Electric control type medicine-carrying hot compress patch, control circuit and control method

Abstract

The invention discloses an electronic control type medicine-carrying hot compress patch, a control circuit and a control method, the electronic control type medicine-carrying hot compress patch comprises a medicine-carrying hot compress patch and a controller, the medicine-carrying hot compress patch is connected with the controller, the medicine-carrying hot compress patch comprises a medicine-carrying layer, a heating layer and a fixing band, the heating layer is arranged on the medicine-carrying layer, the fixing band is arranged on the heating layer, and the heating layer is connected with the controller. The medicine carrying type of the medicine carrying layer is selected based on user requirements, the medicine carrying layer is detachably connected with the heating layer, a plurality of electric heating patches are arranged on the heating layer, the heating layer is used for heating the medicine carrying layer, and the fixing belt is used for attaching and fixing the medicine carrying layer and the human skin. And the controller performs heating control on the electric heating patch in the heating layer based on the effective release temperature of the medicine on the medicine carrying layer.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature control of a medicine-loaded hot compress patch, and in particular to an electrically controlled medicine-loaded hot compress patch, a control circuit and a control method. Background Art

[0002] The drug-loaded hot compress patch can achieve therapeutic effects such as warming the meridians, promoting blood circulation, and removing wind and dampness through the combined effects of drug power and heat. Due to the different types of drugs loaded in the drug-loaded hot compress patch, the release temperature of the active ingredients of the drugs is also different. When the drug is too hot, the Chinese medicine ingredients will be destroyed. On the contrary, at low temperatures, the active ingredients of the drugs may not be fully released. Announcement No.; CN114732591B discloses an electrically controlled multi-effect hot compress patch. The electrically controlled hot compress patch can heat the heating piece by energizing the electric heating patch to achieve heating of the drug and electrical treatment. The thermostat maintains the heating plate within a temperature range to prevent burns to the human body. However, the electrically controlled hot compress patch cannot quickly heat the medicine to the reference release temperature of the active ingredient of the medicine during the initial use of the medicine-loaded hot compress patch, and then automatically establish the temperature error threshold range for the effective release of the medicine based on the reference release temperature of the active ingredient of the medicine. Based on this, the heating current of the medicine is repeatedly calibrated until it stabilizes within the temperature error threshold range, so as to improve the temperature control accuracy and prevent changes in the use environment from causing the medicine to be in an over-temperature / low-temperature state, affecting the treatment effect. Summary of the Invention

[0003] In response to the above technical problems, the purpose of the present invention is to provide an electrically controlled drug-loaded hot compress patch, including a drug-loaded hot compress patch and a controller. The drug-loaded hot compress patch and the controller are connected. The drug-loaded hot compress patch includes a drug-loaded layer, a heating layer, and a fixing belt. The heating layer is arranged on the drug-loaded layer, and the fixing belt is arranged on the heating layer. The type of drug loaded in the drug-loaded layer is selected based on user needs. The drug-loaded layer and the heating layer are detachably connected. A plurality of electric heating patches are arranged on the heating layer. The heating layer is used to heat the drug-loaded layer. The fixing belt is used to fit and fix the drug-loaded layer to the human skin. The controller controls the heating of the electric heating patches in the heating layer based on the temperature at which the drug on the drug-loaded layer is effectively released.

[0004] Furthermore, the control circuit includes a main control unit and a heating unit, the main control unit is used to feedback a heating mode signal and establish a temperature error threshold range for effective release of the drug based on a reference release temperature of the active ingredient of the drug, and the heating unit is used to heat the electric heating patch in the drug-loaded hot compress to increase the temperature of the drug, and the main control unit includes a first operational amplifier U1, a second operational amplifier U2, a third operational amplifier U3, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a nineteenth resistor R19, and a thirty-first resistor R31; The non-inverting end of the first operational amplifier U1 is connected to one end of the second resistor R2 and one end of the eighth resistor R8, the inverting end of the first operational amplifier U1 is connected to one end of the first resistor R1 and one end of the tenth resistor R10, the output end of the first operational amplifier U1 is connected to the other end of the first resistor R1, the non-inverting end of the second operational amplifier U2 is connected to one end of the third resistor R3 and one end of the ninth resistor R9, the inverting end of the second operational amplifier U2 is connected to one end of the fourth resistor R4 and one end of the fifth resistor R5, the output end of the second operational amplifier U2 is connected to the other end of the fourth resistor R4, the non-inverting end of the third operational amplifier U3 is connected to the nineteenth resistor R19 The inverting end of the third operational amplifier U3 is connected to one end of the sixth resistor R6, the output end of the third operational amplifier U3 is connected to the other end of the sixth resistor R6, the other end of the eighth resistor R8, and the other end of the ninth resistor R9, the other end of the second resistor R2 is connected to the other end of the fifth resistor R5, one end of the seventh resistor R7, and one end of the eleventh resistor R11, the other end of the seventh resistor R7 and the other end of the nineteenth resistor R19 are connected to the power supply, and the other end of the third resistor R3, the other end of the tenth resistor R10, the other end of the eleventh resistor R11, and the other end of the thirty-first resistor R31 are connected to the ground.

[0005] Furthermore, the main control unit further includes a seventh operational amplifier U7, an eighth operational amplifier U8, a ninth operational amplifier U9, a second diode D2, a third diode D3, a fourth diode D4, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, and a twentieth resistor R20; The non-inverting terminal of the seventh operational amplifier U7 is connected to the IN / 1 terminal, the inverting terminal of the seventh operational amplifier U7 is connected to the output terminal of the third operational amplifier U3, the output terminal of the seventh operational amplifier U7 is connected to the anode of the fourth diode D4, the non-inverting terminal of the eighth operational amplifier U8 is connected to one end of the sixteenth resistor R16, one end of the eighteenth resistor R18, the cathode of the second diode D2, and the cathode of the fourth diode D4, the inverting terminal of the eighth operational amplifier U8 is connected to one end of the fifteenth resistor R15, one end of the seventeenth resistor R17, the output terminal of the eighth operational amplifier U8 is connected to the anode of the second diode D2 and the inverting terminal of the ninth operational amplifier U9, the non-inverting terminal of the ninth operational amplifier U9 is connected to one end of the twentieth resistor R20 and the anode of the third diode D3, the other end of the sixteenth resistor R16, the other end of the seventeenth resistor R17, and the other end of the twentieth resistor R20 are connected to the power supply, and the other end of the fifteenth resistor R15, the other end of the eighteenth resistor R18, the cathode of the third diode D3 and the ground terminal are connected.

