Abstract: A method for preventing children from being left in a car and a device thereof. The method comprises testing a <starting signal>, a <trip ending signal> and driver judges if have children, send these information to a controlling device, if have children in car then the controlling device sends a action order to preventing device to take action to prevent the children being left in the car. A driver alarm for preventing children from being left in a car includes a power device, car startup measuring device, inquiring device, trip ending measuring device, preventing device and controlling device.

Abstract: A driver alarm for preventing children from being left in a car comprises a power device, a voltage measuring device, an inputting device, a prompting device and a controlling device. The power apparatus has a plug, which can be inserted into a cigarette-lighter socket in the car to become a power source for the driver alarm. The voltage measuring device is used to measure voltage of the cigarette-lighter in the car, the voltage rises when the car is started up and the voltage declines when the engine is turned off. The voltage measuring device reports to the controlling device about voltage rising or voltage declining. The inputting device is designed for a driver to report to the controlling device about whether children are in the cars or not. The promoting device is used to warn driver that there are children inside of the car when the car are started up or when the engines are turned off.

Abstract: A method of having a bath in a narrow and small shower room: making a portable bathtub, put the portable bathtub into the shower room, enter into the portable bathtub, opening shower head to have a shower and to save water in the portable bathtub good enough to have a bath; while finishing a bath. A portable bathtub used in a shower room comprises a soft waterproof bath-bag, and a (foldable?) stand for supporting the bath-bag. A second embodiment comprises a soft water proof bath-bag, and a spiral spring which is wrapped on the outer layer of said soft waterproof bath-bag, and is attached to the outer layer. A third embodiment comprises a wall having a inner layer and outer layer, a bottom and a supporting device consists of a valve and an aerator; by filing air, a bathtub is formed under a shower header. A fourth embodiment is a tub which is composed by wood or plastic material. A fifth embodiment is a soft water proof bath-bag and its inner face has two float-rings on middle and opening position.