CN203054048U - Touch and portable-type digital storage oscilloscope based on NIOS II platform - Google Patents

Touch and portable-type digital storage oscilloscope based on NIOS II platform Download PDF

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Publication number
CN203054048U
CN203054048U CN 201220616590 CN201220616590U CN203054048U CN 203054048 U CN203054048 U CN 203054048U CN 201220616590 CN201220616590 CN 201220616590 CN 201220616590 U CN201220616590 U CN 201220616590U CN 203054048 U CN203054048 U CN 203054048U
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China
Prior art keywords
touch
voltage
fpga control
nios
digital storage
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Expired - Fee Related
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CN 201220616590
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Chinese (zh)
Inventor
王宾
于水娟
石晓艳
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Anhui University of Science and Technology
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Anhui University of Science and Technology
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Priority to CN 201220616590 priority Critical patent/CN203054048U/en
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Abstract

The utility model discloses a touch and portable-type digital storage oscilloscope based on an NIOS II platform. The touch and portable-type digital storage oscilloscope based on the NIOS II platform includes an FPGA control board and a power supply module; signal adjustment circuits are integrated inside the FPGA control board; a TFT color screen, an SD card and an SDRAM are arranged at I/O ports of the FPGA control board in an expansion manner; dual-channel analog signals are accessed to the signal adjustment circuits of the FPGA control board through BNC interfaces, and proper voltage conversion and adjustment can be performed on the dual-channel analog signals; adjusted signals are accessed to an analog-to-digital converter, and the adjusted signals are converted into digital signals through sampling; the digital signals are stored in an FIFO stack constructed inside the FPGA control board; an NIOSII soft core is embedded inside the FPGA control board; and the NIOSII soft core reads sampling values in the FIFO stack into software, and the sampling values are processed, displayed and saved. According to the touch and portable-type digital storage oscilloscope of the utility model adopted, a cumbersome appearance of an oscilloscope in the prior art can be changed, and the touch and portable-type digital storage oscilloscope of the utility model is advantageous in miniaturization and precision; touch screen technology is adopted, such that human-machine interaction becomes more smooth and convenient; and a miscellaneous hardware architecture of the oscilloscope in the prior art can be changed, and an SOPC system is designed.

