本系統(tǒng)基于STM32單片機(jī)設(shè)計的非接觸式電流檢測控制系統(tǒng),通過OPA548片將所給任意信號放大,由100Ω電阻和INA128芯片進(jìn)行電流電壓轉(zhuǎn)換放大后,利用STM32單片機(jī)對獲取的電壓信號以0.488μs頻率采樣,利用STM32單片機(jī)的FFT庫,獲得信號的諧波信息。測量電流信號精準(zhǔn),該設(shè)計可廣泛應(yīng)用在以STM32單片機(jī)為核心控制器件的新型儀表中,性能精準(zhǔn)且抗干擾能力強(qiáng)。This system is a non-contact current detection and control system based on STM32 single chip microcomputer. It amplifiesany signal through OPA548 chip, converts and amplifies the current and voltage by 100 Ω resistance and INA128 chip. The obtainedvoltage signal is sampled at the frequency of 0.488 μs by STM 32 single chip microcomputer, and the harmonic information of the signalis obtained by the FFT library of STM 32 single chip microcomputer. The measurement of current signal is accurate. This design can bewidely used in a new instrument with STM 32 single chip microcomputer as its core control device, with accurate PerFormance and stronganti-interference capability.
上傳時間： 2022-03-27
上傳用戶：
在傳統(tǒng)智能小車驅(qū)動電路設(shè)計中,較多考慮使用直流電機(jī)還是步進(jìn)電機(jī),電機(jī)功率、能耗等性能參數(shù)。使用具有armCortexM4內(nèi)核的STM32嵌入式平臺控制四輪的4個直流電機(jī)。文章基于PWM技術(shù)及PID算法,對四輪進(jìn)行精準(zhǔn)地速度、轉(zhuǎn)向及啟停控制,實驗表明此小車具有優(yōu)越各種地形適應(yīng)能力。In the traditional intelligent car drive circuit design,DC motor or stepping motor,motor power,energy consumption and other PerFormance parameters are considered.The four DC motors with four wheels are controlled by STM32 embedded platform with arm Cortex M4 kernel.Based on the PWM technology and PID algorithm,the accurate ground speed,steering,and start-stop control of the four wheels are carried out.The experiment shows that the vehicle has the superior adaptability to all kinds of terrains.
標(biāo)簽： stm32 智能小車 控制系統(tǒng)
上傳時間： 2022-04-02
上傳用戶：
為了確保最佳性能，請仔細(xì)閱讀本手冊。請將其保存在安全的地方，以備將來參考。將本機(jī)安裝在陰涼，干燥，清潔的地方-遠(yuǎn)離窗戶的熱源，過多的振動灰塵，濕氣和冷源。避免嗡嗡聲的變壓器，電動機(jī)。為避免起火或電擊，請勿使本機(jī)遭受雨淋或浸水。絕對不要機(jī)柜。如果有東西掉入設(shè)備中，請與經(jīng)銷商聯(lián)系。不要在開關(guān)，控件或連接線上用力。移動設(shè)備時，請先拔下電源插頭和與其他設(shè)備相連的電線。切勿自己拉電線。機(jī)柜上的開口可確保設(shè)備正常通風(fēng)。如果這些開口被阻塞，則機(jī)柜內(nèi)部的溫度將迅速升高。因此，請避免將物品放在這些開口處，并將其安裝在后方10厘米，兩側(cè)20厘米，深30厘米9通風(fēng)條件確保設(shè)備的頂部面板至少留出一定空間。否則不僅會損壞設(shè)備，還會引起火災(zāi)。To assure the finest PerFormance, please read this manual carefully. Keep it in a safe place for future reference Install this unit in a cool, dry, clean place -away from windows heat sources, sources of excessive vibration dust, moisture and cold. Avoid sources of humming transformers, motors). To prevent fire or electrical shock do not expose the unit to rain or water.
