Self-service pet washing control circuit

Abstract

The utility model discloses a self-service pet washing control circuit, and relates to the technical field of pet bathing control circuits. Comprising a main control circuit, a power supply circuit, a communication circuit, a large relay control output circuit and a small relay control output circuit, wherein the main control circuit, the communication circuit, the large relay control output circuit and the small relay control output circuit are electrically connected with the power supply circuit respectively; the communication circuit, the large relay control output circuit and the small relay control output circuit are respectively in communication connection with the main control circuit; the circuit provided by the utility model can support high-power electric equipment, and the output uses optical coupler isolation, thereby effectively protecting the normal operation of a main control chip; in order to avoid the situation that when the blower and the water heater are started at the same time, the power of the whole machine is too large, the water heater is possibly damaged, a large relay is additionally used for controlling the water heater, hot water is cut off when the blower is started, and the water heater is turned on 30 seconds after the blower is closed while frequent starting and stopping are prevented.

Description

Technical Field

[0001] This utility model relates to the field of pet bathing control circuit technology, specifically a self-service pet bathing control circuit. Background Technology

[0002] Pets are animals kept by people for emotional reasons rather than economic reasons. Pet bathing is an important part of pet care. Scientific and correct bathing methods can keep pets clean, prevent diseases, and enhance the bond between the pet and its owner. Currently, most people bathe their pets at home or take them to a pet store. Bathing at home usually requires more space and water, which is especially inconvenient when handling large dogs. Pet stores require appointments and waiting in line for manual cleaning, resulting in low service efficiency, not being open 24 hours a day, and relatively expensive prices.

[0003] Currently, some self-service pet grooming shops have emerged on the market, but the equipment they use is still ordinary pet bathing equipment. Most pet owners do not have the professional operating skills, resulting in a poor user experience. In some cases, the noise from the water pipes may cause stress to the pets, and the water flow may be unstable or even wet the owner. Utility Model Content

[0004] The purpose of this invention is to provide a self-service pet washing control circuit to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A self-service pet washing control circuit includes a main control circuit, a power supply circuit, a communication circuit, a large relay control output circuit, and a small relay control output circuit.

[0007] The main control circuit, communication circuit, large relay control output circuit, and small relay control output circuit are all electrically connected to the power supply circuit; the communication circuit, large relay control output circuit, and small relay control output circuit are all communicatively connected to the main control circuit.

[0008] The main control circuit includes a main control chip IC3;

[0009] The large relay control output circuit includes several first optocouplers and a large relay, and the small relay control output circuit includes several second optocouplers and a small relay.

[0010] Furthermore, interface 1 of the first optocoupler is connected to the main control chip IC3 through a resistor, interface 2 of the first optocoupler is grounded, interface 4 of the first optocoupler is connected to the VCC5V terminal through a resistor, and interface 3 of the first optocoupler is connected to the VCC5V terminal through a transistor, an LED, and a resistor; interface 2 of the large relay is connected to the 12_VCC terminal through a diode and a resistor, and interface 4 of the large relay is connected to an external connector.

[0011] Furthermore, interface 1 of the second optocoupler is connected to the main control chip IC3 through a resistor, interface 2 of the second optocoupler is grounded, interface 4 of the second optocoupler is connected to the VCC 5V terminal through a resistor, interface 3 of the second optocoupler is connected to a small relay through a transistor; interface 4 of the small relay is connected to the VCC 12V terminal, interface 3 of the small relay is connected to a connector, and interface 1 of the small relay is connected to the VCC 12V terminal through a diode and a resistor.

[0012] Furthermore, the power supply circuit includes a connector P1, a power chip IC1, and a voltage regulator IC2;

[0013] The power chip IC1 is electrically connected between the connector P1 and the voltage regulator IC2. The power chip IC1 and the connector P1 are externally connected to the VCC12V terminal and the 12_VCC terminal. The power chip IC1 and the voltage regulator IC2 are externally connected to the 5VO terminal, the VCC33 terminal and the main control chip_VCC terminal.

[0014] Furthermore, the communication circuit includes communication chip IC5, communication chip IC6, and switch SW1;

[0015] The communication chip IC5 has its interface 1 connected to the RXD1_1 terminal, its interface 2 connected to the RE1 terminal, and its interface 3 connected between its interface 2 and the RE1 terminal. Its interface 4 is connected to the TXD1_1 terminal. Its interface 5 is grounded. Its interface 6, resistor R13, Zener diodes DW2 and DW1, resistor R11, and interface 7 are connected in series. Resistor R13 and Zener diode... The 485_A1 terminal is connected between DW2, the 485_B1 terminal is connected between the Zener diode DW1 and resistor R11, the resistor R14 is connected between the 6th interface of the communication chip IC5 and resistor R13, and the resistor R14 is connected to the VCC5V terminal, the resistor R10 is connected between the 7th interface of the communication chip IC5 and resistor R11, and the resistor R10 is connected to the VCC5V terminal through capacitor C22, the 8th interface of the communication chip IC5 is electrically connected between capacitor C22 and the VCC5V terminal, and the resistor R10 and capacitor C22 are grounded.

