温湿度测量仪外文文献翻译、中英文翻译

1、 外文翻译英文原文：Temperature and humidity measuring instrumentIntroduction Temperature and humidity measurement is a modern newly developed measurement field, especially the humidity measurement is to continue moving forward. Experienced a length method, dry and wet until today the course of the measuremen

2、t, humidity measurement technology is maturing. Today, we are no longer satisfied with the measurement of the temperature and humidity, especially in some places to monitor directly the requirements of real-time measure and record the temperature and humidity changes in the whole process, and based

3、on these changes identified during storage and transportation security, led to a new temperature and humidity measuring instrument was born. Temperature and humidity measuring instrument is the temperature and humidity parameters were measured according to a predetermined time interval stored in the

4、 internal memory, in the completion of the recording function will be coupled to a PC, use the adapter software data stored in accordance with values time analysis instrument. The instrument can determine the storage and transportation process, experiment process without any compromise product safet

5、y incident. MSP430F437 Introduced The MSP430 MCU main features are as follows:1) Ultra-low power consumption. MSP430 MCU supply voltage 1.8 to 3.6V low voltage RAM data retention mode power consumption of only 0.1uA active mode power 250uA/MIPS, IO input port leakage current of only 50nA.2) Powerful

6、 processing capability. The MSP430 MCU 16-bit microcontroller, reduced instruction set architecture with the most popular one clock cycle to execute an instruction, the MSP430 instruction speeds of up to 8MHz oscillator is 8MIPS.3) High-performance analog technology and a wealth of on-chip periphera

7、l modules. The MSP430 monolithic organic combination of TIs high-performance analog technology, each member of the rich on-chip peripherals are integrated. Depending on the model of the different possible combinations of the following modules: watchdog, analog comparator A timer A, timer B, serial 0

8、,1, hardware multiplier, LCD driver, 10/12/14-bit ADC, 12 DAC IIC bus, direct data access, port 1 to 6, the basic timer.4) The system is stable. Power-on reset, first initiated by the DC0 CPU, to ensure that the program starts executing from the correct position to ensure crystal oscillator start-up

9、 and stabilization time. The software can then set the appropriate control bits of the register to determine the final system clock frequency. If the crystal oscillator is used as the CPU clock MCLK failure, the DCO will start automatically, in order to ensure the normal operation of the system. Thi

10、s structure and operational mechanism in the current series microcontroller is unique.5) Convenient and efficient development environment. MSP430 series OTP type, three types of FLASH-ROM, the domestic large-scale use FLASH. The development of these devices means, after the successful development of

11、 the OTP and ROM-type device using a dedicated emulator programmer or chip cover touch. FLASH type is very convenient development and debugging environment, because the device on-chip JTAG debug interface, as well as the electric flash FLASH memory using the first through the JTAG interface to downl

12、oad the program to the FLASH, run by the JTAG interface control program read the on-chip CPU status, and memory contents and other information for designers debug the entire development can be carried out in the same software integrated environment. Which only requires a PC and a JTAG debugger, with

13、out the need for a dedicated emulator and programmer.Temperature And Humidity Sensor The SHT7x temperature and humidity sensor characteristics are as follows:1) The temperature and humidity sensor signal is amplified conditioning, A / D converter, all integrated on one IIC bus interface;2) Given cal

14、ibration relative humidity and temperature output;3) IIC bus with industry-standard digital output interface;4) With dewpoint calculation output function;5) With excellent long-term stability;6) Humidity value output resolution of 14 The temperature output resolution of 12 bits, and programmable;7)

15、Small size (7.65 x 5.08 x 23.5mm) Surface Mount;8) Having reliable the CRC data transmission checking function;9) The chip load calibration coefficients can guarantee 100% interchangeability;AT25256 Introduction Temperature and humidity data storage chip SPI interface uses ATMEL Corporations low-vol

16、tage serial EEPROM AT25256. AT25256 is mainly applied to low-power occasion the internal accordance with 32K x 8-bit organization, can work at 3.3V, the maximum serial clock frequency as to 2.1MHz. Support for 64-byte page write mode and byte write mode. AT25256 by setting the write-protect pin / WP

17、 level to set the chip read-only or writable state. Serial Peripheral Interface (SPI) bus technology is a synchronous serial interface, the hardware features a strong, SPI software is quite simple, so that the CPU has more time to deal with other matters. SPI bus can be connected to multiple host MC

18、U, equipped with SPI interface output devices, output devices, such as LCD drivers, A / D conversion and other peripherals can also be a simple connection to a single TTL shift register chip. The bus allows you to connect multiple devices, but only one device at any moment as the host. SPI bus clock

19、 line is controlled by the host, in addition to data lines: host input / output line from the machine and the host output / slave input line. Host and which slave communication through the slave strobe line selection. Application SPI system can be simple, complex and can take many forms: (1) a host

20、MCU and the slave MCU; (2) multiple MCU are connected to each other into a multi-host system; (3) a host MCU and slave peripherals.Segment LCD Display Principle LCD display principle is to use the physical characteristics of the liquid crystal born, when power is turned on, arranged order so light b

21、y; arranged confusion is not energized, to prevent the light to pass through. Light to pass through and not through a combination of an image is displayed on the screen. In laymans terms, the liquid crystal display is the middle of the two glass clip a layer of liquid crystal material, the liquid cr

22、ystal material to change their light transmission in the signal under the control of the state, so you can see the image in front of the glass panel. LCD ambient light to display information, the LCD itself is not self-luminous, LCD power consumption is very low, more suitable for single-chip low-po

