JP2017112840A - Animal repellent device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an animal repellent action from decreasing by varying a frequency of sound waves and an emission time of sounds.SOLUTION: An animal repellent device includes control means 30 that outputs a sound wave control signal of a randomly varying frequency when receiving an animal detection signal or when a scheduled time has come at a time interval as a downtime, sound wave transmitter 40 that transmits sound waves on the basis of the sound wave control signal outputted from the control means 30, and sound emission means 50 that emits sounds on the basis of a sound wave signals outputted from the sound wave transmitter 40. The control means 30 has a function of randomly selecting a downtime from a range of 1 to 3 sec, a function of repeatedly outputting the sound wave control signal only in a period of 0.5 to 1.5 sec at an interval of the downtime, and a function of randomly varying the frequency at an interval of a period selected from a range of 0.5 to 2 msec. The frequency to be outputted by the control means 30 randomly varies within a range of 1 to 50 kHz.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an animal repellent device that is used to expel animals by emitting sound.

  Conventionally, various repelling devices or repelling systems are known as countermeasures against birds and animals. For example, those that use loud sounds such as explosive sounds and distress calls, those that generate sounds that birds and beasts dislike, those that use ultrasonic waves, those that actually skip objects like rocket fireworks, etc. Are known. By using these evasion systems, driving away bird strikes at airports and birds caught in wind power generators can also help protect animals by avoiding them and avoiding damage. It is.

  As a preceding example, a harmful beast that has entered a predetermined area, such as a wild boar, can be caused to escape from the area by irradiating ultrasonic waves having a frequency of 20 to 32 kHz and a sound pressure level of 70 dB or more. Beast threat devices have been proposed (see, for example, Patent Document 1). This Patent Document 1 also mentions intermittent emission of ultrasonic waves.

JP 2015-112098 A

  However, the above-described conventional apparatus or system has a problem that the repelling action is quickly reduced by the habituation based on the learning ability of the animal. There was a similar problem with the pest threatening device according to the preceding example.

  The present invention has been made in view of the above situation, and is based on the concept of emitting sound and driving away animals from a certain place or approaching a certain place. By taking measures such as randomly changing the frequency or emission time of the sound, it is difficult to cause a situation where the animal becomes accustomed to the sound and the repelling effect is reduced. It is an object to provide an animal repellent device that makes possible. It should be noted that the animals to which the animal repellent device according to the present invention is to be used include not only four-legged animals but also birds and large or small fish.

  The present invention is an animal repellent device for repelling an animal by emitting sound, the control means for outputting a sound wave control signal of a frequency that changes randomly, and the sound wave control output from the control means A sound wave transmitter that emits a sound wave based on the signal; and a sound emitting unit that emits a sound based on the sound wave signal output from the sound wave transmitter. According to the present invention, the level of the sound emitted from the sound emitting means changes randomly. For this reason, it is easy for an animal to avoid a situation where it is difficult to learn how to hear the sound, and the animal becomes accustomed to the sound and the repelling action is reduced.

  In the present invention, the control means has a function of outputting a sound wave control signal of a frequency that randomly changes within a time during which the detector that detects the presence of the animal outputs the detection signal, and at random. You may have a function which outputs the sound wave control signal of the frequency which changes for every time interval as an idle time controlled by a time controller. According to this invention, when the detector detects the presence of an animal, the control means intermittently repeatedly outputs a sound wave control signal with a pause time controlled by the time controller, and based on the sound wave control signal. A sound wave transmitter outputs a sound wave signal. The sound emitting means emits sound based on the sound wave signal. Moreover, because the frequency of the sound wave control signal changes randomly (randomly), it creates a situation that is difficult for animals to learn about the level of sound, etc. The situation of end is avoided.

  In the present invention, the control means has a function of outputting a sound wave control signal of a frequency that randomly changes in response to the activation signal of the time controller that outputs the activation signal at a scheduled time, and at random. It may have a function of outputting a sound wave control signal having a changing frequency for each time interval as a pause time controlled by the time controller. According to the present invention, when the time controller outputs the start signal at the scheduled time, the control means that receives the start signal intermittently repeatedly outputs the sound wave control signal with the pause time controlled by the time controller. The sound wave transmitter outputs a sound wave signal based on the sound wave control signal. The sound emitting means emits sound based on the sound wave signal. Moreover, because the frequency of the sound wave control signal changes randomly (randomly), it creates a situation that is difficult for animals to learn about the level of sound, etc. The situation of end is avoided.

  In order to create a situation where learning is difficult with respect to the pitch of the sound and the timing at which the sound is heard as described above and to avoid the reduction of the repelling action, the control means in particular makes the pause time randomly from a range of 1 to 3 seconds. It is desirable to have a function to select. If the pause time when the sound wave control signal is not output is too short or too long, it may be difficult to create a situation difficult for the animal to learn, so the pause time is randomly selected from a range of 1 to 3 seconds. It is desirable.

