An electrically controlled drug-loaded hot compress patch, a control circuit and a control method

Abstract

The application discloses an electrically-controlled drug-loaded hot compress patch, a control circuit and a control method. The control circuit comprises 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 comprises a drug-loaded layer, a heating layer and a fixing belt. The heating layer is arranged on the drug-loaded layer. The fixing belt is arranged on the heating layer. The drug type of the drug-loaded layer is selected based on user demand. 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 for heating the drug-loaded layer. The fixing belt is used for fixing the drug-loaded layer to the human skin. The controller controls the electric heating patches in the heating layer based on the effective release temperature of the drug on the drug-loaded layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature control of drug-loaded hot compress patches, in particular to an electrically controlled drug-loaded hot compress patch, a control circuit and a control method. BACKGROUND

[0002] The drug-loaded hot compress patch can achieve the treatment effects of warming meridians, unblocking qi and blood, dispelling wind and dampness, etc. through the combined action of drug force and heat force. Due to the difference in drug types of the drug-loaded hot compress patch, the release temperature of the effective components of the drugs is also different. When the drugs are overheated, the traditional Chinese medicine components will be destroyed, and vice versa, when the temperature is low, the effective components of the drugs may not be fully released. Patent No. CN114732591B discloses an electrically controlled multi-effect hot compress patch. The electrically controlled hot compress patch can heat the heating sheet by energizing the heating sheet, thereby achieving the heating of the drugs and the electric treatment. The heating sheet is maintained at a temperature range by a temperature controller to prevent the human body from being scalded. However, the electrically controlled hot compress patch cannot quickly heat the drugs to the reference release temperature of the effective components of the drugs at the initial stage of use of the drug-loaded hot compress patch, automatically establish a temperature error threshold range for the effective release of the drugs based on the reference release temperature of the effective components of the drugs, and repeatedly calibrate the heating current of the drugs based on this until it is stable within the temperature error threshold range, so as to improve the temperature control precision and prevent the change of the use environment from causing the drugs to be in an overheated / low-temperature state, thereby affecting the treatment effect. SUMMARY

[0003] In view of the above technical problems, the purpose of the present application is to provide an electrically controlled drug-loaded hot compress patch, which comprises 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 comprises 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 drug type of the drug-loaded layer is selected based on user demand. 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 for heating the drug-loaded layer. The fixing belt is used for fixing 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 of the effective release of the drugs on the drug-loaded layer.

[0004] Further, the control circuit comprises a main control unit and a heating unit. The main control unit is used for feeding back a heating mode signal and establishing a temperature error threshold range for the effective release of the drugs based on the reference release temperature of the effective components of the drugs. The heating unit is used for heating the electric heating patches in the drug-loaded hot compress patch to heat the drugs. The main control unit comprises 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 and a thirty-first resistor R31.

[0005] The first operational amplifier U1 is connected with the first resistance R1, the second resistance R2, the eighth resistance R8 and the third resistance R3, the fourth resistance R4, the sixth resistance R6, the seventh resistance R7, the ninth resistance R9, the tenth resistance R10, the eleventh resistance R11 and the thirty-first resistance R31.

[0006] Further, the main control unit further comprises 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 resistance R15, a sixteenth resistance R16, a seventeenth resistance R17, an eighteenth resistance R18 and a twentieth resistance R20.

[0007] The seventh operational amplifier U7 is connected with the IN / 1 and the sixth resistance R6, the eighth operational amplifier U8 is connected with the second diode D2, the fourth diode D4, the ninth operational amplifier U9 is connected with the third diode D3, and the fifteenth resistance R15, the seventeenth resistance R17, the eighteenth resistance R18 and the ground are connected with the fourth diode D4.

[0008] Further, the master control unit further comprises 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, a second connector P2;

[0009] The fifth operational amplifier U5 is connected with the IN / 1 terminal, the sixth operational amplifier U6 and the output terminal of the first operational amplifier U1, and the output terminal of the fifth operational amplifier U5 is connected with the first connector P1 and the twenty-second resistor R22.

[0010] Further, the master control unit further comprises 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, a fifth connector P5.

[0011] The eleventh inverter U11 is connected with the fourth field effect transistor Q4, the twenty-eighth resistor R28 and the third connector P3, and the output terminal of the eleventh inverter U11 is connected with the fourth connector P4 and the thirtieth resistor R30.

[0012] Further, the control circuit further comprises an auxiliary control unit, and the auxiliary control unit comprises 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.

[0013] The fourth operational amplifier U4 is connected with the anode of the first diode D1 and one end of the twenty-third resistor R23, the fourth operational amplifier U4 is connected with the source of the first field effect tube Q1 and one end of the thirteenth resistor R13, the fourth operational amplifier U4 is connected with one end of the twenty-sixth resistor R26, the gate of the first field effect tube Q1 and the gate of the second field effect tube Q2 and one end of the twenty-fourth resistor R24 are connected with the IN / 2, the drain of the first field effect tube Q1 and the drain of the second field effect tube Q2 and 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 tube Q2 is connected with one end of the twelfth resistor R12, the other end of the twelfth resistor R12, the other end of the twenty-third resistor R23 and the power supply are connected, 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, the other end of the twenty-sixth resistor R26 and the ground are connected.

