In recent years, the UDI (Unique Device Identification) system has been used internationally to give identification to medical devices, enabling them to have a unique "identity card" in the product supply chain to help simplify the tracking and recall of medical supplies. RFID electronic tags can track and record the entire life cycle of medical equipment produced. The RFID passive electronic tag chip has an anti-collision mechanism and can be applied to the application of multi-tag identification; due to the special tag design, the tag can be identified and read in all directions, with fast reading speed and high accuracy.
RFID smart healthcare uses the Internet of Things technology to realize the interaction between patients and medical staff, medical institutions, and medical equipment. RFID automatic identification technology can quickly read in batches, store a large amount of information, has the advantages of high security, unique identity, and non-copyability. It can identify medical supplies and efficiently track the production, transportation, storage, and clinical use of medical supplies. The information status can be traced throughout the entire process, avoiding public medical safety issues, and playing an important role in the construction of smart medical care.
The high-frequency inverter power supply converts the original low-voltage direct current into low-voltage high-frequency alternating current through DC/DC high-frequency conversion technology, then boosts the voltage through a transformer, and then rectifies the high-frequency rectified and filtered current into high-voltage direct current with an average value of more than 300V v. Because the high-frequency magnetic core material of the high-frequency sine wave inverter is small in volume and light in weight, the power density of the circuit can be greatly improved, the no-load loss of the sine wave inverter is reduced to be very low, and meanwhile, the conversion efficiency of the sine wave inverter is improved. The peak conversion efficiency of small and medium-sized high-frequency sine wave inverters can reach more than 90%
Power frequency sine wave inverter：
Sine Wave Inverter, Solar Inverter, MPPT Controller, Inverter Power Frequency Inverter Power Supply is used by converting DC direct current into low-frequency AC alternating current and boosting it to 220V mains supply through a transformer. The structure of power frequency sine wave inverter is relatively simple, and various protection functions can be realized in low voltage working environment. In the circuit using the power frequency sine wave inverter, the power supply is stable in operation, strong in anti-interference performance and good in overload capacity, so it is relatively reliable and can suppress higher harmonic components. However, its size is relatively large, its price is relatively high, and its relative power is also very low. According to the current manufacturing process, the rated load efficiency of the sine wave inverter is not more than 90%, so under the condition of no load, its loss is large and its efficiency is low.
The above is a summary of the differences between high frequency and power frequency sine wave inverters. It can be seen that at present, high frequency sine wave inverters has more market value.
The main function of MPPT controller is to detect the DC voltage and output current of the main circuit, calculate the output power of the solar array, and track the maximum power point. The disturbance resistor R is connected in series with the MOSFET. Under the condition that the output voltage is basically stable, the average current through the resistor is changed by changing the duty ratio of the MOSFET, thus causing current disturbance. At the same time, the output current and voltage of the photovoltaic cell will also change accordingly. The change of the output power and voltage of the photovoltaic cell before and after the disturbance is measured to determine the disturbance direction of the next cycle. When the disturbance direction is correct, the output power of the solar photovoltaic panel will increase, and the next cycle will continue to disturb in the same direction. Otherwise, it will disturb in the opposite direction. In this way, the disturbance and observation will be repeated to make the solar photovoltaic panel output reach the maximum power point.
With the progress of society and the improvement of productivity, the demand for energy is increasing with the development of human beings. The demand for electric power is expected to increase every year. At present, China's power source mainly relies on fire and thermal power generation. Clean solar power generation has gradually prevailed in recent years. The products related to solar power generation system are also numerous and varied in quality. Take inverter and controller products as an example. Many friends who have just entered the industry do not know much about it, which leads to ambiguity in product selection.
For example, a customer asked whether it is necessary to purchase a controller when purchasing off-grid inverter. AnHui JNGE INVERTER manufacturer is popular here:
Firstly, the inverter function is simple and clear, that is, to convert 12V/24V/48V/72V direct current (storage battery, storage battery, direct current power supply) into 110V/ 220V/380V alternating current commonly used in household and the controller is used when charging the battery with photovoltaic modules, which can maintain a stable charging process, avoid the battery from being damaged by overshoot and reverse current damage to the photovoltaic modules caused by reverse current flowing out of the battery. Therefore, the full name of the controller is also called solar charging and discharging controller, which is divided into MPPT type solar control and PWM type solar controller. Everyone should pay attention to the specific use requirements and the configuration of photovoltaic modules when selecting, and select the appropriate inverter or controller.
One, Complete models. Brand models of solar high-power inverters are very complete, especially some big brands will introduce new products every year, in order to enable their brands to occupy the market advantage, and the practicability of high-quality equipment will certainly be stronger. Moreover, the models of major brands are very complete. We need inverters of any style, which can be purchased directly without worrying about shortage.
Second, the quality is guaranteed. To be able to set up a big brand, naturally, has also passed the corresponding national audit, and many businesses are also strictly controlled, only in this way can our brand go further and have greater influence. The quality of branded solar high-power inverters is strictly controlled. Only products with excellent quality can be sold to the market. As long as we can purchase them through formal channels, they can be guaranteed.
Third, the price is more reasonable. In fact, the price of branded solar high-power inverters should be more reasonable, after all, the production methods and costs of such products are close to each other, and the market prices cannot be too different. Compared with other types of products in the market, the brand inverter is more cost-effective. The brand will provide us with high-quality after-sales service and cooperate with such brand merchants. Of course, there is no need for us to worry about any problems.