[0016] The RXD1_1 terminal is electrically connected to the RX1 terminal via diode D5. The RX1 terminal is electrically connected to interface 22 of the main control chip IC3. An external resistor R12 is connected between diode D5 and the RX1 terminal, and resistor R12 is externally connected to the RXD1_2 terminal. The TXD1_1 terminal is electrically connected to the TX1 terminal via diode D6. The TX1 terminal is electrically connected to interface 21 of the main control chip IC3. An external resistor R15 is connected between diode D6 and the TX1 terminal, and resistor R15 is externally connected to the TXD1_2 terminal.

[0017] The RXD1_2 terminal is electrically connected to interface 12 of communication chip IC6, the TXD1_2 terminal is electrically connected to interface 11 of communication chip IC6, interface 9 of communication chip IC6 is externally connected to the RX2 terminal, interface 10 of communication chip IC6 is externally connected to the TX2 terminal, the RX2 terminal is electrically connected to interface 13 of main control chip IC3, and the TX2 terminal is electrically connected to interface 12 of main control chip IC3.

[0018] The 13 interface of the communication chip IC6 is externally connected to the 232_TX1 terminal through resistor R16; the 14 interface of the communication chip IC6 is externally connected to the 232_RX1 terminal through resistor R18; the 8 interface of the communication chip IC6 is externally connected to the 232_TX2 terminal through resistor R19; and the 7 interface of the communication chip IC6 is externally connected to the 232_RX2 terminal through resistor R20.

[0019] The 1st interface of the switch SW1 is connected to the 232_RX1 terminal, the 4th interface of the switch SW1 is connected to the 232_TX1 terminal, the 3rd interface of the switch SW1 is connected to the 485_A1 terminal, and the 6th interface of the switch SW1 is connected to the 485_B1 terminal.

[0020] Furthermore, it also includes a power statistics circuit, which includes a power parameter acquisition chip IC7, an optocoupler IC8, a voltage transformer CT1, a current transformer CT2, and a connector P13.

[0021] The voltage transformer CT1 is electrically connected to interface 4 of the power parameter acquisition chip IC7 via the VP terminal, the current transformer CT2 is electrically connected to interface 2 of the power parameter acquisition chip IC7 via the IP terminal, and the current transformer CT2 is electrically connected to interface 3 of the power parameter acquisition chip IC7 via the IN terminal.

[0022] Furthermore, it also includes a liquid level detection circuit, which includes an NPN liquid level sensor and several optocouplers. The input pin of the NPN liquid level sensor is electrically connected to the main control chip IC3 through the optocouplers.

[0023] Furthermore, it also includes a pause button detection circuit, which includes a connector P2;

[0024] The connector P2's 2nd interface, resistor R3, and capacitor C20 are connected in series. The capacitor C20 is grounded. The connector P2's 2nd interface and resistor R3 are connected to the IRIN0 terminal, and the resistor R3 and capacitor C20 are connected to the Door terminal.

[0025] The IRIN0 terminal, resistor R7, resistor R6 and VCC33 terminal are connected in series, and the Door terminal is electrically connected to the 28 interface of the main control chip IC3.

[0026] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0027] The circuit in this invention supports high-power electrical equipment; it controls high-speed airflow, low-speed airflow, and water heater outputs. The high-speed and low-speed airflow controls the hair dryer used to dry pets, and the outputs use optocoupler isolation to effectively protect the main control chip. To prevent damage to the circuit due to excessive power consumption when the hair dryer and water heater are on simultaneously, a large relay controls the water heater. The hot water is disconnected when the hair dryer is turned on, and reconnected 30 seconds after the hair dryer is turned off, preventing frequent start-stop cycles. This design is user-friendly, requiring minimal expertise or skill for pet washing. The actual user experience of the equipment is better. In practical applications, this circuit needs to be installed in specific equipment, such as a water heater, hair dryer, water inlet valve, and four pumps for extracting shampoo and conditioner. These devices need to be wired to this circuit board and communicate with a host computer via RS-232 or RS-485. The host computer's application sends protocols to this circuit. The washing and rinsing equipment controlled and processed by this circuit can be used 24 hours a day, which is convenient and convenient. There is no need to queue at a pet store, which is highly efficient. Self-service pet washing reduces contact between pets and strangers, which can effectively reduce the pet's stress response. Moreover, the cost is lower than going to a pet store, making it more cost-effective. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is the overall circuit block diagram of this utility model;

[0030] Figure 2 This is a circuit diagram of the main control circuit of this utility model;

[0031] Figure 3 This is a circuit diagram of the power supply circuit of this utility model;

[0032] Figure 4 This is a circuit diagram of the communication circuit of this utility model;

[0033] Figure 5 This is a circuit diagram of the large relay control output circuit of this utility model;

[0034] Figure 6 This is a circuit diagram of the small relay control output circuit of this utility model;

[0035] Figure 7 This is a circuit diagram of the power counting circuit of this utility model;

[0036] Figure 8 This is a circuit diagram of the liquid balance detection circuit of this utility model;

[0037] Figure 9 This is a circuit diagram of the pause button detection circuit of this utility model;

[0038] In the diagram: 1. Main control circuit; 2. Power supply circuit; 3. Communication circuit; 4. Large relay control output circuit; 5. Small relay control output circuit; 6. Power statistics circuit; 7. Washing liquid remaining detection circuit; 8. Pause button detection circuit. Detailed Implementation

[0039] 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.

