Abstract: An optical body height measurement instrument is provided comprising: a lens configured to be movable along a direction parallel to the height of an object to be measured and form an image of the object; a photosensitive sensor arranged at an image side of the lens to sense the image; and a driving device configured to drive the lens along a direction parallel to the height of the object, wherein when the lens is moved across the height at which the head of the object is located, a hop occurs to an output of the photosensitive sensor; and wherein the height of the object is determined based on the height of the lens measured at the time of the occurrence of the hop. The optical body height measurement instrument can rapidly, conveniently and accurately measure the height based on the infrared rays emitted from the measured object or the light with a predetermined wavelength emitted from an auxiliary light source so long as the person to be measured stands within a certain region.

Abstract: A body height measuring apparatus is disclosed comprising a measuring bar, a ground mainframe, an ultrasound signal transmit unit and an ultrasound signal receive unit, a synchronous signal transmit unit and a synchronous signal receive unit. The first operational control unit and a second operational control unit synchronize the operation of the ultrasound signal transmit unit and the ultrasound signal receive unit through manipulation of the synchronous signal transmit unit and the synchronous signal receive unit, and calculate a height based on a transmission time during which an ultrasound signal travels from the ultrasound signal transmit unit to the ultrasound signal receive unit. As the body height is measured based on a unidirectional transmission of the ultrasound signal, the measurement error is reduced, the measuring accuracy is improved and an advantage in use is achieved.

Abstract: An optical body height measurement instrument is provided comprising: a lens configured to be movable along a direction parallel to the height of an object to be measured and form an image of the object; a photosensitive sensor arranged at an image side of the lens to sense the image; and a driving device configured to drive the lens along a direction parallel to the height of the object, wherein when the lens is moved across the height at which the head of the object is located, a hop occurs to an output of the photosensitive sensor; and wherein the height of the object is determined based on the height of the lens measured at the time of the occurrence of the hop. The optical body height measurement instrument can rapidly, conveniently and accurately measure the height based on the infrared rays emitted from the measured object or the light with a predetermined wavelength emitted from an auxiliary light source so long as the person to be measured stands within a certain region.