JPH0634670B2 - Ultrasonic sound emitting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an ultrasonic sound emitting device, and more particularly to an ultrasonic sound emitting device capable of preventing damage caused by birds and the like unattended.

[Conventional technology]

Although various measures have been considered to prevent damage to birds that directly or indirectly damage humans and animals such as sparrows, crows, and pigeons, as an apparatus for preventing damage caused by such birds in an unmanned state, for example, , "Sakamako", and sprinkle the sparrows by disperse and install them in many rice fields.
In addition, providing a large number of "beat trees" that emit sounds due to the wind is also used as a method for combating sparrow destruction. Or, it is often seen that the "firecracker" is sometimes ignited and the sparrow is destroyed by a loud sound.

Also, it is a problem that pigeons make nests under the eaves of houses and scatter dung to give discomfort to the inhabitants. Some preventive measures are also implemented.

Recently, there are more and more accidents in power transmission due to crows that stop on power transmission lines, and the current situation is that various areas are suffering from various damages caused by birds.

Traditional "sakashiko" and "big eyes" appeal to the visual sense of birds, while "beat trees" and "firecrackers"
Is useful for preventing birds from approaching the place or for destroying them by appealing to the hearing of birds and giving them caution or fear.

However, none of the methods and devices are a definitive solution, and some methods may not be possible in some locations. Therefore, the advent of a universal method that can be easily installed and is effective in various places without requiring special installation conditions is desired.

[Problems to be Solved by the Invention]

It is easy to simply make an ultrasonic sound emitting device. However, there are various problems in making a bird destroyer for practical use. First of all, there is a problem with the power supply of the device. It is possible to supply power from a power line, but there is a restriction that there must be a power line nearby. It is good to install it near a house, but if it is far from the house and there is a power line that can be used far away, you have to pull the power supply with a long electric wire, which is bothersome and dangerous.
Further, when a battery is used, the maintenance cost for battery replacement is high, and even if a rechargeable secondary battery is used, it is necessary to recharge frequently.

Therefore, the present invention is to provide a novel ultrasonic sound emitting device that solves the above problems.

[Means for Solving the Problems]

An example of the ultrasonic sound emitting device of the present invention is shown in FIG. 1, in which an oscillating signal from an ultrasonic wave transmitting means (21) whose oscillation frequency is variable is transmitted through the ultrasonic sound emitting means (3). A pulse generator (21A) for generating a predetermined pulse in an ultrasonic sound emitting device which is driven and emitted by a power source means (1) having a solar battery (11) and a secondary battery (12), Frequency division counter (21B) that divides the pulse from the pulse generator (21A) into multiple ultrasonic bands over approximately 20 to 60 kilohertz.
And a multiplexer for selecting a plurality of frequency division signals from the frequency division counter (21B) at a constant frequency or a constant cycle.
(21C) the ultrasonic transmission means (21), a manual / automatic converter (22A) connected to the multiplexer, and a manual switch (22B) connected to one end of the converter (22A) ,
The frequency control means (22), which is connected to the other end of the converter (22A) and comprises a counter (22C) for counting the pulses from the pulse generator (22D), and the frequency control means (22) By controlling the multiplexer (21C) by a manual switch (22B) in the, to change the oscillation frequency from the ultrasonic transmission means (21), or the multiplexer (22D) by the control signal from the pulse generator (22D). 21C) is controlled to automatically change the oscillation frequency with time.

〔motion〕

In the above-mentioned present invention, the power supply unit (1) using the solar cell (11)
It was designed to operate without supplying power from the power line. This is because the solar cell can be charged only during the daytime, but sometimes the sound must be emitted at night when the solar cell cannot be charged. Therefore, in the present invention, the power supply unit
A timer (14) was added to (1) to add a device to save power. That is, for example, the power supply unit (1) has a built-in timer (14) that can be operated only during the daytime, or can emit sound for 10 minutes regardless of day and night and can suspend the operation for 20 minutes.

Also, the optimum ultrasonic wave frequency for destroying birds will differ depending on the type of bird, or if the sound is always emitted at the same frequency, it may be possible to reduce the destroying effect due to habituation. Therefore, the frequency of ultrasonic waves can be freely changed within a certain range. That is, firstly, the frequency can be freely changed manually, and secondly, a plurality of frequencies are automatically switched periodically to emit a sound.

〔Example〕

Prior to the description of the embodiments of the present invention, the premise of the present invention will be described.

