Error correction code reading character wheel device
An error correction coding and word wheel technology, which is applied in the field of remote transmission of count values, can solve the problem of difficulty in reporting errors, and achieve the effect of improving reliability.
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Embodiment 1
[0051] This embodiment discloses an error correction code reading word wheel device, such as figure 1 , figure 2 As shown, it includes a transmitting board 2, a character wheel code disc 3, a receiving board 4 and a microprocessor, and the character wheel code disc 3 is arranged between the transmitting board 2 and the receiving board 4, and the signal received on the receiving board 4 passes through The circuit is connected and transmitted to the signal conditioning circuit, and the emitting board 2 is used to emit infrared light, and the infrared light emitted by the emitting board 2 can be directed to the corresponding position on the character wheel code disc 3, and the character wheel code disc 3 passes through or Block the infrared light so that the angular displacement information is mapped onto the receiving board 4; the receiving board 4 converts the received optical signal into a level signal to be read by the microprocessor 10, and the microprocessor 10 is used for...
Embodiment 2
[0087] This embodiment discloses an error-correcting code reading character wheel device. This embodiment redesigns the angle part of the light-transmitting belt in Embodiment 1, and the rest is exactly the same as Embodiment 1, specifically:
[0088] The designed code channel graph is as follows Figure 4, in this embodiment, the character wheel code disc is still a single code track, including 3 fan-shaped hole slots, the fan-shaped hole slots are concentric with the character wheel center and on the same circumferential line, and the 3 fan-shaped hole slots are respectively the first One translucent zone 7, the second translucent zone 8 and the third translucent zone 9, and the rest are opaque parts; the radian of the first translucent zone 7 is 2π / 7, and the second translucent zone 8 The radian of the third light-transmitting zone 9 is 3π / 7, the radian of the interval between the first light-transmitting zone 7 and the second light-transmitting zone 8 is π / 7, and the radia...
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