[0014] Further, the auxiliary control unit further comprises a tenth digital potentiometer U10, a fifth field effect tube Q5, a fifth diode D5, a sixth diode D6, a twenty-seventh resistor R27 and a sixth connector P6.

[0015] The third pin of the tenth digital potentiometer U10 is connected with the cathode of the fifth diode D5 and the cathode of the sixth diode D6, the fourth pin of the tenth digital potentiometer U10 is connected with one end of the twenty-seventh resistor R27 and the power supply, the eleventh pin of the tenth digital potentiometer U10, the twelfth pin of the tenth digital potentiometer U10 and the drain of the fifth field effect tube Q5 and the other end of the twenty-seventh resistor R27 are connected, the source of the fifth field effect tube Q5 is connected with the sixth connector P6, the gate of the fifth field effect tube Q5 is connected with the IN / 2, the anode of the fifth diode D5 is connected with one end of the twenty-sixth resistor R26, the anode of the sixth diode D6 is connected with the IN / 3, the sixth pin of the tenth digital potentiometer U10, the tenth pin of the tenth digital potentiometer U10, the fourteenth pin of the tenth digital potentiometer U10 and the ground are connected.

[0016] Further, the main control unit further comprises a twenty-first resistor R21.

[0017] One end of the twenty-first resistor R21 is connected with the gate of the third field effect tube Q3, and the other end of the twenty-first resistor R21 is connected with the ground.

[0018] Further, the main control unit further comprises a twenty-ninth resistor R29.

[0019] One end of the twenty-ninth resistor R29 is connected with the gate of the fourth field effect tube Q4, and the other end of the twenty-ninth resistor R29 is connected with the ground.

[0020] Further, the control method of the electrically controlled drug-loaded hot compress patch control circuit comprises the following steps.

[0021] Step 1: in the initial stage of use of the drug-loaded hot compress patch, the drug is rapidly heated to a reference release temperature of the effective component of the drug, and the opening of the temperature calibration mode is limited during the rapid heating;

[0022] Step 2: automatically establishing a temperature error threshold range of the effective release of the drug based on the reference release temperature of the effective component of the drug;

[0023] Step 3: after the rapid heating is completed, entering the temperature calibration mode, and repeatedly calibrating the heating current of the drug in the mode until it is stable in the temperature error threshold range;

[0024] Step 4: after obtaining a reset signal, resetting the main control unit and the auxiliary control unit.

[0025] The beneficial effects of the present application compared with the prior art are:

[0026] The present application can rapidly heat the drug to a reference release temperature of the effective component of the drug in the initial stage of use of the drug-loaded hot compress patch, and automatically establish a temperature error threshold range of the effective release of the drug based on the reference release temperature of the effective component of the drug after the rapid heating is completed, and repeatedly calibrate the heating current of the drug based on this until it is stable in the temperature error threshold range, thereby improving the temperature control precision, preventing the change of the use environment from causing the drug to be in an over-temperature / low-temperature state, and affecting the treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the prior art and the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The main control unit circuit structure diagram provided by the present application.

[0029] Figure 2 The auxiliary control unit circuit structure diagram provided by the present application. DETAILED DESCRIPTION

[0030] In order to make the objects and advantages of the present application more clear, the following will specifically describe the present application with embodiments, and it should be understood that the following text is only used to describe one or several specific embodiments of the present application, and does not strictly limit the specific protection scope of the present application.

[0031] The application discloses an electrically controlled drug-loaded hot compress patch, which comprises a drug-loaded hot compress patch and a controller, and the drug-loaded hot compress patch and the controller are connected.

[0032] As shown in the figure, in particular, the control circuit comprises a master control unit and a heating unit, the master control unit is used for feeding back a heating mode signal and establishing a temperature error threshold range of effective release of a drug active ingredient based on a reference release temperature of the drug active ingredient, and the heating unit is used for heating electric heating patches in the drug-loaded hot compress patch to warm up the drug. Figure 1 The master control unit comprises 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 and a thirty-first resistor R31.

[0033] The same-phase end of the first operational amplifier U1 is connected with one end of the second resistor R2 and one end of the eighth resistor R8, the opposite-phase end of the first operational amplifier U1 is connected with 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 with the other end of the first resistor R1, the same-phase end of the second operational amplifier U2 is connected with one end of the third resistor R3 and one end of the ninth resistor R9, the opposite-phase end of the second operational amplifier U2 is connected with 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 with the other end of the fourth resistor R4, the same-phase end of the third operational amplifier U3 is connected with one end of the nineteenth resistor R19 and one end of the thirty-first resistor R31, the opposite-phase end of the third operational amplifier U3 is connected with one end of the sixth resistor R6, the output end of the third operational amplifier U3 is connected with 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 with 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 with a 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 with a grounding end.

