Intelligent bird bathtub control circuit

Abstract

The utility model relates to the technical field of intelligent control, and discloses an intelligent bird bathtub control circuit which comprises a single chip microcomputer, a water level detection starting circuit, a temperature detection protection circuit, a water pump and a water cleanliness detection circuit. The water level detection starting circuit, the temperature detection protection circuit, the water pump and the water cleanliness detection circuit are all connected with the single-chip microcomputer, the water level in the bird bath tub is automatically sensed through the water level detection starting circuit, and then the water pump is controlled to start or stop working. The temperature detection protection circuit ensures that the bird bath basin does not work at the icing temperature, and the water cleanliness detection circuit realizes equal-division automatic monitoring and alarming of the cleanliness of water in the bird bath basin.

Description

Technical Field

[0001] This utility model relates to the field of intelligent control technology, and in particular to an intelligent bird bath control circuit. Background Technology

[0002] Current bird bath tubs are relatively traditional and simple, lacking intelligent features and not incorporating smart control technology, which causes inconvenience during use and affects the user experience. Utility Model Content

[0003] In view of this, the present invention provides an intelligent bird bathing basin control circuit to solve the problem that bird bathing basins in the prior art cannot be intelligently controlled.

[0004] To achieve the above objectives, this utility model proposes an intelligent bird bath control circuit, comprising: a microcontroller, a water level detection start circuit, a temperature detection protection circuit, a water pump, and a water cleanliness detection circuit, wherein the water level detection start circuit, the temperature detection protection circuit, the water pump, and the water cleanliness detection circuit are all connected to the microcontroller;

[0005] The water level detection start-up circuit includes a capacitive sensing chip, a water level metal probe, and a MOS transistor. The microcontroller is electrically connected to the capacitive sensing chip, the capacitive sensing chip is electrically connected to the water level metal probe, and the microcontroller is connected to the water pump through the MOS transistor.

[0006] The temperature detection and protection circuit includes a temperature sensor, a temperature voltage divider resistor, and a voltage divider capacitor. The temperature voltage divider resistor is connected to the temperature sensor via a voltage divider connection, and the temperature voltage divider resistor and the voltage divider capacitor are connected in parallel. The microcontroller is connected to the temperature voltage divider resistor through a voltage sampling circuit.

[0007] The water cleanliness detection circuit includes a turbidity sensor, an operational amplifier, and an electrically erasable programmable read-only memory (EROM). The EROM is connected to the microcontroller, and the turbidity sensor is connected to the microcontroller through the operational amplifier.

[0008] Optionally, the temperature sensor is a sensor with a resistance of 10.0kΩ at 25°C.

[0009] Optionally, the water level metal probe is installed inside the water tank of the smart bird bath.

[0010] Optionally, the water cleanliness detection circuit further includes an indicator light, which is electrically connected to the microcontroller.

[0011] Optionally, it also includes a circuit to prevent the water pump from running dry. The circuit is connected to the microcontroller via electrical signals. The circuit includes a charging port, a reverse protection diode, a protection resistor, and a protection voltage divider resistor. The output of the charging port is connected to the input of the reverse protection diode. A protection resistor and a protection voltage divider resistor are provided at the output of the reverse protection diode. The microcontroller is connected to the protection voltage divider resistor through a voltage acquisition circuit.

[0012] Implementing the embodiments of this utility model will have the following beneficial effects:

[0013] The bird bath tub is intelligently started and stopped by automatically sensing the water level with a probe to control the water pump to start or stop. It also protects the water pump by automatically identifying when the water is frozen, thus extending the lifespan of the bird bath tub. Furthermore, it intelligently detects water clarity to ensure the bird bath tub's effectiveness. Attached Figure Description

[0014] 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 these drawings without creative effort.

