Detection control circuit, detection control method, solid-state source circuit and electronic equipment

Abstract

The present application discloses a detection control circuit, a detection control method, a solid-state source circuit and an electronic device, which are applied to the detection control of a solid-state source functional circuit, wherein the solid-state source functional circuit includes a power supply circuit and at least two power amplifier circuits, and the detection control circuit includes: at least two switch control circuits, at least two sampling detection circuits and a main control circuit; each switch control circuit receives a power input signal provided by the power supply circuit, and adjusts it to a power switch signal, and outputs it to each power amplifier circuit; the main control circuit generates a first control signal or a second control signal using a comparison result between each power switch signal and a set threshold value, so as to output the power switch signal to the power amplifier circuit using the first control signal, and stop outputting the power switch signal to the power amplifier circuit using the second control signal. In the above manner, the detection control circuit of the present application can timely shut down the power supply to the faulty power amplifier circuit to avoid affecting the normal operation of other power amplifier circuits.

Description

Technical Field

[0001] The present application relates to the field of solid-state source technology, and in particular to a detection control circuit, a detection control method, a solid-state source circuit and an electronic device. Background Art

[0002] The RF source is also called a solid-state source. It is generally composed of a solid-state signal source, a driver stage, and a power amplifier. Limited by semiconductor devices, the input power of a single power amplifier can only reach hundreds of watts. In high-power applications, several power amplifiers are usually used to achieve a larger output through power synthesis.

[0003] Semiconductor devices are sensitive to overvoltage, overcurrent, and overtemperature. Under load mismatch conditions, it is very easy to cause the power amplifier tube to overload and burn out. After the power amplifier tube burns out, the failure mode is short circuit. The power supply of each power amplifier circuit of the traditional RF source is connected in parallel. If one power amplifier tube burns out, it will cause the power supply to overload, causing the entire system to fail to work. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a detection control circuit, a detection control method, a solid-state source circuit and an electronic device, which can solve the problem in the prior art that when a power amplifier tube of the solid-state source burns out, it will cause an overload of the power supply and cause the entire system to fail to work.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a detection control circuit, which is applied to the detection control of a solid-state source functional circuit, the solid-state source functional circuit includes a detection control circuit and at least two power amplifier circuits, wherein the detection control circuit includes: at least two switch control circuits, each switch control circuit is used to couple between a power supply circuit and a power amplifier circuit, each switch control circuit is used to receive a power input signal provided by the power supply circuit, and adjust the power input signal to a power switch signal to output to each power amplifier circuit; at least two sampling detection circuits, each sampling detection circuit is coupled to a switch control circuit, so as to sample and obtain each power switch signal; a main control circuit is coupled to each switch control circuit and each sampling detection circuit, so as to receive each power switch signal sent by each sampling detection circuit, and generate a first control signal or a second control signal by using a comparison result between each power switch signal and a set threshold; wherein each switch control circuit is used to receive the first control signal or the second control signal, so as to output the power switch signal to the power amplifier circuit under the action of the first control signal, and stop outputting the power switch signal to the power amplifier circuit under the action of the second control signal.

[0006] Wherein, the sampling detection circuit includes a first sampling sub-circuit and a first operational amplifier sub-circuit, the first sampling sub-circuit is coupled to the switch control circuit and the first operational amplifier sub-circuit, and the first operational amplifier sub-circuit is coupled to the main control circuit; wherein, the first sampling sub-circuit is used to sample and obtain the power switch signal, and send the power switch signal to the first operational amplifier sub-circuit, so that the first operational amplifier sub-circuit performs operational amplification on the power switch signal; the main control circuit is also used to receive the operationally amplified power switch signal sent by the first operational amplifier sub-circuit, so as to generate a first control signal or a second control signal based on the comparison result between the operationally amplified power switch signal and the set threshold.

[0007] Among them, the main control circuit includes a control subcircuit and at least two voltage pump subcircuits, each voltage pump subcircuit is coupled to the control subcircuit and a switch control circuit; wherein the control subcircuit is used to receive each power switch signal sent by each sampling detection circuit, and use the comparison result between each power switch signal and the set threshold to generate a first switch signal or a second switch signal; the voltage pump subcircuit receives the first switch signal or the second switch signal sent by the control subcircuit to boost the first switch signal to obtain a first control signal, and boost the second switch signal to obtain a second control signal.

[0008] Among them, the main control circuit also includes at least two filtering and isolating sub-circuits, each filtering and isolating sub-circuit is coupled to a control sub-circuit and a voltage pump sub-circuit; wherein, the control sub-circuit is also used to generate a first switch control signal or a second switch control signal using the comparison result between each power switch signal and a set threshold; the filtering and isolating sub-circuit receives the first switch control signal or the second switch control signal sent by the control sub-circuit to filter and isolate the first switch control signal, and cooperate with the first switch signal to obtain the first control signal, and filters and isolates the second switch control signal, and cooperates with the second switch signal to obtain the second control signal.

[0009] The voltage pump subcircuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first switch tube, a second switch tube, a third switch tube, a first capacitor, a second capacitor, a first rectifier diode and a second rectifier diode; wherein the first end of the first resistor is coupled to the first end of the control subcircuit, the second end of the first resistor is coupled to the first end of the second resistor and the first end of the first switch tube, the second end of the second resistor is coupled to the second end of the first switch tube, the second end of the third switch tube and grounded, the third end of the first switch tube is coupled to the first end of the third resistor, the first end of the second switch tube and the first end of the third switch tube, the second end of the third resistor is coupled to the second end of the second switch tube and is used to couple with the first level providing end, the third end of the second switch tube is coupled to the third end of the third switch tube and the first end of the fourth resistor, the second end of the fourth resistor is coupled to the first end of the second capacitor, the second end of the second capacitor is coupled to the first end of the first rectifier diode and the third end of the second rectifier diode, the third end of the first rectifier diode is coupled to the first end of the first capacitor and the filtering isolation subcircuit, the second end of the first capacitor is coupled to the first end of the second rectifier diode and the first end of the sampling detection circuit, and is used to couple with the power amplifier circuit.

[0010] Among them, the filtering isolation subcircuit includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a fourth capacitor and an optocoupler; wherein the first end of the fifth resistor is coupled to the second end of the control subcircuit, the second end of the fifth resistor is coupled to the first end of the sixth resistor, the first end of the fourth capacitor and the first end of the optocoupler, the second end of the sixth resistor is coupled to the second end of the fourth capacitor, the second end of the optocoupler and grounded, the fourth end of the optocoupler is coupled to the third end of the first rectifier diode and the first end of the first capacitor, the third end of the optocoupler is coupled to the first end of the seventh resistor, the second end of the seventh resistor is coupled to the first end of the eighth resistor and the first end of the switch control circuit, and the second end of the eighth resistor is coupled to the third end of the switch control circuit and the second end of the sampling detection circuit.

