Control circuit of medicine decocting machine

Abstract

The utility model provides a control circuit of a medicine decocting machine. The control circuit comprises a power supply unit, a water control unit, a temperature control unit, an acquisition unit, a control unit, a communication unit, a key unit, a display unit and a timing unit, the power supply unit is connected with commercial power to supply power to the water control unit, the temperature control unit, the acquisition unit, the control unit and the communication unit; the key unit, the collecting unit, the water control unit, the temperature control unit and the control unit are matched to control the automatic water adding and the decocting fire degree, and the control precision of the water amount and the fire degree in the decocting process is improved; communication is established through the communication unit and remote terminal equipment to achieve remote medicine decocting supervision. The medicine decocting state is displayed through the display unit; timing is achieved through the timing unit so as to control the reserved medicine decocting time, the soaking time of the medicinal materials and the medicine decocting time, and the extraction efficiency of the medicinal materials is improved while the medicine decocting requirements of different time periods are met; compared with the prior art, the control precision of the medicine decocting machine and the traditional Chinese medicine decocting efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated circuits, and particularly relates to a control circuit of a decocting machine. Background Art

[0002] A decocting machine is a decocting tool that can quickly decoct medicinal materials. Traditional Chinese medicine decoctions are a traditional form of Chinese medicine preparation, and the quality of the decoction plays an important role in its clinical treatment effect. The material basis for its effect is the active ingredients extracted during decoction. Therefore, to achieve the best treatment effect, it is necessary to extract as many active ingredients as possible.

[0003] Traditional manual decocting methods involve decocting in an open pot, which is time-consuming and laborious, and poses great difficulties for the quality and preservation of medicinal materials. For a long time, the quality problem of manual decocting has become a major problem that needs to be solved urgently. There are two main reasons: one is the problem of adding water, and the amount of water added should be determined according to the weight and volume of the medicine, as well as the water capacity and treatment effect; the other is the timing during the decocting process. Traditional Chinese medicine often involves first and second decoctions, with slow and strong fires, which are difficult to master in practice. Content of the Utility Model

[0004] The utility model provides a control circuit of a decocting machine, aiming to improve the control accuracy of the decocting machine and the efficiency of traditional Chinese medicine decocting.

[0005] To achieve the above purpose, the utility model provides a control circuit of a decocting machine, including:

[0006] A power supply unit, a water control unit, a temperature control unit, a collection unit, a control unit, a communication unit, a key unit, a display unit, and a timing unit;

[0007] The input end of the power supply unit is connected to the mains power supply end, and the output end of the power supply unit is respectively connected to the power supply ends of the water control unit, the temperature control unit, the collection unit, the control unit, and the communication unit;

[0008] The input ends of the water control unit, the temperature control unit, and the display unit are all connected to the output end of the control unit. The first input end of the control unit is respectively connected to the output ends of a flow meter and a temperature sensor through the collection unit, and the second input end of the control unit is connected to the output end of the key unit;

[0009] The signal transmission end of the control unit is connected to the signal transmission end of the timing unit;

[0010] The data transmission end of the control unit is connected to the data transmission end of a remote terminal device through the communication unit.

[0011] Furthermore, the power supply unit includes:

[0012] A power conversion chip, a step-down chip, a first fuse, a first varistor, a first inductor, a first voltage regulator diode, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a first resistor;

[0013] The first pin of the power conversion chip is respectively connected to the first end of the first capacitor, the first end of the first varistor, and the second end of the first fuse. The first end of the first fuse is connected to the live wire of the mains supply.

[0014] The third pin of the power conversion chip is connected to the first end of the second capacitor.

[0015] The fourth pin of the power conversion chip is respectively connected to the second pin of the power conversion chip, the second end of the second capacitor, the first end of the first capacitor, the second end of the first varistor, and the neutral wire of the mains supply.

[0016] The sixth pin of the power conversion chip is respectively connected to the first end of the third capacitor, the first end of the first inductor, the power supply terminal of the water control unit, and the power supply terminal of the temperature control unit. The second end of the first inductor is respectively connected to the first end of the fourth capacitor, the first end of the fifth capacitor, the cathode of the first voltage regulator diode, the first end of the sixth capacitor, and the first power supply terminal of the acquisition unit.

[0017] The fifth pin of the power conversion chip is respectively connected to the second end of the third capacitor, the second end of the fourth capacitor, the second end of the fifth capacitor, and the anode of the first voltage regulator diode and is grounded.

[0018] The first end of the sixth capacitor is respectively connected to the first end of the seventh capacitor, the first end of the first resistor, and the input pin of the step-down chip. The second end of the sixth capacitor is respectively connected to the second end of the seventh capacitor, the ground terminal of the step-down chip, the second end of the eighth capacitor, the second end of the ninth capacitor, and the second end of the tenth capacitor and is grounded.

