[PR]
×
[PR]上記の広告は3ヶ月以上新規記事投稿のないブログに表示されています。新しい記事を書く事で広告が消えます。
What technical support is needed to build an IoT energy-saving system?
Building an IoT energy-saving system requires the following technical support:
Sensor technology can be used to monitor and control data in IoT nodes, such as temperature, humidity, light intensity, etc.
Embedded system technology: Embedded system technology can be used to design and develop hardware and software systems Signal interface conversion with specific functions, such as smart home devices, smart home appliances, etc.
Wireless communication technology: Wireless communication technology can be used to connect IoT nodes, enabling them to exchange data and communicate.
Data collection and analysis technology: Data collection and analysis technology can be used to collect a large amount of data from the Internet of Things, and process and analyze these data in order to better understand the operating status of the Internet of Things and carry out effective management.
Cloud computing technology: Cloud computing technology can provide efficient data storage and computing capabilities for the Internet of Things, helping enterprises better manage and analyze Internet of Things data.
Artificial intelligence technology: Artificial intelligence technology can be used to predict and identify abnormal conditions in the Internet of Things, RS485/RS232 transceiver module and analyze and make decisions based on data, so as to achieve more efficient energy management. Blockchain technology: Blockchain technology can be used to protect the security and integrity of IoT data and prevent data from being tampered with or stolen.
PR
What practical PCB layout tips are worth sharing?
It is one of the important links in the process, which has a vital impact on the performance and reliability of the product. When doing PCB layout, following the 3W principles can help designers
Better understanding of layout requirements leads to better board design. Industrial Router/Gateway This article will introduce the specific content of the 3W principle in detail and discuss its application in circuit board design.
1. The definition of 3W principle
The 3W principle refers to "Wiring, Worship, Waste", that is, the three aspects of wiring, power supply and waste. Among them, "connection" refers to the signal transmission lines on the circuit board, including signal lines, power lines, ground wires, etc.; "power supply" refers to the power lines on the circuit board, including power input, power filtering, power distribution, etc.; And "waste" refers to the waste of space on the circuit board, including board size, device layout, line direction, etc. The three areas are interrelated, and problems in one area will affect the other two areas. Therefore, following the 3W principle can help designers better balance the relationship between these three aspects in circuit board design, so as to design a better circuit board.
2. Wiring
Wiring refers to the signal transmission lines on the circuit board, including signal lines, power lines, ground lines, etc. When designing a circuit board, the layout of the wiring is a very critical part. Good wiring layout can improve the reliability and performance of the circuit, and reduce the noise and interference of the circuit. When making wiring layout, the following points need to be paid attention to:
1. The length of the signal transmission route should be as short as possible, which can reduce signal interference and transmission errors.
2. The width and distance of the signal transmission route should be selected reasonably to ensure the stable transmission of the signal.
3. Signal lines and power lines should be separated from each other to avoid power noise
impact on signal transmission.
4. The signal line and ground line should be separated from each other to avoid the influence of ground line noise on signal transmission.
5. The layout of signal transmission routes should avoid crossings and loops to reduce signal interference and transmission errors.
3. Power supply (Worship)
Power supply refers to the power lines on the circuit board, including power input, power filtering, power distribution, etc. The layout of the power supply is a very important part of the circuit board design. When making power supply layout, the following points need to be paid attention to:
1. The power input should be concentrated in one position of the circuit board as much as possible for power filtering.
2. Power filter capacitor
It should be placed as close as possible to the power supply pins to improve the filtering effect.
3. Power distribution should be as balanced as possible to avoid power noise and overload problems.
4. Power distribution and signal lines should be separated from each other to avoid the influence of power noise on signal transmission.
5. The power line and ground line should be separated from each other to avoid the influence of ground line noise on the power supply.
4. Waste
Waste refers to the waste of space on the circuit board, including board size, device layout, line orientation, etc. Single serial port server Waste is also an area of concern when designing a circuit board. When laying out, you need to pay attention to the following points:
1. The size of the circuit board should be as small as possible to reduce material cost and layout complexity.
2. The layout of the device should be reasonable to reduce the length and complexity of the wiring as much as possible.
3. The distance between devices should be reasonable to avoid signal interference and transmission errors.
4. The direction of the line should be simple and direct to reduce signal interference and transmission errors.
5. The use of space should be sufficient to avoid large blank areas on the board.
Which wireless technologies are applied to low-power wireless communication
Low-power wireless communication applies to some of the following common wireless technologies:
Bluetooth Low Energy (BLE): BLE is a Bluetooth Low Energy technology designed for IoT and low-power applications. It provides low power consumption, fast connection and data transmission capabilities in short-distance communication.