That is, the present invention utilizes the very sensitive auditory sense of the bird to the ultrasonic waves, by driving the ultrasonic sound emitting device by the ultrasonic transmitter, diffuse ultrasonic sound from this, to the birds. On the other hand, it gives an unpleasant feeling and measures the destruction. As for the frequency of the ultrasonic waves to be emitted, the appropriate frequency varies depending on the type of bird, so the frequency should be easily variable by a simple adjuster. It is generally said that frequencies around 20 to 60 kHz are good for destroying birds. As described above, birds have extremely sensitive hearing to ultrasonic waves, which is incomparable to humans, so that even if the volume to be emitted is small, the purpose can be sufficiently achieved. I can. On the contrary, since the human ear has an extremely weak hearing ability to sense an ultrasonic wave, there is no fear of being harmed by ultrasonic sound emission.

Since the device of the present invention is often used outdoors, the power supply to the device becomes a problem. Therefore, as a power source, a solar (solar) battery that utilizes sunlight is integrated with the device, and the power is supplied while charging the secondary battery.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the circuit configuration of an embodiment of the present invention. In the figure, (1) is a power supply section, (2) is a transmission section,
(3) shows ultrasonic sound emitters, respectively. The power supply (1) is a solar cell
(11) Secondary battery (12), ON-OFF switch (13) and timer
It has (14).

The electric energy generated by the solar cell (11) that receives sunlight is stored in the secondary battery (12). The electric power stored in the secondary battery (12) is supplied to the transmitter (2) through the ON-OFF switch (13). ON / OFF of the ON-OFF switch (13) is controlled by the timer (14). Furthermore, this timer (14)
Indicates that the secondary battery (12) should be turned on for 30 minutes and turned off for 15 minutes in advance, or turned on only during the day and turned off during the night. According to the above, the on-off time is set, and the power consumption is minimized.

The transmitting unit (2) includes an ultrasonic transmitting unit (21) and its frequency control unit.
(22) and its amplification section (23). The ultrasonic transmitter (21) includes a pulse generator (21A) and a frequency divider (21A).
B) and a multiplexer (21C). The pulse generator (21A) generates a pulse having a frequency of approximately 60 kHz or more when power is supplied. The frequency dividing counter (21B) receives the high frequency pulse from the pulse generator (21A), divides the frequency, and outputs a plurality of pulses (a1), (a2), (a3) ... create. These pulses (a
1), (a2), (a3), etc. are supplied to a digital multiplexer (21C) (hereinafter referred to as a multiplexer) that functions as a data selector. The multiplexer (21C) controls, by the frequency controller (22), which frequency pulse is selected from the supplied pulses (a1), (a2), (a3) .... The frequency control unit (22) includes a manual / automatic converter (22A),
Manual switch (22B) connected to this switch and converter
It is composed of a frequency counter (22F) consisting of a counter (22C) which is switchably connected to (22A), a clock pulse generator (22D) and its regulator (22E).

When the manual / automatic converter (22A) is switched to the manual switch (22B) side, this manual switch (22B) causes the multiplexer (21C) to output pulses with different frequencies output from the frequency division counter (21B). (a1), (a2), (a3) ... Decide which one to select. A signal (b) supplied to the multiplexer (21C) from the frequency controller (22) that determines which pulse the multiplexer (21C) selects from the pulses (a1), (a2), (a3) .... Uses a digital switch as a manual switch (22B) since it must be a binary coded digital signal.

On the other hand, the pulse selected by the multiplexer (21C) can be automatically changed at a constant cycle. At this time,
Switch the manual / automatic converter (22A) to the counter (22C) side. The counting counter (22C) counts the generated clock pulses from the pulse generator (22D) in a constant cycle, and repeats sequentially generating different binary digital signals on its output side (c). When the sequentially generated signal is supplied to the multiplexer (21C) via the converter (22A), the high frequency pulse selected by the multiplexer (21C) is sequentially changed. This pulse generator (2
The period of 2D) can be set to a desired value by manually adjusting an adjuster (22E) such as a variable resistor connected to it.

Through the above operation, the multiplexer (21C) selects a pulse having a predetermined constant frequency, or automatically selects high frequency pulses (a1), (a2), (a3) ... With a constant cycle. The pulsed electric output from the multiplexer (21C) is the amplification unit.
After being sent to (23) and power-amplified, the output high frequency power is given to the sound emitting device (3), and the ultrasonic wave of the corresponding frequency is emitted from this.