[0034] As shown in the figure, in particular, the control circuit comprises a master control unit and a heating unit, the master control unit is used for feeding back a heating mode signal and establishing a temperature error threshold range of effective release of a drug active ingredient based on a reference release temperature of the drug active ingredient, and the heating unit is used for heating electric heating patches in the drug-loaded hot compress patch to warm up the drug. Figure 1As shown, specifically, the master control unit further comprises 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, a twentieth resistor R20;

[0035] The seventh operational amplifier U7 is connected with the IN / 1 end and the non-inverting input terminal, the inverting input terminal of the seventh operational amplifier U7 is connected with the output terminal of the third operational amplifier U3, the output terminal of the seventh operational amplifier U7 is connected with the anode of the fourth diode D4, the non-inverting input terminal of the eighth operational amplifier U8 is connected with 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 input terminal of the eighth operational amplifier U8 is connected with one end of the fifteenth resistor R15 and one end of the seventeenth resistor R17, the output terminal of the eighth operational amplifier U8 is connected with the anode of the second diode D2 and the inverting input terminal of the ninth operational amplifier U9, the non-inverting input terminal of the ninth operational amplifier U9 is connected with 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, the other end of the twentieth resistor R20 are connected with the power supply, the other end of the fifteenth resistor R15, the other end of the eighteenth resistor R18, the cathode of the third diode D3 are connected with the ground.

[0036] As shown in the figure, Figure 1 Specifically, the master control unit further comprises 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, a second connector P2.

[0037] The non-inverting input terminal of the fifth operational amplifier U5, the inverting input terminal of the sixth operational amplifier U6 and the IN / 1 end are connected, the inverting input terminal of the fifth operational amplifier U5 is connected with the output terminal of the first operational amplifier U1, the output terminal of the fifth operational amplifier U5, one end of the twenty-second resistor R22 and the end of the first connector P1 are connected, the non-inverting input terminal of the sixth operational amplifier U6 is connected with the output terminal of the second operational amplifier U2, the output terminal of the sixth operational amplifier U6, one end of the fourteenth resistor R14, the end of the second connector P2 and the drain of the third field effect transistor Q3 are connected, the gate of the third field effect transistor Q3 is connected with the output terminal of the ninth operational amplifier U9, 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 are connected.

[0038] As shown in the figure, Figure 1 Specifically, the master control unit further comprises 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, a fifth connector P5.

[0039] The eleventh inverter U11 input end, the fourth field effect tube Q4 drain, the twenty-eighth resistance R28 one end and the third connector P3 end are connected, the eleventh inverter U11 output end, the thirtieth resistance R30 one end and the fourth connector P4 end are connected, the fourth field effect tube Q4 gate, the seventh diode D7 anode and the fifth connector P5 end are connected, the seventh diode D7 cathode and the fifteenth resistance R15 one end are connected, the twenty-eighth resistance R28 other end and the power supply are connected, the fourth field effect tube Q4 source, the thirtieth resistance R30 other end and the ground end are connected.

[0040] As shown in Figure 2 Specifically, the control circuit further comprises an auxiliary control unit, and the auxiliary control unit comprises a fourth operational amplifier U4, a first field effect tube Q1, a second field effect tube Q2, a first diode D1, a first capacitor C1, a twelfth resistance R12, a thirteenth resistance R13, a twenty-third resistance R23, a twenty-fourth resistance R24, a twenty-fifth resistance R25, a twenty-sixth resistance R26.

[0041] The fourth operational amplifier U4 noninverting input end and the twenty-third resistance R23 one end, the first diode D1 anode are connected, the fourth operational amplifier U4 inverting input end and the first field effect tube Q1 source, the thirteenth resistance R13 one end are connected, the fourth operational amplifier U4 output end and the twenty-sixth resistance R26 one end are connected, the first field effect tube Q1 gate, the second field effect tube Q2 gate, the twenty-fourth resistance R24 one end and the IN / 2 end are connected, the first field effect tube Q1 drain and the second field effect tube Q2 drain, the first capacitor C1 one end, the twenty-fifth resistance R25 one end are connected, the second field effect tube Q2 source and the twelfth resistance R12 one end are connected, the twelfth resistance R12 other end, the twenty-third resistance R23 other end and the power supply are connected, the first diode D1 cathode, the first capacitor C1 other end, the thirteenth resistance R13 other end, the twenty-fourth resistance R24 other end, the twenty-fifth resistance R25 other end, the twenty-sixth resistance R26 other end and the ground end are connected.

[0042] As shown in Figure 2 Specifically, the auxiliary control unit further comprises a tenth digital potentiometer U10, a fifth field effect tube Q5, a fifth diode D5, a sixth diode D6, a twenty-seventh resistance R27, a sixth connector P6.

[0043] The third pin of the tenth digital potentiometer U10 and the cathode of the fifth diode D5 and the cathode of the sixth diode D6 are connected, the fourth pin of the tenth digital potentiometer U10, one end of the twenty-seventh resistor R27 and the power supply are connected, the eleventh pin of the tenth digital potentiometer U10, the twelfth pin of the tenth digital potentiometer U10 and the drain of the fifth field effect tube Q5 and the other end of the twenty-seventh resistor R27 are connected, the source of the fifth field effect tube Q5 and the end of the sixth connector P6 are connected, the gate of the fifth field effect tube Q5 and the IN / 2 end are connected, the anode of the fifth diode D5 and one end of the twenty-sixth resistor R26 are connected, the anode of the sixth diode D6 and the IN / 3 end are connected, the sixth pin of the tenth digital potentiometer U10, the tenth pin of the tenth digital potentiometer U10, the fourteenth pin of the tenth digital potentiometer U10 and the ground end are connected.