Zigbee: Zigbee is a low-power, low-data-rate wireless communication technology for IoT and sensor networks. It uses the low-power IEEE 802.15.4 standard to support multi-device interconnection and self-organizing networks.
Z-Wave: Z-Wave is a low-power wireless communication technology designed specifically for smart homes and the Internet of Things. It provides long-distance communication and high reliability, suitable for connecting various smart home devices.
LoRa (Long Range): LoRa is a long-distance, low-power wireless communication technology suitable for the Internet of Things and sensor networks. It uses low-power, long-range spread-spectrum modulation technology for wide-area coverage and long battery life.
Sigfox: Sigfox is a global Low Power Wide Area Network (LPWAN) technology for connecting low-power devices and IoT applications. It provides low power consumption, and long-distance communication, and is suitable for low data rate applications.
NB-IoT (Narrowband IoT): NB-IoT is a low-power wide-area network (LPWAN) technology based on cellular networks and designed for IoT applications. It offers low power consumption, wide-area coverage, and the ability to connect at scale.
These wireless technologies play an important role in low-power wireless communication and are widely used in the Internet of Things, smart home, industrial automation and other fields.
how to achieve low-power wireless communication in data transmission
BLE, Zigbee, LoRa, SPI/SOC/UART (serial communication) how to achieve low-power wireless communication in data transmission (specific requirements, specific expressions, not rigid and dogmatic)
When it comes to data transfer for low-power wireless communications, here's how each technology achieves low power:
BLE (Bluetooth Low Energy):
Use efficient data compression and packet technology to reduce the amount of data transmission, thereby reducing power consumption.
Use low-power modulation, such as Gaussian Frequency Shift Keying (GFSK) modulation, for efficient data transmission.
Using BLE's connection gap management and data packet processing, the device can enter the low power mode as soon as possible to minimize energy consumption.
Zigbee:
Use the IEEE 802.15.4 standard with low power consumption, and adopt time-division multiple access (TDMA) communication method to reduce power consumption.
By adjusting the sleep and wake-up cycle of the device and setting the communication time slot reasonably, flexible power consumption management is realized.
Adaptive power control strategy is adopted to adjust the transmission power according to the communication distance and channel conditions to balance communication quality and power consumption.
LoRa (Long Range):
Low-power spread spectrum modulation technology is used to reduce transmission power and extend battery life.
Take advantage of the long-distance communication capability and reduce the transmission power level to achieve long-term low-power communication.
The device can select the appropriate transmission rate and modulation parameters according to the communication needs to find the best balance between power consumption and communication range.
SPI/SOC/UART (serial communication):
Use low-power hardware design and circuit optimization to reduce the energy consumption of the communication interface.
Through the appropriate communication rate and optimized communication protocol, the energy consumption required for data transmission is reduced.
Minimize standby power consumption by putting the device into a low-power mode or sleep state when data transfer is not required.
In general, the key to these technologies to achieve low-power wireless communication in data transmission lies in adopting appropriate modulation methods, using low-power hardware design, optimizing communication protocols, and reasonably managing the sleep and wake-up cycles of devices. These methods can reduce energy consumption and extend the battery life of devices, enabling low-power wireless communication.
What are the advantages of dual-band routers?
Compared with single-band routers, dual-band routers have the following advantages:
Higher transmission rate: The dual-band router supports two frequency bands of 2.4GHz and 5GHz, which can avoid frequency band interference and improve the transmission rate and stability of the wireless network. Better coverage: 2.4GHz frequency band has longer transmission distance and better penetration ability, suitable for scenarios with wider coverage; 5GHz frequency band
The transmission distance is relatively short, but the transmission rate is faster, which is suitable for high-density Remote IO module and high-speed transmission scenarios. More connections: The dual-band router can support more connections at the same time. By connecting different devices to different frequency bands, the stability and reliability of the wireless network can be effectively improved. Better Compatibility: Power module The dual-band router can support devices in both 2.4GHz and 5GHz frequency bands at the same time, which has better compatibility and is suitable for different types of devices and application scenarios.
To sum up, the dual-band router has the advantages of higher transmission rate, better coverage, more connections and better compatibility, and is suitable for many different network environments and application scenarios.