Description
Waterproof Ultrasonic Sensor Module Rs485 40KHz 22-600CM ranging sensor Small angle Measuring distance Sensor
feature:
High sound pressure output
5V power supply
Current less than 20mA
MAX485 automatic output
The sensor center frequency is 40KHz
Operating temperature -15 ° C to +60 ° C
Storage temperature -25°C to +80°C
Measurement accuracy ±1cm+(S*0.3%)
(S is the measured value)
advantage:
Strong anti-interference
Data output is stable and reliable
Fast response time
Strong antistatic
Wide operating temperature
High measurement accuracy
Easy installation
Automatic output mode, release user processor
There is a controlled output mode, which can minimize power consumption according to actual application.
Distance measurement
Requires 100% measurement of reliable and stable distance values, and the measured object is guaranteed to be within the effective range of the sensor. Most users find that the sensor can also be measured outside the blind zone or range. Due to the physical characteristics of the ultrasonic wave, the company does not guarantee the accuracy of the measured distance value for different measurement objects.
Input voltage 5VDC
Working current ≤20mA
Blind zone distance 0-22cm
Plane object range 22-600cm
Output mode MAX485
Work cycle 100ms
Normal temperature measurement accuracy ±1+(S*0.3%)cm
Probe center frequency 40K±1.0KHz
Detecting shaft stability ±2.5 degrees
Working temperature 15~60°C
Storage temperature 25~80°C
Working humidity ≤80%RH
Storage humidity ≤90%RH
Remarks
PIN 1 black line GND power ground pin
PIN 2 yellow line A 485 A output pin
PIN 3 blue line B 485 B output pin
PIN 4 brown line VCC 5V power input pin
MAX485 communication format
| Max485 | Data bit | Stop bit | Parity | Baud rate |
| Level | 8 | 1 | NO | 9600 |
MAX4855 output format
| Frame data | Description | bits |
| Frame header | 0XFF | 1bit |
| Data_H | High 8 digits of the distance data | 1bit |
| Data_L | lower 8 bits of the distance data | 1bit |
| SUM | Communication check sum | 1bit |
MAX485 output example
| Frame header | Data_H | Data_L | SUM |
| 0XFF | 0X07 | 0XA1 | 0XA7 |
Note: The checksum only retains the lower 8 bits of the accumulated value;
SUM = (frame header + Data_H + Data_L) & 0x00FF
=(0XFF + 0X07 + 0XA1)&0x00FF
=0XA7;
Distance value = Data_H*256+ Data_L=0X07A1; converted to decimal equal to 1953;
Indicates that the currently measured distance value is 1953 mm.
