JP3000540B2 - Noise / distance measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise / distance measuring device suitable for use in controlling violent noise caused by street advertising activities in an urban area based on regulations.

[0002]

2. Description of the Related Art The Tokyo Metropolitan Government has enacted a violent noise ordinance in order to regulate street advertising activities caused by excessive volume by right-wing organizations and the like. According to these ordinances, when the noise level is 85 dB or more at a point 10 m away from the noise source, it is possible to make a recommendation to stop or to seize equipment such as a loudspeaker and take other measures. In this case, the noise level is measured using a portable sound level meter, and the distance to the noise source is measured using a measure.

[0003]

However, according to such a conventional violent noise control method, since the distance to the noise source is measured by a measure, it is very troublesome, time-consuming, and traffic congested. In addition to causing danger, it was also accompanied by danger. In addition, the correspondence between the noise source and the measured distance and the measured noise level was unclear, and the evidence capacity was poor. In addition, when a publicity activity is carried out while moving by car, or from a moving car, the distance to the noise source cannot be measured, and no control can be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to make it possible to cause danger even when a noise source is moving or from a moving car. It is an object of the present invention to provide a noise / distance measuring device capable of simply and quickly measuring a distance to a noise source and a noise level in a short time. It is another object of the present invention to provide a noise / distance measuring device capable of increasing the proof capacity by clarifying the correspondence between the noise source and the measured distance and the measured noise level.

[0005]

In order to achieve the above object, the present invention provides an image pickup means for capturing an object to be measured as an image and a measuring device for optically measuring a distance to the object to be measured. a distance means, a sound collecting means for collecting the placed near the sound of the distance measuring means, collected sounds by this sound collecting means
Noise level measuring means for measuring the noise level of the camera, supporting means for integrally supporting the imaging means, distance measuring means and sound collecting means as a sensor section, and controlling the attitude of the sensor section supported by the supporting means from outside. Attitude control means controlling according to the noise level, and the noise level measured by the noise level measuring means
And the distance to the object measured by the distance measuring means
Calculates the noise level in a predetermined distance based on
Noise level display means for displaying the set noise level .

[0006]

Therefore, according to the present invention, the attitude of the sensor unit is adjusted to a position where the object to be measured can be captured as an image by operating from the outside, and the distance to the object to be measured can be adjusted in a non-contact manner. It is possible to measure, and it is possible to measure the noise level near the distance measuring point of the measured distance. Also, the measured noise level and the distance
Conversion to a predetermined distance based on the distance to the object (for example,
(For example, 10 m conversion), and the noise level is calculated.
The noise level is displayed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments. FIG. 1 is a block diagram of a noise / distance measuring system including an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a camera-integrated laser distance sensor (hereinafter, referred to as a camera body);

The camera body 1 and the microphone section 2-1 are arranged as shown in FIG.
As shown in FIG. 2, the support member 3-1 is attached to the support bar 3-1 of the attitude control mechanism 3 and is disposed on the ceiling of the vehicle 100 together with the attitude control mechanism 3. The attitude control mechanism 3 includes a motor 3-2 that rotates the support bar 3-1 in the horizontal direction (left-right direction) about the axis L, and a motor 3-3 that tilts in the vertical direction (up-down direction). I have. Thereby, the microphone unit 2
-1 and the camera body 1 are integrally supported by the support bar 3-1 to form a sensor unit CE, and the attitude of the sensor unit CE can be controlled in the left-right direction and the up-down direction.

The camera body 1 includes a control section 1-1 having a CPU, a filter section 1-2, and a power supply board 1-3.
, A filter 1-4, a DC-DC converter 1-5, a video camera (CCD camera) 1-6, and a laser distance sensor 1-7 having a light emitting unit and a light receiving unit. 1, reference numeral 4 denotes a control box, 5 denotes a TV-integrated video, 6 denotes a noise recorder, and 2-2 denotes a noise meter 2.
Of the main body. The TV integrated video 5, the noise recorder 6, the noise meter 2 are connected to the control box 4, and the TV integrated video 5, the noise recorder 6, the noise meter 2,
The control box 4 is arranged inside the vehicle.

