Bird repeller circuit and bird repeller

Abstract

This utility model discloses a bird repeller circuit and a bird repeller, relating to the field of bird repeller technology. The bird repeller circuit includes an infrared sensing circuit, a light driving circuit, a frequency modulation circuit, a solar charging circuit, and a main control circuit. The solar charging circuit converts light energy into electrical energy and outputs a voltage signal corresponding to the light intensity. The infrared sensing circuit detects whether birds are approaching a preset area and outputs a corresponding sensing signal. When the main control circuit detects birds approaching the preset area based on the sensing signal and detects daytime based on the voltage signal, it controls the frequency modulation circuit to drive the player to play different styles of sounds to repel birds. When the system detects birds approaching the preset area based on the sensing signal and detects nighttime based on the voltage signal, it controls the light driving circuit to drive the LED light to flash and repel birds. This utility model aims to improve the bird repeling effect and its sustainability.

Description

Technical Field

[0001] This utility model relates to the field of bird deterrent technology, and in particular to a bird deterrent circuit and a bird deterrent device. Background Technology

[0002] Bird damage to crops is a long-standing and significant problem in agricultural production. With seasonal changes, especially during crop ripening, bird foraging behavior directly impacts yields and causes economic losses. Therefore, effective bird control measures are crucial. Common bird control methods include shape-based deterrence, scent-based deterrence, and sound and light deterrence.

[0003] However, while shape-based deterrence methods, such as the use of scarecrows, can initially deter birds, their effectiveness diminishes over time as birds adapt to this static threat. Scent-based bird deterrence uses bird repellents, which, although safe for birds, have a short duration of effect and require frequent reapplication, increasing labor costs and operational complexity. As for sound and light-based bird deterrence, while it can scare birds away by simulating sound or light, the continuous noise emitted by the equipment and the possibility that birds may gradually adapt to these stimuli also reduce its effectiveness over time. Therefore, there is an urgent need to develop a new type of bird deterrent that is highly efficient, stable, intelligently controllable, and environmentally friendly to address the current bird control challenges facing agriculture. Utility Model Content

[0004] The main purpose of this invention is to provide a bird deterrent circuit, which aims to solve the problems of poor bird deterrent effect and poor sustainability of existing bird deterrent methods.

[0005] To achieve the above objectives, the bird repeller proposed in this utility model includes a battery, an LED light, and a player. The bird repeller circuit includes:

[0006] An infrared sensing circuit, connected to the battery, is used to detect whether birds are approaching a preset area and output a corresponding sensing signal.

[0007] A light driving circuit is connected to the LED light and the battery respectively, and the light driving circuit is used to drive the LED light to emit a flash.

[0008] A frequency modulation circuit is connected to the player and the battery respectively. The frequency modulation circuit is used to output drive signals of different frequencies to drive the player to play different styles of sound.

[0009] A solar charging circuit is connected to the battery. The solar charging circuit is used to convert light energy into electrical energy to charge the battery, and to output a voltage signal corresponding to the light intensity.

[0010] The main control circuit is connected to the solar charging circuit, the infrared sensing circuit, the light driving circuit, and the frequency modulation circuit. The main control circuit is used to control the frequency modulation circuit to work when the sensing signal detects that birds are approaching the preset area and the voltage signal detects that it is daytime; and to control the light driving circuit to work when the sensing signal detects that birds are approaching the preset area and the voltage signal detects that it is nighttime.

[0011] In one embodiment, the solar charging circuit includes a solar panel, a first resistor, a second resistor, a third resistor, a first capacitor, a first diode, and a battery protection chip.

[0012] The positive output terminal of the solar panel and one end of the first resistor are connected to the positive terminal of the first diode. The negative output terminal of the solar panel and one end of the second resistor are grounded. The other ends of the first resistor and the second resistor are connected to the main control circuit. The negative terminal of the first diode and the positive terminal of the battery are connected to one end of the third resistor. The other end of the third resistor and one end of the first capacitor are connected to the VDD pin of the battery protection chip. The negative terminal of the battery and the other end of the first capacitor are connected to the GND pin of the battery protection chip. The VM1 and VM2 pins of the battery protection chip are grounded.

[0013] In one embodiment, the frequency modulation circuit includes a voice chip, a second capacitor, a fourth resistor, a fifth resistor, a first transistor, and a first inductor.

