Frequency-adjustable bionic mouse repeller

Abstract

The utility model discloses a frequency-adjustable bionic mouse repeller, which belongs to the technical field of mouse repelling devices and comprises a switching power supply, a wireless module, a touch screen and a mouse repelling control panel, the switching power supply supplies power to the wireless module, the touch screen and the mouse repelling control panel, and the touch screen is in wired connection with the mouse repelling control panel. The touch screen sends control signals to the ultrasonic horn and the cat-call-imitating horn in the rat-repelling control panel through a communication line, the control signals are forwarded to upper-layer equipment through a wireless module, and the rat-repelling control panel internally comprises a power supply voltage reduction circuit, a communication level conversion circuit, an audio generation circuit and an audio signal amplification circuit. The switch power supply transmits a voltage reduction power supply into each power utilization module through a power supply voltage reduction circuit in the rat repelling control board, the touch screen transmits a communication signal into the rat repelling control board through the communication level conversion circuit, the audio generation circuit plays audio, and the played audio signal is amplified and played through the audio signal amplification circuit. Compared with DC-DC circuit power supply, cost and pcb area are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of rat repellent devices, and particularly relates to a frequency-adjustable and bionic rat repellent device. Background Art

[0002] At present, the control mode of the rat repellent device is that a relay controls the power supply of the ultrasonic rat repellent device to realize the switching between the working and non-working modes of the rat repellent device. The ultrasonic rat repellent device can generate ultrasonic waves of 20kHz - 55kHz, which can effectively stimulate within a range of 50 meters and can cause rats to feel threatened and uneasy by the ultrasonic waves, achieving the effect of driving away rats in the archives. There is a cat meow imitation switch on the rat repellent device. When the switch is pressed, the rat repellent device will emit ultrasonic waves and cat meow imitation sounds when powered on, making the rat repellent more realistic.

[0003] Disadvantages of the existing control technology: 1. Only controlling the power supply, problems with the circuit may affect the operation of the rat repellent device. 2. The rat repellent frequency cannot be adjusted online in real time. 3. The volume of the cat meow imitation sound cannot be adjusted, and the audio file cannot be replaced. 4. The working state of the rat repellent device cannot be monitored in real time.

[0004] Therefore, how to provide a rat repellent device that can adjust the power supply of the rat repellent device, and adjust the ultrasonic frequency and cat meow imitation audio of the rat repellent device is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Utility Model

[0005] For this reason, the utility model provides a frequency-adjustable and bionic rat repellent device to solve the problem of the circuit affecting the operation of the rat repellent device caused by only controlling the power supply of the rat repellent device to turn it on and off in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The present application provides a frequency-adjustable and bionic rat repellent device, including a switching power supply, a wireless module, a touch screen, and a rat repellent control board. The switching power supply supplies power to the wireless module, the touch screen, and the rat repellent control board. The touch screen and the rat repellent control board are connected by wire. The touch screen sends control signals to the ultrasonic horn and the cat meow imitation horn in the rat repellent control board through a communication line, and forwards them to the upper device through the wireless module. The rat repellent control board includes a power supply buck circuit, a communication level conversion circuit, an audio generation circuit, and an audio signal amplification circuit. The switching power supply delivers the bucked power supply to each power-consuming module through the power supply buck circuit in the rat repellent control board. The touch screen delivers communication signals to the rat repellent control board through the communication level conversion circuit to control the audio generation circuit in the rat repellent control board to play audio. The audio signal of the audio generation circuit is amplified by the audio signal amplification circuit and then played.

[0008] Further, the power supply buck circuit includes a first buck circuit, a second buck circuit, and a third buck circuit. The first buck circuit steps down the switching power supply to 9V, the second buck circuit steps down the 9V power supply to 5V, and the third buck circuit steps down the 9V power supply to 3.3V.

