360-degree omnidirectional flexible amorphous silicon thin film solar cell laser signal receiver

Abstract

The application relates to a 360-degree omnibearing flexible amorphous silicon thin film solar cell laser signal receiver. A red or green filter tube is fixedly connected with an upper receiver cap and a lower receiver cap, a height fine adjustment and fixing screw is weldedly connected with the lower receiver cap, the red or green filter tube is internally provided with a flexible amorphous silicon thin film solar cell, the flexible amorphous silicon thin film solar cell is rolled into a cylindrical shape, an inner lining sleeve is arranged in the flexible amorphous silicon thin film solar cell, a photoelectric signal conversion and processing circuit board is arranged in the inner lining sleeve, the photoelectric signal conversion and processing circuit board is connected with the flexible amorphous silicon thin film solar cell and a working state indicating lamp through a line, the lower receiver cap is provided with an inlet and outlet line opening, and the flexible amorphous silicon thin film solar cell is arranged in an even number and in a symmetrical upper and lower mode. The photoelectric cell in the application is rolled into a cylinder and can receive 360-degree light signals, the received signals have no dead angle, and 360-degree dead angle is avoided.

Description

Technical Field

[0001] This invention relates to a pulsed laser signal receiving system used in conjunction with a pulsed laser emitter (laser leveling instrument or pulsed laser marking instrument), specifically a 360° omnidirectional flexible amorphous silicon thin-film solar cell laser signal receiver, which is used in conjunction with precision leveling machinery and tools for building construction and municipal engineering. Background Technology

[0002] Laser receivers are typically used on construction sites to receive pulsed laser light emitted from a laser transmitter onto a horizontal or inclined plane. The signal is then converted into mechanical control signals or visible and audible command signals. Mechanical control signals are generally used by laser leveling machinery to precisely level concrete and mortar surfaces, while visible and audible signals are used by handheld measuring tools to accurately measure site elevations. However, traditional laser receivers generally use monocrystalline or polycrystalline silicon photovoltaic cells and photodiodes as photosensitive components. These photosensitive components have a small individual area, generally requiring multiple sets of components arranged in combination. This inevitably leads to the following drawbacks: 1. The receiver has blind spots and cannot receive signal light 360°; 2. The surface area is small; if the area where the signal light is blocked is larger than the component area, the signal light cannot be received. There is an urgent need for a laser receiver that can solve these problems. Summary of the Invention

[0003] The purpose of this invention is to provide a 360° omnidirectional flexible amorphous silicon thin-film solar cell laser signal receiver. The receiver's photosensitive component uses a flexible amorphous silicon thin-film solar cell, and the receiver can receive light signals from 360° without any dead angles.

[0004] The technical solution of this invention is:

[0005] A 360° omnidirectional flexible amorphous silicon thin-film solar cell laser signal receiver, characterized by: a working status indicator light, an upper receiver cap, a lower receiver cap, a photoelectric signal conversion and processing circuit board, an inner sleeve, a flexible amorphous silicon thin-film solar cell, a red or green filter tube, an elevation fine-tuning and fixing screw, and inlet / outlet ports. The red or green filter tube is fixedly connected to the upper and lower receiver caps. The elevation fine-tuning and fixing screw is welded to the lower receiver cap. The flexible amorphous silicon thin-film solar cell is housed inside the red or green filter tube and is rolled into a cylindrical shape. The inner sleeve is placed inside the flexible amorphous silicon thin-film solar cell and houses the photoelectric signal conversion and processing circuit board. The photoelectric signal conversion and processing circuit board is connected to the flexible amorphous silicon thin-film solar cell via a signal line and is also connected to the working status indicator light wire. The lower receiver cap has inlet / outlet ports. The flexible amorphous silicon thin-film solar cells are arranged in an even number of symmetrical layers.

[0006] The beneficial effects of this invention are:

[0007] 1. This application's laser signal receiver is the first to utilize a flexible amorphous silicon thin-film solar cell. The flexible amorphous silicon thin-film solar cell has a large surface area and a large single light-receiving surface, so even if there are obstacles such as vertical steel bars partially obstructing the light signal, it will not affect the reception. The amorphous silicon thin-film solar cell has good performance in low-light conditions, which can increase the receiving distance.

[0008] 2. The flexible amorphous silicon thin-film solar photovoltaic cell in this application can receive light signals 360° after being rolled into a tube, with no dead angles in signal reception. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the laser signal receiver of this application.

[0010] Figure 2 This is a schematic diagram of the split structure of the laser signal receiver of this application.

[0011] Figure 3 This is a circuit block diagram of the laser signal receiver of this application.

