JSN-SR04T JSN SR04T 3.3 Waterproof Ultrasonic Module Water Proof Integrated Distance Measuring Transducer Sensor for Arduino

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

Product features:

JSN-SR04T-V3.3

1. Added temperature compensation for distance to make distance measurement more accurate.

2. Improved the interference problem of flyback DCDC power supply and made it more stable.

3. Built-in co-frequency interference filtering technology makes the signal cleaner and more stable.

4. Changeable measurement angle to meet the needs of different scenarios, such as small angle (sewer measurement) and large angle measurement of people.

JSN-SR0T4-V3.3 ultrasonic distance measurement module can provide non-contact distance sensing function of 23cm-500cm, and the ranging accuracy can reach up to 3mm

1. Small size and easy to use

2. Wide power supply range and low power consumption

3. High measurement accuracy and high resolution

4. Small detection blind area, longer distance

5. Diversified output modes, pulse width output, serial port output, switch output.

Product parameters:

Working voltage: DC: 3.0-5.5V

Working current: less than 8mA

Probe frequency: 40kHz

The farthest range: 500cm

Closest range: 23cm

Long distance accuracy: ±1cm

Resolution: 3mm

Measuring angle: 75 degrees

Input trigger signal: 1. TTL pulse above 20uS 2. Serial port sending command 0X55

Output echo signal: output pulse width level signal, or TTL

Wiring mode: 3-5.5V (power supply positive) Trig (control terminal) RX Echo (output terminal) TX GND (power supply negative)

Working temperature: -20℃—+70℃

The latest ultimate version V3.3 will be launched in 2025. This version is based on the previous one; the following improvements have been added

1: Temperature compensation of distance has been added to make distance measurement more accurate

2: The interference problem of flyback DCDC power supply has been improved to make the product more stable.

3: Built-in co-frequency interference filtering technology makes the signal cleaner and more stable.

4: The adjustable measurement angle can solve the needs of different scenarios, such as small angle (sewer measurement) and large angle measurement of people.

(We have been working hard)**** The default delivery is pulse width output

The JSN-SR0T4-V3.3 ultrasonic distance measurement module can provide non-contact distance sensing function of 21cm-500cm, and the distance measurement accuracy can reach up to 3mm; the module consists of an integrated ultrasonic sensor and a control circuit. The usage of mode 1 is compatible with our HC-SR04 module.

This product adopts an industrial-grade integrated ultrasonic probe design, waterproof, stable performance, and compatible with all MCUs on the market. 1. This module has stable performance and accurate distance measurement. It can be compared with foreign ultrasonic distance measurement modules such as SRF05 and SRF02. The module's high precision, blind area (20cm), and stable distance measurement are the strong basis for this product to successfully enter the market.

Ø Product features:

1. Small size, easy to use;

2. Low voltage, low power consumption;

3. High measurement accuracy;

4. Strong anti-interference;

5. Integrated closed waterproof wired probe, suitable for humid and harsh measurement occasions

In serial port mode, DEMO tool testing is available, as shown below

Mode 0: Moode = open means no welding is required. This mode is described as follows

1. Basic working principle:

(1) Use IO port TRIG to trigger the distance measurement and give a high level signal of at least 20us.

(2) The module automatically sends 8 40khz square waves and automatically detects whether there is a signal return;

(3) If there is a signal return, a high level is output through the IO port ECHO. The duration of the high level is the time from the ultrasonic wave emission to the return. Test distance = (high level time * sound speed (348M/S))/2;

(4) After the module is triggered for distance measurement, if no echo is received (the reason is that it exceeds the measured range or the probe is not facing the object to be measured), the ECHO port will automatically change to a low level after 40MS, indicating the end of this measurement, regardless of success or failure.

2. Ultrasonic timing diagram:

The above timing diagram shows that you only need to provide a pulse trigger signal of more than 10uS, and the module will emit 8 40kHz cycle levels and detect echoes. Once an echo signal is detected, an echo signal is output. The pulse width of the echo signal is proportional to the measured distance. Therefore, the distance can be calculated by the time interval from the transmitted signal to the received echo signal. Formula: uS/58=cm or uS/148=inch; or: distance = high level time * sound speed (340M/S) /2; It is recommended that the measurement cycle be more than 60ms to prevent the transmission signal from affecting the echo signal.

Mode=47K (or short M1 directly) UART automatic output

UART automatic output mode outputs the measured distance value (hexadecimal number) according to the UART communication format. This mode does not require an external trigger signal. The module can automatically measure once every 100ms. After each measurement, the measured distance value is output on the TX pin.

For example:

Product response FF 07 A1 A7

Where the check code SUM=A7=(0x07+0xA1+0Xff)&0x00ff

0x07 is the high-order data of the distance;

0xA1 is the low-order data of the distance;

The distance value is 0x07A1; converted to decimal is 1953; the unit is: mm

Note: The module outputs the closest distance value of about 21cm in the blind area. If the module cannot measure the data or exceeds the distance range, it outputs 0. After the LED is powered on and enters the working mode, it will automatically flash at 100MS.

Mode 2: Mode=120K (or directly short M2 bit) UART controlled output

UART controlled output mode outputs the measured distance value (hexadecimal number) according to the UART communication format. This mode requires adding a trigger command 0X55 signal to the RX pin. The module measures once each time it receives a command. Each time the measurement is completed, the measured distance value is output on the TX pin. The command trigger cycle must be greater than 60MS

For example:

Product response FF 07 A1 A7

Where the check code SUM=A7=(0x07+0xA1+0Xff)&0x00ff

0x07 is the high-order data of the distance;

0xA1 is the low-order data of the distance;

The distance value is 0x07A1; converted to decimal is 1953; the unit is: mm

Note: The module outputs the closest distance value of about 21cm in the blind area. If the module cannot measure the data or exceeds the distance range, it outputs 0. After the LED is powered on and enters the working mode, the command light will light up every time it is triggered. The frequency is the same as the trigger cycle. The light will flip to off every two triggers.

Mode 3: Mode=470K switch output

Working description The module will set a threshold value when it leaves the factory, and the default is 1.5 meters. The module measures the distance once every 200ms. When the distance value of the detected target is less than the set threshold value, the Echo pin outputs a high level. When the current detected distance value is greater than the set threshold value, the Echo pin outputs a low level. In order to improve stability, the factory default is that if the distance value of the target is less than the set threshold value for two consecutive times, it is judged that the detected target distance is less than the set threshold value; the module Echo pin only outputs high and low level signals and has no driving ability. When applied, a transistor drive relay should be added. If there are special requirements to modify the threshold value or other settings, special instructions are required when purchasing.