Principle Introduction: The photoelectric direct reading sensor adopts the principle of photoelectric transmission encoder, treating each character wheel as a code wheel. Five infrared receiving tubes sense the level changes caused by the infrared light emitted from the transparent groove on the character wheel, forming a set of five digit numbers. After decoding, they are remotely transmitted to the system computer to display the same number as the reading value on the meter reading interface of the water meter window. The key technology of the photoelectric direct reading sensor is absolute encoding, which recognizes the position of the character wheel by encoding the digit on the character wheel0arrive9of10The position of a number; The second is to solve the problem of two adjacent related character wheels' encountering each other9cross0”High digit carry reading issue; The third is the perfect combination of mechanics and electronics, and the innovative structure of the water meter counter. The former is the foundation, while the latter is the key to the practicality of the product! The product has obtained relevant patents: ZL200810141680.3、ZL200820212544.4、ZL200820096062.7、ZL200820095833.0.

Characteristics:

■Zero error:Using unique encoding technology, the meter reading is instantly powered and the position status of the counter wheel is directly read. After decoding, it is remotely transmitted to the system computer to display the same number as the reading value in the water meter window on the meter reading interface. Difficulties and errors in interpretation occur regardless of time and environment. The system data is exactly the same as the base table data, achieving zero error real-time meter reading.

■ Passive direct reading:Usually no power supply is required, only power supply is needed at the moment of meter reading, with low failure rate and power consumption, and long service life.

■ Does not affect the measurement accuracy of the meter:The sensor part of the direct reading meter does not have mechanical contact with the counter and other devices inside the meter, which does not affect the original measurement accuracy and completely solves the problem of measurement accuracy of the direct reading meter.

■ Electromagnetic compatibility:EMCThe test meets the national standard requirements and overcomes the problem of stability of direct reading water meters affected by external electromagnetic interference; And it is not affected by backflow. The electronic module is usually in a non working state and is not affected by whether the system has experienced power outages, faults, interference, or even lightning.

■Remote control:The photoelectric direct reading sensor also has a prepaid backend and optional valve function to meet various control needs.

■ Waterproof grade:The entire table can be reachedIP65.

Solution:

Technical interface standards and parameters for the solution: