CN103389665A - Detection control device of high-power digital power amplifier - Google Patents
Detection control device of high-power digital power amplifier Download PDFInfo
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- CN103389665A CN103389665A CN2013103064208A CN201310306420A CN103389665A CN 103389665 A CN103389665 A CN 103389665A CN 2013103064208 A CN2013103064208 A CN 2013103064208A CN 201310306420 A CN201310306420 A CN 201310306420A CN 103389665 A CN103389665 A CN 103389665A
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Abstract
The invention discloses a detection control device of a high-power digital power amplifier. The detection control device comprises a sampling plate and a main control panel; a Hall current sensor, a resistance voltage divider, a voltage follower and a Hall voltage sensor in the sampling plate are used for converting 10 KA voltage and 1 KA current into a 2V voltage signal; an ARM9 processor of the main control panel, as well as a voltage detection unit and a current detection unit which are externally connected with the ARM9 processor, is used for performing voltage distribution on the 2V voltage signal, acquiring an effective value and performing digital/analog conversion, so that 10 KV voltage and 1 KA current are detected; a temperature detection unit, an LCD (liquid crystal display) unit, an alarming unit and a control unit which are connected onto the periphery of the ARM9 processor are used for realizing temperature detection, LCD display, emergency control of faults, gear control and power-on self-test control. The detection control device has the advantages of capability of detecting and controlling voltage within 10 KV and current within 1KA of the high-power digital power amplifier, and can be applied to a high-power digital audio power amplifying system.
Description
Technical field
The invention belongs to the electronic circuit technology field, particularly a kind of detection control circuit, can be used for high power digital Audio power amplifier system.
Background technology
Along with the development of science and technology, the high power digital power amplifier is being played the part of important role in fields such as national defence, industry.In order effectively to detect and control figure power amplifier duty, installation and measuring control device on the digital power amplifier cabinet, can detect in real time the running parameter of digital power amplifier, the duty of control figure power amplifier, to various faults and the alarm of digital power amplifier.
The detection of present modal digital power amplifier has dual mode.A kind of is the mutual inductance detection method, and another kind is the electric resistance partial pressure detection method.Wherein:
The mutual inductance detection method, the general high-voltage large current that is used for, its mutual inductor is comprised of main winding, auxiliary winding, iron core and the framework etc. of mutually insulated, when the electric current that varies in size that main winding flows through, auxiliary winding just can induce the different voltage of corresponding height, the voltage of auxiliary winding is measured, just can calculate the voltage of main winding, but when detection voltage was high, its mutual inductor insulation difficulty was large, because making volume, quality, the price of mutual inductance circuit, insulation all improves, when electric current was larger, magnetic flux density there will be saturated phenomenon, and dynamic range is little.
The electric resistance partial pressure detection method, with high voltage after dividing potential drop, by measuring the voltage of divider resistance, the voltage before just can calculating partial pressure, but detect voltage when high, the electric resistance partial pressure detection method need to design electrical isolation circuit ability security measurement.
Patent Office of the People's Republic of China in 2010 announce by Tianjin Xianwei Railway Electronic Equipments Co., Ltd.'s application, Granted publication number is CN201497905U, China Patent No. (ZL) is: the patent of No. 200920220841.8 " Multifunctional digital power amplifier detecting control system ", although this system has the functions such as detection, control and demonstration, but it can only be applied to the miniwatt digital power amplifier, employing is than 51 processor of single chip computer of low side, and processing power is limited.
In sum, common digital power amplifier detection control apparatus is difficult to meet the demand of high power digital power amplifier high-voltage large current at present, and adopts than the processor of low side more, and is low to processing, transmission and the control ability of data.
Summary of the invention
The present invention is directed to the deficiency that the existing digit power amplifier detects control system, a kind of detection control apparatus of high power digital power amplifier is provided,, to improve processing, transmission and the control ability to data, meet the high power digital power amplifier high-voltage large current demand of 10KV alternating voltage and 1KA exchange current.
