Photoelectric door based on USB interface and computer sound card and experimental device

Abstract

The utility model relates to a photoelectric door and experimental facility based on USB interface and computer sound card, the photoelectric door comprises a transmitting and receiving assembly and a data transmission assembly, the transmitting and receiving assembly comprises a transmitting end and a receiving end, the transmitting end is a laser diode, the receiving end is a photosensitive diode, the data transmission assembly comprises an audio transmission line, and the audio transmission line is connected with the computer sound card. And one end of the audio transmission line is connected with the receiving end. Compared with the prior art, the device has the advantages of simple structure, convenience in material taking, low cost, flexibility in use and the like.

Description

Technical Field

[0001] The utility model relates to a physics teaching experimental device, in particular to a photoelectric door and an experimental device based on a USB interface and a computer sound card. Background Art

[0002] A photogate is a sensing device that measures the position of an object and is used to study its physical motion, such as velocity and acceleration. It is often used in physics teaching experiments to study the state of motion. Currently, data measured by a photogate is displayed using a digital timer, which is less intuitive. Furthermore, photogates require corresponding supporting instruments, which limits their flexibility and increases the production and operating costs of experimental equipment using them.

[0003] Utility model CN208206162U discloses a digital laboratory photoelectric gate sensor that uses a photoresistor as the photoelectric gate's light receiver and is equipped with an additional counter to process and display the light signal. The additional counter increases the product complexity of the photoelectric gate device and increases the cost of using the photoelectric gate. Utility Model Content

[0004] The purpose of the present invention is to provide a photoelectric gate and an experimental device based on a USB interface and a computer sound card in order to overcome the defect of the above-mentioned prior art that additional supporting instruments are required.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] According to one aspect of the utility model, a photoelectric gate based on a USB interface and a computer sound card is provided, comprising a transmitting and receiving component and a data transmission component, wherein the transmitting and receiving component comprises a transmitting end and a receiving end, wherein the transmitting end is a laser diode and the receiving end is a photosensitive diode, and the data transmission component comprises an audio transmission line, wherein one end of the audio transmission line is connected to the receiving end and the other end is connected to the sound card channel of the computer;

[0007] It also includes a support assembly, which includes a bracket, a first fixed end and a second fixed end. The first fixed end and the second fixed end are installed in parallel on the bracket. The top of the first fixed end is fixedly connected to the transmitting end, and the top of the second fixed end is fixedly connected to the receiving end.

[0008] Furthermore, it also includes a power supply component, which includes a power cord, one end of the power cord is connected to the transmitter, and the other end is connected to an external power supply through a USB interface.

[0009] Furthermore, the laser diode is a FU650AD5 series laser diode.

[0010] Furthermore, the photodiode is a PN type photodiode.

[0011] Furthermore, the PN type photodiode outputs a signal that changes in dots.

[0012] Furthermore, the bracket is a long rod with a circular cross-section, and the first fixed end and the second fixed end are both rectangular plates with a through hole at the bottom, and the through hole matches the cross-section of the bracket.

[0013] Furthermore, a ring is provided at the end of the bracket.

[0014] Furthermore, the first fixed end and the second fixed end are movably connected to the bracket.

[0015] According to another aspect of the present invention, an experimental device is provided, characterized in that the experimental device is provided with a motion sensing device, and the motion sensing device is a photoelectric gate based on a USB interface and a computer sound card.

[0016] Furthermore, the number of the photogates on the experimental device is one or more.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The utility model consists of a transmitting and receiving assembly, a data transmission assembly, a power supply assembly and a supporting assembly. The main components include a laser diode, a photosensitive diode, an audio transmission line and a power line, all of which are inexpensive and easily available components. The device has a simple structure, convenient materials and low cost. It eliminates the need for a dedicated instrument for a traditional photoelectric gate and only requires a laser diode and a laser receiving tube. The laser diode is directly powered by a USB interface, and the laser receiving diode is directly connected to the computer sound card, thus saving energy and materials.

[0019] 2. Flexible use. Users can move the position, modify the structure and change the installation method as needed. When put into experiment, the number of photoelectric gates can be equipped according to the number of data to be recorded. The laser diode and laser receiving diode are used in parallel, which simplifies the data collection method and facilitates exploratory experiments.

[0020] 3. The data is accurate. When connected to a computer, the virtual oscilloscope software on the computer (such as Audition software) can display the pulse signal, giving full play to the powerful data processing function of the computer, and the processed data accuracy can be higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the overall structure of the photoelectric gate.

[0022] Figure 2 Schematic diagram of the connection between the photoelectric gate and the computer

[0023] In the figure, 100 is a bracket, 101 is a first fixed end, 102 is a second fixed end, 201 is a transmitting end, 202 is a receiving end, 301 is an audio transmission line, and 302 is a power line. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] As an embodiment of the present invention, a photoelectric gate device is provided, such as Figure 1 As shown, it includes a transmitting and receiving component, a data transmission component, a power supply component and a supporting component.

[0026] The transmitter-receiver assembly includes a transmitter 201 and a receiver 202. Transmitter 201 is a laser diode, and receiver 202 is a PN-type photodiode. The laser diode emits a laser beam when in operation. When the laser is blocked by an object, the photodiode senses the change in light intensity and outputs an electrical signal that changes in position.

[0027] The photogate uses a computer instead of a digital timer to collect and visualize data. The computer is equipped with simulation software such as a virtual oscilloscope to collect the pulse signals generated by the photogate. This allows each pulse to be displayed intuitively on the interface, along with the intervals between pulses displayed on a timeline.

