With the advancement of science and technology, people's life has different new months. There will be different technology products into people's world every day, but behind scientific and technological progress and technology reform, environmental protection has gradually entered people's line of sight, factory automation, automobile The exhaust emissions, the burning of fossil fuels, and it is not affecting our lives. Such as the ozone cavity of the Antarctic, the smog of big cities is not to indicate the importance of air. The quality of the air is closely related to our lives, and how should an engineer understand the state of outdoor air? The answer is this theme of this issue, an outdoor air mass sensor assessment kit ZMOD4510-EVK from IDT.
Simply put about IDT, IDT is mainly committed to providing dedicated communication integrated circuit products for promoting global network intelligence packet processing. On March 30, 2019, Renesa has completed the acquisition of IDT, and the layout of the two companies complementary product line began to create a more comprehensive application solution. Therefore, ZMOD4510-EVK is a product solution for Rissa semiconductor.
The ZMOD4510-EVK Outdoor Air Quality Assessment Suite is an evaluation kit for Rissa ZMOD4510 outdoor air mass sensor module, and ZMOD5410 outdoor air mass sensors can be used to feed back air quality index (AQI). The main principle is that after the outdoor air flows through the sensor, the air quality is fed back by a specific micro-electromechanical system, and then the air quality in the current environment is calculated by the corresponding algorithm, and the latest mixed metal is mainly applied. Oxide technology to achieve gas-to-electrical conversion, in which the fast and accurate detection of the micro gas is achieved, with the MEMS (microcomputer system) to form a single-chip, high sensitivity, high stability air mass sensor.
Using a USB cable is connected to your computer, you can easily obtain quality monitoring of outdoor air on the Windows PC software. According to the standardized outdoor air rating of the US Environmental Protection Agency, the measured concentration of the nitrogen oxide (NOx) and ozone (O3) measured by the sensor is compared to the standard, that is, the current outdoor air quality can be obtained.
Compared to other air quality detection equipment, RissiszMod4510-EVK has a more obvious advantage. First, due to the use of mixed metal oxide technology, with MEMS to achieve small volume, single-chip air quality testing plan, after 15 years of reliability Sexual testing, the sensor is still stable. Mixed metal oxide technology also has a sensitivity to improve environmental silicone pollution. The Rissisa ZMOD4510 is exactly and rigorous at the factory, and each sensor is calibrated by the specified concentration of nitrogen dioxide, even if the product of different batch products also has a stable and consistent performance.
Evaluation video:
Let me start the real introduction of the ZMOD4510-EVK outdoor air quality sensor kit, I want to do my own DIY's air quality related equipment, you need to see it!
The first is the outer packaging, using the extraction type opening method, the front text describes each part of the internal kit, and the bottom web address is about this module.
The outer packaging will first report a fall, open our suit, first to introduce two instructions.
The first one is the rapid start guide of ZMOD4510-EVK outdoor air quality sensor kit. There is a total of four pages, so it is more convenient for our cognitive platform. In the first page, the information provided to us is the relevant software and the download address of the document, in the website of IDt.com/zmod4510-evk.
The second page describes the entire hardware connection and FTDI-driven installation and plug in the USB cable.
On page 3 Tell us in the software downloaded on the web page, we need to select the corresponding module, this time is ZMOD4510-Outdoor Air Quality.
The fourth page is the specific interface of the software part and the data using the ZMOD4510-EVK outdoor air mass sensor kit for collecting air quality.
In general, simple four-sheet paper already contains the process of the entire kit, which can be described as simple. There is also a more detailed suite using documentation in IDT.com/zmod4510-evk, and if you have doubtful friends, you can learn from this document!
This is the time when the main ZMOD4510-EVK outdoor air quality sensor is on the scene. Composed of three parts, a Micro USB line (length 2 meters or more), a GAS SENSOR ZMOD4510 sensor board, and a Hicom V3.0 connecting board, the overall idea is to insert the sensor plate on the HICOM connection board, The USB line is connected to the computer host so that the construction of the entire assessment kit is completed.
Let's take a simple look at the composition of the down board. Then let's see the Sensor board, the structure of the GAS Sensor ZMOD4510 sensor board is very simple, and the main device has only 3 ZMOD4510 sensors, a decoupling capacitor, a straightened horn seat connector.