[0014] The output terminal of the voice chip is connected to one end of the fourth resistor. The other end of the fourth resistor and one end of the fifth resistor are connected to the base of the first transistor. The emitter of the first transistor, the other end of the fifth resistor, and one end of the second capacitor are grounded to the ground terminal of the voice chip. The collector of the first transistor and the first end of the first inductor are connected to the first driving terminal of the player. The second end of the first inductor is connected to the second driving terminal of the player. The third end of the first inductor is connected to the battery. The feedback terminal and the input terminal of the voice chip are respectively connected to the main control circuit. The other end of the second capacitor and the power supply terminal of the voice chip are connected to the power supply terminal of the frequency modulation circuit.

[0015] In one embodiment, the light driving circuit includes a sixth resistor, a seventh resistor, an eighth resistor, and a first switching transistor;

[0016] One end of the seventh resistor is connected to the main control circuit, the other end of the seventh resistor and one end of the eighth resistor are connected to the controlled terminal of the first switching transistor, the first terminal of the first switching transistor and the other end of the eighth resistor are grounded, the second terminal of the first switching transistor is connected to one end of the sixth resistor, the other end of the sixth resistor is connected to the negative terminal of the LED, and the power supply terminal of the light driving circuit is connected to the positive terminal of the LED.

[0017] In one embodiment, the first switch is an NMOS transistor, the gate of the NMOS transistor is the controlled terminal of the first switch, the source of the NMOS transistor is the first terminal of the first switch, and the drain of the NMOS transistor is the second terminal of the first switch.

[0018] In one embodiment, the infrared sensing circuit includes an infrared sensor and a third capacitor; a first power supply terminal of the infrared sensor and one end of the third capacitor are connected to the power supply terminal of the infrared sensing circuit, a second power supply terminal of the infrared sensor and the other end of the third capacitor are grounded, and the output terminal of the infrared sensor is connected to the main control circuit.

[0019] In one embodiment, the bird deterrent circuit further includes:

[0020] A voltage regulator circuit is provided, with its input terminal connected to the battery and its output terminal connected to the infrared sensing circuit, the frequency modulation circuit, and the main control circuit, respectively.

[0021] In one embodiment, the bird deterrent circuit further includes:

[0022] A trigger circuit, which is connected to the main control circuit, is used to output a corresponding trigger signal when triggered by the user.

[0023] The main control circuit is also used to control the operation of the light driving circuit and the frequency modulation circuit according to the trigger signal.

[0024] In one embodiment, the main control circuit includes an MCU chip.

[0025] This utility model also proposes a bird repeller, including a battery, an LED light, a player, and the bird repeller circuit described above; the battery is connected to the infrared sensing circuit, the light driving circuit, the frequency modulation circuit, the solar charging circuit, and the main control circuit respectively; the LED light is connected to the light driving circuit; and the player is connected to the frequency modulation circuit.

[0026] This utility model employs a bird deterrent circuit, comprising a battery, an LED light, and a player. The bird deterrent circuit includes an infrared sensing circuit, a light driving circuit, a frequency modulation circuit, a solar charging circuit, and a main control circuit. The solar charging circuit converts light energy into electrical energy to charge the battery and outputs a voltage signal corresponding to the light intensity. The infrared sensing circuit detects whether birds are approaching a preset area and outputs a corresponding sensing signal. The main control circuit controls the frequency modulation circuit to operate when birds are detected approaching the preset area based on the sensing signal and the voltage signal indicates it is daytime; and controls the light driving circuit to operate when birds are detected approaching the preset area based on the sensing signal and the voltage signal indicates it is nighttime. The frequency modulation circuit can output different frequency driving signals based on the audio signal output by the main control circuit, driving the player to play different sound patterns. The light driving circuit can output a corresponding light driving signal based on the light control signal output by the main control circuit, driving the LED light to flash. Thus, this invention deters birds by emitting different types of audio signals during the day and by emitting flashing lights at night. It offers diverse and intelligent bird deterrence methods, without using bird repellents or other chemical substances, and does not generate prolonged noise, making it an environmentally friendly solution. Furthermore, this invention utilizes a solar charging circuit for photovoltaic power generation, eliminating the need for an external power source or additional light sensors for light intensity detection, thus achieving efficient energy utilization and simplifying the bird deterrent circuitry. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of an embodiment of the bird repeller provided by this utility model;

