Analog experiment device for communication principle channel

Abstract

The utility model belongs to communication technology experimental equipment technical field especially for a kind of simulation experiment device for communication principle channel, including box, signal generation module, channel simulation module, signal receiving and analysis module, control and display module, support frame, two lifting plates, guide assembly, support adjusting assembly, multiple universal wheel and damping pivot;Signal generation module, channel simulation module, channel simulation module, signal receiving and analysis module are all set in box, and control and display module are set in the front side of box;Signal generation module is used to generate different types of communication signals;Channel simulation module is connected with signal generation module, for simulating a variety of channel characteristics.The utility model design is reasonable, not only simple and convenient operation, function is rich, can be well adapted to the use of different height operating personnel simultaneously, and the advantage that it is convenient to move.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment for communication technology, and in particular to a simulation experimental device for communication principle channels. Background Technology

[0002] In the teaching and research of communication principles, channel simulation experiments are a crucial step in understanding the performance of communication systems and the characteristics of signal transmission. Existing channel simulation experimental devices for communication principles have several shortcomings. Firstly, their functionality is relatively limited, often only able to simulate a few channel characteristics, failing to meet the increasingly complex research needs of communication systems. For example, some devices can only simulate simple signal attenuation, with limited ability to simulate characteristics such as channel frequency selectivity, noise interference, and transmission delay. Secondly, they lack scalability, making it difficult to flexibly adjust and upgrade them according to different experimental objectives and research directions. Furthermore, existing devices also fall short in terms of ease of operation, portability, adaptability to operators of different heights, and intuitive display of experimental results, hindering students' rapid mastery of communication principles and researchers' efficient research work.

[0003] Therefore, this invention proposes a simulation experimental device for communication principle channels to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings mentioned in the background section by proposing a simulation experimental device for communication principle channels.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a simulation experimental device for communication principle channels, comprising a housing, a signal generation module, a channel simulation module, a signal receiving and analysis module, a control and display module, a support frame, two lifting plates, a guide assembly, a support adjustment assembly, multiple casters and a damping shaft;

[0007] The signal generation module, channel simulation module, and signal receiving and analysis module are all housed inside the enclosure, while the control and display module is located on the front side of the enclosure.

[0008] The signal generation module is used to generate different types of communication signals;

[0009] The channel simulation module is connected to the signal generation module and is used to simulate various channel characteristics;

[0010] The signal receiving and analysis module is connected to the channel simulation module and is used to receive the signal after channel simulation and perform demodulation and analysis.

[0011] The control and display module is connected to the signal generation module, the channel simulation module, and the signal receiving and analysis module, and is used to control the operation of the entire device and display the experimental results.

[0012] Both lifting plates are mounted on the support frame and connected to the support frame via a guide assembly. The housing is movably engaged with the support frame. The damping shaft is rotatably mounted on the top side of the upper lifting plate and fixedly connected to the bottom of the housing. The support adjustment assembly is located on the side where the two lifting plates are close to each other. Multiple casters are fixedly mounted on the bottom of the support frame, and multiple support legs are fixedly mounted on the bottom side of the lower lifting plate.

[0013] Preferably, the signal generation module includes a signal generator and a waveform modulator, wherein the signal generator is used to generate a basic signal, and the waveform modulator is used to modulate the basic signal to generate different types of communication signals;

[0014] The signal generator can generate basic signals such as sine waves, square waves, and triangle waves, and the frequency and amplitude are adjustable.

[0015] The waveform modulator supports amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM) modes, and can modulate the basic signal accordingly according to experimental requirements.

[0016] Preferably, the channel simulation module includes an attenuator, a filter, a noise generator, and a delay unit. The attenuator is used to simulate signal attenuation in the channel, the filter is used to simulate the frequency selectivity of the channel, the noise generator is used to add different types of noise, and the delay unit is used to simulate signal transmission delay.

[0017] The attenuation of the attenuator can be adjusted according to experimental requirements;

[0018] The filters include low-pass filters, high-pass filters, band-pass filters, and band-stop filters, and different types of filters can be selected to simulate the frequency characteristics of different channels;

[0019] The noise generator can produce Gaussian white noise and salt-and-pepper noise, and the noise intensity is adjustable.

[0020] Preferably, the signal receiving and analysis module includes a demodulator, an oscilloscope, and a spectrum analyzer. The demodulator is used to demodulate the received signal, the oscilloscope is used to observe the time-domain waveform of the signal, and the spectrum analyzer is used to analyze the spectral characteristics of the signal.