[0011] Wherein, the sampling detection circuit includes a second sampling sub-circuit and a second operational amplifier sub-circuit, the second sampling sub-circuit includes a ninth resistor, a seventeenth resistor and an eighteenth resistor, and the second operational amplifier sub-circuit includes a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a proportional amplifier and a differential amplifier; wherein, the first end of the ninth resistor is coupled to the first end of the control sub-circuit and the first end of the fifteenth resistor, the second end of the ninth resistor is coupled to the first end of the sixteenth resistor, the first end of the seventeenth resistor and the voltage pump sub-circuit, and is used to couple the power amplifier circuit, the second end of the fifteenth resistor is coupled to the first end of the fourteenth resistor and the second end of the proportional amplifier, the second end of the sixteenth resistor is coupled to the third end of the proportional amplifier, and the second end of the seventeenth resistor is coupled to the third end of the proportional amplifier. The second end is coupled to the first end of the eighteenth resistor and the third end of the control sub-circuit, the second end of the eighteenth resistor is grounded, the first end of the proportional amplifier is coupled to the second end of the fourteenth resistor and the first end of the twelfth resistor, the fourth end of the proportional amplifier is coupled to the first end of the thirteenth resistor, and is used to couple with the power amplifier circuit, the eighth end of the proportional amplifier is used to couple with the first level providing end, the second end of the twelfth resistor is coupled to the second end of the differential amplifier and the first end of the tenth resistor, the second end of the thirteenth resistor is coupled to the third end of the differential amplifier and the first end of the eleventh resistor, the second end of the eleventh resistor is coupled to the fourth end of the differential amplifier and grounded, the second end of the tenth resistor is coupled to the first end of the differential amplifier and the fourth end of the control sub-circuit, and the eighth end of the differential amplifier is used to couple with the second level providing end.

[0012] Among them, the detection control circuit also includes at least two overcurrent protection sub-circuits, each overcurrent protection sub-circuit is coupled to a switch control circuit, and is used to couple to the power supply circuit to receive the power input signal provided by the power supply circuit and output the power input signal to each switch control circuit.

[0013] The main control circuit is also used to calculate a state feedback signal using each power switch signal, and generate a third control signal based on the state feedback signal to send the third control signal to at least part of the switch control circuit, so that at least part of the switch control circuit stops outputting the power switch signal to the power amplifier circuit.

[0014] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a detection control method, which is applied to the detection control circuit as described in any of the above items, and the detection control method includes: receiving a power input signal provided by an external power supply circuit; adjusting the power input signal to a power switch signal; using the comparison result between each power switch signal and a set threshold to generate a first control signal or a second control signal; in response to the current generation of the first control signal, outputting the power switch signal to the corresponding external power amplifier circuit using the first control signal; in response to the current generation of the second control signal, stopping the output of the power switch signal to the corresponding external power amplifier circuit using the second control signal.

[0015] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a solid-state source circuit, wherein the solid-state source circuit includes a power supply circuit, at least two power amplifier circuits and a detection control circuit, and the detection control circuit is coupled between the power supply circuit and each power amplifier circuit; wherein the detection control circuit is the detection control circuit as described in any of the above items.

[0016] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide an electronic device, wherein the electronic device includes a shell and a signal function circuit connected to the shell; wherein the signal function circuit is a detection control circuit as described in any one of the above items; or, the signal function circuit is a solid-state source circuit as described above.

[0017] The beneficial effects of the present application are as follows: Different from the prior art, each switch control circuit in the detection control circuit provided by the present application is used to couple between a power supply circuit and a power amplifier circuit, so as to receive a power input signal provided by the power supply circuit, and adjust the power input signal to a power switch signal, so as to output it to each power amplifier circuit; the main control circuit receives each power switch signal sent by each sampling detection circuit, so as to generate a first control signal or a second control signal by using a comparison result between each power switch signal and a set threshold; each switch control circuit is used to receive the first control signal or the second control signal, so as to output the power switch signal to the power amplifier circuit under the action of the first control signal, and stop outputting the power switch signal to the power amplifier circuit under the action of the second control signal, so that when it is detected that the current output to the power amplifier circuit is abnormal, the power supply to the abnormal power amplifier circuit can be shut off in time, so as to avoid the faulty power amplifier circuit affecting the normal operation of other power amplifier circuits; and by sampling and detecting the current output to the power amplifier circuit, the heat generated when the circuit is working can be dispersed, thereby simplifying the overall design of the circuit; in addition, by detecting the output voltage of each switch control circuit, it is also possible to monitor in real time whether each switch control circuit is in a normal working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0019] Figure 1 is a schematic structural diagram of an implementation scheme of a solid-state source functional circuit;

[0020] Figure 2 It is a structural schematic diagram of a first implementation mode of the detection control circuit of the present application;

[0021] Figure 3 is a structural schematic diagram of a second implementation mode of the detection control circuit of the present application;

[0022] Figure 4 is a structural schematic diagram of a third embodiment of the detection control circuit of the present application;

[0023] Figure 5 It is a flow chart of an implementation method of the detection control method of the present application;

[0024] Figure 6 It is a schematic diagram of a framework of an implementation method of a solid-state source circuit of the present application;

[0025] Figure 7 It is a schematic diagram of the framework of an implementation scheme of the electronic device of the present application. DETAILED DESCRIPTION

[0026] The inventors have found through long-term research that the existing RF source is generally composed of a main power supply, an auxiliary power supply, a RF signal source, a drive stage, a power amplifier stage, a power synthesis module and a control system.

[0027] Among them, the main power supply provides a voltage of 28-50V to supply the driver stage and the power amplifier stage. The auxiliary power supply provides the RF signal source and the 3.3V, 5V, and 12V operating voltages required by the system. The RF signal source is used to generate milliwatt-level RF signals. Common frequencies are 13.56MHz, 27.12MHz, 40.68MHz, 433MHz, 915MHz, and 2450MHz. The driver stage is used to amplify the output signal of the RF signal source to drive the subsequent power amplifier stage to work using the amplified output signal. The power amplifier stage is used to further amplify the signal of the driver stage to reach tens to hundreds of watts. Usually in high-power systems, several or even more power amplifier stages are required to increase the output power. The power synthesis part is used to synthesize the outputs of multiple power amplifier stages to achieve high-power output.

[0028] The existing main power supply of the RF source is directly connected to each RF module, such as Figure 1 As shown, Figure 1 1 is a schematic diagram of a structure of a solid-state source functional circuit. Figure 1 A radio frequency source composed of four power amplifier circuits is shown, where a main power supply is directly connected to four power amplifier circuits PA1, PA2, PA3, and PA4, a watt-level input signal from a radio frequency driving stage is amplified by the four power amplifier circuits, the outputs of the power amplifier circuits PA1 and PA2 are power synthesized by a power synthesizer circuit 1; the outputs of the power amplifier circuits PA3 and PA4 are power synthesized by a power synthesizer circuit 2; the outputs of the power synthesizer circuit 1 and the power synthesizer circuit 2 are connected to a power synthesizer circuit 3 for further power synthesis, and finally a power output signal four times that of a single power amplifier circuit is obtained in the power synthesizer circuit 3.

[0029] Since the RF circuit generally uses a PCB (Printed Circuit Board) and a power amplifier tube directly welded on a copper or metal composite base plate, and the base plate is used as the power supply ground, the advantage of this is that it reduces ground interference and can achieve excellent heat dissipation performance.

[0030] However, the common grounding of multiple circuit modules also brings some problems. For example, it becomes complicated to monitor the working current of each circuit and to disconnect the faulty module from the main power supply circuit in an abnormal state. Therefore, the existing scheme generally adopts the scheme of directly connecting the positive end of the input power supply to each module. When any power amplifier module is short-circuited, other power amplifier modules will not be powered, causing the entire machine to fail to work.

[0031] In order to avoid the adverse effect of a faulty power amplifier circuit on the normal operation of the entire solid-state source, the present application provides a detection control circuit. The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only some embodiments of the present application and not all embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] The present application is described in detail below with reference to the accompanying drawings and implementation methods.

[0034] See also Figure 2 , Figure 2 1 is a schematic diagram of the structure of the first embodiment of the detection control circuit of the present application. In this embodiment, the first detection control circuit 10 includes: at least two first switch control circuits 11, at least two first sampling detection circuits 12 and a first main control circuit 13.