[0006] Furthermore, the main control unit further includes a fifth operational amplifier U5, a sixth operational amplifier U6, a third field effect transistor Q3, a fourteenth resistor R14, a twenty-second resistor R22, a first connector P1, and a second connector P2; The non-inverting end of the fifth operational amplifier U5, the inverting end of the sixth operational amplifier U6 and the IN / 1 end are connected, the inverting end of the fifth operational amplifier U5 is connected to the output end of the first operational amplifier U1, the output end of the fifth operational amplifier U5, one end of the twenty-second resistor R22 and the first connector P1 end are connected, the non-inverting end of the sixth operational amplifier U6 is connected to the output end of the second operational amplifier U2, the output end of the sixth operational amplifier U6, the drain of the third field-effect transistor Q3, one end of the fourteenth resistor R14 are connected to the second connector P2 end, the gate of the third field-effect transistor Q3 is connected to the output end of the ninth operational amplifier U9, and the other end of the fourteenth resistor R14, the other end of the twenty-second resistor R22, the source of the third field-effect transistor Q3 and the ground end are connected.

[0007] Furthermore, the main control unit further includes an eleventh inverter U11, a fourth field effect transistor Q4, a seventh diode D7, a twenty-eighth resistor R28, a thirtieth resistor R30, a third connector P3, a fourth connector P4, and a fifth connector P5; The input end of the eleventh inverter U11, the drain of the fourth field-effect transistor Q4, one end of the twenty-eighth resistor R28 and the end of the third connector P3 are connected; the output end of the eleventh inverter U11, one end of the thirtieth resistor R30 and the end of the fourth connector P4 are connected; the gate of the fourth field-effect transistor Q4, the anode of the seventh diode D7 and the end of the fifth connector P5 are connected; the cathode of the seventh diode D7 and one end of the fifteenth resistor R15 are connected; the other end of the twenty-eighth resistor R28 is connected to the power supply; and the source of the fourth field-effect transistor Q4 and the other end of the thirtieth resistor R30 are connected to the ground end.

[0008] Furthermore, the control circuit further includes an auxiliary control unit, which includes a fourth operational amplifier U4, a first field-effect transistor Q1, a second field-effect transistor Q2, a first diode D1, a first capacitor C1, a twelfth resistor R12, a thirteenth resistor R13, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, and a twenty-sixth resistor R26; The non-inverting terminal of the fourth operational amplifier U4 is connected to one end of the twenty-third resistor R23 and the anode of the first diode D1. The inverting terminal of the fourth operational amplifier U4 is connected to the source of the first field-effect transistor Q1 and one end of the thirteenth resistor R13. The output terminal of the fourth operational amplifier U4 is connected to one end of the twenty-sixth resistor R26. The gate of the first field-effect transistor Q1, the gate of the second field-effect transistor Q2, one end of the twenty-fourth resistor R24 ​​and the IN / 2 terminal are connected. The drain of the first field-effect transistor Q1 and the drain of the second field-effect transistor Q2, one end of the first capacitor C1 and one end of the twenty-fifth resistor R25 are connected. The source of the second field-effect transistor Q2 is connected to one end of the twelfth resistor R12. The other end of the twelfth resistor R12 and the other end of the twenty-third resistor R23 are connected to the power supply. The cathode of the first diode D1, the other end of the first capacitor C1, the other end of the thirteenth resistor R13, the other end of the twenty-fourth resistor R24, the other end of the twenty-fifth resistor R25 and the other end of the twenty-sixth resistor R26 are connected to the ground terminal.

[0009] Furthermore, the auxiliary control unit further includes a tenth digital potentiometer U10, a fifth field effect transistor Q5, a fifth diode D5, a sixth diode D6, a twenty-seventh resistor R27, and a sixth connector P6; The third pin of the tenth digital potentiometer U10 is connected to the cathode of the fifth diode D5 and the cathode of the sixth diode D6, the fourth pin of the tenth digital potentiometer U10 and one end of the twenty-seventh resistor R27 are connected to the power supply, the eleventh pin of the tenth digital potentiometer U10 and the twelfth pin of the tenth digital potentiometer U10 are connected to the drain of the fifth field-effect transistor Q5 and the other end of the twenty-seventh resistor R27, the source of the fifth field-effect transistor Q5 is connected to the end of the sixth connector P6, the gate of the fifth field-effect transistor Q5 is connected to the IN / 2 end, the anode of the fifth diode D5 is connected to one end of the twenty-sixth resistor R26, the anode of the sixth diode D6 is connected to the IN / 3 end, the sixth pin of the tenth digital potentiometer U10, the tenth pin of the tenth digital potentiometer U10, and the fourteenth pin of the tenth digital potentiometer U10 are connected to the ground end.

[0010] Furthermore, the main control unit further includes a twenty-first resistor R21; One end of the twenty-first resistor R21 is connected to the gate of the third field effect transistor Q3 , and the other end of the twenty-first resistor R21 is connected to the ground.

[0011] Furthermore, the main control unit further includes a twenty-ninth resistor R29; One end of the twenty-ninth resistor R29 is connected to the gate of the fourth field effect transistor Q4, and the other end of the twenty-ninth resistor R29 is connected to the ground.

[0012] Furthermore, the control method of the electronically controlled drug-loaded hot compress control circuit includes the following steps: Step 1: During the initial use of the drug-loaded hot compress, the drug is rapidly heated to a reference release temperature of the active ingredient of the drug, while limiting the activation of the temperature calibration mode during the rapid heating period; Step 2: Automatically establish a temperature error threshold range for effective drug release based on the reference release temperature of the drug's active ingredient; Step 3: After the rapid heating is completed, enter the temperature calibration mode and repeatedly calibrate the heating current of the drug in this mode until it stabilizes within the temperature error threshold; Step 4: After receiving the reset signal, reset the main control unit and the auxiliary control unit.