[0012] Marked in the image:

[0013] 1. Working status indicator light; 2. Receiver top cap; 3. Receiver bottom cap; 4. Photoelectric signal conversion and processing circuit board; 5. Inner sleeve; 6. Flexible amorphous silicon thin film solar cell; 7. Red or green filter tube; 8. Elevation fine adjustment and fixing screw; 9. Cable inlet / outlet. Detailed Implementation

[0014] To address the problems existing in the background technology, this application presents the invention of a 360° omnidirectional flexible amorphous silicon thin-film solar photovoltaic cell laser signal receiver. This application relates to a pulsed laser signal receiving system used in conjunction with a pulsed laser transmitter (laser leveling instrument or pulsed laser line marker). This receiver is used in conjunction with precision leveling machinery and tools in building and municipal engineering projects. The receiver converts the pulsed laser signal into mechanical control switching electrical signals or visible and audible command signals. The photosensitive component of the receiver uses a flexible amorphous silicon thin-film solar photovoltaic cell, representing the first time both domestically and internationally that a flexible amorphous silicon thin-film solar photovoltaic cell has been used in a pulsed laser signal receiver.

[0015] The present application will now be described in detail with reference to the accompanying drawings:

[0016] like Figure 1-2 As shown, a 360° omnidirectional flexible amorphous silicon thin-film solar cell laser signal receiver includes a working status indicator light 1, an upper receiver cap 2, a lower receiver cap 3, a photoelectric signal conversion and processing circuit board 4, an inner sleeve 5, a flexible amorphous silicon thin-film solar cell 6, a red or green filter tube 7, an elevation fine-tuning and fixing screw 8, and an inlet / outlet port 9. The red or green filter tube 7 is fixedly connected to the upper receiver cap 2 and the lower receiver cap 3, which can be achieved by adhesive bonding or other methods. The elevation fine-tuning and fixing screw 8 is welded to the lower receiver cap 3. The flexible amorphous silicon thin-film solar cell 6 is housed inside the red or green filter tube 7. The flexible amorphous silicon thin-film solar cell 6 is rolled into a cylindrical shape, and the inner sleeve 5 is disposed inside the flexible amorphous silicon thin-film solar cell 6. The photoelectric signal conversion and processing circuit board 4 is housed inside the inner sleeve 5. The photoelectric signal conversion and processing circuit board 4 is connected to the flexible amorphous silicon thin-film solar cell 6 via a signal line, and the photoelectric signal conversion and processing circuit board 4 is wired to the working status indicator light 1. The receiver's lower cap 3 has inlet and outlet ports. The flexible amorphous silicon thin-film solar photovoltaic cells 6 are composed of an even number of cells arranged symmetrically vertically. The flexible amorphous silicon thin-film solar photovoltaic cells used in this application can be purchased commercially. Two, four, six, or eight cells arranged symmetrically vertically can be directly purchased as needed. The photoelectric signal conversion and processing circuit board, inner sleeve, flexible amorphous silicon thin-film solar photovoltaic cells, and red or green filter tube can be sequentially wrapped and fixed, or sequentially glued and fixed.

[0017] like Figure 3As shown, the photoelectric signal conversion and processing circuit consists of an amplitude modulation circuit, a bandpass filter and amplification circuit composed of a low-frequency operational amplifier TL084 and resistors and capacitors, achieving an amplification factor of 10,000 times, a peak sampling circuit and voltage follower composed of diode 1N4148 and capacitors, and a noise reduction detector output sent to the AD converter. LM324 and LM339 are used for channel sampling, frequency selection and AGC voltage output circuits. The power supply is a positive and negative 5V regulated power supply composed of a linear voltage regulator module A0505AS-2W and filter capacitors, plus a single-chip microcomputer STC12C5A60S2 minimum system. The controller has an internal A / D converter to perform analog-to-digital conversion on the peak sampled charge.

[0018] Combined with appendix Figure 1-2 Explanation of the structure and construction of this receiver:

[0019] The laser signal receiver for this 360° omnidirectional flexible amorphous silicon thin-film solar photovoltaic cell is fixed to a leveling machine or handheld tool by an elevation fine-tuning screw to collect elevation signals and issue work instructions.

[0020] Working status indicator: A tri-color LED light is used to display the working status of the leveling machine—high, medium, and low.

[0021] Receiver top and bottom caps: Made of stainless steel, used to fix the entire receiver, and their inner sides are glued to the red or green transparent filter tube.

[0022] Photoelectric signal conversion and processing circuit board: Located at the center of the receiver, it is wrapped and fixed by an inner sleeve. It is connected to the cylindrical flexible amorphous silicon thin-film solar photovoltaic cell through the opening of the inner sleeve by a signal line to receive and process photoelectric signals. The photoelectric signal is a pulsed laser signal (frequency 8Hz~20Hz) emitted by a pulsed laser transmitter (laser leveling instrument or pulsed laser line marker). It is amplified and filtered by an amplifier and converted into a pulsed voltage signal. The signal is input to the microcontroller. The microcontroller uses its built-in analog-to-digital converter to output switch signals that can be identified by optocouplers, such as upward movement, downward movement, intermediate stop, and LED display, to control the laser leveling equipment and handheld elevation measuring tool.

[0023] Inner liner sleeve: A liner component that wraps around and fixes the photoelectric signal conversion and processing circuit board, and is used to isolate and fix the circuit board and the cylindrical flexible amorphous silicon thin film solar photovoltaic cell. It has vertical holes for signal connection channels between the photoelectric signal conversion and processing circuit board and the cylindrical flexible amorphous silicon solar photovoltaic cell, and is made of insulating materials such as plastic.

