Ultrasound and weak electrical stimulation combined treatment system and safety control method

Abstract

The present invention discloses a combined treatment system of ultrasound and weak electric stimulation, including a host, an ultrasonic transducer, a weak electric stimulation electrode, an ultrasonic probe connecting line for electrically connecting the host and the ultrasonic transducer, and an electrode connecting line for electrically connecting the host and the weak electric stimulation electrode. The host includes a main control circuit, a transducer driving module, a first safety monitoring module, an electrode driving module, and a second safety monitoring module. The present invention uses a self-developed safety monitoring module to collect voltage and / or current signals at the input end of the ultrasonic transducer and the weak electric stimulation electrode, and then uses FPGA to determine whether the collected signal value is greater than a preset safety value. If so, a control signal is generated and the self-developed transducer driving module or electrode driving module drives the ultrasonic transducer or the weak electric stimulation electrode to adjust the output power, thereby ensuring the safety of the combined treatment device. The present invention also discloses a safety control method for an ultrasonic weak electric stimulation treatment device.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment safety monitoring and control, and in particular to an ultrasound and weak electric stimulation combined treatment system and a safety control method. Background Art

[0002] Ultrasonic electrical stimulation therapeutic device is a therapeutic device that integrates the functions of ultrasonic therapy and electrical stimulation therapy. It is mostly used to treat pain, muscle spasms, stiffness and other diseases. The ultrasonic transducer in the ultrasonic electrical stimulation therapeutic device has three working states: the normal working state of normal contact with the human body, the abnormal state of incomplete contact with the human body, and the unsafe state of no contact with the human body; the weak electrical stimulation electrode also has the normal working state when it is in normal contact with the human body and the abnormal working state when it is not in normal contact with the human body. When the ultrasonic electrical stimulation therapeutic device is in an abnormal or unsafe working state, there is a safety hazard. Therefore, how to identify the abnormal or unsafe working state of the ultrasonic electrical stimulation therapeutic device and automatically adjust the output power of the ultrasonic transducer or the weak electrical stimulation electrode according to the identification result to ensure the safe use of the therapeutic device has become a technical problem that needs to be solved urgently in the combined therapeutic device. Summary of the invention

[0003] The present invention aims to improve the safety of the use of an ultrasonic and electric stimulation combined therapeutic apparatus and provides an ultrasonic and weak electric stimulation combined therapeutic system and a safety control method.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] Provided is an ultrasound and weak electric stimulation combined treatment system, comprising a host, an ultrasonic transducer, a weak electric stimulation electrode, an ultrasound probe connecting line for electrically connecting the host and the ultrasonic transducer, and an electrode connecting line for electrically connecting the host and the weak electric stimulation electrode. The host comprises a main control circuit, a transducer driving module, a first safety monitoring module, an electrode driving module, and a second safety monitoring module. The monitoring end of the first safety monitoring module is connected to the electrical input end of the ultrasonic transducer, and the monitoring end of the second safety monitoring module is connected to the electrical input end of the weak electric stimulation electrode.

[0006] The first safety monitoring module and the second safety monitoring module are used to send the collected voltage and / or current signals to the main controller in the main control circuit after signal processing, and the main controller determines whether the current voltage and / or current value of the monitoring point is greater than the preset safety value according to the received voltage and / or current signals.

[0007] If so, a control signal is generated and output, the control signal includes a first control signal and / or a second control signal, the first control signal is processed by the transducer driving module to drive the ultrasonic transducer to adjust the output power; the second control signal is processed by the electrode driving module to drive the weak electrical stimulation electrode to adjust the output power;

[0008] If not, the control signal is not generated.

[0009] Preferably, the main controller is a FPGA chip.

[0010] Preferably, the transducer driving module and the electrode driving module include a D / A conversion circuit and a signal amplification and power output circuit. The D / A conversion circuit converts the control signal sent by the main controller into an analog signal after digital-to-analog conversion and sends it to the signal amplification and power output circuit. The control signal is amplified by the signal amplification and power output circuit and then outputs a driving signal to drive the corresponding ultrasonic transducer or the weak electric stimulation electrode to output power according to control requirements to ensure safe use.

[0011] Preferably, the first safety monitoring module includes a signal sampling, filtering and amplifying circuit and an A / D conversion circuit. The signal sampling, filtering and amplifying circuit filters and amplifies the voltage and / or current signals collected at the electrical input end of the ultrasonic transducer and inputs them to the A / D conversion circuit after filtering and amplifying, and then inputs them to the main controller after analog-to-digital conversion by the A / D conversion circuit.