[0035] Among them, a first detection control circuit 10 provided in the present application is specifically used in the detection control of a solid-state source functional circuit 100, which includes a first power supply circuit 101 and at least two first power amplifier circuits 102, so as to detect the signal output to the first power amplifier circuit 102 and promptly shut down the power supply to the faulty first power amplifier circuit 102, thereby effectively avoiding affecting the normal operation of other first power amplifier circuits 102.

[0036] It is worth noting that a solid-state source usually refers to a source generated using solid-state devices (such as semiconductor materials). This source is widely used in many fields, including microwave solid-state sources and solid-state hard drives. A microwave solid-state source is a device that uses solid-state active devices to generate microwave signals. It uses the characteristics of solid-state devices, such as semiconductor materials, to generate microwave signals. This source has important applications in communications, radar and other fields because it provides a stable and reliable source of microwave signals while having the advantages of small size, light weight and high efficiency. Solid-state hard drives are another form of solid-state source that uses flash memory chips as storage media. Compared with traditional mechanical hard drives, solid-state hard drives have the advantages of faster read and write speeds, lower energy consumption, smaller size and weight.

[0037] Among them, the solid-state source functional circuit 100 can be specifically understood as a hardware circuit for a solid-state source to realize various signal functions, and can also specifically include one or more of any reasonable signal function circuits such as an auxiliary power supply circuit, a radio frequency signal source circuit, a drive circuit, a power synthesis circuit, etc., and this application does not limit this.

[0038] In addition, the term "coupled" herein refers to any direct and indirect connection means. Therefore, if the first circuit is described as being coupled to the second circuit, it means that the first circuit can be directly connected to the second circuit through electrical connection or signal connection methods such as wireless transmission, optical transmission, etc., or can be indirectly connected to the second circuit through other circuits or connection means.

[0039] Specifically, each first switch control circuit 11 is coupled between the first power circuit 101 and a corresponding first power amplifier circuit 102 to play a bridging role. Each first switch control circuit 11 receives power input signals from the first power circuit 101, which are usually DC levels or AC signals, and converts the received power input signals and control signals into power switch signals suitable for the first power amplifier circuit 102 to output to each first power amplifier circuit 102.

[0040] Each first sampling detection circuit 12 is coupled to a first switch control circuit 11 for sampling and acquiring each power switch signal.

[0041] The power switch signal may specifically include a voltage signal and / or a current signal, and each first sampling detection circuit 12 includes at least a current sampling element connected in series between each first switch control circuit 11 and a first power amplifier circuit 102, and / or a voltage sampling element connected in parallel between each first switch control circuit 11 and any reasonable ends of the corresponding first power amplifier circuit 102, and the present application does not limit this.

[0042] The first main control circuit 13 is coupled to each first switch control circuit 11 and each sampling detection circuit to collect information from each first sampling detection circuit 12 and send instructions to each first switch control circuit 11 .

[0043] Specifically, the first main control circuit 13 receives each power switch signal sent by each first sampling detection circuit 12. These signals reflect the state of the power switch signal output by each first switch control circuit 11 and the corresponding working state of each first power amplifier circuit 102, for example, whether each first power amplifier circuit 102 is in a normal working state or a short circuit fault state.

[0044] The first main control circuit 13 specifically compares each power switch signal with a set threshold value to generate two different control signals based on the comparison results: a first control signal or a second control signal.

[0045] It is understandable that when each first power amplifier circuit 102 is in a normal working state, the current of each power switch signal will be within a specific threshold range that meets the power supply requirements of each first power amplifier circuit 102, and when a short circuit fault occurs in the first power amplifier circuit 102, the corresponding power switch signal will exceed the threshold range, so that the set threshold can be obtained by using the threshold range, so that when the power switch signal is not greater than the set threshold, the first main control circuit 13 generates a first control signal accordingly, and when the power switch signal is greater than the set threshold, the second control signal is generated accordingly.

[0046] Furthermore, each first switch control circuit 11 is used to receive the first control signal or the second control signal sent by the first main control circuit 13 respectively, so as to trigger conduction under the action of the first control signal, so as to connect the first power supply circuit 101 with the corresponding first power amplifier circuit 102, so as to output the power switch signal to the first power amplifier circuit 102 normally; and trigger shutdown under the action of the second control signal, so as to disconnect the connection between the first power supply circuit 101 and the corresponding first power amplifier circuit 102, and stop outputting the power switch signal to the first power amplifier circuit 102.

[0047] It can be understood that each first switch control circuit 11 corresponding to each first power amplifier circuit 102 is equivalent to a power supply branch of each first power amplifier circuit 102, so as to be able to maintain the power supply to the first power amplifier circuit 102 in response to the first control signal, and to shut off the power supply to the first power amplifier circuit 102 in response to the second control signal.

[0048] Each first sampling detection circuit 12 continuously monitors the power switch signal output by the corresponding first switch control circuit 11, so as to send the monitored power switch signal to the first main control circuit 13. The first main control circuit 13 compares these signals according to a preset threshold value, that is, a set threshold value. If the power switch signal meets the condition, for example, it is within a certain range, the first main control circuit 13 generates a first control signal; if the power switch signal does not meet the condition, for example, it exceeds the threshold range, the first main control circuit 13 generates a second control signal.

[0049] It can be seen from this that when a short circuit fault occurs in at least part of the first power amplifier circuit 102, the corresponding received power switch signal will exceed the threshold range, that is, be greater than the set threshold, so that at least part of the first switch control circuit 11 connected thereto will receive the second control signal sent by the first main control circuit 13 to stop outputting the power switch signal to the first power amplifier circuit 102, that is, the power supply branch of the first power amplifier circuit 102 that is about to fail will be disconnected from the main power supply circuit, so as to avoid affecting the normal operation of other first power amplifier circuits 102 whose corresponding received power switch signals do not exceed the threshold range.

[0050] For ease of understanding, taking the first power amplifier circuit 102 in the solid-state source functional circuit 100 specifically including power amplifier circuit 1, power amplifier circuit 2, ..., power amplifier circuit n (n is an integer greater than 1) as an example, it can be known that the first switch control circuit 11 correspondingly includes switch control circuit 1, switch control circuit 2, ..., switch control circuit n, and the first sampling detection circuit 12 correspondingly includes sampling detection circuit 1, sampling detection circuit 2, ..., sampling detection circuit n.

[0051] Among them, when a short circuit fault occurs in the power amplifier circuit 1, the power switch signal output by the switch control circuit 1 to the power amplifier circuit 1 will be greater than the set threshold value, so as to be sampled by the sampling detection circuit 1 and output to the first main control circuit 13, so that the first main control circuit 13 sends a second control signal to the switch control circuit 1 accordingly, and sends a first control signal to the switch control circuit 2, ..., and the switch control circuit n, so that the switch control circuit 1 stops outputting the power switch signal to the power amplifier circuit 1, while the switch control circuit 2, ..., and the switch control circuit n normally output the power switch signal to the power amplifier circuit 2, ..., and the power amplifier circuit n respectively; the same applies to the case where a short circuit fault occurs in other first power amplifier circuits 102, which will not be repeated here.

[0052] It is worth noting that the number of the first power amplifier circuit 102, the first switch control circuit 11, and the first sampling detection circuit 12 is equal, and specifically can be any reasonable number such as 2, 3, 4 or 6, and a redundant design can be specifically adopted, that is, compared with the number required for the normal working requirements of the solid-state source, there are 1 or 2 or any reasonable number of first power amplifier circuits 102 and the corresponding first switch control circuits 11 and first sampling detection circuits 12, so that when there are 1 or 2 or any reasonable number of first power amplifier circuits 102 with short circuit faults and the power supply is cut off, the remaining first power amplifier circuits 102 can still maintain normal working requirements, and the present application does not limit this.