[0009] Further, the first buck circuit includes capacitor C67, capacitor C68, capacitor C69, capacitor C73, capacitor C63, capacitor C66, capacitor C65, capacitor C70, capacitor C71, capacitor C72, inductor L3, DCDC control chip U25, resistor R66, resistor R64, and resistor R65. Capacitor C67, capacitor C68, and capacitor C69 are connected in parallel and connected to pins 7 and 8 of the DCDC control chip U25. Capacitor C73 is connected to pin 6 of the DCDC control chip U25. Resistor R66 is connected between pins 7 and 8 and pin 3 of the DCDC control chip U25. Capacitor C63 is connected between pin 1 and pin 2 of the DCDC control chip U25. Capacitor C66 is connected to pin 4 of the DCDC control chip U25. Inductor L3 and capacitor C65 are connected between pin 2 and pin 5 of the DCDC control chip U25. Resistor R64 is connected in parallel with inductor L3. Resistor R65 is connected in series with resistor R64. Capacitor C70, capacitor C71, and capacitor C72 are connected in parallel across resistor R65 and resistor R64.

[0010] Further, the second buck circuit includes capacitor C47, capacitor C48, capacitor C49, capacitor C50, and voltage regulator chip U20. Capacitor C47 and capacitor C48 are connected in parallel and connected to pin 1 of the voltage regulator chip U20. Capacitor C49 and capacitor C50 are connected in parallel and connected to pin 3 of the voltage regulator chip U20.

[0011] Further, the third buck circuit includes capacitor C43, capacitor C44, capacitor C45, capacitor C46, and voltage regulator chip U19. Capacitor C43 and capacitor C44 are connected in parallel and connected between pin 1 and pin 3 of the voltage regulator chip U19. Capacitor C45 and capacitor C46 are connected in parallel and connected between pin 1 and pin 2 of the voltage regulator chip U19.

[0012] Further, the communication level conversion circuit includes resistor R68, diode LED2, resistor R69, diode LED3, resistor R55, triode Q2, resistor R54, transceiver chip U18, capacitor C40, resistor R56, resistor R57, diodes U12, U13 and U14. Resistor R69 and diode LED3 are connected in series at the line sending end. Resistor R68 and diode LED2 are connected in series at the line receiving end and are connected to the first pin of transceiver chip U18. Resistor R55 is connected to the base of triode Q2. Resistor R54 is connected to the collector of triode Q2 and the second and third pins of transceiver chip U18. The emitter of triode Q2 is connected to the fourth pin of transceiver chip U18. Capacitor C40 and resistor R56 are connected in series and are connected between the seventh and eighth pins of transceiver chip U18. Resistor R57 is connected to the sixth pin of transceiver chip U18. Diodes U12, U13 and U14 are connected in series. Both ends of diode U13 are respectively connected to the sixth and seventh pins of transceiver chip U18.

[0013] The utility model has the following advantages:

[0014] This application includes a switching power supply, a wireless module, a touch screen, and a mouse repellent control board. The switching power supply powers the wireless module, the touch screen, and the mouse repellent control board. The touch screen and the mouse repellent control board are connected by wire. The touch screen sends control signals to the ultrasonic horn and the cat meow imitation horn in the mouse repellent control board through a communication line and forwards them to the upper device through the wireless module. The mouse repellent control board includes a power supply step-down circuit, a communication level conversion circuit, an audio generation circuit, and an audio signal amplification circuit. The switching power supply delivers the stepped-down power supply to each power-consuming module through the power supply step-down circuit in the mouse repellent control board. The touch screen delivers communication signals to the mouse repellent control board through the communication level conversion circuit to control the audio generation circuit in the mouse repellent control board to play audio. The audio signal of the audio generation circuit is amplified by the audio signal amplification circuit and then played.

[0015] In order to cope with the input of different power supply voltages, this application steps down the switching power supply to three voltages of 9V, 5V, and 3.3V for system power supply through the power supply step-down circuit. Its advantages are that the high voltage difference step-down by the DC-DC DC circuit reduces the working pressure of the rear LDO voltage regulator, reduces the voltage difference of the rear LDO voltage regulator, enables the LDO voltage regulator to reduce heat generation and improve the voltage conversion efficiency, and saves cost and pcb area compared with using only DC-DC DC circuits for power supply.