[0044] As shown in Figure 1 , in particular, the master control unit further comprises a twenty-first resistor R21;

[0045] The one end of the twenty-first resistor R21 and the gate of the third field effect tube Q3 are connected, and the other end of the twenty-first resistor R21 and the ground end are connected.

[0046] As shown in Figure 1 , in particular, the master control unit further comprises a twenty-ninth resistor R29;

[0047] The one end of the twenty-ninth resistor R29 and the gate of the fourth field effect tube Q4 are connected, and the other end of the twenty-ninth resistor R29 and the ground end are connected.

[0048] In particular, the control method of the electrically controlled drug-loaded hot compress patch control circuit comprises the following steps:

[0049] Step 1: At the initial stage of use of the drug-loaded hot compress patch, the drug is rapidly heated to a reference release temperature of the effective ingredient of the drug, and the opening of the temperature calibration mode is limited during the rapid heating;

[0050] Step 2: Automatically establish a temperature error threshold range for the effective release of the drug based on the reference release temperature of the effective ingredient of the drug;

[0051] 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 is stable within the temperature error threshold range;

[0052] Step 4: After obtaining the reset signal, reset the master control unit and the auxiliary control unit.

[0053] Referring to the accompanying Figure 1, the power supply is connected to the ground through the nineteenth resistor R19 and the thirty-first resistor R31, the signal at the end of the thirty-first resistor R31 is fed back to the same-phase end of the third operational amplifier U3, the signal at the end of the thirty-first resistor R31 is the reference release temperature signal of the active ingredient of the medicine, the resistance value of the thirty-first resistor R31 is adjusted to change the amplitude of the set temperature, and the temperature required for sufficient release of the medicine is set according to the type of the medicine, the output end of the third operational amplifier U3 is connected to the negative feedback connection of the sixth resistor R6 and the inverting end of the third operational amplifier U3, so that the output end of the third operational amplifier U3 follows the output temperature reference signal while preventing signal interference of the lower circuit, the power supply signal is connected to the ground through the seventh resistor R7 and the eleventh resistor R11, the signal amplitude at the end of the eleventh resistor R11 is the offset signal of the reference release temperature signal, the smaller the amplitude of the offset signal, the more accurate the temperature control, the resistance value of the eleventh resistor R11 is adjusted to change the amplitude of the offset signal, the signal at the end of the eleventh resistor R11 is fed back to the same-phase end of the first operational amplifier U1 through the second resistor R2, the signal at the output end of the third operational amplifier U3 is fed back to the same-phase end of the first operational amplifier U1 through the eighth resistor R8, the signal at the output end of the first operational amplifier U1 is connected to the ground through the first resistor R1 and the tenth resistor R10, the signal at the end of the tenth resistor R10 is fed back to the inverting end of the first operational amplifier U1, the output end of the first operational amplifier U1 positively increments the output of the reference release temperature signal, and the amplitude of the positive increment is the amplitude of the offset signal, the signal at the output end of the third operational amplifier U3 is connected to the ground through the ninth resistor R9 and the third resistor R3, the signal at the end of the third resistor R3 is fed back to the same-phase end of the second operational amplifier U2, the output end of the second operational amplifier U2 is connected to the negative feedback connection of the fourth resistor R4 and the inverting end of the second operational amplifier U2, the signal at the end of the eleventh resistor R11 is fed back to the inverting end of the second operational amplifier U2 through the fifth resistor R5, the output end of the second operational amplifier U2 negatively increments the output of the reference release temperature signal, and the amplitude of the negative increment is the amplitude of the offset signal, the signal amplitude between the output end of the first operational amplifier U1 and the output end of the second operational amplifier U2 is the temperature error threshold range of the effective release of the medicine, and the temperature error threshold range of the effective release of the medicine is automatically established based on the reference release temperature of the active ingredient of the medicine, so as to provide a reference for accurate temperature control of the lower circuit.

