Description:

• JSN-SR20-Y1 dual-head ranging module can provide 2 cm-500cm the non-contact distance sensing function, the ranging accuracy can reach high3mm; The module consists of ultrasonic sensor integrating receiving and dispatching and control circuit. The usage of Model 1 is the same as that of our company HC-SR04 the module aims to reveal the volume.

  
  

  This product adopts industrial grade double waterproof ultrasonic probe design, waterproof type, stable performance, Qianrong all MCU work in the market.

  
  

  Super close distance, the blind area is only 2cm. Stable ranging is the powerful basis for this product to successfully enter the market.

  
  

• - specifications and parameters:
  

  	pulse output	the serial output
  working voltage	DC :3.0-5.5V
  working current	less8mA
  the probe frequency	40kHz
  the farthest range	500cm
  recently range	2cm
  long-distant accuracy	± 1cm
  resolution	3mm
  to measure the angle	60 the degree
  the input trigger signal	1,20uS the above TTL pulse        2 and the serial port to send instructions0X55
  the output of the echo signal	output pulse width level signal, or TTL
  connection mode	3-5.5V ( the positive pole) Trig ( the control terminal)RX Echo(Output) TX GND(The negative pole of the power supply
  product Size	L48*W23*H10 mm
  operating temperature	-20℃-+ 70℃
  part color	PCB board is blue

   

  - function output mode description:

  serial Number	output mode	mode-bit electronic resistance resistance	note
  the mode 0	PWM output	suspended	the factory default
  mode 1	UART auto output	47 kΩ
  mode 2	UART  controlled output	120 kΩ	directive 0X55
  mode 3	PWM auto output	200 kΩ	cycle 200MS
  mode 4	low-power PWM output	360 kΩ
  the Mode 5	switch output	470 kΩ

   

  with line probe: The standard line length is 1 meter

  mode 0:Moode = open that is no welding. The mode as follows

  1. basic working principle:

  (1) use IO port TRIG to trigger ranging, and present high-power level signals with a minimum of 20US.

  (2) the module automatically sends 8 square waves of 40kHz to automatically detect whether there is a signal return;

  (3) if there is a signal, ECHO outputs a high level through the IO port. The duration of the high level is the time when the ultrasonic wave returns from sending it. Test distance = (high level Time * sound velocity (348M/S))/2;

  (4) after the module is triggered for distance measurement, if no ECHO is received (the reason is beyond the measured range or the probe does not face the measured object), the ECHO Port will automatically become low after 40ms, marks the end of this measurement, whether successful or not.

   

  2 Ultrasonic timing diagram:

   
  

  figure II,  ultrasonic timing

   12: Mode=47K  UART automatic output

  UART  the automatic output mode outputs the distance value (hexadecimal number) according to UART Communication Format. This mode does not need additional trigger signal, and the module can

  automatically measure once every 100ms, each measurement is completed at the TX pin output to measure the distance value.

   

  (1) pin definition

  serial Number	cement grade	pin description	note
  2	TX	UART output pins
  3	RX	no

   

  (2) communication protocol

  UART	the baud rate	check bits	data bits	stop
  TTL	9600 bps	N	8	1

   

  (3) Format Description

  the frame data	description	byte
  the frame header	fixed0XFF	1 byte
  H_DATA	the distance data of the high8 bit	1 byte
  L_DATA	the distance data of low8 bit	1 byte
  SUM	data verification	1 byte

  note: the checksum only retains the low 8 bits of the cumulative value

  For example:

  product response FF 07 A1 A7

  where check code SUM = A7 =(0x07 0x1 0Xff)& 0x00ff

  0x07  high data of distance;

  0xA1  low data for distance;

  distance value is 0 x07A1; Converted to decimal is 1953; Unit is: MM

   

  note: If the module cannot measure the data or outputs 0 beyond the distance range. After the Led is powered on, it enters the working mode and automatically flashes by 100ms.

  mode2: Mode=120K UART the controlled output

  UART  the controlled output mode outputs the measured distance value (hexadecimal number) according to UART Communication Format. This mode needs to add trigger 0x 55 signal to RX foot, and measures it every time the module receives an instruction, each measurement is completed at the TX pin output to measure the distance value. The instruction trigger cycle is larger than 60ms

  (1) pin definition

  serial Number	cement grade	pin description	note
  2	TX	UART output pins
  3	RX	UART controlled to receive a foot (Command 0X55)