[0040] like Figures 1-9 As shown, this utility model provides a technical solution: a self-service pet washing control circuit, including a main control circuit 1, a power supply circuit 2, a communication circuit 3, a large relay control output circuit 4, and a small relay control output circuit 5. The main control circuit 1, communication circuit 3, large relay control output circuit 4, and small relay control output circuit 5 are all electrically connected to the power supply circuit 2. The communication circuit 3, large relay control output circuit 4, and small relay control output circuit 5 are all communicatively connected to the main control circuit 1. The main control circuit 1 includes a main control chip IC 3. The large relay control output circuit 4 includes several first optocouplers and a large relay, and the small relay control output circuit 5 includes several second optocouplers and a small relay.

[0041] In one embodiment, such as Figure 5 As shown: the first optocoupler includes optocoupler IC9, optocoupler IC10 and optocoupler IC11; the large relay includes relay K1, relay K2 and relay K3;

[0042] The optocoupler IC9 has its interface 1 connected to the REF_2 terminal via resistor R41. The REF_2 terminal is connected to the interface 20 of the main control chip IC3. The optocoupler IC9's interface 2 is grounded. The optocoupler IC9's interface 4 is connected to the VCC5V terminal via resistor R42. The optocoupler IC9's interface 3, the base of transistor Q2, the collector of transistor Q2, LED2, and resistor R39 are connected in series. Resistor R39 is connected to the VCC5V terminal. The emitter of transistor Q2 is grounded. The relay K1 has its interface 1 connected to the 12_VCC terminal. The relay K1's interface 2, diode D7, and resistor R40 are connected in series. Resistor R40 is connected to the 12_VCC terminal. The relay K1's interface 4 is connected to the YJ2_OUT terminal. The relay K1's interface 5 is connected to the SW2_LiIN terminal. The YJ2_OUT terminal is connected to connector P23.

[0043] The optocoupler IC10 has its interface 1 connected to the DEF terminal via resistor R45. The DEF terminal is connected to interface 11 of the main control chip IC3. The optocoupler IC10's interface 2 is grounded. The optocoupler IC10's interface 4 is connected to the VCC5V terminal via resistor R46. The optocoupler IC10's interface 3, the base of transistor Q3, the collector of transistor Q3, LED3, and resistor R43 are connected in series. Resistor R43 is connected to the VCC5V terminal. The emitter of transistor Q3 is grounded. The relay K2 has its interface 1 connected to the 12_VCC terminal. The relay K2's interface 2, diode D8, and resistor R44 are connected in series. Resistor R44 is connected to the 12_VCC terminal. The relay K2's interface 4 is connected to the HS_OUT terminal. The relay K2's interface 5 is connected to the SW2_LiIN terminal. The HS_OUT terminal is connected to connector P24.

[0044] The optocoupler IC11 has its interface 1 connected to the REF1 terminal via resistor R49. The REF1 terminal is connected to the interface 10 of the main control chip IC3. The optocoupler IC11's interface 2 is grounded. The optocoupler IC11's interface 4 is connected to the VCC5V terminal via resistor R50. The optocoupler IC11's interface 3, the base of transistor Q4, the collector of transistor Q4, LED4, and resistor R47 are connected in series. Resistor R47 is connected to the VCC5V terminal. The emitter of transistor Q4 is grounded. The relay K3 has its interface 1 connected to the 12_VCC terminal. The relay K3's interface 2, diode D9, and resistor R48 are connected in series. Resistor R48 is connected to the 12_VCC terminal. The relay K3's interface 4 is connected to the ZYJ_OUT terminal. The relay K1's interface 5 is connected to the SW2_LiIN terminal. The ZYJ_OUT terminal is connected to connector P25.

