Up to now,ultrasonic ranging sensors have become an integral part of daily life and industrial production. From liquid level detection, distance measurement to medical diagnosis, the application fields of ultrasonic distance sensors continue to expand. This article will give you an in-depth understanding of the production process of our company’s ultrasonic distance sensors.
1. The principle of ultrasonic ranging sensor
Ultrasonic ranging sensors use the inverse piezoelectric effect of piezoelectric ceramics to convert electrical energy into ultrasonic beams, and then calculate the distance by measuring the propagation time of the ultrasonic beams in the air. Since the propagation speed of ultrasonic waves is known, the distance between the two can be calculated by simply measuring the propagation time of the sound waves between the sensor and the target object.
2. The production process of ultrasonic ranging sensors
We will show you the production process of our sensors from the following points:
❶Incoming material inspection —— product material inspection, the quality of materials is inspected in accordance with international inspection standards.The inspected materials generally include electronic components (resistors, capacitors, micro-controllers, etc.), structural parts (casings, wires), and transducers. Check whether the incoming materials are qualified.
❷Outsourced patching ——- The inspected electronic components are outsourced for patching to form PCBA, which is the hardware of the sensor. The PCBA returned from patching will also undergo an inspection, mainly to check the appearance of the PCBA and whether electronic components such as resistors, capacitors, and micro-controllers are soldered or leaked.
❸Burning program ——- A qualified PCBA can be used to burn the program for the micro-controller, which is the sensor software.
❹ Post-welding —— After the program is entered,they can go to the production line for production. Mainly welding transducers and wires, and welding circuit boards with transducers and terminal wires together .
❺ Semi-finished product assembly and testing —— the modules with welded transducers and wires are assembled into one for testing. The test items mainly include distance test and echo test.
❻ Potting glue —— Modules that pass the test will enter the next step and use a glue potting machine for potting. Mainly for modules with waterproof rating.
❼Finished product testing ——-After the potted module is dried (the drying time is generally 4 hours), continue the finished product testing. The main test item is the distance test. If the test is successful, the product will be labeled and inspected for appearance before being put into storage.
Post time: Oct-08-2023