[0029] Figure 2 An electronic circuit diagram of a solar charging circuit for an embodiment of the bird deterrent circuit provided by this utility model;

[0030] Figure 3 An electronic circuit diagram of the frequency modulation circuit of an embodiment of the bird repeller circuit provided by this utility model;

[0031] Figure 4 An electronic circuit diagram of the light driving circuit of one embodiment of the bird repeller circuit provided by this utility model;

[0032] Figure 5 An electronic circuit diagram of the infrared sensing circuit of an embodiment of the bird repeller circuit provided by this utility model;

[0033] Figure 6 Electronic circuit diagram of the trigger circuit and main control circuit of an embodiment of the bird repeller circuit provided by this utility model;

[0034] Figure 7 The electronic circuit diagram of the voltage regulator circuit of one embodiment of the bird deterrent circuit provided by this utility model.

[0035] Explanation of icon numbers:

[0036]

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0041] Common bird deterrence methods in existing technologies include shape-based deterrence, scent-based deterrence, and sound and light deterrence. Shape-based deterrence, such as the use of scarecrows, while initially effective, diminishes in effectiveness over time as birds adapt to this static threat. Scent-based deterrence uses bird repellents; although safe for birds, its effectiveness is short-lived, requiring frequent reapplication, increasing labor costs and operational complexity. Sound and light deterrence, while mimicking sound or light to repel birds, suffers from continuous noise and bird adaptation over time, leading to reduced effectiveness. Therefore, there is an urgent need for a new, highly efficient, stable, intelligent, controllable, and environmentally friendly bird deterrent device to address the current bird control challenges in agriculture.

[0042] This utility model proposes a bird deterrent circuit.

[0043] Please see Figure 1 In one embodiment of this utility model, the bird repeller includes a battery 01, an LED light, and a player. The bird repeller circuit includes:

[0044] Infrared sensing circuit 02 is connected to battery 01. Infrared sensing circuit 02 is used to detect whether birds are approaching the preset area and output the corresponding sensing signal.

[0045] The light driving circuit 03 is connected to the LED light and the battery 01 respectively. The light driving circuit 03 is used to drive the LED light to emit a flash.

[0046] The frequency modulation circuit 04 is connected to the player and the battery 01 respectively. The frequency modulation circuit 04 is used to output drive signals of different frequencies to drive the player to play different styles of sound.

[0047] The solar charging circuit 05 is connected to the battery 01. The solar charging circuit 05 is used to convert light energy into electrical energy to charge the battery 01, and to output a voltage signal corresponding to the light intensity.

[0048] The main control circuit 06 is connected to the solar charging circuit 05, the infrared sensing circuit 02, the light driving circuit 03, and the frequency modulation circuit 04. The main control circuit 06 is used to control the frequency modulation circuit 04 to work when the sensing signal detects that birds are approaching the preset area and the voltage signal detects that it is daytime; and to control the light driving circuit 03 to work when the sensing signal detects that birds are approaching the preset area and the voltage signal detects that it is nighttime.

[0049] It should be noted that the infrared sensing circuit 02 can detect the approach of birds using one or more pyroelectric infrared sensors. If at least one pyroelectric infrared sensor detects a bird approaching, it is considered that a bird has been detected; if none of the multiple pyroelectric infrared sensors detect a bird approaching, it is considered that no bird has been detected. The infrared sensing circuit 02 can be activated when a bird is detected and output a sensing signal. When no bird is detected, it enters a low-power state, such as standby, to conserve battery power. The light driving circuit 03 can control the LED to flash at a preset frequency by controlling the conduction frequency of the switching transistor. The frequency modulation circuit 04 can convert the audio signal output from the main control circuit 06 into a driving signal to drive the player to play sound using an audio decoding chip. The frequency modulation circuit 04 can also amplify the driving signal using a power amplifier before outputting it. The solar charging circuit 05 can be composed of a solar panel SP and a battery protection chip. When there is sufficient sunlight, it converts solar energy into electrical energy to charge the battery 01. The voltage of the solar panel SP is higher when the light intensity is strong and lower when the light intensity is weak. Therefore, the main control circuit 06 can distinguish between day and night by whether the voltage of the solar panel SP reaches a preset threshold. It can be understood that when the ambient light intensity is greater than or equal to the preset threshold, the environment can be considered daytime; when the ambient light intensity is less than the preset threshold, the environment can be considered nighttime. The main control circuit 06 may include an MCU chip U3, which can sample the voltage value of the output power of the solar charging circuit 05 and detect whether it is currently daytime or nighttime based on this voltage value.

