JPH10200467A - Alarm system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively issue an alarm in voice for the user of a portable telephone in a use prohibited zone by detecting the strength of radio wave received by an antenna, comparing it with a reference value and generating sounds for alarm. SOLUTION: When an antenna 1 and a speaker 10 are installed in a hospital and the portable telephone is used in the hospital, for example, its transmitted radio wave is received by the antenna 1. Only the radio wave passed through a band-pass filter 3 inside a receiver 2 is converted to an IF frequency by a mixer circuit 4 and converted into a signal voltage proportional to the electric field strength of received radio wave by a detector 6. At a controller 7, this voltage is compared with a prescribed voltage Vi set to a comparator 8. When it is judged the radio wave received by the antenna 1 has strength higher than a fixed level, a voice generating circuit 9 is operated by the output of a comparator 8 and the prescribed voice is synthesized and announced through the speaker 10 inside the hospital as a voice for alarm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm device for recognizing the use of a portable telephone or the like and issuing a warning to stop the use of the device in order to prevent radio interference and prevent malfunction of electronic equipment.

[0002]

2. Description of the Related Art In recent years, portable telephones have become smaller and lighter and have been widely used by many people. Along with this, in order not to cause radio interference to precision electronic devices, their use is often restricted.

For example, in a hospital or the like, it is necessary to effectively issue a warning to a user of a mobile phone in order to prevent a radio wave from being transmitted to a medical electronic device due to radio waves transmitted from the mobile phone or radiant noise. . In particular, in hospitals, many medical electronic devices such as patient monitoring devices (for example, ICUs) are installed and used at all times, and if a malfunction actually occurs, it also affects human life. It is necessary to issue warnings reliably and accurately.

[0004]

However, in order to surely prevent accidents due to radio wave interference of medical electronic equipment, a warning is simply posted to prohibit the use of mobile phones, and only the common sense of the user is left. I can't just leave it to you. In addition, it is not preferable to frequently emit a sound and warn in a hospital or the like. As described above, one piece of warning sentence or continuous voice announcement has a problem as a warning method for a mobile phone holder.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide an alarm device that warns a user of a portable telephone to effectively stop using the same by voice. To provide.

[0006]

An alarm device according to the present invention is an alarm device for recognizing the use of a portable telephone or the like and issuing a warning of stopping the use thereof, comprising an antenna and an intensity of a radio wave received by the antenna. And voice synthesizing means for generating a warning sound by comparing the detected radio wave intensity with a reference value.

[0007] A speaker for warning the user of the portable telephone or the like of stopping the use may be connected to the voice synthesizing means.

A plurality of speakers may be connected to the voice synthesizing means, and each speaker may be arranged at a plurality of locations.

A plurality of antennas may be connected to the detection means, and each antenna may be arranged at a plurality of locations.

According to one of the plurality of antennas, a switching means may be provided for connecting only a speaker arranged in the vicinity of the antenna to the voice synthesizing means in accordance with which radio wave is received.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of the present invention will be described.

Embodiment 1 FIG. 1 is a block diagram of an alarm device according to Embodiment 1 of the present invention. In the figure, 1 is an antenna, and 2 is a receiver connected to the antenna 1. The receiver 2 includes a band-pass filter 3, a mixer circuit 4, a local oscillator 5, and a band-pass filter 3 that pass only radio waves in a frequency band that is an obstacle among radio waves received by the antenna 1.
And a detector 6.

Reference numeral 7 denotes a controller connected to the receiver 2, and reference numeral 10 denotes a speaker. The controller 7 has a comparator 8 having a reference value and a sound generation circuit 9. A predetermined voltage (V _i ) is applied to the inverting input terminal (−) of the comparator 8, and the non-inverting input terminal (+) is connected to the detector 6. The sound generation circuit 9 is turned on and off by an output signal of the comparator 8, and the sound generation circuit 9 is connected to the speaker 10.

Next, the operation when such an alarm device is installed in a hospital will be described.

When a mobile phone is used in a hospital where the antenna 1 and the speaker 10 are installed in the hospital, the antenna 1 receives the transmitted radio wave. In the receiver 2, only radio waves in a frequency band set in advance by the band-pass filter 3 are output to the mixer circuit 4. And
The received frequency is reduced to an intermediate frequency by the mixer circuit 4 and the local oscillator 5, and is converted by the detector 6 into a voltage signal proportional to the electric field strength of the received radio wave.

When the intensity of the radio wave is detected by the receiver 2, it is converted into a voltage signal and output to the controller 7. The controller 7 compares the predetermined voltage (Vi) set in the comparator 8 with the voltage signal, and determines whether the radio wave received by the antenna 1 has a certain strength or more. When it is determined that the intensity is equal to or higher than a certain level, the sound generation circuit 9 is operated by the output from the comparator 8 and a predetermined sound is synthesized. Will flow inside.

[0017] A possible to change the voltage value V _i that is set in the comparator 8, by changing the value in accordance with the arrangement or the like of the installation location and medical electronic equipment of the antenna 1, in the alarm device The sensitivity to the input electric field strength can be switched.

Incidentally, even if there is only one antenna, if a plurality of speakers 22 and 23 are connected to the sound generation circuit 9,
Even if the volume of a warning from each speaker is low, a warning can be issued for use of the mobile phone in a wide range. The speaker 10 can be connected to an existing speaker in a hospital.