[0054] Referring to the accompanying drawings Figure 1, control circuit is provided with a heating unit, the heating unit is used for heating the electric heating patch in the drug hot compress patch to make the drug warm, the heating unit is based on the signal feedback of the main control unit and the auxiliary control unit to heat the electric heating patch in the hot compress patch and adjust the heating current, the signal of the third operational amplifier U3 output end is synchronously fed back to the inverting input terminal of the seventh operational amplifier U7, the actual temperature signal of the drug is synchronously fed back to the non-inverting input terminal of the seventh operational amplifier U7, the power supply signal is fed to the ground through the seventeenth resistor R17 and the fifteenth resistor R15, the signal of the fifteenth resistor R15 end is fed back to the inverting input terminal of the eighth operational amplifier U8, the power supply signal is fed to the ground through the sixteenth resistor R16 and the eighteenth resistor R18, the signal of the eighteenth resistor R18 end is fed back to the non-inverting input terminal of the eighth operational amplifier U8, the resistance values of the fifteenth resistor R15 and the eighteenth resistor R18 are adjusted so that the signal amplitude of the fifteenth resistor R15 end is higher than the signal amplitude of the eighteenth resistor R18 end and lower than a certain amplitude of the voltage when the eighth operational amplifier U8 is saturated, the eighth operational amplifier U8 is in the cut-off state in the initial state of the circuit, the power supply signal is fed to the ground through the twentieth resistor R20 and the third diode D3, the signal of the anode end of the third diode D3 is fed back to the non-inverting input terminal of the ninth operational amplifier U9 so that the potential of the non-inverting input 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 of the output end of the ninth operational amplifier U9 is the heating mode signal of the drug, the signal is fed back to the heating unit, when the ninth operational amplifier U9 outputs, the heating unit is in the fast heating mode, when the heating unit is in the fast heating mode, the heating unit rapidly heats the drug, and the heating current at this time is the maximum current, when the actual temperature of the drug is higher than the reference release temperature, the seventh operational amplifier U7 outputs, the signal of the output end of the seventh operational amplifier U7 is fed to the ground through the fourth diode D4 and the eighteenth resistor R18, the potential of the eighteenth resistor R18 end rises, the eighth operational amplifier U8 outputs, the ninth operational amplifier U9 is cut off, and the heating unit stops heating the drug, at the same time, the signal of the output end of the eighth operational amplifier U8 is fed to the ground through the second diode D2 and the eighteenth resistor R18, and the potential of the eighteenth resistor R18 end is clamped at the voltage amplitude after the voltage of the eighth operational amplifier U8 saturated output is dropped by the second diode D2, so that when the actual temperature of the drug is lower than the signal amplitude of the reference release temperature, the seventh operational amplifier U7 is cut off, and the eighth operational amplifier U8 can maintain 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 in the initial period of use of the drug hot compress patch, the drug is rapidly heated to make the drug warm to the reference release temperature of the effective component of the drug, at the same time, the opening of the temperature calibration mode is limited during the rapid heating, and after the rapid heating is completed, the temperature calibration mode is automatically entered.

[0055] Refer to the accompanying Figure 1, the first operational amplifier U1 output signal feedback to the fifth operational amplifier U5 inverter terminal, the second operational amplifier U2 output signal feedback to the sixth operational amplifier U6 same phase terminal, IN / 1 for obtaining the actual temperature signal of the drug, the signal feedback to the fifth operational amplifier U5 same phase terminal and the sixth operational amplifier U6 inverter terminal, when the actual temperature of the drug is higher than the upper limit value of the effective release temperature error threshold range, the fifth operational amplifier U5 output, the fifth operational amplifier U5 output signal through the twenty-second resistance R22 to the ground terminal, the fifth operational amplifier U5 output signal is the required down signal of 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 effective release temperature error threshold range, the sixth operational amplifier U6 output, the sixth operational amplifier U6 output signal through the fourteenth resistance R14 to the ground terminal, the sixth operational amplifier U6 output signal is the required up signal of the auxiliary control unit in the temperature calibration mode, the down signal and the up signal are calibration signals, the signal is respectively fed back to the auxiliary control unit through the first connector P1, the second connector P2, considering that the drug temperature must be lower than the reference release temperature when the drug is initially heated, the ninth operational amplifier U9 output signal feedback to the third field effect tube Q3 gate, the twenty-first resistance R21 is used for bleeding the parasitic capacitance of the third field effect tube Q3 gate, when the ninth operational amplifier U9 output, the third field effect tube Q3 gate and the third field effect tube Q3 source electrode interval voltage difference is higher than the conduction threshold, the third field effect tube Q3 is turned on, the sixth operational amplifier U6 output signal through the third field effect tube Q3 drain, the third field effect tube Q3 source to the ground terminal, so as to limit the opening of the temperature calibration mode when the heating unit is in the fast heating mode.