  Further, it is desirable that the control means has a function of repeatedly outputting the sound wave control signal having a frequency that randomly changes within a period of 0.5 to 1.5 seconds with the pause time. If the time for the control means to repeatedly output the sound wave control signal is too short or too long, it will be difficult to create a situation difficult for the animal to learn, so the output time is in the range of 0.5 to 1.5 sec. It is desirable to choose at random.

  In the present invention, the control means preferably has a function of randomly changing the frequency for each time selected in a range of 0.5 to 2 msec. In the time zone in which the control means continuously outputs the sound wave control signal, it has a function of randomly changing the frequency for each time selected in a very short range of 0.5 to 2 msec. Since the pitch of the sound changes frequently within a very short time, a situation that is difficult for an animal to learn is remarkably created.

  In the present invention, it is desirable that the frequency output by the control means is randomly changed within a range of 1 to 50 kHz. A sound with a frequency of 1 to 50 kHz is a considerably high-frequency sound, and is effective in driving away animals.

  In the present invention, it is desirable that the frequency output by the control means is randomly changed within a range of 2 to 12 kHz. Sounds with a frequency of 2-12 kHz have been found to be particularly useful in driving away birds.

  In the present invention, the sound emitting means includes an audio output means for converting the sound wave signal output from the control means into an audio signal and amplifying it, and a speaker connected to the audio output means for emitting sound. It is desirable. When the sound is emitted by the sound emitting means in this way, it is easy to increase the threatening action on the animal by changing the volume of the sound, which helps to improve the action of driving away the animal.

  In the present invention, it is desirable that the sound wave transmitter has a function of outputting a sound wave signal having a pulse waveform. In the present invention, it is desirable that the sound wave generator has a function of generating an overshoot or undershoot pulse waveform. In terms of increased threat to animals, the sound of the pulse waveform is superior to the sound of the continuous waveform, and the sound of the overshoot or undershoot pulse waveform is superior to the sound of the simple pulse waveform. Has been shown to be more effective.

  As described above, according to the animal repellent device according to the present invention, it is difficult for an animal to get used to the sound and the repellent effect is reduced, so that the high repellent effect is maintained over a long period of time. It will be possible to exert, and it will be easier to obtain a permanent repellent effect. In addition, the effect of threatening the animal can be enhanced by changing the sound frequency or modulating the pulse waveform to overshoot or undershoot.

(A) And (B) is a schematic block diagram of the animal repelling apparatus which concerns on different embodiment of this invention. It is explanatory drawing which showed the range of the frequency of the sound wave control signal output by a control means. It is explanatory drawing which illustrated the pattern of the intermittent output control by the time controller of a control means. It is explanatory drawing which illustrated the frequency and waveform of the sound wave signal output for every time selected in the range of 0.5-2 msec within sound emission time t0-tn. It is explanatory drawing which illustrated the frequency and waveform of the sound wave signal output for every time selected in the range of 2 msec within sound wave emission time t0-t1. It is explanatory drawing which illustrated the frequency and waveform of the sound wave signal output for every time selected in the range of 2 msec within sound wave emission time t2-t3. It is explanatory drawing which illustrated the pulse waveform which carried out overshoot or undershoot.

  1A and 1B are schematic configuration diagrams of an animal repelling apparatus according to different embodiments of the present invention. FIG. 2 is an explanatory diagram showing the frequency range of the sound wave control signal output by the control means 30, and FIG. 3 is an explanatory diagram illustrating an intermittent output control pattern by the time controller 32 of the control means 30. Further, FIG. 4 is an explanatory diagram illustrating the frequency and waveform of a sound wave signal output every time selected within a range of 0.5 to 2 msec within the sound emission time t0 to tn, and FIG. 5 is a sound wave emission time t0. FIG. 6 is an explanatory diagram illustrating the frequency and waveform of a sound wave signal output every time selected within a range of 2 msec within t1, FIG. 6 shows every time selected within a range of 2 msec within a sound wave emission time t2 to t3 FIG. 7 is an explanatory diagram illustrating the overshoot or undershoot pulse waveform.

  The power supply P of the animal repellent device schematically shown in FIG. 1 (A) may be a portable battery such as a dry battery or a commercial power supply. The power output from the power supply P is detected by the detector 10. And the time controller 20, the control means 30, the sound wave transmitter 40, the sound emission means 50, and the like.

  The detector 10 may employ a general animal detection sensor such as an infrared sensor. When the animal enters the detection area, the presence of the animal is detected and the detection signal is output. The animals include wild animals such as wild boar and deer classified as quadruped vertebrates, molluscs such as snakes, birds such as crows and pigeons, and large fish such as sharks and dolphins and small fish such as sardines. Other medium-sized fish are also included. A detection signal output when the detector 10 detects the presence of an animal is input to the control means 30.

  The control means 30 has a function of outputting a sound wave control signal having a frequency that randomly changes within the time when the detector 10 detects the presence of an animal and outputs the detection signal, and this function is frequency control. Exerted by the vessel 31.