23、wer applications. In addition, the LCD can only use low-frequency AC voltage drive, the DC voltage will damage the LCD.There are many types of LCD segment liquid crystal character LCD, graphical LCD. Segment LCD inexpensive, simple to use, is widely used in a variety of microcomputer application sys

24、tem. MSP430 LCD driver module has four driving method, respectively, for static drive, 2MUX drive, 3MUX, Drivers, 4MUX drive. Static driving method, in addition to the public badly in need of a pin, each section of the drive each one pin. If the design involves a lot of number of segments, you need

25、to take up the many pin. In order to reduce the pin number, you can select multiple drive needed: 2MUX drive, drive, 3MUX 4MUX driving method. Increase the number of public-pole, can greatly reduce the number of pins. Need to drive more segments, the more obvious effects.Conclusion The design requir

26、ements to simultaneously detect the temperature and humidity. From the temperature and humidity sensor signal IIC bus to enter MSP430F437 MSP430F437, temperature and humidity data on the one hand to send the LCD display; the other hand, the temperature and humidity data is stored in AT25256 stored t

27、emperature and humidity data can be transmitted via RS232 bus to the PC, In the PC application, you can curve shows the temperature and humidity data, and can print the report. This design uses the MSP430 MCU measurement of temperature and humidity, display, storage, transmission, printing and other

28、 functions. But also through the button on the temperature and humidity measurement time interval, whether storage, starting time and other parameters set. In addition, the entire system can be connected to external 9V DC power supply, you can use a 9V lithium battery-powered, low-power design ultra

29、-low power MSP430 MCU, and program design, making the whole system very power, particularly suitable for hand-held meter.中文翻译：温湿度测量仪 1 引言 温湿度测量是现代测量新发展出来的一个领域，尤其湿度的测量更是不断前进。经历了长度法、干湿法直至今天的电测量的历程，使湿度测量技术日渐成熟。时至今日，由于我们不再满足于温湿度的测量，尤其是一些场所的监控直接要求实时测量并记录其全过程温湿度变化，并依据这些变化认定储运过程的安全性，导致了新的温湿度测量仪的诞生。温湿度测量仪是将

30、温湿度参数进行测量并按照预定的时间间隔将其储存在内部存储器中，在完成记录功能后将其联接到PC机，利用适配软件将存储的数据提出并按其数值、时间进行分析的仪器。利用该仪器可确定储运过程、实验过程等相关过程没有任何危及产品安全的事件发生。 2 MSP430F437介绍 MSP430单片机主要特点如下：1) 超低功耗。MSP430系列单片机的电源电压采用1.83.6V低电压，RAM数据保持方式下耗电仅仅0.1uA，活动模式耗电250uA/MIPS，IO输入端口的漏电流最大仅仅50nA。2) 强大的处理能力。MSP430系列单片机是16位单片机，采用了目前最流行的精简指令集结构，一个时钟周期可以执行一条

31、指令，使MSP430在8MHz晶振工作时，指令速度可达8MIPS。3) 高性能模拟技术及丰富的片上外围模块。MSP430系列单片有机结合TI的高性能模拟技术，各成员都集成了较丰富的片内外设。视型号的不同可能组合有以下功能模块：看门狗，模拟比较器A，定时器A，定时B，串口0，1，硬件乘法器，液晶驱动器，10位/12/14位ADC，12位DAC，IIC总线，直接数据存取，端口16，基本定时器等。4) 系统工作稳定。上电复位后，首先由DC0启动CPU，以保证程序从正确的位置开始执行，保证晶体振器有足够的起振及稳定时间。然后软件可设置适当的寄存器的控制位来确定最后的系统时钟频率。如果晶体振荡器在用作C

32、PU时钟MCLK时发生故障，DCO会自动启动，以保证系统正常工作。这种结构和运行机制，在目前各系列单片机中是绝无仅有的。5) 方便高效的开发环境。目前MSP430系列有OTP型、FLASH型和ROM型3种类型，国内大量使用的是FLASH型。这些器件的开发手段不同，对于OTP型和ROM型的器件是使用专用仿真器开发成功之后再烧写或掩摸的芯片。对于FLASH型则有十分方便的开发调试环境，因为器件片内有JTAG调试接口，还有可电擦写的FLASH存储器，因此采用先通过JTAG接口下载程序到FLASH内，再由JTAG接口控制程序运行，读取片内CPU状态，以及存储器内容等信息供设计者调试，整个开发都可以在同

33、一个软件集成环境中进行。这种方式只需要一台PC机和一个JTAG调试器，而不需要专用仿真器和编程器。 3 温湿度传感器介绍 SHT7x温湿度传感器的主要特性如下：1) 将温湿度传感器、信号放大调理、A/D转换、IIC总线接口全部集成于一片；2) 可给出全校准相对湿度及温度值输出；3) 带有工业标准的IIC总线数字输出接口；4) 具有露点值计算输出功能；5) 具有卓越的长期稳定性；6) 湿度值输出分辨率为14位，温度值输出分辨率为12位，并且可编程；7) 小体积（7.655.0823.5mm），可表面贴装；8) 具有可靠的CRC数据传输校验功能；9) 片内装载的校准系数可保证100%互换性； 4 AT25256介绍温度湿度数据存储芯片采用ATMEL公司的SPI接口的低电压串行EEPROM AT25256。AT25256主要适用于低功耗场合，内部按照32K8位组织，可以工作在3.3V电压下，最大串行时钟频率为2.1MHz。支持64字节的页写方式以及字节写方式。另外，AT25256还可以通过设置写保护引脚/WP的电平来设置芯片的只读或可写状态。串行外围设备接口SPI总线技术是一种同步串行接口，其硬