CN208189054U - Weak electric signal transmits simulation and training device - Google Patents
Weak electric signal transmits simulation and training device Download PDFInfo
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- CN208189054U CN208189054U CN201820487451.6U CN201820487451U CN208189054U CN 208189054 U CN208189054 U CN 208189054U CN 201820487451 U CN201820487451 U CN 201820487451U CN 208189054 U CN208189054 U CN 208189054U
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- 238000004088 simulation Methods 0.000 title claims abstract description 51
- 230000003993 interaction Effects 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
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- 229910052802 copper Inorganic materials 0.000 description 3
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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Abstract
The utility model is weak electric signal transmission simulation and training device, and structure includes micro controller module, human-computer interaction module, range simulation module, voltage attenuation analog module, interference simulation module, nonstandard medium analog module；Wherein, the signal input output end of human-computer interaction module is connected with the signal input output end of micro controller module；First signal output end of micro controller module is connected with the signal input part of range simulation module；The second signal output end of micro controller module is connected with the signal input part of voltage attenuation analog module；The third signal output end of micro controller module is connected with the signal input part of interference simulation module；The fourth signal output end of micro controller module is connected with the signal input part of nonstandard medium analog module.
Description
Technical field
The utility model relates to weak electric signals to transmit simulation and training device, belong to electronic information technical field.
Background technique
In practical application scene, weak electric signal (containing simulation, digital signal, power supply signal etc.) is with the increasing of transmission range
Conference decays, and external interference signal also will affect the quality of weak electric signal；But during teaching, training, due to training field
Ground and the limitation of Practical training equipment condition, usually can not true reappearance over long distances and external interference influence that weak electric signal transmit, teach
Teacher can only often explain the influence of distance and interference to weak electric signal by picture character form；" experience sense " of student be not strong not
Deep, thinking rests on theoretical knowledge point level, and result of training is unsatisfactory in terms of practical application technical ability.
Utility model content
The utility model proposes weak electric signals to transmit simulation and training device, and it is different that purpose is intended to real simulation emulation
The impact effect that far and near distance decays to weak electric signal and power supply.
The technical solution of the utility model: weak electric signal transmits simulation and training device, and structure includes microcontroller
Module, human-computer interaction module, range simulation module, voltage attenuation analog module, interference simulation module, nonstandard medium simulate mould
Block；Wherein, the signal input output end of human-computer interaction module is connected with the signal input output end of micro controller module；Micro-control
First signal output end of device module processed is connected with the signal input part of range simulation module；Second letter of micro controller module
Number output end is connected with the signal input part of voltage attenuation analog module；The third signal output end of micro controller module and dry
The signal input part for disturbing analog module is connected；The fourth signal output end of micro controller module and nonstandard medium analog module
Signal input part is connected.
The advantages of the utility model:
1) by range simulation, voltage attenuation simulation, interference simulation, the simulation of nonstandard medium, common influence light current is covered
The various aspects element of signal transmission, allows real training student is clear, intuitively experiences impacted feelings of the weak electric signal in transmission process
Condition, it is more more efficient than traditional unification, written formula briefing material；
2) breach real training place and Practical training equipment limitation, real simulation emulate different far and near distances to weak electric signal and
The impact effect of power supply decaying, simulates the influence that disturbance signal and nonstandard medium transmit signal, and trainee sees
To as a result, experience is obvious, multi-angle real training deepens trainee to the knowledge and skills Grasping level of weak electric signal transmission theory；
3) training operation is simple and convenient, needs weak electric signal transmission to be simulated to influence ginseng by human-computer interaction module setting
Number automatically controls the different analog modules such as distance, voltage attenuation, interference, nonstandard medium by micro controller module, completes corresponding
Simulation and training.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model.
Attached drawing 2 is the structural schematic diagram of range simulation module.
Attached drawing 3 is the structural schematic diagram of voltage attenuation analog module.
Attached drawing 4 is the structural schematic diagram of interference simulation module.
Attached drawing 5 is the structural schematic diagram of nonstandard medium analog module.
Attached drawing 6 is the structural schematic diagram of division module.
Specific embodiment
Weak electric signal transmits simulation and training device, and structure includes micro controller module, human-computer interaction module, range simulation
Module, voltage attenuation analog module, interference simulation module, nonstandard medium analog module；Wherein, the signal of human-computer interaction module is defeated
Enter output end to be connected with the signal input output end of micro controller module；First signal output end of micro controller module with away from
Signal input part from analog module is connected；The second signal output end of micro controller module and voltage attenuation analog module
Signal input part is connected；The third signal output end of micro controller module is connected with the signal input part of interference simulation module
It connects；The fourth signal output end of micro controller module is connected with the signal input part of nonstandard medium analog module.