For achieving the above object, the present invention includes:
Sampling plate, be used for the high-voltage large current isolation of measured number power amplification system output is converted into the small voltage signal, is transferred to master control borad; Master control borad, receive the sampling plate signal, detects the running parameters such as current/voltage, the duty of control figure power amplification system;
It is characterized in that:
Above-mentioned sampling plate, comprise Hall current sensor, resitstance voltage divider, voltage follower and Hall voltage sensor; This Hall current sensor, its input end is connected with the large current signal of 1KA in the system under test (SUT) load, and output terminal is connected with master control borad, is used for the large current signal of 1KA is converted into the small voltage signal of 2V; This resitstance voltage divider is in parallel with the 10KV high voltage in the system under test (SUT) load, signal after dividing potential drop is through voltage follower, access Hall voltage sensor, by the Hall voltage sensor with the isolation of 10KV high voltage signal, export to master control borad after being converted into 2V small voltage signal;
Above-mentioned master control borad, be centered by the ARM9 processor, periphery be connected with voltage detection unit, current detecting unit,, temperature detecting unit, memory cell, LCD liquid crystal display, control module, alarm unit; Wherein: voltage detection unit, current detecting unit and temperature detecting unit, be connected with the D/A converter ADC of ARM9 processor, be used for the analog voltage signal of voltage detecting, current detecting and temperature detection is converted into digital signal; Memory cell, be connected with the memory controller of ARM9 processor, is used for storage program and ephemeral data, guarantees that program can normally move; The LCD liquid crystal display, be connected with the lcd controller of ARM9 processor, is used for showing detected parameters and warning message; Control module, be connected with the general input/output port GPIO of ARM9 processor, is used for controlling the duty of ARM9 processor and system under test (SUT); Alarm unit, be connected with the pulse-length modulation port PWM of ARM9 processor, is used to indicate duty and the fault alarm of ARM9 processor.
The detection control apparatus of above-mentioned high power digital power amplifier is characterized in that: described voltage follower, comprise operational amplifier, input resistance and feedback resistance, and this operational amplifier positive input is connected with resitstance voltage divider by the series connection input resistance; This feedback resistance is connected across between the reverse input end and output terminal of operational amplifier; Input resistance is identical with the resistance of feedback resistance, for realizing that resitstance voltage divider output voltage signal 1:1 follows, outputs to the Hall voltage sensor.
the detection control apparatus of above-mentioned high power digital power amplifier, it is characterized in that: described voltage detection unit, comprise voltage divider, RMS to DC circuit and amplifying circuit, this voltage divider is in parallel with the 2V alternating voltage signal of sampling plate Hall voltage sensor output, dividing potential drop is the 200mV alternating voltage, be converted into the 100mV d. c. voltage signal through the RMS to DC circuit, be enlarged into the 2V d. c. voltage signal by amplifying circuit again, be input to the D/A converter ADC of AMR9 processor, be used for the 2V simulation alternating voltage signal of sampling plate Hall voltage sensor output is converted into digital signal.
The detection control apparatus of above-mentioned high power digital power amplifier is characterized in that: described current detecting unit comprises voltage divider, RMS to DC circuit and amplifying circuit; This voltage divider is in parallel with the 2V alternating voltage signal of sampling plate Hall current sensor output, dividing potential drop is the 200mV alternating voltage, after the RMS to DC circuit is converted into the 100mV d. c. voltage signal, be enlarged into the 2V d. c. voltage signal by amplifying circuit again, be input to the D/A converter ADC of AMR9 processor, be used for the 2V simulation alternating voltage signal of sampling plate Hall current sensor output is converted into digital signal.
The detection control apparatus of above-mentioned high power digital power amplifier is characterized in that: described temperature detecting unit comprises platinum resistance thermometer sensor,, temperature transmitter and temperature following device; This platinum resistance thermometer sensor, is positioned at the cabinet of system under test (SUT), be connected with temperature transmitter, being used for is the 2V d. c. voltage signal with temperature inversion, and is input to the D/A converter ADC of AMR9 processor by the temperature following device, and the temperature value of system under test (SUT) cabinet is converted into digital signal.
The detection control apparatus of above-mentioned high power digital power amplifier is characterized in that: described memory cell, comprise Norflash storer and SDRAM storer, and Norflash is used for storage program; SDRAM is used for interim store data, guarantees that program can normally move;
The detection control apparatus of above-mentioned high power digital power amplifier is characterized in that: described control module comprises an ARM9 restart processor key, four gear switch keys, a power-on self-test options button; This is restarted key and is connected with ARM9 restart processor RESET port, and this gear switch key all is connected with ARM9 processor input/output end port GPIO with the power-on self-test options button, is used for controlling system under test (SUT) work gear and power-on self-test.