[0012] Preferably, the second safety monitoring module includes a bidirectional optocoupler switch combination circuit, and the bidirectional optocoupler switch combination circuit inputs the voltage and / or current signal collected from the electrical input end of the weak electrical stimulation electrode to the main controller.

[0013] Preferably, the signal amplification and power output circuit in the transducer driving module includes amplifiers U12A, U12B, transistors Q1, Q2, and transformer L2. The in-phase input terminal of the amplifier U12A is grounded, and the inverting input terminal is connected to pin 1 of the D / A conversion chip U11. The output terminal of the amplifier U12A is connected to pin 20 of the D / A conversion chip U11. The output terminal of the amplifier U12A is connected in series with a capacitor C59 and a resistor R23 in sequence and then connected to the inverting input terminal of the amplifier U12B. The in-phase input terminal of the amplifier U12B is grounded, and the output terminal is connected in series with a resistor R24 ​​and then connected to the bases of the transistors Q1 and Q2 respectively. The collectors of the transistors Q1 and Q2 are externally connected to an input voltage. The emitters of the transistors Q1 and Q2 are connected in series with a capacitor C60 and then connected to the first end of the transformer L2 and are simultaneously connected in series with a capacitor C56 and then connected to the inverting input terminal of the amplifier U12B.

[0014] The fourth end of the transformer L2 is grounded, and resistors R21 and R25 are connected in series between the second and third ends; the voltage outputted by the intersection point A of the resistors R21 and R25 after being connected in series with capacitor C58 and resistor R22 in sequence is used as the voltage of the input end of the ultrasonic transducer collected by the first safety monitoring module; the current outputted by the third end of the transformer L2 after being connected in series with resistor R26, capacitor C61 and resistor R28 in sequence is used as the current of the input end of the ultrasonic transducer collected by the first safety monitoring module;

[0015] The second end P2 of the transformer L2 is connected in series with a resistor R19 and a resettable fuse F6 and then connected to the positive pole of the electrical input end of the ultrasonic transducer; the third end P3 of the transformer L2 is connected in series with a resistor R26 and then connected to the negative pole of the electrical input end of the ultrasonic transducer.

[0016] The present invention also provides a safety control method, which uses the host to safely control the operation of the ultrasonic transducer and / or the weak electrical stimulation electrode, and the control method includes:

[0017] Step S1, the first safety monitoring module or the second safety monitoring module in the host respectively collects the voltage and / or current signals of the electrical input terminals of the ultrasonic transducer and the weak electrical stimulation electrode and sends them to the main controller;

[0018] Step S2: the main controller determines whether the current voltage and / or current value of the monitoring point is greater than a preset safety value according to the received voltage and / or current signal.

[0019] If so, a control signal is generated and output, the control signal includes a first control signal and / or a second control signal, the first control signal is processed by the transducer driving module in the host to drive the ultrasonic transducer to adjust the output power, and the second control signal is processed by the electrode driving module in the host to drive the weak electrical stimulation electrode to adjust the output power;

[0020] If not, the control signal is not generated.

[0021] The present invention uses a self-developed safety monitoring module to collect voltage and / or current signals at the input ends of the ultrasonic transducer and the weak electric stimulation electrode, and then uses FPGA to determine whether the collected signal value is greater than a preset safety value. If so, a control signal is generated and the self-developed transducer driving module or electrode driving module drives the ultrasonic transducer or the weak electric stimulation electrode to adjust the output power to ensure the safe use of the combined therapeutic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a connection relationship diagram of a host, an ultrasonic transducer, and a weak electric stimulation electrode in an ultrasound and weak electric stimulation combined treatment system provided by an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the host appearance;

[0025] Figure 3 It is a structural diagram of the D / A conversion circuit in the transducer drive module in the host;

[0026] Figure 4 It is a structural diagram of the signal amplification and power output circuit in the transducer drive module in the host;

[0027] Figure 5 It is a structural diagram of a bidirectional optocoupler switch combination circuit in an electrode drive module in a host;

[0028] Figure 6 is a structural diagram of a voltage signal amplifying circuit in a first safety monitoring module in a host;

[0029] Figure 7 is a structural diagram of a current signal amplifying circuit in a first safety monitoring module in a host;

[0030] Figure 8 is a structural diagram of an A / D conversion circuit in a first safety monitoring module in a host;

[0031] Fig. 9 is a structural diagram of the main controller circuit used in this embodiment;

[0032] Fig.10 This is a pin diagram of the main controller used in this embodiment;