[0053] Optionally, the first main control circuit 13 may specifically include a control chip, an MCU (Micro Controller Unit) circuit, a CPU (Central Processing Unit), a single-chip microcomputer, a field programmable gate array, a programmable logic device, a discrete gate or transistor logic device, discrete hardware, and any other reasonable circuit unit with a signal processing function, so as to perform corresponding signal processing by using built-in program settings to control each first switch control circuit 11, and the present application does not limit this.

[0054] The above scheme, by shutting off the power supply to the abnormal first power amplifier circuit 102 when detecting that the current output to the first power amplifier circuit 102 is abnormal, prevents the faulty first power amplifier circuit 102 from affecting the normal operation of other first power amplifier circuits 102, that is, in the case of failure of a single first power amplifier circuit 102, the failed first power amplifier circuit 102 can be independently separated from the main power supply circuit, so as to effectively improve the stability of the system; and by sampling and detecting the current output to the first power amplifier circuit 102, the heat generated when the circuit is running can be dispersed, thereby simplifying the overall design of the circuit, that is, using branch current detection to reduce the design difficulty; in addition, by detecting the output voltage of each first switch control circuit 11, it is also possible to monitor in real time whether each first switch control circuit 11 is in a normal working state.

[0055] See also Figure 3 , Figure 3 2 is a schematic diagram of the structure of the second embodiment of the detection control circuit of the present application. The difference between the detection control circuit in this embodiment and the first embodiment of the detection control circuit provided in the present application is that the second sampling detection circuit 22 in the second detection control circuit 20 further includes a first sampling sub-circuit 221 and a first operational amplifier sub-circuit 222.

[0056] Specifically, the first sampling sub-circuit 221 is coupled to the second switch control circuit 21 and the first operational amplifier sub-circuit 222 , and the first operational amplifier sub-circuit 222 is coupled to the second main control circuit 23 .

[0057] Among them, the first sampling sub-circuit 221 is used to sample and obtain the power switch signal, and send the power switch signal to the first operational amplifier sub-circuit 222, so that the first operational amplifier sub-circuit 222 can amplify the power switch signal into a signal within any reasonable parameter range such as a reasonable amplitude and frequency, so as to facilitate subsequent processing.

[0058] The second main control circuit 23 can also specifically receive the operationally amplified power switch signal sent by the first operational amplifier sub-circuit 222 to compare the operationally amplified power switch signal with a set threshold, and generate a first control signal or a second control signal based on the comparison result between the operationally amplified power switch signal and the set threshold.

[0059] Optionally, the first sampling subcircuit 221 may specifically include a resistor, or a current transformer, or a circuit sampling unit composed of one or more of any reasonable circuit elements such as a resistor and a capacitor, an inductor, etc., which is not limited in the present application.

[0060] Optionally, the first operational amplifier subcircuit 222 may specifically include an operational amplifier, or a circuit sampling unit composed of an operational amplifier and one or more of any reasonable circuit elements such as resistors and capacitors, which is not limited in the present application.

[0061] Optionally, the second switch control circuit 21 may specifically include any reasonable electronic switch such as a switch tube or a relay, so that it can be triggered to turn on in response to the first control signal sent by the second main control circuit 23, and triggered to turn off in response to the second control signal sent by the second main control circuit 23. This application does not limit this.

[0062] For ease of understanding, taking the solid-state source functional circuit 100 as an example, which specifically includes four first power amplifier circuits 102, namely power amplifier circuit PA1, power amplifier circuit PA2, power amplifier circuit PA3, and power amplifier circuit PA4, it can be known that the solid-state source functional circuit 100 can also specifically include a first power supply circuit 101, a power synthesis circuit 103, such as power synthesis circuit 1, power synthesis circuit 2, and power synthesis circuit 3; the second detection control circuit 20 correspondingly includes an electronic switch S1, an electronic switch S2, an electronic switch S3, an electronic switch S4, and a sampling resistor CS1, a sampling resistor CS2, a sampling resistor CS3, a sampling resistor CS4, and an operational amplifier AMP1, an operational amplifier AMP2, an operational amplifier AMP3, and an operational amplifier AMP4.

[0063] The sampling resistor CS1, the sampling resistor CS2, the sampling resistor CS3, and the sampling resistor CS4 respectively sample the current output to the power amplifier circuit PA1, the power amplifier circuit PA2, the power amplifier circuit PA3, and the power amplifier circuit PA4, and respectively amplify the current through the operational amplifier AMP1, the operational amplifier AMP2, the operational amplifier AMP3, and the operational amplifier AMP4, and then respectively send the current to the second main control circuit 23. If the current of any one or more of the channels exceeds the set threshold, the output signals PA1_CTL, PA2_CTL, PA3_CTL, and PA4_CTL of the second main control circuit 23 will respectively control the one or more channels of the electronic switch S1, the electronic switch S2, the electronic switch S3, and the electronic switch S4 that exceed the set threshold to trigger shutdown, so as to disconnect the power supply of one or more of the power amplifier circuits PA1, the power amplifier circuit PA2, the power amplifier circuit PA3, and the power amplifier circuit PA4 that have a fault.

[0064] At the same time, in the second main control circuit 23, the currents obtained by real-time sampling can be added together to obtain the system operating current, which is used to indicate the system operating status.

[0065] See also Figure 4 , Figure 41 is a schematic diagram of the structure of the third embodiment of the detection control circuit of the present application. The difference between the detection control circuit in this embodiment and the first embodiment of the detection control circuit provided in the present application is that the third main control circuit 33 in the third detection control circuit 30 further includes a control subcircuit (not shown) and at least two voltage pump subcircuits 331.

[0066] Specifically, each voltage pump subcircuit 331 is coupled to a control subcircuit and a third switch control circuit 31, and specifically, the control subcircuit is used to receive each power switch signal sent by each third sampling detection circuit 32, and use the comparison result between each power switch signal and the set threshold to generate a first switch signal or a second switch signal.

[0067] Among them, the voltage pump subcircuit 331 is specifically used to receive the first switch signal or the second switch signal sent by the control subcircuit accordingly, so as to increase the voltage of the first switch signal to obtain the first control signal, that is, to increase the voltage of the first switch signal to a suitable level state, so as to drive the third switch control circuit 31 to trigger conduction.

[0068] Similarly, the voltage pump subcircuit 331 is also used to boost the second switch signal to obtain a second control signal, that is, to increase the voltage of the second switch signal to a suitable level state so as to drive the third switch control circuit 31 to trigger shutdown.

[0069] It is worth mentioning that Figure 4 The figure shows only one of the third switch control circuits 31, the third sampling detection circuit 32 and the third main control circuit 33 corresponding to one of the first power amplifier circuits 102. When there are at least two first power amplifier circuits 102, Figure 4 The number of each circuit unit in is also at least two, and the same as Figure 4 The schematic diagrams of the circuit units shown are not shown as a whole for ease of reference. Please note that

[0070] Furthermore, in one embodiment, the third main control circuit 33 further includes at least two filtering and isolating sub-circuits 332 , each filtering and isolating sub-circuit 332 being coupled to the control sub-circuit and a voltage pump sub-circuit 331 .

[0071] The control subcircuit is specifically further used to generate a first switch control signal or a second switch control signal using a comparison result between each power switch signal and a set threshold.