ANHUI JNGE Focus on solar equipment R&D for 15 years, learn more www.HFJNGE.com
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Diaphragm pump, also known as a Membrane pump, is mainly composed of motor, transmission components, flexible diaphragm, and check valves. It utilizes a flexible diaphragm that reciprocates back and forth, creating a temporary chamber, which both draws in and expels fluid through the pump. When the volume of a chamber of pump is increased, the pressure decreases, and fluid is drawn into the chamber. When the chamber pressure later increases from decreased volume, the fluid previously drawn in is forced out. Finally, the diaphragm moving up once again draws fluid into the chamber, completing the cycle.
AJK produces complete lines of mini diaphragm pumps for more than 15 years, like AJK-B1201, AJK-B2701, AJK-B3601, etc. Please feel free to contact us if any requirements on the mini diaphragm pumps, thanks
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The Touch Screen Smart POS Android Device has supported amazing features.
1) Supports cloud printing, internal bluetooth printing, clipboard printing.
2) Admin control - password protected for installing & uninstalling Apps, calling & message, etc
3) Free apps available. e.g. car parking management, mobile payment, web browser (printing web pages), restaurant online food delivery, bus ticketing, etc.
And my team has developed free plugins for resataurant online food delivery for Android POS Terminal.
1) Free Plugin for woocommerce, which allows sending order from server to the pos, and receiving confirmation & updating the order status.
2) POP3/IMAP html email printing.
3) DIY logo for printout and app screen easily.
Modern warehousing and logistics distribution have become more diversified and demanding. Not only must we implement the storage management of goods, but we must also mark the types, quantities, attributes, etc. of goods in the warehouse one by one. Especially in the management of military supplies, high standards and strict requirements are even more needed. RFID technology relies on many characteristics and has been maturely applied in various fields to efficiently improve internal inventory, warehouse positioning, and distribution security control management.
The army material RFID management system is an Internet of Things solution for military weapons, firearms, combat readiness, and other types of material management. Among them, RFID access control system, material management system, alarm system and other systems are combined into one, which not only manages combat preparation materials, but also realizes management of other property materials in the army, personnel authority management, material life cycle management, and maintenance. Reminders and other functions provide favorable guarantees for the management of many materials in the army.
Deploy and install RFID access control systems in the warehouse of combat readiness materials or training materials, and install RFID access doors or RFID reader devices in the warehouses to identify the access to the access channels. First, you need to apply in advance to the reserve materials administrator (the reserve materials administrator only has access to the access control system). All combat materials are equipped with unique electronic ID RFID tags, and the information about the combat materials corresponding to the tags is recorded in the system. At the same time, each person who enters the warehouse to extract strategic materials is equipped with an RFID card with its identity information. After the materials are extracted and passed through the RFID access door, the personnel information and the material information raised by the person will be obtained. Relevant records of personnel information, the system will prompt the successful borrowing of the material. When returning the materials, the system will also record the relevant information of the personnel and materials when passing through the RFID access door to ensure that the materials can be put into the warehouse in time. The material management personnel will use the RFID handheld terminal device. Inventory inspection of the material situation, the inspection situation information is recorded in the system to facilitate the daily maintenance and management of materials.
Intelligent warehouse management with RFID technology can enhance the accuracy and speed of warehouse operations. Reducing the loss of individual assets due to inadequate management in the inflow and outflow of combat readiness materials, laying a foundation for ensuring the security of combat readiness materials. Improve the management and service level of the combat readiness warehouse, and provide favorable guarantees for the work of the army's logistics department, equipment department, and training department. RFID technology combined with network technology to build military asset management to achieve modernization and informationization, and provide intelligent security management for combat readiness and storage.
UHF RFID electronic tags usually refer to electronic tags that conform to the ISO18000-6C & EPC C1G2 protocol. Of course, there are also electronic tags of the ISO18000-6B protocol, but the ISO18000-6B protocol is gradually marginalized.
First, what needs to be considered is the storage structure of UHF electronic tags?
1. What is the model of the chip?
2. What is the memory map of the chip in the chip's specification?
Generally, the electronic label of the 6C protocol is divided into a TID area, an EPC area, a user area, and a reserved area. The TID is the serial number of the solidified chip and cannot be changed. The EPC area is the most frequently used and written area. Some tags have a user area, and some tags, except for the user area, are usually reserved for storing access passwords.
What kind of data do we need to store in UHF RFID electronic tags? Does the data need to be encrypted?
A typical case is the coding method used in the RFID clothing industry.
96 bit EPC, can store 24 HEX in total, how to allocate these 24 HEX is more important, the following figure clearly lists the storage type of a certain garment,
1- 14 for the product UPC
15-19 digits for clothing information such as style, color, size
20--24 digits are the serial number
Access password and inactivation killing password, add according to your own needs, but you need to pay attention to whether the chip itself can perform password operations
Finally, prepare the UHF RFID reader for batch writing.
Indian company Agra Nagar Nigam has decided to simplify solid waste management by installing RFID tags, which are installed in 99,450 houses in 51 communities and handing over 350 RFID handheld readers to cleaners.
Homeowners must put dry garbage and wet garbage in different bins and pay a Rs 65 management fee each month.
When the cleaner collects garbage from the house and scans the RFID tag installed in the house, it will automatically signal to the command and control center of the Agra Smart City Office. After collecting garbage, the homeowner will receive a text message from the mobile phone.
If cleaners do not collect garbage at home, homeowners can also complain through mobile apps.
Homeowners must keep the RFID tags intact. If there is a problem with the label, the homeowner will pay a fine of Rs 100 for this.
The collected garbage will be sent to six collection centers located at different locations in the city. The dry waste is then sent to the processing plant and the wet waste is sent to the composting plant.