  The frequency controller 31 is an element that controls the frequency of the sound wave control signal. As shown in FIG. 2, the function of the frequency controller 31 allows the frequency of the sound wave control signal to be random within a range of 1 to 50 kHz. Can be set to a value that changes. A sound with a frequency of 1 to 50 kHz is a considerably high-frequency sound, and a sound that randomly changes within the range is considered to be a clearly effective band for driving away animals. If the frequency is lower than 1 kHz, the sound is in the middle or low range, diminishing the effect of driving off the animal, and the animal is said to be accustomed to sound. When the frequency exceeds 50 kHz, the highest sound range is reached, and there is a concern that it may be outside the audible range of the animal. When the object to be avoided is a bird, the frequency of the sound wave control signal can be set to a value that randomly changes within the range of 2 to 12 kHz. A sound having a frequency of 2 to 12 kHz is a considerably high-frequency sound, and a sound that randomly changes within the range is a clearly effective band for driving away birds. Further, the frequency controller 31 has a function of randomly changing the frequency of the sound wave signal for each time selected in a range of 0.5 to 2 msec within the output time of the sound wave control signal. .

  The sound wave control signal output by the frequency controller 31 is output at each time interval as a pause time controlled by the time controller 20. Therefore, the time controller 32 is an element that controls the output time of the sound wave control signal output from the frequency controller 31. The time controller 32 can only adopt a control method (continuous output control) in which the sound wave control signal output from the frequency controller 31 is continued for a certain time without including the pause time. Alternatively, it is possible to employ a control method (intermittent output control) in which the sound wave control signal output from the frequency controller 31 is alternately output between the output time and the non-output pause time. In the pattern of intermittent output control by the time controller 32 illustrated by FIG. 3, the sound wave by the frequency controller 31 is detected in the time zone t0 to t5 when the detector 10 shown in FIG. The control signal output time zones are indicated by t0 to t1, t2 to t3, and t4 to t5, and the pause time zones are indicated by t1 to t2 and t3 to t4. In the pattern shown in the figure, the output time of the sound wave control signal is randomly selected from the range of 0.5 to 1.5 sec, and the pause time is selected randomly from the range of 1 to 3 sec.

  The sound wave transmitter 40 converts the sound wave control signal controlled by the frequency controller 31 or the time controller 32 of the control unit 30 into a sound wave signal and outputs the sound wave signal to the sound emitting unit 50.

  FIG. 4 illustrates the frequency and pulse waveform of the sound wave signal when the sound wave transmitter 40 adopts the continuous output control of the sound wave signal in the time range t0 to tn (for example, 20 seconds). In this case, the frequency and the pulse waveform change at random for each time selected in the range of time T = 0.5 to 2 msec.

  FIG. 5 illustrates the frequency and pulse waveform of the sound wave signal when the sound wave transmitter 40 adopts the intermittent output control of the sound wave signal in the time range t0 to t1 (for example, 1.5 seconds). In this case, the frequency and the pulse waveform change at random for each time selected in the range of time T = 2 msec. Similarly in FIG. 6, the frequency and pulse waveform output during the sound wave signal emission time change randomly every time T = 2 msec in the time range t2 to t3 (for example, 1 second). The pulse waveform preferably has a function of generating an overshoot or undershoot pulse waveform as illustrated in FIG.

  The sound wave signal output by the sound wave transmitter 40 is input to the sound emitting means 50. The sound wave output by the sound wave transmitter 40 includes a pulse wave and a continuous wave, and these can be alternatively selected, but a pulse wave is usually selected. The sound emitting unit 50 includes an audio output unit 51 and a speaker 52.

  The audio output means 51 has a function of converting the continuous wave or pulse wave output from the sound wave transmitter 40 into an audio signal and amplifying it. The speaker 52 connected to the sound output means 51 emits sound. A single speaker or a plurality of speakers 52 used for four-legged beasts and birds are installed on a post installed on land, a roof of a building, or the like. On the other hand, the speaker 42 used for large or small fishes in aquarium tanks or farms is installed underwater as a waterproof specification.

  In the animal repelling apparatus configured as described above, when the detector 10 detects an animal, based on the detection signal, when the control means 30 is in the continuous output control mode, it is continuously within a certain time. A sound wave control signal is output, the sound wave transmitter 40 outputs a sound wave signal based on the sound wave control signal, and the speaker 52 of the sound emitting means 50 emits sound according to the sound wave signal. On the other hand, when the control unit 30 is in the intermittent output mode, the sound wave control signal is intermittently repeatedly output with a pause time, and the speaker 52 of the sound emitting unit 50 emits sound according to the sound wave control signal. In this case, the frequency of the sound wave control signal changes randomly within a range of 1 to 50 kHz as shown in FIG. In particular, when the sound wave emission time changes randomly in the range of 0.5 to 1.5 sec and the pause time also changes randomly in the range of 1 to 3 sec under intermittent output mode as shown in FIG. A situation that is difficult to learn with respect to the pitch of the sound and the timing at which the sound can be heard is remarkably created. When the frequency of the sound wave control signal is randomly changed within the range of 2 to 12 kHz as shown in FIG. 2 by the function of the control means 30 frequency controller 31, a great repelling effect is exhibited particularly for birds.

