Power source control system

Abstract

The application relates to the technical field of power sources, and provides a power source control system, which comprises a signal generator, a signal adjusting circuit, a power transmitter, a power detection circuit and a controller; the signal generator is used for generating a reference signal; the signal adjusting circuit is used for signal amplification and gain adjustment of 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 transmission value of the radio frequency signal during transmission and sending the power transmission 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 transmission value in the case that the power transmission value does not match a target planned power value until the power transmission value detected by the power detection circuit matches the target planned power value. The system can offset deviations caused by device aging, load changes 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;

[0005] 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;

[0006] The signal generator is used to generate a reference signal;

[0007] The signal conditioning circuit is used to amplify and gain adjust the reference signal to obtain a power amplification signal;

[0008] The power transmitter is used to convert the power amplification signal into a radio frequency signal and transmit it;

[0009] 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;

[0010] 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 when the power transmission value and the target power value do not match, until the power transmission value detected by the power detection circuit and the target power value match.

[0011] Optionally, the signal conditioning circuit comprises a first signal amplifier, a gain adjuster and a second signal amplifier;

[0012] 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.

[0013] The first signal amplifier is configured to perform first signal amplification on the reference signal to obtain a reference amplified signal.

[0014] The gain adjuster is configured to perform gain adjustment on the reference amplified signal to obtain a gain adjusted signal.

[0015] The second signal amplifier is configured to perform second signal amplification on the gain adjusted signal to obtain a power amplified signal.

[0016] Optionally, at least one of the first signal amplifier, the gain adjuster, and the second signal amplifier is connected to the controller.

[0017] 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 in a case where the power transmission value does not match a target scheduled power value.

[0018] Optionally, the controller is connected to the signal generator.

[0019] The signal generator is configured to generate a reference signal according to a control signal transmitted by the controller.

[0020] The controller is further configured to adjust the control signal transmitted to the signal generator according to the power transmission value in a case where the power transmission value does not match a target scheduled power value, and transmit the adjusted control signal to the signal generator.

[0021] Optionally, the power transmitter is further configured to receive reflected power.

[0022] 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.

[0023] The controller is further configured to control the radio frequency output according to the power transmission value and the power reflection value.

[0024] 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 in a case where the power ratio value is greater than a preset ratio value, and turn on the radio frequency output in a case where the power ratio value is less than or equal to the preset ratio value.

[0025] Optionally, the controller is further configured to determine a power ratio value according to the power reflection value and the power transmission value, and in a case where the power ratio value is greater than a preset ratio value, turn on spark protection and turn off radio frequency output, and after a preset time interval, turn on the radio frequency output, again determine the power ratio value until the obtained power ratio value is less than or equal to the preset ratio value, and turn off the spark protection.

[0026] Optionally, the power ratio value is determined by the following method:

[0027] Obtaining the power transmission value and the power reflection value in a no-signal state;

[0028] Subtracting the real-time power transmission value during operation from the power transmission value in the no-signal state to obtain a net power transmission value;

[0029] Subtracting the real-time power reflection value during operation from the power reflection value in the no-signal state to obtain a net power reflection value;

[0030] Calculating the ratio of the net power reflection value and the net power transmission value to obtain a power ratio value.

[0031] 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.

[0032] Optionally, the power source control system further comprises:

[0033] 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,

[0034] a communication module connected with the controller, the communication module being configured to interact with an external device.

[0035] By the technical scheme, 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, and the power transmitter is used to transmit the power amplification signal for radio frequency output; the power detection circuit is used to detect a power transmission value of the power amplification signal during transmission, and transmit the power transmission value to the controller; and 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 scheduled power value, until the power transmission value detected by the power detection circuit matches the target scheduled power value. The reference signal is generated by the signal generator, 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 detection 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.

[0036] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain the principles of the application. In the drawings:

[0038] Figure 1 is a block diagram of a power source control system according to an exemplary embodiment.

[0039] Figure 2 is a flowchart of frequency adjustment according to an exemplary embodiment.

[0040] Figure 3 is a flowchart of power adjustment according to an exemplary embodiment.

[0041] Figure 4 is a flowchart of frequency sweep according to an exemplary embodiment.

[0042] Figure 5 is a flowchart of power enable control according to an exemplary embodiment.

