Power source control system

Abstract

The invention relates to the technical field of power sources, and provides a power source control system, which comprises a signal generator, a signal conditioning circuit, a power transmitter, a power detection circuit and a controller, the signal generator is used for generating reference signals; the signal conditioning circuit is used for performing signal amplification and gain adjustment on the reference signal to obtain a power amplification signal; the power transmitter is used for converting the power amplification signal into a radio frequency signal and transmitting the radio frequency signal; the power detection circuit is used for detecting a power sending value when the radio frequency signal is sent and sending the power sending value to the controller; and the controller is used for adjusting the reference signal generated by the signal generator and / or the signal adjusting circuit according to the power sending value under the condition that the power sending value is not matched with the target proposed power value until the power sending value detected by the power detection circuit is matched with the target proposed power value. The system can counteract deviation caused by device aging, load change or environmental interference, and ensures accurate output of the power source.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power source, in particular, to a power source control system. BACKGROUND

[0002] The power source control system is the core to ensure the safe and efficient operation of radio frequency and power equipment, but in the related art, the actual transmitted power value of the power source control system is different from the desired power value, especially after the device in the power source control system is aged, the difference is more obvious, so that the power value transmitted by the power source control system is not accurate. SUMMARY

[0003] The purpose of the present application is to provide a power source control system to solve the technical problems in the related art.

[0004] In order to achieve the above purpose, the present application provides a power source control system, comprising: a signal generator, a signal conditioning circuit, a power transmitter, a power detection circuit and a controller; The signal generator, the signal conditioning circuit and the power transmitter are connected in sequence, the power transmitter is connected with the power detection circuit, and the power detection circuit is connected with the controller; The signal generator is used to generate a reference signal; The signal conditioning circuit is used to perform signal amplification and gain adjustment on the reference signal to obtain a power amplification signal; The power transmitter is used to convert the power amplification signal into a radio frequency signal and transmit it; The power detection circuit is used to detect the power transmission value of the radio frequency signal when transmitting, and send the power transmission value to the controller; The controller is used to adjust the reference signal generated by the signal generator and / or the signal conditioning circuit according to the power transmission value in the case that the power transmission value does not match the target power value, until the power transmission value detected by the power detection circuit matches the target power value.

[0005] Optionally, the signal conditioning circuit comprises a first signal amplifier, a gain adjuster and a second signal amplifier; The first signal amplifier, the gain adjuster and the second signal amplifier are connected in sequence, and the first signal amplifier is connected with the signal generator, and the second signal amplifier is connected with the power transmitter; The first signal amplifier is used to perform first signal amplification on the reference signal to obtain a reference amplification signal; The gain adjuster is configured to perform gain adjustment on the reference amplified signal to obtain a gain-adjusted signal. The second signal amplifier is configured to perform secondary signal amplification on the gain-adjusted signal to obtain a power amplified signal.

[0006] Optionally, at least one of the first signal amplifier, the gain adjuster, and the second signal amplifier is connected to the controller. The controller is configured to adjust at least one of the first signal amplifier, the gain adjuster, and the second signal amplifier according to the power transmission value when the power transmission value does not match the target scheduled power value.

[0007] Optionally, the controller is connected to the signal generator. The signal generator is configured to generate a reference signal according to a control signal transmitted by the controller. The controller is further configured to adjust the control signal transmitted to the signal generator according to the power transmission value when the power transmission value does not match the target scheduled power value, and transmit the adjusted control signal to the signal generator.

[0008] Optionally, the power transmitter is further configured to receive reflected power. The power detection circuit is further configured to detect a power reflection value of the reflected power received by the power transmitter, and transmit the power reflection value to the controller. The controller is further configured to control the radio frequency output according to the power transmission value and the power reflection value.

[0009] Optionally, the controller is further configured to determine a power ratio value according to the power reflection value and the power transmission value, turn off the radio frequency output when the power ratio value is greater than a preset ratio value, and turn on the radio frequency output when the power ratio value is less than or equal to the preset ratio value.

[0010] Optionally, the controller is further configured to determine a power ratio value according to the power reflection value and the power transmission value, turn on the spark protection and turn off the radio frequency output when the power ratio value is greater than a preset ratio value, turn on the radio frequency output after a preset time interval, and determine the power ratio value again until the obtained power ratio value is less than or equal to the preset ratio value, and turn off the spark protection.