[0016] Since the signal level that can be accepted by the single-chip microcomputer is TTL-UART signal, which is only suitable for on-board communication and has poor anti-interference performance for long-distance communication. The color touch screen uses 485 differential communication, which is suitable for long-distance communication and has strong anti-interference performance. Since the communication levels are different, the communication levels need to be converted. The communication level conversion circuit provided in this application adds TVS diodes U12, U13, and U14 between AB lines and to the ground respectively. The TVS diode has a high surge power absorption capacity, can absorb a surge power of up to several kilowatts, protects the circuit from large current impacts, and clamps the voltage between the two poles to a safe value, which can effectively protect precision components. Description of the Drawings

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0018] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size should still fall within the scope that can be covered by the technical content disclosed by the present invention without affecting the effects that the present invention can produce and the purposes that can be achieved.

[0019] Figure 1 It is a system connection block diagram of a frequency-adjustable and bionic rat repeller provided by the present invention;

[0020] Figure 2 It is a circuit diagram of the first step-down circuit provided by the present invention;

[0021] Figure 3 It is a circuit diagram of the second step-down circuit provided by the present invention;

[0022] Figure 4 It is a circuit diagram of the third step-down circuit provided by the present invention;

[0023] Figure 5 It is a circuit diagram of the communication level conversion circuit provided by the present invention;

[0024] Figure 6 It is a circuit diagram of the audio generation circuit and the audio signal amplification circuit provided by the present invention. Detailed Embodiments

[0025] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] This application provides a frequency-adjustable, bionic rat repeller, as Figure 1 shown, which includes a switching power supply, a wireless module, a touch screen, and a rat repelling control board. The switching power supply supplies power to the wireless module, the touch screen, and the rat repelling control board. The touch screen is wired to the rat repelling control board. The touch screen sends control signals to the ultrasonic horn and the cat meowing horn in the rat repelling control board through a communication line, and forwards them to the upper device through the wireless module. The rat repelling control board includes a power supply buck circuit, a communication level conversion circuit, an audio generation circuit, and an audio signal amplification circuit. The switching power supply delivers the bucked power to each power-consuming module through the power supply buck circuit in the rat repelling control board. The touch screen delivers communication signals to the rat repelling control board through the communication level conversion circuit to control the audio generation circuit in the rat repelling control board to play audio. The audio signal of the audio generation circuit is amplified by the audio signal amplification circuit and then played.

[0027] The operator operates the rat repeller switch on the touch screen. Data is transmitted between the touch screen and the rat repeller circuit board through the Modbus-RTU protocol. The rat repeller circuit board controls the operation and stop of the ultrasonic horn and the cat meowing horn. The ultrasonic frequency can be adjusted in three gears: high, medium, and low.

[0028] The main interface of the touch screen can display the real-time communication status between the touch screen and the rat repelling circuit board, as well as the real-time working status and working frequency band. It can control the operation of the rat repeller circuit board and the switch of the cat meowing sound, and can adjust the working frequency of the ultrasonic horn. An interface password pop-up window is set on the main interface of the touch screen. Only when the staff enters the correct password can they enter the interface. This avoids other personnel setting incorrect parameters and affecting the normal operation of the rat repelling intelligent perception terminal. There is a parameter setting interface on the touch screen, where the device address of each device can be set, and multiple devices can be connected to the upper device for use.

[0029] In order to cope with the input of different power supply voltages, this application uses the power supply buck circuit to step down the switching power supply to three voltages of 9V, 5V, and 3.3V respectively for system power supply. Its advantages are that the high-voltage difference bucking by the DC-DC DC circuit reduces the working pressure of the rear LDO voltage regulator, reduces the voltage difference of the rear LDO voltage regulator, enables the LDO voltage regulator to reduce heat generation and improve the voltage conversion efficiency, and saves costs and pcb area compared with using only DC-DC DC circuits for power supply.