[0043] Figure 6 is a flowchart of power source control system operation according to an exemplary embodiment.

[0044] 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

[0045] 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.

[0046] 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.

[0047] 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 will be more obvious, so that the power value of the power source control system is not accurate.

[0048] 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.

[0049] The signal generator 10 is used to generate a reference signal.

[0050] The reference signal can be an initial radio frequency signal, usually a low frequency or intermediate frequency signal.

[0051] In one embodiment, please refer to Figure 2, the signal generator 10 can be a phase-locked loop frequency synthesizer integrated with a voltage-controlled oscillator (VCO) function, and the user can set the frequency parameters through the "frequency setting" option on the main interface, and can adjust the frequency size by the increment and decrement icons on the interface with the set step value, such as "+": frequency increase button, increase by the current step value, and can be long-pressed to continuously increase; "-": frequency decrease button, decrease by the current step value, and can be long-pressed to continuously decrease; in addition, the interface also provides a "repeat frequency setting" option for configuring the repeat frequency parameters of the radio frequency signal, and the adjustment method is similar to "frequency setting", which can be accurately controlled by the step value, and the user can view the current frequency value of the system through the liquid crystal display (LCD).

[0052] The signal conditioning circuit 20 is used for signal amplification and gain adjustment of the reference signal to obtain a power amplification signal.

[0053] The signal conditioning circuit 20 converts the reference signal into a power amplification signal suitable for the power transmitter 30 through amplification and adjustment, and the signal conditioning circuit 20 can also perform operations such as filtering and modulation on the signal.

[0054] The power transmitter 30 is used to convert the power amplification signal into a radio frequency signal and send it out.

[0055] The power transmitter 30 can convert the adjusted power amplification signal into a radio frequency signal and send it out.

[0056] The power detection circuit 40 is used to detect the power transmission value of the radio frequency signal during transmission and send the power transmission value to the controller 50.

[0057] The power detection circuit 40 detects the output power (i.e. power transmission value) of the power transmitter 30 and feeds back the detected power value to the controller 50 for feedback control.

[0058] The controller 50 is used 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 specified power value, until the power transmission value detected by the power detection circuit 40 matches the target specified power value.

[0059] The target specified power value can be a user expected power value set according to user demand.

[0060] If the power transmission value detected by the power detection circuit 40 does not match the target scheduled 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 scheduled power value.

[0061] 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 is consistent with the target scheduled power value, thereby offsetting the deviation caused by device aging, load changes or environmental interference, and ensuring the accurate output of the power source.

[0062] 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.

[0063] The first signal amplifier 21 is configured to perform first signal amplification on the reference signal to obtain a reference amplified signal.

[0064] 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.

[0065] The gain adjuster 22 is configured to perform gain adjustment on the reference amplified signal to obtain a gain adjusted signal.

[0066] 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.

[0067] The second signal amplifier 23 is configured to perform second signal amplification on the gain adjusted signal to obtain a power amplified signal.

[0068] 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.

[0069] The flexibility and accuracy of power control are realized through the combination of hierarchical amplification and intermediate gain adjustment.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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, repeating the above process until the error value is zero or within an allowable error range.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] In a possible implementation, the power transmitter 30 is also used to receive the reflected power;

[0084] 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;

[0085] The controller 50 is also used to control the radio frequency output according to the power transmission value and the power reflection value.

[0086] 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.

[0087] In another embodiment, the controller 50 can further calculate an error between the power reflection value and the maximum allowed reflection power, and if the power reflection value exceeds the maximum allowed reflection power, the controller 50 can adjust parameters of the system (such as the impedance matching network) to reduce the reflected power.

[0088] In a 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.

[0089] The preset ratio value is used to define the maximum allowed proportion of reflected power, which can be set according to actual conditions, and is not limited in the present embodiment.

[0090] 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 reflected 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 reflected power, while ensuring that the system operates within a safe range.

[0091] In a 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.

[0092] The preset time interval can be set according to actual conditions, for example, 33 ms.

[0093] By calculating the power ratio value and enabling the spark protection function, the controller 50 can effectively protect the system from high reflected 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.