[0015] in:

[0016] Figure 1 This is a schematic diagram of the water level detection start-up circuit in a smart bird bath control circuit provided in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the temperature detection and protection circuit in a smart bird bath control circuit provided in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the water cleanliness detection circuit in an intelligent bird bath control circuit provided in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the structure of the anti-dry running circuit in the control circuit of an intelligent bird bath tub provided in this application embodiment. Detailed Implementation

[0020] 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.

[0021] like Figure 1-4 As shown in the figure, this application embodiment provides an intelligent bird bath control circuit, including: a microcontroller, a water level detection start circuit, a temperature detection protection circuit, a water pump, and a water cleanliness detection circuit, wherein the water level detection start circuit, the temperature detection protection circuit, the water pump, and the water cleanliness detection circuit are all connected to the microcontroller;

[0022] The water level detection start-up circuit includes a capacitive sensing chip, a water level metal probe, and a MOS transistor. The microcontroller is electrically connected to the capacitive sensing chip, the capacitive sensing chip is electrically connected to the water level metal probe, and the microcontroller is connected to the water pump through the MOS transistor.

[0023] For example, the water level detection start circuit consists of U4 (SC01, capacitive sensing chip) and T16 (water level metal probe) and other RC circuits.

[0024] When the water level metal probe T16 contacts the water level, the capacitance value sensed by pin 5 of U4 through C11 and R5 is greater than the reference capacitance value formed by C13 and C7 at pin 4. Therefore, pin 6 will output a low level from a high level. After pin 3 of the U1 microcontroller detects the low level output by U4, it outputs a high level from pin 2, controlling Q18 to conduct. This turns on Q1 (MOSFET), which in turn powers J1 (water pump) through D7 (SS34), and the bathtub starts spraying water.

[0025] When the water level metal probe T16 leaves the water level, the capacitance value sensed by pin 5 of U4 through C11 and R5 is smaller than the reference capacitance value formed by C13 and C7 at pin 4. Then pin 6 will output a high level from a low level. After pin 3 of the U1 microcontroller detects the high level output by U4, it outputs a low level from pin 2, Q18 is cut off, thus Q1 (MOS transistor) is cut off, the power supply to J1 (water pump) is disconnected, and the bathtub stops spraying water.

[0026] The temperature detection and protection circuit includes a temperature sensor, a temperature voltage divider resistor, and a voltage divider capacitor. The temperature voltage divider resistor is connected to the temperature sensor via a voltage divider connection, and the temperature voltage divider resistor and the voltage divider capacitor are connected in parallel. The microcontroller is connected to the temperature voltage divider resistor through a voltage sampling circuit.

[0027] For example, the temperature detection and protection circuit consists of U1 (microcontroller), PTC (temperature sensor), and R30, C23. The temperature sensor used is a sensor with a nominal resistance of 10.0kΩ at 25℃.

[0028] When the temperature is below 1℃, the resistance of the PTC will increase as the temperature decreases. After voltage division with R30, pin 11 of U1 will sample the voltage and then control the water pump to stop working through pin 2.

[0029] When the temperature is above 1℃, the resistance of the PTC will decrease as the temperature decreases. After voltage division with R30, pin 11 of U1 will sample the voltage and then control the water pump to start working through pin 2.

[0030] The water cleanliness detection circuit includes a turbidity sensor, an operational amplifier, and an electrically erasable programmable read-only memory (EROM). The EROM is connected to the microcontroller, and the turbidity sensor is connected to the microcontroller through the operational amplifier.

[0031] For example, first, set the calibration point: using a clear water source, put JP3 (turbidity sensor) into the water, input the duty cycle of the "PWM signal" to R16 and R17 through pin 5 of U1, compare it through U2, and output the control Q2 to work through pin 1 until the output PB4 of sensor JP3 is 3.8V. Then save the duty cycle of this "PWM signal" through U3 as the calibration point.