[0011] Optionally, the power ratio value is determined by the following method: Obtain the power transmission value and the power reflection value in a no-signal state. Subtract the real-time power transmission value in operation from the power transmission value in the no-signal state to obtain a net power transmission value. Subtracting the power reflection value in real time during working from the power reflection value in the signal-free state, a net power reflection value is obtained; Calculating the ratio of the net power reflection value and the net power transmission value, a power ratio value is obtained.

[0012] Optionally, the power source control system further comprises at least one of a current detection module, a voltage detection module, and a temperature detection module.

[0013] Optionally, the power source control system further comprises: a display module connected with the controller, the display module being configured to display at least one of the reference signal, the power amplification signal, the power transmission value, and the target power value; and / or, a communication module connected with the controller, the communication module being configured to interact with an external device.

[0014] According to the above technical solution, the signal generator is configured to generate a reference signal; the signal conditioning circuit is configured to amplify and adjust the gain of the reference signal to obtain a power amplification signal, and transmit the power amplification signal through the power transmitter for radio frequency output; the power detection circuit is configured to detect the power transmission value of the power amplification signal during transmission, and transmit the power transmission value to the controller; and the controller is configured to adjust the reference signal generated by the signal generator and / or the signal conditioning circuit according to the power transmission value in the case that the power transmission value does not match the target power value, until the power transmission value detected by the power detection circuit matches the target power value. The signal generator generates a reference signal, which is amplified by the conditioning circuit and then output by the power transmitter. The power detection circuit monitors the actual output value in real time and feeds back to the controller. When the detected value does not match the target value, the controller dynamically adjusts the reference signal of the signal generator (feedforward compensation) and / or the signal conditioning circuit parameters (feedback compensation), so as to offset the deviation caused by device aging, load change, or environmental interference, and ensure the accurate output of the power source.

[0015] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain the application. In the drawings: Figure 1 FIG. 1 is a block diagram of a power source control system according to an exemplary embodiment.

[0017] Figure 2 FIG. 2 is a flowchart of frequency adjustment according to an exemplary embodiment.

[0018] Figure 3 is a flow chart of power adjustment according to an exemplary embodiment.

[0019] Figure 4 is a flow chart of frequency sweeping according to an exemplary embodiment.

[0020] Figure 5 is a flow chart of power enable control according to an exemplary embodiment.

[0021] Figure 6 is a flow chart of power source control system operation according to an exemplary embodiment.

[0022] 10 - signal generator, 20 - signal conditioning circuit, 21 - first signal amplifier, 22 - gain adjuster, 23 - second signal amplifier, 30 - power transmitter, 40 - power detection circuit, 50 - controller, 61 - current detection module, 62 - voltage detection module, 63 - temperature detection module, 71 - display module, 72 - communication module. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0024] In the following description, the words "first", "second", etc. are used only for the purpose of distinguishing the described objects, and cannot be understood as indicating or implying relative importance, nor indicating or implying an order.

[0025] The power source control system is the core to ensure the safe and efficient operation of radio frequency and power equipment. In high-frequency high-power radio frequency applications, the traditional power source has deficiencies in frequency stability, load adaptability and scalability. The actual transmitted power value of the power source control system is different from the desired power value, especially after the aging of the devices in the power source control system, the difference is more obvious, so that the power value transmitted by the power source control system is not accurate.

[0026] Figure 1 is a block diagram of a power source control system according to an exemplary embodiment. Please refer to Figure 1 , the power source control system can include a signal generator 10, a signal conditioning circuit 20, a power transmitter 30, a power detection circuit 40 and a controller 50, the signal generator 10, the signal conditioning circuit 20 and the power transmitter 30 are connected in sequence, the power transmitter 30 is connected with the power detection circuit 40, and the power detection circuit 40 is connected with the controller 50.

[0027] The signal generator 10 is configured to generate a reference signal.

[0028] The reference signal can be an initial radio frequency signal, usually a low frequency or intermediate frequency signal.

[0029] In one embodiment, referring to Figure 2 The signal generator 10 can be a phase-locked loop frequency synthesizer integrated with a voltage-controlled oscillator (VCO) function. The user can set the frequency parameter through the "frequency setting" option on the main interface and adjust the frequency size by the increment and decrement icons on the interface with the set step value. For example, "+" is the frequency increase button, which increases the current step value and can continuously increase by long pressing; "-" is the frequency decrease button, which decreases the current step value and can continuously decrease by long pressing. In addition, the interface also provides a "repeat frequency setting" option for configuring the repeat frequency parameter of the radio frequency signal. The adjustment method is similar to that of "frequency setting", which can be accurately controlled by the step value. The user can check the current frequency value of the system through the liquid crystal display (LCD).

[0030] The signal conditioning circuit 20 is configured to amplify and adjust the reference signal to obtain a power amplification signal.

[0031] The signal conditioning circuit 20 converts the reference signal into a power amplification signal suitable for the power transmitter 30 through amplification and adjustment. The signal conditioning circuit 20 can also perform operations such as filtering and modulation on the signal.

[0032] The power transmitter 30 is configured to convert the power amplification signal into a radio frequency signal and transmit it.

[0033] The power transmitter 30 can convert the adjusted power amplification signal into a radio frequency signal and transmit it.

[0034] The power detection circuit 40 is configured to detect the power transmission value of the radio frequency signal during transmission and send the power transmission value to the controller 50.

[0035] The power detection circuit 40 detects the output power (i.e., the power transmission value) of the power transmitter 30 and feeds back the detected power value to the controller 50 for feedback control.

[0036] The controller 50 is configured to adjust the reference signal generated by the signal generator 10 and / or the signal conditioning circuit 20 according to the power transmission value when the power transmission value does not match the target nominal power value, until the power transmission value detected by the power detection circuit 40 matches the target nominal power value.

[0037] The target power value can be a user desired power value set according to user demand.

[0038] If the power transmission value detected by the power detection circuit 40 does not match the target power value, the controller 50 adjusts the reference signal of the signal generator 10 or / and the parameters of the signal conditioning circuit 20 until the power transmission value detected by the power detection circuit 40 reaches the target power value.

[0039] The reference signal is generated by the signal generator 10, amplified by the conditioning circuit and output by the power transmitter 30. The power detection circuit 40 monitors the actual output value in real time and feeds back to the controller 50. When the detected value does not match the target value, the controller 50 dynamically adjusts the reference signal of the signal generator 10 (feedforward compensation) and / or the parameters of the signal conditioning circuit 20 (feedback compensation). Through closed-loop control, it ensures that the output power of the power transmitter 30 matches the target power value, thereby offsetting the deviation caused by device aging, load changes or environmental interference, and ensuring the accurate output of the power source.

[0040] In a possible implementation, the signal conditioning circuit 20 can include a first signal amplifier 21, a gain adjuster 22 and a second signal amplifier 23, which are connected in sequence, and the first signal amplifier 21 is connected with the signal generator 10, and the second signal amplifier 23 is connected with the power transmitter 30.

[0041] The first signal amplifier 21 is configured to perform first signal amplification on the reference signal to obtain a reference amplified signal.

[0042] The first signal amplifier 21 can amplify the weak reference signal (such as mV level) to a medium power level (such as 1-10W) to establish a stable signal reference.

[0043] The gain adjuster 22 is configured to perform gain adjustment on the reference amplified signal to obtain a gain adjusted signal.

[0044] The gain adjuster 22 adjusts the signal amplitude through voltage / digital control (such as VGA or digital attenuator) to provide an accurate signal for the subsequent power stage.

[0045] The second signal amplifier 23 is configured to perform second signal amplification on the gain adjusted signal to obtain a power amplified signal.

[0046] The second signal amplifier 23 can amplify the gain adjusted signal to a final high power (such as hundreds of watts) to obtain the power amplified signal. For example, the second signal amplifier 23 can adopt a Class AB / D / E radio frequency power amplifier.

[0047] The flexibility and precision of power control are realized by the combination of step amplification and intermediate gain adjustment.

[0048] In one possible implementation, at least one of the first signal amplifier 21, the gain adjuster 22, and the second signal amplifier 23 is connected with the controller 50.

[0049] One or two of the first signal amplifier 21, the gain adjuster 22, and the second signal amplifier 23 can be connected with the controller 50, or all of the first signal amplifier 21, the gain adjuster 22, and the second signal amplifier 23 can be connected with the controller 50.

[0050] The controller 50 is configured to adjust the parameters of the devices connected with the controller 50, i.e., at least one of the first signal amplifier 21, the gain adjuster 22, and the second signal amplifier 23, according to the power transmission value when the power transmission value does not match the target nominal power value.