[0013] The beneficial effects of the present invention compared with the prior art are: The present invention can quickly heat the medicine to the reference release temperature of the medicine's active ingredient at the initial stage of use of the medicine-loaded hot compress patch, and automatically establish a temperature error threshold range for the effective release of the medicine based on the reference release temperature of the medicine's active ingredient after the rapid heating is completed. Based on this, the heating current of the medicine is repeatedly calibrated until it stabilizes within the temperature error threshold range, thereby improving the temperature control accuracy and preventing changes in the use environment from causing the medicine to be in an over-temperature / low-temperature state, thereby affecting the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction is given below to the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a circuit structure diagram of the main control unit provided by the present invention.

[0016] Figure 2 This is a circuit structure diagram of the auxiliary control unit provided by the present invention. DETAILED DESCRIPTION

[0017] In order to make the objects and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the embodiments. It should be understood that the following text is only used to describe one or several specific implementation methods of the present invention and does not strictly limit the scope of protection specifically requested by the present invention.

[0018] The present invention discloses an electrically controlled drug-loaded hot compress patch, comprising a drug-loaded hot compress patch and a controller, wherein the drug-loaded hot compress patch and the controller are connected, the drug-loaded hot compress patch comprising a drug-loaded layer, a heating layer, and a fixing belt, wherein the heating layer is arranged on the drug-loaded layer, the fixing belt is arranged on the heating layer, the type of drug loaded in the drug-loaded layer is selected based on user needs, the drug-loaded layer and the heating layer are detachably connected, a plurality of electric heating patches are arranged on the heating layer, the heating layer is used to heat the drug-loaded layer, the fixing belt is used to fit and fix the drug-loaded layer to human skin, and the controller controls the heating of the electric heating patches in the heating layer based on the effective release temperature of the drug on the drug-loaded layer.

[0019] like Figure 1 As shown, specifically, the control circuit includes a main control unit and a heating unit. The main control unit is used to feedback a heating mode signal and establish a temperature error threshold range for effective release of the drug based on a reference release temperature of the active ingredient of the drug. The heating unit is used to heat the electric heating patch in the drug-loaded hot compress to increase the temperature of the drug. The main control unit includes a first operational amplifier U1, a second operational amplifier U2, a third operational amplifier U3, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a nineteenth resistor R19, and a thirty-first resistor R31. The non-inverting end of the first operational amplifier U1 is connected to one end of the second resistor R2 and one end of the eighth resistor R8, the inverting end of the first operational amplifier U1 is connected to one end of the first resistor R1 and one end of the tenth resistor R10, the output end of the first operational amplifier U1 is connected to the other end of the first resistor R1, the non-inverting end of the second operational amplifier U2 is connected to one end of the third resistor R3 and one end of the ninth resistor R9, the inverting end of the second operational amplifier U2 is connected to one end of the fourth resistor R4 and one end of the fifth resistor R5, the output end of the second operational amplifier U2 is connected to the other end of the fourth resistor R4, the non-inverting end of the third operational amplifier U3 is connected to the nineteenth resistor R19 The inverting end of the third operational amplifier U3 is connected to one end of the sixth resistor R6, the output end of the third operational amplifier U3 is connected to the other end of the sixth resistor R6, the other end of the eighth resistor R8, and the other end of the ninth resistor R9, the other end of the second resistor R2 is connected to the other end of the fifth resistor R5, one end of the seventh resistor R7, and one end of the eleventh resistor R11, the other end of the seventh resistor R7 and the other end of the nineteenth resistor R19 are connected to the power supply, and the other end of the third resistor R3, the other end of the tenth resistor R10, the other end of the eleventh resistor R11, and the other end of the thirty-first resistor R31 are connected to the ground.

[0020] like Figure 1As shown, specifically, the main control unit further includes a seventh operational amplifier U7, an eighth operational amplifier U8, a ninth operational amplifier U9, a second diode D2, a third diode D3, a fourth diode D4, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, and a twentieth resistor R20; The non-inverting terminal of the seventh operational amplifier U7 is connected to the IN / 1 terminal, the inverting terminal of the seventh operational amplifier U7 is connected to the output terminal of the third operational amplifier U3, the output terminal of the seventh operational amplifier U7 is connected to the anode of the fourth diode D4, the non-inverting terminal of the eighth operational amplifier U8 is connected to one end of the sixteenth resistor R16, one end of the eighteenth resistor R18, the cathode of the second diode D2, and the cathode of the fourth diode D4, the inverting terminal of the eighth operational amplifier U8 is connected to one end of the fifteenth resistor R15, one end of the seventeenth resistor R17, the output terminal of the eighth operational amplifier U8 is connected to the anode of the second diode D2 and the inverting terminal of the ninth operational amplifier U9, the non-inverting terminal of the ninth operational amplifier U9 is connected to one end of the twentieth resistor R20 and the anode of the third diode D3, the other end of the sixteenth resistor R16, the other end of the seventeenth resistor R17, and the other end of the twentieth resistor R20 are connected to the power supply, and the other end of the fifteenth resistor R15, the other end of the eighteenth resistor R18, the cathode of the third diode D3 and the ground terminal are connected.

[0021] like Figure 1 As shown, specifically, the main control unit further includes a fifth operational amplifier U5, a sixth operational amplifier U6, a third field effect transistor Q3, a fourteenth resistor R14, a twenty-second resistor R22, a first connector P1, and a second connector P2; The non-inverting end of the fifth operational amplifier U5, the inverting end of the sixth operational amplifier U6 and the IN / 1 end are connected, the inverting end of the fifth operational amplifier U5 is connected to the output end of the first operational amplifier U1, the output end of the fifth operational amplifier U5, one end of the twenty-second resistor R22 and the first connector P1 end are connected, the non-inverting end of the sixth operational amplifier U6 is connected to the output end of the second operational amplifier U2, the output end of the sixth operational amplifier U6, the drain of the third field-effect transistor Q3, one end of the fourteenth resistor R14 are connected to the second connector P2 end, the gate of the third field-effect transistor Q3 is connected to the output end of the ninth operational amplifier U9, and the other end of the fourteenth resistor R14, the other end of the twenty-second resistor R22, the source of the third field-effect transistor Q3 and the ground end are connected.

