CN220304604U - A photoelectric non-magnetic rotation counter - Google Patents

Abstract

The utility model relates to the technical field of measuring equipment, in particular to a photoelectric non-magnetic rotation counter. The disc pointer is a rotatable disc structure. The upper surface of the disc is divided into three sector-shaped areas of different colors. The disc pointer is A transmitting tube and a receiving tube are arranged above, and a light baffle is arranged between the transmitting tube and the receiving tube. The beneficial effects of the utility model are: through the changing sequence of three colors, the number of rotation circles and the direction of rotation of the disk pointer can be detected, and at the same time, by comparing the reflection intensity of the three colors, the influence of ambient light can be eliminated.

Description

A photoelectric non-magnetic rotation counter

Technical field

The utility model relates to the technical field of measuring equipment, in particular to a photoelectric non-magnetic rotation counter.

Background technique

Under current technology, gas, water and other instruments are becoming more and more intelligent, requiring electronic collection devices. The meter is usually used to measure the flow of gas, liquid, etc. Its working principle is that the gas and liquid medium pass through the flow detection device in the meter. The flow detection device drives the transmission device, and then the transmission device drives the decimal pointer, which drives the whole pointer. The digital wheel rotates, and by reading the decimal pointer, the value of the instrument can be read with high precision. A common method is to install one or two permanent magnets on the pointer, and install a Hall or magnetoresistive sensor on or on the side of the permanent magnet. This method is simple but easily affected by external magnetic fields. Another solution is to make the pointer into a disc covered with a metal sheet, and detect the rotation of the disc through a coil or inductor. This method has strong resistance to external magnetic fields, but is still affected by strong external magnetic fields. At the same time, in NB-IoT As wireless transmission methods are increasingly used, this method is easily affected by the electromagnetic field generated by signal transmission when data is uploaded. Another commonly used photoelectric direct reading solution is to collect integer numbers, but the accuracy cannot meet the requirements of some users.

To this end, this application designs a photoelectric non-magnetic rotation counter to solve the above problems.

Contents of the invention

In order to make up for the deficiencies in the prior art, the utility model provides a photoelectric non-magnetic rotation counter, which is completely unaffected by external electromagnetic fields. At the same time, the utility model detects the relative value of light instead of the absolute value, and has strong resistance. Ability to be affected by external ambient light.

The utility model is realized through the following technical solutions:

A photoelectric non-magnetic rotating counter, including a disc pointer, characterized in that: the disc pointer is a rotatable disc structure, and the upper surface of the disc is divided into three sector-shaped areas of different colors. A transmitting tube and a receiving tube are arranged above, and a light baffle is arranged between the transmitting tube and the receiving tube.

Furthermore, in order to better realize the present utility model, the three sector-shaped areas of different colors are respectively a red area, a green area and a blue area, and the three areas are equally divided into discs, each occupying 120 degrees.

Furthermore, in order to better realize the present invention, the emission tube is composed of one full-spectrum white light-emitting diode or three closely spaced red, green, and blue light-emitting diodes.

Further, in order to better realize the present invention, the receiving tube is composed of a color sensor containing red, green, and blue signal outputs or three close red, green, and blue sensitive photodiodes.

The beneficial effects of this utility model are:

Through the changing sequence of the three colors, the number of turns and direction of rotation of the disc pointer can be detected. At the same time, by comparing the reflection intensity of the three colors, the influence of ambient light can be eliminated.

Description of drawings

Figure 1 is a schematic structural diagram of the disc pointer of the present invention;

Figure 2 is a schematic diagram of the detection principle of the present utility model.

In the picture,

1. Disc pointer, 2. Red area, 3. Green area, 4. Blue area, 5. Emitting tube, 6. Receiver tube, 7. Light baffle.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the invention provided in the appended drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without any creative work fall within the scope of protection of the present utility model.

Figure 1 and Figure 2 are a specific embodiment of the present utility model. In this embodiment, the disc pointer 1 is printed with a red area 2, a green area 3, and a blue area 4. The red area, the green area, and the blue area each occupy 120 Spend.

The emission tube 5 is composed of a full-spectrum white light-emitting diode covering the red, green, and blue color spectrum or three closely spaced red, green, and blue light-emitting diodes. The full-spectrum white light-emitting diode 5 is energized regularly, or the emission tube composed of three close red, green, and blue light-emitting diodes is energized at the same time. Different areas of the disc pointer 1 reflect back different spectrums of reflected light. By simultaneously The signal intensities of the three spectra received by the receiving tube 6 are collected. Through the relative relationship of the received signal intensities of the three color spectra, the red, green and blue areas corresponding to the disk pointer 1 can be judged. As the disk pointer 1 rotates, the number of turns and direction of rotation of the disk can be detected through the changing sequence of the red, green and blue areas.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Those of ordinary skill in the art may make other modifications or equivalent substitutions to the technical solutions of the present utility model, as long as they do not deviate from the technical solutions of the present utility model. The spirit and scope of the invention shall be covered by the claims of the present utility model.

Claims (4)

1. An optoelectronic non-magnetic rotary counter comprising a disc pointer (1), characterized in that: the disc pointer (1) is of a rotatable disc structure, the upper surface of the disc is divided into three sector areas with different colors, a transmitting tube (5) and a receiving tube (6) are arranged above the disc pointer (1), and a light barrier (7) is arranged between the transmitting tube (5) and the receiving tube (6).

2. The optoelectronic, nonmagnetic rotation counter of claim 1, wherein: the three sector areas with different colors are respectively a red area (2), a green area (3) and a blue area (4), and the three areas equally divide the disc to occupy 120 degrees respectively.

3. The optoelectronic, nonmagnetic rotation counter of claim 1, wherein: the emitting tube (5) is composed of a full spectrum white light emitting diode or three near red, green and blue light emitting diodes.

4. The optoelectronic, nonmagnetic rotation counter of claim 1, wherein: the receiving tube (6) is composed of a color sensor containing red, green and blue signal output or 3 near red, green and blue sensitive photodiodes.