The control box 4 includes a cigar plug PL, a fuse 4-1, a main switch 4-2,
A noise filter 4-3, a DC-DC converter 4-4,
Operation lever (job stick) 4-5 for attitude control
A motor control unit 4-6, a left-right display unit 4-7 and a vertical display unit 4 forming a display unit of the current attitude of the sensor unit CE.
-8, an up / down speed switch 4-91, a left / right speed switch 4-92, and an AV board 4-
10, a liquid crystal monitor 4-11 for displaying an image captured by the video camera 1-6 on a screen, and a filter board 4-1.
2, an indicator lamp 4-13 for displaying the operation status of the camera body 1, and switches 4-14 to 4-19.

The AV board 4-10 includes a filter 4-1.
0 _1, a power supply circuit 4-10 _2, the video circuit 4-10 ₃
And an audio output circuit 4-10 ₄ . Also,
The filter board 4-12 includes filters 4-12 ₁ to 4
-12 ₃ has been constructed. FIG. 3 shows a layout of the control box 4 on the panel surface. In the figure, 4-11 ₁ and 4-11 ₂ are liquid crystal monitor 4-1
1 is an adjustment unit that can adjust brightness and contrast on the screen.

This noise / distance measuring system operates by receiving power supply from a vehicle-mounted battery (not shown). That is, when the cigar plug PL is inserted into a cigar socket of a car (not shown) and the main switch 4-2 is turned on, the power supply voltage from the on-vehicle battery is changed to the noise filter 4-.
3 to the AV board 4-10. When the power supply voltage is supplied, the AV board 4-10 supplies the power supply voltage to the liquid crystal monitor 4-11 as a voltage of ± 5 V to the liquid crystal monitor 4-11 and to the sound level meter 2 as a voltage of +5 V. The power supply voltage from the vehicle-mounted battery via the noise filter 4-3 is supplied to the motor control unit 4--4 via the DC-DC converter 4-4.
6 and directly to the TV-integrated video 5 and the noise recorder 6 as well as to the camera body 1.

In the main body 1 of the camera, upon receiving power supply from the control box 4, the control section 1-1 is started. By the activation of the control unit 1-1, the aim 4-11a (see FIG. 3) is displayed on the screen of the liquid crystal monitor 4-11, and an image captured by the video camera 1-6 is displayed. That is, the image captured by the video camera 1-6 is captured by the control unit 1-1, and the captured image is used as a video signal by the coaxial cable 1-8 and the line L1.
1 through the filter 4-12 of the control box 4
It is given to _1, provided are demultiplexed by the video circuit 4-10 ₃ to monitor 4-11. The state in which the camera main body 1 is operated by receiving power supply is illuminated and displayed by the camera indicator lamp 4-13.

Now, it is assumed that the publicity vehicle 200 should be controlled as a noise source. In this case, the attitude of the sensor unit CE is adjusted by operating the job stick 4-5, and the chamelera main body 1 is directed to the street advertising vehicle 200, and the street advertising vehicle 2
00 is captured as an image. That is, when the job stick 4-5 is operated, the operation information is transmitted to the motor control unit 4
-6. The motor control unit 4-6 generates a posture control command in accordance with operation information from the job stick 4-5, and gives the posture control command to the motors 3-2 and 3-3 as a power supply / shutoff status. Thereby, the rotation of the motors 3-2 and 3-3 is controlled, and the sensor unit CE
Are adjusted in the horizontal and vertical directions.

The current posture of the sensor unit CE is displayed on a left-right display unit 4-7 and a vertical display unit 4-8. By referring to the display states of the left-right display unit 4-7 and the up-down display unit 4-8, the operation of adjusting the attitude of the sensor unit CE by operating the job stick 4-5 becomes easy. In the present embodiment, the supply voltage to the motor control circuit 4-6 is switched by switching the vertical speed switch 4-91 and the horizontal speed switch 4-92, and the motors 3-3 and 3-2 are switched. , That is, the attitude adjustment speed of the sensor unit CE can be selected as necessary.

An image of the street advertising car 200 captured by the video camera 1-6 is displayed on the screen of the liquid crystal monitor 4-11. The sensor unit C
By further adjusting the posture of E, the LCD monitor 4
The aim 4-11a displayed on the screen -11 is adjusted to a position suitable for the distance measurement of the street advertising vehicle 200.