[0022] like Figure 1 As shown, specifically, the main control unit further includes an eleventh inverter U11, a fourth field effect transistor Q4, a seventh diode D7, a twenty-eighth resistor R28, a thirtieth resistor R30, a third connector P3, a fourth connector P4, and a fifth connector P5; The input end of the eleventh inverter U11, the drain of the fourth field-effect transistor Q4, one end of the twenty-eighth resistor R28 and the end of the third connector P3 are connected; the output end of the eleventh inverter U11, one end of the thirtieth resistor R30 and the end of the fourth connector P4 are connected; the gate of the fourth field-effect transistor Q4, the anode of the seventh diode D7 and the end of the fifth connector P5 are connected; the cathode of the seventh diode D7 and one end of the fifteenth resistor R15 are connected; the other end of the twenty-eighth resistor R28 is connected to the power supply; and the source of the fourth field-effect transistor Q4 and the other end of the thirtieth resistor R30 are connected to the ground end.

[0023] like Figure 2 As shown, specifically, the control circuit further includes an auxiliary control unit, which includes a fourth operational amplifier U4, a first field-effect transistor Q1, a second field-effect transistor Q2, a first diode D1, a first capacitor C1, a twelfth resistor R12, a thirteenth resistor R13, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, and a twenty-sixth resistor R26; The non-inverting terminal of the fourth operational amplifier U4 is connected to one end of the twenty-third resistor R23 and the anode of the first diode D1. The inverting terminal of the fourth operational amplifier U4 is connected to the source of the first field-effect transistor Q1 and one end of the thirteenth resistor R13. The output terminal of the fourth operational amplifier U4 is connected to one end of the twenty-sixth resistor R26. The gate of the first field-effect transistor Q1, the gate of the second field-effect transistor Q2, one end of the twenty-fourth resistor R24 ​​and the IN / 2 terminal are connected. The drain of the first field-effect transistor Q1 and the drain of the second field-effect transistor Q2, one end of the first capacitor C1 and one end of the twenty-fifth resistor R25 are connected. The source of the second field-effect transistor Q2 is connected to one end of the twelfth resistor R12. The other end of the twelfth resistor R12 and the other end of the twenty-third resistor R23 are connected to the power supply. The cathode of the first diode D1, the other end of the first capacitor C1, the other end of the thirteenth resistor R13, the other end of the twenty-fourth resistor R24, the other end of the twenty-fifth resistor R25 and the other end of the twenty-sixth resistor R26 are connected to the ground terminal.

[0024] like Figure 2 As shown, specifically, the auxiliary control unit further includes a tenth digital potentiometer U10, a fifth field effect transistor Q5, a fifth diode D5, a sixth diode D6, a twenty-seventh resistor R27, and a sixth connector P6; The third pin of the tenth digital potentiometer U10 is connected to the cathode of the fifth diode D5 and the cathode of the sixth diode D6, the fourth pin of the tenth digital potentiometer U10 and one end of the twenty-seventh resistor R27 are connected to the power supply, the eleventh pin of the tenth digital potentiometer U10 and the twelfth pin of the tenth digital potentiometer U10 are connected to the drain of the fifth field-effect transistor Q5 and the other end of the twenty-seventh resistor R27, the source of the fifth field-effect transistor Q5 is connected to the end of the sixth connector P6, the gate of the fifth field-effect transistor Q5 is connected to the IN / 2 end, the anode of the fifth diode D5 is connected to one end of the twenty-sixth resistor R26, the anode of the sixth diode D6 is connected to the IN / 3 end, the sixth pin of the tenth digital potentiometer U10, the tenth pin of the tenth digital potentiometer U10, and the fourteenth pin of the tenth digital potentiometer U10 are connected to the ground end.

[0025] like Figure 1 As shown, specifically, the main control unit further includes a twenty-first resistor R21; One end of the twenty-first resistor R21 is connected to the gate of the third field effect transistor Q3 , and the other end of the twenty-first resistor R21 is connected to the ground.

[0026] like Figure 1 As shown, specifically, the main control unit further includes a twenty-ninth resistor R29; One end of the twenty-ninth resistor R29 is connected to the gate of the fourth field effect transistor Q4, and the other end of the twenty-ninth resistor R29 is connected to the ground.

[0027] Specifically, the control method of the electronically controlled drug-loaded hot compress control circuit includes the following steps: Step 1: During the initial use of the drug-loaded hot compress, the drug is rapidly heated to a reference release temperature of the active ingredient of the drug, while limiting the activation of the temperature calibration mode during the rapid heating period; Step 2: Automatically establish a temperature error threshold range for effective drug release based on the reference release temperature of the drug's active ingredient; Step 3: After the rapid heating is completed, enter the temperature calibration mode and repeatedly calibrate the heating current of the drug in this mode until it stabilizes within the temperature error threshold; Step 4: After receiving the reset signal, reset the main control unit and the auxiliary control unit.

[0028] See attached Figure 1The power supply is connected to the ground terminal through the nineteenth resistor R19 and the thirty-first resistor R31. The signal at the thirty-first resistor R31 is fed back to the non-inverting terminal of the third operational amplifier U3. The amplitude of the signal at the thirty-first resistor R31 is the reference release temperature signal of the active ingredient of the drug. The amplitude of the set temperature is changed by adjusting the resistance value of the thirty-first resistor R31. The temperature is set according to the type of drug and the temperature required for its full release. The output terminal of the third operational amplifier U3 is connected to the inverting terminal of the third operational amplifier U3 through the sixth resistor R6 to prevent the output terminal of the third operational amplifier U3 from being in a negative feedback state. While the circuit signal is interfered with, it follows the output temperature reference signal. The power supply signal passes through the seventh resistor R7 and the eleventh resistor R11 to the ground terminal. The signal amplitude at the end of the eleventh resistor R11 is the offset signal of the reference release temperature signal. The smaller the offset signal amplitude, the more accurate the temperature control. The resistance value of the eleventh resistor R11 is adjusted as needed to change the offset signal amplitude. The signal at the end of the eleventh resistor R11 is fed back to the in-phase terminal of the first operational amplifier U1 through the second resistor R2. The output signal of the third operational amplifier U3 is fed back to the in-phase terminal of the first operational amplifier U1 through the eighth resistor R8. The first operational amplifier U1 The signal at the output of amplifier U1 passes through the first resistor R1 and the tenth resistor R10 to the ground terminal. The signal at the tenth resistor R10 is fed back to the inverting terminal of the first operational amplifier U1. The output of the first operational amplifier U1 outputs a reference release temperature signal in a positive incremental manner, and the amplitude of the positive increment is the amplitude of the offset signal. The signal at the output of the third operational amplifier U3 passes through the ninth resistor R9 and the third resistor R3 to the ground terminal. The signal at the third resistor R3 is fed back to the non-inverting terminal of the second operational amplifier U2. The output of the second operational amplifier U2 is negatively feedback connected to the inverting terminal of the second operational amplifier U2 through the fourth resistor R4. The signal at the eleventh resistor R11 is fed back to the inverting terminal of the second operational amplifier U2 through the fifth resistor R5. The output of the second operational amplifier U2 outputs a reference release temperature signal in a negative incremental manner, and the amplitude of the negative increment is the amplitude of the offset signal. The range between the amplitude of the signal at the output of the first operational amplifier U1 and the amplitude of the signal at the output of the second operational amplifier U2 is the temperature error threshold range for effective drug release. The temperature error threshold range for effective drug release is automatically established based on the reference release temperature of the active ingredient of the drug, providing a benchmark for precise temperature control of the lower-level circuit.