  Further, when the frequency of the sound wave signal is randomly changed by the control means 30 at every time selected in the range of 0.5 to 2 msec, the time zone in which the control means 30 continuously outputs the sound wave control signal. Then, since the frequency changes randomly every time selected in the extremely short range of 0.5 to 2 msec, the pitch of the sound changes frequently within a short time, making it difficult for animals to learn. Is more prominently produced and exhibits an excellent repellent effect.

  Thus, according to this animal repellent device, it becomes difficult for an animal to get used to the sound and the repellent effect is reduced, and it is possible to exert a high repellent effect permanently. The effect of threatening the animal can be enhanced by changing the frequency of the signal or by forming an overshoot or undershoot part in the pulse waveform.

  In the embodiment of the animal repellent device of FIG. 1A described above, a detection signal output when the detector 10 detects an animal is used as a trigger for starting up the entire device. In contrast, the embodiment of the animal repellent device of FIG. 1B omits the detector 10 of the animal repellent device of FIG. 1A, and instead outputs an activation signal at a scheduled time. This is an example in which the activation signal of the time controller 20 is used as a trigger for activation of the entire apparatus.

  In the embodiment of FIG. 1 (B), a start signal is output at a scheduled time artificially set in advance, or at a time when the time controller 20 detects ambient brightness and the brightness is reduced to a certain level. A start signal is output. And the control means 30 which received the starting signal which the time controller 20 output outputs the sound wave control signal of the frequency which changes at random, or the sound wave control signal of the frequency which changes at random is said time control. Or output every time interval as a pause time controlled by the device 20. In the embodiment of FIG. 1B, the power output from the power source P is used as driving power for the time controller 20, the control means 30, the sound wave transmitter 40, the sound emission means 50, and the like.

  The operation of the frequency controller 31, the point that the time controller 32 can employ the continuous output control and the intermittent output control described above, the operation of the sound wave transmitter 40, the operation of the sound emitting means 50, etc. This is the same as the case described in (A).

  In the animal repellent apparatus according to the embodiment of FIG. 1B, the time controller 20 activates the activation signal at the time set artificially or the time when the ambient brightness falls to a certain level, in other words, at the scheduled time. When the control means 30 is in the continuous output control mode, the sound wave control signal is continuously output within a certain time, and the sound wave transmitter 40 outputs the sound wave signal based on the sound wave control signal. The speaker 52 of the sound emitting means 50 emits sound according to the sound wave signal. On the other hand, when the control unit 30 is in the intermittent output mode, the sound wave control signal is intermittently repeatedly output with a pause time, and the speaker 52 of the sound emitting unit 50 emits sound according to the sound wave control signal. In this case, the frequency of the sound wave control signal changes randomly within a range of 1 to 50 kHz as shown in FIG. In particular, when the sound wave emission time changes randomly in the range of 0.5 to 1.5 sec and the pause time also changes randomly in the range of 1 to 3 sec under intermittent output mode as shown in FIG. A situation that is difficult to learn with respect to the pitch of the sound and the timing at which the sound can be heard is remarkably created. When the frequency of the sound wave control signal is randomly changed within the range of 2 to 12 kHz as shown in FIG. 2 by the function of the control means 30 frequency controller 31, a great repelling effect is exhibited particularly for birds.

  Further, when the frequency of the sound wave signal is randomly changed by the control means 30 at every time selected in the range of 0.5 to 2 msec, the time zone in which the control means 30 continuously outputs the sound wave control signal. Then, since the frequency changes randomly every time selected in the extremely short range of 0.5 to 2 msec, the pitch of the sound changes frequently within a short time, making it difficult for animals to learn. Is more prominently produced and exhibits an excellent repellent effect.

  Thus, according to this animal repellent device, it becomes difficult for an animal to get used to the sound and the repellent effect is reduced, and it is possible to exert a high repellent effect permanently. The effect of threatening the animal can be enhanced by changing the frequency of the signal or by forming an overshoot or undershoot part in the pulse waveform.

DESCRIPTION OF SYMBOLS 10 Detector 20 Time controller 30 Control means 40 Sound wave transmitter 50 Sound discharge means 51 Audio | voice output means 52 Speaker

  The present invention relates to an animal repellent device that is used to expel animals by emitting sound.

  Conventionally, various repelling devices or repelling systems are known as countermeasures against birds and animals. For example, those that use loud sounds such as explosive sounds and distress calls, those that generate sounds that birds and beasts dislike, those that use ultrasonic waves, those that actually skip objects like rocket fireworks, etc. Are known. By using these evasion systems, driving away bird strikes at airports and birds caught in wind power generators can also help protect animals by avoiding them and avoiding damage. It is.

  As a preceding example, a harmful beast that has entered a predetermined area, such as a wild boar, can be caused to escape from the area by irradiating ultrasonic waves having a frequency of 20 to 32 kHz and a sound pressure level of 70 dB or more. Beast threat devices have been proposed (see, for example, Patent Document 1). This Patent Document 1 also mentions intermittent emission of ultrasonic waves.