Thus, the control unit 1-1 sets the aim 4-1.
Using the position of 1a as a measurement target position, the distance is measured by a laser beam emitted from the distance sensor 1-7, reflected and returned, and the distance to the street advertising vehicle 200 is measured. Area -11 on the screen -11
For example, “9.3M” is displayed in b. In this case, if the measured distance is less than 10 m, a downward arrow indicating that fact is displayed in the display area 4-11b. With this arrow,
It is possible to know that the distance to the street advertising vehicle 200 is less than 10 m and does not satisfy the conditions specified in the violent noise regulations.

On the other hand, the sound collected by the microphone section 2-1 is taken into the sound level meter main body 2-2. Sound captured by the noise meter body 2-2 is provided to the audio output circuit 4-10 ₄ together with the sound volume level as an audio signal (measuring noise level). Further, the control unit 1-1 changes the measured noise level at the installation point of the microphone unit 2-1 on the screen of the liquid crystal monitor 4-11 based on the signal from the sound level meter 2 via the line L13. For example, "124.3DB" is displayed.

The control unit 1-1 sets the noise measurement range for the sound level meter 2 via the line L13 and sets the set noise measurement range on the screen of the liquid crystal monitor 4-11. For example, “4−
100DB ". At this time, when the measured noise level exceeds the noise measurement range, the control unit 1-1 displays “OVER” indicating the fact in the display area 4-11e, and the measured noise level is lower than the noise measurement range. Is displayed in the display area 4-11e.
R "is displayed. This makes it possible to know that the measured noise level is not within the noise measurement range and that an accurate noise level has not been obtained.

Note that "OVER" is displayed in the display area 4-11e.
Is displayed, the down switch 4-15 is operated and "UNDE" is displayed in the display area 4-11e.
When "R" is displayed, it is possible to switch the noise measurement range in the sound level meter 2 by operating the up switch 4-14. Also, the liquid crystal monitor 4-1
The images displayed on the switch 1 are switches 4-18 and 4-19.
By operating, it is possible to zoom up or down. The control unit 1-1 has a timekeeping function, and displays a date (year, month, day) and time in an area 4-11f on the screen of the liquid crystal monitor 4-11.
Adjustment of the display contents, that is, the date and time in the area 4-11f can be performed by operating the mode switch 4-17 and the select switch 4-16.

The control unit 1-1 calculates a noise level in 10 m conversion based on the measured distance to the street advertising vehicle 200 and the noise level measured by the sound level meter 2, and calculates the calculated noise level. Area 4 on the screen of the LCD monitor 4-11
Display at -11g. Thus, even if the distance to the street advertisement vehicle 200 is within 10 m or more than 10 m, the noise level at the 10 m point can be predicted. If it is permissible to control the violent noise based on the expected value, the control can be performed without approaching the street advertising vehicle 200, and the control can be performed while ensuring personal safety. Becomes Further, it is not necessary to maintain the distance to the street advertising vehicle 200 at 10 m, so that the control can be performed quickly.

The audio signal demultiplexed by the audio output circuit 4-10 ₄ and the video signal demultiplexed by the video circuit 4-10 ₃ are sent to the television-integrated video 5, and are sent to the liquid crystal monitor 4-10.
11 (ie, images,
Sound, measured distance, measured noise level, time, etc.) are displayed on the monitor screen of the TV-integrated video 5, and the sound collected by the microphone unit 2-1 is reproduced by the speaker of the TV-integrated video 5. . The TV-integrated video 5 records the projected contents and audio. Also, the audio output circuit 4
The -10 ₄ split sound signal is sent to the noise recorder 6, and the measured noise level is recorded on the paper. By recording the measured noise level with the noise recorder 5 (the measured distance may also be recorded at the same time), it is possible to collate with the recorded content of the TV-integrated video 5, thereby increasing the evidence capacity.

As can be seen from the above description, according to the noise / distance measuring system of this embodiment, the sensor unit is located at a position where the street advertisement car 200 can be captured as an image by operating the job stick 4-5. The posture of the CE can be adjusted, the captured image is displayed on the screen of the liquid crystal monitor 4-11, and the sighting 4-11a is set at an appropriate position, and the distance to the street publicity car 200 can be adjusted in a non-contact manner. It is possible to measure and measure the noise level in the vicinity of the distance measuring point of the measurement distance, so that the vehicle 100 equipped with the present system is moving even if the street publicity vehicle 200 is moving. However, it is possible to measure the distance to the street advertising vehicle 200 and the noise level easily and in a short time without danger and to control the violent noise.