[0029] See attached Figure 1A heating unit is provided in the control circuit, and the heating unit is used to heat the electric heating patch in the medicine-loaded hot compress to increase the temperature of the medicine. The heating unit heats the electric heating patch in the hot compress and adjusts the heating current based on the signal feedback from the main control unit and the auxiliary control unit. The output signal of the third operational amplifier U3 is synchronously fed back to the inverting terminal of the seventh operational amplifier U7, and the actual temperature signal of the medicine is synchronously fed back to the non-inverting terminal of the seventh operational amplifier U7. The power supply signal passes through the seventeenth resistor R17 and the fifteenth resistor R15 to the ground terminal, and the signal at the fifteenth resistor R15 terminal is fed back to the inverting terminal of the eighth operational amplifier U8. The power supply signal passes through the sixteenth resistor R16 and the eighteenth resistor R18 to the ground terminal, and the signal at the eighteenth resistor R18 terminal is fed back To the in-phase terminal of the eighth operational amplifier U8, adjust the resistance values ​​of the fifteenth resistor R15 and the eighteenth resistor R18 so that the signal amplitude at the fifteenth resistor R15 terminal is higher than the signal amplitude at the eighteenth resistor R18 terminal and lower than a certain voltage amplitude when the eighth operational amplifier U8 is saturated and output. In the initial state of the circuit, the eighth operational amplifier U8 is in the cut-off state, and the power supply signal passes through the twentieth resistor R20 and the third diode D3 to the ground terminal. The anode terminal signal of the third diode D3 is fed back to the in-phase terminal of the ninth operational amplifier U9 so that the potential of the in-phase terminal of the ninth operational amplifier U9 is clamped at the conduction amplitude of the third diode D3. The ninth operational amplifier U9 outputs the signal. The output terminal signal of the ninth operational amplifier U9 is the heating mode signal of the medicine. This signal is fed back To the heating unit, when the ninth operational amplifier U9 outputs, the heating unit is in rapid heating mode. When the heating unit is in rapid heating mode, the heating unit quickly heats the medicine. The heating current at this time is the maximum current. When the actual temperature of the medicine is higher than the reference release temperature, the seventh operational amplifier U7 outputs, and the output terminal signal of the seventh operational amplifier U7 passes through the fourth diode D4 and the eighteenth resistor R18 to the ground terminal. The potential of the eighteenth resistor R18 rises, the eighth operational amplifier U8 outputs, the ninth operational amplifier U9 is cut off, and the heating unit stops heating the medicine. At the same time, the output terminal signal of the eighth operational amplifier U8 passes through the second diode D2 and the eighteenth resistor R18 to the ground terminal. The potential of the eighteenth resistor R18 rises. The voltage amplitude of the voltage at the saturated output of the eighth operational amplifier U8 after the voltage drop of the second diode D2 is clamped, so that after the actual temperature of the medicine is lower than the reference release temperature signal amplitude, the seventh operational amplifier U7 is cut off while the eighth operational amplifier U8 can maintain the output. At this time, the ninth operational amplifier U9 is in the cut-off state. When the ninth operational amplifier U9 is cut off, the heating unit is in the temperature calibration mode. In the temperature calibration mode, the heating signal is fed back by the auxiliary control unit, so that the medicine is quickly heated to the reference release temperature of the active ingredient of the medicine at the initial use of the drug-loaded hot compress. At the same time, the opening of the temperature calibration mode is limited during the rapid heating period, and the temperature calibration mode is automatically entered after the rapid heating is completed.

[0030] See attached Figure 1, the output signal of the first operational amplifier U1 is fed back to the inverting terminal of the fifth operational amplifier U5, the output signal of the second operational amplifier U2 is fed back to the non-inverting terminal of the sixth operational amplifier U6, IN / 1 is used to obtain the actual temperature signal of the drug, and the signal is fed back to the non-inverting terminal of the fifth operational amplifier U5 and the inverting terminal of the sixth operational amplifier U6. When the actual temperature of the drug is higher than the upper limit value of the temperature error threshold range for effective release, the fifth operational amplifier U5 outputs, and the output signal of the fifth operational amplifier U5 is connected to the ground terminal through the twenty-second resistor R22. The output signal of the fifth operational amplifier U5 is the downward adjustment signal required by the auxiliary control unit in the temperature calibration mode. When the actual temperature of the drug is lower than the lower limit value of the temperature error threshold range for effective release, the sixth operational amplifier U6 outputs, and the output signal of the sixth operational amplifier U6 is connected to the ground terminal through the fourteenth resistor R14. The output signal of the amplifier U6 is the upward adjustment signal required by the auxiliary control unit in the temperature calibration mode. The downward adjustment signal and the upward adjustment signal are both calibration signals, which are fed back to the auxiliary control unit through the first connector P1 and the second connector P2 respectively. Taking into account that the drug temperature must be lower than the reference release temperature when the drug is initially heated, the output signal of the ninth operational amplifier U9 is fed back to the gate of the third field effect transistor Q3. The twenty-first resistor R21 is used to discharge the parasitic capacitance of the gate of the third field effect transistor Q3. When the ninth operational amplifier U9 outputs, the voltage difference between the gate of the third field effect transistor Q3 and the source of the third field effect transistor Q3 is higher than the conduction threshold, and the third field effect transistor Q3 is turned on. The output signal of the sixth operational amplifier U6 passes through the drain of the third field effect transistor Q3 and the source of the third field effect transistor Q3 to the ground terminal, thereby limiting the start of the temperature calibration mode when the heating unit is in the rapid heating mode.