[0019] The output terminal of the step-down chip is respectively connected to the second end of the first resistor, the first end of the eighth capacitor, the first end of the ninth capacitor, the first end of the tenth capacitor, the power supply terminal of the control unit, the second power supply terminal of the acquisition unit, the power supply terminal of the key unit, and the power supply terminal of the communication unit.

[0020] Furthermore, the temperature control unit includes:

[0021] A first power relay, a second power relay, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, a second diode, a first triode, a second triode;

[0022] The third terminal of the first power relay is respectively connected to the cathode of the first diode and the second end of the second resistor. The first end of the second resistor is connected to the sixth pin of the power conversion chip.

[0023] The fourth pin of the first power relay is respectively connected to the anode of the first diode and the collector of the first triode. The base of the first triode is connected to the second end of the third resistor. The first end of the third resistor is connected to the output end of the control unit. The emitter of the first triode is grounded;

[0024] The first end of the first power relay is respectively connected to the fifth end, the sixth end of the first power relay and an external interface;

[0025] The second end of the first power relay is connected to the external interface;

[0026] The third pin of the second power relay is respectively connected to the cathode of the second diode and the second end of the fourth resistor. The first end of the fourth resistor is connected to the sixth pin of the power conversion chip;

[0027] The fourth pin of the second power relay is respectively connected to the anode of the second diode and the collector of the second triode. The base of the second triode is connected to the second end of the fifth resistor. The first end of the fifth resistor is connected to the output end of the control unit. The emitter of the second triode is grounded;

[0028] The first end of the second power relay is respectively connected to the fifth end, the sixth end of the second power relay and an external interface;

[0029] The second end of the second power relay is connected to the external interface.

[0030] Furthermore, the water control unit includes:

[0031] A third power relay, a third diode, a third triode, a first light-emitting diode, a sixth resistor, a seventh resistor, an eighth resistor, an eleventh capacitor;

[0032] The second end of the third power relay is respectively connected to the cathode of the third diode and the second end of the sixth resistor. The first end of the sixth resistor is connected to the sixth pin of the power conversion chip;

[0033] The fourth pin of the third power relay is respectively connected to the anode of the third diode and the collector of the third triode. The base of the third triode is connected to the second end of the seventh resistor. The first end of the seventh resistor is connected to the cathode of the first light-emitting diode. The anode of the first light-emitting diode is connected to the output end of the control unit. The emitter of the third triode is grounded;

[0034] The third pin of the third power relay is respectively connected to the first end of the eleventh capacitor and an external interface. The second end of the eleventh capacitor is connected to the first end of the eighth resistor. The second end of the eighth resistor and the first end of the third power relay are both connected to the external interface.

[0035] Furthermore, the acquisition unit includes a flow rate acquisition circuit;

[0036] The input end of the flow rate acquisition circuit is connected to the output end of the flow meter through an external interface;

[0037] The flow rate acquisition circuit includes a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a ninth resistor, a tenth resistor, and an eleventh resistor;

[0038] The first end of the twelfth capacitor is respectively connected to the first pin of the external interface, the first end of the thirteenth capacitor, the output end of the buck chip, and the first end of the ninth resistor. The second end of the twelfth capacitor is connected to the second end of the thirteenth capacitor and grounded;

[0039] The second end of the ninth resistor is respectively connected to the second pin of the external interface, the first end of the tenth resistor, the first end of the fourteenth capacitor, and the first end of the eleventh resistor. The second end of the eleventh resistor is connected to the first input end of the control unit through a terminal block;

[0040] The second end of the tenth resistor is connected to the second end of the fourteenth capacitor and grounded. The third pin of the external interface is grounded.

[0041] Furthermore, the acquisition unit further includes a temperature acquisition circuit;

[0042] The input end of the temperature acquisition circuit is connected to the output end of the temperature sensor through an external interface;

[0043] The temperature acquisition circuit includes a twelfth resistor, a thirteenth resistor, a fourteenth resistor, and a fifteenth capacitor;

[0044] The first pin of the external interface is respectively connected to the first end of the thirteenth resistor, the first end of the fourteenth resistor, and the first end of the fifteenth capacitor. The second end of the thirteenth resistor is connected to the second end of the fifteenth capacitor and grounded. The second end of the fourteenth resistor is connected to the first input end of the control unit;

[0045] The second pin of the external interface is connected to the second end of the twelfth resistor. The first end of the twelfth resistor is connected to the output end of the buck chip.

[0046] Furthermore, the key unit includes 12 groups of key circuits, and each group of key circuits includes a first key switch, a fifteenth resistor, and a sixteenth capacitor;

[0047] The first end of the first key switch is grounded. The second end of the first key switch is respectively connected to the input end of the control unit, the second end of the fifteenth resistor, and the first end of the sixteenth capacitor. The second end of the sixteenth capacitor is grounded. The first end of the fifteenth resistor is connected to the second input end of the control unit.

[0048] Furthermore, the communication unit is a WIFI communication unit;

[0049] The data transmission end of the control unit is connected to the data transmission end of the remote terminal device through the WIFI communication unit.