[0045] In one embodiment, such as Figure 6 As shown: The second optocoupler includes optocoupler IC12, optocoupler IC13, optocoupler IC14, optocoupler IC15, optocoupler IC16, optocoupler IC17, optocoupler IC18 and optocoupler IC19; the small relays include relays RLY1, RLY2, RLY3, RLY4, RLY5, RLY6, RLY7 and RLY8;

[0046] The first interface of the optocoupler IC12 is connected to the ColdFan_B terminal via resistor R51. The second interface of the optocoupler IC12 is grounded. The fourth interface of the optocoupler IC12 is connected to the VCC5V terminal via resistor R52. The third interface of the optocoupler IC12, the base of transistor Q5, the collector of transistor Q5, and the Ctr_OJ5 terminal are connected in series. The emitter of transistor Q5 is grounded. The fourth interface of the relay RLY1 is connected to the 1V terminal. 2_VCC terminal, the 3rd interface of relay RLY1 is externally connected to the LNBOut terminal, the 2nd interface of relay PLY1 is externally connected to the VCC12V terminal, the 1st interface of relay PLY1, diode D10, resistor R53 and VCC12V terminal are connected in series, the ColdFan_B terminal is connected to the 4th interface of the main control chip IC3, the LNBOut terminal is externally connected to connector P26; the Ctr_OJ5 terminal is connected between the 1st interface of relay PLY1 and diode D10;

[0047] The first interface of the optocoupler IC13 is connected to the ColdFan_A terminal via resistor R54. The second interface of the optocoupler IC13 is grounded. The fourth interface of the optocoupler IC13 is connected to the VCC5V terminal via resistor R55. The third interface of the optocoupler IC13, the base of transistor Q6, the collector of transistor Q6, and the Ctr_OJ6 terminal are connected in series. The emitter of transistor Q6 is grounded. The fourth interface of the relay RLY2 is connected to SW. 2_LiIN terminal, the 3rd interface of relay RLY2 is externally connected to LNAOut terminal, the 2nd interface of relay PLY2 is externally connected to VCC12V terminal, the 1st interface of relay PLY2, diode D11, resistor R56 and VCC12V terminal are connected in series, the ColdFan_A terminal is connected to the 3rd interface of main control chip IC3, the LNAOut terminal is externally connected to connector P28; the Ctr_OJ6 terminal is connected between the 1st interface of relay PLY2 and diode D11;

[0048] The optocoupler IC14 has its interface 1 connected to the LightRelay terminal via resistor R57. Interface 2 of the optocoupler IC14 is grounded. Interface 4 of the optocoupler IC14 is connected to the VCC5V terminal via resistor R58. Interface 3 of the optocoupler IC14, the base of transistor Q7, the collector of transistor Q7, and the Ctr_OJ7 terminal are connected in series. The emitter of transistor Q7 is grounded. Interface 4 of the relay RLY3 is connected to the SW2_LiIN terminal. Interface 3 of the relay RLY3 is connected to the LightOut terminal. Interface 2 of the relay PLY3 is connected to the VCC12V terminal. Interface 1 of the relay PLY3, diode D12, resistor R59, and the VCC12V terminal are connected in series. The LightRelay terminal is connected to interface 2 of the main control chip IC3. The LightOut terminal is connected to connector P30. The Ctr_OJ7 terminal is connected between interface 1 of the relay PLY3 and diode D12.

[0049] The first interface of the optocoupler IC15 is connected to the HotGlass terminal via resistor R60. The second interface of the optocoupler IC15 is grounded. The fourth interface of the optocoupler IC15 is connected to the VCC5V terminal via resistor R61. The third interface of the optocoupler IC15, the base of transistor Q8, the collector of transistor Q8, and the Ctr_OJ8 terminal are connected in series. The emitter of transistor Q8 is grounded. The fourth interface of the relay RLY4 is connected to SW2. The _LiIN terminal is connected to the CW_Out terminal via the 3rd interface of the relay RLY4, and the VCC12V terminal via the 2nd interface of the relay PLY4. The 1st interface of the relay PLY4, diode D13, resistor R62, and VCC12V terminal are connected in series. The HotGlass terminal is connected to the 46th interface of the main control chip IC3. The CW_Out terminal is connected to the connector P31. The Ctr_OJ8 terminal is connected between the 1st interface of the relay PLY4 and diode D13.

[0050] The first interface of the optocoupler IC16 is connected to the EvaporatorFan terminal via resistor R63. The second interface of the optocoupler IC16 is grounded. The fourth interface of the optocoupler IC16 is connected to the VCC5V terminal via resistor R64. The third interface of the optocoupler IC16, the base of transistor Q9, the collector of transistor Q9, and the Ctr_OJ9 terminal are connected in series. The emitter of transistor Q9 is grounded. The fourth interface of the relay RLY5 is connected to SW2_Li. The IN terminal of relay RLY5 is connected to the ZFQfanOut terminal via its 3rd interface, and the 2nd interface of relay PLY5 is connected to the VCC12V terminal. The 1st interface of relay PLY5, diode D14, resistor R65, and VCC12V terminal are connected in series. The EvaporatorFan terminal is connected to the 45th interface of the main control chip IC3. The ZFQfanOut terminal is connected to connector P32. The Ctr_OJ9 terminal is connected between the 1st interface of relay PLY5 and diode D14.

