JPH058867Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a pest threatening device that intimidates harmful birds and beasts approaching agricultural crops.

BACKGROUND ART Conventional pest threatening devices include explosive devices using propane gas, alarm devices that emit the sounds of birds of prey, balloons representing the eyes of birds of prey, scarecrows, and the like.

Problems that the invention aims to solve First, with balloons or scarecrows that represent the eyes of birds of prey, pests and birds will gradually get used to them, making it impossible to drive them away.

In addition, in the case of explosive devices or warning devices that emit the sounds of birds of prey, since they always emit explosion sounds and sounds of birds of prey at regular intervals, pests and birds gradually become accustomed to the sounds of explosions, etc. The intimidation effect fades. In addition, noise to neighboring houses becomes a problem, and the cost of maintaining propane gas is high for explosive devices.

Therefore, as shown in Japanese Patent Application Laid-open No. 62-220134, the sound of a harmful bird is detected and a warning sound is generated only when the sound is detected, thereby achieving a long-term threat effect. At the same time, pest prevention devices have been developed that prevent these birds from causing trouble to neighboring houses.

However, even with this type of device, if there is a voice of a harmful bird, it will generate a threatening sound.
There is a problem in that threatening sounds are generated even when there are few harmful birds or when they are simply flying, and the threatening sounds are generated unnecessarily.

Means for Solving Problems: A detection unit that detects the sounds of harmful birds and animals, a discrimination unit that discriminates the type of harmful birds and animals, an intimidation unit that intimidates harmful birds and animals, and a discrimination result in the discrimination unit. In the pest threatening device, which is comprised of a drive unit that operates the threatening unit based on the
A first oscillator that is switched off, a second oscillator that is switched on and off for a relatively long period of time set in advance, and an output from the discrimination unit and the first oscillator during the on time of the second oscillator. a counter that counts the number of times a signal is output when both are output and generates an output signal when the number reaches a predetermined number; and a counter that is activated by the output signal from this counter to generate the first and second oscillators. The drive unit was formed by a timer that stopped the operation and also drove the threat unit.

Function When a pest approaches, and the discrimination section determines that the sound of the pest detected by the detection section is that of the desired pest, the drive section activates the threatening section. This operation is performed by the first and second oscillators of the drive unit and the counter if there are a large number of pests or if they are staying in that location. The system is designed to generate a threatening sound only when the system is in use, thereby maintaining the effect of the warning sound over a long period of time, and at the same time, causing less disturbance to nearby residences.

Embodiment An embodiment of this invention will be described based on the drawings. First, a microphone 1 is provided, which is a detection unit that collects and detects the sounds of harmful birds and animals.The output side of the microphone 1 is connected to an amplifier 2, and the output side of the amplifier 2 is connected to It is connected to a band filter 3, which is a discriminator that allows signals in a frequency band of only similar sounds to pass through.

Next, a first oscillator 4 in which on time≫off time and a second oscillator 5 in which on time = off time are provided. Here, set the first oscillator's on time to 0.2 seconds and off time to 0.05 seconds,
And the on time and off time of the oscillator 5 are both 5.
Set to seconds. One output side of the first oscillator 4 and the output side of the bandpass filter 3 are NAND.
The other output side of the first oscillator 4 and the output side of the NAND circuit 6 are connected to input terminals A and B of a flip-flop circuit 7. Further, the output side of the flip-flop circuit 7 and the output side of the second oscillator 5 are connected to input terminals C and D of the counter 8. moreover,
The output side of counter 8 is connected to timer 9,
The output side of the timer 9 is connected to a driver 10, and the output side of the driver 10 is connected to an intimidation device 11 which is an intimidation section. The oscillators 4 and 5, the NAND circuit 6, the flip-flop circuit 7, the counter 8, the timer 9, and the driver 10
a drive unit 12 that drives the intimidation device 11 by
is configured.

Note that the counter 8 outputs a signal to start the timer 9 when the count number within a predetermined time reaches a predetermined number or more.

Although not shown, the microphone 1, amplifier 2, oscillators 4, 5, etc. are each connected to a power source.

In such a configuration, the frequency band of the target vocalizations of harmful birds and animals in the band filter 3 is set to 3.
An example will be explained in which the signal is set to ~5KHz and the signal that drives the timer 9 is output when the count number of the counter 8 becomes "10" or more during one ON state (5 seconds) of the oscillator 5. do.

