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High Sensitivity 40kHz Ultrasonic Sensor with Aluminum Case - China Suppliers and Factory Direct Offer
Technical Terms
| No. | Item | Unit | Specification |
|---|---|---|---|
| 1 | Construction | — | Open |
| 2 | Using Method | — | Transmitter / Receiver |
| 3 | Nominal Frequency | Hz | 40 ± 1K |
| 4 | Sensitivity | — | ≥ -65 V/u Mbar |
| 5 | S P L | dB | ≥ 112 (10V / 30cm / sine wave) |
| 6 | Directivity | — | 90 ± 5 deg |
| 7 | Capacitance | pF | 2100 ± 20% @ 1KHz |
| 8 | Allowable Input Voltage | Vp-p | 120 (40KHz) |
| 9 | Detectable Range | m | 10 |
| 10 | Operating Temperature | ℃ | -40 … +85 |
Drawing (Mark: T — Transmitter, R — Receiver)
Graphics for Performance Parameters
Introduction to Ultrasonic Sensors
Ultrasonic sensors are sensors developed using the characteristics of ultrasound. Ultrasonic sensors utilize the piezoelectric effect of piezoelectric ceramics. When an electric signal is applied to a piezoelectric ceramic plate, it will deform, causing the sensor to vibrate and emit ultrasonic waves. When ultrasound hits an obstacle, it reflects back and acts on the piezoelectric ceramic plate through the sensor. Based on the inverse piezoelectric effect, the ultrasound sensor generates an electrical signal output. By utilizing the principle of constant propagation speed of ultrasonic waves in the same medium, the distance between obstacles can be determined based on the time difference between transmitting and receiving signals. Ultrasonic waves will generate significant reflection echoes when they come into contact with impurities or interfaces, and Doppler effects when they come into contact with moving objects. Therefore, ultrasonic sensors are widely used in industries, civilian use, national defense, biomedicine, and other fields.
Applications
- Automotive anti-collision radar, ultrasonic ranging system, ultrasonic proximity switch.
- Remote control devices for household appliances, toys, and other electronic devices.
- Ultrasonic emission and reception devices for anti-theft and disaster prevention equipment.
- Used to drive away mosquitoes, insects, animals, etc.
Frequently Asked Questions (FAQ)
1
What is the nominal frequency of this ultrasonic sensor?
The nominal frequency of this ultrasonic sensor is 40 ± 1K Hz, which is a standard frequency widely used in proximity detection and ranging applications.
2
What is the maximum detectable range of this sensor?
The maximum detectable range of this ultrasonic sensor is 10 meters, making it suitable for a wide variety of distance measurement and obstacle detection scenarios.
3
What operating temperature range does this sensor support?
This sensor operates reliably within a temperature range of -40°C to +85°C, making it suitable for both extreme cold and high-temperature industrial environments.
4
Can this sensor be used as both a transmitter and a receiver?
Yes. This sensor supports both transmitter and receiver modes. The T/R designation indicates that separate units are available for transmitting and receiving ultrasonic signals, enabling accurate distance measurement.
5
What are the typical applications of this ultrasonic sensor?
This sensor is commonly used in automotive anti-collision radar, ultrasonic ranging systems, proximity switches, remote control devices, anti-theft systems, disaster prevention equipment, and pest-repelling devices.
6
What is the allowable input voltage for this sensor?
The allowable input voltage is 120 Vp-p at 40KHz. Exceeding this voltage may damage the piezoelectric element, so it is important to stay within the specified operating parameters.