Abstract: A laser rangefinder and a method for implementing the same are provided. When the distance is measured, a number of laser signals are emitted from an emitting unit to an object to be measured. A receiving unit receives the laser signals reflected by the measured object and converts them into an electrical pulse signal. A time measuring unit converts a trigger signal of a laser emitter and the electric pulse signal converted by the laser receiver into a rectangular gate signal. The width of the rectangular gate signal is measured by a pulse counter unit with high precision.

Abstract: A laser rangefinder and a method for implementing the same are provided. When the distance is measured, a number of laser signals are emitted from an emitting unit to an object to be measured. A receiving unit receives the laser signals reflected by the measured object and converts them into an electrical pulse signal. A time measuring unit converts a trigger signal of a laser emitter and the electric pulse signal converted by the laser receiver into a rectangular gate signal. The width of the rectangular gate signal is measured by a pulse counter unit with high precision.

Abstract: A method for indicating and alarming about wet level of a diaper involves using a humidity sensor to perform relative humidity detection on the diaper, when the detected relative humidity is below 50% rh˜60% rh, showing the diaper's wet level as 0% rh, and when the detected relative humidity is 85% rh˜95% rh or more, showing the diaper's wet level as 100% rh, wherein functional conversion is performed to convert the relative humidity ranging between 60% rh and 85% rh˜95% rh proportionally into the diaper's wet level between 0% rh and 100% rh.

Abstract: A laser rangefinder and a method for implementing the same are provided. When the distance is measured, a number of laser pulses are emitted from a transmitting unit to an object to be measured. A receiving unit receives the laser pulses reflected by the measured object and converts them into an electrical pulse signal. A time measuring unit converts a control signal of a laser emitting module and the electric pulse signal converted by the laser receiving module into a rectangular gate signal. The width of the rectangular gate signal is measured by a pulse counter unit with high precision.

Abstract: A method for indicating and alarming about wet level of a diaper involves using a humidity sensor to perform relative humidity detection on the diaper, when the detected relative humidity is below 50% rh˜60% rh, showing the diaper's wet level as 0% rh, and when the detected relative humidity is 85% rh˜95% rh or more, showing the diaper's wet level as 100% rh, wherein functional conversion is performed to convert the relative humidity ranging between 60% rh and 85% rh˜95% rh proportionally into the diaper's wet level between 0% rh and 100% rh.

Abstract: A method for detecting an infant's urination includes: determining that Condition 1 is satisfied if a relative humidity value collected lastly is greater than humidity values of previous N times and is 1% rh˜3% rh greater than a minimum of the previous N times; determining that Condition 2 is satisfied and the first urination has happened if humidity values collected in continuous M times satisfy Condition 1, and the humidity value collected in the Mth time is 3% rh˜6% rh greater than a minimum of the previous N+M times; starting to detect a second urination when humidity variation becomes steady; and determining that the second urination has happened if a time for humidity to increase 0.1% rh is less than a half of a previous time for humidity to increase 0.1% rh, and a next time for humidity to increase 0.1% rh is also less than a half of the previous time.

Abstract: A retaining device for retaining a small-sized detective sensor includes a flexible rubber body. The flexible rubber body includes a first retaining portion, a first connecting portion, a main body portion, a second connecting portion, and a second retaining portion which are connected in sequence. An inner side of the first retaining portion and an inner side of the second retaining portion are provided with primary Velcro retaining straps. An inner side of the main body portion is formed with a recess for installing the small-sized detective sensor.