A bird protection circuit

Abstract

This utility model relates to a bird protection circuit, belonging to the field of temperature control circuits. Temperature probes RT and RT1, along with chip U1, form a dual-channel temperature detection circuit. JP2, Q15, Q7, and Q14, Q8 form a dual-channel temperature heating control circuit. When the temperature changes, RT and R30 form a voltage divider circuit; the resistance of RT changes with temperature. The corresponding voltage divider value is then detected through pin PA3 of chip U1 to obtain the temperature of the first zone. RT1 and R28 form a voltage divider circuit; the resistance of RT1 changes with temperature. The corresponding voltage divider value is then detected through pin PA4 of chip U1 to obtain the temperature of the second zone. The average temperature is calculated by chip U1 to obtain the reference temperature of the enclosure. Based on the set start and stop heating temperatures, the dual-channel temperature heating control circuit, controlled by pins PB5 and PB8 of chip U1, controls Q15, Q7, and Q14, Q8 respectively, achieving precise constant temperature control of the enclosure.

Description

Technical Field

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

[0002] In bird husbandry, incubators are crucial for the survival of chicks or sick birds. However, existing bird incubators suffer from the following technical shortcomings in practical applications:

[0003] (1) Existing incubators cannot simultaneously meet the heating needs of both home and portable scenarios. In the home scenario, the power supply is stable but the heating speed is limited. When portable, the heating capacity is weak and the speed is slow due to the limited power supply method, making it difficult to quickly reach the suitable temperature required by birds, which affects the ease of use.

[0004] (2) Birds are extremely sensitive to temperature changes. Most existing incubators use a single temperature probe to detect the temperature inside the incubator, which results in a large temperature error. Because there are temperature differences in different areas of the incubator, a single probe cannot fully reflect the true temperature inside the incubator, leading to insufficient temperature control accuracy, which may cause stress reactions or even health problems in birds. Utility Model Content

[0005] To achieve the above objectives, the bird protection circuit provided by this utility model includes a first chip (U1), utilizing...

[0006] The first pin (PA3) is connected to the first probe (RT), and the first probe (RT) and the first resistor (R30) form the first voltage divider circuit;

[0007] The second pin (PA4) is connected to the second probe (RT1), and the second probe (RT1) and the second resistor (R28) form the second voltage divider circuit;

[0008] The third pin (HEAT1) and the fourth pin (HEAT2) are connected to a dual-channel temperature heating circuit, wherein the dual-channel temperature heating circuit includes:

[0009] The first heating element connected to the third pin (PB5) includes a series-connected MOSFET (Q8) and MOSFET (Q14).

[0010] The second heating element is connected to the fourth pin (PB8), and the second heating element includes a series MOSFET (Q7) and a MOSFET (Q15);

[0011] The first heating element and the second heating element are connected to the heating module (JP2).

[0012] Furthermore, in the first voltage divider circuit, the first resistor (R30) is connected in parallel with a capacitor (C23) and grounded, and the first probe (RT) is connected in series.

[0013] In the second voltage divider circuit, the second resistor (R28) is connected in parallel with a capacitor (C11) to ground, and the second probe (RT2) is connected in series.

[0014] Furthermore, the first chip (U1) utilizes a loop created with pin (PA0) and pin (PA1) to connect a humidity probe (RH) in series, and the humidity probe (RH) is connected in parallel with a resistor (R31).

[0015] Furthermore, the first heating element includes a heating signal connected to the HEAT1 pin of the third pin (PB5), which is connected to a MOSFET (Q8) via a resistor (R24), and then connected to a MOSFET (Q14) via the MOSFET (Q8). The third pin of the MOSFET (Q14) is connected to a resistor (R22) and connected to VBUSOUT1. The second pin of the MOSFET (Q14) is connected to pins 3 and 4 of the heating module (JP2).

[0016] Furthermore, the second heating element includes a heating signal connected to the HEAT2 pin of the fourth pin (PB8), which is connected to a MOSFET (Q7) via a resistor (R45), and then connected to a MOSFET (Q15) via the MOSFET (Q7). The third pin of the MOSFET (Q15) is connected to a resistor (R43) and then connected to VBUSOUT2. The second pin of the MOSFET (Q15) is connected to pins 1 and 2 of the heating module (JP2).

[0017] Furthermore, the bird protection circuit also includes a voltage detection circuit, which comprises:

[0018] The first input port (J6) is connected to the handshake signal of the chip (U9). The chip (U9) is connected to the chip (U3). Pin 3 of the chip (U3) is the voltage detection pin.

[0019] The second input port (J7) is connected to the hand-held signal of the chip (U6). The chip (U6) is connected to the chip (U5). The third pin of the chip (U5) is the voltage detection pin.

[0020] Furthermore, the chip (3) and the chip (U5) are respectively connected to diode (D9) and diode (D10); the diode (D9) and diode (D10) are connected to the first chip (U1).