First, harmful birds and animals arrive, and their cries and other sounds are collected by the microphone 1 and amplified by the amplifier 2. Furthermore, by band filter 3, 3
Only the sounds in the frequency band of ~5KHz are extracted, and when the sounds in this frequency band are extracted, the band filter 3 outputs an "H" level signal.

Next, the oscillators 4 and 5 start operating at the same time, and output an "H" level signal when turned on, and output a "L" level signal when turned off. . Furthermore, when the oscillator 4 is turned on and the signal from the oscillator 4 becomes "H" level, and the signal from the bandpass filter 3 becomes "H" level, the NAND circuit 6 outputs a "L" level signal. A signal is output.

Here, the input terminal A of the flip-flop circuit 7
The time that the signal to is at “H” level (0.2 seconds)
The output signal from the NAND circuit 6 is “L” even once.
When the level is reached (that is, the band filter 3 extracts a sound of 3 to 5 KHz), the output of the flip-flop circuit 7 is maintained at the "H" level and enters a count waiting state. Further, while the signal from the oscillator 5 is on (5
It performs a counting operation in seconds), and while the output signal of the oscillator 4 is at the "H" level once (0.2 seconds), the output signal of the NAND circuit 6 is at the "L" level even once. If so, the counter 8 counts "1" when the output signal of the oscillator 4 changes from "H" level to "L" level. And the count number is “10” in 5 seconds
When the above is reached, it is determined that the target pest has arrived, and the counter 8 outputs a signal to start the timer 9. A driver 10 operates for a preset time according to an output signal outputted by starting a timer 9, activates a warning device 11 to emit a warning sound, and chases away arriving pests and animals.
It should be noted that while the timer 9 is operating, the oscillators 4 and 5 are in a reset state, and restart their operation simultaneously when the timer 9 ends, that is, when the threat device 11 ends.

Note that in this embodiment, the NAND circuit 6,
The flip-flop 7 is of the R-S type,
In addition, although we used a counter 8 of the type that counts when the count operation setting input is at the "H" level and the count target signal changes from "H" to "L" level, other formats may also be used. You can. Further, the threat device 11 may be a bomb using propane gas or a device that emits the voice of a bird of prey.

Effects of the invention As described above, this invention includes a detection section that detects the sounds of harmful birds and animals, a discrimination section that discriminates the type of harmful birds and animals, an intimidation section that intimidates the harmful birds and animals, and a A pest threatening device that includes a drive unit that operates the threatening unit based on a determination result includes a first oscillator that switches on and off in a very short time, and a first oscillator that switches on and off for a relatively long time set in advance. A second oscillator is switched, and the number of times a signal is output when both the outputs of the discrimination unit and the first oscillator are output during the on time of the second oscillator is counted, and the number of times reaches a predetermined number of times. The drive unit is formed by a counter that generates an output signal when the alarm is reached, and a timer that is activated by the output signal from the counter and stops the operation of the first and second oscillators and drives the threat unit. When a pest approaches, and the discrimination section determines that the sound of the pest detected by the detection section is that of the target pest, the driving section activates the threatening section; Intimidating approaching pests and birds, this operation is performed by the first and second oscillators of the drive unit and the counter when there are a large number of pests or if they are staying in that location. This system generates only a limited number of threatening sounds, thereby maintaining the effect of the warning sound over a long period of time, and has the advantage of causing less nuisance to nearby houses.

[Brief explanation of the drawing]

The drawing is a block diagram showing one embodiment of this invention. DESCRIPTION OF SYMBOLS 1...Detection part, 3...Discrimination part, 4...First oscillator, 5...Second oscillator, 8...Counter, 9
...Timer, 11...Intimidation part, 12...Driving part.

Claims (1)

[Scope of utility model registration request] A detection unit that detects the sound of a pest, a discrimination unit that discriminates the type of the pest, a threat unit that threatens the pest, and the threat unit is activated based on the discrimination result of the discrimination unit. In a pest threatening device that consists of a drive unit, it can be turned on and off in an extremely short time.
A first oscillator that is switched off, a second oscillator that is switched on and off for a relatively long period of time set in advance, and an output from the discrimination unit and the first oscillator during the on time of the second oscillator. a counter that counts the number of times a signal is output when both are output and generates an output signal when the number reaches a predetermined number; A vermin threatening device, characterized in that the driving section is formed by a timer that stops the operation and drives the threatening section.