Apparatus for protecting a home appliance from false activation

Abstract

Home appliances have operation switches and buttons and also sensors which can be activated by the user. It is possible that the user will cause and an undesired operation to take place by pressing a switch or activating a sensor by a certain action. This can be small children of dementing old people left alone, or any person in the household which can do things by mistake. This invention will describe an apparatus serving as an appliance accessory which can force the voltage value at the appropriate timing and time frame to be put on the appropriate control lines coming in the appliance control board thus maintaining a proper appliance operation.

Claims

1. An apparatus serving as an accessory to a home appliance with sensors and switches comprising input control lines coming from a home appliance, a sampler per control line, an MCU (Micro Controller Unit), a driver/amplifier per control line and forcing lines outputs to the appliance where the apparatus can force a desired value of voltage on each of the forcing lines thus forcing connected control lines coming out of the appliance sensors and switches to a desired value.

2. The apparatus of claim 1, wherein the said forcing is done at a specific timing for a specific time frame.

3. The apparatus of claim 2, wherein the said timing and time frame are set by the house hold members.

4. The apparatus of claim 3, where the identity of the sensors/switches to be forced and/or the timing and time frame can be set by a remote controller.

5. The apparatus of claim 3, where the identity of the sensors/switches to be forced and/or the timing and time frame can be set by using switches/buttons.

6. The apparatus of claim 2, wherein the said timing and time frame are Jewish Sabbath and holidays.

7. The apparatus of claim 1, wherein the said value of the voltage to be forced is the value sampled on the control lines at the beginning of a time frame.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a description of the full system with the appliance and the accessory apparatus.

(2) FIG. 2 is a description of the protection accessory apparatus.

DETAILED DESCRIPTION

(3) FIG. 1 is the system description. Without the new invention the control lines 16 coming out of the appliance switches and buttons 12 and sensor 13 would go directly to ADC 14 and from there to the appliance control board 19.

(4) Under the new invention, Protection accessory apparatus 11 will receive these control lines and would output forcing lines 17 with appropriate e values. They will join the control lines 16 going to the appliance control board. This will force the control lines 16 to receive the voltage values coming from the apparatus instead of the values coning from sensor/switches and the lines coming in ADC 14 will have the values coming from the apparatus 21 and not from switches 12 or sensors 13, this is during the period of time the apparatus is driving the lines.

(5) FIG. 2 shows the apparatus in details it has control lines 16 samplers, a sampler 22 per line and voltage drivers/amplifiers 23—one per line. Both are under the control of MCU 21 which is under the control of Smart phone 15 via Bluetooth. It is possible that the MCU is aware of the desired value per line and will instruct the driver to drive it. It is also possible that it is desired to maintain the status of the appliance at the beginning of the forcing operation, such that a sampling by sampler 22 will be done at the beginning of a time frame and this value will be forced on the lines. The driver/amplifier will force the voltage value by having a very low impedance/high amplification on forcing lines 17, which means that the voltage value on the control lines 16 to the ADC will be very close to that of the forcing lines. The impedance difference between the original lines and the apparatus will be big (e.g. at least 10×)

(6) The impact of a selected time frame is that sampling will be done at the beginning of it and driving line with this value though the time frame.

(7) The timing can be pre-programmed per appliance usage—e.g. Jewish Sabbath and holiday time or summer time. Or this can be a switch the mother is pressing when she leaves home. Potentially, this can be put under the control of a remote controller, which can be a smart phone with an application, any home computing device, Internet communication or any device with a wireless communication which can have an appliance control application, which will select the switches/sensors it wishes to control and under what timing and time frame.

(8) The advantage of the described invention is that the installation inside an appliance is very easy. The apparatus will have to be packaged as an accessory in the appliance or close to it with wiring to it.