[0050] In this embodiment, during the daytime, the solar charging circuit 05 converts solar energy into electrical energy to charge the battery 01 and outputs a voltage signal corresponding to the daytime light intensity to the main control circuit 06. At this time, the main control circuit 06 detects that it is daytime based on the voltage signal. If the infrared sensing circuit 02 detects birds approaching a preset area, it can control the frequency modulation circuit 04 to operate. The frequency modulation circuit 04 outputs a drive signal corresponding to the audio signal output by the main control circuit 06, driving the player to play sound. The main control circuit 06 can communicate with the frequency modulation circuit 04, causing the frequency modulation circuit 04 to output audio drive signals of different frequencies, driving the player to output different types of sound. For example, at the first music level, the player emits a 12-second "whooshing" sound; at the second music level, it emits a 24-second "ghostly" sound; at the third music level, it emits a 20-second "simulated human broadcast" sound; at the fourth music level, it emits a 30-second alternating "eagle call and dog bark" sound; and at the fifth music level, the above sounds can be played in a loop for a total of 86 seconds. Thus, this embodiment can play different types of sounds during the day to deter birds from approaching. Since birds generally do not easily adapt to multiple sound stimuli, the bird-repelling effect of this embodiment is good. At night, the solar charging circuit 05 can output a voltage signal corresponding to the light intensity at night to the main control circuit 06. At this time, the main control circuit 06 detects that it is nighttime based on the voltage signal. If the infrared sensing circuit 02 detects that birds are approaching the preset area, it can control the light driving circuit 03 to work. The light driving circuit 03 outputs a light driving signal corresponding to the light control signal output by the main control circuit 06, driving the LED to emit flashes of the corresponding frequency. Since birds are afraid of flashing lights, this can serve as a bird deterrent. Thus, in this embodiment, different types of audio signals are emitted to scare away birds when they are detected approaching during the day, and flashing lights are emitted to scare away birds when they are detected approaching at night. The system does not emit sound constantly, thus avoiding prolonged noise and preventing noise pollution at night. It offers diverse and continuous bird deterrent methods.

[0051] In this invention, the solar charging circuit 05 converts light energy into electrical energy to charge the battery 01 and outputs a voltage signal corresponding to the light intensity. The infrared sensing circuit 02 detects whether birds are approaching a preset area and outputs a corresponding sensing signal. The main control circuit 06 controls the frequency modulation circuit 04 to operate when the sensing signal detects birds approaching the preset area and the voltage signal indicates it is daytime; and controls the light driving circuit 03 to operate when the sensing signal detects birds approaching the preset area and the voltage signal indicates it is nighttime. The frequency modulation circuit 04 can output different frequency driving signals based on the audio signal output by the main control circuit 06, driving the player to play different types of sounds. The light driving circuit 03 can output a corresponding light driving signal based on the light control signal output by the main control circuit 06, driving the LED light to flash. Thus, this invention deters birds by emitting different types of audio signals during the day and by emitting flashing lights at night. It offers diverse and intelligent bird deterrence methods, without using bird repellents or other chemical substances, and does not generate prolonged noise, making it an environmentally friendly solution. Furthermore, this invention utilizes a solar charging circuit 05 for photovoltaic power generation, eliminating the need for an external power source or an additional light sensor for light intensity detection, thus achieving efficient energy utilization and simplifying the bird deterrent circuitry.

[0052] Please see Figure 2 In one embodiment of this utility model, the solar charging circuit 05 includes a solar panel SP, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a first diode D1, and a battery protection chip U1.

[0053] The positive output terminal of the solar panel SP and one end of the first resistor R1 are connected to the positive terminal of the first diode D1. The negative output terminal of the solar panel SP and one end of the second resistor R2 are grounded. The other ends of the first resistor R1 and the second resistor R2 are connected to the main control circuit 06. The negative terminal of the first diode D1 and the positive terminal of the battery BAT are connected to one end of the third resistor R3. The other end of the third resistor R3 and one end of the first capacitor C1 are connected to the VDD pin of the battery protection chip U1. The negative terminal of the battery BAT and the other end of the first capacitor C1 are connected to the GND pin of the battery protection chip U1. The VM1 and VM2 pins of the battery protection chip U1 are grounded.