It is also the case where the simple kit can actually complete the quality of the air quality, which is also benefited from the development of MEMS (micro-electromechanical system), and the complex air quality assessment system is encapsulated in a small structure in 3.0 × 3.0 × 0.7 mm. The interface between 14PIN is defined as follows, only 1, 5, 6, 7, 10, 14 of the only one of 6 PIN, respectively, corresponding power supply VDD, GND, and SCL and SDA of the I2C interface, and two other two respectively INT and reset RES_N.
Similarly, the PIN of the interface is also substantially equal to the number of pins of the ZMOD4510 chip. A total of 12 tubes on the chip. In addition to the definitions on the interface, it is basically a power source and ground. The interface is really simple, mini size, simple structure, greatly reduces the complexity of air quality measurement, even a novice engineer can also easily zMOD4510 to complete an air quality project design.
The working temperature of ZMOD4510 is from -40 ° C to 65 ° C, which basically covers the working environment of most scenes, and the supply of power is input from 1.7V to 3.6V wide voltage input without the need to prepare a specific power supply in the system. 3.0 * 3.0 * 0.7mm 12-LGA package, the miniaturization of the equipment, simple structure, accurate measurement, can be said to be a very good choice in the assessment tool of the air quality, the overall application block diagram can be seen below.
At present, Renesa provides two models (ZMOD4510AI1V, ZMOD4510AI1R) purchase, which is just a packaging.
Next, the HICOM board is introduced, and the Hicom Board is complicated than ZMOD4510 Sensor Board, but it will not be doubtful, which is the kind of panel that is easy to understand.
The front part is mainly the selection of interfaces and power supplies, and an interface for measuring the power consumption of the sensor module. As shown below:
The USB cable is connected to the connection of the computer and the evaluation module via X1.
D1 is used to feed back the status of the USB power source.
K2 is used to select internal power or external power supply.
R19 adjusts the range of 1.7V to 3.6V with the voltage value of the internal power supply.
D3 is an internal power status indicator.
The V EXT portion is an external power interface.
K3 is an interface delayed from the Sensor interface to be connected to the external controller.
K1 is used to assist the current consumed by the sensor module.
D2 LED is used to feed back the sensor.
The back of the board is the circuit of the power supply section and the USB communication section. The power supply section is used by LDO, USB communication is a mature scheme that uses FT2232 programmable USB to serial interface. The remaining IC is the Level Shift Level Conversion Chip for the conversion voltage.
Connect the board and connect to your computer. Here, the author used the ordinary micro UBS data line to replace the original ultra-long line, and it is also possible.
Open IDT.com/zmod4510- Evk website Download Related documents and software.
In accordance with the manual for the construction of the software environment.
It is necessary to pay attention to the path of decompressing, the complete set of software is based on Python implementation, IDT packed Python's program, turned to the executable EXE file, and if the decompressed path has a Chinese path, then the lack of lack cannot be found.
We will start the program in the path of the compressed package to the pure English.
We choose the current evaluation environment, ZMOD4510 - Outdoor Air Quality. Click OK.
After selecting OK, you will open the software environment Click Start Sensor to prepare to start collecting data.
A dialog box is popped up to specify the file saved by the acquisition data. After clicking saving, the software will automatically find the device and start collecting.
The Software section can automatically find the ZMOD4510 evaluation kit from the log box. The software will begin to automatically collect, and the current air quality can be seen through the Algorithm Result section, but the software is relatively adjusted, and information such as the frequency period such as the measurement cannot be specified.
As measurement time increases, measurement time and data can be seen on the log. And synchronizes the representation of the description on the plot of the following plot, and the trend is convenient.
For example, the environment where the author is located, the numerical variation is not large, and the air quality index is about 100.
Comparing the level of air quality index provided by EPA, the air quality of the author is not very good, and later may consider buying an air purifier to improve the quality of life.
Summarize:
This issue of ZMOD4510-EVK outdoor air quality sensor kit assessment is basically here, and then summarize it later. The ZMOD4510 is a crystallization of MEMS technology, integrating complex air quality assessment schemes within 3 * 3 mm packages, which makes miniaturization, easy-to-real maturity of air quality assessment equipment. The integrated assessment module and software can quickly understand the performance and implementation of ZMOD4510. It is a good foundation for the subsequent program design. If you are interested in the ZMOD4510 module, you can access the IDT.com/zmod4510-evk official website for understanding.
Copyright statement: This article is originally created by the Circuit City, prohibiting reprint! If you need to reprint, please contact the website operator to authorize the reprint.
Our other product:
