KR20020051589A - wireless communication system using infrared rays - Google Patents

Abstract

PURPOSE: A portable wireless communication system using infrared rays is provided to solve the risk of a wrong operation due to electromagnetic wave inductive interference by making communication achieved by wireless using infrared rays. CONSTITUTION: A portable wireless communication system consists of a radio(100), a power supply module(150), and a page phone(200). The power supply module(150) comprising a charging part(152) and a power supply part(151) supplies necessary power to the radio(100). The page phone(200) communicates with the radio(100). The radio(100) comprises a transmitting part(110) and a receiving part(120). The transmitting part(110) is comprised of a voice input part(111), a voice processing part(112), a PWM(Pulse Width Modulation) modulation part(113), an amplification part(114), and an infrared light emitting part(115). The voice input part(111) converts a voice signal inputted from a microphone(MIC) into an electrical signal. The voice processing part(112) executes amplification processing for the voice level, treble and base of the signal outputted from the voice input part(111). The PWM modulation part(113) executes pulse width modulation for the output signal of the voice processing part(112) so as to form a wireless call. The amplification part(114) amplifies the signal modulated from the PWM modulation part(113). The infrared light emitting part(115) converts the output signal of the amplification part(114) into infrared light. The receiving part(120) is comprised of an infrared light receiving part(121), an infrared light amplification part(122), a PWM demodulation part(123), a voice amplification part(124), and a voice output part(125).

Description

Portable wireless communication device using infrared light {wireless communication system using infrared rays}

The present invention relates to a portable wireless communication device using infrared rays, and more particularly, to solve the risk of malfunction due to electromagnetic wave induced obstacles and to communicate the work time and communication necessary for the maintenance and operation of the device in a place where a general radio is not available. The present invention relates to a portable wireless communication device using infrared rays to improve maintenance quality.

In general, in the case of PAGE PHONE of all factories and major facilities of the industry, research is being conducted to solve this problem because of difficulty in communication due to ambient noise.

In addition, the development of a communication device that can be used here is in progress because a separate communication device is required even where precision instruments are used, such as laboratories and laboratories.

Currently, pneumatic communication devices and wired devices are used as communication means used in power plants, hospitals, nuclear dumps, laboratories, and the like, and the user has to wear them directly. have.

In addition, the wireless communication device for solving this problem is caused by the electromagnetic wave induced obstacles to the equipment and precision measuring instruments, there is a risk of accidents due to the stop or malfunction of the device is limited in use, causing a variety of use problems.

When applied to the wired communication device of the prior art in the above, it is connected via a connection jack between workers using four communication lines (transmission 2, reception 2) to transmit and receive.

However, the wired communication device of the prior art as described above is inconvenient to work in a worn state because of the weight of the communication line, there is a problem that the installation is inconvenient.

The present invention has been devised to solve the above problems, the purpose of which is to wirelessly communicate using infrared to solve the risk of malfunction by electromagnetic wave induced obstacles, and to protect all factories and gas masks of the general industry It is possible to shorten the working time by the communication necessary for the maintenance and operation of the equipment in the equipment wearing area, and to provide a portable wireless communication device using infrared rays to solve this problem due to the difficulty of communication caused by noise.

1 is a block diagram schematically showing the configuration of a portable wireless communication device using infrared rays according to the present invention.

2 is a perspective view showing the appearance of a portable wireless communication device using infrared rays according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100, 100 ': Radio 110: Transmitter

111: voice input unit 112: voice processing unit

113: PWM modulator 114: Amplifier

115: infrared light emitting unit 120: receiving unit

121: infrared light receiving unit 122: infrared amplifying unit

123: PWM demodulator 124: voice amplifier

125: voice output unit 130: charging battery

150: power supply module 151: power supply

152: charging unit 200: driving phone

301: infrared transmitter 302: infrared receiver

303: channel selector switch 304: volume control switch

305: headphone jack 306: microphone jack

307: built-in speaker and microphone

According to a feature of the present invention for achieving the above object, in the portable wireless communication device using an infrared ray provided with a transmitter and a receiver to be used in a place where there is a possibility of malfunction of the device by electromagnetic waves,

The transmitter may include a voice input unit for converting a voice signal input through a microphone into an electrical signal, a voice processor for amplifying the signal output from the voice input unit, and pulses an output signal of the voice processor to form a wireless call. And a PWM modulator for performing width modulation, an amplifier for amplifying the signal modulated by the PWM modulator, and an infrared light emitting part for converting the output signal of the amplifier into infrared light and transmitting the infrared signal. An infrared light receiving unit for receiving infrared rays transmitted from the infrared light emitting unit of the transmitter and converting them into electrical signals, an infrared amplifying unit for amplifying the weak infrared rays received by the infrared light receiving unit, and a pulse width demodulating signal output from the infrared amplifying unit PWM demodulator for demodulating again into a voice signal, and the signal output from the PWM demodulator Provided is a portable wireless communication device using an infrared ray configured to include a voice amplification unit for amplifying the output so that the user can hear the sound, and a voice output unit for converting the electrical signal of the voice amplification unit into sound and output through the speaker.

In this case, according to an additional feature of the present invention, it is preferable that the transmitter and the receiver can be used in communication with a PAGE PHONE which is a driving phone.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

1 is a block diagram schematically showing the configuration of a portable wireless communication apparatus using infrared rays according to the present invention, and FIG. 2 is a perspective view showing an appearance of a portable wireless communication apparatus using infrared rays according to the present invention.