As described above, when a portable telephone is used, the radio wave intensity can be detected and a voice warning can be issued immediately to stop using the portable telephone. This is useful for preventing accidents due to radio wave interference.

Embodiment 2 FIG. 2 is a block diagram of an alarm device according to Embodiment 2 of the present invention. In the figure, 11 and 12 are antennas, and 13 and 14 are receivers connected to the antennas 11 and 12, respectively. Each of the receivers 13 and 14 is configured in the same manner as the receiver 2 of the first embodiment, and corresponding portions are denoted by the same reference numerals.

Reference numeral 15 denotes a controller connected to the receivers 13 and 14, and reference numerals 22 and 23 denote speakers. The features of the alarm device according to the second embodiment are different from those of the first embodiment in that two antennas 11 and 12 and two speakers 2 are used.
2 and 23. For example, two places in a hospital can issue a warning about the use of a mobile phone.

The controller 15 has comparators 16 and 18 having reference values and an audio generating circuit 20, and further has comparators 17 and 16 for comparing the magnitudes of output signals of the receivers 13 and 14. An OR circuit 19 for inputting an output signal of 18 to an audio generation circuit 20 and a switch circuit 21 for switching the audio generation circuit 20 to either the speaker 22 or the speaker 23 by an output signal of the comparator 17. It also has.

Next, the operation when such an alarm device is installed in a hospital will be described.

In a large-scale hospital where medical electronic devices are arranged at a plurality of locations in a hospital, a plurality of antennas 11 and 12 and a plurality of speakers 22 and 23 as shown in FIG.
Are preferred. Now, it is assumed that the antenna 11 and the speaker 22 are provided in the area A, and the antenna 12 and the speaker 23 are provided in the area B.

When a mobile phone is used in the area A in the hospital, the transmitted radio wave is received by the antenna 11 and the area B is used.
When the mobile phone is used, the transmitted radio wave is received by the antenna 12. If no radio waves are generated in any of the areas A and B, or if the antennas 11 and 12 receive only radio waves with weak electric field strength, the voltage signal from each of the receivers 13 and 14 is output. since does not reach the set voltage value V _i, the comparator 16, 18 of the controller 15 is turned off (LOW voltage), the sound generating circuit 20 does not operate.

When a mobile phone is used only in the area A in the hospital, the transmitted radio wave is received by the antenna 11 and converted into a predetermined voltage signal via the receiver 13, which is set in the comparator 16. If the voltage value V _i has been reached,
Turns on the sound generation circuit 20 via the OR circuit 19 (HIG
H voltage) signal is sent. Since no voltage signal is output from the receiver 14 to the controller 15, only the signal from the receiver 13 is input to the comparator 17, whereby a signal (HIGH) for switching the switch circuit 21 to the terminal 21 a is output. Is done. Therefore, the sound generation circuit 20 operates by the output from the comparator 16, and the sound generation circuit 20 is connected to the speaker 22 by the switch circuit 21. Will flow to

Similarly, when the portable telephone is used only in the area B, a voice alert is issued only from the speaker 23 to the area B in the hospital.

Moreover, both the area A, in B, the antenna 11, 12 receives a radio wave of the cellular phone, they are detected as a voltage signal to reach a set voltage value V _i to the comparator 16 both In such a case, an audio warning is played in any of the previously detected areas, and the warning is sequentially continued until the use is stopped.

It should be noted that a plurality of speakers 2 can be connected without a switch circuit 21 for switching the output of the sound generation circuit 20.
2 and 23, a warning by sound may be generated at the same time. Although it is possible to provide two or more speakers and two or more antennas according to the size of the hospital, it is also possible to provide only a plurality of antennas 11 and 12 and only one speaker.

As described above, even if the antenna and the receiver are installed at a plurality of locations, only one means for generating a sound for warning is provided. Even when the mobile phone is used, the intensity of the radio wave can be detected and a warning can be issued by voice so as to appropriately stop using the mobile phone. Therefore, there is an effect that an unnecessary voice warning is eliminated and unnecessary noise is not generated.

[0031]

Since the present invention is configured as described above, it is possible to provide an alarm device that warns a user of a portable telephone to effectively stop using it by voice.

[Brief description of the drawings]

FIG. 1 is a block diagram of an alarm device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of an alarm device according to a second embodiment of the present invention.

[Explanation of symbols]

1,11,12 Antenna, 2,13,14 Receiver, 7,15 Controller, 8,16-18 Comparator, 9,20 Sound Generation Circuit, 10,22,23
Speaker.

Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI // H04M 1/66 H04B 7/26 109T

Claims (5)

[Claims] 1. An alarm device for recognizing use of a mobile phone or the like and issuing a warning of stoppage of use, comprising: an antenna; detection means for detecting the intensity of a radio wave received by the antenna; A voice synthesizing means for generating a warning voice by comparing the intensity of the warning with a reference value. 2. The alarm device according to claim 1, wherein a speaker for warning a user of the portable telephone or the like of stopping use thereof is connected to the voice synthesizing means. 3. The alarm device according to claim 2, wherein a plurality of speakers are connected to said voice synthesizing means, and each speaker is arranged at a plurality of positions. 4. The alarm device according to claim 3, wherein a plurality of antennas are connected to the detection means, and each antenna is arranged at a plurality of locations. 5. A switching means for connecting only a speaker arranged near the antenna to the voice synthesizing means according to which of the plurality of antennas has received a radio wave. Item 5. The alarm device according to Item 4.