[0054] In this embodiment, the first resistor R1 and the second resistor R2 are used to provide voltage sampling for the solar panel SP, facilitating the main control circuit 06 to detect the light intensity and determine whether it is day or night. The first diode D1 prevents the battery BAT from supplying reverse power to the solar panel SP under nighttime or low-light conditions, helping to extend the battery BAT's lifespan. The battery protection chip U1 can detect whether the battery BAT is fully charged and whether there are any charging / discharging abnormalities. When the battery BAT is fully charged or there is a charging / discharging abnormality, it controls the internal field-effect transistor to turn off to protect the battery BAT from damage and extend its lifespan.

[0055] Please see Figure 3 In one embodiment of this utility model, the frequency modulation circuit 04 includes a voice chip U2, a second capacitor C2, a fourth resistor R4, a fifth resistor R5, a first transistor Q1, and a first inductor L1.

[0056] The output terminal (OUT pin) of the voice chip U2 is connected to one end of the fourth resistor R4. The other end of the fourth resistor R4 and one end of the fifth resistor R5 are connected to the base of the first transistor Q1. The emitter of the first transistor Q1, the other end of the fifth resistor R5, and one end of the second capacitor C2 are grounded to the ground terminal of the voice chip U2. The collector of the first transistor Q1 and the first end of the first inductor L1 are connected to the first drive terminal of the player SPK. The second end of the first inductor L1 is connected to the second drive terminal of the player SPK. The third end of the first inductor L1 is connected to the battery 01. The feedback terminal (OUT BUSY_H pin) and the input terminal (DATA pin) of the voice chip U2 are connected to the main control circuit 06. The other end of the second capacitor C2 and the power supply terminal of the voice chip U2 are connected to the power supply terminal of the frequency modulation circuit 04.

[0057] In this embodiment, the OUT BUSY_H pin of the voice chip U2 can provide feedback on its operating status. For example, when the pin is high, the chip is in operation; when the pin is low, the chip is in a stopped state. The voice chip U2 can input audio signals via the DATA pin, convert the audio signals into corresponding drive signals, output them via the OUT pin, amplify them through the first transistor Q1, perform impedance matching and filtering through the first inductor L1, and output them to the player SPK, thereby driving the player SPK to play different types of sounds. It is understood that the bird deterrent circuit can include multiple players, such as the first player SPK1, the second player SPK2, and the third player SPK3, respectively positioned at different locations within the bird deterrent area to better deter birds from entering the area.

[0058] Please see Figure 4In one embodiment of this utility model, the light driving circuit 03 includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 and a first switching transistor Q2;

[0059] One end of the seventh resistor R7 is connected to the main control circuit 06. The other end of the seventh resistor R7 and one end of the eighth resistor R8 are connected to the controlled terminal of the first switching transistor Q2. The first terminal of the first switching transistor Q2 and the other end of the eighth resistor R8 are grounded. The second terminal of the first switching transistor Q2 is connected to one end of the sixth resistor R6. The other end of the sixth resistor R6 is connected to the negative terminal of the LED. The power supply terminal of the light driving circuit 03 is connected to the positive terminal of the LED.

[0060] In one embodiment, the first switch Q2 is an NMOS transistor, the gate of the NMOS transistor is the controlled terminal of the first switch Q2, the source of the NMOS transistor is the first terminal of the first switch Q2, and the drain of the NMOS transistor is the second terminal of the first switch Q2.

[0061] In this embodiment, the main control circuit 06 can control the frequency of the NMOS transistor's on and off by controlling its gate voltage, thereby causing the LED to flash at a set frequency, thus achieving the purpose of driving the LED to emit flashes to scare away birds.

[0062] Please see Figure 5 In one embodiment of this utility model, the infrared sensing circuit 02 includes an infrared sensor PIR and a third capacitor C3; the first power supply terminal of the infrared sensor PIR and one end of the third capacitor C3 are connected to the power supply terminal of the infrared sensing circuit 02, the second power supply terminal of the infrared sensor PIR and the other end of the third capacitor C3 are grounded, and the output terminal of the infrared sensor PIR is connected to the main control circuit 06.