[0094] In a possible implementation, the power ratio value is determined as follows:

[0095] The power transmission value and the power reflection value in the no-signal state are obtained;

[0096] The real-time power transmission value during work is subtracted from the power transmission value in the signal-free state to obtain a net power transmission value;

[0097] 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;

[0098] The ratio of the net power reflection value and the net power transmission value is calculated to obtain a power ratio.

[0099] 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 can improve the accuracy and reliability of the system, but also can enhance the adaptability and flexibility of the system.

[0100] 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.

[0101] The current detection module 61 is connected with 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.

[0102] 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.

[0103] The voltage detection module 62 is connected with 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.

[0104] 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.

[0105] The temperature detection module 63 is connected with 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.

[0106] 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.

[0107] In another embodiment, the controller 50 can be configured to compare the detected current value with a preset maximum current value. If the current exceeds the preset value, the controller 50 can take measures (such as reducing the power output or shutting down the radio frequency output) to protect the device. The controller 50 can also be configured to compare the detected voltage value with a preset maximum voltage value. If the voltage exceeds the preset value, the controller 50 can take measures (such as reducing the power output or shutting down the radio frequency output) to protect the device. The controller 50 can also be configured to compare the detected temperature value with a preset maximum temperature value. If the temperature exceeds the preset value, the controller 50 can take measures (such as reducing the power output or shutting down the radio frequency output) to protect the device.

[0108] In one possible implementation, the power source control system can further include:

[0109] a display module 71 connected to the controller 50, the display module 71 being configured 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,

[0110] a communication module 72 connected to the controller 50, the communication module 72 being configured to interact with external devices for information exchange.

[0111] In one embodiment, based on the above-mentioned power source control system, the power source control interval can be 72.5 MHz-15 kW, and the system can have four functions of control, protection, communication, and monitoring.

[0112] Control: with local and remote monitoring functions;

[0113] Protection: complete protection capabilities such as amplitude limiting, over-temperature, over-voltage, over-current, over-stationary wave, high-frequency sparking, etc.;

[0114] Communication: with remote communication function, using MODBUS / TCP communication to realize the reporting and setting functions of the module and the related working parameters and working / fault states of the whole machine;

[0115] Monitoring: real-time monitoring of the working voltage, working current, and temperature of the power amplifier module, as well as the output power, reflected power, port standing wave, phase difference, fault recovery, and other parameters of the whole machine, and local display of the related working states.

[0116] The signal generator in the power source control system can be a PLL frequency generator integrated with VCO function, which amplifies the reference signal and outputs according to certain time and power size through signal amplification and gain adjustment. The controller can be a microcontroller unit (MCU) which detects the current, voltage, temperature and standing wave ratio of the whole system, controls the output power gain size adjustment, frequency adjustment, radio frequency switch and mode selection, and can view the parameters of the system through the LCD display screen or control the system through the remote control port.

[0117] In another embodiment, the power setting parameters can also be determined by sweep mode. Please refer to Figure 4 Click the parameters corresponding to "start frequency", "cut-off frequency" and "step" to set, and click the "sweep" button to start automatic sweep. Start from the starting frequency, sweep the frequency with certain step size, and sweep to the termination frequency. During the scanning process, the standing wave ratio is recorded. After the scanning is completed or the sweep is manually stopped, the power source sets the frequency parameters corresponding to the minimum standing wave ratio and works. During the sweep process, the main interface parameters are synchronized with the sweep interface parameters. The starting and cut-off frequencies are adjustable (71MHz-74MHz), the scanning step size is adjustable (≤500Hz), and the sweep single-point time is ≤50ms.

[0118] In another embodiment, please refer to Figure 5 The user can control the power output by turning on or off the radio frequency enable button on the control system panel. When pressed, the transmitter works and the transmission power is output. 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, 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 is abnormal, the power enable function is turned off to protect the system. When the fault is eliminated, the user can turn on the system again.

[0119] In one embodiment, please refer to Figure 6 After starting, the system will first perform a series of preparation work such as system clock initialization, driver layer initialization and recovery settings. Then it enters the main process, continuously controls the power supply and refresh switch, converts and monitors the key parameters such as output power, reflected power and back pressure, and refreshes the output power adjustment and updates 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.

