為降低成本和解決現(xiàn)有膜片鉗放大器系統(tǒng)中PC機的干擾問題，研究了一種基于單片機的膜片鉗放大器小系統(tǒng)。該系統(tǒng)采用ADI公司生產(chǎn)的ADuC841作為控制核心，并且配置相應(yīng)的液晶顯示模塊LCM3202401。模擬電路部分采用高輸入阻抗的AD8627實現(xiàn)微電流信號的采集，并由后級電路進行信號的放大和電阻電容的補償。它具有硬件電路簡單、體積小、使用方便的特點。既可以單獨作為小系統(tǒng)實現(xiàn)采集和顯示，也可以通過紅外方式和PC機進行通訊，在PC機上進行信號的處理。 Abstract: In order to reduce cost and resolve the interferential problem with PC in existing patch clamp amplifiers, a small patch clamp amplifier system design based on microcontroller is studied. It adopts a new high performance microconverter ADuC841 by the ADI as the control core in the system, configuring a liquid crystal module LCM3202401. In the analog circuit, AD8627 with high input impedance is used to detect the low current，signal magnification, as well as resistance and capacitance compensation are accomplished by subsequent circuits. It has the advantage of simple hardware circuit design, small volume and convenient operation. It can either be used as an independent system to measure and show signal detected or transmit to PC by INFRARED ray.
上傳時間： 2013-11-06
上傳用戶：yy_cn
This application report discusses the design of non-invasive optical plethysmographyalso called as pulsoximeter using the MSP430FG437 Microcontroller (MCU). Thepulsoximeter consists of a peripheral probe combined with the MCU displaying theoxygen saturation and pulse rate on a LCD glass. The same sensor is used for bothheart-rate detection and pulsoximetering in this application. The probe is placed on aperipheral point of the body such as a finger tip, ear lobe or the nose. The probeincludes two light emitting diodes (LEDs), one in the visible red spectrum (660nm) andthe other in the INFRARED spectrum (940nm). The percentage of oxygen in the body isworked by measuring the intensity from each frequency of light after it transmitsthrough the body and then calculating the ratio between these two intensities.
標(biāo)簽： Pulsoximeter Single-Chip Des
上傳時間： 2013-10-27
上傳用戶：黑漆漆
Frequently, voltage reference stability and noise defi nemeasurement limits in instrumentation systems. In particular,reference noise often sets stable resolution limits.Reference voltages have decreased with the continuingdrop in system power supply voltages, making referencenoise increasingly important. The compressed signalprocessing range mandates a commensurate reductionin reference noise to maintain resolution. Noise ultimatelytranslates into quantization uncertainty in A to D converters,introducing jitter in applications such as scales, inertialnavigation systems, INFRARED thermography, DVMs andmedical imaging apparatus. A new low voltage reference,the LTC6655, has only 0.3ppm (775nV) noise at 2.5VOUT.Figure 1 lists salient specifi cations in tabular form. Accuracyand temperature coeffi cient are characteristic ofhigh grade, low voltage references. 0.1Hz to 10Hz noise,particularly noteworthy, is unequalled by any low voltageelectronic reference.
標(biāo)簽： 低噪聲 電壓基準(zhǔn) 噪聲測量
上傳時間： 2013-10-30
上傳用戶：wxhwjf
Blaster is a simple application that illustrates Windows NT 5.0’s support of the IrDA protocol. IrDA provides reliable point to point connectivity between 2 computers equipped with INFRARED
標(biāo)簽： IrDA application illustrates protocol
上傳時間： 2015-03-29
上傳用戶：Thuan
紅外線遙控器讀碼軟件，顯示紅外線波型，讀取并保存碼 IR Remote Control Unit Code Read System 產(chǎn)品詳細描述： 能夠像顯示器一樣顯示紅外線碼的波型 可以讀多達１５０種格式的紅外線碼 顯示紅外線碼的時間非常準(zhǔn)確，誤差只有幾個微秒。 具有錯誤檢測功能 保存紅外線碼功能 自動識別碼的格式 比較樣機與所寫的新軟件的遙控器碼的異同 具體情況請訪問本網(wǎng)站：http://www.crzman.com/IR_Reader.htm Display the INFRARED wave on the software like oscillograph. Can read more than 150 kinds of INFRARED code format Display the INFRARED time and the tolerance no more than many us. Have error detect function Save INFRARED code function Auto identify code s format Compare the code from sample and new Remote Control Unit code) Detail instance please visit address: http://www.crzman.com/IR_Reader.htm
上傳時間： 2015-07-03
上傳用戶：ccclll
紅外線開發(fā)資料，紅外線協(xié)議，INFRARED Data Association Serial INFRARED Physical Layer Measurement Guidelines
上傳時間： 2014-12-04
上傳用戶：jjj0202
SMSTransceiver (short message service transmitter and receiver [transceiver]) is a tool for sending and receiving SMS via a serial or INFRARED connection between PC and a mobile phone.
標(biāo)簽： SMSTransceiver transmitter transceiver receiver
上傳時間： 2014-01-04
上傳用戶：han_zh
用AVR單片機設(shè)計的MP3播放器 功能： MP3 Player IDE ATA interface FAT 32 with long file name support USB interface On board power supply (input from 7v to 20v DC) Bootloader firmware upgradeable via USB port INFRARED bi-directional interface Remote Control Back light graphic LCD worked with only 2x AA batteries In sleep mode sink less than 1uA (2.5mA in active mode) 5 buttons for easy navigation Long range (more than 20 feets)
標(biāo)簽： MP3 interface support Player
上傳時間： 2016-07-02
上傳用戶：fandeshun
This application report discusses the design of non-invasive optical plethysmography also called as pulsoximeter using the MSP430FG437 Microcontroller (MCU). The pulsoximeter consists of a peripheral probe combined with the MCU displaying the oxygen saturation and pulse rate on a LCD glass. The same sensor is used for both heart-rate detection and pulsoximetering in this application. The probe is placed on a peripheral point of the body such as a finger tip, ear lobe or the nose. The probe includes two light emitting diodes (LEDs), one in the visible red spectrum (660nm) and the other in the INFRARED spectrum (940nm). The percentage of oxygen in the body is worked by measuring the intensity from each frequency of light after it transmits through the body and then calculating the ratio between these two intensities.
標(biāo)簽： plethysmography non-invasive application discusses
上傳時間： 2014-01-17
上傳用戶：天誠24
32feet.NET is a shared-source project to make personal area networking technologies such as Bluetooth, INFRARED (IrDA) and more, easily accessible from .NET code. Supports desktop, mobile or embedded systems. 32feet.NET is free for commercial or non-commercial use. If you use the binaries you can just use the library as-is, if you make modifications to the source you need to include the 32feet.NET License.txt document and ensure the file headers are not modified/removed. The project currently consists of the following libraries:- Bluetooth IrDA Object Exchange Bluetooth support requires a device with either the Microsoft, Widcomm, BlueSoleil, or Stonestreet One Bluetopia Bluetooth stack. Requires .NET Compact Framework v3.5 or above and Windows CE.NET 4.2 or above, or .NET Framework v3.5 for desktop Windows XP, Vista, 7 and 8. A subset of functionality is available for Windows Phone 8 and Windows Embedded Handheld 8 in the InTheHand.Phone.Bluetooth.dll library.
上傳時間： 2016-07-06
上傳用戶：magister2016
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