[0021] Furthermore, pin 4 of the chip (U3) is connected to MOSFET (Q6), MOSFET (Q6) is connected to MOSFET (Q12), and MOSFET (Q12) is connected to diode (D9).

[0022] Furthermore, pin 4 of the chip (U5) is connected to MOSFET (Q5), MOSFET (Q5) is connected to MOSFET (Q4), and MOSFET (Q4) is connected to diode (D10).

[0023] The bird protection circuit provided by this utility model has the following beneficial effects:

[0024] 1. Powered by a dual-power fast charging protocol, the product's power is superimposed, perfectly solving the circuit design problem of the insulated box's rapid heating and strong heating capacity;

[0025] 2. The temperature of the chamber is detected by dual temperature probes, and then an algorithm and circuit design based on temperature difference comparison are used to completely solve the problem of insufficient temperature control in the insulation box. Attached Figure Description

[0026] Figure 1 This is a circuit diagram of a bird protection circuit in one embodiment of the present invention;

[0027] Figure 2 This is a circuit diagram of a bird protection circuit in another embodiment of the present invention;

[0028] Figure 3 This is a circuit diagram of the voltage detection circuit in a bird protection circuit according to one embodiment of this utility model.

[0029] 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

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] Reference Figure 1-2 The embodiments described in this specification can be used to illustrate the content of this utility model.

[0032] A bird protection circuit includes a first chip (U1), utilizing...

[0033] The first pin (PA3) is connected to the first probe (RT), and the first probe (RT) and the first resistor (R30) form the first voltage divider circuit;

[0034] The second pin (PA4) is connected to the second probe (RT1), and the second probe (RT1) and the second resistor (R28) form the second voltage divider circuit;

[0035] The third pin (HEAT1) and the fourth pin (HEAT2) are connected to a dual-channel temperature heating circuit, wherein the dual-channel temperature heating circuit includes:

[0036] The first heating element connected to the third pin (PB5) includes a series-connected MOSFET (Q8) and MOSFET (Q14).

[0037] The second heating element is connected to the fourth pin (PB8), and the second heating element includes a series MOSFET (Q7) and a MOSFET (Q15);

[0038] The first heating element and the second heating element are connected to the heating module (JP2).

[0039] Specifically, in the first voltage divider circuit, the first resistor (R30) is connected in parallel with the capacitor (C23) and grounded, and the first probe (RT) is connected in series.

[0040] In the second voltage divider circuit, the second resistor (R28) is connected in parallel with a capacitor (C11) to ground, and the second probe (RT2) is connected in series.

[0041] Specifically, the first chip (U1) uses a loop created by pins (PA0) and (PA1) to connect a humidity probe (RH) in series, and the humidity probe (RH) is connected in parallel with a resistor (R31).

[0042] Specifically, the first heating element includes a heating signal connected to the HEAT1 pin of the third pin (PB5), which is connected to a MOSFET (Q8) via a resistor (R24), and then connected to a MOSFET (Q14) via the MOSFET (Q8). The third pin of the MOSFET (Q14) is connected to a resistor (R22) and then connected to VBUSOUT1. The second pin of the MOSFET (Q14) is connected to pins 3 and 4 of the heating module (JP2).

[0043] Specifically, the second heating element includes a heating signal connected to HEAT2 of the fourth pin (PB8), which is connected to MOSFET (Q7) through a resistor (R45), and then connected to MOSFET (Q15) through MOSFET (Q7). The third pin of MOSFET (Q15) is connected to a resistor (R43) and then connected to VBUSOUT2. The second pin of MOSFET (Q15) is connected to pins 1 and 2 of the heating module (JP2).

[0044] Working principle:

[0045] Bird incubators require precise temperature control because different areas of the enclosure experience temperature variations. We employ a dual-probe system, placing sensors in different areas to collect temperature data, and then using a software algorithm to calculate the average value. The specific circuit design principle is as follows:

[0046] Temperature probes RT and RT1, along with chip U1, form a dual-channel temperature detection circuit. Pins 32 (heat2, JP2, Q15, Q7, Q14, Q8) form a dual-channel temperature heating control circuit. When the temperature changes, RT and R30 form a voltage divider circuit; RT's resistance changes with temperature. The corresponding voltage division value is detected by pin PA3 of chip U1, indicating the temperature of region 1. Similarly, RT1 and R28 form a voltage divider circuit; RT1's resistance changes with temperature. The corresponding voltage division value is detected by pin PA4 of chip U1, indicating the temperature of region 2. The software algorithm of chip U1 then calculates the average temperature of regions 1 and 2 to obtain a relatively balanced and accurate reference temperature for the enclosure. Based on the set start and stop heating temperatures, pins PB5 and PB8 of chip U1 control Q15, Q7, and Q14, Q8 respectively, forming the dual-channel temperature heating control circuit, achieving precise and constant temperature control for the enclosure.