[0033] Fig.11 It is a diagram of implementation steps of a security control method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0036] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The ultrasound and weak electrical stimulation combined treatment system provided by the embodiment of the present invention comprises: Figure 2 The hosts shown and Figure 1 The ultrasonic transducer 1 shown in the figure and the ultrasonic probe connecting line for connecting the host and the ultrasonic transducer 1, the ultrasonic probe connecting line has the function of identifying the continuous use time and the remaining service life of the ultrasonic transducer, and the identification principle is: an identification chip is arranged in the ultrasonic probe connecting line, the identification chip is connected with the ultrasonic transducer and the host, the identification chip times the working time of the ultrasonic transducer, and sends the timing result to the host for display on the display screen of the host, the identification chip is preset with the safe service life of the ultrasonic transducer, the identification chip compares the accumulated transducer use time each time with the safe service life time, if the accumulated transducer use time is greater than the safe service life time, a transducer service life expiration prompt message is generated and sent to the host and displayed on the display screen of the host.

[0039] The ultrasound and weak electrical stimulation combined treatment system also includes Figure 1The weak electric stimulation electrode 2 shown in the figure and the electrode connecting line for connecting the host and the weak electric stimulation electrode, the host includes a main controller 10, a transducer driving module 20, a first safety monitoring module 30, an electrode driving module 40 and a second safety monitoring module 50, the monitoring end of the first safety monitoring module 30 is connected to the electrical input end of the ultrasonic transducer 1, and is used to collect the voltage and / or current signal of the electrical input end of the ultrasonic transducer 1 and send it to the main controller 10 after signal processing; the monitoring end of the second safety monitoring module 50 is connected to the electrical input end of the weak electric stimulation electrode 2, and is used to collect the voltage and / or current signal of the electrical input end of the weak electric stimulation electrode 2 and send it to the main controller 10 after signal processing, the main controller 10 determines whether the current voltage and / or current value of the monitoring point is greater than the preset safety value according to the received voltage and / or current signal,

[0040] If yes, a control signal is generated and output, the control signal includes a first control signal and a second control signal, the first control signal is processed by the transducer driving module 20 to drive the ultrasonic transducer 1 to adjust the output power to ensure the safety of the ultrasonic treatment; the second control signal is processed by the electrode driving module 40 to drive the weak electric stimulation electrode 2 to adjust the output power to ensure the safety of the electric stimulation treatment;

[0041] If not, no control signal is generated.

[0042] In different contact states between the ultrasonic probe of the ultrasonic transducer and the human body, such as normal contact, incomplete contact, and no contact, the voltage / current signal value at the electrical input end of the ultrasonic transducer is different. Therefore, the present application uses the different mapping relationships between the different contact states between the ultrasonic probe and the human body and the voltage / current signal value at the electrical input end of the ultrasonic transducer to determine whether the ultrasonic transducer is currently in a safe use state. When it is determined to be in an unsafe use state of incomplete contact or no contact, the ultrasonic transducer is actively controlled to reduce the output power to ensure safe use.

[0043] The principles for safe use control of the weak electrical stimulation probe are the same as those for the ultrasonic transducer and will not be elaborated here.

[0044] Therefore, the technical core of the ultrasound and weak electric stimulation combined treatment system provided by the present invention to achieve control over the safe use of the ultrasonic transducer and the weak electric stimulation probe lies in: first, how to collect the voltage / current signal as the basis for safety control from the electrical input end of the ultrasonic transducer and the weak electric stimulation electrode; second, how to control the corresponding ultrasonic transducer and the weak electric stimulation electrode according to the collected voltage / current signal to adjust the output power according to the control requirements to ensure safe use.

[0045] The present invention solves the first core technical problem through the following solutions:

[0046] like Figure 1 As shown, a first safety monitoring module 30 for collecting the voltage and / or current signal at the input end of the ultrasonic transducer 1 is added between the main controller 10 and the ultrasonic transducer 1, and a second safety monitoring module 50 for collecting the voltage and / or current signal at the input end of the weak electric stimulation electrode 2 is added between the main controller 10 and the weak electric stimulation electrode 2.

[0047] The first safety monitoring module 30 includes a signal sampling filtering and amplifying circuit 100 and an A / D conversion circuit 200. The signal sampling filtering and amplifying circuit 100 filters and amplifies the voltage and / or current signal collected at the electrical input end of the ultrasonic transducer 1 and inputs it to the A / D conversion circuit 200, and then inputs it to the main controller 10 after analog-to-digital conversion by the A / D conversion circuit 200. The signal sampling filtering circuit in the first safety monitoring module 30 is Figure 4 In the area 400 selected by the middle frame, JC1 is the collected voltage signal, and JC2 is the collected current signal; the amplification circuit in the first safety monitoring module 30 includes: Figure 6 The voltage signal amplifier circuit shown in FIG. Figure 7 The current signal amplifier circuit shown.

