A quick overview of the world's four "big cattle" solutions in the four application areas

Single chip microcomputer STM32L151CCU6

Mobile phone crystal 3.2*2.5mm 3225 26M (26.000MHZ) 7.5PF 10PPM 20PPM 30PPM

It can be said that the electronic distribution industry has reached a consensus in 30 years: we are not only selling components but also "services". For the electronics industry, the most value-added “service” is to provide a total solution from the product concept to the final product, because it can greatly reduce the customer's R&D investment and avoid the risk of uncertainty in the R&D process. Shorten the time to market and win opportunities for customers in the competition.

Shijian is a master of the "solution" in the electronic distribution industry. With years of experience in many core technologies in industrial, wireless communications and digital broadcasting, as well as extensive industry experience, Shijian can provide customers with one-stop product solutions. This outstanding "planning" capability has won the favor of customers for Shijian , making it a highly recognized technical distributor in the industry.

The ability to provide a total solution service is largely due to a layered engineering system that Shijian has polished over the years: at the front end, Shijian's Field Application Engineer (FAE) provides customers with a personal fit. Technical support services, while collecting customer needs and feedback; at the back end, the company's internal R & D engineers continue to develop and upgrade the program based on technical support. At the same time, the process of making the program is also a process of “deep processing” of the original supplier's products, which gives the original products the greatest performance advantage. Therefore, the original factory is also willing to provide more technical and resource support for Shijian. As a result, Shijian plays a relatively central role in the ecological chain connecting the original factory and the customer.

After years of accumulation and operation, Shijian's solution capabilities span multiple applications in industrial, Bluetooth, power and LED, and a series of “close-fitting and intimate” industry solutions that connect Shijian with customers. Together. Today, we may wish to talk about Shijian's ten major programs in the industrial, Bluetooth, power energy and LED fields.

Industrial field

The industrial sector is the market for Shijian's key services. Shijian provides industrial solutions that maximize chip performance while greatly simplifying the user's design process.

(1) Pi'an-level current measurement evaluation kit

The pursuit of higher measurement accuracy is the unremitting pursuit of industrial instrumentation. ADI's high-precision op amps have always been the darling of high-end industrial instrumentation, especially the newly introduced ADA4530, which enables picoampere current measurement, making it ideal for applications such as electrometers, spectrometers, and particle detectors.

However, because the ADA4530 signal is very sensitive and susceptible to external environment interference, the measurement accuracy is added, which adds challenges to the customer's design. To this end, Shijian has developed an evaluation kit that is based on the ADA4530 and is modular and covers different application scenarios to help customers evaluate the device smoothly. This kit consists of four parts, namely the current input conversion board, the voltage input buffer board, the pin conversion board compatible with AD549, and the ADC data acquisition board, which is very close to the actual circuit of the customer. The plug-in design interface allows customers to select different types of devices. At the same time, Shijian also designed the entire shield for this purpose. The customer can directly install the entire current conversion board in the shielding box, put it in his own analytical instrument, and output it to his own system through the corresponding shielded line output. Watch the effect.

This program fully demonstrates the technical strength of Shijian as a strategic partner of ADI's regional distribution channel and its keen insight into customer needs.

(2) Infrared flame detection reference scheme

In the industrial sector, fire safety is always "just needed." The three-band infrared flame detector (hereafter referred to as IR3FD) reference design developed by Shijian Company based on Pyreos' thin film pyroelectric infrared sensor covers the basic functions of the infrared flame detector, providing signal amplification from the flame sensor and on-chip ADC. Data acquisition, flexible signal output interface and graphical PC software. With this platform, customers can quickly evaluate the performance of flame sensors and hardware circuits and shorten the design cycle.

The scheme can prevent false alarms, and the response speed to infrared signals is up to the millisecond level, which can realize the axial detection distance of 65 meters and meet the stricter certification requirements of export products. At the same time, the reference design also provides a comparison channel, which can be connected to the traditional voltage mode flame sensor for performance comparison. At the same time, the upper computer evaluation software is provided for data acquisition and analysis.

(3) Smart Transmitter Reference Design

This solution uses ADI's ADuC7061 as the main MCU (ARM7TDMI core). The MCU's internal PGA is combined with the external instrumentation amplifier AD8420 and the onboard Epcos piezoresistive sensor differential voltage signal input to convert the voltage analog signal into digital, through internal linearization. The algorithm (including temperature offset correction) is converted to the corresponding 4-20 mA output for accurate pressure measurement. The entire solution enables two-wire loop power through a low-power and efficient power supply design. The digital interface is connected with the PC by RS232. With the debugging software of the PC, the transmitter is debugged and parameterized before leaving the factory, which makes the use easier and faster.