[0028] like Figure 2 As shown, the data transmission component includes an audio transmission line 301 connected to the receiving end 202. Audio transmission line 301 can be arranged along the bracket, bypassing the transmitting end 201 and connecting to the computer. The photodiode generates a varying voltage when the light changes. This varying voltage is directly connected to the computer sound card via audio transmission line 301. A virtual oscilloscope can display the changing waveform and extract relevant parameters. This photogate is directly integrated with the computer, using the sound card as the data acquisition device and the USB port as the power supply. It has high versatility and realizes visual image visualization of the electrical signal, which is highly intuitive.

[0029] The power supply component includes a USB power cord 401 connected to the transmitter. The power cord is connected to an external power source to ensure continuous and stable operation of the device. The external power source can be a computer connected to the audio transmission line 301.

[0030] The support assembly includes a bracket 100, a first fixed end 101, and a second fixed end 102. The first fixed end 101 and the second fixed end 102 are mounted on the bracket 100. The first fixed end 101 is fixedly connected to the transmitting end 201, and the second fixed end 102 is fixedly connected to the receiving end 202. This is the basic structure of the photogate, ensuring its stability and adjustability. The support assembly fixes the position of the transmitting end 201 and the receiving end 202, allowing the laser to directly enter the photosensitive tube for light sensing. The specific connection and fixing method is not limited.

[0031] As a preferred embodiment, to ensure the voltage resistance of the transmitting laser diode, the laser diode selected is model FU650AD5-C9BC9 or BD9, with an operating wavelength of 635nm and a DC voltage of 2.8-5.0V, or other types of light-emitting diodes. Power is supplied via a computer's USB port. A 5mm PN-type photodiode is used on the receiving end, forming a pair of transmitting and receiving devices with the laser diode, ensuring high sensitivity and accuracy when transmitting and receiving optical signals.

[0032] As a preferred embodiment, a virtual oscilloscope software is installed on the computer for visualizing the signals transmitted by the data transmission component. The computer software may be Audition software or other specially developed software.

[0033] As a preferred embodiment, the first fixed end 101 and the second fixed end 102 are movably connected to the bracket 100, so that the distance between the transmitting end 201 and the receiving end 202 can be flexibly adjusted as needed, thereby improving the flexibility of the photoelectric gate.

[0034] As a preferred embodiment, a circular ring is provided at the end of the bracket (100) for connecting and fixing the photoelectric gate to the experimental device.

[0035] As a preferred embodiment, the number of photoelectric gates installed using the experimental device of the present invention can be flexibly set as needed to meet different experimental requirements.

[0036] The photoelectric gate and experimental device based on a USB interface and a computer sound card proposed in this utility model can be used for experiments such as measuring gravity acceleration using a rotating liquid method, measuring the viscosity coefficient of a liquid using a falling ball method, measuring the moment of inertia of a rigid body using a three-wire pendulum method, and measuring velocity and acceleration using an air cushion guide rail. The device is easy to install and simple to use, which significantly improves the experimental efficiency.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A photoelectric gate based on a USB interface and a computer sound card, comprising a transmitting and receiving component and a data transmission component, wherein the transmitting and receiving component comprises a transmitting end (201) and a receiving end (202), characterized in that: The transmitting end (201) is a laser diode, the receiving end (202) is a photosensitive diode, and the data transmission component includes an audio transmission line (301), one end of the audio transmission line (301) is connected to the receiving end (202), and the other end is connected to the sound card channel of the computer; The invention also includes a support assembly, wherein the support assembly includes a bracket (100), a first fixed end (101) and a second fixed end (102), wherein the first fixed end (101) and the second fixed end (102) are mounted in parallel on the bracket (100), the top end of the first fixed end (101) is fixedly connected to the transmitting end (201), and the top end of the second fixed end (102) is fixedly connected to the receiving end (202).

2. A photoelectric door based on a USB interface and a computer sound card according to claim 1, characterized in that: The device also includes a power supply component, which includes a power line (401). One end of the power line (401) is connected to the transmitter (201), and the other end is connected to an external power supply via a USB interface.

3. The photoelectric door based on USB interface and computer sound card according to claim 1, characterized in that: The laser diode is a FU650AD5 series laser diode.

4. The photoelectric door based on USB interface and computer sound card according to claim 1, characterized in that: The photosensitive diode is a PN type photosensitive diode.

5. The photoelectric door based on USB interface and computer sound card according to claim 4, characterized in that: The PN type photodiode outputs a signal that changes in dot position.

6. The photoelectric door based on USB interface and computer sound card according to claim 1, characterized in that: The bracket (100) is a long rod with a circular cross-section, and the first fixed end (101) and the second fixed end (102) are both rectangular plates with through holes at the bottom, and the through holes match the cross-section of the bracket (100).

7. The photoelectric door based on USB interface and computer sound card according to claim 1, characterized in that: The end of the bracket (100) is provided with a ring.

8. The photoelectric door based on USB interface and computer sound card according to claim 1, characterized in that: The first fixed end (101) and the second fixed end (102) are movably connected to the bracket (100).

9. An experimental device, characterized in that: The experimental device is provided with a motion sensing device, and the motion sensing device is a photoelectric gate as described in any one of claims 1-8.

10. An experimental device according to claim 9, characterized in that: The number of the photoelectric gates on the experimental device is one or more.

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