JP 2015-112098 A

  However, the above-described conventional apparatus or system has a problem that the repelling action is quickly reduced by the habituation based on the learning ability of the animal. There was a similar problem with the pest threatening device according to the preceding example.

  The present invention has been made in view of the above situation, and is based on the concept of emitting sound and driving away animals from a certain place or approaching a certain place. By taking measures such as randomly changing the frequency or emission time of the sound, it is difficult to cause a situation where the animal becomes accustomed to the sound and the repelling effect is reduced. It is an object to provide an animal repellent device that makes possible. It should be noted that the animals to which the animal repellent device according to the present invention is to be used include not only four-legged animals but also birds and large or small fish.

The present invention is an animal repelling device for repelling an animal by emitting sound, and outputs a sound wave control signal of a randomly changing frequency at every time interval as a pause time controlled by a time controller. and control means for the acoustic transmitter for transmitting a sound wave based on the acoustic wave control signal output from the control means, a sound emitting means for emitting a sound based on the sound signal output from the ultrasonic transmitter, Have According to the present invention, the level of the sound emitted from the sound emitting means changes randomly. For this reason, it is easy for an animal to avoid a situation where it is difficult to learn how to hear the sound, and the animal becomes accustomed to the sound and the repelling action is reduced.

In the present invention, the control means changes randomly within a period of 0.5 to 1.5 sec, separating the pause time from a function of randomly selecting the pause time from a range of 1 to 3 sec. A function of repeatedly outputting the sound wave control signal having a frequency to be performed, and a function of randomly changing the frequency for each time selected within a time of 0.5 to 2 msec.

  In order to create a situation where learning is difficult with respect to the pitch of the sound and the timing at which the sound is heard as described above and to avoid the reduction of the repelling action, the control means in particular makes the pause time randomly from a range of 1 to 3 seconds. It is desirable to have a function to select. If the pause time when the sound wave control signal is not output is too short or too long, it may be difficult to create a situation difficult for the animal to learn, so the pause time is randomly selected from a range of 1 to 3 seconds. It is desirable.

  Further, it is desirable that the control means has a function of repeatedly outputting the sound wave control signal having a frequency that randomly changes within a period of 0.5 to 1.5 seconds with the pause time. If the time for the control means to repeatedly output the sound wave control signal is too short or too long, it will be difficult to create a situation difficult for the animal to learn, so the output time is in the range of 0.5 to 1.5 sec. It is desirable to choose at random.

  In the present invention, the control means preferably has a function of randomly changing the frequency for each time selected in a range of 0.5 to 2 msec. In the time zone in which the control means continuously outputs the sound wave control signal, it has a function of randomly changing the frequency for each time selected in a very short range of 0.5 to 2 msec. Since the pitch of the sound changes frequently within a very short time, a situation that is difficult for an animal to learn is remarkably created.

  In the present invention, it is desirable that the sound wave transmitter has a function of outputting a sound wave signal having a pulse waveform. In the present invention, it is desirable that the sound wave generator has a function of generating an overshoot or undershoot pulse waveform. In terms of increased threat to animals, the sound of the pulse waveform is superior to the sound of the continuous waveform, and the sound of the overshoot or undershoot pulse waveform is superior to the sound of the simple pulse waveform. Has been shown to be more effective.

  The control means has a function of outputting a sound wave control signal having a frequency that randomly changes within a time during which the detector that detects the presence of the animal outputs the detection signal, and has a frequency that changes randomly. You may have a function which outputs a sound wave control signal for every time interval as an idle time controlled by a time controller. According to this invention, when the detector detects the presence of an animal, the control means intermittently repeatedly outputs a sound wave control signal with a pause time controlled by the time controller, and based on the sound wave control signal. A sound wave transmitter outputs a sound wave signal. The sound emitting means emits sound based on the sound wave signal. Moreover, because the frequency of the sound wave control signal changes randomly (randomly), it creates a situation that is difficult for animals to learn about the level of sound, etc. The situation of end is avoided.

  In the present invention, the control means has a function of outputting a sound wave control signal of a frequency that randomly changes in response to the activation signal of the time controller that outputs the activation signal at a scheduled time, and at random. It may have a function of outputting a sound wave control signal having a changing frequency for each time interval as a pause time controlled by the time controller. According to the present invention, when the time controller outputs the start signal at the scheduled time, the control means that receives the start signal intermittently repeatedly outputs the sound wave control signal with the pause time controlled by the time controller. The sound wave transmitter outputs a sound wave signal based on the sound wave control signal. The sound emitting means emits sound based on the sound wave signal. Moreover, because the frequency of the sound wave control signal changes randomly (randomly), it creates a situation that is difficult for animals to learn about the level of sound, etc. The situation of end is avoided.

  In the present invention, it is desirable that the frequency output by the control means is randomly changed within a range of 1 to 50 kHz. A sound with a frequency of 1 to 50 kHz is a considerably high-frequency sound, and is effective in driving away animals.

  In the present invention, it is desirable that the frequency output by the control means is randomly changed within a range of 2 to 12 kHz. Sounds with a frequency of 2-12 kHz have been found to be particularly useful in driving away birds.