[0030] The power supply buck circuit includes a first buck circuit, a second buck circuit, and a third buck circuit. The first buck circuit steps down the switching power supply to 9V, the second buck circuit steps down the 9V power supply to 5V, and the third buck circuit steps down the 9V power supply to 3.3V.

[0031] As Figure 2 shown, the first buck circuit includes capacitor C67, capacitor C68, capacitor C69, capacitor C73, capacitor C63, capacitor C66, capacitor C65, capacitor C70, capacitor C71, capacitor C72, inductor L3, DCDC control chip U25, resistor R66, resistor R64, and resistor R65. Capacitor C67, capacitor C68, and capacitor C69 are connected in parallel and connected to pins 7 and 8 of DCDC control chip U25. Capacitor C73 is connected to pin 6 of DCDC control chip U25. Resistor R66 is connected between pins 7, 8, and 3 of DCDC control chip U25. Capacitor C63 is connected between pins 1 and 2 of DCDC control chip U25. Capacitor C66 is connected to pin 4 of DCDC control chip U25. Inductor L3 and capacitor C65 are connected between pins 2 and 5 of DCDC control chip U25. Resistor R64 is connected in parallel with inductor L3. Resistor R65 is connected in series with resistor R64. Capacitor C70, capacitor C71, and capacitor C72 are connected in parallel across resistor R65 and resistor R64.

[0032] The first buck circuit adopts the technical solution of Buck synchronous rectification buck. In this application scenario of high voltage difference buck, compared with the buck methods of LDC buck and resistor voltage division, Buck synchronous rectification buck has higher power conversion efficiency, stable high-power output, short-circuit, and overload protection. The basic structure of the Buck synchronous rectification buck circuit diagram includes a power switch element, usually a MOSFET (integrated in the SY8205 chip), and an inductor. When the switch is turned on, the inductor stores electrical energy. When the switch is turned off, the inductor passes through the load and the synchronous rectification MOSFET (integrated in the SY8205 chip), thereby realizing the buck function. By controlling the duty cycle of the switch, the output voltage can be adjusted. After being divided by resistors R64 and R65 and filtered by capacitor C65, the output voltage is fed back to the switch controller, and the switch controller adjusts the switch frequency to stabilize the output voltage at the target value.

[0033] As Figure 3 shown, the second buck circuit includes capacitor C47, capacitor C48, capacitor C49, capacitor C50, and voltage regulator chip U20. Capacitor C47 and capacitor C48 are connected in parallel and connected to pin 1 of voltage regulator chip U20. Capacitor C49 and capacitor C50 are connected in parallel and connected to pin 3 of voltage regulator chip U20.

[0034] AsFigure 4 As shown, the third step-down circuit includes capacitor C43, capacitor C44, capacitor C45, capacitor C46 and voltage regulator chip U19. Capacitor C43 and capacitor C44 are in parallel and connected between the first pin and the third pin of voltage regulator chip U19. Capacitor C45 and capacitor C46 are in parallel and connected between the first pin and the second pin of voltage regulator chip U19.

[0035] The second step-down circuit and the third step-down circuit further step down the voltage generated after Buck synchronous rectification and step-down. Since the loads of 5V and 3.3V are small-current loads and also low-dropout step-down, the LDO method is used for step-down. The principle of the LDO step-down circuit is mainly based on the linear regulation method. By controlling the on or off of the MOSFET transistor (integrated in the SE7805-5V chip and AMS1117-3.3 chip), the stable reduction of the input voltage to the output voltage is achieved. The LDO step-down circuit utilizes the negative feedback circuit inside the LDO chip. By adjusting the on-state of the MOSFET transistor at the output end, after the high voltage at the input end passes through the MOSFET transistor, and then through the feedback resistor voltage division and sent to the feedback circuit, the output can be stably set to the specified low voltage. This circuit has the advantages of good stability, low noise, and low cost.