[0047] Reference Appendix Figure 3 The present invention also proposes a voltage detection circuit for bird protection circuits, the voltage detection circuit comprising:

[0048] The first input port (J6) is connected to the handshake signal of the chip (U9). The chip (U9) is connected to the chip (U3). Pin 3 of the chip (U3) is the voltage detection pin.

[0049] The second input port (J7) is connected to the hand-held signal of the chip (U6). The chip (U6) is connected to the chip (U5). The third pin of the chip (U5) is the voltage detection pin.

[0050] Furthermore, the chip (3) and the chip (U5) are respectively connected to diode (D9) and diode (D10); the diode (D9) and diode (D10) are connected to the first chip (U1).

[0051] Specifically, pin 4 of the chip (U3) is connected to MOSFET (Q6), MOSFET (Q6) is connected to MOSFET (Q12), and MOSFET (Q12) is connected to diode (D9).

[0052] Specifically, pin 4 of the chip (U5) is connected to MOSFET (Q5), MOSFET (Q5) is connected to MOSFET (Q4), and MOSFET (Q4) is connected to diode (D10).

[0053] Working principle:

[0054] When Type-C is inserted into input ports J6 and J7, the D+, D-, and CC data signals of Type-C connect to chips U3 and U5. After handshaking and mating, the power supply is notified to output 15V / 3A to supply the board. The 5V LDOs of U6 and U9 provide power to U3 and U5 respectively. Pins 3 of U3 and U5 check if the input voltage (15V) is correct. If correct, the MOSFETs Q12 and Q4 at pins 4 of U3 and U5 are turned on to provide the operating voltage to the entire device. The output VBUS_OUT is provided to the main microcontroller via diodes D9 and D10 connected in parallel. This design allows the main microcontroller to start working as long as there is voltage input from either of the two Type-C inputs.

[0055] This circuit design allows it to support two fast-charging power inputs, achieving dual power superposition and doubling the heating power.

[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A bird protection circuit, characterized in that, Including the first chip U1, utilizing, The first pin PA3 is connected to the first probe RT, and the first probe RT and the first resistor R30 form the first voltage divider circuit. The second pin PA4 is connected to the second probe RT1, and the second probe RT1 and the second resistor R28 form the second voltage divider circuit. The third pin PB5 and the fourth pin PB8 are connected to a dual-channel temperature heating circuit, wherein the dual-channel temperature heating circuit includes: The first heating element is connected to the third pin PB5. The first heating element includes MOSFET Q8 and MOSFET Q14 connected in series. The second heating element is connected to the fourth pin PB8. The second heating element includes MOSFET Q7 and MOSFET Q15 connected in series. The first heating element and the second heating element are connected to the heating module JP2.

2. The bird protection circuit according to claim 1, characterized in that: In the first voltage divider circuit, the first resistor R30 is connected in parallel with capacitor C23 and grounded, and the first probe RT is connected in series. In the second voltage divider circuit, the second resistor R28 is connected in parallel with capacitor C11 and grounded, and the second probe RT1 is connected in series.

3. The bird protection circuit according to claim 1, characterized in that, The first chip U1 uses a loop created by pins PA0 and PA1 to connect a humidity probe RH in series, and the humidity probe RH is connected in parallel with resistor R31.

4. The bird protection circuit according to claim 1, characterized in that, The first heating element includes a heating signal input to the HEAT1 pin of the third pin PB5, which is connected to MOSFET Q8 via resistor R24. MOSFET Q8 is connected to MOSFET Q14. The third pin of MOSFET Q14 is connected to resistor R22 and then to VBUSOUT1. The second pin of MOSFET Q14 is connected to pins 3 and 4 of heating module JP2.

5. The bird protection circuit according to claim 1, characterized in that, The second heating element includes a heating signal input to the HEAT2 pin of the fourth pin PB8, which is connected to MOSFET Q7 via resistor R45. MOSFET Q7 is connected to MOSFET Q15. The third pin of MOSFET Q15 is connected to resistor R43 and then to VBUSOUT2. The second pin of MOSFET Q15 is connected to pins 1 and 2 of heating module JP2.

6. The bird protection circuit according to claim 1, characterized in that, It also includes a voltage detection circuit, which comprises: The first input port J6 is connected to the handshake signal of the chip U9. The chip U9 is connected to the chip U3. Pin 3 of the chip U3 is the voltage detection pin. The second input port J7 is connected to the hand-warming signal of chip U6. Chip U6 is connected to chip U5. Pin 3 of chip U5 is the voltage detection pin. Furthermore, chip 3 and chip U5 are respectively connected to diode D9 and diode D10; diode D9 and diode D10 are connected to the first chip U1.

7. The bird protection circuit according to claim 6, characterized in that, Pin 4 of chip U3 is connected to MOSFET Q6, MOSFET Q6 is connected to MOSFET Q12, and MOSFET Q12 is connected to diode D9.

8. The bird protection circuit according to claim 6, characterized in that, Pin 4 of chip U5 is connected to MOSFET Q5, MOSFET Q5 is connected to MOSFET Q4, and MOSFET Q4 is connected to diode D10.

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