[0051] The optocoupler IC17 has its interface 1 connected to the WaterHeat terminal via resistor R66. Interface 2 of the optocoupler IC17 is grounded. Interface 4 of the optocoupler IC17 is connected to the VCC5V terminal via resistor R67. Interface 3 of the optocoupler IC17, the base of transistor Q10, the collector of transistor Q10, and the Ctr_OJ10 terminal are connected in series. The emitter of transistor Q10 is grounded. Interface 4 of the relay RLY6 is connected to the SJRIN terminal. The relay RLY6 has its 3rd interface connected to the SJROut terminal, its 2nd interface connected to the VCC12V terminal, its 1st interface, diode D15, resistor R68, and VCC12V terminal connected in series, its WaterHeat terminal connected to its 43rd interface of the main control chip IC3, its SJRIN terminal connected to connector P33, its SJROut terminal connected to connector P34, and its Ctr_OJ10 terminal connected between its 1st interface and diode D15.

[0052] The optocoupler IC18 has its interface 1 connected to the relay7 terminal via resistor R91. Interface 2 of the optocoupler IC18 is grounded. Interface 4 of the optocoupler IC18 is connected to the VCC5V terminal via resistor R92. Interface 3 of the optocoupler IC18, the base of transistor Q11, the collector of transistor Q11, and the Ctr_OJ11 terminal are connected in series. The emitter of transistor Q11 is grounded. Interface 4 of the relay RLY7 is connected to the RIN7 terminal. The RLY7 relay's 3rd interface is externally connected to the ROut7 terminal, the PLY7 relay's 2nd interface is externally connected to the VCC12V terminal, the PLY7 relay's 1st interface, diode D16, resistor R93, and VCC12V terminal are connected in series, the relay7 terminal is connected to the main control chip IC3's 40th interface, the RIN7 terminal is externally connected to connector P38, and the ROut7 terminal is externally connected to connector P37; the Ctr_OJ11 terminal is connected between the PLY6 relay's 1st interface and diode D16.

[0053] The optocoupler IC19 has its interface 1 connected to the relay8 terminal via resistor R94. Interface 2 of the optocoupler IC19 is grounded. Interface 4 of the optocoupler IC19 is connected to the VCC5V terminal via resistor R95. Interface 3 of the optocoupler IC19, the base of transistor Q12, the collector of transistor Q12, and the Ctr_OJ12 terminal are connected in series. The emitter of transistor Q12 is grounded. Interface 4 of the relay RLY8 is connected to the RIN8 terminal, and interface 3 of the relay RLY8 is connected to ROU. At terminal t8, the 2nd interface of relay PLY8 is externally connected to the VCC12V terminal. The 1st interface of relay PLY8, diode D17, resistor R96, and VCC12V terminal are connected in series. Terminal relay8 is connected to the 39th interface of the main control chip IC3. Terminal RIN8 is externally connected to connector P40, and terminal ROut8 is externally connected to connector P39. Terminal Ctr_OJ12 is connected between the 1st interface of relay PLY6 and diode D17. Resistor R26 is connected between the 3rd interface of relay PLY6 and the 3rd interface of relay PLY6.

[0054] In one embodiment, such as Figure 3 As shown: The power supply circuit 2 includes a connector P1, a power chip IC1, and a voltage regulator IC2. The power chip IC1 is electrically connected between the connector P1 and the voltage regulator IC2. The power chip IC1 and the connector P1 are externally connected to the VCC12V terminal and the 12V_VCC terminal. The power chip IC1 and the voltage regulator IC2 are externally connected to the 5VO terminal, the VCC33 terminal, and the main control chip_VCC terminal. The specific pin connections are as follows... Figure 3 As shown.

[0055] In one embodiment, such as Figure 4 As shown: The communication circuit 3 includes communication chip IC5, communication chip IC6, and switch SW1;

[0056] The communication chip IC5 has its interface 1 connected to the RXD1_1 terminal, its interface 2 connected to the RE1 terminal, and its interface 3 connected between its interface 2 and the RE1 terminal. Its interface 4 is connected to the TXD1_1 terminal. Its interface 5 is grounded. Its interface 6, resistor R13, Zener diodes DW2 and DW1, resistor R11, and interface 7 are connected in series. Resistor R13 and Zener diode... The 485_A1 terminal is connected between DW2, the 485_B1 terminal is connected between the Zener diode DW1 and resistor R11, the resistor R14 is connected between the 6th interface of the communication chip IC5 and resistor R13, and the resistor R14 is connected to the VCC5V terminal, the resistor R10 is connected between the 7th interface of the communication chip IC5 and resistor R11, and the resistor R10 is connected to the VCC5V terminal through capacitor C22, the 8th interface of the communication chip IC5 is electrically connected between capacitor C22 and the VCC5V terminal, and the resistor R10 and capacitor C22 are grounded.