  In the present invention, the sound emitting means includes an audio output means for converting the sound wave signal output from the control means into an audio signal and amplifying it, and a speaker connected to the audio output means for emitting sound. It is desirable. When the sound is emitted by the sound emitting means in this way, it is easy to increase the threatening action on the animal by changing the volume of the sound, which helps to improve the action of driving away the animal.

  As described above, according to the animal repellent device according to the present invention, it is difficult for an animal to get used to the sound and the repellent effect is reduced, so that the high repellent effect is maintained over a long period of time. It will be possible to exert, and it will be easier to obtain a permanent repellent effect. In addition, the effect of threatening the animal can be enhanced by changing the sound frequency or modulating the pulse waveform to overshoot or undershoot.

(A) And (B) is a schematic block diagram of the animal repelling apparatus which concerns on different embodiment of this invention. It is explanatory drawing which showed the range of the frequency of the sound wave control signal output by a control means. It is explanatory drawing which illustrated the pattern of the intermittent output control by the time controller of a control means. It is explanatory drawing which illustrated the frequency and waveform of the sound wave signal output for every time selected in the range of 0.5-2 msec within sound emission time t0-tn. It is explanatory drawing which illustrated the frequency and waveform of the sound wave signal output for every time selected in the range of 2 msec within sound wave emission time t0-t1. It is explanatory drawing which illustrated the frequency and waveform of the sound wave signal output for every time selected in the range of 2 msec within sound wave emission time t2-t3. It is explanatory drawing which illustrated the pulse waveform which carried out overshoot or undershoot.

  1A and 1B are schematic configuration diagrams of an animal repelling apparatus according to different embodiments of the present invention. FIG. 2 is an explanatory diagram showing the frequency range of the sound wave control signal output by the control means 30, and FIG. 3 is an explanatory diagram illustrating an intermittent output control pattern by the time controller 32 of the control means 30. Further, FIG. 4 is an explanatory diagram illustrating the frequency and waveform of a sound wave signal output every time selected within a range of 0.5 to 2 msec within the sound emission time t0 to tn, and FIG. 5 is a sound wave emission time t0. FIG. 6 is an explanatory diagram illustrating the frequency and waveform of a sound wave signal output every time selected within a range of 2 msec within t1, FIG. 6 shows every time selected within a range of 2 msec within a sound wave emission time t2 to t3 FIG. 7 is an explanatory diagram illustrating the overshoot or undershoot pulse waveform.

  The power supply P of the animal repellent device schematically shown in FIG. 1 (A) may be a portable battery such as a dry battery or a commercial power supply. The power output from the power supply P is detected by the detector 10. And the time controller 20, the control means 30, the sound wave transmitter 40, the sound emission means 50, and the like.

  The detector 10 may employ a general animal detection sensor such as an infrared sensor. When the animal enters the detection area, the presence of the animal is detected and the detection signal is output. The animals include wild animals such as wild boar and deer classified as quadruped vertebrates, molluscs such as snakes, birds such as crows and pigeons, and large fish such as sharks and dolphins and small fish such as sardines. Other medium-sized fish are also included. A detection signal output when the detector 10 detects the presence of an animal is input to the control means 30.

  The control means 30 has a function of outputting a sound wave control signal having a frequency that randomly changes within the time when the detector 10 detects the presence of an animal and outputs the detection signal, and this function is frequency control. Exerted by the vessel 31.

  The frequency controller 31 is an element that controls the frequency of the sound wave control signal. As shown in FIG. 2, the function of the frequency controller 31 allows the frequency of the sound wave control signal to be random within a range of 1 to 50 kHz. Can be set to a value that changes. A sound with a frequency of 1 to 50 kHz is a considerably high-frequency sound, and a sound that randomly changes within the range is considered to be a clearly effective band for driving away animals. If the frequency is lower than 1 kHz, the sound is in the middle or low range, diminishing the effect of driving off the animal, and the animal is said to be accustomed to sound. When the frequency exceeds 50 kHz, the highest sound range is reached, and there is a concern that it may be outside the audible range of the animal. When the object to be avoided is a bird, the frequency of the sound wave control signal can be set to a value that randomly changes within the range of 2 to 12 kHz. A sound having a frequency of 2 to 12 kHz is a considerably high-frequency sound, and a sound that randomly changes within the range is a clearly effective band for driving away birds. Further, the frequency controller 31 has a function of randomly changing the frequency of the sound wave signal for each time selected in a range of 0.5 to 2 msec within the output time of the sound wave control signal. .

  The sound wave control signal output by the frequency controller 31 is output at each time interval as a pause time controlled by the time controller 20. Therefore, the time controller 32 is an element that controls the output time of the sound wave control signal output from the frequency controller 31. The time controller 32 can only adopt a control method (continuous output control) in which the sound wave control signal output from the frequency controller 31 is continued for a certain time without including the pause time. Alternatively, it is possible to employ a control method (intermittent output control) in which the sound wave control signal output from the frequency controller 31 is alternately output between the output time and the non-output pause time. In the pattern of intermittent output control by the time controller 32 illustrated by FIG. 3, the sound wave by the frequency controller 31 is detected in the time zone t0 to t5 when the detector 10 shown in FIG. The control signal output time zones are indicated by t0 to t1, t2 to t3, and t4 to t5, and the pause time zones are indicated by t1 to t2 and t3 to t4. In the pattern shown in the figure, the output time of the sound wave control signal is randomly selected from the range of 0.5 to 1.5 sec, and the pause time is selected randomly from the range of 1 to 3 sec.