[0036] Since the signal level that the single-chip microcomputer can accept is the TTL-UART signal, which is only suitable for on-board communication and has poor anti-interference performance for long-distance communication, while the color touch screen uses 485 differential communication, which is suitable for long-distance communication and has strong anti-interference performance. Due to the different communication levels, the communication levels need to be converted.

[0037] As Figure 5 As shown, the communication level conversion circuit includes resistor R68, diode LED2, resistor R69, diode LED3, resistor R55, triode Q2, resistor R54, transceiver chip U18, capacitor C40, resistor R56, resistor R57, diode U12, diode U13 and diode U14. Resistor R69 and diode LED3 are connected in series at the line sending end. Resistor R68 and diode LED2 are connected in series at the line receiving end and connected to the first pin of transceiver chip U18. Resistor R55 is connected to the base of triode Q2. Resistor R54 is connected to the collector of triode Q2 and the second and third pins of transceiver chip U18. The emitter of triode Q2 is connected to the fourth pin of transceiver chip U18. Capacitor C40 and resistor R56 are connected in series and connected between the seventh pin and the eighth pin of transceiver chip U18. Resistor R57 is connected to the sixth pin of transceiver chip U18. Diode U12, diode U13 and diode U14 are connected in series. Both ends of diode U13 are respectively connected to the sixth pin and the seventh pin of transceiver chip U18.

[0038] The communication level conversion circuit provided by this application adds TVS diodes U12, U13, and U14 between the AB line and to the ground respectively. The TVS diodes have a high surge power absorption capacity and can absorb a surge power of up to several kilowatts, protecting the circuit from large current impacts. The voltage between the two poles of the voltage clamping is clamped at a safe value, which can effectively protect precision components. The resistor R54, resistor R55, and triode Q2 form a 485 automatic transceiver circuit. When there is no data transmitted at the TX transmitting end, it is at a high level. At this time, the triode Q2 conducts. Due to the pull-up of the R54 resistor, RE and DE are at a low level, and the MAX3485ESA chip enters the receiving mode. When the TX transmitting end transmits data and the TX level reverses, RE and DE are at a high level, and the MAX3485ESA chip enters the transmitting mode until the data transmission is completed and TX returns to a high level, and the MAX3485ESA chip enters the receiving mode again.

[0039] As Figure 6 shown, the audio generation circuit includes an audio chip U2 (using the CH8001 chip), capacitors C41 and C42. The capacitors C41 and C42 are connected in series and are respectively connected to the 10th pin and the 11th pin of the audio chip U2. The 9th pin of the audio chip U2 is connected to a chip DAC. The audio signal amplification circuit includes an audio amplifier U3 (using the NS4111 chip), capacitors C5, C6, C2, C3, and resistors R1, R2, and R3. The capacitor C5 and the resistor R1 are connected in series and are connected to the 3rd pin of the audio amplifier U3. The capacitor C6 and the resistor R2 are connected in series and are connected to the 4th pin of the audio amplifier U3. The resistor R3 is connected to the 1st pin of the audio amplifier U3. The capacitors C2 and C3 are connected in parallel and are connected to the 6th pin of the audio amplifier U3.

[0040] The audio generation circuit uses an audio module to burn audio information into the audio chip, communicates with the single-chip microcomputer through a serial port, generates an audio signal through the chip DAC, and plays the audio through the inductive bead L2 in the sound generating unit after being amplified by the audio signal amplifier in the audio signal amplification circuit.

[0041] Although the present invention has been described in detail with general descriptions and specific embodiments above, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. An adjustable frequency, bionic mouse repellent, characterized in that, It includes a switching power supply, a wireless module, a touch screen, and a rat repellent control board. The switching power supply supplies power to the wireless module, the touch screen, and the rat repellent control board. The touch screen and the rat repellent control board are connected by wire. The touch screen sends control signals to the ultrasonic horn and the cat meow imitation horn in the rat repellent control board through a communication line, and forwards them to the upper device through the wireless module. The rat repellent control board includes a power supply buck circuit, a communication level conversion circuit, an audio generation circuit, and an audio signal amplification circuit. The switching power supply delivers the bucked power supply to each power-consuming module through the power supply buck circuit in the rat repellent control board. The touch screen delivers communication signals into the rat repellent control board through the communication level conversion circuit to control the audio generation circuit in the rat repellent control board to play audio. The audio signal of the audio generation circuit is amplified by the audio signal amplification circuit and then played.