Referring to FIG. 1, reference numerals 100 and 100 ′ refer to radios having the same configuration and capable of communicating with each other. In addition, reference numeral 150 denotes a power supply module for supplying power required for each of the radios 100, and 200 is a driving telephone that can be used in communication with the radio 100 as a conventional wired page phone. Indicates.

In this case, the transceiver 100 includes a transmitter 110 and a receiver 120, and includes a charging battery 130, a speaker (SPK) and a microphone (MIC) separately.

The transmitting unit 110 is a voice input unit 111 for converting a voice signal input from the microphone (MIC) into an electrical signal, and amplification processing of the voice level, treble, bass, etc. of the signal output from the voice input unit 111 The voice processing unit 112 for performing the operation, the PWM modulator 113 for performing pulse width modulation to form a wireless call to the output signal of the voice processing unit 112, and the signal modulated by the PWM modulator 113 And an infrared light emitting unit 115 for converting the output signal of the amplifying unit 114 into infrared light and transmitting the amplified unit 114 to amplify the light.

In addition, the receiver 120 receives an infrared ray transmitted by the infrared light emitting unit 115 of the transmitter 110 and converts the infrared signal into an electrical signal, and the weak light received by the infrared light receiving unit 121. An infrared amplifying unit 122 for amplifying infrared rays, a PWM demodulating unit 123 for demodulating a signal output from the infrared amplifying unit 122 and demodulating it back into a voice signal, and the PWM demodulating unit 123 Voice amplification unit 124 for amplifying the output signal so that the user can hear the sound, and a voice output unit for converting the electrical signal of the voice amplification unit 124 to sound and output through the speaker (SPK) And 125.

In addition, the power supply module 150 includes a power supply unit 151 for converting an AC voltage into a DC power supply, and a charging unit 152 for supplying power required for the charging batteries 130 of the radios 100. It is configured to include.

The operation of the radio according to the present invention will be described with reference to the above configuration.

The transceiver 100 of the present invention processes the volume and tone of a voice signal input through a microphone (MIC) in the voice processing unit 112, and then the amplitude is changed by the pulse width modulation in the PWM modulator 113. The signal may be modulated by another signal, and the modulated signal is amplified by the amplifier 114 to increase the communication distance and is transmitted by the infrared light emitter 115 to high-intensity infrared light.

The infrared rays transmitted by the above operation are extracted by the highly sensitive infrared light receiving unit 121, and the weak signal is amplified by the infrared amplifying unit 122, and then pulse width demodulation is performed in the PWM demodulator 123. The signal is converted into a signal, and then amplified by the voice amplifier 124 and output as a sound through the voice output unit 125 and the speaker SPK.

2, reference numeral 301 denotes an infrared transmitter, 302 denotes an infrared receiver, 303 denotes a channel selection switch, 304 denotes a volume control switch, 305 denotes a headphone connection jack, 306 represents a microphone connection jack, and 307 represents a built-in speaker and a microphone.

The transceiver 100 having the above configuration is detachable to the power supply module 150 and is charged when attached. In the above, the infrared transmitter 301 transmits high intensity infrared rays, and the infrared receiver 302 receives infrared rays transmitted from another radio 100. The channel select switch 303 adjusts the channel with the other radio 100, and the volume control switch 304 adjusts the required volume.

In addition, the headphone connection jack 305 and the microphone connection jack 306 can be connected and used according to the equipment used, the built-in speaker and microphone 307 is used for general communication.

The radio 100 of the present invention as described above has no interference with frequency, there is no electromagnetic interference, and the radio is excellent in maneuverability. In addition, the use of a high-intensity infrared light emitting device increases the communication distance, and because it uses light rather than electromagnetic waves, there is no need for frequency interference and license.

While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

For example, as shown in FIG. 1, it may be used in connection with an existing PAGE PHONE 200.

As described above, the portable wireless communication device using the infrared light of the present invention has the effect of solving the risk of malfunction due to electromagnetic wave induced interference by using the infrared light in a place where there is a possibility of malfunction of the device due to electromagnetic waves.

In addition, medical disputes caused by harmful electromagnetic waves can be eliminated, and parts are inexpensive and power consumption is low.

In addition, the present invention can improve the inconvenience of communication due to the wire, there is an effect that can increase the communication distance by using a high brightness infrared light emitting device.

Claims (2)

In a portable wireless communication device using infrared rays comprising a transmitter and a receiver to be used in a place where there is a possibility of malfunction of the device due to electromagnetic waves or radiation, gas area, The transmitter may include a voice input unit for converting a voice signal input through a microphone into an electrical signal, a voice processor for amplifying the signal output from the voice input unit, and pulses an output signal of the voice processor to form a wireless call. A PWM modulator for performing width modulation, an amplifier for amplifying the signal modulated by the PWM modulator, and an infrared light emitting part for converting the output signal of the amplifier into infrared light and transmitting the infrared signal; The receiver includes an infrared light receiver for receiving infrared rays transmitted from the infrared light emitter of the transmitter and converting the infrared signals into electrical signals, an infrared amplifier for amplifying the weak infrared rays received from the infrared light receiver, and a signal output from the infrared amplifier. PWM demodulation unit for demodulating the pulse width demodulated again into a voice signal, a voice amplification unit for amplifying the output of the signal output from the PWM demodulator so that a user can hear the sound, and the electrical signal of the voice amplification unit as sound Portable wireless communication device using the infrared, characterized in that it comprises a voice output unit for converting and output through the speaker. The method of claim 1, The transmitter and the receiver is a portable wireless communication device using infrared rays, characterized in that can be used in conjunction with other communication devices, such as a landline page phone (PAGE PHONE) driving phone.