KR20030041689A - Object sensing apparatus for portable terminal - Google Patents

Abstract

PURPOSE: An object sensor of a mobile terminal is provided to measure a distance between himself/herself and an object and allow a driver to recognize a rear distance when he drives backward. CONSTITUTION: An oscillator(21) outputs an oscillation frequency to a transmitter(22). A laser sensor of the transmitter(22) outputs a periodical output waveform. A receiver(23) receives ultrasonics wave or laser and converts it into an electric signal to output it to an amplifier(24). The amplifier amplifies the electric signal to a certain level. A comparator(25) compares the amplified electric signal with a reference signal. An output signal of the comparator(25) is latched to a flipflop(26). The signal latched to the flipflop(26) is inputted to an MSM(Mobile Station Modem)(28) through a relay unit(27). The MSM processes the received signal to a digital signal, calculates a distance from a user to an object and outputs the distance information to the relay(27). A motor/buzzer(29) receives the distance information and outputs a vibration signal or an audio signal in proportion to the distance. A counter(30) receives the distance and outputs a numerical in proportion to the distance on a display unit(31).

Description

OBJECT SENSING APPARATUS FOR PORTABLE TERMINAL}

The present invention relates to an object detecting apparatus of a portable terminal. In particular, the portable terminal is provided with a sensor capable of measuring a distance to an object to provide an object detecting service to a visually impaired person and to recognize a rear distance to a driver who reverses a vehicle. An object detection apparatus of a portable terminal.

Recently, with the remarkable development of mobile communication technology, the general public has a portable terminal and can talk to the other party anytime and anywhere.

Adding an object detection function to such a portable terminal will provide a useful object detection service for the blind or the general public.

Therefore, the present invention was devised in view of the necessity as described above, and provides an object detection service to the visually impaired by measuring the distance to an object by using an ultrasonic or laser sensor to recognize the rear distance to the driver who reverses the vehicle. It is an object of the present invention to provide an object detecting apparatus of a portable terminal.

1 is a block diagram showing the configuration of the object detection apparatus of the present invention portable terminal.

Figure 2 is an exemplary view showing a process of measuring the distance to the object using the object detecting apparatus of the present invention portable terminal.

** Description of the symbols for the main parts of the drawings **

21: oscillator 22: transmitter

23 receiver 24 amplifier

25: comparator 26: flip-flop

27: intermediary 28: MSM (Mobile Station Medem)

29: motor / buzzer 30: counter

31: display unit

The present invention for achieving the above object, and a transmitter for periodically outputting an ultrasonic wave or a laser in accordance with the oscillation frequency of the oscillator; A receiver for receiving a signal reflected by the output signal of the transmitter and returning it to an object, converting the signal into an electrical signal, and outputting the converted signal; A comparator for outputting the output signal of the receiver by comparing the signal amplified by the amplifier with a reference signal; A flip-flop for latching an output signal of the comparator; A modem chip which receives the signal latched on the flip-flop through an intermediary, processes a digital signal, calculates a distance from a target object, and outputs the distance to the intermediary; A motor / buzzer which receives the distance from the target object output from the modem chip through an intermediary and outputs a vibration signal and an audio signal having an intensity proportional thereto; It is characterized in that the counter is configured to receive a distance from the target object output from the modem chip through the intermediary to output a number to the display unit.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a configuration of an object detecting apparatus of a portable terminal according to the present invention, as shown therein; a transmitter 22 that periodically outputs ultrasonic waves or lasers according to an oscillation frequency of an oscillator 21; A receiver (23) for receiving a signal reflected by the output signal of the transmitter (22) and returning it to an object and converting the signal into an electrical signal; A comparator 25 for outputting the output signal of the receiver 23 by comparing the signal amplified by the amplifier 24 with a reference signal; A flip-flop (26) for latching an output signal of the comparator (25); An MSM (28) for receiving the signal latched on the flip-flop (26) through an intermediary (27), processing a digital signal, calculating a distance to a target object, and outputting the distance to the intermediate object; A motor / buzzer 29 which receives a distance from the target object output from the MSM 28 through an intermediary 27 and outputs a vibration signal and an audio signal having an intensity proportional thereto; The counter 30 is configured to receive the distance from the target object output from the MSM 28 through the intermediary 27 and output the numerical value to the display unit 31.

FIG. 2 is an exemplary view illustrating a process of measuring a distance to an object using an object detecting apparatus of a portable terminal according to the present invention. As shown in FIG. 2, the target object 10 is a target for measuring the distance; The distance between the target object 10 is measured by a sensor that outputs an ultrasonic wave or a laser and a sensor 22A that detects the ultrasonic wave or laser, thereby recognizing the distance measurement result to a user through an output means such as voice signal, vibration signal, and wireless data transmission. One embodiment of the present invention will be described as being configured as a portable terminal 20.

When the visually impaired person walks through the distance, the object detection function of the portable terminal 20 is to measure the distance to any object.

When the visually impaired person switches the operation mode of the portable terminal 20 to the object sensing mode by operating a key, the portable terminal 20 measures the distance to an arbitrary object through an ultrasonic wave or a laser sensor 22A, and transmits the same to the visually impaired person. Inform.

This will be described in detail as follows.

The oscillator 21 outputs an oscillation frequency set to a predetermined frequency to the transmitter 22 so that the ultrasonic wave or laser sensor 22A constituting the transmitter 22 outputs a periodic output waveform to the outside.

The ultrasonic wave or laser output to the outside is reflected by any object and received by the receiver 23.

At this time, the receiver 23 converts the received ultrasound or laser into an electrical signal and outputs it to the amplifier 24 to amplify to a predetermined level.

The electrical signal through the amplifier 24 is compared to the reference signal at the comparator 25 and the output signal of the comparator 25 is latched to the flip-flop 26.

The latched signal on the flip-flop 26 is input to the MSM 28 through the intermediary 27, and the MSM 28 receives the signal, processes the digital signal, calculates the distance to an arbitrary object, and mediates again. Output to machine 27.

The motor / buzzer 29 receives a distance to any object passed through the intermediary 27 and outputs a vibration signal or an audio signal proportional to the distance.

For example, as the distance between the portable terminal and any object increases, the strength of the vibration signal or the audio signal is increased.

The counter 30 receives a distance from any object passed through the intermediary 27 and outputs a number proportional to the distance to the display unit 31 such as an LCD.

Alternatively, the MSM 28 may transmit the distance to any object calculated through digital signal processing to the counterpart portable terminal using a wireless data transmission service.

In addition, in another embodiment, the driver backing the vehicle may use the driver to know the rear distance, and may also be used for distance measurement in an industrial site.

As described in detail above, the present invention has an effect of adding another usefulness to a portable terminal by providing an object detection service to a visually impaired or a driver by measuring a distance to an object using an ultrasonic wave or a laser sensor.

Claims (1)

A transmitter for periodically outputting ultrasonic waves or lasers according to the oscillation frequency of the oscillator; A receiver configured to receive a signal reflected by the output signal of the transmitter and return to an object, convert the signal into an electrical signal, and output the converted signal; A comparator for outputting the output signal of the receiver by comparing the signal amplified by the amplifier with a reference signal; A flip-flop for latching an output signal of the comparator; A modem chip which receives the signal latched on the flip-flop through an intermediary, processes a digital signal, calculates a distance from a target object, and outputs the distance to the intermediary; A motor / buzzer which receives the distance from the target object output from the modem chip through an intermediary and outputs a vibration signal and an audio signal having an intensity proportional thereto; And a counter configured to receive a distance from a target object output from the modem chip through an intermediary unit and output a number to the display unit.