The detection control apparatus of above-mentioned high power digital power amplifier, it is characterized in that: the ARM9 processor of this systematic master control board also is provided with the power-on self-test module, be used for system under test (SUT) is carried out self check, its self test mode is selected power-on self-test or skips self check by the power-on self-test options button, this selftest module is connected with the processor serial port of system under test (SUT) by the ARM9 processor of master control borad, realizes communication for coordination.
The detection control apparatus of above-mentioned high power digital power amplifier, it is characterized in that: described master control borad, adopt the ARM9 processor of ARM920T series, the UART Universal Asynchronous Receiver Transmitter UART port of this processor is connected with system under test (SUT), is used for communicating with system under test (SUT).
The detection control apparatus of above-mentioned high power digital power amplifier, it is characterized in that: operation multitask embedded OS μ C/OS-II on the main control chip ARM9 processor of described master control borad, for detection of output voltage, output current, output power and the working temperature multiple parameters of system under test (SUT).
The present invention compared with prior art, has the following advantages:
1. the present invention is because sampling plate is selected Hall current sensor, resitstance voltage divider, voltage follower and Hall voltage sensor, 10KV voltage, 1KA electric current are converted into the 2V voltage signal, so can detect the high-power output of high power digital power amplifier 10KV voltage, 1KA electric current;
2. the present invention adopts the ARM9 processor of ARM920T series due to master control borad, thereby has stronger arithmetic capability, has improved detecting the processing power of data; Simultaneously due to the compatible multiple communication modes of ARM9 processor, thereby can communicate by letter with system under test (SUT) by asynchronism transceiver UART port, improve the transmittability to the detection data; Connect gear switch key and a plurality of control buttons of self check options button because the ARM9 processor is peripheral in addition, improved detecting the control ability of data.
3. the present invention is due to operation multitask embedded OS μ C/OS-II on the ARM9 processor, thereby can detect in real time and by LCD, show the parameters such as output voltage, output current, output power, working temperature of system under test (SUT); Because the ARM9 processor is provided with the power-on self-test module, thereby can realize the power-on self-test of system under test (SUT).
Description of drawings
Fig. 1 is one-piece construction block diagram of the present invention;
Fig. 2 is ARM9 processor annexation block diagram in the present invention;
Fig. 3 is the circuit structure diagram of sampling plate voltage follower of the present invention;
Fig. 4 is the circuit structure diagram of master control borad voltage detection unit of the present invention;
Fig. 5 is the circuit structure diagram of master control borad current detecting unit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is further described:
With reference to Fig. 1, the detection control apparatus of high power digital power amplifier provided by the invention, comprise sampling plate 1 and master control borad 2.
Sampling plate 1, be used for 10KV voltage and the 1KA current signal of load output are converted into the 2V voltage signal; It comprises Hall current sensor 11, resitstance voltage divider 12, voltage follower 13 and Hall voltage sensor 14; Hall current sensor 11 input ends are connected with the system under test (SUT) load, and output terminal is connected with master control borad 2; Resitstance voltage divider 12 is in parallel with the system under test (SUT) load, and the signal after dividing potential drop, through voltage follower 13, accesses Hall voltage sensor 14.
Master control borad 2, be used for receiving the current detection signal of sampling plate Hall current sensor 11 outputs and the voltage detection signal of Hall voltage sensor 14 outputs; This master control borad is centered by the ARM9 processor, and periphery is connected with voltage detection unit 21, current detecting unit 22, temperature detecting unit 23, memory cell 24, LCD display unit 25, control module 26, alarm unit 27; Wherein:
Voltage detection unit 21, current detecting unit 22 and temperature detecting unit 23, all be connected with the D/A converter ADC port of ARM9 processor, is used for the analog voltage signal of voltage detecting, current detecting and temperature detection is converted into digital signal;
Memory cell 24, be used for storage program and ephemeral data, with the memory controller of ARM9 processor, is connected;
LCD display unit 25, be connected with the lcd controller of ARM9 processor;
Control module 26, for the duty of controlling ARM9 processor and system under test (SUT), GPIO is connected with ARM9 processor input/output end port;
Alarm unit 27, be used to indicate duty and the fault alarm of ARM9 processor, with the pulse width modulation (PWM) port of ARM9 processor, is connected;
Above-mentioned these element circuits that are connected with the ARM9 processor, its structure as described in Figure 2, wherein:
Voltage detection unit 21, mainly be electrically connected to and formed by voltage divider 211, RMS to DC circuit 212 and amplifying circuit 213, its circuit structure such as Fig. 4, but be not limited to this structure.