Further, according to the noise / distance measuring system of the present embodiment, the measured distance to the street advertising car 200 and the measured noise level are displayed on the screen together with the image of the street advertising car 200, and this is integrated with the television. Since it is recorded and recorded by the video 5, the correspondence between the noise source and the measured distance and the measured noise level can be clarified, and the evidence ability can be enhanced. In the present embodiment, the control unit 1-1 is provided on the camera body 1, but it may be provided on the control box 4 side, or a personal computer or the like may be used as the control unit 1-1.

Further, in this embodiment, the cigarette plug PL is inserted into the cigarette socket of the automobile to obtain power from the onboard battery. However, if a constant voltage power supply 7 as shown in FIG. By inserting the cigar plug PL into the cigar socket insertion port 7-1 of the constant voltage power supply 7, power can be obtained from a 100 volt AC power supply. Further, in this embodiment, the noise / distance measurement system is mounted on the vehicle 100. However, if the sensor unit CE is supported together with the attitude control mechanism 3 on a tripod or the like, the noise and distance measurement system may be similarly mounted on the ground. Noise control can be performed.

[0026]

As is apparent from the above description, according to the present invention, the attitude of the sensor section is adjusted to a position where the object to be measured can be captured as an image by operating from the outside, and The distance to the object to be measured can be measured in a non-contact manner, and the noise level near the measuring point at the measured distance can be measured.
It is possible to measure the distance to the noise source and the noise level easily and in a short time without danger, even if the object to be measured is moving or from a moving car. . Also, if the measured distance to the object to be measured and the noise level are displayed on the screen together with the image of the object to be measured, this is recorded and left, so that the noise source and the measurement distance can be measured. In addition, it is possible to clarify the correspondence relationship with the measured noise level and to enhance the evidence ability. Also, the measured noise level and the distance are measured.
For example, based on the distance to the target object,
Is calculated, and the calculated noise level is
Displayed, the distance to the object is within 10m
Noise at 10m point even if it is more than 10m
The sound level can be predicted, and the predicted value
If it is permissible to take control, keep close to the object
It is also possible to carry out enforcement. In addition,
Eliminates the need to maintain a distance of 10m and speeds up enforcement
It is possible to do.

[Brief description of the drawings]

FIG. 1 is a block diagram of a noise / distance measurement system including an embodiment of the present invention.

FIG. 2 is a diagram showing an appearance of a vehicle equipped with the noise / distance measurement system.

FIG. 3 is a diagram showing a layout of a control box on a panel surface in the noise / distance measurement system.

FIG. 4 is a diagram showing a constant voltage power supply that can supply power from an AC 100 volt power supply.

[Explanation of symbols]

 Reference Signs List 1 laser distance sensor integrated with camera (camera body) 1-6 video camera 1-7 laser distance sensor 2 sound level meter 2-1 microphone section 2-2 body section 3 attitude control mechanism 3-1 support bar 3-2 motor (left and right) 3-3 Motor (for vertical direction) 4 Control box 4-5 Operation lever (job stick) 4-6 Motor control unit 4-11 LCD monitor 5 TV integrated video 100 Vehicle 200 Street advertising vehicle

Continuation of the front page (56) References JP-A-64-68181 (JP, A) JP-A-61-198880 (JP, A) JP 4-35716 (JP, B2) JP-B 5-34609 (JP , B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01H 3/00 G01H 3/10 H04N 5/765 H04N 5/781 H04R 29/00 320

Claims (1)

(57) [Claims] 1. An image pickup means for capturing an object to be measured as an image, a distance measuring means for optically measuring a distance to the object to be measured, and a sound near the position where the distance measuring means is arranged. And a noise level of the sound collected by the sound collecting means.
Noise level measuring means, supporting means for integrally supporting the imaging means, distance measuring means, and sound collecting means as a sensor section, and controlling the attitude of the sensor section supported by the supporting means in accordance with an external operation. Attitude control means, and a noise level measured by the noise level measuring means.
And the distance to the object measured by the distance measuring means
Based on this, the noise level in a predetermined distance conversion is calculated,
A noise level display device for displaying a calculated noise level .