[0120] If the fast sparking protection requirement is detected, the system will immediately enter the sparking protection state, turn off the radio frequency output in the key time, record the number of sparks per second, and manually switch back after the protection ends. If there is no protection required, it will directly exit the sparking protection process. The whole process is executed in a loop to ensure that the system runs stably and efficiently, while taking into account real-time monitoring and rapid response capabilities.

[0121] The sparking protection function is mainly realized through the reflection power monitoring and dynamic threshold triggering mechanism. The specific process is as follows: the system first acquires the values of forward and reflected power obtained by the analog-to-digital converter (ADC) as static reference in the no signal state, and the effective signal is obtained by subtracting the static value from the real-time ADC value, and the forward power and reflected power are calculated through quadratic polynomial fitting. The system continuously monitors the ratio of reflected power to forward power, and when the ratio exceeds the set threshold, the radio frequency output is immediately turned off, triggering the protection state and lighting the alarm lamp. In the protection state, the timer will turn on the radio frequency for a short time every 33 ms for detection, and if the reflection ratio returns to normal, the protection state will be exited, otherwise it will be maintained off, thereby realizing the sparking protection mechanism of fast response and automatic recovery. The whole process is completed through the cooperation of ADC sampling, dynamic calculation, threshold comparison and hardware control, ensuring the safety of the system.

[0122] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the specific details in the above embodiments. Within the technical concept range 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.

[0123] 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.

[0124] Furthermore, various different embodiments of the present application can also be combined in any manner, as long as they do not violate the idea of the present application, and they should also be considered as disclosed by the present application.

Claims

1. A power source control system characterized by comprising: The application relates to a signal generator, a signal adjusting circuit, a power transmitter, a power detection circuit and a controller. The signal generator, the signal adjusting circuit and the power transmitter are sequentially connected, 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 for generating a reference signal. The signal adjusting circuit is used for signal amplification and gain adjustment of 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 transmission value of the radio frequency signal during transmission and sending the power transmission value to the controller. The controller is used for adjusting the reference signal generated by the signal generator and / or the signal adjusting circuit according to the power transmission value when the power transmission value does not match a target power value until the power transmission value detected by the power detection circuit matches the target power value. The power transmitter is also used for receiving reflected power. The power detection circuit is also used for detecting a power reflection value of the reflected power received by the power transmitter and sending the power reflection value to the controller. The controller is also used for controlling radio frequency output according to the power transmission value and the power reflection value. The controller is also used for determining a power ratio value according to the power reflection value and the power transmission value, turning on spark protection and closing the radio frequency output when the power ratio value is greater than a preset ratio value, turning on the radio frequency output after a preset time interval, determining the power ratio value again until the obtained power ratio value is less than or equal to the preset ratio value, and closing the spark protection. The controller is also used for determining a power ratio value according to the power reflection value and the power transmission value, closing the radio frequency output when the power ratio value is greater than a preset ratio value, and turning on the radio frequency output when the power ratio value is less than or equal to the preset ratio value. The power ratio value is determined by the following method: obtaining a power transmission value and a power reflection value in a no-signal state; subtracting a real-time power transmission value during work from the power transmission value in the no-signal state to obtain a net power transmission value; subtracting a real-time power reflection value during work from the power reflection value in the no-signal state to obtain a net power reflection value; calculating a ratio of the net power reflection value and the net power transmission value to obtain the power ratio value. The signal adjusting circuit comprises a first signal amplifier, a gain adjuster and a second signal amplifier.

2. The power source control system according to claim 1, characterized by, The first signal amplifier, the gain adjuster and the second signal amplifier are sequentially connected, 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 for performing one-time signal amplification on the reference signal to obtain a reference amplification signal. The gain adjuster is used for performing gain adjustment on the reference amplification signal to obtain a gain adjustment signal. The second signal amplifier is used for performing two-time signal amplification on the gain adjustment signal to obtain a power amplification signal. ​ 3. The power source control system according to claim 2, characterized by, At least one of the first signal amplifier, the gain adjuster, and the second signal amplifier is connected with 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.

4. The power source control system according to claim 1, characterized by, The controller is connected with 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.

5. The power source control system according to claim 1, characterized by, The power source control system further comprises at least one of a current detection module, a voltage detection module, and a temperature detection module.

6. The power source control system according to claim 1, characterized by, 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 scheduled power value; and / or a communication module connected with the controller, the communication module being configured to interact with an external device.

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