[0050] Furthermore, the display unit includes 4 LED digital tubes and 5 groups of indicator light circuits;

[0051] The input ends of all the LED digital tubes and the input ends of 4 groups of the 5 groups of indicator light circuits are connected to the output end of the control unit, and the input end of the remaining 1 group of indicator light circuits is connected to the output end of the control unit through a terminal block;

[0052] Each group of indicator light circuits includes a light-emitting diode and a resistor.

[0053] Furthermore, it further includes an alarm unit composed of a buzzer, a sixteenth resistor, and a fourth triode;

[0054] The first end of the buzzer is connected to the sixth pin of the power conversion chip;

[0055] The second end of the buzzer is connected to the collector of the fourth triode, the base of the fourth triode is connected to the second end of the sixteenth resistor, the first end of the sixteenth resistor is connected to the output end of the control unit, and the emitter of the fourth triode is grounded.

[0056] The above solution of the present utility model has the following beneficial effects:

[0057] The present utility model includes a power supply unit, a water control unit, a temperature control unit, a collection unit, a control unit, a communication unit, a key unit, a display unit, and a timing unit; the present utility model uses the power supply unit to access the commercial power to supply power to the water control unit, the temperature control unit, the collection unit, the control unit, and the communication unit; through the cooperation of the key unit, the collection unit, the water control unit, and the temperature control unit with the control unit to control the automatic water addition and the decocting temperature, the control accuracy of the water volume and the temperature during the decocting process is improved; through the communication unit to establish communication with the remote terminal device to realize remote decocting supervision; through the display unit to display the state of decocting; through the timing unit to realize timing to control the reserved decocting time, the soaking time of the medicinal materials, and the decocting time, while meeting the decocting requirements in different time periods, the extraction efficiency of the medicinal materials is improved; compared with the prior art, the control accuracy of the decocting machine and the efficiency of traditional Chinese medicine decoction are improved, and a more convenient operation experience and remote monitoring function are provided for users, promoting the modernization process of traditional Chinese medicine preparation technology.

[0058] Other beneficial effects of the present utility model will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0059] Figure 1It is a principle block diagram of an embodiment of the present utility model;

[0060] Figure 2 It is a schematic diagram of a display panel in an embodiment of the present utility model;

[0061] Figure 3 It is a circuit schematic diagram of a power supply unit in an embodiment of the present utility model;

[0062] Figure 4 It is a circuit schematic diagram of a temperature control unit in an embodiment of the present utility model;

[0063] Figure 5 It is a circuit schematic diagram of a water control unit in an embodiment of the present utility model;

[0064] Figure 6 It is a circuit schematic diagram of a collection unit in an embodiment of the present utility model;

[0065] Figure 7 It is a circuit schematic diagram of a key unit in an embodiment of the present utility model;

[0066] Figure 8 It is a circuit schematic diagram of an alarm unit in an embodiment of the present utility model. Detailed implementation manners

[0067] To make the technical problems, technical solutions and advantages to be solved by the present utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the 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.

[0068] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0069] As Figure 1 shown, an embodiment of the present utility model provides a control circuit of a Chinese medicine decocting machine, including:

[0070] Power supply unit, water control unit, temperature control unit, acquisition unit, control unit, communication unit, key unit, display unit, timing unit;

[0071] The input end of the power supply unit is connected to the mains power supply end, and the output ends of the power supply unit are respectively connected to the power supply ends of the water control unit, the temperature control unit, the acquisition unit, the control unit, and the communication unit;

[0072] The input ends of the water control unit, the temperature control unit, and the display unit are all connected to the output end of the control unit;

[0073] The first input end of the control unit is respectively connected to the output ends of the flow meter and the temperature sensor through the acquisition unit, and the second input end of the control unit is connected to the output end of the key unit;

[0074] The signal transmission end of the control unit is connected to the signal transmission end of the timing unit;

[0075] The data transmission end of the control unit is connected to the data transmission end of the remote terminal device through the communication unit.

[0076] The working principle of the embodiment of the present utility model is as follows:

[0077] The user puts the medicinal materials into the decocting machine, starts the power supply, and the power supply unit accesses the power supply from the mains power supply end to provide a stable working voltage for the water control unit, the temperature control unit, the acquisition unit, the control unit, and the communication unit; the key unit sends the received water volume setting value, temperature setting value, reservation time setting value, and decocting time to the control unit, and the control unit sends the first control instruction to the water control unit, the temperature control unit, and the timing unit according to the water volume setting value, temperature setting value, and timing signal. The water control unit opens the solenoid valve to add water according to the control instruction, and the temperature control unit turns on the heating plate according to the control instruction. The control unit sends the timing instruction to the timing unit according to the reservation time setting value and the decocting time, triggering the timing unit to start timing. When the timing time reaches the reservation time setting value, the timing unit issues a clock signal, triggering the control unit to control the opening of the water control unit and the temperature control unit to add water and start heating to decoct the medicine; the acquisition unit collects the water inflow and temperature and feeds them back to the control unit in real time. When the water inflow and temperature reach the preset values, the control unit sends the second control instruction to the water control unit and the temperature control unit to control the stop of adding water and the stop of temperature rise, and start decocting the medicine; when the timing time reaches the decocting time, the timing unit sends a clock signal, triggering the control unit to control the temperature control unit to stop heating, and complete the decocting; the control unit sends the temperature, remaining time, reservation time, and water volume during the decocting process to the display unit for visual display in real time, and the visual interface is as Figure 2 shown.