2. The frequency-adjustable, bionic mouse repellent according to claim 1, characterized in that, The power supply buck circuit includes a first buck circuit, a second buck circuit, and a third buck circuit. The first buck circuit buckles the switching power supply down to 9V. The second buck circuit buckles the 9V power supply down to 5V. The third buck circuit buckles the 9V power supply down to 3.3V.

3. The frequency-adjustable and bionic mouse repellent according to claim 2, characterized in that, The first buck circuit includes capacitor C67, capacitor C68, capacitor C69, capacitor C73, capacitor C63, capacitor C66, capacitor C65, capacitor C70, capacitor C71, capacitor C72, inductor L3, DCDC control chip U25, resistor R66, resistor R64, and resistor R65. Capacitor C67, capacitor C68, and capacitor C69 are connected in parallel and connected to pins 7 and 8 of DCDC control chip U25. Capacitor C73 is connected to pin 6 of DCDC control chip U25. Resistor R66 is connected between pins 7 and 8 and pin 3 of DCDC control chip U25. Capacitor C63 is connected between pin 1 and pin 2 of DCDC control chip U25. Capacitor C66 is connected to pin 4 of DCDC control chip U25. Inductor L3 and capacitor C65 are connected between pin 2 and pin 5 of DCDC control chip U25. Resistor R64 is connected in parallel with inductor L3. Resistor R65 is connected in series with resistor R64. Capacitor C70, capacitor C71, and capacitor C72 are connected in parallel across resistor R65 and resistor R64.

4. The frequency-adjustable and bionic mouse repellent according to claim 2, wherein, The second buck circuit includes capacitor C47, capacitor C48, capacitor C49, capacitor C50, and voltage regulator chip U20. Capacitor C47 and capacitor C48 are connected in parallel and connected to pin 1 of voltage regulator chip U20. Capacitor C49 and capacitor C50 are connected in parallel and connected to pin 3 of voltage regulator chip U20.

5. The frequency-adjustable bionic mouse repellent according to claim 2, characterized in that, The third step-down circuit includes a capacitor C43, a capacitor C44, a capacitor C45, a capacitor C46 and a voltage regulator chip U19. The capacitor C43 and the capacitor C44 are connected in parallel and are connected between the first pin and the third pin of the voltage regulator chip U19. The capacitor C45 and the capacitor C46 are connected in parallel and are connected between the first pin and the second pin of the voltage regulator chip U19.

6. The frequency - adjustable, bionic mouse repellent according to claim 1, characterized in that, The communication level conversion circuit includes a resistor R68, a diode LED2, a resistor R69, a diode LED3, a resistor R55, a triode Q2, a resistor R54, a transceiver chip U18, a capacitor C40, a resistor R56, a resistor R57, diodes U12, U13 and U14. The resistor R69 and the diode LED3 are connected in series at the line sending end. The resistor R68 and the diode LED2 are connected in series at the line receiving end and are connected to the first pin of the transceiver chip U18. The resistor R55 is connected to the base of the triode Q2. The resistor R54 is connected between the collector of the triode Q2 and the second and third pins of the transceiver chip U18. The emitter of the triode Q2 is connected to the fourth pin of the transceiver chip U18. The capacitor C40 and the resistor R56 are connected in series and are connected between the seventh pin and the eighth pin of the transceiver chip U18. The resistor R57 is connected to the sixth pin of the transceiver chip U18. The diodes U12, U13 and U14 are connected in series. Both ends of the diode U13 are respectively connected to the sixth pin and the seventh pin of the transceiver chip U18.

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