美国DT 7705A1低频加速度传感器

7705A1低频加速度传感器

深圳市汉斯福特科技有限公司

杨工

座机：0755-26552352

手机：13352927502

传真：0755-23343535

Q  Q: 1138493826

公司地址：龙华新区大浪街道大浪社区伟达工业园A栋2楼

公司网址：www.huntsort* 

概述

Dytran’s new generation of sensors combines two technologies (piezoelectric and DC resp*e MEMS), which until now h*e never been packaged simultaneously in a single housing.

通过测量由于重力引起的加速度，你可以计算出设备相对于水平面的倾斜角度。通过分析动态加速度，你可以分析出设备移动的方式。但是刚开始的时候，你会发现光测量倾角和加速度好像不是很有用。但是，工程师们已经想出了很多方法获得更多的有用的信息。

The Dytran 7705A1  Extended Low Frequency (ELF™) accelerometer combines both a piezoelectric and*ariable capacitance MEMS element, combined as a single output, to create the widest frequency resp*e bandwidth in the industry, from DC (0 Hz) to 10 kHz. Unique ELF™ technology combines the mos*sirable features of piezoelectric sensors (excellent high frequency resp*e) with those of variable capacitance accelerometers (true DC resp*e), eliminating the need for using two different technologies to cover the bandwidth of interest in an application. Slow rotati*peeds in the sub-1Hz range and gear mesh frequencies up to 10 kHz can now be made using the same sensor. The Dytran model 7705A1 ELF™ accelerometers are ideal for flight testing, ride quality, Health & Usage Monitoring Systems (HUMS), wind turbine measurement*achinery monitoring, and the widest range of structural resp*e applicati*.

*检波器是用于地质勘探和工程测量的*传感器，是一种将地面振动转变为电信号的传感器，能把*波引起的地面震动转换成电信号，经过模/数转换器转换成二进制数据、进行数据*、存储、运算处理。加速度传感器是一种能够测量加速力的电子设备，典型应用在手机、笔记本电脑、步程计和运动检测等。

ELF™ accelerometer model 7705A1 is offered with a 200g range and operates on 5-28 VDC power at 7-9 mA of current. Signal/power is handled via a 4-pin M4.5 x 0.35 radial connector. The lightweight titanium housing weighs just 15 grams, and is hermetically sealed for use in ru*ed environments, from test tracks to outer *ce. The ELF™ incorporates a 10-32 tapped mounting hole and a hex bas

在汽车工业高速发展的现代，汽车成为了人们出行主要的交通工具之一，但是因交通事故的*数量也十分巨大。在信息化的现代利用高科技去挽救人的生命将会是重大研究的主题之一，基于加速度的车祸报警系统正是怀着这种设计理念，相信这种系统的推广，会给汽车行业带来更多的安全。

特性

1. 10 mV/g sensitivity

2. 200g range

3. 0 to 10,000 Hz frequency range (±10%)

4. 4-pin M4.5 x 0.35 radial connector

5. 10-32 tapped hole

6. 15 grams

7. Titanium

8. Hermetic

9. Hybrid design

10. Dual mode technology: incorporates AC and DC i* one sensor

目前国内对导线舞动监测多采用视频图像采集和运动加速度测量两种主要技术方案。前者在野外高温、高湿、严寒、浓雾、沙尘等天气条件下，不仅对视频设备的可靠性、稳定性要求很高，而且拍摄的视频图像的效果也会受到影响，在实际使用中只能作为辅助监测手段，无法定量分析导线运动参数；而采用加速度传感器监测导线舞动情况，虽可定量分析输电导线某一点上下振动和左右摆动的情况，但只能测出导线直线运动的振幅和频率，而对于复杂的圆周运动，则无法准确测量。所以我们必须加快加速度传感器的发展来适应诸如此类环境下进行应用。

应用

1. Flight testing

2. Health & Usage Monitoring Systems (HUMS)

3. Machinery monitoring

4. Ride quality

5. Wind turbine measurements

6. Wide range of structural resp*e applicati*

在安全应用中，加速度计的快速反应非常重要。安全气囊应在什么时候弹出要迅速确定，所以加速度计必须在瞬间做出反应。通过采用可迅速达到稳定状态而不是振动不止的传感器设计可以缩短器件的反应时间。其中，压阻式加速度传感器由于在汽车工业中的广泛应用而发展****快。

参数

Weight, Max.  0.53 oz

Mounting 10-32 Tapped Hole 10-32 Tapped Hole

Connector Type 4-pin, M4.5X0.35 4-pin, M4.5X0.35

Housing Material Titanium

Sensitivity, ±10% [1] 10 mV/g 1.0 mV/m/s2

Acceleration Range ±200 Gpeak ±1962 m/s2

Frequency Resp*e, ±10% 0 to 10,000 Hz 0 to 10,000 Hz

Resonance Frequency >38 kHz >38 kHz

Linearity [2] 1 % F.S. 1 % F.S.

Transverse Sensitivity <3 % <3 %

Output Noise, Broadband, Max. 0.008 Grms 0.0785 m/s2

Phase shift mi*atch, Max. +/-2 degrees +/-2 degrees

Absolute phase shift, Max [3] +/-5 degrees +/-5 degrees

Base Strain 0.0004 g/µɛ 0.0039 m/s2

/µɛ

Bias Offset Max 0.2 g's 1.96 m/s2

ENVIRONMENTAL

Maximum Mechanical Shock 5,000 Gpeak 49,050 m/s2

Bias Temperature Shift, Max 56 (ppm of *n)/°F 101 (ppm of *n)/°C

1.5 % of *n 1.5 % of *n

 -60 to +250 °F -51 to 121 °C

Thermal Coefficient 0.06 %/°F 0.12 %/°C

Seal Hermetic Hermetic

POWER

Compliance Voltage +5 to +28 VDC +5 to +28 VDC

Current Range 5 to 10 mA DC 5 to 10 mA DC

Output Bias Voltage, Typical 2.45 VDC 2.45 VDC

Output Impedance, Nom. 1 Ω 1 Ω

Power Supply Rejection Ratio >65 dB >65 dB

配件

Supplied Accessories: (1) model 6200 mounting stud

Recommended Accessorie*odel 6213 adhesive mounting base, model 6258 magnetic mounting base

Compatible Cables: 6776A

订货型号

Model    Sensitivity  Range     Maximum Shock  Noise Broadband

        (mV/g)       (Gpeak)   (Gpeak)        (grms)

7705A1   10           ±200     5,000          0.008

7705A2   50           ±40      5,000          0.002