[0031] See attached Figure 1 , Attachment Figure 2, the power supply signal is fed back to the drain of the fourth field effect transistor Q4 and the input end of the eleventh inverter U11 through the twenty-eighth resistor R28, the input end of the eleventh inverter U11 obtains a high-level signal, the output end of the eleventh inverter U11 outputs a low level, the output end signal of the eleventh inverter U11 is connected to the ground end through the thirtieth resistor R30, the input end and output end signals of the eleventh inverter U11 are fed back to the 5th pin of the tenth digital potentiometer U10 on the two groups of auxiliary control units through the third connector P3 and the fourth connector P4 respectively, the 4th pin of the tenth digital potentiometer U10 is the clock signal input end, the 3rd pin of the tenth digital potentiometer U10 is the wake-up end, the 5th pin of the tenth digital potentiometer U10 is the signal input end, and the 1st pin of the tenth digital potentiometer U10 is the power supply. Pin 1 is a sliding terminal, and pin 12 of the tenth digital potentiometer U10 is a signal output terminal. There are two groups of auxiliary control units. One auxiliary control unit is used to receive signal feedback from the second connector P2 and the fourth connector P4 on the main control unit, and the other auxiliary control unit is used to receive signal feedback from the first connector P1 and the third connector P3 on the main control unit. IN / 2 is used to receive the calibration signal fed back by the main control unit. In the initial state of the circuit, the power supply signal passes through the twelfth resistor R12, the source of the second field-effect transistor Q2, the drain of the second field-effect transistor Q2, and the twenty-fifth resistor R25 to the ground terminal. The first capacitor C1 has a certain potential. The power supply signal passes through the twenty-third resistor R23 and the first diode D1 to the ground terminal. The anode terminal signal of the first diode D1 is fed back to the fourth operation terminal. Amplifier U4 non-inverting terminal, the fourth operational amplifier U4 output, when any auxiliary control unit obtains the calibration signal feedback, the signal is synchronously fed back to the gate of the first field effect tube Q1 and the gate of the second field effect tube Q2, the voltage difference between the gate of the second field effect tube Q2 and the source of the second field effect tube Q2 is higher than the conduction threshold, the second field effect tube Q2 is cut off, the voltage difference between the gate of the first field effect tube Q1 and the source of the first field effect tube Q1 is higher than the conduction threshold, the first field effect tube Q1 is turned on, the signal at the first capacitor C1 end passes through the drain of the first field effect tube Q1, the source of the first field effect tube Q1, and the thirteenth resistor R13 to the ground end, the potential of the first capacitor C1 drops, the signal at the thirteenth resistor R13 end is fed back to the inverting terminal of the fourth operational amplifier U4, the fourth operational amplifier U4 is cut off, and the fourth The output signal of the operational amplifier U4 is connected to the ground terminal through the twenty-sixth resistor R26. When the potential of the first capacitor C1 terminal is lower than the potential of the non-inverting terminal of the fourth operational amplifier U4, the fourth operational amplifier U4 outputs again. The output terminal of the fourth operational amplifier U4 is synchronously fed back to pin 3 of the tenth digital potentiometer U10 through the fifth diode D5. The power supply signal is connected to the ground terminal through the twenty-seventh resistor R27 and the tenth digital potentiometer U10. When the auxiliary control unit receives calibration signal feedback and pin 5 of the tenth digital potentiometer U10 on the auxiliary control unit receives signal feedback from the third connector P3 on the main control unit, the fourth operational amplifier U4 is turned off, and the tenth digital potentiometer U10 adjusts its own resistance to increase the amplitude of the signal at pin 12 of the tenth digital potentiometer U10.When the fourth operational amplifier U4 outputs again, the tenth digital potentiometer U10 stops adjusting its own resistance. When the auxiliary control unit obtains the calibration signal feedback and the 5-pin of the tenth digital potentiometer U10 on the auxiliary control unit obtains the signal feedback from the fourth connector P4 end on the main control unit, the fourth operational amplifier U4 is cut off, and the tenth digital potentiometer U10 adjusts its own resistance so that the amplitude of the signal at the 12-pin end of the tenth digital potentiometer U10 is reduced. When the fourth operational amplifier U4 outputs again, the tenth digital potentiometer U10 stops adjusting its own resistance. When any auxiliary control unit obtains the calibration signal, the signal is synchronously fed back to the gate of the fifth field effect transistor Q5, and the gate of the fifth field effect transistor Q5 and the source of the fifth field effect transistor Q5 are synchronously fed back to the gate of the fifth field effect transistor Q5. When the inter-electrode voltage difference exceeds the conduction threshold, the fifth field-effect transistor Q5 turns on. The signal at pin 12 of the tenth digital potentiometer U10 passes through the drain and source of the fifth field-effect transistor Q5 and then through the sixth connector P6 to be fed back to the heating unit. The amplitude of the signal at pin 12 of the tenth digital potentiometer U10 is the heating signal required by the heating unit in temperature calibration mode. The higher the signal amplitude, the greater the heating current output by the heating unit. The single adjustment amount is controlled by adjusting the capacitance of the first capacitor C1. The smaller the capacitance of the first capacitor C1, the smaller the single adjustment amount. In this way, when any auxiliary control unit receives the calibration signal, the heating current output by the heating unit can be adjusted in a controllable manner.

