Abstract: When our engineers and designers designed IoT-related products, some of the instruments that we were familiar with and used, such as ordinary oscilloscopes, digital signal generators, function generators, multimeters, etc., were basically low-frequency and time-domain. The instrument is difficult to play in the face of hundreds to thousands of megahertz high-frequency microwave radio signals.
Recently, the Ministry of Industry and Information Technology released the Twelfth Five-Year Plan of the Internet of Things, which indicates that the Internet of Things technology will be rapidly developed as an emerging strategic industry; among the key technologies involved in the Internet of Things, wireless technology is one of the very important technical areas, whether it is Layers of communication between various sensors and communication or network gateways, and communication between routers involve various aspects of various wireless communication technologies.
We know that the wireless technology used in the Internet of Things involves very high communication frequencies and a relatively wide spectrum range. For example, standardized wireless devices and technologies running on 2.4 GHz (such as Bluetooth 4.0, ZigBeePRO, and WiFi), this frequency is almost convenient Used anywhere in the world. However, in order to improve building penetration and transmission distance, reduce various types of interference, and reduce power consumption in wireless communication, design and development engineers may consider using other frequency bands specified by countries (for example, 900 MHz, 779 MHz, 433 MHz, 315 MHz, etc.).
When our engineers and designers designed IoT-related products, some of the instruments that we were familiar with and used, such as ordinary oscilloscopes, digital signal generators, function generators, multimeters, etc., were basically low-frequency and time-domain instruments. In the face of several hundred to several megabits of high-frequency microwave radio frequency signals, it is difficult to play a role, need to use high-frequency and frequency domain advanced equipment, such as RF spectrum analyzer, RF signal generator, RF network analyzer, etc. These instruments are currently on the market, but the common features are very expensive, often tens of thousands each, even up to several hundred thousand dollars each.
On the other hand, the Internet of Things technology, in addition to the relatively high frequency and relatively wide spectrum range, also involves a variety of different communication protocol stacks, (including ZIGBEE, IEEE802.15.4, Bluetooth, WIFI and other different communication protocols) These protocol stacks are implemented by software according to different communication standards, and finally achieve communication between different network nodes, routers, and gateways. For wireless communication, a large amount of communication data is transmitted in the air with different data packets. This requires a special high-frequency instrument to collect and analyze these transmissions in the air, but we cannot see or touch data packets. In order to effectively verify and debug the communication protocol, the development efficiency of the software protocol stack is improved.
There are also battery nodes, etc., of the Internet of Things that all need to work under a small battery for a long time. It is also important to measure and monitor these micro-power states because these nodes usually save power. All of them are in a momentary working state. Therefore, measuring the long period, instantaneous power consumption, and automatic record analysis of these nodes has also become a complicated task that requires special instruments to bear.
Formally based on the actual needs of IoT product design and technology development, a new type of RF instrument emerged. This is the IOTA-1100 series IoT comprehensive tester designed by Wireless Dragon Technology Group. The instrument is in one instrument. At the same time, the above four requirements are fulfilled. In the following, we briefly introduce the simple and practical application of this new type of instrument.
First, the air protocol analyzer function The air protocol analyzer is an advanced digital analysis and detection equipment that can collect and analyze the data packets of different IoT and sensor network communication protocols transmitted over the air, which conforms to the IEEE 802.15.4 standard. The acquisition and analysis of the Internet of Things sensor network network is a basic configuration function of the air protocol analyzer of the comprehensive analyzer of the Internet of Things; for the collection and analysis of other communication standards, different protocol expansion modules can be used to implement.
Figure 1 is a sample collection of two different ZIGBEE sensor nodes. We use this template to see how to use the basic features of the air protocol analyzer.
First, we chose to enter the air protocol analysis function (IEEE 802.15.4 protocol analyzer function) on the integrated analyzer of the Internet of Things. See the multi-window screen that appears on the screen. Each window has various functions such as collection of data packages in the air, display of time-of-flight packages, analysis of package contents, and network topology display.
Start the analyzer automatically collect the command, the analyzer will automatically acquire the RF circuit and antenna through the internal 2.4GHZ wireless multi-channel 2.4GHZ, implement multi-channel automatic scanning, if you find the data package in line with the ZIGBEE standard, it will automatically complete the air packaging Collect and automatically store and display this data.
