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超声波传感器原理及技术资料
超声波传感器分类及应用
国产超声播传感器一
国产超声波传感器二
超声波感应模块
SS-311超声波感应模块
SS-311RT超声波感应模块
超声波测距模块/测距仪
超声波物位变送器
超声波传感器/换能器/雾化器 
压电陶瓷超声波传感器
超声波油量传感器
CIM超声波防双张检测传感器
AIRMAR超声波传感器
SENSCOMP超声波传感器
MAXBOTIX超声波传感器
德国Microsonic超声波传感器
Baumer超声波传感器
西门子3RG6 BERO超声波传感器
德国生产的CANKEY产品
德国倍加福P+F
精量MEAS/Measurement
GE美国通用检测技术
Honeywell美国霍尼韦尔
TURCK图尔克
ProWave普崴電子
超声波测厚仪
压电陶瓷超声传感器
40RS防水型超声波传感器

超声波测距电路板CJ-1B  RS232接口

CJ-1超声波传感器测距电路板  0.24--5M
超声波物体位移探测器
LED数显超声波测距控制器  0.24---10M
CJ-2超声波测距板(可提供散件)
CJ-3超声波测距板 (可提供散件) 0.27--5米
超声波距离传感器  新
超声波测距系统的电路设计
超声波汽车测距告警装置
40kHZ超声波发射/接收电路 综述
51单片机设计测距仪原理及其简单应用
超声波液位/物位传感器
MSP430超声波测距
基于TA8141S超声波测距的调试
超声波驱鼠器传感器
超声波流量计
一体式超声波热(冷)量表
 
分体式超声波热(冷)量表
 
便携式超声波热(冷)量表
 
手持式超声波流量计
 
固定一体功能型超声波流量计
 
固定分体式超声波流量计
 
便携式超声波流量计
超声波液位传感器
分体式液物位仪
一体式超声波液位计
 
·超声波流量计
·
明渠流量计
·
多普勒流量计
·
电磁流量计
·
差压式流量计
·压力液位计
·
投入式液位计
·
浮筒液位计
·
浮球液位计
·
吹泡式液位计
·
导波声纳液位计
·
超声波物位计
·超声波物位探头
·
超声波物位变送器
·
泥水界面仪
·
雷达物位计
·
激光物位计
·
物位开关
·激光三维扫描系统
·
泥浆密度计
·
油雾浓度计
·
油中水浓度计
·
光泽度计
 
 
 
关于微波传感器
MC系列产品
MC微波模块应用产品
MC平面微带介质谐振传感器
MC波导谐振型传感器
实用电路与比较
可调范围微波传感器
微波雷达感应开关
声光控开关
LED感应开关
人体红外线感应开关
自动门微波传感器
SS-968雷达模块
SS-9261雷达探测器
TWH9251A 雷达探测器模块
振动传感器
人体接近传感器
ATM人体接近传感器
微波传感器
微波探测器传感器
ATM微波传感器
微波传感器/微波移动探测器
微波雷达测速测距传感器
超声波测距控制器
交通雷达传感器
安防报警/消防设施传感器
雷达探测器/雷达模块
射频物位开关
螺传感器/陀螺仪
磁场传感器/磁敏传感器
旋转编码器/轴角传感器/角度
霍尔元件/霍尔IC/霍尔传感器
 
 
 
 
 
 
 
 
 
  超音波換能器   聲納積體電路及其它相關零件  壓電產品  超音波近接感應器  超音波儀器及設備超
超音波聲納測距積體電路及相關零件
1. 聲納測距積體電路 - PW0268
2. 聲納測距模組
  (1) SRM400 - 汽車防撞模組 (0.25 - 1.5 meters)
  (2) SRM401 - 超音波電子尺模組 (0.5 - 15 meters)
3. 匹配變壓器
4. 音叉型石英振盪器
 
聲納測距積體電路 - PW 0268
Features:
  • Operating Voltage: 6 – 12Vdc single source
  • Broadband output ranging up to 200KHz
  • Variable R/C Oscillator: compensates for transducer resonate frequency drift due to temperature
  • High Gain Amplifier: varies with time over 32 step
  • Integrated Band Pass Filter: reduces external component count
  • Bi-direction I/O Pin: simplifies the control function for transmitting a pulse and receiving an ech
  • An adjustable System Clock: enables the control of, the number of pulses transmitted, the slope of the variable gain amplifier, and the pulse repetition rate

 
Description:
The PW-0268 ultrasonic sonar ranging IC is ideally suited for echo ranging systems. This chip has many design features to enhance its performance and ease of use in this application.

The externally tunable RC Oscillator automatically tracks and compensates for the shift of the resonate frequency of the transducer due to temperature changes.

The Fix Gain Preamplifier can be tailored to compensate for varying transducer sensitivities. The 32-step Time Controlled Variable Gain Amplifier slope can be modified by adjusting the frequency of the system clock.