[0078] It should be noted that the timing unit is a timer that can implement timing or countdown functions according to the set time.

[0079] Most preferably, as Figure 3 shown, the power supply unit for accessing a 220V power supply from the mains to provide a stable operating voltage for the water control unit, temperature control unit, acquisition unit, control unit, and communication unit includes:

[0080] a power conversion chip, a buck chip, a first fuse F1, a first varistor MOV1, a first inductor L1, a first zener diode TVS1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, and a first resistor R1;

[0081] The first pin of the power conversion chip is respectively connected to the first end of the first capacitor C1, the first end of the first varistor MOV1, and the second end of the first fuse F1. The first end of the first fuse F1 is connected to the live wire of the mains.

[0082] The third pin of the power conversion chip is connected to the first end of the second capacitor C2.

[0083] The fourth pin of the power conversion chip is respectively connected to the second pin of the power conversion chip, the second end of the second capacitor C2, the first end of the first capacitor C1, the second end of the first varistor MOV1, and the neutral wire of the mains.

[0084] The sixth pin of the power conversion chip is respectively connected to the first end of the third capacitor C3, the first end of the first inductor L1, the power supply terminal of the water control unit, and the power supply terminal of the temperature control unit. The second end of the first inductor L1 is respectively connected to the first end of the fourth capacitor C4, the first end of the fifth capacitor C5, the cathode of the first zener diode TVS1, the first end of the sixth capacitor C6, and the first power supply terminal of the acquisition unit.

[0085] The fifth pin of the power conversion chip is respectively connected to the second end of the third capacitor C3, the second end of the fourth capacitor C4, the second end of the fifth capacitor C5, and the anode of the first zener diode TVS1 and is grounded.

[0086] The first end of the sixth capacitor C6 is respectively connected to the first end of the seventh capacitor C7, the first end of the first resistor R1, and the input pin of the buck chip. The second end of the sixth capacitor C6 is respectively connected to the second end of the seventh capacitor C7, the ground terminal of the buck chip, the second end of the eighth capacitor C8, the second end of the ninth capacitor C9, and the second end of the tenth capacitor C10 and is grounded.

[0087] The output terminals of the step-down chip are respectively connected to the second terminal of the first resistor R1, the first terminal of the eighth capacitor C8, the first terminal of the ninth capacitor C9, the first terminal of the tenth capacitor C10, the power supply terminal of the control unit, the second power supply terminal of the acquisition unit, and the power supply terminal of the communication unit.

[0088] In the embodiment of the present invention, the model of the power conversion chip is AC220-DC5; the power conversion chip, the first fuse F1, the first varistor MOV1, the first inductor L1, the first zener diode TVS1, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5 convert the 220V power supply connected from the first terminal of the first fuse F1 and the first varistor MOV1 into a 5V power supply and output it from the cathode terminal of the first zener diode TVS1; the step-down chip, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the tenth capacitor C10, the first resistor R1 step down the 5V power supply connected from the first terminal of the sixth capacitor C6 to a 3.3V power supply and output it from the first terminal of the tenth capacitor C10.

[0089] Most preferably, as Figure 4 shown, the temperature control unit for controlling the start and stop of the heating plate and regulating the maximum temperature during decocting medicine includes:

[0090] The first power relay JQ1, the second power relay JQ2, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the first diode D1, the second diode D2, the first triode V1, the second triode V2;

[0091] The third terminal of the first power relay JQ1 is respectively connected to the cathode of the first diode D1 and the second terminal of the second resistor R2, and the first terminal of the second resistor R2 is connected to the sixth pin of the power conversion chip;

[0092] The fourth pin of the first power relay JQ1 is respectively connected to the anode of the first diode D1 and the collector of the first triode V1, the base of the first triode V1 is connected to the second terminal of the third resistor R3, the first terminal of the third resistor R3 is connected to the output terminal of the control unit, and the emitter of the first triode V1 is grounded;

[0093] The first terminal of the first power relay JQ1 is respectively connected to the fifth terminal of the first power relay JQ1, the sixth terminal of the first power relay JQ1, and the external interface;

[0094] The second terminal of the first power relay JQ1 is connected to the external interface;

[0095] The third terminal of the second power relay JQ2 is respectively connected to the cathode of the second diode D2 and the second terminal of the fourth resistor R4, and the first terminal of the fourth resistor R4 is connected to the sixth pin of the power conversion chip;

[0096] The fourth pin of the second power relay JQ2 is respectively connected to the anode of the second diode D2 and the collector of the second triode V2. The base of the second triode V2 is connected to the second end of the fifth resistor R5. The first end of the fifth resistor R5 is connected to the output end of the control unit. The emitter of the second triode V2 is grounded;

[0097] The first end of the second power relay JQ2 is respectively connected to the fifth end, the sixth end of the second power relay JQ2, and an external interface;

[0098] The second end of the second power relay JQ2 is connected to the external interface.