[0021] The demodulator corresponds to the modulation mode of the waveform modulator and can demodulate AM, FM, and PM modulated signals.

[0022] Preferably, the control and display module includes an operation panel and a display screen. The operation panel is used to input control commands and set parameters for the signal generation module, channel simulation module, and signal receiving and analysis module. The display screen is used to display parameters and experimental results during the experiment.

[0023] Preferably, the guide assembly includes two L-shaped plates and two guide plates. Two guide grooves are provided on the support frame. L-shaped plates are fixedly installed on the side of the two lifting plates that are close to each other. The two L-shaped plates are slidably installed in the corresponding guide grooves. Guide plates are fixedly installed in the two guide grooves. The two L-shaped plates are slidably connected to the corresponding guide plates.

[0024] Preferably, the support adjustment assembly includes two fixed seats, two sliding seats, four support rods, a lead screw, an adjustment motor, and two upper support blocks. Fixed seats are fixedly installed on the side of the two lifting plates that are close to each other, and sliding seats are slidably installed on the side of the two lifting plates that are close to each other. Two upper support blocks are fixedly installed on the bottom side of the upper lifting plate. The same lead screw is rotatably installed on the two upper support blocks. An adjustment motor is fixedly installed on one of the upper support blocks. The output shaft of the adjustment motor is fixedly connected to the lead screw. The lead screw is threadedly connected to the upper sliding seat. Support rods are hinged to the front and rear sides of the two fixed seats. The four support rods are respectively hinged to the corresponding sliding seats.

[0025] Preferably, two lower support blocks are fixedly installed on the top side of the lower lifting plate, and the same guide rod that is slidably connected to the lower sliding seat is fixedly installed on the two lower support blocks.

[0026] Preferably, the same fixed shaft is rotatably mounted on the four support rods, and both ends of the fixed shaft are fixedly connected to the support frame.

[0027] The beneficial effects of this utility model are:

[0028] This simulation experimental device works collaboratively through multiple modules, enabling it to simulate various channel characteristics. It boasts rich functionality, with the signal generation module capable of generating different types of communication signals to meet diverse experimental needs. The channel simulation module accurately simulates various channel characteristics such as signal attenuation, frequency selectivity, noise interference, and transmission delay, breaking through the limitations of traditional devices. The signal receiving and analysis module can effectively demodulate and analyze the simulated signal, helping experimenters to deeply understand the changes after signal transmission. The control and display module facilitates parameter setting and intuitive acquisition of experimental results for operators.

[0029] In addition, the device's structural design takes mobility into account, with casters installed at the bottom to facilitate its use in different locations; the guide components, support adjustment components, and damping pivots allow the housing to be adjusted stably and flexibly in height and angle to accommodate operators of different heights, greatly improving the ease of operation and the practicality of the device, and helping to improve the efficiency and quality of teaching and research in communication principles. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of a simulation experimental device for communication principle channels proposed in this utility model;

[0032] Figure 2 for Figure 1 The main view;

[0033] Figure 3 This is a schematic diagram of the support frame, guide groove, and caster wheel components proposed in this utility model.

[0034] Figure 4 This is a schematic diagram of the support rod, sliding seat, and fixed shaft components proposed in this utility model.

[0035] Figure 5 This is a structural diagram of the lifting plate, lead screw, upper support block, adjusting motor, fixed base, L-shaped plate and guide plate parts proposed in this utility model;

[0036] Figure 6 This is a structural schematic diagram of the lower support block, guide rod, support leg, L-shaped plate, guide plate, lifting plate, and fixed seat proposed in this utility model;

[0037] Figure 7 This is a cross-sectional view of the housing portion of this utility model;

[0038] Figure 8 This is a flowchart of the present invention.

[0039] In the diagram: 1. Housing; 11. Signal generation module; 111. Signal generator; 112. Waveform modulator; 12. Channel simulation module; 121. Attenuator; 122. Filter; 123. Noise generator; 124. Delay unit; 13. Signal receiving and analysis module; 131. Demodulator; 132. Oscilloscope; 133. Spectrum analyzer; 14. Control and display module; 141. Operation panel; 142. Display screen; 2. Support frame; 21. Casters; 3. Lifting plate; 301. Support leg; 31. L-shaped plate; 32. Guide plate; 33. Damping shaft; 4. Fixed base; 41. Sliding base; 42. Support rod; 43. Lead screw; 431. Upper support block; 44. Adjustment motor; 45. Guide rod; 451. Lower support block. Detailed Implementation

[0040] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0041] Reference Figure 1-8 A simulation experimental device for communication principle channels includes a housing 1, a signal generation module 11, a channel simulation module 12, a signal receiving and analysis module 13, a control and display module 14, a support frame 2, two lifting plates 3, multiple casters 21, and a damping shaft 33.