[0032] See attached Figure 2In the initial state of the circuit, the auxiliary control unit that receives signal feedback from the fourth connector P4 has a certain signal amplitude at the 12-pin end of the tenth digital potentiometer U10 on the unit. The auxiliary control unit that receives signal feedback from the third connector P3 has a ground potential at the 12-pin end of the tenth digital potentiometer U10 on the unit. When the heating unit initially heats the medicine and the actual temperature of the medicine is higher than the reference release temperature, the ninth operational amplifier U9 is cut off, and the heating unit enters the temperature calibration mode. At this time, the temperature of the medicine begins to drop. When the actual temperature of the medicine is lower than the lower limit of the temperature error threshold range for effective release, the sixth operational amplifier U6 outputs and feeds back a calibration signal to the auxiliary control unit connected thereto through the second connector P2. The tenth digital potentiometer U10 on the auxiliary control unit adjusts its own resistance to reduce the signal amplitude at the 12-pin end of the tenth digital potentiometer U10. At the same time, the fifth field effect transistor Q5 is turned on, and the signal at the 12-pin end of the tenth digital potentiometer U10 is fed back to the heating unit via the fifth field effect transistor Q5 and the sixth connector P6. When the heating unit receives the signal feedback, the heating unit adjusts the heating potentiometer based on the signal amplitude. The current is synchronously adjusted. After the adjustment is completed, the heating unit outputs a constant current. At this time, the actual temperature of the medicine rises. When the actual temperature of the medicine is higher than the lower limit of the temperature error threshold range for effective release, the sixth operational amplifier U6 is turned off, the first field effect transistor Q1 is turned off, and the second field effect transistor Q2 is turned on. The potential at the first capacitor C1 returns to the initial potential. When the actual temperature of the medicine is higher than the upper limit of the temperature error threshold range for effective release, the fifth operational amplifier U5 outputs and feeds back a calibration signal to the auxiliary control unit connected thereto through the first connector P1. The tenth digital potentiometer U10 on the auxiliary control unit adjusts its own resistance to increase the amplitude of the signal at the 12-pin end of the tenth digital potentiometer U10. The signal is fed back to the heating unit through the sixth connector P6. The heating unit synchronously adjusts the heating current again based on the signal amplitude. After the adjustment is completed, the heating unit outputs a constant current again. In this way, the heating current of the medicine is repeatedly calibrated based on the temperature error threshold range for effective release until it stabilizes within the temperature error threshold range, thereby improving temperature control accuracy and preventing changes in the use environment from causing the medicine to be in an overheated / underheated state, thereby affecting the treatment effect.

[0033] See attached Figure 1 , Attachment Figure 2The reset signal is fed back by the user or the terminal. When the reset signal is fed back, the terminal cuts off the power supply signal of the heating unit. At the same time, the fifth connector P5 on the main control unit synchronously receives the reset signal. When the fifth connector P5 receives the signal feedback, the signal passes through the seventh diode D7 and the fifteenth resistor R15 to the ground terminal. The potential of the fifteenth resistor R15 rises, the eighth operational amplifier U8 is cut off, and the signal of the fifth connector P5 is fed back to the gate of the fourth field effect transistor Q4. The twenty-ninth resistor R29 is used to discharge the parasitic capacitance of the gate of the fourth field effect transistor Q4. The voltage difference between the gate of the fourth field effect transistor Q4 and the source of the fourth field effect transistor Q4 is higher than the conduction threshold. The fourth field effect transistor Q4 is turned on, and the signal at the input end of the eleventh inverter U11 passes through the drain of the fourth field effect transistor Q4 and the source of the fourth field effect transistor Q4 to the ground end. At this time, the signal at the input end of the eleventh inverter U11 is low level, and the signal at the output end of the eleventh inverter U11 is high level. The levels of pin 5 of the tenth digital potentiometer U10 on the two groups of auxiliary control units are swapped. At the same time, IN / 3 on the two groups of auxiliary control units synchronously receives the signal feedback from the fifth connector P5 end, and the signal is fed back to pin 10 of the tenth digital potentiometer U10 through the sixth diode D6. The tenth digital potentiometer U10 on the two groups of auxiliary control units adjusts its own resistance to reset its pin 12 to the initial state.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed therein. Any reference in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An electrically controlled drug-loaded hot compress patch, characterized in that: It includes a drug-loaded hot compress patch and a controller, which are connected to the controller. The drug-loaded hot compress patch includes a drug-loaded layer, a heating layer, and a fixing belt. The heating layer is arranged on the drug-loaded layer, and the fixing belt is arranged on the heating layer. The type of drug in the drug-loaded layer is selected based on user needs. The drug-loaded layer and the heating layer are detachably connected. A plurality of electric heating patches are arranged on the heating layer. The heating layer is used to heat the drug-loaded layer. The fixing belt is used to fit and fix the drug-loaded layer to the human skin. The controller controls the heating of the electric heating patches in the heating layer based on the effective release temperature of the drug on the drug-loaded layer.

2. An electronically controlled drug-loaded hot compress control circuit, characterized in that: The control circuit includes a main control unit and a heating unit, the main control unit is used to feedback a heating mode signal and establish a temperature error threshold range for effective release of the drug based on a reference release temperature of the active ingredient of the drug, and the heating unit is used to heat the electric heating patch in the drug-loaded hot compress to increase the temperature of the drug, and the main control unit includes a first operational amplifier, a second operational amplifier, a third operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a nineteenth resistor, and a thirty-first resistor; The non-inverting terminal of the first operational amplifier is connected to one end of the second resistor and one end of the eighth resistor, the inverting terminal of the first operational amplifier is connected to one end of the first resistor and one end of the tenth resistor, the output terminal of the first operational amplifier is connected to the other end of the first resistor, the non-inverting terminal of the second operational amplifier is connected to one end of the third resistor and one end of the ninth resistor, the inverting terminal of the second operational amplifier is connected to one end of the fourth resistor and one end of the fifth resistor, the output terminal of the second operational amplifier is connected to the other end of the fourth resistor, the non-inverting terminal of the third operational amplifier is connected to one end of the nineteenth resistor and one end of the thirty-first resistor, the inverting terminal of the third operational amplifier is connected to one end of the sixth resistor, the output terminal of the third operational amplifier is connected to the other end of the sixth resistor, the other end of the eighth resistor, and the other end of the ninth resistor, the other end of the second resistor is connected to the other end of the fifth resistor, one end of the seventh resistor, and one end of the eleventh resistor, the other end of the seventh resistor and the other end of the nineteenth resistor are connected to the power supply, and the other end of the third resistor, the other end of the tenth resistor, the other end of the eleventh resistor, and the other end of the thirty-first resistor are connected to ground.