[0063] In this embodiment, the infrared sensing circuit 02 may include multiple infrared sensors PIR and a third capacitor C3, such as infrared sensor PIR1, third capacitor C31, infrared sensor PIR2, third capacitor C32, infrared sensor PIR1, and third capacitor C33. Multiple infrared sensors PIR jointly detect whether birds are approaching a preset area (bird-repelling area). The multiple infrared sensors PIR can be respectively positioned at different locations within the bird-repelling area to detect whether birds are approaching from different directions. For example, each infrared sensor PIR has a 120° sensing range, and using three sensors provides a 360° sensing range. The main control circuit 06 can receive the sensing signals output by the multiple infrared sensors PIR. When it is determined that at least one infrared sensor PIR has detected a bird approaching, it is considered that a bird has been detected approaching the bird-repelling area. When it is determined that none of the infrared sensors PIR have detected a bird approaching, it is considered that no birds are approaching the bird-repelling area.

[0064] Please see Figure 7 In one embodiment of this utility model, the bird deterrent circuit further includes:

[0065] The voltage regulator circuit has its input terminal connected to battery 01, and its output terminal connected to infrared sensing circuit 02, frequency modulation circuit 04, and main control circuit 06, respectively.

[0066] In this embodiment, the voltage regulator circuit may include a voltage regulator chip U4, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, and a seventh capacitor C7. It can regulate the voltage output by the battery 01 and output it, suppressing ripple voltage, and powering the infrared sensing circuit 02, the frequency modulation circuit 04, and the main control circuit 06.

[0067] Please see Figure 6 In one embodiment of this utility model, the bird deterrent circuit further includes:

[0068] The trigger circuit is connected to the main control circuit 06. The trigger circuit is used to output a corresponding trigger signal when triggered by the user.

[0069] The main control circuit 06 is also used to control the operation of the light drive circuit 03 and the frequency modulation circuit 04 according to the trigger signal.

[0070] In one embodiment, the main control circuit 06 includes an MCU chip U3.

[0071] In this embodiment, the trigger circuit may include multiple electronic buttons, such as a music button S1 and a volume button S2. The trigger signals for the music button S1 and volume button S2 can be input to the MCU chip U3. Each time the music button S1 is pressed, the MCU chip U3 can switch to different music levels according to the trigger signal, controlling the player to play different sound styles at different music levels. Each time the volume button S2 is pressed, the MCU chip U3 can control the player to gradually increase the volume according to the trigger signal. The volume will increase sequentially according to the set levels until it reaches the maximum volume, then automatically returns to the minimum volume, and then cycles back to increasing. Alternatively, the MCU chip U3 can control the player to gradually decrease the volume according to the trigger signal. The volume will decrease sequentially according to the set levels until it reaches the minimum volume, then automatically returns to the maximum volume, and then cycles back to decreasing.

[0072] This utility model also proposes a bird repeller, which includes a battery 01, an LED light, a player, and the bird repeller circuit described above. The battery 01 is connected to the infrared sensing circuit 02, the light driving circuit 03, the frequency modulation circuit 04, the solar charging circuit 05, and the main control circuit 06. The LED light is connected to the light driving circuit 03, and the player is connected to the frequency modulation circuit 04. The specific structure of the bird repeller circuit is as described in the above embodiments. Since this bird repeller adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0073] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A bird deterrent circuit, characterized in that, The bird repeller includes a battery, an LED light, and a player. The bird repeller circuit includes: An infrared sensing circuit, connected to the battery, is used to detect whether birds are approaching a preset area and output a corresponding sensing signal. A light driving circuit is connected to the LED light and the battery respectively, and the light driving circuit is used to drive the LED light to emit a flash. A frequency modulation circuit is connected to the player and the battery respectively. The frequency modulation circuit is used to output drive signals of different frequencies to drive the player to play different styles of sound. A solar charging circuit is connected to the battery. The solar charging circuit is used to convert light energy into electrical energy to charge the battery, and to output a voltage signal corresponding to the light intensity. The main control circuit is connected to the solar charging circuit, the infrared sensing circuit, the light driving circuit, and the frequency modulation circuit. The main control circuit is used to control the frequency modulation circuit to work when the sensing signal detects that birds are approaching the preset area and the voltage signal detects that it is daytime; and to control the light driving circuit to work when the sensing signal detects that birds are approaching the preset area and the voltage signal detects that it is nighttime.