[0032] Real-time measurement: When the water in the bathtub is cloudy, the voltage value of the output PB4 of the sensor JP3 is compared with the calibration point voltage value. If it is greater than the threshold we set, the D2 and D6 are simultaneously controlled by pins 10 and 13 of the U1 microcontroller to flash yellow to remind the user to change the bathtub water.

[0033] When light passes through the water in the bird bath tub, the light intensity signal is received by the phototransistor of JP3 (turbidity sensor), converted into an analog signal output. The output electrical signal varies depending on the clarity of the liquid, thus providing a warning to remind the user to change the water.

[0034] Optionally, the water level metal probe is installed inside the water tank of the smart bird bath.

[0035] Optionally, the water cleanliness detection circuit further includes an indicator light, which is electrically connected to the microcontroller.

[0036] In one possible implementation, a circuit for preventing water pump dry running is also included. This circuit is connected to the microcontroller via electrical signals. The circuit includes a charging port, a reverse protection diode, a protection resistor, and a protection voltage divider resistor. The output of the charging port is connected to the input of the reverse protection diode. A protection resistor and a protection voltage divider resistor are provided at the output of the reverse protection diode. The microcontroller is connected to the protection voltage divider resistor via a voltage acquisition circuit.

[0037] For example, when the user is charging, the sealing sleeve is open. If water is sprayed at this time, water can easily splash onto the circuit board. Therefore, the water pump needs to be controlled to prevent water from spraying during charging.

[0038] The system consists of J13 (USB charging port), SS34 (reverse protection diode), resistors R1 and R2, and a U5 (charging management chip) along with peripheral circuitry. When the user charges the bird bath tub, the voltage is divided by SS34 and then by resistors R1 and R2. The microcontroller U1 samples the voltage through pin 9. If the voltage exceeds 2V, the water pump is stopped from spraying water.

[0039] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A control circuit for an intelligent bird bath tub, characterized in that, include: The system includes a microcontroller, a water level detection start-up circuit, a temperature detection protection circuit, a water pump, and a water cleanliness detection circuit, wherein the water level detection start-up circuit, the temperature detection protection circuit, the water pump, and the water cleanliness detection circuit are all connected to the microcontroller. The water level detection start-up circuit includes a capacitive sensing chip, a water level metal probe, and a MOS transistor. The microcontroller is electrically connected to the capacitive sensing chip, the capacitive sensing chip is electrically connected to the water level metal probe, and the microcontroller is connected to the water pump through the MOS transistor. The temperature detection and protection circuit includes a temperature sensor, a temperature voltage divider resistor, and a voltage divider capacitor. The temperature voltage divider resistor is connected to the temperature sensor via a voltage divider connection, and the temperature voltage divider resistor and the voltage divider capacitor are connected in parallel. The microcontroller is connected to the temperature voltage divider resistor through a voltage sampling circuit. The water cleanliness detection circuit includes a turbidity sensor, an operational amplifier, and an electrically erasable programmable read-only memory (EROM). The EROM is connected to the microcontroller, and the turbidity sensor is connected to the microcontroller through the operational amplifier.

2. The intelligent bird bath control circuit as described in claim 1, characterized in that, The temperature sensor is a sensor with a resistance of 10.0kΩ at 25℃.

3. The intelligent bird bath control circuit as described in claim 1, characterized in that, The water level metal probe is installed inside the water tank of the smart bird bath.

4. The intelligent bird bath control circuit as described in claim 1, characterized in that, The water cleanliness detection circuit also includes an indicator light, which is electrically connected to the microcontroller.

5. The intelligent bird bath control circuit as described in claim 1, characterized in that, It also includes a circuit to prevent the water pump from running dry. The circuit is connected to the microcontroller via electrical signals. The circuit includes a charging port, a reverse protection diode, a protection resistor, and a protection voltage divider resistor. The output of the charging port is connected to the input of the reverse protection diode. A protection resistor and a protection voltage divider resistor are provided at the output of the reverse protection diode. The microcontroller is connected to the protection voltage divider resistor through a voltage acquisition circuit.

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