on/off power switch for providing electrical power used by the electrical on/off power switch. The safety device may also include a reset device operatively connected to the electrical on/off power switch to manually reset the electrical on/off power switch back to the conductive state. The safety device may further include a communication interface and microcontroller operatively connected to the electrical on/off power switch to receive a message from an external central computer and to provide the signal to the electrical on/off power switch in response to the message. The safety device may also include a power source operatively connected to the communication interface and microcontroller for providing electrical power used by the communication interface and microcontroller.
These and other novel features of the subject matter of the present application, as well as details of illustrated embodiments thereof, will be more fully understood from the following description and drawings.
The system 100 also includes a safety device 120. The safety device 120 is operatively connected to the smoke detector 110 and the appliance 130. The safety device 120 is connected between an energy source (e.g., a combustible gas source or an electric source) and the appliance 130 in, for example, a main line 125 leading from the energy source to the appliance 130. During normal operation, the safety device 120 allows energy (e.g., natural gas or electricity) to pass from the energy source to the appliance 130. However, if the smoke detector 110 detects smoke and activates an alarm, a signal 115 is generated within the smoke detector 110 and is sent from the smoke detector 110 to the safety device 120. The safety device 120 effectively blocks the flow of energy from the energy source to the appliance 130 in response to the signal 115 from the smoke detector 110. Therefore, if the appliance 130 is the source of the detected smoke, then disabling the appliance 130 by blocking the flow of energy to the appliance 130 may help reduce or extinguish any associated fire causing the smoke.
In accordance with various embodiments of the present invention, the signal 115 may be sent from the smoke detector 110 to the safety device 120 via wired means or wirelessly. The signal 115 may be a radio frequency (RF) signal, a pulsed signal, or a simple voltage level, for example. If the signal 115 is an RF signal, the smoke detector 110 may include an RF transmitter to transmit the signal 115 and the safety device 120 may include an RF receiver to receive the signal 115. Such RF transmitters and receivers are well known in the art. In accordance with another embodiment of the present invention, the smoke detector 110 may be operatively connected to multiple safety devices 120, where each safety device 110 is operatively connected to a different appliance 130.
The first embodiment of the safety device 120 includes a two-state gas valve 210 operatively connected to a triggerable switch 220. The two-state gas valve 210 is capable of being in a first flowing state (allowing gas to pass through the valve 210) or a second non-flowing state (preventing gas from passing through the valve 210). Gas coming into the input port 211 of the safety device 120 enters the gas valve 210. Gas leaves the gas valve 210 and exits through the output port 212 of the safety device 120.
When the smoke detector 110 is activated (i.e., detects smoke), the smoke detector 110 generates a trigger pulse signal 115 that is sent to the safety device 120. The trigger pulse signal 115 from the smoke detector 110 enters the safety device via an electrical connector port 221 and causes the triggerable switch 220 to turn on or close, allowing a voltage Vvalve to be applied to an input of the two-state gas valve 210. The triggerable switch 220 is of the type that is triggered by a change (rising edge or falling edge) in a voltage logic level (e.g., the signal 115 transitioning from 0 VDC to 5 VDC). In accordance with an embodiment of the present invention, the triggerable switch includes at least one transistor. Such switches are well known in the art. The voltage Vvalve causes the two-state gas valve 210 to transition from an open (flowing) state to a closed (non-flowing) state, preventing gas from the gas supply from passing through the two-state gas valve 210 and on to the gas appliance 130.
The smoke detector 110 includes a one-shot device that is enabled by the smoke detector 110 when smoke is detected and generates the trigger pulse signal 115. Such one-shot devices are well known in the art. However, other types of devices may be used to generate the trigger pulse signal 115 as well. Furthermore, in accordance with other embodiments of the present invention, the triggerable switch 220 may be of a type that is triggered by a voltage logic level instead of a transitioning pulse (e.g., outputting 5 VDC, a logic high level). Such switches are well known in the art. In such an embodiment, the smoke detector 110 generates and outputs the voltage logic level using standard, well known digital circuitry.