[0056] Referring to the accompanying drawings Figure 1 , the accompanying drawings Figure 2, the power signal is fed back to the fourth field effect tube Q4 drain and the eleventh inverter U11 input end through the twenty-eighth resistor R28, the eleventh inverter U11 input end obtains high level signal, the eleventh inverter U11 output end outputs low level, the signal at the eleventh inverter U11 output end is fed back to the ground end through the thirtieth resistor R30, the signal at the input end and the output end of the eleventh inverter U11 is fed back to the 5th pin of the tenth digital potentiometer U10 on 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 a clock signal input end, the 3rd pin of the tenth digital potentiometer U10 is a wake-up end, the 5th pin of the tenth digital potentiometer U10 is a signal input end, the 11th pin of the tenth digital potentiometer U10 is a sliding end, and the 12th pin of the tenth digital potentiometer U10 is a signal output end, the auxiliary control unit has two groups, any auxiliary control unit is used for receiving the signal feedback of the second connector P2 and the fourth connector P4 on the main control unit, the other auxiliary control unit is used for receiving the signal feedback of the first connector P1 and the third connector P3 on the main control unit, and IN / 2 is used for receiving the calibration signal feedback of the main control unit, in the initial state of the circuit, the power signal is fed back to the ground end through the twelfth resistor R12, the second field effect tube Q2 source, the second field effect tube Q2 drain and the twenty-fifth resistor R25, the first capacitor C1 has a certain potential, the power signal is fed back to the ground end through the twenty-third resistor R23 and the first diode D1, the signal at the anode end of the first diode D1 is fed back to the same phase end of the fourth operational amplifier U4, and the fourth operational amplifier U4 outputs, when any auxiliary control unit obtains the calibration signal feedback, the signal is synchronously fed back to the first field effect tube Q1 gate and the second field effect tube Q2 gate, the voltage difference between the second field effect tube Q2 gate and the second field effect tube Q2 source is higher than the conduction threshold, the second field effect tube Q2 is cut off, the voltage difference between the first field effect tube Q1 gate and the first field effect tube Q1 source is higher than the conduction threshold, the first field effect tube Q1 is turned on, the signal at the end of the first capacitor C1 is fed back to the ground end through the first field effect tube Q1 drain, the first field effect tube Q1 source and the thirteenth resistor R13, the potential of the first capacitor C1 decreases, the signal at the end of the thirteenth resistor R13 is fed back to the inverse phase end of the fourth operational amplifier U4, the fourth operational amplifier U4 is cut off, and the signal at the output end of the fourth operational amplifier U4 is fed back to the ground end through the twenty-sixth resistor R26, when the potential at the end of the first capacitor C1 is lower than the potential at the same phase end of the fourth operational amplifier U4, the fourth operational amplifier U4 outputs again, the signal at the output end of the fourth operational amplifier U4 is synchronously fed back to the 3rd pin of the tenth digital potentiometer U10 through the fifth diode D5, the power signal is fed back to the ground end through the twenty-seventh resistor R27 and the tenth digital potentiometer U10, when the auxiliary control unit obtains the calibration signal feedback and the 5th pin of the tenth digital potentiometer U10 on the auxiliary control unit obtains the signal feedback at the end of the third connector P3 on the main control unit, the fourth operational amplifier U4 is cut off, the tenth digital potentiometer U10 adjusts the resistance value of itself to make the signal amplitude at the 12th pin of the tenth digital potentiometer U10 increase,When the fourth operational amplifier U4 outputs again, the tenth digital potentiometer U10 stops adjusting its resistance value. When the auxiliary control unit obtains the calibration signal feedback and the 5th pin of the tenth digital potentiometer U10 on the auxiliary control unit obtains the signal feedback from the end of the fourth connector P4 on the main control unit, the fourth operational amplifier U4 is cut off, the tenth digital potentiometer U10 adjusts its resistance value to make the signal amplitude at the 12th pin of the tenth digital potentiometer U10 decrease, when the fourth operational amplifier U4 outputs again, the tenth digital potentiometer U10 stops adjusting its resistance value. When any auxiliary control unit obtains the calibration signal, the signal is synchronously fed back to the gate of the fifth field effect tube Q5. The voltage difference between the gate and the source of the fifth field effect tube Q5 is higher than the conduction threshold value, the fifth field effect tube Q5 is turned on, the signal at the 12th pin of the tenth digital potentiometer U10 is fed back to the heating unit through the drain of the fifth field effect tube Q5, the source of the fifth field effect tube Q5 and the sixth connector P6. The signal amplitude at the 12th pin of the tenth digital potentiometer U10 is the heating signal required by the heating unit in the temperature calibration mode. The higher the signal amplitude is, the greater the heating current output by the heating unit is. The adjustment amount of the first capacitor C1 is controlled by adjusting the capacitance value of the first capacitor C1. The smaller the capacitance value of the first capacitor C1 is, the smaller the adjustment amount is. Therefore, when any auxiliary control unit obtains the calibration signal, the heating current output by the heating unit can be adjusted by a controllable adjustment amount.

[0057] Refer to the accompanying drawings Figure 2, the circuit initial state, the fourth connector P4 end signal feedback of auxiliary control unit, its unit on the tenth digital potentiometer U10 12 pin end with a certain signal amplitude, the third connector P3 end signal feedback of auxiliary control unit, its unit on the tenth digital potentiometer U10 12 pin end is ground potential, when the heating unit to the initial heating of the drug makes the actual temperature of the drug higher than the reference release temperature, the ninth operational amplifier U9 cut-off, heating unit enters the temperature calibration mode, at this time the drug temperature begins to decline, when the actual temperature of the drug is lower than the lower limit of the effective release temperature error threshold range, the sixth operational amplifier U6 output and through the second connector P2 to the auxiliary control unit connected with it feedback calibration signal, the tenth digital potentiometer U10 on the auxiliary control unit adjusts its resistance to make the tenth digital potentiometer U10 12 pin end signal amplitude down, while the fifth field effect tube Q5 is turned on, the tenth digital potentiometer U10 12 pin end signal is fed back to the heating unit through the fifth field effect tube Q5, the sixth connector P6, when the heating unit obtains the signal feedback, the heating unit adjusts the heating current based on the signal amplitude, after the adjustment is completed, the heating unit constant current output, at this time the actual temperature of the drug rises, when the actual temperature of the drug is higher than the lower limit of the effective release temperature error threshold range, the sixth operational amplifier U6 cut-off, the first field effect tube Q1 cut-off, the second field effect tube Q2 is turned on, the first capacitor C1 end potential rises to the initial potential, when the actual temperature of the drug is higher than the upper limit of the effective release temperature error threshold range, the fifth operational amplifier U5 output and through the first connector P1 to the auxiliary control unit connected with it feedback calibration signal, the tenth digital potentiometer U10 on the auxiliary control unit adjusts its resistance to make the tenth digital potentiometer U10 12 pin end signal amplitude up, and feedback to the heating unit through the sixth connector P6, the heating unit adjusts the heating current again based on the signal amplitude, after the adjustment is completed, the heating unit constant current output again, so as to repeatedly calibrate the heating current of the drug based on the effective release temperature error threshold range until it is stable in the temperature error threshold range, improve the temperature control precision, prevent the change of use environment from causing the drug to be in the over temperature / low temperature state, affect the treatment effect.