Figure 1 shows two ZIGBEE networks. One is a ZIGBEE network consisting of battery-powered micromodules. It consists of four modules, including gateways, routers, and nodes (blue), and the other is a ZIGBEE consisting of five energy harvesting modules. Micro-sensor network (green), through the analyzer's internal high-speed embedded computer's automatic collection and packaging and analysis and other complex algorithms, in the network topology window, we can observe in real time the operation status and topology of these two independent networks. The network consists of a coordinator, two routers, and one terminal node to form a mesh network; another energy collection network (green) consists of a coordinator, two routers, and two terminal nodes to form an independent batteryless wireless sensor network.
In the packaging collection window, we can learn more about the internal information of each data package format, add network self-organized information such as network and network routing, understand network traffic and busy conditions, network reliability and health status, and achieve more Transparent monitoring and real-time analysis of wireless sensor networks with independent RF channels.
Second, RF amplifier circuit testing and analysis In order to enhance the coverage of the Internet of things, the sensing layer, we often need to add a variety of RF amplifiers for the wireless sensor system-on-chip (SoC), because these amplifiers work in the microwave from 315MHZ to 2.4GHZ RF frequency bands, testing and analysis require the use of expensive RF spectrum analyzers. To facilitate engineers' use of low-cost test development tools, the IoT analyzers are equipped with different spectrum analyzer modules for engineers to use. Because it is a function to use the embedded computer and color LCD display and touch screen inside the Internet of Things analyzer, the overall cost of the instrument is not very high.
The IoT analyzer has two standard 50 ohm RF plugs that can achieve RF signal output and input. The built-in software can achieve up to 2.45 GHz RF spectrum analyzer and RF signal generator function (up to 5.8 using optional function modules GHZ).
There are two circuit boards (green and blue) of the wireless network module of the sensor network in Fig. 2. In actual test, only one of the boards can be connected and actually tested and debugged.
First, we test the transmit amplifier (green circuit board in Figure 2). This is usually a power amplifier. We connect the analyzer RF output cable to the input of the green circuit board (disconnect the wireless transceiver output) and adjust the output signal to us. The required frequency (300MHZ, 433MHZ, 900MHZ, 2.45GHZ, etc.), connect the output (antenna) to the analyzer receiving cable, set the analyzer to receive spectrum, and we can observe the RF spectrum signal on the analyzer. You can use waveform display or density display at the same time. There are also advanced numerical functions such as maximum spectrum trajectory, average spectrum trajectory, etc.; through RF signal generator and spectrum analyzer, we can test various RF parameters of the power generator. Output impedance, power, noise, etc., adjusted to complete a high-quality power amplifier debugging and testing process;
For the testing and debugging of the low noise amplifier test and debugging (Figure 2 blue board), it is only necessary to separately connect the analyzer input and output terminals for different RF connections. It is also easy to easily test the difficult RF sensor module such as a low noise amplifier. Commissioning work.
Third, other functions and extended function modules IOTA-1100 IoT analyzer also has a micro-power analyzer function, and as a standard configuration, can achieve continuous recording and power consumption of sensor nodes in different states of instantaneous power, average current, maximum Current and other parameters are automatically tested.
At the same time, a series of new function selection modules will be added to the selected configuration of the instrument. The selected configuration will include HF and UHF RFID analysis function modules, 5.8GHZ spectrum analyzer function modules and signal transmission function modules, RF network analyzer function modules, RF4CE, and Bluetooth. 4.0 and Bluetooth micro power consumption, 3G/4G radio frequency telecommunication network and other modules, etc.
IV. Summary The development of IoT technology will inevitably require supporting measurement instruments, analytical instruments and design tools. The emergence of such devices as the IoT analyzer will accelerate the popularization of radio frequency microwave technology and facilitate technical development personnel to accelerate product design and speed up The pace of product launch can also help companies shorten the development cycle of IoT product design and provide more design tools and instrument choices for technology developers and engineers.
It is believed that the development of these new instruments and various new design tools will help the Internet of Things industry to grow more rapidly.
Recently, the Ministry of Industry and Information Technology released the Twelfth Five-Year Plan of the Internet of Things, which indicates that the Internet of Things technology will be rapidly developed as an emerging strategic industry; among the key technologies involved in the Internet of Things, wireless technology is one of the very important technical areas, whether it is Layers of communication between various sensors and communication or network gateways, and communication between routers involve various aspects of various wireless communication technologies.
We know that the wireless technology used in the Internet of Things involves very high communication frequencies and a relatively wide spectrum range. For example, standardized wireless devices and technologies running on 2.4 GHz (such as Bluetooth 4.0, ZigBeePRO, and WiFi), this frequency is almost convenient Used anywhere in the world. However, in order to improve building penetration and transmission distance, reduce various types of interference, and reduce power consumption in wireless communication, design and development engineers may consider using other frequency bands specified by countries (for example, 900 MHz, 779 MHz, 433 MHz, 315 MHz, etc.).