In accordance with an embodiment of the present invention, the two-state gas valve 210 has an electromagnet inside which causes the gas valve 210 to close when a small charge or voltage Vvalue is applied at the electromagnet. Such gas valves are well known in the art. Other types of charge or voltage controlled gas valves may be possible as well. In accordance with an alternative embodiment of the present invention, the gas valve 210 may operate in an opposite manner. That is, the gas valve 210 may open when a small charge or voltage Vvalue is applied at the electromagnet. In such an embodiment, the voltage Vvalue would be applied to the gas valve 210 during normal operation, and when the signal 115 triggers the switch 220, the voltage Vvalue would be disconnected from the gas valve 210, causing the gas valve 210 to close.
Certain devices of the safety apparatus 120 may require electric power to be applied in order to function. For example, the triggerable switch 220 may require a voltage VDD and a ground potential GND to be applied, as shown in
In accordance with an embodiment of the present invention, the power source 230 may include one or more batteries along with other circuitry for forming the direct current (DC) voltages VDD and Vvalue with respect to a ground potential GND. In accordance with another embodiment of the present invention, the power source 230 may include a power regulator/converter that takes in alternating current (AC) from, for example, a standard 220 VAC power source or a 110 VAC power source and converts the AC voltage to DC voltages VDD and Vvalue . Such power sources are well known in the art. For example, VDD may be 5.0 VDC and Vvalue may be 1.0 VDC, in accordance with an embodiment of the present invention.
In accordance with an embodiment of the present invention, the various devices 220 and 230 may be mounted on a printed circuit board (PCB) which provides the various electrical interfaces between the devices. The PCB with the mounted devices and the two-state gas valve 210 may be mounted substantially internally to the safety device 120 (e.g., within a housing of the safety device 120). The safety device 120 also includes a reset button 240 operatively connected to the triggereable switch 220. The reset button 240 may be used to manually reset the two-state gas valve 210, via the triggerable switch 220, from the non-flowing state to the flowing state. The reset button 240 is mounted on the outside of the safety device 120 to allow user access. Such reset-able switches are well known in the art.
The second embodiment of the safety device 120 includes an electrical on/off power switch 310. The electrical on/off power switch 310 is capable of being in a first conductive state (allowing electricity to flow through the switch 310) or a second non-conductive state (preventing electricity from flowing through the switch 310). Such electrical on/off power switches or well known in the art. Electricity coming into the input port 311 of the safety device 120 enters the switch 310. Electricity leaves the switch 310 and exits through the output port 312 of the safety device 120. The electrical on/off power switch may be rated to handle, for example, 220 VAC at 30 amps.
When the smoke detector 110 is activated (i.e., detects smoke), the smoke detector 110 generates a trigger pulse signal 115 that is sent to the safety device 120. The trigger pulse signal 115 from the smoke detector 110 enters the safety device via an electrical connector port 321 and causes the electrical on/off power switch 310 to turn off or open, preventing electrical current from flowing through the switch 310 from the electric supply to the electric appliance 130. The electrical on/off power switch 310 is of the type that is triggered by a change (rising edge or falling edge) in a voltage logic level (e.g., the signal 115 transitioning from 0 VDC to 5 VDC). In accordance with an embodiment of the present invention, the electrical on/off power switch 310 includes at least one power transistor. Such switches are well known in the art. When the electric current reaches a burner, the electric current heats up a coil of the burner and, therefore, the electric burner is turned on.
The smoke detector 110 includes a one-shot device that is enabled by the smoke detector 110 when smoke is detected and generates the trigger pulse signal 115. Such one-shot devices are well known in the art. However, other types of devices may be used to generate the trigger pulse signal 115 as well. Furthermore, in accordance with other embodiments of the present invention, the electrical on/off power switch 310 may be of a type that is triggered by a voltage logic level instead of a transitioning pulse (e.g., outputting 5 VDC, a logic high level). Such switches are well known in the art. In such an embodiment, the smoke detector 110 generates and outputs the voltage logic level using standard, well known digital circuitry.