[0072] The filtering isolation subcircuit 332 is used to receive the first switch control signal or the second switch control signal sent by the corresponding control subcircuit to filter out the interference signal in the first switch control signal, and after isolating and protecting the filtered first switch control signal, it is combined with the first switch signal to obtain the first control signal to improve the reliability of the first control signal.

[0073] Similarly, the filtering isolation subcircuit 332 is also used to filter out interference signals in the second switch control signal, and after isolating and protecting the filtered second switch control signal, it is matched with the second switch signal to obtain a second control signal to improve the reliability of the second control signal.

[0074] In one embodiment, the voltage pump subcircuit 331 further includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first switch tube Q1, a second switch tube Q2, a third switch tube Q3, a first capacitor C1, a second capacitor C2, a first rectifier diode D1 and a second rectifier diode D2.

[0075] Wherein, the first end of the first resistor R1 is coupled to the first end of the control subcircuit, the second end of the first resistor R1 is coupled to the first end of the second resistor R2 and the first end of the first switch tube Q1, the second end of the second resistor R2 is coupled to the second end of the first switch tube Q1, the second end of the third switch tube Q3 and grounded, the third end of the first switch tube Q1 is coupled to the first end of the third resistor R3, the first end of the second switch tube Q2, and the first end of the third switch tube Q3, the second end of the third resistor R3 is coupled to the second end of the second switch tube Q2, and is used to couple with the first level providing end, and the second switch The third end of the gate tube Q2 is coupled to the third end of the third switch tube Q3 and the first end of the fourth resistor R4, the second end of the fourth resistor R4 is coupled to the first end of the second capacitor C2, the second end of the second capacitor C2 is coupled to the first end of the first rectifier diode D1 and the third end of the second rectifier diode D2, the third end of the first rectifier diode D1 is coupled to the first end of the first capacitor C1 and the filtering isolation sub-circuit 332, the second end of the first capacitor C1 is coupled to the first end of the second rectifier diode D2 and the first end of the third sampling detection circuit 32, and is used to couple with the first power amplifier circuit 102.

[0076] Optionally, the first switch tube Q1, the second switch tube Q2, the third switch tube Q3, and each "switch tube" below can specifically be one or more combinations of any reasonable switching devices such as MOS tubes, high-frequency transistors, triodes, thyristors, IGBTs, etc., and this application does not limit this.

[0077] And the first end of each switch tube in this article corresponds to the control end, so that when the first end of each switch tube receives a corresponding control signal, it will trigger the second end and the third end to be turned on under the first level state of the control signal, and trigger the second end and the third end to be turned off under the second level state of the control signal.

[0078] In one embodiment, the filtering isolation sub-circuit 332 further includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a fourth capacitor C4 and an optical coupler P1.

[0079] Among them, the first end of the fifth resistor R5 is coupled to the second end of the control subcircuit, the second end of the fifth resistor R5 is coupled to the first end of the sixth resistor R6, the first end of the fourth capacitor C4 and the first end of the optocoupler P1, the second end of the sixth resistor R6 is coupled to the second end of the fourth capacitor C4, the second end of the optocoupler P1 and grounded, the fourth end of the optocoupler P1 is coupled to the third end of the first rectifier diode D1 and the first end of the first capacitor C1, the third end of the optocoupler P1 is coupled to the first end of the seventh resistor R7, the second end of the seventh resistor R7 is coupled to the first end of the eighth resistor R8 and the first end of the third switch control circuit 31, and the second end of the eighth resistor R8 is coupled to the third end of the third switch control circuit 31 and the second end of the third sampling detection circuit 32.

[0080] It is worth mentioning that the photoelectric coupler is also called the photoelectric isolator, or optocoupler P1 for short. The photoelectric coupler uses light as a medium to transmit electrical signals. It has a good isolation effect on the input and output electrical signals, so it is widely used in various circuits. At present, it has become one of the most diverse and widely used optoelectronic devices. The optocoupler P1 generally consists of three parts: light emission, light reception, and signal amplification. The input electrical signal drives the light-emitting rectifier diode to emit light of a certain wavelength, which is received by the photodetector to generate photocurrent, and then output after further amplification. This completes the conversion of electricity-light-electricity, thereby playing the role of input, output, and isolation. Since the input and output of the optocoupler P1 are isolated from each other, and the electrical signal transmission has the characteristics of unidirectionality, it has good electrical insulation and anti-interference capabilities.

[0081] A photocoupler is a semiconductor optoelectronic device that encapsulates a light-emitting device and a photosensitive device in the same housing and transmits electrical signals through the conversion of electricity → light → electricity. Among them, the light-emitting device is generally a light-emitting rectifier diode. There are many types of photosensitive devices, in addition to photorectifier diodes, there are also phototransistors, photoresistors, photothyristors, etc. Photocouplers can be combined into many series of photocouplers by different types of light-emitting devices and photosensitive devices according to different requirements.

[0082] In one embodiment, the third sampling detection circuit 32 includes a second sampling sub-circuit 321 and a second operational amplifier sub-circuit 322. The second sampling sub-circuit 321 includes a ninth resistor R9, a seventeenth resistor R17, and an eighteenth resistor R18. The second operational amplifier sub-circuit 322 includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a proportional amplifier U1, and a differential amplifier U2.

[0083] Among them, the first end of the ninth resistor R9 is coupled to the first end of the control subcircuit and the first end of the fifteenth resistor R15, the second end of the ninth resistor R9 is coupled to the first end of the sixteenth resistor R16, the first end of the seventeenth resistor R17 and the voltage pump subcircuit 331, and is used to couple the first power amplifier circuit 102, the second end of the fifteenth resistor R15 is coupled to the first end of the fourteenth resistor R14 and the second end of the proportional amplifier U1, the second end of the sixteenth resistor R16 is coupled to the third end of the proportional amplifier U1, the second end of the seventeenth resistor R17 is coupled to the first end of the eighteenth resistor R18 and the third end of the control subcircuit, the second end of the eighteenth resistor R18 is grounded, and the first end of the proportional amplifier U1 is coupled to the second end of the fourteenth resistor R14 , the first end of the twelfth resistor R12, the fourth end of the proportional amplifier U1 is coupled to the first end of the thirteenth resistor R13 and is used to couple with the first power amplifier circuit 102, the eighth end of the proportional amplifier U1 is used to couple with the first level providing end, the second end of the twelfth resistor R12 is coupled to the second end of the differential amplifier U2 and the first end of the tenth resistor R10, the second end of the thirteenth resistor R13 is coupled to the third end of the differential amplifier U2 and the first end of the eleventh resistor R11, the second end of the eleventh resistor R11 is coupled to the fourth end of the differential amplifier U2 and grounded, the second end of the tenth resistor R10 is coupled to the first end of the differential amplifier U2 and the fourth end of the control sub-circuit, and the eighth end of the differential amplifier U2 is used to couple with the second level providing end.

[0084] In one embodiment, the third detection control circuit 30 specifically also includes at least two overcurrent protection sub-circuits (not shown in the figure), and each overcurrent protection sub-circuit is coupled to a third switch control circuit 31, and is used to couple to the first power supply circuit 101 to receive the power input signal provided by the first power supply circuit 101, and output the power input signal to each third switch control circuit 31, and when the power input signal exceeds the preset voltage and / or current threshold, it can disconnect the connection between the first power supply circuit 101 and the corresponding third switch control circuit 31 to avoid overcurrent or overvoltage causing loss to the third switch control circuit 31, thereby effectively protecting the third switch control circuit 31 and subsequent circuits.