[0051] The controller 50 can adjust the amplification of the first signal amplifier 21, the controller 50 can also adjust the gain setting (attenuation / gain value) of the gain adjuster 22, and the controller 50 can further adjust the amplification of the second signal amplifier 23.

[0052] Adjusting the parameters of the devices connected with the controller 50 according to the power transmission value can be understood as calculating an error value of the power transmission value and the target nominal power value, adjusting the parameters of the devices connected with the controller 50 according to the error value, and then detecting the radio frequency signal again by the power detection circuit 40, comparing the power transmission value and the target nominal power value again by the controller 50, and repeating the above process until the error value is zero or within an allowable error range.

[0053] In one embodiment, the first signal amplifier 21, the gain adjuster 22, and the second signal amplifier 23 are all connected with the controller 50, and the controller 50 can adjust the parameters of the signal conditioning circuit 20 so that the power amplification signal output by the signal conditioning circuit 20 is changed, thereby affecting the radio frequency signal.

[0054] Please refer to Figure 3 The power size can be adjusted through the set power on the system panel, and the output power is continuously adjustable from 0 to 15kw, and the power size can be adjusted by the increase and decrease buttons on the interface with a set step value, such as "+": set power increase button, increase by the current step value, and long press for continuous increase; "-": set power decrease button, decrease by the current step value, and long press for continuous decrease; the system displays the output power data adjusted by the user in real time through the LCD.

[0055] In another embodiment, the controller 50 can dynamically configure the bias point of the first signal amplifier 21 according to the signal characteristics (such as frequency, amplitude) of the reference signal, ensuring that the signal is in the optimal linear region. The gain adjuster 22 quickly compensates for fluctuations in the front stage, while the controller 50 can also monitor the temperature / current of the second signal amplifier 23 to prevent saturation.

[0056] In a possible implementation, the controller 50 is connected to the signal generator 10, and the signal generator 10 is used to generate the reference signal according to the control signal transmitted by the controller 50.

[0057] The controller 50 is also used to adjust the control signal sent to the signal generator 10 according to the power transmission value in the case where the power transmission value does not match the target power value, and send the adjusted control signal to the signal generator 10.

[0058] Adjusting the control signal sent to the signal generator 10 according to the power transmission value and sending the adjusted control signal to the signal generator 10 can be understood as calculating the error value between the power transmission value and the target power signal, adjusting the parameters (amplitude, frequency, etc.) of the signal generator 10 according to the error value, and after adjustment, the power detection circuit 40 detects the radio frequency signal again, the controller 50 compares the power transmission value with the target power value again, and the above process is repeated until the error value is zero or within the allowed error range.

[0059] The controller 50 can directly control the power from the source of the signal by dynamically adjusting the reference signal of the signal generator 10, which not only improves the accuracy and flexibility of the system, but also enhances the stability and adaptability of the system. Through the closed-loop control mechanism, the system can dynamically adjust the characteristics of the reference signal according to real-time feedback to ensure that the final output power reaches the target power value.

[0060] In a radio frequency system, the radio frequency signal emitted by the power transmitter 30 may encounter an imperfectly matched load (such as an antenna or a transmission line), which may cause part of the radio frequency energy to be reflected back to the power transmitter 30. The reflected power not only reduces the efficiency of the system, but also may cause damage to the power transmitter 30, therefore, it is necessary to monitor and control the power value of the reflected power to ensure the safe operation of the system.

[0061] In a possible implementation, the power transmitter 30 is also used to receive the reflected power; The power detection circuit 40 is also used to detect the power reflection value of the reflected power received by the power transmitter 30, and send the power reflection value to the controller 50; The controller 50 is also used to control the radio frequency output according to the power transmission value and the power reflection value.

[0062] In another embodiment, the controller 50 is further configured to compare the power reflection value with a maximum allowed reflection power, and to turn off the power enable in case the power reflection value is greater than the maximum allowed reflection power, so that the radio frequency output is turned off.

[0063] In another embodiment, the controller 50 is further configured to calculate an error between the power reflection value and the maximum allowed reflection power, and to adjust parameters of the system (such as the impedance matching network) to reduce the reflection power if the power reflection value exceeds the maximum allowed reflection power.