The electrical on/off power switch 310 may require electric power to be applied in order to function. For example, the switch 310 may require a voltage VDD and a ground potential GND to be applied, as shown in
In accordance with an embodiment of the present invention, the power source 320 may include one or more batteries along with other circuitry for forming the direct current (DC) voltage VDD with respect to a ground potential GND. In accordance with another embodiment of the present invention, the power source 320 may include a power regulator/converter that takes in alternating current (AC) from, for example, a standard 220 VAC power source or a 110 VAC power source and converts the AC voltage to a DC voltages VDD. Such power sources are well known in the art. For example, VDD may be 5.0 VDC, in accordance with an embodiment of the present invention.
In accordance with an embodiment of the present invention, the various devices 310 and 320 may be mounted on a printed circuit board (PCB) which provides the various electrical interfaces between the devices. The PCB with the mounted devices may be mounted substantially internally to the safety device 120 (e.g., within a housing of the safety device 120). The safety device 120 also includes a reset button 330 operatively connected to the electrical on/off power switch 310. The reset button 330 may be used to manually reset the switch 310, from the non-conductive state to the conductive state. The reset button 330 is mounted on the outside of the safety device 120 to allow user access. Such reset-able power switches are well known in the art.
The system 400 includes a central computer or controller 420 and a plurality of safety devices 440, one safety device 440 for each appliance 430. The central computer 420 may be a microprocessor based computer such as, for example, a personal computer (PC). The safety devices 440 are operatively connected between the central computer 420 and the appliances 430 via a communication network. The central computer 420 is operatively connected between the smoke detectors 410 and the safety devices 440. Each of the safety devices 440 is also connected between an energy source (e.g., a combustible gas or an electric source) and an appliance 430 in, for example, a main line 435 leading from the energy source to the appliance 430.
During normal operation, the safety devices 440 allow energy (e.g., natural gas or electricity) to pass from the energy sources to the appliances 430. However, if at least one of the smoke detectors 410 detects smoke and activates an alarm, an interrupt signal 415 is generated within the smoke detector 410 and is sent from the smoke detector 410 to the central computer 420. In accordance with an embodiment of the present invention, the signal 415 serves as an interrupt to the central computer 420. When the central computer 420 receives the signal 415, the central computer 420 generates a message 425 and sends the message to each of the safety devices 440 over a network. The safety devices 440 effectively block the flow of energy from the energy sources to the appliances 430 in response to the message 425 from the central computer 420. Therefore, if any of the appliances 430 is the source of the detected smoke, then disabling the appliances 430 by blocking the flow of energy to the appliances 430 may help reduce or extinguish any associated fire causing the smoke.
In accordance with an embodiment of the present invention, the interrupt signal 415 may be sent from the smoke detectors 410 to the central computer 420 via wired means or wirelessly. The signal 415 may be a radio frequency (RF) signal, a pulsed signal, or a simple voltage level, for example. Other types of signals are possible as well. If the signal 415 is an RF signal, the smoke detectors 410 may include an RF transmitter to transmit the signal 415 and the central computer 420 may include an RF receiver to receive the signal 415. Such RF transmitters and receivers are well known in the art.
Similarly, in accordance with an embodiment of the present invention, the message 425 may be sent from the central computer 420 to the safety devices 440 via a wired network means or a wireless network means. The message 425 may be a radio frequency (RF) computer message or a wired computer message, for example. If the message 425 is an RF computer message, the central computer 420 may include an RF transmitter network communication interface to transmit the message 425, and each of the safety devices 440 may include an RF receiver network communication interface to receive the message 425. Such RF transmitter and receiver network communication interfaces are well known in the art.