Description

Touch portable digital storage oscilloscope based on NIOS II platform
Technical field
The utility model relates to the oscillograph field, and the utility model relates to a kind of touch portable digital storage oscilloscope based on NIOS II platform.
Background technology
The conventional digital oscillograph is relatively heavier, portable inadequately, and the man-machine interface operation is also complicated in addition, and expensive, and more better price is more than 5000 yuan; Yet bulky oscillograph is inconvenient to carry in some application scenarios, perhaps for cost consideration, the higher oscillograph of performance is expensive, and the low oscillograph performance of price is not good enough, portable, tangibly, cheap digital oscilloscope has been designed in comprehensive above consideration.
The utility model content
The utility model purpose is exactly in order to remedy the defective of prior art, a kind of touch portable digital storage oscilloscope based on NIOS II platform to be provided.
The utility model is achieved through the following technical solutions:
A kind of touch portable digital storage oscilloscope based on NIOS II platform, it is characterized in that: include the FPGA control panel, power module, FPGA control panel inside is integrated with signal adjustment circuit, the I/O mouth expansion of FPGA control panel has the TFT color screen, the SD card, SDRAM, the signal input part of signal adjustment circuit is connected with bnc interface, the binary channels simulating signal is carried out suitable voltage transformation and adjustment by the signal adjustment circuit that a bnc interface is connected to the FPGA control panel respectively, signal after the adjustment inserts analog to digital converter through over-sampling, convert digital signal to, digital signal is stored in the FIFO stack of FPGA control panel internal build; The inner soft nuclear of NIOS II that embeds of FPGA control panel, the soft nuclear of NIOS II reads the sampled value in the FIFO stack in the software, handles, shows, preserves.
Described touch portable digital storage oscilloscope based on NIOS II platform, it is characterized in that: the controller of described TFT color screen is SSD1963, and the TFT color screen carries touch-screen, the controller of touch-screen is XPT2046, is used for the realization of man-machine interaction.The SD card is used for reading and writing of files, preserves the waveform that collects; SDRAM is used for providing operation required internal memory to the NIOS kernel.
Described touch portable digital storage oscilloscope based on NIOS II platform is characterized in that: described analog to digital converter adopts AD9288.
Described touch portable digital storage oscilloscope based on NIOS II platform, it is characterized in that: described power module is divided into digital power and analog power, the digital power part: externally fed is 7V voltage, be transformed into 3.3V voltage through the LM2596-3.3V switch chip, be responsible for the I/O mouth relevant portion power supply to FPGA, 3.3V be transformed into 1.2V voltage through LM1117-1.2V, give the power supply of FPGA kernel, 3.3V is transformed into the PLL circuit supply that 2.5V voltage is given FPGA through SPX3940-2.5V; Analog power part: 7V is transformed into 5V voltage through LM1117-5V and gives the power supply of operational amplifier positive voltage, 5V through the MAX735 switch chip be transformed into-5V voltage gives the power supply of operational amplifier negative voltage.
Principle of the present utility model is:
Simulating signal is carried out suitable voltage scaling, is promoted conversion by signal conditioning circuit, through after the sampling of AD chip, reads data and processing by the soft nuclear of NIOS II then.
The utility model has the advantages that:
(1) structure is improved, changed the image of oscillograph heaviness in the past, miniaturization, precise treatment.
(2) adopt touch screen technology, make man-machine interaction become more smooth and easy convenient.
(3) change the numerous and diverse hardware architecture of oscillograph in the past, design the SOPC system.
(4) transformation of system architecture realizes SOPC system truly.
(5) at a high speed, the design of high precision, low noise analog input channel, and the optimization of pcb board wiring improves anti-interference.
(6) embedding of figure kernel improves operability, the convenience of man-machine interaction.
Description of drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the circuit diagram of analog power.
Fig. 3 is the circuit diagram of digital power.
Fig. 4 is the circuit diagram of signal adjustment circuit.
Embodiment
As shown in Figure 1, a kind of touch portable digital storage oscilloscope based on NIOS II platform, include FPGA control panel 1, power module 2, FPGA control panel 1 inside is integrated with signal adjustment circuit 3, the I/O mouth expansion of FPGA control panel 1 has TFT color screen 4, SD card 5, SDRAM 6, the signal input part of signal adjustment circuit 3 is connected with bnc interface 7, the binary channels simulating signal is carried out suitable voltage transformation and adjustment by the signal adjustment circuit 3 that a bnc interface 7 is connected to FPGA control panel 1 respectively, signal after the adjustment inserts analog to digital converter 8 through over-sampling, convert digital signal to, digital signal is stored in the FIFO stack of FPGA control panel 1 internal build; The FPGA control panel 1 inner soft nuclear of NIOS II that embeds, the soft nuclear of NIOS II reads the sampled value in the FIFO stack in the software, handles, shows, preserves.
The controller of TFT color screen 4 is SSD1963, and TFT color screen 4 carries touch-screen, and the controller of touch-screen is XPT2046, is used for the realization of man-machine interaction.SD card 5 is used for reading and writing of files, preserves the waveform that collects; SDRAM 6 is used for providing operation required internal memory to the NIOS kernel.
Shown in Fig. 2,3, power module is divided into digital power and analog power, digital power 3 parts: externally fed is 7V voltage, be transformed into 3.3V voltage through the LM2596-3.3V switch chip, be responsible for the I/O mouth relevant portion power supply to FPGA, 3.3V be transformed into 1.2V voltage through LM1117-1.2V, give the power supply of FPGA kernel, 3.3V is transformed into the PLL circuit supply that 2.5V voltage is given FPGA through SPX3940-2.5V; Analog power 2 parts: 7V is transformed into 5V voltage through LM1117-5V and gives the power supply of operational amplifier positive voltage, 5V through the MAX735 switch chip be transformed into-5V voltage gives the power supply of operational amplifier negative voltage.
As shown in Figure 4, relay K 1 control coupling scheme: K1 closure is DC coupling, is broken as AC coupling.Input signal process R1, R2, the R3 resistor voltage divider network is decayed, and relay K 2 is responsible for the control attenuation multiples, carries out voltage follow through operational amplifier OP1 then, through after 1/3 decay, sends into programmable amplifier AD603 again.The REF3040 chip is reference voltage source, as the reference voltage of D/A chip and the control voltage of AD603.AD5320 is the D/A chip, the enlargement factor of its output control AD603.After signal suitably amplifies (dwindling) through AD603, after process operational amplifier OP3 carries out the voltage lifting again, send into the sampling of AD9288 chip, sampled result will be deposited in the FIFO stack of FPGA inside by the clock signal.
The key technical indexes of the present utility model:
(1) digital bandwidth 100MHz.
(2) analog bandwidth 10MHz.
(3) storage depth: binary channels, every passage 8KB.
(4) voltage sensitivity: 25mv/div ~ 10v/div.
(5) sweep fast scope: 100ns/div ~ 10s/div.
Triggering mode: single, normal, automatic.