Current detecting unit 22, mainly be electrically connected to and formed by voltage divider 221, RMS to DC circuit 222 and amplifying circuit 223, its circuit structure such as Fig. 5, but be not limited to this structure;
Temperature detecting unit 23, comprise platinum resistance thermometer sensor, 231, temperature transmitter 232 and temperature following device 233; This platinum resistance thermometer sensor, 231 is positioned at the cabinet of system under test (SUT), be connected 232 with temperature transmitter, be used for temperature signal is converted into d. c. voltage signal, and be input to the D/A converter ADC of AMR9 processor by temperature following device 233, the temperature value of system under test (SUT) cabinet is converted into digital signal;
Memory cell 24, be used for storage program and ephemeral data, and it comprises Norflash storer 241 and SDRAM storer 242, all with the memory controller of ARM9 processor, is connected;
Control module 26, it comprises an ARM9 restart processor key 261, four gear switch keys 262, a power-on self-test options button 263; This is restarted key 261 and is connected with ARM9 restart processor RESET port; This gear switch key 262 all is connected with ARM9 processor input/output end port GPIO with power-on self-test options button 263;
Alarm unit 27, it comprises LED light and hummer, all with the pulse width modulation (PWM) port of ARM9 processor, is connected.
With reference to Fig. 3, the voltage follower 13 of described sampling plate 1, comprise operational amplifier U1, input resistance R1 and feedback resistance R2; This operational amplifier U1 positive input is connected with resitstance voltage divider 12 by series connection input resistance R1, feedback resistance R2 is connected across between the reverse input end and output terminal of operational amplifier U1, input resistance R1 is identical with the resistance of feedback resistance R2, for realizing that resitstance voltage divider 12 output voltage signal 1:1 follow, outputs to Hall voltage sensor 14.
With reference to Fig. 4, described voltage detection unit 21, its voltage divider 211 is connected with sampling plate Hall voltage sensor 14 output terminals, after resistance R 3, R4 dividing potential drop, be input to RMS to DC circuit 212 through current-limiting resistance R5, after the RC filtering circuit of the direct current signal of RMS to DC circuit 212 outputs by resistance R 6 and capacitor C 1 composition, be input to amplifying circuit 213 and amplify, enlargement factor K1 sets by resistance R 7 and R8, wherein
D. c. voltage signal after amplification is input to the D/A converter ADC of AMR9 processor.
With reference to Fig. 5, described current detecting unit 22, its voltage divider 221 is connected with sampling plate Hall current sensor 11 output terminals, after resistance R 9, R10 dividing potential drop, be input to RMS to DC circuit 222 through current-limiting resistance R11, after the RC filtering circuit of the direct current signal of RMS to DC circuit 222 outputs by resistance R 12 and capacitor C 2 compositions, be input to amplifying circuit 223 and amplify, enlargement factor K2 sets by R13 and R14, wherein
D. c. voltage signal after amplification is input to the D/A converter ADC of AMR9 processor.
Principle of work of the present invention is as follows:
At first, electric current and the voltage of high power digital power amplifier are detected.its current detecting process is, the Hall current sensor 11 of sampling plate 1 is converted into 2V alternating voltage signal with the 1KA exchange current of load output and is input to the current detecting unit 22 of master control borad 2, after the voltage divider 221 of current detecting unit 22 is the 200mV alternating voltage with 2V alternating voltage signal dividing potential drop, be converted into the 100mV d. c. voltage signal through RMS to DC circuit 222, be enlarged into the 2V d. c. voltage signal by amplifying circuit 223 again, the D/A converter ADC that is input to the AMR9 processor is converted into digital signal, process through the AMR9 processor, control the current value that LCD liquid crystal 25 shows system under test (SUT),
its voltage detecting process is, resitstance voltage divider 12 by sampling plate 1, voltage follower 13 and Hall voltage sensor 14, the 10KV alternating voltage of load output is converted into 2V alternating voltage signal is input to the voltage detection unit 21 of master control borad 2, after the voltage divider 211 of voltage detection unit 21 is the 200mV alternating voltage with 2V alternating voltage signal dividing potential drop, be converted into the 100mV d. c. voltage signal through RMS to DC circuit 212, be enlarged into the 2V d. c. voltage signal by amplifying circuit 213 again, the D/A converter ADC that is input to the AMR9 processor is converted into digital signal, process through the AMR9 processor, control the magnitude of voltage that LCD liquid crystal 25 shows system under test (SUT).