[0099] In the embodiment of the present utility model, both the first power relay JQ1 and the second power relay JQ2 adopt SLA-5VDC-SL-A. The 5V power supply is connected to the temperature control unit from the first ends of the second resistor R2 and the fourth resistor R4. The SLAK1 and SLAK2 signals output by the control unit are connected to the temperature control unit from the first ends of the third resistor R3 and the fifth resistor R5. The temperature control unit sends the temperature control signals NIN1, NIN2, and 220N to the heating plate through the first ends of the first power relay JQ1 and the second power relay JQ2 via the external interface.

[0100] Most preferably, as Figure 5 shown, the water control unit for controlling the start and stop of the solenoid valve includes:

[0101] A third power relay JQ3, a third diode D3, a third triode V3, a first light-emitting diode LED1, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, and an eleventh capacitor C11;

[0102] The second end of the third power relay JQ3 is respectively connected to the cathode of the third diode D3 and the second end of the sixth resistor R6. The first end of the sixth resistor R6 is connected to the sixth pin of the power conversion chip;

[0103] The fourth end of the third power relay JQ3 is respectively connected to the anode of the third diode D3 and the collector of the third triode V3. The base of the third triode V3 is connected to the second end of the seventh resistor R7. The first end of the seventh resistor R7 is connected to the cathode of the first light-emitting diode LED1. The anode of the first light-emitting diode LED1 is connected to the output end of the control unit. The emitter of the third triode V3 is grounded;

[0104] The third terminal of the third power relay JQ3 is respectively connected to the first terminal of the eleventh capacitor C11 and an external interface. The second terminal of the eleventh capacitor C11 is connected to the first terminal of the eighth resistor R8. The second terminal of the eighth resistor R8 and the first terminal of the third power relay JQ3 are both connected to the external interface.

[0105] In the embodiment of the present utility model, the third power relay JQ3 adopts SLA-5VDC-SL-A. The 5V power supply is connected to the water control unit from the first terminal of the sixth resistor R6. The control signal SLAK3 output by the control unit is connected to the water control unit from the anode of the first light-emitting diode LED1. The water control unit outputs the water control signal NSSR3, 220L, and 220N to the solenoid valve through the third pin of the third power relay JQ3 via the external interface.

[0106] Most preferably, as Figure 6 shown, the acquisition unit includes a flow rate acquisition circuit for acquiring the water inflow.

[0107] The input end of the flow rate acquisition circuit is connected to the output end of the flow meter through the external interface.

[0108] The flow rate acquisition circuit includes the twelfth capacitor C12, the thirteenth capacitor C13, the fourteenth capacitor C14, the ninth resistor R9, the tenth resistor R10, and the eleventh resistor R11.

[0109] The first terminal of the twelfth capacitor C12 is respectively connected to the first pin of the external interface, the first terminal of the thirteenth capacitor C13, the output end of the step-down chip, and the first terminal of the ninth resistor R9. The second terminal of the twelfth capacitor C12 is connected to the second terminal of the thirteenth capacitor C13 and grounded.

[0110] The second terminal of the ninth resistor R9 is respectively connected to the second pin of the external interface, the first terminal of the tenth resistor R10, the first terminal of the fourteenth capacitor C14, and the first terminal of the eleventh resistor R11. The second terminal of the eleventh resistor R11 is connected to the first input end of the control unit through a terminal block.

[0111] The second terminal of the tenth resistor R10 is connected to the second terminal of the fourteenth capacitor C14 and grounded. The third pin of the external interface is grounded.

[0112] In the embodiment of the present utility model, the 5V power supply is connected to the flow rate acquisition circuit from the first terminal of the ninth resistor R9, acquires the water inflow from the flow meter through the external interface P17, and sends the acquired water inflow data LL to the control unit through the second terminal of the eleventh resistor R11.

[0113] Most preferably, as Figure 6 shown, the acquisition unit further includes a temperature acquisition circuit for acquiring the temperature of the heating plate.