[0057] The RXD1_1 terminal is electrically connected to the RX1 terminal via diode D5. The RX1 terminal is electrically connected to interface 22 of the main control chip IC3. An external resistor R12 is connected between diode D5 and the RX1 terminal, and resistor R12 is externally connected to the RXD1_2 terminal. The TXD1_1 terminal is electrically connected to the TX1 terminal via diode D6. The TX1 terminal is electrically connected to interface 21 of the main control chip IC3. An external resistor R15 is connected between diode D6 and the TX1 terminal, and resistor R15 is externally connected to the TXD1_2 terminal. The RXD1_2 terminal is electrically connected to interface 12 of the communication chip IC6. The TXD1_2 terminal is electrically connected to interface 11 of the communication chip IC6. Interface 9 of the communication chip IC6 is externally connected to the RX2 terminal. Interface 10 of the communication chip IC6 is externally connected to the TX2 terminal. The RX2 terminal is electrically connected to interface 13 of the main control chip IC3. The TX2 terminal is electrically connected to interface 12 of the main control chip IC3.

[0058] The communication chip IC6 has its interface 13 connected to the 232_TX1 terminal via resistor R16, and its interface 14 connected to the 232_RX1 terminal via resistor R18; its interface 8 connected to the 232_TX2 terminal via resistor R19, and its interface 7 connected to the 232_RX2 terminal via resistor R20; the switch SW1 has its interface 1 connected to the 232_RX1 terminal, its interface 4 connected to the 232_TX1 terminal, its interface 3 connected to the 485_A1 terminal, and its interface 6 connected to the 485_B1 terminal.

[0059] In one embodiment, such as Figure 1 and 7 As shown: It also includes a power statistics circuit 6, which includes a power parameter acquisition chip IC7, an optocoupler IC8, a voltage transformer CT1, a current transformer CT2, and a connector P13; the voltage transformer CT1 is electrically connected to interface 4 of the power parameter acquisition chip IC7 through the VP terminal, the current transformer CT2 is electrically connected to interface 2 of the power parameter acquisition chip IC7 through the IP terminal, and the current transformer CT2 is electrically connected to interface 3 of the power parameter acquisition chip IC7 through the IN terminal.

[0060] In one embodiment, such as Figure 1 and 8 As shown, this utility model also includes a liquid level detection circuit 7, comprising an NPN type liquid level sensor and several optocouplers. The input pin of the NPN type liquid level sensor is electrically connected to the main control chip IC3 through the optocouplers. The specific connection pins are as follows: Figure 8 As shown.

[0061] In one embodiment, such as Figure 1 and 9 As shown, this utility model also includes a pause button detection circuit 8, which includes a connector P2; the 2 interface of the connector P2, the resistor R3 and the capacitor C20 are connected in series, the capacitor C20 is grounded, the IRIN0 terminal is externally connected between the 2 interface of the connector P2 and the resistor R3, and the Door terminal is externally connected between the resistor R3 and the capacitor C20; the IRIN0 terminal, the resistor R7, the resistor R6 and the VCC33 terminal are connected in series, and the Door terminal is electrically connected to the 28 interface of the main control chip IC3.

[0062] Specific working principle:

[0063] The circuit in this utility model is configured with a main control circuit 1, a power supply circuit 2, a communication circuit 3, a large relay control output circuit 4, and a small relay control output circuit 5.

[0064] In power supply circuit 2, this invention requires 12V, 5V, and 3.3V power supplies: 12V supplies the two relays, liquid level sensor, and other devices in this invention, and is converted to other voltages; 5V supplies various components in this invention, such as the RS485 chip, power statistics chip, and optocoupler; 3.3V supplies the main control chip and RS232 chips; the 12V input power in this invention passes through a varistor and a transient suppression diode to protect the device from damage caused by instantaneous high current and overvoltage; the unidirectional conduction characteristic of the dual diodes prevents the power adapter from burning out due to reverse power connection; the LM2596-5 DC / DC converter chip is used to convert the 12V to 5V in this invention. This solution has low additional heat generation, high conversion efficiency, and the output is filtered by a large capacitor to obtain a relatively clean power supply; the 5V is converted to an LDO (low dropout voltage) via an AMS1117. The regulator (low dropout linear regulator) is converted to 3.3V. This solution differs from the above DC / DC in that the required voltage drop is smaller, the output ripple is smaller, the output method is simpler, and it can meet the needs of low current devices. The power supplies of different voltages are connected to the various sub-circuits in this utility model through PCB traces.

[0065] Main control circuit 1: The main control chip in this invention is GD32F103CBT6, which operates at a frequency of 108 MHz, has strong computing power, and low power consumption. This design connects the chip's I / O ports to components and peripherals, and writes programs to burn firmware, enabling the self-service pet washing machine system to operate stably and efficiently. An MB85RC16PNF-G-JNERE1 storage chip is used to record user data and store power information.