[0085] Optionally, the overcurrent protection subcircuit may specifically include any reasonable device with overcurrent and overvoltage protection, such as a fuse F1, a fuse or a thermal relay, and the present application does not limit this.

[0086] Optionally, the third switch control circuit 31 may further specifically include any reasonable electronic switch such as a fourth switch tube Q4 or a normally open contact of an intermediate relay, and the present application does not limit this.

[0087] It is understandable that the first power supply circuit 101 is the main power supply, and its output voltage VCC is usually 28-50V. When power regulation is performed, the output voltage is usually adjusted to obtain the required output RF power. The fuse F1 is used to protect the fourth switch tube Q4. The PA1_CTL signal is the first switch control signal or the second switch control signal output by the control subcircuit; the OSC signal is the first switch signal or the second switch signal output by the control subcircuit, and can specifically be a switch signal of tens of KHz (kilohertz).

[0088] Among them, after the OSC signal is amplified by the first switch tube Q1, the second switch tube Q2, and the third switch tube Q3, it is provided to the first rectifier diode D1 and the second rectifier diode D2 through the fourth resistor R4 and the second capacitor C2, and a voltage about 15V higher than the output voltage VCC of the first power supply circuit 101 is obtained on the first capacitor C1, that is, the voltage VCC+15V, which is used to power the proportional amplifier U1 and the fourth switch tube Q4. The PA1_CTL output by the control subcircuit is sent to the input end of the optical coupler P1 through the fifth resistor R5, the sixth resistor R6, and the fourth capacitor C4. The sixth resistor R6 and the fourth capacitor C4 are used to filter out interference signals and improve the reliability of the control signal. The output of the optical coupler P1 is provided to the fourth switch tube Q4 through the seventh resistor R7 and the eighth resistor R8, which is used to turn off the fourth switch tube Q4 in an abnormal state, so that the corresponding first power amplifier circuit 102 is disconnected from the main power supply circuit.

[0089] The working current of the first power amplifier circuit 102 is sampled by the ninth resistor R9 to obtain a small signal voltage signal, and then amplified by the proportional amplifier sub-circuit composed of the fourteenth resistor R14, the fifteenth resistor R15, the sixteenth resistor R16, and the proportional amplifier U1 to obtain a suitable voltage signal. The voltage signal is further passed through the differential amplifier sub-circuit composed of the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, and the differential amplifier U2 to shift the voltage of the working current signal to a power amplifier voltage signal with the ground as the reference, and sent to the control sub-circuit to obtain the real-time sampled current signal of the first power amplifier circuit 102.

[0090] In one embodiment, the third main control circuit 33 is also used to calculate a state feedback signal using each power switch signal, for example, to calculate a total operating current of each first power amplifier circuit 102, to obtain a state feedback signal using the total operating current, and to generate a third control signal based on the state feedback signal, to send the third control signal to at least part of the third switch control circuit 31, so that at least part of the third switch control circuit 31 stops outputting the power switch signal to the first power amplifier circuit 102.

[0091] It is understandable that the number of the first power amplifier circuit 102, the third switch control circuit 31, and the third sampling detection circuit 32 can also be designed in a redundant manner, that is, compared with the number required for the normal operation of the solid-state source, there are 1 or 2 more first power amplifier circuits 102 and corresponding third switch control circuits 31 and third sampling detection circuits 32 in any reasonable number. Therefore, when each first power amplifier circuit 102 can work normally, it is necessary to disconnect the power supply of the redundant first power amplifier circuit 102 to avoid working beyond expectations and causing unnecessary losses.

[0092] Among them, the third main control circuit 33 uses the state feedback signal to determine whether the current first power amplifier circuits 102 are working beyond expectations, so that when they are working beyond expectations, the third control signal is used to shut down any one or more of the third switch control circuits 31 corresponding to the first power amplifier circuits 102, or to shut down specific ones or one of the redundantly designed third switch control circuits 31.

[0093] Furthermore, the third main control circuit 33 can also use the third control signal to shut down at least part of the third switch control circuit 31 according to current working requirements and / or actual requirements of load power, which is not limited in the present application.

[0094] This application also specifically adopts a detection control method, see Figure 5 , Figure 5 This is a flow chart of an implementation method of the detection control method of the present application. Specifically, it may include the following steps:

[0095] S41: Receive a power input signal provided by an external power circuit.

[0096] It is understandable that the detection control method in this embodiment is specifically a method for the detection control circuit to detect and control the solid-state source function circuit. The solid-state source function circuit includes a detection control circuit and at least two power amplifier circuits; the detection control circuit includes at least two switch control circuits, at least two sampling detection circuits and a main control circuit, each switch control circuit is used to couple between the power supply circuit and a power amplifier circuit, each sampling detection circuit is coupled to a switch control circuit, and the main control circuit is coupled to each switch control circuit and each sampling detection circuit.

[0097] Specifically, each switch control circuit receives a power input signal from a power circuit. These signals are usually DC levels, but may also be AC ​​signals.

[0098] S42: Adjust the power input signal to a power switch signal.

[0099] Furthermore, each switch control circuit converts the received power input signal and control signal into a power switch signal suitable for use by the power amplifier circuit, and outputs the signal to each power amplifier circuit.

[0100] S43: Generate a first control signal or a second control signal using a comparison result between each power switch signal and a set threshold.

[0101] The main control circuit receives each power switch signal sent by each sampling detection circuit. These signals reflect the state of the power switch signal output by each switch control circuit and the corresponding working state of each power amplifier circuit, such as whether each power amplifier circuit is in a normal working state or a short circuit fault state.

[0102] The main control circuit specifically compares each power switch signal with a set threshold value to generate two different control signals based on the comparison results: a first control signal or a second control signal.

[0103] It is understandable that when each power amplifier circuit is in a normal working state, the current of each power switch signal will be within a specific threshold range that meets the power supply requirements of each power amplifier circuit, and when a short circuit fault occurs in the power amplifier circuit, the corresponding power switch signal will exceed the threshold range, so that the set threshold can be obtained by using the threshold range, so that when the power switch signal is not greater than the set threshold, the main control circuit generates a first control signal accordingly, and when the power switch signal is greater than the set threshold, the main control circuit generates a second control signal accordingly.

[0104] S44: In response to the currently generated first control signal, the power switch signal is output to an external corresponding power amplifier circuit using the first control signal.

[0105] Furthermore, each switch control circuit is used to receive the first control signal sent by the main control circuit respectively, so as to trigger conduction under the action of the first control signal, so as to connect the power supply circuit with the corresponding power amplifier circuit, so as to output the power switch signal to the power amplifier circuit normally.

[0106] S45: In response to the currently generated second control signal, stop outputting the power switch signal to the corresponding external power amplifier circuit using the second control signal.

[0107] Each switch control circuit is used to receive the second control signal sent by the main control circuit respectively, so as to trigger shutdown under the action of the second control signal, so as to disconnect the connection between the power circuit and the corresponding power amplifier circuit, and stop outputting the power switch signal to the power amplifier circuit.

[0108] It is understandable that each switch control circuit corresponding to each power amplifier circuit is equivalent to a power supply branch of each power amplifier circuit, so as to maintain the power supply to the power amplifier circuit in response to the first control signal and shut off the power supply to the power amplifier circuit in response to the second control signal.

[0109] It can be seen from this that when a short circuit fault occurs in at least part of the power amplifier circuit, the corresponding received power switch signal will exceed the threshold range, that is, be greater than the set threshold, so that at least part of the switch control circuit connected thereto will receive the second control signal sent by the main control circuit to stop outputting the power switch signal to the power amplifier circuit, that is, the power supply branch of the faulty power amplifier circuit will be disconnected from the main power supply circuit, so as to avoid affecting the normal operation of other power amplifier circuits whose corresponding received power switch signals do not exceed the threshold range.

