ERDI
Contact Us
Senior Engineer, Yilin
Customer Reviews
Our team has been using ERDI products. They provide excellent services and can quickly solve the technical problems of the products. In particular, the perfection of their entire industrial chain in the field of distance measurement has greatly facilitated our secondary development
We are very grateful to the technical engineers of ERDI for their on-site technical guidance at our company. Their visit has accelerated the research and development of our unmanned aerial vehicle (UAV) system. The products of ERDI have demonstrated remarkably stable performance.
We're extremely thankful to ERDI's engineers for coming to our office for detailed product training. Their expertise in communication modules has been a huge boon for our telecom project. The ERDI communication products we've incorporated into our system have shown outstanding stability, significantly enhancing the efficiency of our R & D work.
FAQ
We are a national high-tech enterprise in China. For each product, we cover the entire industrial chain, ranging from research and development to manufacturing, and then to technical service solutions.
We provide samples and will try our best to keep the fees as low as possible. If you are our regular customer, we will offer some free samples.
You can contact sales online to get latest price; Or you can leave message to us. Our sales will contact you as soon as possible. And the price we provide is normally FOB price.
We accept payments via T/T, PayPal and LC.
Our minimum order quantity is 1 pc.
Please contact sales to confirm if we still have goods in stock. If yes, we will ship goods to you in one week time after we receive your payment. If not, please confirm with sales.
Usually we ship goods to customer via express, such as DHL, FedEx, UPS, TNT or airway transportation. You can also ask us to send goods to your forwarder in China. And we will pay domestic freight.
Yes, we provide OEM/ODM service. Lead time of customized products need to be confirmed with sales. Usually we will ship products after 2 months time after we receive customer’s payment.
Our skilled and friendly salesmen are ready to answer your questions about our products and services at any time, from product selection to application. Free technical consultation services are offered by request. Our experienced engineers are here to cooperate with you on your special requirements or OEM designs.
The specifications of our products are subject to change without notice. Please ask necessary questions before you order.
Laser products are warranted to conform to ERDI’ s published specifications and to be free from defects in materials and workman-ship for a period of twelve months starting on the shipping date. ERDI will repair or replace (at our decision) ASAP without charge, any part(s) found to be defective during the warranty period.
Our warranties do not cover damages due to misuse, negligence or accidents or due to installations, repairs or adjustments not authorized by ERD.
If a problem occurs and can’t be solved by phone, fax, or email, you may return products to ERDI. Please contact us for a Return Material Authorization (RMA) number prior to shipping the laser. We’ll provide you details on shipping and customs information with the RMA number. All lasers and components should be carefully packed to avoid damage during shipment.
Pulsed Laser Rangefinder Principle
- ERDI
- No Comments
The principle of a pulsed laser rangefinder involves utilizing the characteristics of a laser beam to measure the distance between a target object and the rangefinder. Pulsed laser rangefinders typically consist of a laser, a transmitter module, a receiver, a clock, a counter, and a data processing unit.
The working principle of a pulsed laser rangefinder can be divided into two processes: transmission and reception.
In the transmission process, the laser beam generated by the laser is controlled by a recurrent control module and then emitted. The laser pulse has high instantaneous power and a short pulse width, usually as an infrared laser beam. The emitted laser beam passes through a lens or collimator to make it as parallel as possible, and it is then directed towards the measurement target.
During reception, after the laser beam is directed at the target, a portion of the laser light is scattered or reflected back to the rangefinder by the target object. This portion of the scattered laser light passes through the receiver module and is picked up by the receiver. The receiver converts the received laser signal into an electrical signal, which is then processed through amplification and filtering before being sent to the counter. The counter calculates the distance between the measurement target and the rangefinder based on the number and time interval of the received light pulses.
The received pulse signals contain signals from the target object as well as errors due to wavelength variations of the laser or other factors. To minimize these errors, pulsed laser rangefinders typically use techniques such as analog and digital filtering to process the received signal. These filtering techniques help to filter out noise and interference, thereby improving the accuracy of the rangefinder.
The clock system in a pulsed laser rangefinder accurately measures the time interval between light pulses. By measuring the time of flight of the pulses and the speed of light traveling through the air, the distance between the target object and the rangefinder can be calculated. Due to the extreme speed of laser light, pulsed laser rangefinders can perform measurements in nanoseconds.
The main advantages of pulsed laser rangefinders are their high measurement accuracy, large range, fast measurement speed, and non-destructive nature to the target object. Therefore, they are widely used in fields such as engineering measurement, construction measurement, aerospace measurement, geological exploration, robot navigation, and autonomous driving.