[0048] The A / D conversion chip U13 in the A / D conversion circuit 200 is as follows: Figure 8 As shown, the designated pins are Fig.10 The designated pin connections of the FPGA main controller shown are used to realize the electrical connection between the A / D conversion chip and the FPGA main controller.

[0049] The second safety monitoring module 50 includes a bidirectional optocoupler switch combination circuit 300, which inputs the voltage and / or current signal collected from the electrical input end of the weak electrical stimulation electrode 2 to the main controller 10. Please refer to the circuit structure of the bidirectional optocoupler switch combination circuit 300. Figure 5 , Figure 5 DCJ1 and DCJ2 are voltage signals and current signals collected from the electrical input end of the weak electrical stimulation electrode 2.

[0050] The present invention solves the second core technical problem through the following scheme:

[0051] like Figure 1 As shown, a transducer driving module 20 is added between the main controller 10 and the ultrasonic transducer 1 to drive the ultrasonic transducer 1 to adjust the output power according to the control requirements after performing signal processing on the first control signal generated by the main controller 10. An electrode driving module 40 is added between the main controller 10 and the weak electric stimulation electrode 2 to drive the weak electric stimulation electrode 2 to adjust the output power according to the control requirements after performing signal processing on the second control signal generated by the main controller 10.

[0052] The transducer driving module 20 and the electrode driving module 40 include a D / A conversion circuit, a signal amplification and power output circuit. The D / A conversion circuit converts the control signal sent by the main controller 10 into an analog signal and sends it to the signal amplification and power output circuit. The control signal is processed by the signal amplification and power output circuit and then outputs a driving signal to drive the corresponding ultrasonic transducer or weak electric stimulation electrode to output power according to the control requirements to ensure safe use. The D / A conversion circuit in the transducer driving module 20 and the electrode driving module 40 is as follows: Figure 3 As shown, the signal amplification and power output circuit is as follows Figure 4 shown.

[0053] Figure 3 The designated pins of the D / A converter chip U11 in Fig.10 The designated pins of the main controller shown in are connected to realize the electrical connection between the D / A conversion chip U11 and the main controller.

[0054] In the above scheme, as a preferred embodiment, the main controller is an FPGA chip, and the number of FPGA chips is several to meet the connection requirements of the transducer driving module, the electrode driving module, the first safety monitoring module, and the second safety monitoring module to the FPGA chip. The signal connection between several FPGA chips constitutes the main control system of the host.

[0055] The present invention also provides a safety control method, which uses the host to safely control the operation of the ultrasonic transducer and / or the weak electrical stimulation electrode, such as Fig.11 As shown, the safety control method includes:

[0056] Step S1, the first safety monitoring module or the second safety monitoring module in the host collects the voltage and / or current signals of the electrical input terminals of the ultrasonic transducer and the weak electrical stimulation electrode respectively and sends them to the main controller;

[0057] Step S2: The main controller determines whether the current voltage and / or current value of the monitoring point is greater than a preset safety value based on the received voltage and / or current signal.

[0058] If so, a control signal is generated and output, the control signal including a first control signal and / or a second control signal, the first control signal is processed by a transducer driving module in the host to drive the ultrasonic transducer to adjust the output power, and the second control signal is processed by an electrode driving module in the host to drive the weak electric stimulation electrode to adjust the output power;

[0059] If not, no control signal is generated.

[0060] In summary, the present invention uses a self-developed safety monitoring module to collect the voltage and / or current signals at the input ends of the ultrasonic transducer and the weak electric stimulation electrode, and then uses the FPGA to determine whether the collected signal value is greater than a preset safety value. If so, a control signal is generated and the self-developed transducer driving module or electrode driving module drives the ultrasonic transducer or the weak electric stimulation electrode to adjust the output power to ensure the safe use of the combined therapeutic device.