[0110] It is worth noting that the number of the power amplifier circuit, the switch control circuit, and the sampling detection circuit is equal, and specifically can be any reasonable number such as 2, 3, 4 or 6, and a redundant design can be specifically adopted, that is, compared with the number required for the normal working requirements of the solid-state source, there are 1 or 2 or any reasonable number more power amplifier circuits and corresponding switch control circuits and sampling detection circuits, so that when there are 1 or 2 or any reasonable number of power amplifier circuits with short circuit faults and the power supply is cut off, the remaining power amplifier circuits can still maintain normal working requirements. This application does not limit this.

[0111] The above scheme, by shutting off the power supply to the abnormal power amplifier circuit when detecting that the current output to the power amplifier circuit is abnormal, prevents the faulty power amplifier circuit from affecting the normal operation of other power amplifier circuits. That is, in the case of failure of a single power amplifier circuit, the failed power amplifier circuit can be independently separated from the main power supply circuit to effectively improve the stability of the system; and by sampling and detecting the current output to the power amplifier circuit, the heat generated when the circuit is running can be dispersed, thereby simplifying the overall design of the circuit, that is, using branch current detection to reduce the design difficulty; in addition, by detecting the output voltage of each switch control circuit, it is also possible to monitor in real time whether each switch control circuit is in a normal working state.

[0112] Furthermore, in one embodiment, after the above S45, it specifically includes: using each power switch signal to calculate a state feedback signal, and generating a third control signal based on the state feedback signal, so as to use the third control signal to stop outputting at least part of the power switch signal to the power amplifier circuit.

[0113] Specifically, the main control circuit is also used to calculate a state feedback signal using each power switch signal, for example, to calculate the total operating current of each power amplifier circuit, to obtain a state feedback signal using the total operating current, and to generate a third control signal based on the state feedback signal, to send the third control signal to at least part of the switch control circuit, so that at least part of the switch control circuit stops outputting the power switch signal to the power amplifier circuit.

[0114] It is understandable that the number of the power amplifier circuit, switch control circuit, and sampling detection circuit can also be designed redundantly, that is, compared with the number required for the normal operation of the solid-state source, there are 1 or 2 more power amplifier circuits and corresponding switch control circuits and sampling detection circuits. Therefore, when each power amplifier circuit can work normally, it is necessary to disconnect the power supply of the redundant power amplifier circuit to avoid working beyond expectations and causing unnecessary losses.

[0115] Among them, the main control circuit uses the state feedback signal to determine whether the current power amplifier circuits are working beyond expectations, so that when they are working beyond expectations, the third control signal is used to shut down any one or more of the switch control circuits corresponding to the power amplifier circuits, or to shut down specific ones or one switch control circuit of the redundant design.

[0116] Furthermore, the main control circuit can also use the third control signal to shut down at least part of the switch control circuit according to current working requirements and / or actual requirements of load power, which is not limited in the present application.

[0117] It is understandable that in some other embodiments, the detection control circuit specifically includes some other more specific circuit units to be able to implement other more specific control methods. For details, please refer to Figure 2-Figure 4 And related text descriptions will not be repeated here.

[0118] This application also specifically adopts a solid-state source circuit, see Figure 6 , Figure 6 1 is a schematic diagram of a solid-state power circuit of the present application. In this embodiment, the solid-state power circuit 50 includes a second power circuit 51, at least two second power amplifier circuits 53, and a fourth detection control circuit 52, wherein the fourth detection control circuit 52 is coupled between the second power circuit 51 and each second power amplifier circuit 53.

[0119] It should be noted that the fourth detection control circuit 52 described in this embodiment is the first detection control circuit 10, the second detection control circuit 20 or the third detection control circuit 30 described in any one of the above embodiments. Figure 2-Figure 4 And the related text content will not be repeated here.

[0120] This application also specifically uses an electronic device, see Figure 7 , Figure 7 Schematic diagram of the framework of an electronic device of the present application. In this embodiment, the electronic device 60 includes a housing 61 and a signal function circuit 62 connected to the housing 61 .

[0121] It should be noted that the signal function circuit 62 described in this embodiment is the first detection control circuit 10, the second detection control circuit 20 or the third detection control circuit 30 described in any one of the above embodiments, and the solid-state source circuit 50. For details, please refer to Figure 2-Figure 6 And the related text content will not be repeated here.

[0122] The beneficial effects of the present application are as follows: Different from the prior art, each switch control circuit in the detection control circuit provided by the present application is used to couple between a power supply circuit and a power amplifier circuit, so as to receive a power input signal provided by the power supply circuit, and adjust the power input signal to a power switch signal, so as to output it to each power amplifier circuit; the main control circuit receives each power switch signal sent by each sampling detection circuit, so as to generate a first control signal or a second control signal by using a comparison result between each power switch signal and a set threshold; each switch control circuit is used to receive the first control signal or the second control signal, so as to output the power switch signal to the power amplifier circuit under the action of the first control signal, and stop outputting the power switch signal to the power amplifier circuit under the action of the second control signal, so that when it is detected that the current output to the power amplifier circuit is abnormal, the power supply to the abnormal power amplifier circuit can be shut off in time, so as to avoid the faulty power amplifier circuit affecting the normal operation of other power amplifier circuits; and by sampling and detecting the current output to the power amplifier circuit, the heat generated when the circuit is working can be dispersed, thereby simplifying the overall design of the circuit; in addition, by detecting the output voltage of each switch control circuit, it is also possible to monitor in real time whether each switch control circuit is in a normal working state.

[0123] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A detection control circuit, applied to the detection control of a solid-state source functional circuit, wherein the solid-state source functional circuit comprises a power supply circuit and at least two power amplifier circuits, characterized in that: The detection control circuit comprises: At least two switch control circuits, each of which is used to couple between the power supply circuit and one of the power amplifier circuits, and each of which is used to receive a power input signal provided by the power supply circuit and adjust the power input signal to a power switch signal to output to each of the power amplifier circuits; At least two sampling detection circuits, each of which is coupled to one of the switch control circuits to sample and obtain each of the power switch signals; A main control circuit, coupled to each of the switch control circuits and each of the sampling detection circuits, to receive each of the power switch signals sent by each of the sampling detection circuits, and to generate a first control signal or a second control signal using a comparison result between each of the power switch signals and a set threshold; Each of the switch control circuits is used to receive the first control signal or the second control signal, so as to output the power switch signal to the power amplifier circuit under the action of the first control signal, and to stop outputting the power switch signal to the power amplifier circuit under the action of the second control signal; The main control circuit includes a control subcircuit and at least two voltage pump subcircuits, each of which is coupled to the control subcircuit and one of the switch control circuits; wherein the control subcircuit is used to receive each of the power switch signals sent by each of the sampling detection circuits, and to generate a first switch signal or a second switch signal using a comparison result between each of the power switch signals and the set threshold; the voltage pump subcircuit receives the first switch signal or the second switch signal sent by the control subcircuit, so as to boost the first switch signal to obtain the first control signal, and to boost the second switch signal to obtain the second control signal; The sampling detection circuit includes a second sampling subcircuit and a second operational amplifier subcircuit, the second sampling subcircuit includes a ninth resistor, a seventeenth resistor and an eighteenth resistor, the second operational amplifier subcircuit includes a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor proportional amplifier and a differential amplifier; wherein the first end of the ninth resistor is coupled to the first end of the control subcircuit and the first end of the fifteenth resistor, the second end of the ninth resistor is coupled to the first end of the sixteenth resistor, the first end of the seventeenth resistor and the voltage pump subcircuit, and is used to couple the power amplifier circuit, the second end of the fifteenth resistor is coupled to the first end of the fourteenth resistor and the second end of the proportional amplifier, the second end of the sixteenth resistor is coupled to the third end of the proportional amplifier, and the second end of the seventeenth resistor is coupled to the The first end of the eighteenth resistor and the third end of the control sub-circuit, the second end of the eighteenth resistor is grounded, the first end of the proportional amplifier is coupled to the second end of the fourteenth resistor and the first end of the twelfth resistor, the fourth end of the proportional amplifier is coupled to the first end of the thirteenth resistor, and is used to couple with the power amplifier circuit, the eighth end of the proportional amplifier is used to couple with the first level providing end, the second end of the twelfth resistor is coupled to the second end of the differential amplifier and the first end of the tenth resistor, the second end of the thirteenth resistor is coupled to the third end of the differential amplifier and the first end of the eleventh resistor, the second end of the eleventh resistor is coupled to the fourth end of the differential amplifier and grounded, the second end of the tenth resistor is coupled to the first end of the differential amplifier and the fourth end of the control sub-circuit, and the eighth end of the differential amplifier is used to couple with the second level providing end.