  (2) communication protocol

  UART	the baud rate	check bits	data bits	stop
  TTL	9600 bps	N	8	1

  (3) Format Description

  the frame data	description	byte
  the frame header	fixed0XFF	1 byte
  H_DATA	the distance data of the high8 bit	1 byte
  L_DATA	the distance data of low8 bit	1 byte
  SUM	data verification	1 byte

       note: the checksum only retains the low 8 bits of the cumulative value

  for example:

  product response FF 07 A1 A7

  where check code SUM = A7 =(0x07 0x1 0Xff)& 0x00ff

  0x07  high data of distance;

  0xA1  low data for distance;

  distance value is 0 x07A1; Converted to decimal is 1953; Unit is: MM

   

  note: If the module cannot measure the data or outputs 0 beyond the distance range. After the Led is powered on, the command light will be on every time it is triggered. The frequency is the same as the trigger cycle.

   

  mode 3: Mode=200K high level (PWM) pulse width automatic output

  pulse width PWM with automatic output, the module automatically measures at the interval of 200ms, and outputs the high level of pulse width corresponding to the distance after the test. Calculation distance mode reference mode 1

  (1) pin definition

  serial Number	cement grade	pin description	note
  2	Trig	-
  3	Echo	high-level pulse width output

  Ø mode4:Mode=360K  low Power (PWM) high level pulse width controlled output

  in the mode of low power consumption, the closing dog of the module is disabled, and this mode is suitable for users powered by batteries. The static electricity consumption is less than 70UA, and the working ranging method is the same as that of Mode 1.

  (1) pin definition

  serial Number	cement grade	pin description	note
  2	Trig	the trigger control pin
  3	Echo	high-level pulse width output

  mode5: Mode=470K  switch output

  the job description module will set a threshold value at the factory, which defaults to 1.5 meters. The module conducts ranging once every 200ms, when the distance value of the detected target is less than the set threshold value, Echo pin output high level, the current detected distance value is greater than the set threshold value, Echo pin output low level, in order to improve the stability, the factory default is to detect the distance value of the target twice in a row is less than the set threshold value to determine the range to target of detection is less than the set threshold value; Module Echo the PIN only outputs high and low level signals without drive capability. Triode drive relay should be added during application. If there are special requirements to modify the threshold value or other settings, special instructions are required when purchasing.

  (1) pin definition

  serial Number	cement grade	pin description	note
  2	Trig	-
  3	Echo	switch the High Level Output pin	the obstacle is H, otherwise L

  - size

  

Features:

1, small size, easy to use;

2, ultra-small blind area measurement.

3, high measurement accuracy;

4, strong anti-interference;

5, integrated closed waterproof belt line probe, suitable for wet and harsh measurement occasions

Waterproof Ultrasonic Reversing Radar Probe Cable

Parameter:

1.Center frequency kHz:40.0±1.0

2.Output sound pressure dB@30cm/10V sine wave:≥105

3.Receive sensitivity dB / v / μbar:≥-82

4.-6dB Directivity deg:75±10

5.Ringing Time ms:≤0.8

6.Capacitance pf @ 120Hz 25℃:2000±10%

7.Input voltage Vp-p:140

8.Operating Temperature℃:-40~+80

9.Storage Temperature℃:-40~+85

10.Materials of the case: Aluminum

11.Type of the terminal: Connector

12.Length of the lead wire mm:2500±50

JSN-SR04T - Product introduction:

The new version of SR04T-V3.0 recently released solves the problem of blind data jumps and improves the stability of the product. JSN-SR0T4-V3.0 ultrasonic ranging module can provide 21cm-600cm non-contact distance sensing Function, ranging accuracy can be as high as 3mm; the module consists of an ultrasonic sensor and control circuit integrated with transceiver. The usage of mode one is compatible with our HC-SR04 module

Features:

1. Small size and easy to use:

2. Low voltage and low power consumption:

3. High measurement accuracy;

4. Strong anti-interference;

5. Integrated closed waterproof probe with wire, suitable for wet and harsh measurement occasions

Product parameters:

Working voltage: DC: 3.0V-5.5V

Working current: less than 8mA

Probe frequency: 40kHz

The longest range: 600cm

Recent range: 20cm

Long range accuracy: ±1cm

Resolution: 1mm

Mileage angle: 75 degrees

Input trigger signal: 1. TTL pulse above 10uS; 2. Serial port sending command 0X55

Output echo signal Output pulse width level signal, or TTL

Wiring:

3-5. 5V (power +)

Trig (Control) RX

Echo (output) TX

GND (power-)

Working temperature: -20-+70 degree

Function description: 6 modes

Kit include:

1 x Ultrasonic Module 

2 x Sensor