[0042] The signal generation module 11, the channel simulation module 12, and the signal receiving and analysis module 13 are all located inside the housing 1, and the control and display module 14 is located on the front side of the housing 1.

[0043] The signal generation module 11 consists of a signal generator 111 and a waveform modulator 112. The signal generator 111 can generate basic signals such as sine waves, square waves, and triangular waves, and its frequency and amplitude can be adjusted according to experimental requirements. The waveform modulator 112 supports common modulation methods such as amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM), and can modulate the basic signals generated by the signal generator 111 accordingly to generate different types of communication signals, providing diverse input signals for subsequent channel simulation.

[0044] The channel simulation module 12 includes an attenuator 121, a filter 122, a noise generator 123, and a delay unit 124. The attenuation of the attenuator 121 is adjustable and is used to simulate the attenuation characteristics of signals when they are transmitted in an actual channel. The filter 122 includes a low-pass filter 122, a high-pass filter 122, a band-pass filter 122, and a band-stop filter 122. Different types of filters 122 can be selected according to experimental requirements to simulate the frequency selectivity of different channels. The noise generator 123 can generate Gaussian white noise and salt-and-pepper noise, and the noise intensity is adjustable. It is used to simulate noise interference in the channel. The delay unit 124 is used to simulate the transmission delay of signals in the channel, making the experiment closer to the actual communication scenario.

[0045] The signal receiving and analysis module 13 consists of a demodulator 131, an oscilloscope 132, and a spectrum analyzer 133. The demodulator 131 corresponds to the modulation mode of the waveform modulator 112 and can demodulate AM, FM, and PM modulated signals after channel simulation to recover the original signal. The oscilloscope 132 is used to observe the time-domain waveform of the signal, helping experimenters to intuitively understand the time-domain changes of the signal during transmission. The spectrum analyzer 133 is used to analyze the spectral characteristics of the signal, obtain information such as the frequency components and power distribution of the signal, and provide important basis for studying the transmission characteristics of the signal in the channel.

[0046] The control and display module 14 includes an operation panel 141 and a display screen 142 located on the front side of the housing 1. The operation panel 141 provides a human-machine interface, through which the experimenter can input control commands to set various parameters of the signal generation module 11, the channel simulation module 12, and the signal receiving and analysis module 13. The display screen 142 is used to display various parameters in real time during the experiment, such as signal frequency, amplitude, attenuation, noise intensity, etc., as well as the final experimental results, such as the demodulated signal waveform and spectrum analysis results, making the experimental process and results more intuitive and clear.

[0047] Both lifting plates 3 are mounted on the support frame 2. The support frame 2 has two guide grooves. L-shaped plates 31 are fixedly installed on the side of the two lifting plates 3 that are close to each other. The two L-shaped plates 31 are slidably installed in the corresponding guide grooves. Guide plates 32 are fixedly installed in the two guide grooves. The two L-shaped plates 31 are slidably connected to the corresponding guide plates 32, which can make the lifting plates 3 slide stably along the support frame 2 and prevent the lifting plates 3 from disengaging from the support frame 2.

[0048] The housing 1 is movably attached to the support frame 2. The damping shaft 33 is rotatably mounted on the top side of the upper lifting plate 3 and fixedly connected to the bottom of the housing 1. Fixed seats 4 are fixedly mounted on the side of the two lifting plates 3 that are close to each other. Sliding seats 41 are slidably mounted on the side of the two lifting plates 3 that are close to each other. Two upper support blocks 431 are fixedly mounted on the bottom side of the upper lifting plate 3. The same lead screw 43 is rotatably mounted on the two upper support blocks 431. An adjusting motor 44 is fixedly mounted on one of the upper support blocks 431. The output shaft of the adjusting motor 44 is fixedly connected to the lead screw 43. The lead screw 43 is threadedly connected to the upper sliding seat 41. Support rods 42 are hingedly mounted on the front and rear sides of the two fixed seats 4. The four support rods 42 are respectively hingedly mounted on the corresponding sliding seats 41, which can control the lifting and lowering of the housing 1 as needed, and at the same time provide stable support for it.