[0066] Communication Circuit 3: The communication circuit is the main channel for this invention to interact with other smart devices (such as Android boards or Windows motherboards). It uses the serial port (short for serial interface) of the main control chip and sets the transmission rate to 9600bit / s. The communication port of this communication circuit can switch between RS232 and RS485 at will, matching the selection according to different usage environments. The circuit uses MAX232 and MAX3485 chips (chip models) to convert TTL level to RS232 or RS485 signals, improving communication stability and anti-interference ability. Among them, RS485 has a longer transmission distance and can realize one-to-many communication. This communication module is connected to the main control chip of this system through TTL signal PCB traces.

[0067] Power consumption statistics circuit 6: This circuit has the function of detecting the voltage and current of the entire machine, and can count the total power consumption of the self-service pet washing machine; it adopts the CT2GTA20L current statistics chip, which can support high current detection, providing ample conditions for devices with high-power peripherals such as integrated water heaters and hair dryers; the through-type current sensor achieves electrical isolation, which is safe and reliable; the voltage transformer uses ZMPT107, which is also electrically isolated and safe and reliable; the current transformer and voltage transformer input the measurement data to the HLW8032 power parameter acquisition chip, and after data integration and power consumption statistics, it is sent to the main control chip through the serial port; this power consumption statistics module is connected to the main control circuit of this system through TTL serial port signal PCB traces.

[0068] The liquid level detection circuit 7: The input pin of the liquid level sensor is optocoupled by an EL0631 (TA) to enable the main control chip to obtain a higher voltage signal, thus isolating and protecting the main control chip from damage caused by the sensor voltage or current surge; This measurement and statistics module is connected to the main control circuit of this system through IO port PCB traces.

[0069] Large relay control output circuit 4: Supports high-power electrical equipment; includes high-speed fan, low-speed fan, and water heater control outputs; controls the high-speed and low-speed fan for drying pets, with optocoupler isolation for effective protection of the main control chip; to prevent damage to the circuit due to excessive power consumption when the fan and water heater are on simultaneously, an additional large relay controls the water heater, disconnecting the hot water when the fan is on and reconnecting it 30 seconds after the fan is off, preventing frequent start-stop cycles; user-friendly operation, requiring minimal technical expertise and experience, resulting in a better user experience for pet washing equipment; this control output module connects to the main control module of the system via IO port PCB traces.

[0070] Small relay control output circuit 5: controls the DC12V water valve, four AC220V shampoo pulse pumps, and three reserved ones respectively; it also uses optocoupler electrical isolation; this control output module is connected to the main control module of this system through IO port PCB traces;

[0071] Pause button detection circuit 8: The main control chip directly detects the input IO, and detects whether it is connected to the negative terminal, which is stable and reliable; an external physical button is connected so that when the user needs to pause while bathing the pet, he can press the button and then notify the host computer to stop the water or blower; this button detection module is connected to the main control module of this system through the IO port PCB trace.

[0072] In practical applications, this circuit needs to be installed in specific equipment, including a water heater, hair dryer, water inlet valve, and four pumps for extracting shampoo and conditioner. All of these components must be wired to this circuit board and communicate with a host computer via RS-232 or RS-485. The host computer's application sends protocols to this circuit. The shampooing equipment controlled by this circuit can be used 24 / 7, offering convenience and convenience. It eliminates the need to queue at pet stores, ensuring high efficiency. Self-service pet washing reduces contact between pets and strangers, effectively lowering stress levels in pets, and is less expensive than going to a pet store.

[0073] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-service pet washing control circuit, comprising a main control circuit (1), a power supply circuit (2), a communication circuit (3), a large relay control output circuit (4), and a small relay control output circuit (5), characterized in that: The main control circuit (1), communication circuit (3), large relay control output circuit (4) and small relay control output circuit (5) are all electrically connected to the power supply circuit (2); the communication circuit (3), large relay control output circuit (4) and small relay control output circuit (5) are all communicatively connected to the main control circuit (1). The main control circuit (1) includes a main control chip IC3; The large relay control output circuit (4) includes several first optocouplers and a large relay, and the small relay control output circuit (5) includes several second optocouplers and a small relay.

2. The self-service pet washing control circuit according to claim 1, characterized in that: The first optocoupler's interface 1 is connected to the main control chip IC3 through a resistor. The first optocoupler's interface 2 is grounded. The first optocoupler's interface 4 is connected to the VCC 5V terminal through a resistor. The first optocoupler's interface 3 is connected to the VCC 5V terminal through a transistor, an LED, and a resistor. The large relay's interface 2 is connected to the 12_VCC terminal through a diode and a resistor. The large relay's interface 4 is connected to an external connector.

3. The self-service pet washing control circuit according to claim 2, characterized in that: The second optocoupler's interface 1 is connected to the main control chip IC3 through a resistor. The second optocoupler's interface 2 is grounded. The second optocoupler's interface 4 is connected to the VCC 5V terminal through a resistor. The second optocoupler's interface 3 is connected to a small relay through a transistor. The small relay's interface 4 is connected to the VCC 12V terminal. The small relay's interface 3 is connected to a connector. The small relay's interface 1 is connected to the VCC 12V terminal through a diode and a resistor.