When our engineers and designers designed IoT-related products, some of the instruments that we were familiar with and used, such as ordinary oscilloscopes, digital signal generators, function generators, multimeters, etc., were basically low-frequency and time-domain instruments. In the face of several hundred to several megabits of high-frequency microwave radio frequency signals, it is difficult to play a role, need to use high-frequency and frequency domain advanced equipment, such as RF spectrum analyzer, RF signal generator, RF network analyzer, etc. These instruments are currently on the market, but the common features are very expensive, often tens of thousands each, even up to several hundred thousand dollars each.
On the other hand, the Internet of Things technology, in addition to the relatively high frequency and relatively wide spectrum range, also involves a variety of different communication protocol stacks, (including ZIGBEE, IEEE802.15.4, Bluetooth, WIFI and other different communication protocols) These protocol stacks are implemented by software according to different communication standards, and finally achieve communication between different network nodes, routers, and gateways. For wireless communication, a large amount of communication data is transmitted in the air with different data packets. This requires a special high-frequency instrument to collect and analyze these transmissions in the air, but we cannot see or touch data packets. In order to effectively verify and debug the communication protocol, the development efficiency of the software protocol stack is improved.
There are also battery nodes, etc., of the Internet of Things that all need to work under a small battery for a long time. It is also important to measure and monitor these micro-power states because these nodes usually save power. All of them are in a momentary working state. Therefore, measuring the long period, instantaneous power consumption, and automatic record analysis of these nodes has also become a complicated task that requires special instruments to bear.
Formally based on the actual needs of IoT product design and technology development, a new type of RF instrument emerged. This is the IOTA-1100 series IoT comprehensive tester designed by Wireless Dragon Technology Group. The instrument is in one instrument. At the same time, the above four requirements are fulfilled. In the following, we briefly introduce the simple and practical application of this new type of instrument.
First, the air protocol analyzer function The air protocol analyzer is an advanced digital analysis and detection equipment that can collect and analyze the data packets of different IoT and sensor network communication protocols transmitted over the air, which conforms to the IEEE 802.15.4 standard. The acquisition and analysis of the Internet of Things sensor network network is a basic configuration function of the air protocol analyzer of the comprehensive analyzer of the Internet of Things; for the collection and analysis of other communication standards, different protocol expansion modules can be used to implement.
Figure 1 is a sample collection of two different ZIGBEE sensor nodes. We use this template to see how to use the basic features of the air protocol analyzer.
First, we chose to enter the air protocol analysis function (IEEE 802.15.4 protocol analyzer function) on the integrated analyzer of the Internet of Things. See the multi-window screen that appears on the screen. Each window has various functions such as collection of data packages in the air, display of time-of-flight packages, analysis of package contents, and network topology display.
Start the analyzer automatically collect the command, the analyzer will automatically acquire the RF circuit and antenna through the internal 2.4GHZ wireless multi-channel 2.4GHZ, implement multi-channel automatic scanning, if you find the data package in line with the ZIGBEE standard, it will automatically complete the air packaging Collect and automatically store and display this data.
Figure 1 shows two ZIGBEE networks. One is a ZIGBEE network consisting of battery-powered micromodules. It consists of four modules, including gateways, routers, and nodes (blue), and the other is a ZIGBEE consisting of five energy harvesting modules. Micro-sensor network (green), through the analyzer's internal high-speed embedded computer's automatic collection and packaging and analysis and other complex algorithms, in the network topology window, we can observe in real time the operation status and topology of these two independent networks. The network consists of a coordinator, two routers, and one terminal node to form a mesh network; another energy collection network (green) consists of a coordinator, two routers, and two terminal nodes to form an independent batteryless wireless sensor network.
In the packaging collection window, we can learn more about the internal information of each data package format, add network self-organized information such as network and network routing, understand network traffic and busy conditions, network reliability and health status, and achieve more Transparent monitoring and real-time analysis of wireless sensor networks with independent RF channels.
Figure 1: Demonstration of air protocol acquisition and analysis for two separate ZIGBEE sensor networks.