[0049] Multiple casters 21 are fixedly installed at the bottom of the support frame 2 to assist the device in moving. Multiple support legs 301 are fixedly installed on the bottom side of the lower lifting plate 3 to support the device in the working state.

[0050] In this embodiment, in order to ensure that the lower sliding seat 41 maintains stable sliding, two lower support blocks 451 are fixedly installed on the top side of the lower lifting plate 3. The same guide rod 45, which is slidably connected to the lower sliding seat 41, is fixedly installed on the two lower support blocks 451.

[0051] In this embodiment, in order to enable the support frame 2 to move upward when the control box 1 is lifted, so that the caster wheel 21 can be lifted off the ground and the multiple support legs 301 can provide stable support for the device, the same fixed shaft is rotatably mounted on the four support rods 42, and the front and rear ends of the fixed shaft are fixedly connected to the support frame 2.

[0052] The circuits, electronic components, and module mechanisms involved all employ existing technologies, which can be fully implemented by those skilled in the art, and need no further explanation. The content protected by this application does not involve any improvement to the software, circuits, or methods.

[0053] Working principle: In use, firstly, the basic signal type, frequency, and amplitude of the signal generator 111 in the signal generation module 11, as well as the modulation method of the waveform modulator 112, are set through the operation panel 141 to generate the required communication signal. Then, according to the actual simulation requirements, the attenuation amount of the attenuator 121 in the channel simulation module 12 is set on the operation panel 141, the type of the filter 122 is selected, the noise intensity of the noise generator 123 and the delay time of the delay unit 124 are adjusted to simulate the transmission of the signal in the channel. After that, the demodulator 131 of the signal receiving and analysis module 13 demodulates the signal after the channel simulation, the oscilloscope 132 observes the time domain waveform of the signal, and the spectrum analyzer 133 analyzes the signal spectrum characteristics. These experimental data and results are displayed on the display screen 142 in real time.

[0054] When it is necessary to move the device, use the casters 21 to push the device to the appropriate position. Once the device is in position, brake the casters 21 (self-locking casters can be used), which can ensure the stability of the device and facilitate the operator's experimental operation.

[0055] Since different operators have different heights, operating habits, and suitable operating heights, the device can be adjusted to a suitable operating height before the experiment. That is, when the device height needs to be adjusted, the adjustment motor 44 is started. The adjustment motor 44 drives the lead screw 43 to rotate, so that the sliding seat 41 moves on the lead screw 43. Through the support rod 42, the lifting plate 3 is raised and lowered, thereby adjusting the height of the box 1. During the height adjustment process, the guide rod 45 and the guide plate 32 ensure the stable sliding of the sliding seat 41 and the lifting plate 3. At the same time, since the four support rods 42 are rotatably installed on the same fixed shaft, and this fixed shaft is fixed on the support frame 1, the upper and lower lifting plates 3 can move in opposite directions when the height is adjusted. This not only raises the box 1 to a suitable operating height, but also allows the support leg 301 to replace the universal wheel 21 to provide support for the device.

[0056] The present invention provides a detailed description of a simulation experimental device for communication principle channels. Specific embodiments have been used to illustrate the principles and implementation methods of the present invention. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A simulation experimental device for communication principle channels, characterized in that, It includes a housing (1), a signal generation module (11), a channel simulation module (12), a signal receiving and analysis module (13), a control and display module (14), a support frame (2), two lifting plates (3), a guide assembly, a support adjustment assembly, multiple casters (21), and a damping shaft (33); The signal generation module (11), channel simulation module (12) and signal receiving and analysis module (13) are all located inside the housing (1), and the control and display module (14) is located on the front side of the housing (1); The signal generation module (11) is used to generate different types of communication signals; The channel simulation module (12) is connected to the signal generation module (11) and is used to simulate various channel characteristics; The signal receiving and analysis module (13) is connected to the channel simulation module (12) and is used to receive the signal after channel simulation and perform demodulation and analysis. The control and display module (14) is connected to the signal generation module (11), the channel simulation module (12), and the signal receiving and analysis module (13), and is used to control the operation of the entire device and display the experimental results. Both lifting plates (3) are mounted on the support frame (2), and the two lifting plates (3) are connected to the support frame (2) through the guide assembly. The housing (1) is movably attached to the support frame (2). The damping shaft (33) is rotatably mounted on the top side of the upper lifting plate (3) and fixedly connected to the bottom of the housing (1). The support adjustment assembly is located on the side where the two lifting plates (3) are close to each other. Multiple casters (21) are fixedly mounted on the bottom of the support frame (2), and multiple support legs (301) are fixedly mounted on the bottom side of the lower lifting plate (3).