[0061] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. An ultrasound and weak electric stimulation combined treatment system, comprising a host, an ultrasonic transducer, a weak electric stimulation electrode, an ultrasonic probe connecting line for electrically connecting the host and the ultrasonic transducer, and an electrode connecting line for electrically connecting the host and the weak electric stimulation electrode, characterized in that: The host includes a main control circuit, a transducer driving module, a first safety monitoring module, an electrode driving module and a second safety monitoring module, wherein the monitoring end of the first safety monitoring module is connected to the electrical input end of the ultrasonic transducer, and the monitoring end of the second safety monitoring module is connected to the electrical input end of the weak electrical stimulation electrode; The first safety monitoring module and the second safety monitoring module are used to send the collected voltage and / or current signals to the main controller in the main control circuit after signal processing, and the main controller determines whether the current voltage and / or current value of the monitoring point is greater than the preset safety value according to the received voltage and / or current signals. If so, a control signal is generated and output, the control signal includes a first control signal and / or a second control signal, the first control signal is processed by the transducer driving module to drive the ultrasonic transducer to adjust the output power; the second control signal is processed by the electrode driving module to drive the weak electrical stimulation electrode to adjust the output power; If not, the control signal is not generated; The transducer driving module and the electrode driving module include a D / A conversion circuit and a signal amplification and power output circuit. The D / A conversion circuit converts the control signal sent by the main controller into an analog signal and sends it to the signal amplification and power output circuit. The control signal is amplified by the signal amplification and power output circuit and then outputs a driving signal to drive the corresponding ultrasonic transducer or the weak electric stimulation electrode to output power according to the control requirements to ensure safety in use. The signal amplification and power output circuit in the transducer driving module includes amplifiers U12A, U12B, transistors Q1, Q2, and transformer L2. The in-phase input terminal of the amplifier U12A is grounded, and the inverting input terminal is connected to pin 1 of the D / A conversion chip U11. The output terminal of the amplifier U12A is connected to pin 20 of the D / A conversion chip U11. The output terminal of the amplifier U12A is connected in series with a capacitor C59 and a resistor R23 in sequence and then connected to the inverting input terminal of the amplifier U12B. The in-phase input terminal of the amplifier U12B is grounded, and the output terminal is connected in series with a resistor R24 ​​and then connected to the bases of the transistors Q1 and Q2 respectively. The collectors of the transistors Q1 and Q2 are externally connected to an input voltage. The emitters of the transistors Q1 and Q2 are connected in series with a capacitor C60 and then connected to the first end of the transformer L2 and are simultaneously connected in series with a capacitor C56 and then connected to the inverting input terminal of the amplifier U12B. The fourth end of the transformer L2 is grounded, and resistors R21 and R25 are connected in series between the second and third ends; the voltage outputted by the intersection point A of the resistors R21 and R25 after being connected in series with capacitor C58 and resistor R22 in sequence is used as the voltage of the input end of the ultrasonic transducer collected by the first safety monitoring module; the current outputted by the third end of the transformer L2 after being connected in series with resistor R26, capacitor C61 and resistor R28 in sequence is used as the current of the input end of the ultrasonic transducer collected by the first safety monitoring module; The second end P2 of the transformer L2 is connected in series with a resistor R19 and a resettable fuse F6 and then connected to the positive pole of the electrical input end of the ultrasonic transducer; the third end P3 of the transformer L2 is connected in series with a resistor R26 and then connected to the negative pole of the electrical input end of the ultrasonic transducer.

2. The ultrasound and weak electrical stimulation combined treatment system according to claim 1, characterized in that: The main controller is a FPGA chip.

3. The ultrasound and weak electrical stimulation combined treatment system according to claim 1, characterized in that: The first safety monitoring module includes a signal sampling, filtering and amplifying circuit and an A / D conversion circuit. The signal sampling, filtering and amplifying circuit inputs the voltage and / or current signal collected from the electrical input end of the ultrasonic transducer to the A / D conversion circuit after filtering and amplifying, and then inputs the signal to the main controller after analog-to-digital conversion by the A / D conversion circuit.

4. The ultrasound and weak electrical stimulation combined treatment system according to claim 1, characterized in that: The second safety monitoring module includes a bidirectional optocoupler switch combination circuit, and the bidirectional optocoupler switch combination circuit inputs the voltage and / or current signal collected from the electrical input end of the weak electrical stimulation electrode to the main controller.

5. A safety control method, characterized in that: The operation of the ultrasonic transducer and / or the weak electric stimulation electrode is safely controlled by the host of the ultrasound and weak electric stimulation combined treatment system as claimed in any one of claims 1 to 4, and the control method includes: Step S1, the first safety monitoring module or the second safety monitoring module in the host respectively collects the voltage and / or current signals of the electrical input terminals of the ultrasonic transducer and the weak electrical stimulation electrode and sends them to the main controller; Step S2: the main controller determines whether the current voltage and / or current value of the monitoring point is greater than a preset safety value according to the received voltage and / or current signal. If so, a control signal is generated and output, the control signal includes a first control signal and / or a second control signal, the first control signal is processed by the transducer driving module in the host to drive the ultrasonic transducer to adjust the output power, and the second control signal is processed by the electrode driving module in the host to drive the weak electrical stimulation electrode to adjust the output power; If not, the control signal is not generated.

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