The reference design features outstanding features: high performance and easy secondary development; convenient for customers to develop the required low temperature drift, high precision products in the shortest cycle, can be widely used in petroleum, chemical, metallurgy, medical, environmental Control, industrial field.

Bluetooth field

Shijian has been involved in the development of Bluetooth solutions since 2002. There is a deep technical accumulation in this field, and a series of Bluetooth solutions have been developed for different application scenarios. Here are two more popular options in the near future.

(1) TWS headset solution

Nowadays, users' ears are becoming more and more "choosy", so the true wireless stereo (TWS, TrueWirelessStereo) Bluetooth headset has become the new favorite. The principle is that the mobile phone is connected to the main earphone through Bluetooth, and then connected to the slave earphone through the Bluetooth wireless mode from the main earphone, realizing true wireless left and right channel wireless separation, no delay, good sound quality.

Shijian's TWS Bluetooth headset solution is based on the low-power Bluetooth CSR8670 chip, using Qualcomm's unique TWS technology to achieve true stereo transmission of the left and right headphones, using Qualcomm's unique CVC noise reduction to achieve high-quality call quality, while also adopting Qualcomm's unique Aptx decoding technology, plus an independent touch function, can achieve up and down song switching and playback pause. This will undoubtedly help customers quickly develop their own TWS Bluetooth headset products for market nuggets.

(2) Bluetooth speaker solution

Bluetooth technology frees the connection of audio equipment from the "line". Based on Qualcomm867x Bluetooth wireless speaker solution, music sharing can be done through TWS or broadcast mode, OTA upgrade through BLE or SPP, communication with mobile application via BLE, SPP, iAP1/iAP2 protocol and audio device controlled by mobile APP. A2DP, AVRCP, HFP, HSP, SPP, BLE, etc. The Bluetooth speaker solution can be widely used in portable speakers, music speakers, sound bars, wireless subwoofers, car audio and so on.

Power field

The global energy landscape is changing. The use of smart grids, the use of new energy sources, and advanced technologies, automation, energy storage, and dispatching technologies make energy systems more environmentally friendly, efficient, and reliable. In this trend of energy Internet applications, Shijian can be described as "severe participation."

(1) Ultrasonic water meter reference design

Shijian's self-developed design solution - ultrasonic water meter with TDC-GP30 (ams new generation ultrasonic flow converter) and S1C17W15 (EPSON 16-bit ultra-low power MCU) as the core, including LCD display, EEPROM, low power consumption LDO (MICCIC's MCP1700, quiescent current is only 1.6uA), and isolated RS485 communication module and other peripheral circuits, BOURNS TBU and TVS are used as protection devices in RS485 circuits and power supply modules. In addition to accumulating and preserving the forward and reverse water volumes, the meter also displays instantaneous flow, water temperature, and speed of sound. Data such as volume and flow can be read via the RS485 interface, and the communication protocol is DL/T645.

Shijian's solution design and integration capabilities are reflected in this reference design.

Shijian's solution design and integration capabilities are reflected in this reference design.

(2) Power quality online monitoring device solution

Shijian's power quality online monitoring device is designed according to the relevant standards of GB17626.30-2012 (IEC61000-4-30-2008) and the relevant specifications of the State Grid and China Southern Power Grid Corporation. The design is mainly applicable to the power supply system of large-scale factories and mines of power plants, substations, wind farms, photovoltaic power plants, petroleum, coal, steel, metallurgy, chemical industry, etc. of various voltage levels of 380V-220kV and real-time monitoring of power quality parameters of public connection points. The device has a wealth of features, including: comprehensive basic monitoring functions, graphical human-machine interface functions, statistical functions, GPS timing functions, recording functions, advanced monitoring indicators, record storage functions, communication functions, alarm functions.