If the message 425 is communicated via wired means (e.g., electrical or optical means), the central computer 420 and each of the safety devices 440 may include an appropriate network communication interface. Such network communication interfaces may include a serial interface (e.g., universal serial bus interface, RS-232), a parallel interface (e.g., an LPT1 interface), or an Ethernet interface. Such network communication interfaces are well known in the art. Other types of communication interfaces are possible as well.
As a result, the system of
In accordance with an embodiment of the present invention, a smoke detector 410 may be correlated to one or more appliances 430. For example, a smoke detector 410 in a kitchen may be correlated to an electric stove and oven in the kitchen as well as a microwave oven in the kitchen. If the smoke detector 410 in the kitchen detects smoke and is activated, a unique interrupt signal 415 (e.g., a unique interrupt to the central computer 420), corresponding only to the kitchen smoke detector 410 may be sent to the central computer 420 from the kitchen smoke detector 410. Then, the central computer 420 may recognize the signal 425 as being from the kitchen smoke detector 410 and send a message 425 over the network to shut down only the electric stove and oven in the kitchen as well as the microwave oven in the kitchen.
Similarly, for example, a smoke detector 410 in a basement may be correlated to a gas furnace in the basement. If the smoke detector 410 in the basement detects smoke and is activated, a unique interrupt signal 415 (e.g., a different unique interrupt), corresponding only to the basement smoke detector 410 may be sent to the central computer 420 from the basement smoke detector 410. Then, the central computer 420 may recognize the signal 425 as being from the basement smoke detector 410 and send a message 425 over the network to shut down only the gas furnace in the basement. Such flexibility may be designed into the system 400 by providing unique signals 415 and messages 425 for the various combinations of correlated smoke detectors 410 and appliances 430 and the associated safety devices 440. In accordance with an embodiment of the present invention, when an appliance(s) 430 is disabled, the associated safety device 440 may send a response message back to the central computer 420 to acknowledge that the appropriate appliance(s) 430 has been disabled.
The first embodiment of the safety device 440 includes a two-state gas valve 210 operatively connected to a triggerable switch 220. The two-state gas valve 210 is capable of being in a first flowing state (allowing gas to pass through the valve 210) or a second non-flowing state (preventing gas from passing through the valve 210). Gas coming into the input port 511 of the safety device 440 enters the gas valve 210. Gas leaves the gas valve 210 and exits through the output port 512 of the safety device 440.
When a smoke detector 410 is activated (i.e., detects smoke), the smoke detector 410 generates an interrupt signal 415 that is sent to the central computer 420. The central computer 420 then generates a message 425 which is sent to the safety device 440 over a communication network. The safety device 440 includes a network communication interface and microcontroller 510 which receives the message 425 from the central computer 420 through a communication port 513. Such network communication interfaces and microcontrollers are well known in the art. The network communication interface and microcontroller 510 may include, for example, a serial interface (e.g., universal serial bus interface, RS-232), a parallel interface (e.g., an LPT1 interface), or an Ethernet interface. Such network communication interfaces are well known in the art. Other types of communication interfaces are possible as well.
When the network communication interface and microcontroller 510 within the safety device 440 receives the message 425, the network communication interface and microcontroller 510 outputs a trigger pulse signal 515 to the triggerable switch 220 and causes the triggerable switch 220 to turn on or close, allowing a voltage Vvalve to be applied to an input of the two-state gas valve 210. The triggerable switch 220 is of the type that is triggered by a change (rising edge or falling edge) in a voltage logic level (e.g., the signal 515 transitioning from 0 VDC to 5 VDC). In accordance with an embodiment of the present invention, the triggerable switch includes at least one transistor. Such switches are well known in the art. The voltage Vvalve causes the two-state gas valve 210 to transition from an open (flowing) state to a closed (non-flowing) state, preventing gas from the gas supply from passing through the two-state gas valve 210 and on to the gas appliance 130.
