Since the concept of intelligent hardware is premined, domestic manufactured products are often naming with intelligent XXX as long as they are slightly psyllocious, and most products are "hanging sheep selling dog meat". It is not practical to be in the fun, not intelligent.
However, recently loved the nets to get a more interesting smart product - a portable programmable measuring instrument Wavexpert, launched by Wei Wei, not only combines multi-channel oscilloscope, arbitrary signal generator, protocol analyzer, logic The function of numerous electronic test instruments such as analyzers, and combines embedded systems and mobile Internet technologies, and can achieve measurement functions through software app. Today, the engineer of the panel network will take everyone to experience this intelligent meter Wavexpert prototype.
Wavexpert is very small, only one adult slap size is very suitable for carrying it with you, an engineer having a demand for measuring instruments such as an oscilloscope that often requires a business trip, and an engineer such as a measurement instrument such as an oscilloscope is a nice choice. At present, Wavexpert has not yet been officially launched. We get the engineering sample, the entire WAVEXPERT set is also quite rich:
A Wavexpert host, a win 5V / 2.4A power adapter (may be because of the prototype) and a MicroSB cable
P6000 oscilloscope probe kit (including two oscilloscope probe lines, and test assist)
Wavexpert suit
Wavexpert characteristics
Wavexpert uses an aluminum alloy shell, which looks very like charging treasure, still very fashionable. Wavexpert front panel design contains a PMOD extension interface, two DAC outputs, and two ADC inputs, conversion rates up to 100MHz; and rear panels include common interface design, USB2.0 Host interface (equipped with WiFi USB module, support Interconnected with mobile phones, a Gigabit Ethernet port, MicroSD card holder (including MicroSD card, mainly used for storage system launch mirror), MicroSD interface (for power supply or serial debugging), reset indicator.
Wei Weiwei WAVEXPERT
Some main features of Wavexpert:
The core processor uses a high-performance programmable SOC architecture, unique soft / hardware self-update
Built-in high-speed dual-channel digital-to-analog / analog converter, conversion rate up to 100MHz
Complete signal matching circuit, performance approaches professional oscilloscope, with only 1/25 of the desktop oscilloscope
Provide a variety of free measurement class APP, pre-installed dual channel oscilloscope (including spectrum analysis) and arbitrary signal generators (including hand drawn waveforms)
Using high-speed WiFi mode to connect with tablets and mobile phones, realize real-time, anywhere
Support Gigabit Ethernet interface, easy to wiring, realize long-distance or extra-place test measurement
The measurement results can be saved, can be uploaded to the cloud, but also shared by WeChat to friends, and truly call
Data interface protocol open, support MATLAB, LABVIEW, and VC ++, real software definition smart instruments
Operating system support: Windows, Linux, Android, iOS7
Wavexpert measurement
Wavexpert prototype The default system image contains oscilloscope features and signal generators, and we understand Wavexpert in actually testing these features. Prepare before testing:
Wavexpert prototype, radio cable, oscilloscope
A signal generator, a mobile phone with an oscilloscope WAVXXPERT APP and a signal generator SignalXpert App (current SignalXpert is still in the debug stage, but the DAC function can be implemented by oscilloscope APP)
Oscilloscope APP and Signal Generator APP
Oscilloscope function test
Wavexpert as the oscilloscope, the main parameters indicators are as follows:
Sample rate: 100MHz
Accuracy: 12bit
Channel: Dual Channel
Bandwidth: 10MHz (SINE)
Input impedance: 1M
DC coupling method
Maximum input voltage: -5V ~ + 5V (x10 probe)
Maximum input voltage: -250mv ~ + 250mv (x1 probe)
Interior trigger: edge / level
Screen resolution: 1000 Points
Sampling depth: up to 5242880 Points
Data processing power: about 1Mbps
Waveform refresh rate: 30fps
Dead time: 30ms
When testing the WAVEXPERT and the signal generator via the RF cable, the WAVEXPERT is powered on, as shown below
Prepare
At this time, WIFI modules on Wavexpert will broadcast a SSID: Wavexpert, and establish a connection through mobile WiFi, but actually experience, WiFi signal is not too stable, sometimes it is not searched, it is necessary to try several times.
When the oscilloscope app is opened on the first time, an English presentation interface appears, as shown below
Oscilloscope APP interface
The display interface is similar to our usual professional oscilloscope interface, but more streamlined, including basic menu bar, waveform display interface, waveform parameter display bar, especially in the lower left corner, there is a shortcut key, design very intimate . (Next)
The menu column on the right side of the App interface contains the setting of the waveform channel, the measurement tool selection, and the signal trigger. It is some commonly used basic functions. If the Analog menu can set the turn-off shutdown of the channel and the selection of the table gear; the Cursors menu can Select the tool for the X-axis Y axis to implement measurement; the Measure menu does not need to be introduced, you can implement measurement display of peak peaks and frequencies; Trigger menu can set the trigger method, edge or level, the edge, or level, the specific implementation Implementing the small water droplet pattern by the right side of the oscilloscope interface, the specific function introduces as shown below
Menu bar function
Click the setting button at the bottom of the menu bar to enter the settings of the App to Wavexpert connection (as shown below), using the default IP, port number (IP: 192.168.0.1, port number: 8000).
Oscilloscope connection setting
Here, simply test some of the functions of the oscilloscope through the signal generator, the process is no longer detailed, see the following figure and test conclusion
Oscilloscope function test
Wavexpert acts as an intent of the oscilloscope function:
WAVEXPERT will have a distortion in the test 10MHz sine wave, and after multiple measurements, the ideal test environment is not more than 4MHz at the clock frequency.
Wavexpert is currently testing the maximum peak value of the signal waveform (-500MV ~ 500MV), which is higher than the Rui Rui-250MV ~ + 250MV range
From the test results, Wavexpert gives people a surprise, compared to the professional oscilloscope, Wavexpert is too small, but as a programmable portable intelligent oscilloscope, Wavexpert can meet simple usage requirements.
Signal generator function test
Since the App Software SignalXpert of the Wavexpert signal generator is still out of the internal debugging phase, it will be released later. However, we can simply see the DAC's functionality through oscilloscope software Wavexpert.
Directly connecting the DAC output interface of Wavexpert with the oscilloscope test probe interface, select the DAC file provided by Wei Wei and start in the WAVEXPERT setup menu, the result is as shown below
Wavexpert DAC output
Small knot
Weiwei Rui Wavexpert is indeed a very creative test instrument, smart programmable, can reconfigure the machine by replacing the SD card, very powerful secondary development function. The oscilloscope function is basically implemented in the actual use, and the bandwidth limits can only measure the low speed signal, but it is very convenient to control the operation through the mobile phone. In the preliminary experience, I feel that the heat is relatively large, which may be because of the engineering machine, whether it is hardware function or software experience is not perfect, and the progress is very large. Love board engineers will also conduct further evaluation and detailed disassembly, so stay tuned.
At present, Wei Shi Rui provides five sets of engineering samples as trials, welcome to have interested in quick application, especially college teachers or laboratory staff.
Wei Shi Rui WAVEXPERT Intelligent Measuring Instrument University trial activities open!
Original declaration: This article is originally created by the panel network, declined!
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