Secondly, the power of high power digital power amplifier is detected, namely, by the product of AMR9 processor calculating voltage detected value and current detection value, obtain the power detection value, and by LCD liquid crystal 25, show.
Again, the temperature of high power digital power amplifier detected.Its temperature detection process is, connect temperature transmitter 231 by the platinum resistance thermometer sensor, 231 that is positioned at the system under test (SUT) cabinet, temperature signal is converted into the 2V d. c. voltage signal, and by the D/A converter ADC that temperature following device 233 is input to the AMR9 processor, be converted into digital signal, process, control LCD liquid crystal 25 through the AMR9 processor and show the temperature value of systems under test (SUT);
Finally, carry out fault alarm, gear switching and the power-on self-test of high power digital power amplifier are selected to control.Wherein:
Fault alarm, be the threshold value of magnitude of voltage, current value, performance number and the temperature value that will detect by the ARM9 processor and systemic presupposition relatively, when arbitrary detected value in voltage detecting value, current detection value, power detection value and temperature detection value surpasses threshold value, the ARM9 processor is controlled LED light and buzzer warning, simultaneously alerting signal UART Universal Asynchronous Receiver Transmitter UART port is sent to the processor of system under test (SUT);
The gear switching, to select the work gear by the gear switch key 262 that is connected with the ARM9 processor, the ARM9 processor shows by LCD liquid crystal 25 after the gear switching signal being detected, simultaneously gear switching signal UART Universal Asynchronous Receiver Transmitter UART port is sent to the processor of system under test (SUT);
Power-on self-test, select power-on self-test or skip self check by the power-on self-test options button 263 that is connected with the ARM9 processor, power-on self-test is completed in the processor communication for coordination of ARM9 processor UART Universal Asynchronous Receiver Transmitter UART port and system under test (SUT), and by LCD liquid crystal 25, shows.
Above description is only example of the present invention, does not form any limitation of the invention.Obviously for those skilled in the art; after understanding content of the present invention and principle; all may be in the situation that do not deviate from the principle of the invention, structure; carry out various modifications and change on form and details; the voltage follower circuit 13 of sampling plate 1 for example; the voltage detecting circuit 21 of master control borad and current detection circuit 22 can be realized by other circuit, but these corrections based on inventive concept and change are still within claim protection domain of the present invention.
Claims (10)
1. detection control apparatus that is used for the high power digital power amplifier comprises:
Sampling plate (1), be used for the high-voltage large current isolation of measured number power amplification system output is converted into the small voltage signal, is transferred to master control borad;
Master control borad (2), receive the sampling plate signal, detects the running parameters such as current/voltage, the duty of control figure power amplification system;
It is characterized in that:
Described sampling plate (1), comprise Hall current sensor (11), resitstance voltage divider (12), voltage follower (13) and Hall voltage sensor (14); This Hall current sensor, its input end is connected with the large current signal of 1KA in the system under test (SUT) load, and output terminal is connected with master control borad, is used for the large current signal of 1KA is converted into the small voltage signal of 2V; This resitstance voltage divider is in parallel with the 10KV high voltage in the system under test (SUT) load, signal after dividing potential drop is through voltage follower, access Hall voltage sensor, by the Hall voltage sensor with the isolation of 10KV high voltage signal, export to master control borad after being converted into 2V small voltage signal;
Described master control borad (2), be centered by the ARM9 processor, periphery is connected with voltage detection unit (21), current detecting unit (22), temperature detecting unit (23), memory cell (24), LCD liquid crystal display (25), control module (26), alarm unit (27); Wherein:
Voltage detection unit, current detecting unit and temperature detecting unit, be connected with the D/A converter ADC of ARM9 processor, is used for the analog voltage signal of voltage detecting, current detecting and temperature detection is converted into digital signal;
Memory cell, be connected with the memory controller of ARM9 processor, is used for storage program and ephemeral data, guarantees that program can normally move;
The LCD liquid crystal display, be connected with the lcd controller of ARM9 processor, is used for showing detected parameters and warning message;
Control module, be connected with the general input/output port GPIO of ARM9 processor, is used for controlling the duty of ARM9 processor and system under test (SUT);
Alarm unit, be connected with the pulse-length modulation port PWM of ARM9 processor, is used to indicate duty and the fault alarm of ARM9 processor.