The network communication interface and microcontroller 510 may include a one-shot device that is enabled by the message 425 when smoke is detected by the smoke detector 410 and generates the trigger pulse signal 515. Such one-shot devices are well known in the art. However, other types of devices may be used to generate the trigger pulse signal 515 as well. Furthermore, in accordance with other embodiments of the present invention, the triggerable switch 220 may be of a type that is triggered by a voltage logic level instead of a transitioning pulse (e.g., outputting 5 VDC, a logic high level). Such switches are well known in the art. In such an embodiment, the network communication interface and microcontroller 510 generates and outputs the voltage logic level using standard, well known digital circuitry.
In accordance with an embodiment of the present invention, the two-state gas valve 210 has an electromagnet inside which causes the gas valve 210 to close when a small charge or voltage Vvalue is applied at the electromagnet. Such gas valves are well known in the art. Other types of charge or voltage controlled gas valves may be possible as well. In accordance with an alternative embodiment of the present invention, the gas valve 210 may operate in an opposite manner. That is, the gas valve 210 may open when a small charge or voltage Vvalue is applied at the electromagnet. In such an embodiment, the voltage Vvalue would be applied to the gas valve 210 during normal operation, and when the signal 515 triggers the switch 220, the voltage Vvalue would be disconnected from the gas valve 210, causing the gas valve 210 to close.
Certain devices of the safety apparatus 120 may require electric power to be applied in order to function. For example, the triggerable switch 220 and the network communication interface and microcontroller 510 may require a voltage VDD and a ground potential GND to be applied, as shown in
In accordance with an embodiment of the present invention, the power source 230 may include one or more batteries along with other circuitry for forming the direct current (DC) voltages VDD and Vvalue with respect to a ground potential GND. In accordance with another embodiment of the present invention, the power source 230 may include a power regulator/converter that takes in alternating current (AC) from, for example, a standard 220 VAC power source or a 110 VAC power source and converts the AC voltage to DC voltages VDD and Vvalue . Such power sources are well known in the art. For example, VDD may be 5.0 VDC and Vvalue may be 1.0 VDC, in accordance with an embodiment of the present invention.
In accordance with an embodiment of the present invention, the various devices 220, 230, and 510 may be mounted on a printed circuit board (PCB) which provides the various electrical interfaces between the devices. The PCB with the mounted devices and the two-state gas valve 210 may be mounted substantially internally to the safety device 440 within a housing of the safety device 440. The safety device 440 also includes a reset button 240 operatively connected to the triggereable switch 220. The reset button 240 may be used to manually reset the two-state gas valve 210, via the triggerable switch 220, from the non-flowing state to the flowing state. The reset button 240 is mounted on the outside of the safety device 440 to allow user access. Such reset-able switches are well known in the art. In accordance with an alternative embodiment of the present invention, the central computer 420 may send a reset message to the safety device 440, causing the two-state gas valve 210 to be automatically reset to the flowing state via the network communication interface and microcontroller 510 and the triggerable switch 220.
The second embodiment of the safety device 440 includes an electrical on/off power switch 310. The electrical on/off power switch 310 is capable of being in a first conductive state (allowing electricity to flow through the switch 310) or a second non-conductive state (preventing electricity from flowing through the switch 310). Such electrical on/off power switches or well known in the art. Electricity coming into the input port 611 of the safety device 440 enters the switch 310. Electricity leaves the switch 310 and exits through the output port 612 of the safety device 440. The electrical on/off power switch may be rated to handle, for example, 220 VAC at 30 amps.
When the smoke detector 410 is activated (i.e., detects smoke), the smoke detector 410 generates an interrupt signal 415 that is sent to the central computer 420. The central computer 420 then generates a message 425 which is sent to the safety device 440. The safety device 440 includes a network communication interface and microcontroller 510 which receives the message 425 from the central computer 420 through a communication port 513. Such network communication interfaces and microcontrollers are well known in the art. The network communication interface and microcontroller 510 may include, for example, a serial interface (e.g., universal serial bus interface, RS-232), a parallel interface (e.g., an LPT1 interface), or an Ethernet interface. Such network communication interfaces are well known in the art. Other types of communication interfaces are possible as well.