[0024] Flexible amorphous silicon thin-film solar photovoltaic cell: sandwiched between an inner liner sleeve and a red or green transparent filter tube, and fixed with adhesive, it consists of two or more sheet-shaped flexible amorphous silicon thin-film solar photovoltaic cells arranged symmetrically in a vertical manner. The central seam of the cylindrical flexible amorphous silicon thin-film solar photovoltaic cell serves as a reference line for the vertical elevation, used to receive 635nm red pulse laser and 532nm green pulse laser signals. When the pulse laser signal shines on the central seam of the two flexible amorphous silicon thin-film solar photovoltaic cells, it indicates that both silicon photovoltaic cells will generate pulse voltage. After amplification, filtering, and comparison, the precise elevation can be obtained with an error of less than ±0.15mm.

[0025] Red or green filter tube: This is part of the receiver housing and is fixed between the upper and lower caps of the receiver. It filters out stray light other than red or green signals when receiving signals.

[0026] Elevation fine-tuning and fixing screw: welded to the lower cap of the receiver, used to fix the receiver on leveling machinery or hand tools and for precise elevation adjustment.

[0027] Inlet / outlet ports: used for connecting the working power supply and outputting the control switch signal after photoelectric signal conversion and processing.

[0028] Combined with appendix Figure 3 Explain the circuit block diagram and working principle of the photoelectric signal conversion and processing circuit board of this receiver system:

[0029] 1. This invention uses a flexible amorphous silicon thin-film solar photovoltaic cell as a photosensitive element for receiving light signals; its signal conditioning circuit includes input signal amplification and filtering processing and output signal peak voltage extraction, AGC automatic signal voltage control; the data processing algorithm includes analog-to-digital conversion and data sorting median filtering processing, laser position signal judgment program and pulse frequency selection.

[0030] 2. The present invention mainly adopts the following technical solution: the flexible amorphous silicon thin film solar photovoltaic cell is rolled into a cylindrical shape to receive signals from all directions in 360 degrees, and is connected to the photoelectric signal conversion and processing circuit board through wires. The upper and lower flexible amorphous silicon thin film solar photovoltaic cells are respectively led to the amplifier input terminal through capacitors.

[0031] 3. The photoelectric signal conversion and processing circuit board includes: an amplitude modulation circuit, a bandpass filter amplifier circuit consisting of a low-frequency operational amplifier TL084 and resistors and capacitors, a peak sampling circuit, a voltage follower, LM324 and LM339 as sampling channel frequency selection and AGC voltage output, a positive and negative 5V regulated power supply consisting of a linear voltage regulator module A0505AS-2W, and a single-chip microcomputer STC12C5A60S2 minimum system.

[0032] 4. In this invention, to reduce interference and increase the received signal, an amplitude modulation filter circuit is added before the first amplification stage. The first stage amplifies the signal by 10,000 times. The second stage circuit uses a first-order low-pass filter and a peak voltage sampling circuit. The third stage amplifies the peak voltage, extracts the peak voltage, and outputs it to the microcontroller for A / D conversion in the fourth stage voltage amplification and rectification. The second output is connected to LM324 and LM339 to form a switching quantity and frequency selection circuit and an AGC voltage output circuit. To prevent the input signal from fluctuating due to different light source distances, an AGC circuit is added. The input signal gain is controlled by AO4800 to achieve signal stability. To remove low-frequency and high-frequency noise mixed in the input signal, the peak extraction circuit uses diodes and capacitors to form a simple peak sampling circuit. To prevent the charge in the capacitor from being consumed by other circuit loads, a voltage follower is added to the output of the peak sampling circuit to amplify the charge.

[0033] 5. The amplified and filtered electrical signal is processed by the microcontroller and output as switch signals such as upward movement, downward movement, and intermediate stop, and can be displayed with sound and light to simultaneously control the laser leveling equipment and the handheld elevation measuring tool.

Claims

1. A 360° omnidirectional flexible amorphous silicon thin-film solar cell laser signal receiver, characterized in that: The device includes a working status indicator light, a receiver upper cap, a receiver lower cap, a photoelectric signal conversion and processing circuit board, an inner sleeve, a flexible amorphous silicon thin-film solar cell, a red or green filter tube, an elevation fine-tuning and fixing screw, and inlet / outlet ports. The red or green filter tube is fixedly connected to the receiver upper cap and receiver lower cap. The elevation fine-tuning and fixing screw is welded to the receiver lower cap. The flexible amorphous silicon thin-film solar cell is housed inside the red or green filter tube and is rolled into a cylindrical shape. The inner sleeve is placed inside the flexible amorphous silicon thin-film solar cell and houses the photoelectric signal conversion and processing circuit board. The photoelectric signal conversion and processing circuit board is connected to the flexible amorphous silicon thin-film solar cell via a signal line and is also connected to the working status indicator light wire. The receiver lower cap has inlet / outlet ports. The flexible amorphous silicon thin-film solar cells are arranged in an even number and symmetrically arranged vertically.

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