Claims (4)

1. touch portable digital storage oscilloscope based on NIOS II platform, it is characterized in that: include the FPGA control panel, power module, FPGA control panel inside is integrated with signal adjustment circuit, the I/O mouth expansion of FPGA control panel has the TFT color screen, the SD card, SDRAM, the signal input part of signal adjustment circuit is connected with bnc interface, the binary channels simulating signal is carried out suitable voltage transformation and adjustment by the signal adjustment circuit that a bnc interface is connected to the FPGA control panel respectively, signal after the adjustment inserts analog to digital converter through over-sampling, convert digital signal to, digital signal is stored in the FIFO stack of FPGA control panel internal build.
2. the touch portable digital storage oscilloscope based on NIOS II platform according to claim 1, it is characterized in that: the controller of described TFT color screen is SSD1963, and the TFT color screen carries touch-screen, the controller of touch-screen is XPT2046.
3. the touch portable digital storage oscilloscope based on NIOS II platform according to claim 1 is characterized in that: described analog to digital converter employing AD9288.
4. the touch portable digital storage oscilloscope based on NIOS II platform according to claim 1, it is characterized in that: described power module is divided into digital power and analog power, the digital power part: externally fed is 7V voltage, be transformed into 3.3V voltage through the LM2596-3.3V switch chip, be responsible for the I/O mouth relevant portion power supply to FPGA, 3.3V be transformed into 1.2V voltage through LM1117-1.2V, give the power supply of FPGA kernel, 3.3V is transformed into the PLL circuit supply that 2.5V voltage is given FPGA through SPX3940-2.5V; Analog power part: 7V is transformed into 5V voltage through LM1117-5V and gives the power supply of operational amplifier positive voltage, 5V through the MAX735 switch chip be transformed into-5V voltage gives the power supply of operational amplifier negative voltage.
CN 201220616590 2012-11-21 2012-11-21 Touch and portable-type digital storage oscilloscope based on NIOS II platform Expired - Fee Related CN203054048U (en)

Priority Applications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103675384A (en) * 2013-12-07 2014-03-26 成都亿盟恒信科技有限公司 Multifunctional handheld double-channel touch oscilloscope and application method thereof
CN104243244A (en) * 2014-10-15 2014-12-24 武汉康曼测控系统有限公司 Monitoring and analyzing system of train communication network
WO2015074300A1 (en) * 2013-11-19 2015-05-28 深圳麦科信仪器有限公司 Full-touch tablet oscilloscope
CN105092922A (en) * 2014-05-05 2015-11-25 西北工业大学 Portable digital storage oscilloscope based on SOPC technology
CN115225558A (en) * 2022-07-12 2022-10-21 中国人民解放军国防科技大学 Audio test maintenance device and test method for communication equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015074300A1 (en) * 2013-11-19 2015-05-28 深圳麦科信仪器有限公司 Full-touch tablet oscilloscope
CN103675384A (en) * 2013-12-07 2014-03-26 成都亿盟恒信科技有限公司 Multifunctional handheld double-channel touch oscilloscope and application method thereof
CN105092922A (en) * 2014-05-05 2015-11-25 西北工业大学 Portable digital storage oscilloscope based on SOPC technology
CN104243244A (en) * 2014-10-15 2014-12-24 武汉康曼测控系统有限公司 Monitoring and analyzing system of train communication network
CN104243244B (en) * 2014-10-15 2017-11-17 武汉康曼测控系统有限公司 TCN fault detect and analysis method and system
CN115225558A (en) * 2022-07-12 2022-10-21 中国人民解放军国防科技大学 Audio test maintenance device and test method for communication equipment
CN115225558B (en) * 2022-07-12 2024-04-02 中国人民解放军国防科技大学 Communication equipment audio test method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130710

Termination date: 20131121