  The sound wave transmitter 40 converts the sound wave control signal controlled by the frequency controller 31 or the time controller 32 of the control unit 30 into a sound wave signal and outputs the sound wave signal to the sound emitting unit 50.

  FIG. 4 illustrates the frequency and pulse waveform of the sound wave signal when the sound wave transmitter 40 adopts the continuous output control of the sound wave signal in the time range t0 to tn (for example, 20 seconds). In this case, the frequency and the pulse waveform change at random for each time selected in the range of time T = 0.5 to 2 msec.

  FIG. 5 illustrates the frequency and pulse waveform of the sound wave signal when the sound wave transmitter 40 adopts the intermittent output control of the sound wave signal in the time range t0 to t1 (for example, 1.5 seconds). In this case, the frequency and the pulse waveform change at random for each time selected in the range of time T = 2 msec. Similarly in FIG. 6, the frequency and pulse waveform output during the sound wave signal emission time change randomly every time T = 2 msec in the time range t2 to t3 (for example, 1 second). The pulse waveform preferably has a function of generating an overshoot or undershoot pulse waveform as illustrated in FIG.

  The sound wave signal output by the sound wave transmitter 40 is input to the sound emitting means 50. The sound wave output by the sound wave transmitter 40 includes a pulse wave and a continuous wave, and these can be alternatively selected, but a pulse wave is usually selected. The sound emitting unit 50 includes an audio output unit 51 and a speaker 52.

  The audio output means 51 has a function of converting the continuous wave or pulse wave output from the sound wave transmitter 40 into an audio signal and amplifying it. The speaker 52 connected to the sound output means 51 emits sound. A single speaker or a plurality of speakers 52 used for four-legged beasts and birds are installed on a post installed on land, a roof of a building, or the like. On the other hand, the speaker 42 used for large or small fishes in aquarium tanks or farms is installed underwater as a waterproof specification.

  In the animal repelling apparatus configured as described above, when the detector 10 detects an animal, based on the detection signal, when the control means 30 is in the continuous output control mode, it is continuously within a certain time. A sound wave control signal is output, the sound wave transmitter 40 outputs a sound wave signal based on the sound wave control signal, and the speaker 52 of the sound emitting means 50 emits sound according to the sound wave signal. On the other hand, when the control unit 30 is in the intermittent output mode, the sound wave control signal is intermittently repeatedly output with a pause time, and the speaker 52 of the sound emitting unit 50 emits sound according to the sound wave control signal. In this case, the frequency of the sound wave control signal changes randomly within a range of 1 to 50 kHz as shown in FIG. In particular, when the sound wave emission time changes randomly in the range of 0.5 to 1.5 sec and the pause time also changes randomly in the range of 1 to 3 sec under intermittent output mode as shown in FIG. A situation that is difficult to learn with respect to the pitch of the sound and the timing at which the sound can be heard is remarkably created. When the frequency of the sound wave control signal is randomly changed within the range of 2 to 12 kHz as shown in FIG. 2 by the function of the control means 30 frequency controller 31, a great repelling effect is exhibited particularly for birds.

  Further, when the frequency of the sound wave signal is randomly changed by the control means 30 at every time selected in the range of 0.5 to 2 msec, the time zone in which the control means 30 continuously outputs the sound wave control signal. Then, since the frequency changes randomly every time selected in the extremely short range of 0.5 to 2 msec, the pitch of the sound changes frequently within a short time, making it difficult for animals to learn. Is more prominently produced and exhibits an excellent repellent effect.

  Thus, according to this animal repellent device, it becomes difficult for an animal to get used to the sound and the repellent effect is reduced, and it is possible to exert a high repellent effect permanently. The effect of threatening the animal can be enhanced by changing the frequency of the signal or by forming an overshoot or undershoot part in the pulse waveform.

  In the embodiment of the animal repellent device of FIG. 1A described above, a detection signal output when the detector 10 detects an animal is used as a trigger for starting up the entire device. In contrast, the embodiment of the animal repellent device of FIG. 1B omits the detector 10 of the animal repellent device of FIG. 1A, and instead outputs an activation signal at a scheduled time. This is an example in which the activation signal of the time controller 20 is used as a trigger for activation of the entire apparatus.

  In the embodiment of FIG. 1 (B), a start signal is output at a scheduled time artificially set in advance, or at a time when the time controller 20 detects ambient brightness and the brightness is reduced to a certain level. A start signal is output. And the control means 30 which received the starting signal which the time controller 20 output outputs the sound wave control signal of the frequency which changes at random, or the sound wave control signal of the frequency which changes at random is said time control. Or output every time interval as a pause time controlled by the device 20. In the embodiment of FIG. 1B, the power output from the power source P is used as driving power for the time controller 20, the control means 30, the sound wave transmitter 40, the sound emission means 50, and the like.