The solution uses the processor (ADSP-BF607) + AD7606 architecture to achieve online power quality monitoring. The ADSP-BF607 is a high-performance symmetric dual-core DSP processor in the Blackfin series. The maximum operating frequency of a single core is up to 500MHz. BF607Core1 is responsible for the reading and algorithm processing of 8-channel ADC data. The single-cycle sampling point per channel is 512 points; core0 is equipped with uCLinux system, which is responsible for communication protocol and human-machine interface processing; one AD7606 is responsible for completing 4-channel voltage signal and 4-channel current. The signal is sampled with a sampling resolution of 16 bits and the sampling frequency is synchronized with the grid frequency. In EMC protection, the power port protection adopts the PTVS and PPTC of Bourns Company of the United States to protect the reliable operation of the board. This solution provides a turnkeysolution (total solution) collaboration model that shortens the time customers enter the handheld power quality inspection equipment market.

[PQAARM board]

[PQADSP board]

The solution provides customized design requirements and has been successfully applied to many different engineering projects in China Southern Power Grid.

(3) Based on ADSP-CM408F distribution network automation solution

According to the plan of the State Grid Corporation, by 2020, China will fully realize the 90% target of distribution network automation. In order to facilitate users to design and evaluate the application of ADSP-CM40X core processor-based medium and low voltage power protection device, DTU/FTU, power quality analysis device, distribution transformer area monitoring, etc., Shijian developed this distribution network. Automation solution.

The solution uses a distribution network automation minimum system: three-way current transformer, three-way voltage transformer and one zero-sequence transformer analog input configuration. The transformer output is the +/-10V signal commonly used in power systems. The solution adopts AD8604 for signal conditioning, which satisfies the requirements of ADSP-CM408F internal ADC input 0 to 2.5V; the internal two-channel independent SARADC ensures synchronous sampling of voltage and current channels; the high-performance ARMCortexM4 core processor can meet the user's related protection and Measurement algorithm design and development; open RS485/232, CAN, SPI, I2C, USB and other interfaces for user data interaction and transmission, SINC filter input interface for users to connect AD740X series ADC signal input, expand the required DC signal input The ADSP-CM408F has a built-in harmonic analysis engine (HAE) that can perform up to 56 harmonic analysis of the original sampled voltage and current (based on 50Hz fundamental). The result of HAE can be sent to the host computer via USB or RS232 interface. View the interface.

[Baseboard + transformer board based on ADSP-CM408F distribution network automation solution]

The program has been adopted by many domestic users for secondary development, and is actually used in many actual project projects of the State Grid and China Southern Power Grid Corporation.

LED field

Based on Seoul Semiconductor's products, the world's four largest LED manufacturers, Shijian has developed a range of LED lighting solutions for indoor and outdoor applications covering the entire spectrum of LED applications.

Product line application

High-power series of mining lamps, flashlights, street lamps

AC series mining lamp, ceiling lamp, fan lamp, downlight

COB series spotlights, downlights

Medium power series A60 bulb, MR16 bulb, ceiling lamp, bulb, tube

MJT series street lights, patio lights, advertising casts, etc., G9 bulbs

AC solution application

Outdoor street light, patio light

Indoor downlights, cabinet lights

Conclusion:

Solution capability is the embodiment of the comprehensive strength of technical distributors. In this respect, World Health is undoubtedly successful. With this hard power, regardless of how the market changes, Shijian can quickly integrate technical resources to provide customers with a satisfactory one-stop solution service.

About Shijian - Asia Pacific Leading Component Authorized Distributor

Shijian is a complete solution provider of quality components, engineering and supply chains for Asian electronics manufacturers including Original Equipment Manufacturers (OEMs), Original Design Manufacturers (ODMs) and Electronic Manufacturing Service Providers (EMS). Management services.

Shijian works closely with suppliers and electronics manufacturers to position new technologies and trends and help customers incorporate these state-of-the-art technologies into their products. The Group has three R&D centers, and the professional R&D team is constantly creating new solutions to help customers improve cost-effectiveness and shorten time-to-market. The innovative solutions developed by Shijian can be applied in the fields of industry, wireless communication and consumer electronics.

Headquartered in Singapore, Shijian is a Singapore-listed company with more than 650 employees and expanded its business to more than 40 cities and regions in the Asia Pacific region, including Singapore, Malaysia, Thailand, Vietnam, China, India, Indonesia. Countries such as the Philippines, New Zealand and Australia. Shijian Group's annual turnover in 2016 exceeded US$980 million. Shijian began to develop its business in China in 1993. The headquarters in China is located in Hong Kong and has 11 branches and offices, 2 R&D centers and 2 logistics centers in various cities in China.