2. the detection control apparatus of high power digital power amplifier according to claim 1, it is characterized in that: described voltage follower (13), comprise operational amplifier (131), input resistance (132) and feedback resistance (133), this operational amplifier (131) positive input is connected with resitstance voltage divider (12) by series connection input resistance (132); This feedback resistance (133) is connected across between the reverse input end and output terminal of operational amplifier (131); Input resistance (132) is identical with the resistance of feedback resistance (133), for realizing that resitstance voltage divider (12) output voltage signal 1:1 follows, outputs to Hall voltage sensor (14).
3. the detection control apparatus of high power digital power amplifier according to claim 1, it is characterized in that: described voltage detection unit (21), comprise voltage divider (211), RMS to DC circuit (212) and amplifying circuit (213), this voltage divider (211) is in parallel with the 2V alternating voltage signal of sampling plate Hall voltage sensor (14) output, dividing potential drop is the 200mV alternating voltage, be converted into the 100mV d. c. voltage signal through RMS to DC circuit (212), be enlarged into the 2V d. c. voltage signal by amplifying circuit (213) again, be input to the D/A converter ADC of AMR9 processor, be used for the 2V simulation alternating voltage signal of sampling plate Hall voltage sensor (14) output is converted into digital signal.
4. the detection control apparatus of high power digital power amplifier according to claim 1, it is characterized in that: described current detecting unit (22) comprises voltage divider (221), RMS to DC circuit (222) and amplifying circuit (223); This voltage divider (221) is in parallel with the 2V alternating voltage signal of sampling plate Hall current sensor (11) output, dividing potential drop is the 200mV alternating voltage, after RMS to DC circuit (222) is converted into the 100mV d. c. voltage signal, be enlarged into the 2V d. c. voltage signal by amplifying circuit (223) again, be input to the D/A converter ADC of AMR9 processor, be used for the 2V simulation alternating voltage signal of sampling plate Hall current sensor (11) output is converted into digital signal.
5. the detection control apparatus of high power digital power amplifier according to claim 1, it is characterized in that: described temperature detecting unit (23) comprises platinum resistance thermometer sensor, (231), temperature transmitter (232) and temperature following device (233); This platinum resistance thermometer sensor, (231) is positioned at the cabinet of system under test (SUT), be connected with temperature transmitter (231), being used for is the 2V d. c. voltage signal with temperature inversion, and be input to the D/A converter ADC of AMR9 processor by temperature following device (233), the temperature value of system under test (SUT) cabinet is converted into digital signal.
6. the detection control apparatus of high power digital power amplifier according to claim 1, it is characterized in that: described memory cell (24), comprise Norflash storer (241) and SDRAM storer (242), Norflash(241) be used for storage program; SDRAM(242) be used for interim store data, guarantee that program can normally move.
7. the detection control apparatus of high power digital power amplifier according to claim 1, it is characterized in that: described control module (26) comprises an ARM9 restart processor key (261), four gear switch keys (262), a power-on self-test options button (263); This is restarted key (261) and is connected with ARM9 restart processor RESET port, this gear switch key (262) all is connected with ARM9 processor input/output end port GPIO with power-on self-test options button (263), is used for controlling system under test (SUT) work gear and power-on self-test.
8. the detection control apparatus of high power digital power amplifier according to claim 1 and 2, it is characterized in that: the ARM9 processor of this systematic master control board (2) also is provided with power-on self-test module (27), be used for system under test (SUT) is carried out self check, its self test mode is selected power-on self-test or skips self check by power-on self-test options button (263), this selftest module (27) is connected with the processor serial port of system under test (SUT) by the ARM9 processor of master control borad, realizes communication for coordination.
9. the detection control apparatus of high power digital power amplifier according to claim 1, it is characterized in that: described master control borad (2), adopt the ARM9 processor of ARM920T series, the UART Universal Asynchronous Receiver Transmitter UART port of this processor is connected with system under test (SUT), is used for communicating with system under test (SUT).
10. the detection control apparatus of high power digital power amplifier according to claim 1, it is characterized in that: operation multitask embedded OS μ C/OS-II on the main control chip ARM9 processor of described master control borad (2), for detection of output voltage, output current, output power and the working temperature multiple parameters of system under test (SUT).
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