[0058] Referring to the accompanying Figure 1 , the accompanying Figure 2, the 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 of the main control unit synchronously receives the reset signal, when the signal is obtained at the end of the fifth connector P5, the signal is transmitted to the ground end through the seventh diode D7 and the fifteenth resistor R15, the potential at the end of the fifteenth resistor R15 rises, the eighth operational amplifier U8 is cut off, at the same time, the signal feedback at the end of the fifth connector P5 is fed back to the gate of the fourth field effect tube Q4, the twenty-ninth resistor R29 is used for discharging the parasitic capacitance of the gate of the fourth field effect tube Q4, the voltage difference between the gate of the fourth field effect tube Q4 and the source of the fourth field effect tube Q4 is higher than the conduction threshold, the fourth field effect tube Q4 is turned on, the signal at the input end of the eleventh inverter U11 is transmitted to the ground end through the drain of the fourth field effect tube Q4 and the source of the fourth field effect tube Q4, at this time, the signal at the input end of the eleventh inverter U11 is low, the signal at the output end of the eleventh inverter U11 is high, at the same time, the 5-pin level of the tenth digital potentiometer U10 of the two auxiliary control units is replaced, at the same time, the IN / 3 of the two auxiliary control units synchronously receives the signal feedback at the end of the fifth connector P5, the signal is fed back to the 10-pin of the tenth digital potentiometer U10 through the sixth diode D6, the tenth digital potentiometer U10 of the two auxiliary control units adjusts the resistance value of itself to reset the 12-pin end to the initial state.

[0059] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claim.

Claims

1. An electrically controlled drug-loaded hot compress patch control circuit, characterized in that, The control circuit comprises a master control unit and a heating unit, the master control unit is used for feeding back a heating mode signal and establishing a temperature error threshold range of effective release of a drug based on a reference release temperature of a drug active ingredient, and the heating unit is used for heating an electric heating patch in the drug-loaded hot compress patch to heat the drug, and the master control unit comprises 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 and a nineteenth resistor. The non-inverting input terminal of the first operational amplifier is connected with one end of the second resistor and one end of the eighth resistor, the inverting input terminal of the first operational amplifier is connected with one end of the first resistor and one end of the tenth resistor, the output terminal of the first operational amplifier is connected with the other end of the first resistor, the non-inverting input terminal of the second operational amplifier is connected with one end of the third resistor and one end of the ninth resistor, the inverting input terminal of the second operational amplifier is connected with one end of the fourth resistor and one end of the fifth resistor, the output terminal of the second operational amplifier is connected with the other end of the fourth resistor, the non-inverting input terminal of the third operational amplifier is connected with one end of the nineteenth resistor and one end of the thirty-first resistor, the inverting input terminal of the third operational amplifier is connected with one end of the sixth resistor, the output terminal of the third operational amplifier is connected with 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 with 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 with a 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 with a ground terminal.

2. The control circuit for an electrically controlled medicated thermal patch according to claim 1, wherein The master control unit further comprises 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 input terminal of the seventh operational amplifier is connected with an IN / 1 terminal, the inverting input terminal of the seventh operational amplifier is connected with the output terminal of the third operational amplifier, the output terminal of the seventh operational amplifier is connected with the anode of the fourth diode, the non-inverting input terminal of the eighth operational amplifier is connected with 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 input terminal of the eighth operational amplifier is connected with one end of the fifteenth resistor and one end of the seventeenth resistor, the output terminal of the eighth operational amplifier is connected with the anode of the second diode and the inverting input terminal of the ninth operational amplifier, the non-inverting input terminal of the ninth operational amplifier is connected with one end of the twentieth resistor and the anode of the third diode, the other end of the sixteenth resistor, the other end of the seventeenth resistor and the other end of the twentieth resistor are connected with a power supply, and the other end of the fifteenth resistor, the other end of the eighteenth resistor and the cathode of the third diode are connected with a ground terminal.