3. The electronically controlled drug-loaded hot compress control circuit according to claim 2, characterized in that: The main control unit further includes a seventh operational amplifier, an eighth operational amplifier, a ninth operational amplifier, a second diode, a third diode, a fourth diode, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, and a twentieth resistor; The non-inverting terminal of the seventh operational amplifier is connected to the IN / 1 terminal, the inverting terminal of the seventh operational amplifier is connected to the output terminal of the third operational amplifier, the output terminal of the seventh operational amplifier is connected to the anode of the fourth diode, the non-inverting terminal of the eighth operational amplifier is connected to one end of the sixteenth resistor, one end of the eighteenth resistor, the cathode of the second diode, and the cathode of the fourth diode, the inverting terminal of the eighth operational amplifier is connected to one end of the fifteenth resistor and one end of the seventeenth resistor, the output terminal of the eighth operational amplifier is connected to the anode of the second diode and the inverting terminal of the ninth operational amplifier, the non-inverting terminal of the ninth operational amplifier is connected to one end of the twenty-first resistor and the anode of the third diode, the other end of the sixteenth resistor, the other end of the seventeenth resistor, the other end of the twentieth resistor are connected to the power supply, and the other end of the fifteenth resistor, the other end of the eighteenth resistor, the cathode of the third diode and the ground terminal are connected.

4. The electronically controlled drug-loaded hot compress control circuit according to claim 2, characterized in that: The main control unit further includes a fifth operational amplifier, a sixth operational amplifier, a third field effect transistor, a fourteenth resistor, a twenty-second resistor, a first connector, and a second connector; The non-inverting terminal of the fifth operational amplifier, the inverting terminal of the sixth operational amplifier and the IN / 1 terminal are connected, the inverting terminal of the fifth operational amplifier is connected to the output terminal of the first operational amplifier, the output terminal of the fifth operational amplifier, one end of the twenty-second resistor and the first connector terminal are connected, the non-inverting terminal of the sixth operational amplifier is connected to the output terminal of the second operational amplifier, the output terminal of the sixth operational amplifier, the drain of the third field-effect transistor, one end of the fourteenth resistor are connected to the second connector terminal, the gate of the third field-effect transistor is connected to the output terminal of the ninth operational amplifier, and the other end of the fourteenth resistor, the other end of the twenty-second resistor, the source of the third field-effect transistor and the ground terminal are connected.

5. The electronically controlled drug-loaded hot compress control circuit according to claim 3, characterized in that: The main control unit further includes an eleventh inverter, a fourth field effect transistor, a seventh diode, a twenty-eighth resistor, a thirtieth resistor, a third connector, a fourth connector, and a fifth connector; The input end of the eleventh inverter, the drain of the fourth field-effect transistor, one end of the twenty-eighth resistor and the third connector end are connected; the output end of the eleventh inverter, one end of the thirtieth resistor and the fourth connector end are connected; the gate of the fourth field-effect transistor, the anode of the seventh diode and the fifth connector end are connected; the cathode of the seventh diode and one end of the fifteenth resistor are connected; the other end of the twenty-eighth resistor is connected to the power supply; and the source of the fourth field-effect transistor, the other end of the thirtieth resistor and the ground end are connected.

6. The electronically controlled drug-loaded hot compress control circuit according to claim 2, characterized in that: The control circuit further includes an auxiliary control unit, the auxiliary control unit including a fourth operational amplifier, a first field effect transistor, a second field effect transistor, a first diode, a first capacitor, a twelfth resistor, a thirteenth resistor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, and a twenty-sixth resistor; The non-inverting end of the fourth operational amplifier is connected to one end of the twenty-third resistor and the anode of the first diode, the inverting end of the fourth operational amplifier is connected to the source of the first field-effect transistor and one end of the thirteenth resistor, the output end of the fourth operational amplifier is connected to one end of the twenty-sixth resistor, the gate of the first field-effect transistor, the gate of the second field-effect transistor, one end of the twenty-fourth resistor and the IN / 2 end are connected, the drain of the first field-effect transistor and the drain of the second field-effect transistor, one end of the first capacitor and one end of the twenty-fifth resistor are connected, the source of the second field-effect transistor is connected to one end of the twelfth resistor, the other end of the twelfth resistor and the other end of the twenty-third resistor are connected to the power supply, and the cathode of the first diode, the other end of the first capacitor, the other end of the thirteenth resistor, the other end of the twenty-fourth resistor, the other end of the twenty-fifth resistor, the other end of the twenty-sixth resistor and the ground end are connected.

7. The electronically controlled drug-loaded hot compress control circuit according to claim 6, characterized in that: The auxiliary control unit further includes a tenth digital potentiometer, a fifth field effect transistor, a fifth diode, a sixth diode, a twenty-seventh resistor, and a sixth connector; The third pin of the tenth digital potentiometer is connected to the cathode of the fifth diode and the cathode of the sixth diode, the fourth pin of the tenth digital potentiometer and one end of the twenty-seventh resistor are connected to the power supply, the eleventh pin of the tenth digital potentiometer and the twelfth pin of the tenth digital potentiometer are connected to the drain of the fifth field-effect transistor and the other end of the twenty-seventh resistor, the source of the fifth field-effect transistor is connected to the sixth connector end, the gate of the fifth field-effect transistor is connected to the IN / 2 end, the anode of the fifth diode is connected to one end of the twenty-sixth resistor, the anode of the sixth diode is connected to the IN / 3 end, and the sixth pin of the tenth digital potentiometer, the tenth pin of the tenth digital potentiometer and the fourteenth pin of the tenth digital potentiometer are connected to the ground end.

8. The electronically controlled drug-loaded hot compress control circuit according to claim 4, characterized in that: The main control unit further includes a twenty-first resistor; One end of the twenty-first resistor is connected to the gate of the third field effect transistor, and the other end of the twenty-first resistor is connected to the ground.

9. The electronically controlled drug-loaded hot compress control circuit according to claim 5, characterized in that: The main control unit further includes a twenty-ninth resistor; One end of the twenty-ninth resistor is connected to the gate of the fourth field effect transistor, and the other end of the twenty-ninth resistor is connected to the ground end.

10. A method for controlling a control circuit of an electrically controlled drug-loaded hot compress patch according to any one of claims 2 to 9, characterized in that: The method includes the following steps: Step 1: During the initial use of the drug-loaded hot compress, the drug is rapidly heated to a reference release temperature of the active ingredient of the drug, while limiting the activation of the temperature calibration mode during the rapid heating period; Step 2: Automatically establish a temperature error threshold range for effective drug release based on the reference release temperature of the drug's active ingredient; Step 3: After the rapid heating is completed, enter the temperature calibration mode and repeatedly calibrate the heating current of the drug in this mode until it stabilizes within the temperature error threshold; Step 4: After receiving the reset signal, reset the main control unit and the auxiliary control unit.

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