[0114] The input end of the temperature acquisition circuit is connected to the output end of the temperature sensor through an external interface;

[0115] The temperature acquisition circuit includes a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, and a fifteenth capacitor C15;

[0116] The first pin of the external interface is respectively connected to the first end of the thirteenth resistor R13, the first end of the fourteenth resistor R14, and the first end of the fifteenth capacitor C15. The second end of the thirteenth resistor R13 is connected to the second end of the fifteenth capacitor C15 and grounded. The second end of the fourteenth resistor R14 is connected to the first input end of the control unit;

[0117] The second pin of the external interface is connected to the second end of the twelfth resistor R12, and the first end of the twelfth resistor R12 is connected to the output end of the buck chip.

[0118] In the embodiment of the present utility model, the 3.3V power supply is connected to the temperature acquisition circuit through the twelfth resistor R^{12}, and the temperature is collected from the temperature sensor through the external interface P3, and the collected temperature data TEMP1 is sent to the control unit through the second end of the fourteenth resistor R^{14}.

[0119] Most preferably, as Figure 7 shown, the key unit includes 12 groups of key circuits for receiving external control signals, and each group of key circuits includes a first key KEY1 switch, a fifteenth resistor R15, and a sixteenth capacitor C16;

[0120] The first end of the first key KEY1 switch is grounded. The second end of the first key KEY1 switch is respectively connected to the input end of the control unit, the second end of the fifteenth resistor R15, and the first end of the sixteenth capacitor C16. The second end of the sixteenth capacitor C16 is grounded, and the first end of the fifteenth resistor R15 is connected to the second input end of the control unit.

[0121] In the embodiment of the present utility model, the functions of the key circuit include temperature increase, temperature decrease, decocting time increase, decocting time decrease, reservation time increase, reservation time decrease, water volume increase, water volume decrease, switch, decocting or stopping, adding water, heat preservation or concentration.

[0122] Most preferably, the communication unit is a WIFI communication unit;

[0123] The data transmission end of the control unit is connected to the data transmission end of the remote terminal device through the WIFI communication unit for communicating with the remote terminal device to achieve remote supervision.

[0124] Most preferably, the display unit includes 4 LED digital tubes for displaying water volume, temperature, remaining time, and reservation time, and 5 groups of indicator lamp circuits for displaying switch status, decocting fire status, water addition status, and status after decocting completion;

[0125] The input ends of all LED digital tubes and the input ends of 4 groups of indicator lamp circuits among the 5 groups of indicator lamp circuits are connected to the output end of the control unit, and the remaining 1 group of indicator lamp circuits is connected to the output end of the control unit through a terminal block;

[0126] Each group of indicator lamp circuits includes a light-emitting diode and a resistor.

[0127] Most preferably, as Figure 8 shown, it further includes an alarm unit composed of a buzzer, the sixteenth resistor R16, and the fourth triode V4, which is used to give an alarm when the water volume or temperature exceeds the preset value during the decocting process;

[0128] The first end of the buzzer is connected to the sixth pin of the power conversion chip to access a 5V power supply;

[0129] The second end of the buzzer is connected to the collector of the fourth triode V4. The base of the fourth triode V4 is connected to the second end of the sixteenth resistor R16. The first end of the sixteenth resistor R16 is connected to the output end of the control unit to access the alarm signal BEEP, and the emitter of the fourth triode V4 is grounded.

[0130] In the embodiment of the present invention, the control unit is composed of an STM32F series single-chip control chip and its peripheral circuits.

[0131] When decocting medicine, press the switch button on the control panel to enter the reservation mode. Set the reservation soaking time through the timing unit, then press the decocting function button to enter the reservation soaking mode. Set the metal amount through the button unit, start water inlet through the water control unit, and the display unit displays the reservation time and water volume. After the reservation time is displayed as 00:00, decocting starts automatically.

[0132] According to the characteristic that the boiling point of water is 100°C at normal temperature and pressure, set the temperature value through the button unit and send the temperature setting value to the control unit. The control unit sends a temperature control instruction to the temperature control unit. The temperature is usually set to 101 - 105°C. The display unit displays the gentle fire time (the time of heating with low fire after the water boils). The temperature control unit controls the heating plate to heat, and enters the strong fire decocting mode.

[0133] The acquisition unit transmits the current temperature signal to the control unit. The control unit controls the display unit to display the current temperature in real time. When the current temperature reaches 100 degrees, the medicine water is in a boiling state, and the display unit is triggered to start displaying the remaining time (countdown according to the set decocting time).

[0134] It should be noted that if there are herbs that need to be decocted first and then added later, the decocting machine can be paused through the key unit, and the later-added herbs can be added to achieve decocting first and then adding later. The temperature control unit controls the heating plate to continuously heat. When the current temperature rises to the set maximum temperature, the control unit controls the temperature control unit to cut off the strong fire output and only leave the gentle fire output to continue working until the decocting time is completed. This method ensures that after sufficient boiling during the strong fire, it enters the gentle fire decocting, improves the decocting effect, and prevents dry burning caused by the failure of the collection unit, thus improving the reliability.