3. The control circuit for an electrically controlled medicated thermal patch according to claim 1, wherein The master control unit further comprises 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 fifth operational amplifier noninverted terminal, the sixth operational amplifier noninverted terminal and the IN / 1 terminal are connected, the fifth operational amplifier noninverted terminal and the first operational amplifier output terminal are connected, the fifth operational amplifier output terminal, the twenty-second resistor one end and the first connector end are connected, the sixth operational amplifier noninverted terminal and the second operational amplifier output terminal are connected, the sixth operational amplifier output terminal, the thirteenth resistor one end, the second connector end and the third field effect tube drain are connected, the third field effect tube gate and the ninth operational amplifier output terminal are connected, the thirteenth resistor other end, the twenty-second resistor other end, the third field effect tube source and the ground terminal are connected.

4. The control circuit for an electrically controlled medicated thermal patch according to claim 2, wherein The master control unit further comprises an eleventh inverter, a fourth field effect tube, a seventh diode, a twenty-eighth resistor, a thirtieth resistor, a third connector, a fourth connector and a fifth connector. The eleventh inverter input terminal, the fourth field effect tube drain, the twenty-eighth resistor one end and the third connector end are connected, the eleventh inverter output terminal, the thirtieth resistor one end and the fourth connector end are connected, the fourth field effect tube gate, the seventh diode anode and the fifth connector end are connected, the seventh diode cathode and the fifteenth resistor one end are connected, the twenty-eighth resistor other end and the power supply are connected, the fourth field effect tube source, the thirtieth resistor other end and the ground terminal are connected.

5. The control circuit for an electrically controlled medicated thermal patch according to claim 1, wherein The control circuit further comprises an auxiliary control unit, and the auxiliary control unit comprises a fourth operational amplifier, a first field effect tube, a second field effect tube, 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 fourth operational amplifier noninverted terminal, the twenty-third resistor one end and the first diode anode are connected, the fourth operational amplifier noninverted terminal and the first field effect tube source and the thirteenth resistor one end are connected, the fourth operational amplifier output terminal and the twenty-sixth resistor one end are connected, the first field effect tube gate, the second field effect tube gate, the twenty-fourth resistor one end and the IN / 2 terminal are connected, the first field effect tube drain and the second field effect tube drain, the first capacitor one end and the twenty-fifth resistor one end are connected, the second field effect tube source and the twelfth resistor one end are connected, the twelfth resistor other end, the twenty-third resistor other end and the power supply are connected, the first diode cathode, the first capacitor other end, the thirteenth resistor other end, the twenty-fourth resistor other end, the twenty-fifth resistor other end, the twenty-sixth resistor other end and the ground terminal are connected.

6. The control circuit for an electrically controlled medicated thermal patch according to claim 5, wherein The auxiliary control unit further comprises a tenth digital potentiometer, a fifth field effect tube, a fifth diode, a sixth diode, a twenty-seventh resistor and a sixth connector. The third pin of the tenth digital potentiometer is connected with the cathode of the fifth diode and the cathode of the sixth diode, the fourth pin of the tenth digital potentiometer is connected with the power supply and one end of the twenty-seventh resistor, the eleventh pin of the tenth digital potentiometer is connected with the twelfth pin of the tenth digital potentiometer, 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 with the end of the sixth connector, the gate of the fifth field effect transistor is connected with the end of IN / 2, the anode of the fifth diode is connected with one end of the twenty-sixth resistor, the anode of the sixth diode is connected with the end of IN / 3, and the sixth pin of the tenth digital potentiometer is connected with the tenth pin of the tenth digital potentiometer, the fourteenth pin of the tenth digital potentiometer and the ground end.

7. The control circuit for an electrically controlled medicated thermal patch according to claim 3, wherein The master control unit further comprises a twenty-first resistor; One end of the twenty-first resistor is connected with the gate of the third field effect transistor, and the other end of the twenty-first resistor is connected with the ground end.

8. The control circuit for an electrically controlled medicated thermal patch according to claim 4, wherein The master control unit further comprises a twenty-ninth resistor; One end of the twenty-ninth resistor is connected with the gate of the fourth field effect transistor, and the other end of the twenty-ninth resistor is connected with the ground end.

9. A control method of a control circuit of an electrically controlled drug-loaded hot compress patch according to any one of claims 1 to 8, characterized by, The method comprises the following steps: Step 1: In the initial stage of use of the drug hot compress patch, the drug is rapidly heated to a reference release temperature of the effective component of the drug, and the opening of the temperature calibration mode is limited during the rapid heating; Step 2: Automatically establish a temperature error threshold range for the effective release of the drug based on the reference release temperature of the effective component of the drug; Step 3: After rapid heating, enter the temperature calibration mode, and repeatedly calibrate the heating current of the drug in this mode until it is stable within the temperature error threshold range; Step 4: After obtaining the reset signal, reset the master control unit and the auxiliary control unit.

10. An electrically controlled medicated thermal patch according to any one of claims 1-8, wherein the control circuit of the medicated thermal patch is electrically controlled by a remote control device. The drug hot compress patch and the controller are connected, the drug hot compress patch comprises a drug layer, a heating layer and a fixing belt, the heating layer is arranged on the drug layer, and the fixing belt is arranged on the heating layer, the drug type of the drug layer is selected based on user demand, the drug 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 for heating the drug layer, and the fixing belt is used for fixing the drug layer and the 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 layer.

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