上傳時間： 2022-04-02
上傳用戶：
目的:自主研制一款超聲手術(shù)刀電源控制系統(tǒng),以減少能量的消耗,維持手術(shù)刀的正常溫度。方法:對超聲換能器在諧振附近的等效電路建立模型,并設(shè)計基于數(shù)字信號處理(DSP)的超聲手術(shù)刀的硬件控制系統(tǒng)。結(jié)果:經(jīng)對電源控制系統(tǒng)的電路和工作性能測試,生成的電流和電壓的有效值等參數(shù),能夠及時調(diào)整電源的頻率,并達(dá)到預(yù)期的功能指標(biāo),使超聲手術(shù)刀工作在諧振狀態(tài)。結(jié)論:以DSP為核心設(shè)計的超聲手術(shù)刀電源控制系統(tǒng),測試指標(biāo)均能夠達(dá)到預(yù)期的要求,能夠使系統(tǒng)在諧振狀態(tài)下工作。Objective: To independently develop a power control system of ultrasonic scalpel so as to reduce the energy consumption and maintain the normal temperature of ultrasonic scalpel. Methods: In this paper, the model of equivalent circuit of ultrasonic transducer nearby syntony was built up, and the hardware control system of ultrasonic scalpel based on digital signal processing(DSP) was designed. Results: Through testing the circuit and work PerFormance of power control system, the series of parameters such as effective value and so on which were produced by this system could adjust frequency of power source in time and attain anticipative functional indicator, and it took the ultrasonic scalpel to work in syntonic situation. Conclusion: The tested indicators of power control system of ultrasonic scalpel based on the kernel design of DSP can attain anticipative requirement, and can take this system to work in syntonic situation.
標(biāo)簽： 數(shù)字信號處理 超聲手術(shù)刀 電源控制
上傳時間： 2022-04-03
上傳用戶：bluedrops
本文設(shè)計了一種磁致伸縮位移傳感器,介紹了該磁致伸縮位移傳感器的測量原理,通過結(jié)構(gòu)優(yōu)化設(shè)計提高了儀器的性能,詳述了硬件電路設(shè)計及實現(xiàn)方法,完成了軟件設(shè)計,實現(xiàn)了高壓充電、問詢脈沖加載、時間測量及濾波等功能,并通過實驗對其性能進(jìn)行了驗證。所研制的磁致伸縮位移傳感器具有測量精度高、長期穩(wěn)定性好等特點,滿足了大量程、高精度、惡劣環(huán)境等測量的要求。A kind of sensor based on magnetostrictive principle is designed.The measuring principle of the magnetostrictive displacement sensor is introduced,the PerFormance of the instrument is improved by the structural optimization design,and introduced the hardware circuit design and the realization method,completed the software design,realized the functions of the high voltage charging,inquiries pulse loading,time measurement and filtering,and its PerFormance is verified through the experiment.The magnetostrictive displacement sensor has the characteristics of high measuring precision.The sensor meets the requirements of large range,high precision,poor environment and so on.
標(biāo)簽： 位移傳感器
上傳時間： 2022-04-06
上傳用戶：
高通藍(lán)牙芯片QCC5144 詳細(xì)規(guī)格手冊datasheet （共99頁）含各個接口說明，應(yīng)用原理圖等信息。 QualcommTrueWireless? stereo earbuds (無線雙耳） Features（特點） ■ Qualifiedto Bluetooth v5.2 specification （藍(lán)牙協(xié)議標(biāo)準(zhǔn)5.2） ■ 120 MHz Qualcomm ? Kalimba ? audio DSP （120MHz 的音頻DSP處理器） ■ 32 MHz/80MHz Developer Processor for applications ■ Firmware Processor for system ■ Flexible QSPI flash programmable platform （可編程的QSPI外掛存儲器） ■ High-PerFormance 24?bit audio interface （高性能的24位音頻接口） ■ Digital and analog microphone interfaces （含 數(shù)字 及模擬 MIC接口） ■ Flexible PIO controller and LED pins with PWM support ■ Serial interfaces: UART, Bit Serializer (I2C/SPI), USB 2.0 （支持串口，I2C， SPI，USB 接口） ■ Advanced audio algorithms （高級的音頻算法） ■ ActiveNoise Cancellation: （支持ANC 主動降噪功能） Hybrid, Feedforward, and Feedback modes, using Digital or Analog Mics, enabled using license keys available from Qualcomm? ■ Qualcomm ? aptX ? and aptX HD Audio （支持獨特的aptx 功能）
