7700A1   微型加速度传感器                    7700A1   微型加速度计

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：

 概述

The Dytran 7700A1 is a high precision variable capacitance (VC) accelerometer, designed to be used as a drop-in replacement for piezoresistive units in new or existing zero-to-medium frequency instrumentation applications.

加速度传感器是一种能够测量加速力的电子设备。加速力就是当物体在加速过程中作用在物体上的力，就好比地球引力，也就是重力。加速力可以是个常量，比如g，也可以是变量。加速度计有两种：一种是角加速度计，是由陀螺仪（角速度传感器）的改进的。另一种就是线加速度计。

Available with a 5g range, the Dytran model 7700A1 incorporates a MEMS capacitive sensing element and an advanced ASIC to simulate piezoresistive bridge operation, as well as an integrated VC accelerometer chip with high drive, low impedance buffering. Units respond to both DC and DC acceleration. On-board regulation minimizes supply voltage variation effects, making them relatively insensitive to temperature changes and thermal gradients. Sensors are hermetically sealed for reliable operation in high humidity and dirty environments, and feature a custom integrated circuit amplifier and differential output stages, with a 4-pin M4.5 x 0.35 radial connector and 10-32 stud mounting capabilities.

加速度传感器，包括由硅膜片、上盖、下盖，膜片处于上盖、下盖之间，键合在一起；一维或二维纳米材料、金电极和引线分布在膜片上，并采用压焊工艺引出导线；工业现场测振传感器，主要是压电式加速度传感器。其工作原理主要利于压电敏感元件的压电效应得到与振动或者压力成正比的电荷量或者电压量。目前工业现场典型采用IEPE型加速度传感器，及内置IC电路压电加速度传感器，传感器输出与振动量正正比的电压信号。

The Dytran model 7700A1 accelerometer uses the same power supply as piezoresistive and strain gage sensors, allowing them to operate as stand-alone differential output accelerometers or in place of piezoresistive bridge-type accelerometers.

特性

1.   100 mV/g sensitivity

2.   5g range

3.   0 to 600 Hz frequency range (3dB)

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

5.   10-32 tapped hole

6.   8 grams

7.   Titanium

8.   Hermetic

9.   Differential output

10.  MEMS technology

11.  Same power supply requirements as strain gage sensors

12.  DC response

应用

1.   Airbag testing

2.   Crash testing

3.   Flight testing

4.   Ride quality

5.   Seismic monitoring

参数

Weight, Max 0.28 oz 8.0 grams

Mounting Tapped Hole 10-32 UNF-2B 10-32 UNF-2B

Material Ti-6AI-4V Ti-6AI-4V Notes:

Input Range ±5 g ±49 m/s2

Sensitivity Differential, ±5% [1] 100 mV/g 10.2 mV/m/s2

Non-Linearity, Max [2] 0.5 % F.S 0.5 % F.S

Sensitivity Change with Excitation Voltage (6-22 Volts) 0.3 % 0.3 %

Cross Axis Sensitivity < 3 % < 3 %

Maximum Mechanical Shock (0.1 ms) ±2000 gpk ±19620 m/s2 peak

Bias Temperature Shift ,Max [3] 111 (ppm of span)/°F 200 (ppm of span)/°C

Sensitivity Temperature Shift -139 to +139 ppm/°F -250 to +250 ppm/°C

Operating Temperature Range -40 to +176 °F -40 to +80 °C

Seal Hermetic Hermetic

并把一维或二维纳米材料连接成测量电桥；所述的信号处理电路包括：整流稳压电路、载波振荡器、测量电桥和交流载波放大器。加速度(力)信号作用在质量块上，使膜片发生应变，利用膜片上的纳米材料测出应变，利用全桥检测方法，将材料应变转化为电信号，再通过一系列的信号处理过程，从而得到被测加速度信号的数值。根据本发明的这种微型膜片式加速度传感器具有很高的灵敏度，并可进行批量生产。

Output Common Mode Voltage ± VDC [4] [4]

Output Impedence,Nom 1225 Ω 1225 Ω

Operating Voltage ±3 to ±11 VDC ±3 to ±11 VDC

Operating Current, Max 13 mA Dc 13 mA Dc

Change in Operating Current to Excitation Voltage 0.25 mA/V 0.25 mA/V

配件

Supplied Accessories: (1) model 6200 mounting stud (10-32 to 10-32)

订货型号

7700A1       ±5      0-600       100         5000       7

7700A2       ±10     0-1000      50          5000       10

7700A3       ±25     0-1500      20          5000       25

7700A4       ±50     0-2000      10          5000       50

7700A5       ±100    0-2500       5          5000       100

7700A6       ±200    0-3000      2.5         5000       200