Second, RF amplifier circuit testing and analysis In order to enhance the coverage of the Internet of things, the sensing layer, we often need to add a variety of RF amplifiers for the wireless sensor system-on-chip (SoC), because these amplifiers work in the microwave from 315MHZ to 2.4GHZ RF frequency bands, testing and analysis require the use of expensive RF spectrum analyzers. To facilitate engineers' use of low-cost test development tools, the IoT analyzers are equipped with different spectrum analyzer modules for engineers to use. Because it is a function to use the embedded computer and color LCD display and touch screen inside the Internet of Things analyzer, the overall cost of the instrument is not very high.
The IoT analyzer has two standard 50 ohm RF plugs that can achieve RF signal output and input. The built-in software can achieve up to 2.45 GHz RF spectrum analyzer and RF signal generator function (up to 5.8 using optional function modules GHZ).
Figure 2: Radio frequency amplifier test development configuration diagram.
There are two circuit boards (green and blue) of the wireless network module of the sensor network in Fig. 2. In actual test, only one of the boards can be connected and actually tested and debugged.
First, we test the transmit amplifier (green circuit board in Figure 2). This is usually a power amplifier. We connect the analyzer RF output cable to the input of the green circuit board (disconnect the wireless transceiver output) and adjust the output signal to us. The required frequency (300MHZ, 433MHZ, 900MHZ, 2.45GHZ, etc.), connect the output (antenna) to the analyzer receiving cable, set the analyzer to receive spectrum, and we can observe the RF spectrum signal on the analyzer. You can use waveform display or density display at the same time. There are also advanced numerical functions such as maximum spectrum trajectory, average spectrum trajectory, etc.; through RF signal generator and spectrum analyzer, we can test various RF parameters of the power generator. Output impedance, power, noise, etc., adjusted to complete a high-quality power amplifier debugging and testing process;
For the testing and debugging of the low noise amplifier test and debugging (Figure 2 blue board), it is only necessary to separately connect the analyzer input and output terminals for different RF connections. It is also easy to easily test the difficult RF sensor module such as a low noise amplifier. Commissioning work.
Third, other functions and extended function modules IOTA-1100 IoT analyzer also has a micro-power analyzer function, and as a standard configuration, can achieve continuous recording and power consumption of sensor nodes in different states of instantaneous power, average current, maximum Current and other parameters are automatically tested.
At the same time, a series of new function selection modules will be added to the selected configuration of the instrument. The selected configuration will include HF and UHF RFID analysis function modules, 5.8GHZ spectrum analyzer function modules and signal transmission function modules, RF network analyzer function modules, RF4CE, and Bluetooth. 4.0 and Bluetooth micro power consumption, 3G/4G radio frequency telecommunication network and other modules, etc.
IV. Summary The development of IoT technology will inevitably require supporting measurement instruments, analytical instruments and design tools. The emergence of such devices as the IoT analyzer will accelerate the popularization of radio frequency microwave technology and facilitate technical development personnel to accelerate product design and speed up The pace of product launch can also help companies shorten the development cycle of IoT product design and provide more design tools and instrument choices for technology developers and engineers.
It is believed that the development of these new instruments and various new design tools will help the Internet of Things industry to grow more rapidly.
Large Package Two-For-One Twister
CY250B Large Package Two-for-one Twisters
Features:
1, single spindle income side, the yarn and under are free yarn;
2, can save other small twister need into trouble Cheese processing, reduce the process to improve efficiency and quality;
3, from the style manual spindle brake system, the operation easier, while extending the life of belt and spindle;
4, reasonable design the front of the convenience transform and dragon with elastic adjustment twist;
5, the use of intelligent control systems to regulate digital intelligent twist, spindle speed, feed rate over.
Applied range:
45-100D kinds of single or multiplied yarns can be twisted(such as DTY, POY, HOY, FDY, viscose rayon and so on).
Technical Parameter:
Form of operation
Double sides and single l ayer, thread manually
Number of spindle
10n,100 spindles are standard
Spindle pitch
366mm
Spindle speed range
2500-10000r/min
Twist range
65-3000T/M
Twist direction
S or Z
Spindle tensioner
Ball type
Traverse
240mm-270mm
Rated power
15KW
Start-up mode
Frequency converter start-up slowly
Take-up angle
0-30°
Take-up speed
Max 120m/min
Take-up package
Max 5kg
Spindle drive
Apron belt circulation drive
Large Package Two-for-one Twisting Machine
Large Package Two-For-One Twisting Machine,Two-For-One Twister,Straight Twisting Machine,Large Roll Loading Machine
ZHEJIANG KAICHENG TEXTILE MACHINERY CO.,LTD , http://www.kaichengtex.com