上傳時間： 2022-04-07
上傳用戶：
高通藍(lán)牙芯片QCC3040 詳細(xì)規(guī)格手冊datasheet （共96頁）QualcommTrueWireless? stereo earbuds (無線雙耳）Features（特點）■ Qualifiedto Bluetooth v5.2 specification （藍(lán)牙協(xié)議標(biāo)準(zhǔn)5.2）■ 120 MHz Qualcomm ? Kalimba ? audio DSP （120MHz 的音頻DSP處理器）■ 32 MHz Developer Processor for applications （32MH的 應(yīng)用處理器）■ Firmware Processor for system■ Flexible QSPI flash programmable platform （可編程的QSPI外掛存儲器）■ High-PerFormance 24?bit audio interface （高性能的24位音頻接口）■ Digital and analog microphone interfaces （含 數(shù)字 及模擬 MIC接口）■ Flexible PIO controller and LED pins with PWM support■ Serial interfaces: UART, Bit Serializer (I2C/SPI), USB 2.0 （支持串口，I2C， SPI，USB 接口）■ Advanced audio algorithms （高級的音頻算法）■ ActiveNoise Cancellation: （支持ANC 主動降噪功能）Hybrid, Feedforward, and Feedback modes, using Digitalor Analog Mics, enabled using license keys available from Qualcomm?■ Qualcomm ? aptX ? and aptX HD Audio （支持獨特的aptx 功能）
上傳時間： 2022-04-09
上傳用戶：slq1234567890
Springer模擬電路設(shè)計叢書，《清華版雙語教學(xué)用書·模擬集成電路設(shè)計精粹》作者首先對MOST和BJT兩種器件模型進(jìn)行了分析和比較，然后以此為兩條線索，分別介紹了相應(yīng)的基本單元電路和各類放大器的詳細(xì)分析，隨后的章節(jié)分別研究噪聲、失真、濾波器、ADC／DAC和振蕩器電路，每一章都結(jié)合MOST和BJT兩種類型電路進(jìn)行分析比較。《清華版雙語教學(xué)用書·模擬集成電路設(shè)計精粹》一方面?zhèn)戎赜诨A(chǔ)知識，對模擬和混合信號集成電路中的許多重要概念以直觀形象的語言進(jìn)行了描述。另一方面又側(cè)重介紹與現(xiàn)代集成電路工藝相關(guān)的最新電路的研究方向和熱點。Next-Generation ADCs, High-PerFormance Power Management, and Technology Considerations for Advanced Integrated Circuits
上傳時間： 2022-04-19
上傳用戶：
隨著科技的發(fā)展，人們在日常生活中使用的電器越來越多，電子設(shè)備的電磁兼容性（EMC）也越來越重要。所以，人們對電子設(shè)備的電磁兼容性的要求也越來越嚴(yán)格，越來越規(guī)范。而在市場競爭中，如何降低成本、減少設(shè)備體積，是各電子設(shè)備制造廠家重點研究的課題。通過對開關(guān)電源的EMI濾波電路的類別和相應(yīng)的技術(shù)特點進(jìn)行分析，設(shè)計出一種既能提高性能，又能降低成本的濾波電路。With the development of technology, appliances people use in their daily lives, more and more electronic devices electromagnetic compatibility （ EMC ） has become increasingly important. So, people electromagnetic compatibility requirements of electronic devices have become increasingly stringent, more and more standardized. The competition in the market, how to reduce costs, reduce equipment size, is the subject of the electronic equipment manufacturer focused on research. Through the technical characteristics of the respective category and the EMI filter circuit switching power supply is analyzed both designed to improve a PerFormance of the filter circuit can reduce the cost.
標(biāo)簽： 開關(guān)電源 濾波電路
上傳時間： 2022-04-23
上傳用戶：
The GL823K integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best data transfer PerFormance between USB and flash card interfaces. Its pin assignment design fits to card sockets to provide easier PCB layout. Inside the chip, it integrates 5V to 3.3V regulator, 3.3V to 1.8V regulator and power MOSFETs and it enables the function of on-chip clock source (OCCS) which means no external 12MHz XTAL is needed and that effectively reduces the total BOM cost.
上傳時間： 2022-04-27
上傳用戶：qdxqdxqdxqdx
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