[0064] In one possible implementation, the controller 50 is further configured to determine a power ratio value according to the power reflection value and the power transmission value, and to turn off the radio frequency output in case the power ratio value is greater than a preset ratio value, and to turn on the radio frequency output in case the power ratio value is less than or equal to the preset ratio value.

[0065] The preset ratio value is used to define a maximum allowed proportion of the reflection power, and can be set according to actual conditions, which is not limited in the present embodiment.

[0066] Turning off the radio frequency output in case the power ratio value is greater than the preset ratio value can protect the system from high reflection power, and turning on the radio frequency output in case the power ratio value is less than or equal to the preset ratio value ensures normal operation of the system. By calculating the power ratio value and controlling the radio frequency output according to the ratio value, the controller 50 can effectively protect the system from high reflection power, while ensuring that the system operates within a safe range.

[0067] In one possible implementation, the controller 50 is further configured to determine a power ratio value according to the power reflection value and the power transmission value, to turn on the spark protection and turn off the radio frequency output in case the power ratio value is greater than a preset ratio value, and to turn on the radio frequency output after a preset time interval, and to determine the power ratio value again until the obtained power ratio value is less than or equal to the preset ratio value, and to turn off the spark protection.

[0068] The preset time interval can be set according to actual conditions, for example, 33 ms.

[0069] By calculating the power ratio value and enabling the spark protection function, the controller 50 can effectively protect the system from high reflection power, not only improving the safety of the system, but also ensuring that the system gradually recovers normal radio frequency output within a safe range through the preset time interval and repeated detection mechanism.

[0070] In one possible implementation, the power ratio value is determined as follows: The power transmission value and the power reflection value in the no-signal state are obtained; The real-time power transmission value during operation is subtracted from the power transmission value in the no-signal state to obtain a net power transmission value; The real-time power reflection value during work is subtracted from the power reflection value in the signal-free state to obtain a net power reflection value; The ratio of the net power reflection value and the net power transmission value is calculated to obtain a power ratio.

[0071] By introducing the reference value in the signal-free state, the controller 50 can more accurately calculate the net power transmission value and the net power reflection value, thereby obtaining a more accurate power ratio, which not only improves the accuracy and reliability of the system, but also enhances the adaptability and flexibility of the system.

[0072] In a possible implementation, the power source control system can further include at least one of a current detection module 61, a voltage detection module 62, and a temperature detection module 63.

[0073] The current detection module 61 is connected to the controller 50, and the current detection module 61 can be used to detect the output current of the power transmitter 30 and send the value of the output current to the controller 50.

[0074] By monitoring the output current, overcurrent phenomenon can be prevented, damage to the power transmitter 30 and the load device can be avoided, and the power output can also be adjusted according to the output current value to ensure that the system operates in the best working state.

[0075] The voltage detection module 62 is connected to the controller 50, and the voltage detection module 62 can be used to detect the output voltage of the power transmitter 30 and send the value of the output voltage to the controller 50.

[0076] By monitoring the output voltage, overvoltage phenomenon can be prevented, damage to the power transmitter 30 and the load device can be avoided, and the power output can also be adjusted according to the output voltage value to ensure that the system operates in the best working state.

[0077] The temperature detection module 63 is connected to the controller 50, and the temperature detection module 63 can be used to detect the working temperature of the power transmitter 30 or other devices and send the working temperature to the controller 50.

[0078] By monitoring the working temperature, overheating of the device can be prevented, damage to the device caused by high temperature can be avoided, and the power output can also be adjusted according to the working temperature to ensure that the system operates within a safe temperature range.

[0079] In another embodiment, the controller 50 can be used to compare the detected current value with a preset maximum current value. If the current exceeds the preset value, the controller 50 will take measures (such as reducing power output or turning off the radio frequency output) to protect the device. The controller 50 can also be used to compare the detected voltage value with a preset maximum voltage value. If the voltage exceeds the preset value, the controller 50 will take measures (such as reducing power output or turning off the radio frequency output) to protect the device. The controller 50 can also be used to compare the detected temperature value with a preset maximum temperature value. If the temperature exceeds the preset value, the controller 50 will take measures (such as reducing power output or turning off the radio frequency output) to protect the device.

[0080] In one possible implementation, the power source control system can further include: a display module 71 connected with the controller 50, the display module 71 being used to display at least one of the reference signal, the power amplification signal, the power transmission value, and the target proposed power value; and / or, a communication module 72 connected with the controller 50, the communication module 72 being used to interact information with external devices.