2. The simulation experimental device for communication principle channels according to claim 1, characterized in that: The signal generation module (11) includes a signal generator (111) and a waveform modulator (112). The signal generator (111) is used to generate a basic signal, and the waveform modulator (112) is used to modulate the basic signal to generate different types of communication signals. The signal generator (111) can generate sine wave, square wave, and triangular wave basic signals, and the frequency and amplitude are adjustable; The waveform modulator (112) supports amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM) modes, and can modulate the basic signal accordingly according to experimental requirements.

3. The simulation experimental device for communication principle channels according to claim 1, characterized in that: The channel simulation module (12) includes an attenuator (121), a filter (122), a noise generator (123), and a delay unit (124). The attenuator (121) is used to simulate the attenuation of a signal in a channel, the filter (122) is used to simulate the frequency selectivity of the channel, the noise generator (123) is used to add different types of noise, and the delay unit (124) is used to simulate the signal transmission delay. The attenuation of the attenuator (121) can be adjusted according to experimental requirements; The filter (122) includes a low-pass filter (122), a high-pass filter (122), a band-pass filter (122), and a band-stop filter (122), and different types of filters (122) can be selected to simulate the frequency characteristics of different channels; The noise generator (123) is capable of generating Gaussian white noise and salt-and-pepper noise, and the noise intensity is adjustable.

4. The simulation experimental device for communication principle channels according to claim 1, characterized in that: The signal receiving and analysis module (13) includes a demodulator (131), an oscilloscope (132), and a spectrum analyzer (133). The demodulator (131) is used to demodulate the received signal, the oscilloscope (132) is used to observe the time-domain waveform of the signal, and the spectrum analyzer (133) is used to analyze the spectral characteristics of the signal. The demodulator (131) corresponds to the modulation mode of the waveform modulator (112) and can demodulate AM, FM and PM modulated signals.

5. The simulation experimental apparatus for communication principle channels according to claim 1, characterized in that: The control and display module (14) includes an operation panel (141) and a display screen (142). The operation panel (141) is used to input control commands and set parameters for the signal generation module (11), the channel simulation module (12), and the signal receiving and analysis module (13). The display screen (142) is used to display parameters and experimental results during the experiment.

6. The simulation experimental device for communication principle channels according to claim 1, characterized in that: The guide assembly includes two L-shaped plates (31) and two guide plates (32). Two guide grooves are provided on the support frame (2). The L-shaped plates (31) are fixedly installed on the side of the two lifting plates (3) that are close to each other. The two L-shaped plates (31) are slidably installed in the corresponding guide grooves. The guide plates (32) are fixedly installed in the two guide grooves. The two L-shaped plates (31) are slidably connected to the corresponding guide plates (32).

7. The simulation experimental device for communication principle channels according to claim 1, characterized in that: The support adjustment assembly includes two fixed seats (4), two sliding seats (41), four support rods (42), a lead screw (43), an adjustment motor (44), and two upper support blocks (431). Fixed seats (4) are fixedly installed on the side of the two lifting plates (3) that are close to each other, and sliding seats (41) are slidably installed on the side of the two lifting plates (3) that are close to each other. Two upper support blocks (431) are fixedly installed on the bottom side of the upper lifting plate (3). The same lead screw (43) is rotatably installed on the two upper support blocks (431). An adjustment motor (44) is fixedly installed on one of the upper support blocks (431). The output shaft of the adjustment motor (44) is fixedly connected to the lead screw (43). The lead screw (43) is threadedly connected to the upper sliding seat (41). Support rods (42) are hinged on the front and rear sides of the two fixed seats (4). The four support rods (42) are respectively hinged on the corresponding sliding seats (41).

8. The simulation experimental apparatus for communication principle channels according to claim 7, characterized in that: Two lower support blocks (451) are fixedly installed on the top side of the lower lifting plate (3), and the same guide rod (45) is fixedly installed on the two lower support blocks (451) and is slidably connected to the lower sliding seat (41).

9. The simulation experimental apparatus for communication principle channels according to claim 7, characterized in that: The same fixed shaft is rotatably mounted on the four support rods (42), and both ends of the fixed shaft are fixedly connected to the support frame (2).

Images