4. The self-service pet washing control circuit according to claim 3, characterized in that: The power supply circuit (2) includes a connector P1, a power chip IC1, and a voltage regulator IC2; The power chip IC1 is electrically connected between the connector P1 and the voltage regulator IC2. The power chip IC1 and the connector P1 are externally connected to the VCC12V terminal and the 12_VCC terminal. The power chip IC1 and the voltage regulator IC2 are externally connected to the 5VO terminal, the VCC33 terminal and the main control chip_VCC terminal.

5. The self-service pet washing control circuit according to claim 4, characterized in that: The communication circuit (3) includes communication chip IC5, communication chip IC6 and switch SW1; The communication chip IC5 has its interface 1 connected to the RXD1_1 terminal, its interface 2 connected to the RE1 terminal, and its interface 3 connected between its interface 2 and the RE1 terminal. Its interface 4 is connected to the TXD1_1 terminal. Its interface 5 is grounded. Its interface 6, resistor R13, Zener diodes DW2 and DW1, resistor R11, and interface 7 are connected in series. Resistor R13 and Zener diode... The 485_A1 terminal is connected between DW2, the 485_B1 terminal is connected between the Zener diode DW1 and resistor R11, the resistor R14 is connected between the 6th interface of the communication chip IC5 and resistor R13, and the resistor R14 is connected to the VCC5V terminal, the resistor R10 is connected between the 7th interface of the communication chip IC5 and resistor R11, and the resistor R10 is connected to the VCC5V terminal through capacitor C22, the 8th interface of the communication chip IC5 is electrically connected between capacitor C22 and the VCC5V terminal, and the resistor R10 and capacitor C22 are grounded. The RXD1_1 terminal is electrically connected to the RX1 terminal via diode D5. The RX1 terminal is electrically connected to interface 22 of the main control chip IC3. An external resistor R12 is connected between diode D5 and the RX1 terminal, and resistor R12 is externally connected to the RXD1_2 terminal. The TXD1_1 terminal is electrically connected to the TX1 terminal via diode D6. The TX1 terminal is electrically connected to interface 21 of the main control chip IC3. An external resistor R15 is connected between diode D6 and the TX1 terminal, and resistor R15 is externally connected to the TXD1_2 terminal. The RXD1_2 terminal is electrically connected to interface 12 of communication chip IC6, the TXD1_2 terminal is electrically connected to interface 11 of communication chip IC6, interface 9 of communication chip IC6 is externally connected to the RX2 terminal, interface 10 of communication chip IC6 is externally connected to the TX2 terminal, the RX2 terminal is electrically connected to interface 13 of main control chip IC3, and the TX2 terminal is electrically connected to interface 12 of main control chip IC3. The 13 interface of the communication chip IC6 is externally connected to the 232_TX1 terminal through resistor R16; the 14 interface of the communication chip IC6 is externally connected to the 232_RX1 terminal through resistor R18; the 8 interface of the communication chip IC6 is externally connected to the 232_TX2 terminal through resistor R19; and the 7 interface of the communication chip IC6 is externally connected to the 232_RX2 terminal through resistor R20. The 1st interface of the switch SW1 is connected to the 232_RX1 terminal, the 4th interface of the switch SW1 is connected to the 232_TX1 terminal, the 3rd interface of the switch SW1 is connected to the 485_A1 terminal, and the 6th interface of the switch SW1 is connected to the 485_B1 terminal.

6. The self-service pet washing control circuit according to claim 5, characterized in that: It also includes a power statistics circuit (6), which includes a power parameter acquisition chip IC7, an optocoupler IC8, a voltage transformer CT1, a current transformer CT2, and a connector P13. The voltage transformer CT1 is electrically connected to interface 4 of the power parameter acquisition chip IC7 via the VP terminal, the current transformer CT2 is electrically connected to interface 2 of the power parameter acquisition chip IC7 via the IP terminal, and the current transformer CT2 is electrically connected to interface 3 of the power parameter acquisition chip IC7 via the IN terminal.

7. The self-service pet washing control circuit according to claim 6, characterized in that: It also includes a liquid level detection circuit (7) which includes an NPN liquid level sensor and several optocouplers. The input pin of the NPN liquid level sensor is electrically connected to the main control chip IC3 through the optocouplers.

8. The self-service pet washing control circuit according to claim 7, characterized in that: It also includes a pause button detection circuit (8), which includes a connector P2; The connector P2's 2nd interface, resistor R3, and capacitor C20 are connected in series. The capacitor C20 is grounded. The connector P2's 2nd interface and resistor R3 are connected to the IRIN0 terminal, and the resistor R3 and capacitor C20 are connected to the Door terminal. The IRIN0 terminal, resistor R7, resistor R6 and VCC33 terminal are connected in series, and the Door terminal is electrically connected to the 28 interface of the main control chip IC3.

Images