2. The detection control circuit according to claim 1, characterized in that: The main control circuit further comprises at least two filtering and isolating sub-circuits, each of which is coupled to the control sub-circuit and one of the voltage pump sub-circuits; Wherein, the control subcircuit is further used to generate a first switch control signal or a second switch control signal using a comparison result between each of the power switch signals and the set threshold; The filtering and isolating subcircuit receives the first switch control signal or the second switch control signal sent by the control subcircuit to filter and isolate the first switch control signal, and obtain the first control signal by coordinating it with the first switch signal, and to filter and isolate the second switch control signal, and obtain the second control signal by coordinating it with the second switch signal.

3. The detection control circuit according to claim 2, characterized in that: The voltage pump subcircuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first switch tube, a second switch tube, a third switch tube, a first capacitor, a second capacitor, a first rectifier diode and a second rectifier diode; Among them, the first end of the first resistor is coupled to the first end of the control subcircuit, the second end of the first resistor is coupled to the first end of the second resistor and the first end of the first switch tube, the second end of the second resistor is coupled to the second end of the first switch tube, the second end of the third switch tube and grounded, the third end of the first switch tube is coupled to the first end of the third resistor, the first end of the second switch tube, and the first end of the third switch tube, the second end of the third resistor is coupled to the second end of the second switch tube, and is used to couple with the first level providing end, the third end of the second switch tube is coupled to the third end of the third switch tube and the first end of the fourth resistor, the second end of the fourth resistor is coupled to the first end of the second capacitor, the second end of the second capacitor is coupled to the first end of the first rectifier diode and the third end of the second rectifier diode, the third end of the first rectifier diode is coupled to the first end of the first capacitor and the filtering isolation subcircuit, the second end of the first capacitor is coupled to the first end of the second rectifier diode and the first end of the sampling detection circuit, and is used to couple with the power amplifier circuit.

4. The detection control circuit according to claim 3, characterized in that: The filtering isolation subcircuit includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a fourth capacitor and an optical coupler; Among them, the first end of the fifth resistor is coupled to the second end of the control subcircuit, the second end of the fifth resistor is coupled to the first end of the sixth resistor, the first end of the fourth capacitor and the first end of the optocoupler, the second end of the sixth resistor is coupled to the second end of the fourth capacitor, the second end of the optocoupler and grounded, the fourth end of the optocoupler is coupled to the third end of the first rectifier diode and the first end of the first capacitor, the third end of the optocoupler is coupled to the first end of the seventh resistor, the second end of the seventh resistor is coupled to the first end of the eighth resistor and the first end of the switch control circuit, and the second end of the eighth resistor is coupled to the third end of the switch control circuit and the second end of the sampling detection circuit.

5. The detection control circuit according to any one of claims 1 to 4, characterized in that: The sampling detection circuit includes a second sampling sub-circuit and a second operational amplifier sub-circuit, the second sampling sub-circuit includes a ninth resistor, a seventeenth resistor and an eighteenth resistor, the second operational amplifier sub-circuit includes a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a proportional amplifier and a differential amplifier; Among them, the first end of the ninth resistor is coupled to the first end of the control subcircuit and the first end of the fifteenth resistor, the second end of the ninth resistor is coupled to the first end of the sixteenth resistor, the first end of the seventeenth resistor and the voltage pump subcircuit, and is used to couple the power amplifier circuit, the second end of the fifteenth resistor is coupled to the first end of the fourteenth resistor and the second end of the proportional amplifier, the second end of the sixteenth resistor is coupled to the third end of the proportional amplifier, the second end of the seventeenth resistor is coupled to the first end of the eighteenth resistor and the third end of the control subcircuit, the second end of the eighteenth resistor is grounded, the first end of the proportional amplifier is coupled to the second end of the fourteenth resistor, The first end of the twelfth resistor, the fourth end of the proportional amplifier is coupled to the first end of the thirteenth resistor and is used to couple with the power amplifier circuit, the eighth end of the proportional amplifier is used to couple with the first level providing end, the second end of the twelfth resistor is coupled to the second end of the differential amplifier and the first end of the tenth resistor, the second end of the thirteenth resistor is coupled to the third end of the differential amplifier and the first end of the eleventh resistor, the second end of the eleventh resistor is coupled to the fourth end of the differential amplifier and grounded, the second end of the tenth resistor is coupled to the first end of the differential amplifier and the fourth end of the control subcircuit, and the eighth end of the differential amplifier is used to couple with the second level providing end.

6. The detection control circuit according to any one of claims 1 to 4, characterized in that: The detection control circuit also includes at least two overcurrent protection sub-circuits, each of which is coupled to one of the switch control circuits and is used to couple to the power supply circuit to receive a power input signal provided by the power supply circuit and output the power input signal to each of the switch control circuits.

7. The detection control circuit according to any one of claims 1 to 4, characterized in that: The main control circuit is also used to calculate a state feedback signal using each of the power switch signals, and generate a third control signal based on the state feedback signal, so as to send the third control signal to at least part of the switch control circuits, thereby causing at least part of the switch control circuits to stop outputting the power switch signal to the power amplifier circuit.

8. A detection control method, applied to the detection control circuit as claimed in any one of claims 1 to 7, characterized in that: The detection control method comprises: Receiving a power input signal provided by an external power circuit; Adjusting the power input signal to a power switch signal; Generate a first control signal or a second control signal using a comparison result between each of the power switch signals and a set threshold; In response to currently generating the first control signal, outputting the power switch signal to an external corresponding power amplifier circuit using the first control signal; In response to the second control signal currently being generated, the second control signal is used to stop outputting the power switch signal to the corresponding external power amplifier circuit.

9. A solid-state source circuit, characterized in that: The solid-state source circuit includes a power supply circuit, at least two power amplifier circuits, and a detection control circuit, wherein the detection control circuit is coupled between the power supply circuit and each of the power amplifier circuits; Wherein, the detection control circuit is the detection control circuit as described in any one of claims 1-7.

10. An electronic device, characterized in that: The electronic device comprises a housing and a signal function circuit connected to the housing; Wherein, the signal function circuit is the detection control circuit as described in any one of claims 1 to 7; or, the signal function circuit is the solid-state source circuit as described in claim 9.

Images