[0135] The embodiment of the present utility model includes a power supply unit, a water control unit, a temperature control unit, a collection unit, a control unit, a communication unit, a key unit, a display unit, and a timing unit. The embodiment of the present utility model uses the power supply unit to connect to the mains power to supply power to the water control unit, the temperature control unit, the collection unit, the control unit, and the communication unit. The automatic water addition and the decocting heat are controlled in cooperation through the key unit, the collection unit, the water control unit, and the temperature control unit, improving the control accuracy of the water volume and the heat during the decocting process. Communication is established with the remote terminal device through the communication unit to achieve remote decocting supervision. The state of decocting is displayed through the display unit. Timing is achieved through the timing unit to control the scheduled decocting time, the soaking time of the herbs, and the decocting time, improving the extraction efficiency of the herbs while meeting the decocting requirements at different time periods. Compared with the prior art, the control accuracy of the decocting machine and the efficiency of traditional Chinese medicine decoction are improved, and a more convenient operation experience and remote monitoring function are provided for users, promoting the modernization process of traditional Chinese medicine preparation technology.

[0136] The above is the preferred implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle described in the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A control circuit for a decoction machine, characterized in that, Including: Power supply unit, water control unit, temperature control unit, acquisition unit, control unit, communication unit, button unit, display unit, timing unit; The input end of the power supply unit is connected to the mains end, and the output ends of the power supply unit are respectively connected to the power supply ends of the water control unit, the temperature control unit, the acquisition unit, the control unit, and the communication unit; The input ends of the water control unit, the temperature control unit, and the display unit are all connected to the output end of the control unit; The first input end of the control unit is respectively connected to the output ends of a flowmeter and a temperature sensor through the acquisition unit; The output end of the button unit is connected to the second input end of the control unit; The signal transmission end of the control unit is connected to the signal transmission end of the timing unit; The data transmission end of the control unit is connected to the data transmission end of a remote terminal device through the communication unit.

2. The control circuit of the decocting machine according to claim 1, characterized in that The power supply unit includes: Power conversion chip, buck chip, first fuse, first varistor, first inductor, first zener diode, first capacitor, second capacitor, third capacitor, fourth capacitor, fifth capacitor, sixth capacitor, seventh capacitor, eighth capacitor, ninth capacitor, tenth capacitor, first resistor; The first pin of the power conversion chip is respectively connected to the first end of the first capacitor, the first end of the first varistor, and the second end of the first fuse, and the first end of the first fuse is connected to the live wire of the mains end; The third pin of the power conversion chip is connected to the first end of the second capacitor; The fourth pin of the power conversion chip is respectively connected to the second pin of the power conversion chip, the second end of the second capacitor, the first end of the first capacitor, the second end of the first varistor, and the neutral wire of the mains end; The sixth pin of the power conversion chip is respectively connected to the first end of the third capacitor, the first end of the first inductor, the power supply end of the water control unit, and the power supply end of the temperature control unit. The second end of the first inductor is respectively connected to the first end of the fourth capacitor, the first end of the fifth capacitor, the cathode of the first zener diode, the first end of the sixth capacitor, and the first power supply end of the acquisition unit; The fifth pin of the power conversion chip is respectively connected to the second end of the third capacitor, the second end of the fourth capacitor, the second end of the fifth capacitor, and the anode of the first zener diode and grounded; The first end of the sixth capacitor is respectively connected to the first end of the seventh capacitor, the first end of the first resistor, and the input pin of the buck chip. The second end of the sixth capacitor is respectively connected to the second end of the seventh capacitor, the ground end of the buck chip, the second end of the eighth capacitor, the second end of the ninth capacitor, and the second end of the tenth capacitor and grounded; The output terminals of the step-down chip are respectively connected to the second terminal of the first resistor, the first terminal of the eighth capacitor, the first terminal of the ninth capacitor, the first terminal of the tenth capacitor, the power supply terminal of the control unit, the second power supply terminal of the acquisition unit, and the power supply terminal of the communication unit.

3. The control circuit of the decocting machine according to claim 2, wherein, The temperature control unit includes: A first power relay, a second power relay, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, a second diode, a first triode, and a second triode; The third terminal of the first power relay is respectively connected to the cathode of the first diode and the second terminal of the second resistor, and the first terminal of the second resistor is connected to the sixth pin of the power conversion chip; The fourth pin of the first power relay is respectively connected to the anode of the first diode and the collector of the first triode. The base of the first triode is connected to the second terminal of the third resistor. The first terminal of the third resistor is connected to the output terminal of the control unit, and the emitter of the first triode is grounded; The first terminal of the first power relay is respectively connected to the fifth terminal of the first power relay, the sixth terminal of the first power relay, and an external interface; The second terminal of the first power relay is connected to the external interface; The third terminal of the second power relay is respectively connected to the cathode of the second diode and the second terminal of the fourth resistor, and the first terminal of the fourth resistor is connected to the sixth pin of the power conversion chip; The fourth pin of the second power relay is respectively connected to the anode of the second diode and the collector of the second triode. The base of the second triode is connected to the second terminal of the fifth resistor. The first terminal of the fifth resistor is connected to the output terminal of the control unit, and the emitter of the second triode is grounded; The first terminal of the second power relay is respectively connected to the fifth terminal of the second power relay, the sixth terminal of the second power relay, and the external interface; The second terminal of the second power relay is connected to the external interface.