[0081] In one embodiment, based on the above-mentioned power source control system, the power source control interval can be 72.5MHz-15kW, and can have four functions of control, protection, communication, and monitoring.

[0082] Control: with local and remote monitoring functions; Protection: complete protection capabilities such as amplitude limiting, over-temperature, over-voltage, over-current, over-stationary wave, high-frequency sparking, etc.; Communication: with remote communication function, using MODBUS / TCP communication to realize module, whole machine related working parameters and working, fault state reporting, setting functions; Monitoring: can real-time monitor the working voltage, working current, temperature of the power amplifier module, and the output power, reflected power, port standing wave, phase difference, fault recovery, etc. of the whole machine, and display the related working state locally.

[0083] The signal generator in the power source control system can be a PLL frequency generator integrated with VCO function, which amplifies the reference signal through signal amplification and gain adjustment and outputs according to certain time and power size, the controller can be a microcontroller unit (MCU) which detects the current, voltage, temperature and standing wave ratio, etc. of the whole system, controls the output power gain size adjustment, frequency adjustment, radio frequency switch and mode selection, etc., which can be viewed through the LCD display screen, and the system can also be controlled through the remote control port.

[0084] In another embodiment, the power setting parameter can also be determined in a sweep mode, please refer to Figure 4 , click the parameters corresponding to "start frequency", "cut-off frequency", "step", and click the "sweep" button to start automatic sweep. Starting from the start frequency, the frequency is scanned with a certain step, and the VSWR is recorded during the scanning process. After the scanning is completed or the sweep is manually stopped, the power source sets the parameters at the frequency corresponding to the minimum VSWR and works. During the sweep process, the main interface parameters are synchronized with the sweep interface parameters; wherein the start and end frequencies are adjustable (71MHz-74MHz), the scanning step is adjustable ≤500Hz, and the sweep single-point time is ≤50ms.

[0085] In another embodiment, please refer to Figure 5 , the user can control the power output by controlling the ON or OFF of the radio frequency enable button on the system panel. When pressed, the transmitter works and the transmission power is emitted. Otherwise, there is no power output. The system CPU will always detect the power enable button. If the user turns on the power output, the system detects the on state, and then detects the protection state of the system. If the protection state is normal, the power output of the system is turned on, and the protection state of the system is always detected. If the system detects that the user turns off the power output state or the protection state of the system appears abnormal, the power enable function will be turned off to protect the system. When the fault is eliminated, the user can turn on the system again.

[0086] In one embodiment, please refer to Figure 6 , after the system is started, it will first perform a series of preparation work such as system clock initialization, driver layer initialization and recovery setting. Then enter the main process, the system will continue to control the power supply and refresh switch, convert and monitor the key parameters such as output power, reflected power and back pressure, and refresh the output power adjustment and update the screen display. Then, the system will process the logic of each module, read the power signal, check the function pointer, and execute the host computer instruction. In this process, the system will detect the logic alarm, fault state, and key indicators such as temperature and flow in real time to ensure safe operation. At the same time, the system will update the module register data and execute the sweep function.

[0087] If the fast sparking protection requirement is detected, the system will immediately enter the sparking protection state, turn off the radio frequency output at the key time, record the sparking frequency per second, and manually switch back after the protection is over. If no protection is needed, the sparking protection process is directly exited. The whole process is executed in a loop to ensure that the system runs stably and efficiently, while taking into account the real-time monitoring and rapid response capability.

[0088] The spark protection function is mainly realized through a reflected power monitoring and a dynamic threshold triggering mechanism. The specific process is as follows: the system first collects the values of the forward and reflected powers obtained by an analog-to-digital converter (ADC) in a signal-free state as a static reference. During operation, the real-time ADC value is subtracted from the static value to obtain an effective signal, and the forward and reflected powers are calculated through a quadratic polynomial fitting. The system continuously monitors the ratio of the reflected power to the forward power, and when the ratio exceeds a set threshold, the radio frequency output is immediately turned off, the protection state is triggered, and the alarm light is turned on. In the protection state, the timer will briefly turn on the radio frequency for detection every 33 ms. If the reflection ratio returns to normal, the protection state is exited; otherwise, it is maintained off, thereby realizing a fast response and automatic recovery spark protection mechanism. The entire process is completed through the cooperation of ADC sampling, dynamic calculation, threshold comparison and hardware control, ensuring the safety of the system.