When the network communication interface and microcontroller 510 within the safety device 440 receives the message 425, the network communication interface and microcontroller 510 outputs a trigger pulse signal 515 to the electrical on/off power switch 310 and causes the electrical on/off power switch 310 to turn off or open, preventing electrical current from flowing through the switch 310 from the electric supply to the electric appliance 430. The electrical on/off power switch 310 is of the type that is triggered by a change (rising edge or falling edge) in a voltage logic level (e.g., the signal 115 transitioning from 0 VDC to 5 VDC). In accordance with an embodiment of the present invention, the electrical on/off power switch 310 includes at least one power transistor. Such switches are well known in the art. When the electric current reaches a burner, the electric current heats up a coil of the burner and, therefore, the electric burner is turned on.
The network communication interface and microcontroller 510 may include a one-shot device that is enabled by the message 425 when smoke is detected by the smoke detector 410 and generates the trigger pulse signal 515. Such one-shot devices are well known in the art. However, other types of devices may be used to generate the trigger pulse signal 515 as well. Furthermore, in accordance with other embodiments of the present invention, the electrical on/off power switch 310 may be of a type that is triggered by a voltage logic level instead of a transitioning pulse (e.g., outputting 5 VDC, a logic high level). Such switches are well known in the art. In such an embodiment, the network communication interface and microcontroller 510 generates and outputs the voltage logic level using standard, well known digital circuitry.
The electrical on/off power switch 310 and the communication interface and microcontroller 510 may require electric power to be applied in order to function. For example, the switch 310 and the network communication interface and microcontroller 510 may require a voltage VDD and a ground potential GND to be applied, as shown in
In accordance with an embodiment of the present invention, the power source 320 may include one or more batteries along with other circuitry for forming the direct current (DC) voltage VDD with respect to a ground potential GND. In accordance with another embodiment of the present invention, the power source 320 may include a power regulator/converter that takes in alternating current (AC) from, for example, a standard 220 VAC power source or a 110 VAC power source and converts the AC voltage to a DC voltages VDD. Such power sources are well known in the art. For example, VDD may be 5.0 VDC, in accordance with an embodiment of the present invention.
In accordance with an embodiment of the present invention, the various devices 310, 320, and 510 may be mounted on a printed circuit board (PCB) which provides the various electrical interfaces between the devices. The PCB with the mounted devices and the may be mounted substantially internally to the safety device 440 within a housing of the safety device 440. The safety device 440 also includes a reset button 330 operatively connected to the electrical on/off power switch 310. The reset button 330 may be used to manually reset the switch 310, from the non-conductive state to the conductive state. The reset button 330 is mounted on the outside of the safety device 440 to allow user access. Such reset-able power switches are well known in the art. In accordance with an alternative embodiment of the present invention, the central computer 420 may send a reset message to the safety device 440, causing the electrical on/off power switch 310 to be automatically reset to the conductive state via the network communication interface and microcontroller 510.
In accordance with an alternative embodiment of the present invention, the safety device may be integrated into the appliance, thus being an integral part of the appliance. In accordance with a further alternative embodiment of the present invention, the safety device may be integrated into an electrical outlet, thus being an integral part of the electrical outlet. The electrical outlet may be disabled via a smoke detector whether or not an electric appliance is plugged into the electrical outlet.
In summary, systems, methods, and apparatus for automatically disabling an appliance are disclosed. When a smoke detector/alarm is activated, a signal or message is sent to at least one safety device operatively coupled to at least one appliance. The appliance is disabled in response to receiving the signal or message. The systems, methods, and apparatus are based on the implicit assumption that, if a smoke detector/alarm is activated, the source of the smoke is likely due to a nearby appliance that is in use.
While the claimed subject matter of the present application has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the claimed subject matter. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the claimed subject matter without departing from its scope. Therefore, it is intended that the claimed subject matter not be limited to the particular embodiment disclosed, but that the claimed subject matter will include all embodiments falling within the scope of the appended claims.