2. The bird deterrent circuit as described in claim 1, characterized in that, The solar charging circuit includes a solar panel, a first resistor, a second resistor, a third resistor, a first capacitor, a first diode, and a battery protection chip. The positive output terminal of the solar panel and one end of the first resistor are connected to the positive terminal of the first diode. The negative output terminal of the solar panel and one end of the second resistor are grounded. The other ends of the first resistor and the second resistor are connected to the main control circuit. The negative terminal of the first diode and the positive terminal of the battery are connected to one end of the third resistor. The other end of the third resistor and one end of the first capacitor are connected to the VDD pin of the battery protection chip. The negative terminal of the battery and the other end of the first capacitor are connected to the GND pin of the battery protection chip. The VM1 and VM2 pins of the battery protection chip are grounded.

3. The bird deterrent circuit as described in claim 1, characterized in that, The frequency modulation circuit includes a voice chip, a second capacitor, a fourth resistor, a fifth resistor, a first transistor, and a first inductor. The output terminal of the voice chip is connected to one end of the fourth resistor. The other end of the fourth resistor and one end of the fifth resistor are connected to the base of the first transistor. The emitter of the first transistor, the other end of the fifth resistor, and one end of the second capacitor are grounded to the ground terminal of the voice chip. The collector of the first transistor and the first end of the first inductor are connected to the first driving terminal of the player. The second end of the first inductor is connected to the second driving terminal of the player. The third end of the first inductor is connected to the battery. The feedback terminal and the input terminal of the voice chip are respectively connected to the main control circuit. The other end of the second capacitor and the power supply terminal of the voice chip are connected to the power supply terminal of the frequency modulation circuit.

4. The bird deterrent circuit as described in claim 1, characterized in that, The light driving circuit includes a sixth resistor, a seventh resistor, an eighth resistor, and a first switching transistor; One end of the seventh resistor is connected to the main control circuit, the other end of the seventh resistor and one end of the eighth resistor are connected to the controlled terminal of the first switching transistor, the first terminal of the first switching transistor and the other end of the eighth resistor are grounded, the second terminal of the first switching transistor is connected to one end of the sixth resistor, the other end of the sixth resistor is connected to the negative terminal of the LED, and the power supply terminal of the light driving circuit is connected to the positive terminal of the LED.

5. The bird deterrent circuit as described in claim 4, characterized in that, The first switching transistor is an NMOS transistor, the gate of the NMOS transistor is the controlled terminal of the first switching transistor, the source of the NMOS transistor is the first terminal of the first switching transistor, and the drain of the NMOS transistor is the second terminal of the first switching transistor.

6. The bird deterrent circuit as described in claim 1, characterized in that, The infrared sensing circuit includes an infrared sensor and a third capacitor; the first power supply terminal of the infrared sensor and one end of the third capacitor are connected to the power supply terminal of the infrared sensing circuit, the second power supply terminal of the infrared sensor and the other end of the third capacitor are grounded, and the output terminal of the infrared sensor is connected to the main control circuit.

7. The bird deterrent circuit as described in claim 1, characterized in that, Also includes: A voltage regulator circuit is provided, with its input terminal connected to the battery and its output terminal connected to the infrared sensing circuit, the frequency modulation circuit, and the main control circuit, respectively.

8. The bird deterrent circuit as described in claim 1, characterized in that, Also includes: A trigger circuit, which is connected to the main control circuit, is used to output a corresponding trigger signal when triggered by the user. The main control circuit is also used to control the operation of the light driving circuit and the frequency modulation circuit according to the trigger signal.

9. The bird deterrent circuit as described in claim 1, characterized in that, The main control circuit includes an MCU chip.

10. A bird deterrent device, characterized in that, The device includes a battery, an LED light, a player, and a bird deterrent circuit as described in any one of claims 1 to 9; the battery is connected to the infrared sensing circuit, the light driving circuit, the frequency modulation circuit, the solar charging circuit, and the main control circuit, respectively; the LED light is connected to the light driving circuit; and the player is connected to the frequency modulation circuit.

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