[0089] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details in the above-described embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application.

[0090] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again by the present application.

[0091] Furthermore, any combination of various different embodiments of the present application can also be made, as long as it does not deviate from the idea of the present application, and it should also be considered as disclosed by the present application.

Claims

1. A power source control system, characterized in that: include: Signal generator, signal conditioning circuit, power transmitter, power detection circuit and controller; The signal generator, the signal conditioning circuit, and the power transmitter are connected in sequence, the power transmitter is connected to the power detection circuit, and the power detection circuit is connected to the controller; The signal generator is used to generate a reference signal; The signal conditioning circuit is used to perform signal amplification and gain adjustment on the reference signal to obtain a power amplified signal; The power transmitter is used to convert the power amplified signal into a radio frequency signal and transmit the signal; The power detection circuit is used to detect the power transmission value of the radio frequency signal when it is transmitted, and send the power transmission value to the controller; The controller is configured to adjust the reference signal generated by the signal generator and / or the signal conditioning circuit according to the power transmission value when the power transmission value does not match the target intended power value, until the power transmission value detected by the power detection circuit matches the target intended power value.

2. The power source control system according to claim 1, characterized in that: The signal conditioning circuit includes: a first signal amplifier, a gain regulator and a second signal amplifier; The first signal amplifier, the gain adjuster, and the second signal amplifier are connected in sequence, and the first signal amplifier is connected to the signal generator, and the second signal amplifier is connected to the power transmitter; The first signal amplifier is used to amplify the reference signal to obtain a reference amplified signal; The gain adjuster is used to perform gain adjustment on the reference amplified signal to obtain a gain adjustment signal; The second signal amplifier is used to perform secondary signal amplification on the gain adjustment signal to obtain a power amplified signal.

3. The power source control system according to claim 2, characterized in that: At least one of the first signal amplifier, the gain adjuster, and the second signal amplifier is connected to the controller; The controller is configured to adjust at least one of the first signal amplifier, the gain adjuster, and the second signal amplifier according to the power transmission value when the power transmission value does not match the target planned power value.

4. The power source control system according to claim 1, characterized in that: The controller is connected to the signal generator; The signal generator is used to generate a reference signal according to the control signal transmitted by the controller; The controller is further configured to adjust the control signal sent to the signal generator according to the power transmission value when the power transmission value does not match the target planned power value, and send the adjusted control signal to the signal generator.

5. The power source control system according to claim 1, characterized in that: The power transmitter is further configured to receive reflected power; The power detection circuit is further configured to detect a power reflection value of the reflected power received by the power transmitter, and send the power reflection value to the controller; The controller is further configured to control radio frequency output according to the power transmission value and the power reflection value.

6. The power source control system according to claim 5, characterized in that: The controller is further configured to determine a power ratio based on the power reflection value and the power transmission value, and to turn off the RF output when the power ratio is greater than a preset ratio, and to turn on the RF output when the power ratio is less than or equal to the preset ratio.

7. The power source control system according to claim 5, characterized in that: The controller is further configured to determine a power ratio based on the power reflection value and the power transmission value, and to enable spark protection and disable radio frequency output when the power ratio is greater than a preset ratio, and to enable radio frequency output after a preset time interval, and to determine the power ratio again until the obtained power ratio is less than or equal to the preset ratio, and then disable spark protection.

8. The power source control system according to claim 6 or 7, characterized in that: The power ratio is determined as follows: Obtain the power transmission value and power reflection value in the no-signal state; Subtract the real-time power transmission value during operation from the power transmission value in the no-signal state to obtain the net power transmission value; Subtract the real-time power reflection value during operation from the power reflection value in the no-signal state to obtain the net power reflection value; A ratio of the net power reflection value to the net power transmission value is calculated to obtain a power ratio.

9. The power source control system according to claim 1, characterized in that: The power source control system further includes at least one of a current detection module, a voltage detection module, and a temperature detection module.

10. The power source control system according to claim 1, characterized in that: The power source control system further includes: a display module connected to the controller, configured to display at least one of the reference signal, the power amplification signal, the power transmission value, and the target power value; and / or A communication module is connected to the controller and is used to exchange information with external devices.

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