An onboard Comparator converts the analog signal of the returning echo to a TTL level digital signal for use with an external microprocessor.

The integrated Band Pass Filters can be adjusted for custom applications by changing a few external components. The frequency of the System Clock can be adjusted to control other operating parameters of the chip including the transmit pulse width and sample rate.

The I_O pin, (pin 1) is a bi-direction pin and is designed as an open collector connection with an internal pull high resistor. When the I_O pin is being pulled low by an external transistor, the RC oscillator generates a tone burst signal at DRIVER_0 (pin 11), the output driver stage for the transducer. After the transmit pulse, the I_O pin, (pin 1) will again go low if a valid echo signal is detected.

The reflected echo signal is presented to the first stage pre-amplifier through ECHO (pin 10). The gain of pre-amplifier can be adjusted to accommodate transducers with varying sensitivities by changing an external resistor between ECHO (pin 10) and GR_I (pin 9).

The 32 steps time controlled variable gain amplifier input TCG_I (pin7) and output TCG_O (pin 6) is synchronized to start incrementing at the end of control pulse signal I-O, (pin 1) and is reset at the beginning of the next control pulse.

Only a few passive components are needed for the active band pass filter. There are two stages, a low pass, LP_I (pin 5) and LP_O (pin 4) and upper band pass, HP_I (pin 3) to HP_O (pin 2). The center frequency and bandwidth of the filter are chosen based on the type of ultrasonic transducer being used and the specific application. The amplified echo signal after being filtered is routed to a comparator, which shapes and coverts the analog echo signal into digital signal outputted at I_O (pin 1) for further μP handling.

The unique temperature compensating Ultrasonic R/C Oscillator circuitry tracks the resonant frequency drift of the transducer that is causes by environment temperature changes. Simply adding dual diodes and one resistor between DRIVER_O (pin 11) and Ftrace (pin 12) is all that is needed to complete this function
汽車防撞模組 SRM400
汽車防撞模組 SRM400 利用先進技術研發之聲納測距積體電路配合我們, 請參考, 聲納測距積體電路, PW-0268, which can work with all our PT or EP type transducers.
Features
  • Operating Voltage: 6 – 12Vdc single source
  • Operating Frequency: broadband output ranging up ... to 250KHz Built-in variable RC oscillator matching transducers ... with different frequencies
  • High Gain Amplifier: varies with time over 32 steps
  • Integrated Band Pass Filter: reduces external ... component count ,
  • Bi-direction I/O Pin: simplifies the control function for ...transmitting a pulse and receiving an echo
  • An adjustable System Clock: enables the control of, ...the number of pulses transmitted, the slope of the ... variable gain amplifier, and the pulse repetition rate
  • Board size: 27.9 * 18 mm (L*W)

 
Specification
Operation voltage DC6 - 12V
Operation current <30 mA @ DC10V, pulse width 0.5ms,
≧15ms Repetition rate
Oscillation frequency Variable RC oscillator
Amplifier gain  
Pre-Amplifier
14 dB
2nd Stage Amplifier
30 dB
Time controlled 32 steps main amplifier
35 dB max.
Bandpass Filter Fc: 38KHz
Band: 20KHz
Loss: 1dB
Bi-directional I/O  
Input signal
open collector pull low
Output
0.05*Vcc to 0.9*Vcc digital echo signals
Measuring distance 25 – 150 cm
 
SRM400 includes:
  1. Module board
  2. 400EP14D enclosed type transducer of asymmetrical beam patterns, see detail specification of 400EP14D.
  3. Detail electrical schematic
匹 配 變 壓 器
尺 寸

 
規 格
型 號 K4000001 K4000002 K4000003 K4000004 K4000005
工作頻率 40.0 KHz 40.0 KHz 235.0 KHz 40.0 KHz 125.0 KHz
電感調整量 (min.) 10.6 mH± 6% 5.3 mH± 6% 1.0 mH± 6% 6.0 mH± 6% 1.5 mH± 6%
無載 Q 值(min.) 70 100 25 90 80
匝數比 1:10 1:10 1:10 1:10 1:20
適用換能器型號 400EP14D 400EP14D* 235SR130 400EP18A 125SR250
尺寸 Figure 1 Figure 1 Figure 2 Figure 1 Figure 1
*(Temperature Compensated Type)
音叉型石英振盪器
Dimensions

 
Specification
Model Number S40000 S32800
Nominal Frequency (Hz) 40,000 Hz 32,768 Hz
Tolerance at 25 ° C (PPM) ± 60 ± 20
Temperature Stability (-10 °C to +70 °C) (PPM) ± 45 ± 30
Load Capacitance (pF) 12.5 12.5
Series Resistance (Ohm) 35,000 35,000
Shunt Capacitance (pF) 2.3 2.3
Drive Level (mW) 0.001 0.001

 

 

 

 

 

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