  The operation of the frequency controller 31, the point that the time controller 32 can employ the continuous output control and the intermittent output control described above, the operation of the sound wave transmitter 40, the operation of the sound emitting means 50, etc. This is the same as the case described in (A).

  In the animal repellent apparatus according to the embodiment of FIG. 1B, the time controller 20 activates the activation signal at the time set artificially or the time when the ambient brightness falls to a certain level, in other words, at the scheduled time. When the control means 30 is in the continuous output control mode, the sound wave control signal is continuously output within a certain time, and the sound wave transmitter 40 outputs the sound wave signal based on the sound wave control signal. The speaker 52 of the sound emitting means 50 emits sound according to the sound wave signal. On the other hand, when the control unit 30 is in the intermittent output mode, the sound wave control signal is intermittently repeatedly output with a pause time, and the speaker 52 of the sound emitting unit 50 emits sound according to the sound wave control signal. In this case, the frequency of the sound wave control signal changes randomly within a range of 1 to 50 kHz as shown in FIG. In particular, when the sound wave emission time changes randomly in the range of 0.5 to 1.5 sec and the pause time also changes randomly in the range of 1 to 3 sec under intermittent output mode as shown in FIG. A situation that is difficult to learn with respect to the pitch of the sound and the timing at which the sound can be heard is remarkably created. When the frequency of the sound wave control signal is randomly changed within the range of 2 to 12 kHz as shown in FIG. 2 by the function of the control means 30 frequency controller 31, a great repelling effect is exhibited particularly for birds.

  Further, when the frequency of the sound wave signal is randomly changed by the control means 30 at every time selected in the range of 0.5 to 2 msec, the time zone in which the control means 30 continuously outputs the sound wave control signal. Then, since the frequency changes randomly every time selected in the extremely short range of 0.5 to 2 msec, the pitch of the sound changes frequently within a short time, making it difficult for animals to learn. Is more prominently produced and exhibits an excellent repellent effect.

  Thus, according to this animal repellent device, it becomes difficult for an animal to get used to the sound and the repellent effect is reduced, and it is possible to exert a high repellent effect permanently. The effect of threatening the animal can be enhanced by changing the frequency of the signal or by forming an overshoot or undershoot part in the pulse waveform.

DESCRIPTION OF SYMBOLS 10 Detector 20 Time controller 30 Control means 40 Sound wave transmitter 50 Sound discharge means 51 Audio | voice output means 52 Speaker

Claims (11)

An animal repellent device for repelling animals by emitting sound,
Control means for outputting a sound wave control signal having a frequency that varies at random, a sound wave transmitter for emitting a sound wave based on the sound wave control signal output from the control means, and a sound wave signal output from the sound wave transmitter An animal repelling device comprising sound emitting means for emitting sound based on   The control means has a function of outputting a sound wave control signal having a frequency that randomly changes within a time during which the detector that detects the presence of the animal outputs the detection signal, and has a frequency that changes randomly. The animal repelling apparatus according to claim 1, wherein the animal repelling apparatus has a function of outputting a sound wave control signal for each time interval as a pause time controlled by a time controller.   The control means has a function of outputting a sound wave control signal of a frequency that randomly changes in response to the start signal of a time controller that outputs a start signal at a scheduled time, and has a frequency of a frequency that changes randomly. The animal repelling apparatus according to claim 1, wherein the animal repelling apparatus has a function of outputting a sound wave control signal for each time interval as a pause time controlled by the time controller.   The animal repelling apparatus according to claim 2 or 3, wherein the control means has a function of randomly selecting the pause time from a range of 1 to 3 seconds.   5. The control means according to claim 2, wherein the control means has a function of repeatedly outputting the sound wave control signal having a frequency that randomly changes within a time period of 0.5 to 1.5 sec with the pause time. The animal repelling apparatus described in any one of the items.   The animal repelling device according to any one of claims 1 to 5, wherein the control means has a function of randomly changing the frequency for each time selected within a time of 0.5 to 2 msec.   The animal repellent device according to any one of claims 1 to 6, wherein the frequency output by the control means is randomly changed within a range of 1 to 50 kHz.   The animal repellent device according to any one of claims 1 to 6, wherein a frequency output by the control means is randomly changed within a range of 2 to 12 kHz.   2. The sound emitting means comprises: sound output means for converting a sound wave signal output from the sound wave transmitter into an audio signal and amplifying the sound output means; and a speaker connected to the sound output means for emitting sound. The animal repellent device according to any one of claims 8 to 9.   The animal repellent device according to any one of claims 1 to 9, wherein the sound wave transmitter has a function of outputting a sound wave signal having a pulse waveform.   The animal repellent device according to any one of claims 1 to 10, wherein the sound wave transmitter has a function of generating a pulse waveform in which overshoot or undershoot occurs.

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