4. The control circuit of the decocting machine according to claim 3, characterized in that, The water control unit includes: A third power relay, a third diode, a third triode, a first light-emitting diode, a sixth resistor, a seventh resistor, an eighth resistor, and an eleventh capacitor; The second terminal of the third power relay is respectively connected to the cathode of the third diode and the second terminal of the sixth resistor, and the first terminal of the sixth resistor is connected to the sixth pin of the power conversion chip; The fourth terminal of the third power relay is respectively connected to the anode of the third diode and the collector of the third triode. The base of the third triode is connected to the second terminal of the seventh resistor. The first terminal of the seventh resistor is connected to the cathode of the first light-emitting diode. The anode of the first light-emitting diode is connected to the output terminal of the control unit, and the emitter of the third triode is grounded; The third terminal of the third power relay is respectively connected to the first terminal of the eleventh capacitor and the external interface. The second terminal of the eleventh capacitor is connected to the first terminal of the eighth resistor. The second terminal of the eighth resistor and the first terminal of the third power relay are both connected to the external interface.

5. The control circuit of the decocting machine according to claim 4, characterized in that, The acquisition unit includes a flow rate acquisition circuit; The input end of the flow rate acquisition circuit is connected to the output end of the flow meter through the external interface; The flow rate acquisition circuit includes a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a ninth resistor, a tenth resistor, and an eleventh resistor; The first terminal of the twelfth capacitor is respectively connected to the first pin of the external interface, the first terminal of the thirteenth capacitor, the output end of the buck chip, and the first terminal of the ninth resistor. The second terminal of the twelfth capacitor is connected to the second terminal of the thirteenth capacitor and grounded; The second terminal of the ninth resistor is respectively connected to the second pin of the external interface, the first terminal of the tenth resistor, the first terminal of the fourteenth capacitor, and the first terminal of the eleventh resistor. The second terminal of the eleventh resistor is connected to the first input end of the control unit through a terminal block; The second terminal of the tenth resistor is connected to the second terminal of the fourteenth capacitor and grounded. The third pin of the external interface is grounded.

6. The control circuit of the decocting machine according to claim 5, characterized in that, The acquisition unit further includes a temperature acquisition circuit; The input end of the temperature acquisition circuit is connected to the output end of the temperature sensor through the external interface; The temperature acquisition circuit includes a twelfth resistor, a thirteenth resistor, a fourteenth resistor, and a fifteenth capacitor; The first pin of the external interface is respectively connected to the first terminal of the thirteenth resistor, the first terminal of the fourteenth resistor, and the first terminal of the fifteenth capacitor. The second terminal of the thirteenth resistor is connected to the second terminal of the fifteenth capacitor and grounded. The second terminal of the fourteenth resistor is connected to the first input end of the control unit; The second pin of the external interface is connected to the second terminal of the twelfth resistor. The first terminal of the twelfth resistor is connected to the output end of the buck chip.

7. The control circuit of the decocting machine according to claim 6, characterized in that, The key unit includes 12 groups of key circuits. Each group of key circuits includes a first key switch, a fifteenth resistor, and a sixteenth capacitor; The first terminal of the first key switch is grounded. The second terminal of the first key switch is respectively connected to the input end of the control unit, the second terminal of the fifteenth resistor, and the first terminal of the sixteenth capacitor. The second terminal of the sixteenth capacitor is grounded. The first terminal of the fifteenth resistor is connected to the second input end of the control unit.

8. The control circuit of the decocting machine according to claim 7, characterized in that, The communication unit is a WIFI communication unit; The data transmission end of the control unit is connected to the data transmission end of the remote terminal device through the WIFI communication unit.

9. The control circuit of the decocting machine according to claim 8, characterized in that, The display unit includes 4 LED digital tubes and 5 groups of indicator light circuits; The input ends of all LED digital tubes and the input ends of 4 groups of indicator light circuits among the 5 groups of indicator light circuits are all connected to the output end of the control unit. The remaining 1 group of indicator light circuits is connected to the output end of the control unit through a terminal block; Each group of indicator light circuits includes a light-emitting diode and a resistor.

10. The control circuit of the decocting machine according to claim 9, characterized in that, It further includes an alarm unit composed of a buzzer, a sixteenth resistor, and a fourth triode; The first end of the buzzer is connected to the sixth pin of the power conversion chip; The second end of the buzzer is connected to the collector of the fourth triode. The base of the fourth triode is connected to the second end of the sixteenth resistor. The first end of the sixteenth resistor is connected to the output end of the control unit. The emitter of the fourth triode is grounded.

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