The amplification section (23) is composed of a wave modulator (23A) and an amplifier (23B). The wave rectifier (23A) shapes the waveform of the high frequency pulse sent from the multiplexer (21C), for example, by using a low-pass filter, that is, the sound emitter (3) emits a sound of an appropriate tone color. The high frequency signal that can be processed by the amplifier (23B)
Send to. The amplifier (23B) is a power amplification unit for allowing the high frequency signal sent from the wave rectifier (23A) to sufficiently drive the sound generator (3). Thus, the sound emitting part (3) is an amplifier
It is driven by the signal power sent from (23B) and emits a predetermined ultrasonic wave.

2A and 2B are a perspective view and a side view showing an example in which the device according to the present invention is housed in one housing and attached to a fixed object such as a pillar. In the figure, (10) is a box-shaped housing, (20) is a pillar to which it is fixed, and (30) is a solar cell (first
(Same as the solar cell (11) in the figure), (40) is a sound emission window that emits the sound emitted by the sound generator (3), (50) is the opening door of the housing (10), (60) is the housing The fittings to the pillar (20) of (10) are shown respectively.

The opening door (50) may be opened by opening the door to open the manual / automatic converter (22A), the manual switch (22B) or the switch (22B) described in FIG. Controller (22
This is the window for operating E). Further, as the mounting metal fitting (60), an appropriate mounting metal fitting may be prepared depending on the place where the housing (10) is mounted.

Further, in order to use the device of the present invention in a wide range of places, a device with a large sound output may be used, but in this case, it is more efficient to install a large number of low output devices in a distributed manner. There is also. It is sufficient to make standard devices and disperse them according to the area to which they are adapted.

Since the device of the present invention is often used outdoors, it goes without saying that it is better to have a rainproof structure as a whole. The shape can be freely designed without being restricted by FIG. 2, and the circuit logic can be freely changed or improved without departing from the gist of the present invention with respect to the internal circuit configuration. Is a matter of ordinary skill in the art.

〔The invention's effect〕

According to the present invention described above, it is possible to provide an effective bird destroyer with a very simple structure. Since the solar cell is used, the power supply is not bothered, and the power saving circuit peculiar to the present invention allows the device to always be operated stably.

Further, since it has an adjusting mechanism capable of freely changing the frequency of ultrasonic waves, the frequency can be changed to the most effective frequency for exterminating birds. Further, it is also a great feature that it has a function of periodically changing the frequency to enhance the effect of destroying birds and the like.

Further, since the device of the present invention is small in size and can be manufactured at low cost, it is also a practical advantage that it is possible to exert a destroying effect by disposing a large number of devices even in a wide area.

[Brief description of drawings]

FIG. 1 is a systematic block diagram of an embodiment of the present invention, and FIGS. 2A and 2B are a perspective view and a side view showing an actual use state of the embodiment of the present invention housed in a housing. In the figure, (1) is a power supply section, (2) is a transmission section, (3) is an ultrasonic sound generator, (11) is a solar cell, (12) is a secondary battery, and (14) is a timer. , (21) is an ultrasonic transmitter, (22) is a frequency controller, and (23) is an amplifier.

Claims (2)

[Claims] 1. An ultrasonic wave in which an oscillating signal from an ultrasonic wave transmitting means whose oscillation frequency can be varied is driven and emitted by a power source means having a secondary battery as well as a solar cell through the ultrasonic sound emitting means. In a sound emitting device, a pulse generator that generates a predetermined pulse, a counter that divides a pulse from the pulse generator into a plurality of ultrasonic bands over approximately 20 to 60 kHz, and a constant period from the frequency division counter. The ultrasonic transmitting means comprising a multiplexer for selecting a constant frequency or a plurality of divided signals, a manual / automatic converter connected to the multiplexer, a manual switch connected to one end of the converter, Frequency control means, which is connected to the other end of the converter and includes a counter for counting the pulses from the pulse generator, A manual switch for controlling the multiplexer to change the oscillation frequency from the ultrasonic wave transmitting means, or a control signal from the pulse generator to control the multiplexer to automatically change the oscillation frequency in time. An ultrasonic sound emitting device characterized in that 2. An ultrasonic wave in which an oscillating signal from an ultrasonic wave transmitting means whose oscillation frequency can be varied is driven and emitted by a power source means having a secondary battery as well as a solar cell through the ultrasonic sound emitting means. In the sound emitting device, a switch means provided between the secondary battery of the power source means and the ultrasonic wave oscillating means is turned on / off by a timer provided in the power source means. Ultrasonic sound emitting device.