基于P87 C591的CAN總線系統(tǒng)智能節(jié)點設(shè)計Design of CAN System Intelligent Node Based on P87C591 給出了基于帶CAN控制器的單片8位微控制器P87C591的智能節(jié)點的硬件電路及軟件結(jié)構(gòu)，詳細介紹了設(shè)計中的難點及實現(xiàn)過程中應(yīng)注意的問題。關(guān)鍵詞:CAN總線;智能節(jié)點 Abstract:A h ardc ircuita nds oftw arec onfigurationo fth ei ntelligentnode based on a microcontroller with CAN controller P87C591 arepresented.E speciallyt hec ruxi nd esigninga ndt hep roblemst hatshould be paid attention in realizing are discussed in details.Keyw ords:C AN;in telligentn ode CA N 總線 是德國Bosch從20世紀(jì)80年代初為解決現(xiàn)代汽車中眾多的控制與測試儀器之間的數(shù)據(jù)交換而開發(fā)的一種串行數(shù)據(jù)通信協(xié)議，它是一種多主總線，通信介質(zhì)可以是雙絞線、同軸電纜或光導(dǎo)纖維。由于CAN總線具有較強的糾錯能力，支持差分收發(fā)，因而適合高噪聲環(huán)境。并具有較遠的傳輸距離，適用于許多領(lǐng)域的分布式測控系統(tǒng)。目前已在工業(yè)自動化、建筑物環(huán)境控制、醫(yī)療設(shè)備等許多領(lǐng)域得到廣泛的應(yīng)用。CAN已成為國際標(biāo)準(zhǔn)化組織IS011898標(biāo)準(zhǔn)。
標(biāo)簽： P87C591 CAN 總線系統(tǒng) 智能節(jié)點
上傳時間： 2013-10-30
上傳用戶：xymbian
Preliminary User’s Manual NU85ET 32-Bit Microprocessor Core Hardware Document No. A15015EJ3V0UM00 (3rd edition) Date Published March 2002 N CP(N) Printed in Japan © 2000 NU85ET NDU85ETV14
標(biāo)簽： Microprocessor Preliminary Document Hardware
上傳時間： 2014-01-11
上傳用戶：pompey
The circuit is drawn for measurement of acceleration from –1000 mg until + 1000 mg. It can be placed in kantra n the car and be supplied from the sheath of electric lighter. The circuit includes one indicative LED and a screen LCD.
標(biāo)簽： 1000 acceleration measurement circuit
上傳時間： 2013-12-14
上傳用戶：上善若水
The code performs a number (ITERS) of iterations of the Bailey s 6-step FFT algorithm (following the ideas in the CMU Task parallel suite). 1.- Generates an input signal vector (dgen) with size n=n1xn2 stored in row major order In this code the size of the input signal is NN=NxN (n=NN, n1=n2=N) 2.- Transpose (tpose) A to have it stored in column major order 3.- Perform independent FFTs on the rows (cffts) 4.- Scale each element of the resulting array by a factor of w[n]**(p*q) 5.- Transpose (tpose) to prepair it for the next step 6.- Perform independent FFTs on the rows (cffts) 7.- Transpose the resulting matrix The code requires nested Parallelism.
標(biāo)簽： iterations performs Bailey number
上傳時間： 2014-01-05
上傳用戶：libenshu01
These Fourier routines were originally based on the Fourier routines of the same names from the NETLIB bihar and fftpack fortran libraries developed by Paul N. Swarztrauber at the National Center for Atmospheric Research in Boulder, CO USA. They have been reimplemented in C and optimized in a few ways for OggSquish.
標(biāo)簽： routines Fourier the originally
上傳時間： 2017-09-12
上傳用戶：小眼睛LSL
Computes all eigenvalues and eigenvectors of a real symmetric matrix a, ! which is of size n by n, stored in a physical np by np array. ! On output, elements of a above the diagonal are destroyed. ! d returns the eigenvalues of a in its first n elements. ! v is a matrix with the same logical and physical dimensions as a, ! whose columns contain, on output, the normalized eigenvectors of a. ! nrot returns the number of Jacobi rotations that were required. ! Please notice that the eigenvalues are not ordered on output. ! If the sorting is desired, the addintioal routine "eigsrt" ! can be invoked to reorder the output of jacobi.
上傳時間： 2016-06-04
上傳用戶：1512313
Power conversion by virtue of its basic role produces harmonics due to theslicing of either voltages or currents. To a large extent the pollution in theutility supply and the deterioration of the power quality has been generatedor created by non-linear converters. It is therefore ironic that power convertersshould now be used to clean up the pollution that they helped to create inthe first place.In a utility system, it is desirable to prevent harmonic currents (which resultin EMI and resonance problems) and limit reactive power flows (whichresult in transmission losses).Traditionally, shunt passive filters, comprised of tuned LC elements andcapacitor banks, were used to filter the harmonics and to compensate forreactive current due to non-linear loads. However, in practical applicationsthese methods have many disadvantages.
上傳時間： 2013-11-05
上傳用戶：AISINI005
The LTC®4099 high effi ciency USB power manager andLi-Ion/Polymer battery charger seamlessly managespower distribution from multiple sources in portableapplications. It is differentiated from other USB powermanagers by its bidirectional I2C port that allows the hostmicroprocessor to control and monitor all aspects of theUSB power management and battery charging processes.In addition, a programmable interrupt generation functionalerts the host microprocessor to changes in device statusand provides unprecedented control of power managementfunctions. This high degree of confi gurability allowspost-layout changes in operation, even changes in thefi eld, and it allows a single qualifi ed device to be usedin a variety of products, thus reducing design time andeasing inventory management.
上傳時間： 2013-10-22
上傳用戶：18602424091
Occasionally, we are tasked with designing circuitry for aspecific purpose. The request may have customer originsor it may be an in-house requirement. Alternately, a circuitmay be developed because its possibility is simply tooattractive to ignore1. Over time, these circuits accumulate,encompassing a wide and useful body of proven capabilities.They also represent substantial effort. These considerationsmake publication an almost obligatory propositionand, as such, a group of circuits is presented here. This isnot the first time we have displayed such wares and, giventhe encouraging reader response, it will not be the last2.Eighteen circuits are included in this latest effort, roughlyarranged in the categories given in this publication’s title.They appear at the next paragraph.
標(biāo)簽： 信號源 調(diào)節(jié)器 電源 電路分析
上傳時間： 2013-11-12
上傳用戶：012345
The ISO7220 and ISO7221 are dual-channel digital isolators. To facilitate PCB layout, the channels are orientedin the same direction in the ISO7220 and in opposite directions in the ISO7221. These devices have a logic inputand output buffer separated by TI’s silicon-dioxide (SiO2) isolation barrier, providing galvanic isolation of up to4000 V. Used in conjunction with isolated power supplies, these devices block high voltage, isolate grounds, andprevent noise currents on a data bus or other circuits from entering the local ground and interfering with ordamaging sensitive circuitry.
標(biāo)簽： ISOLATORS DIGITAL DUAL
上傳時間： 2013-10-24
上傳用戶：hbsunhui
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