The micro controller module preferably uses STM8 embedded microprocessor；Micro controller module is responsible for human-computer interaction behaviour
The parameter that work, data show, and are arranged according to human-computer interaction module, command range analog module, are done voltage attenuation analog module
The operating mode for disturbing analog module, nonstandard medium analog module makes it into scheduled weak electric signal transmission emulation mode.
The human-computer interaction module uses graphic control panel, passes through MODBUS between graphic control panel and micro controller module
Bus connection.
The human-computer interaction module using graphic control panel design, between micro controller module by MODBUS bus into
Row data interaction is, it can be achieved that parameter setting, starting, stopping etc. controlling；It is capable of the light current of real-time display present day analog simultaneously
Transmission state signal.
As shown in Fig. 2 dotted line frame, the range simulation module include eight kinds of different sizes electric resistance array and 18 tunnel
Electronic switch；The electric resistance array of eight kinds of different sizes is respectively as follows: first resistor array, second resistance array, 3rd resistor array,
4th electric resistance array, the 5th electric resistance array, the 6th electric resistance array, the 7th electric resistance array, the 8th electric resistance array；18 road electricity
Sub switch is the electronic switch of 8 tunnels parallel connection；Wherein, one end of first resistor array, one end of second resistance array, 3rd resistor
One end of array, one end of the 4th electric resistance array, the 5th electric resistance array one end, one end of the 6th electric resistance array, the 7th resistance
One end of array, one end of the 8th electric resistance array are connected with each other as weak electric signal input terminal；The other end of first resistor array,
The other end of second resistance array, the other end of 3rd resistor array, the other end of the 4th electric resistance array, the 5th electric resistance array
The other end, the other end of the 6th electric resistance array, the other end of the 7th electric resistance array, the 8th electric resistance array the other end respectively with 8
The input terminal of wherein No. 1 electronic switch in the electronic switch of road parallel connection is connected；The output end phase of the electronic switch of 8 tunnels parallel connection
Mutually and connect as weak electric signal output end；The weak electric signal input terminates normal weak electric signal, the weak electric signal output
Terminate the signal input part of weak current equipment.
The first resistor array, second resistance array, 3rd resistor array, the 4th electric resistance array, the 5th electric resistance array,
6th electric resistance array, the 7th electric resistance array, the 8th electric resistance array be respectively by the precision resistance of different size by series connection and simultaneously
Connection mode forms different effective resistance values, and it is typical remote from eight kinds between 20 meters -2000 meters to simulate weak electric signal cable respectively
Nearly difference transmission range, with the common 1mm of weak electric signal transmission cable2For RVV copper wire, the electricalresistivityρ of copper wire is under room temperature
0.0175Ωmm2/ m, according to R=ρ * L/S, then the first resistor array, second resistance array, 3rd resistor array, the 4th electricity
Hinder array, the 5th electric resistance array, the 6th electric resistance array, the 7th electric resistance array, the 8th respective effective resistance value of electric resistance array with
And corresponding weak electric signal cable transmission distance is as shown in table 1 below:
。
When work, the range simulation parameter that micro controller module is arranged according to human-computer interaction module, command range simulates mould
The closure of electronic switch respective branch on block, weak electric signal are connected from weak electric signal input terminal to weak electric signal output end, i.e. phase
When in simulating corresponding transmission range；Eight kinds of the range simulation module analog weak electric signal cable typical distances are not
Same transmission range.
The range simulation module, can also as needed the cable material of real training and line footpath it is different, in conjunction with needing mould
Quasi- transmission range is changed the effective resistance value of electric resistance array, different standalone module forms is fabricated to, according to real training
It needs to be replaced.
The voltage attenuation analog module: can work under eight kinds of different operating modes, simulation weak electric signal power supply with
Voltage attenuation situation caused by the far and near different transmission range of cable；With the common DC power supply 12V of weak current equipment, light current
For equipment operating current 1A, power delivery cable often uses 1.5mm2RVV copper conductor, the electricalresistivityρ of copper wire is under room temperature
0.0175Ωmm2/ m, according to R=ρ * L/S, U=I*R, then the corresponding pass that electrical source signal cable transmission range decays with supply voltage
System is as shown in table 2 below:
。
The voltage attenuation analog module designed accordingly is as shown in Fig. 3 dotted line frame: the voltage attenuation analog module includes
The division module and 1 No. 8 electronic switch of eight kinds of different sizes；The division module of eight kinds of different sizes is respectively as follows: first
Division module, the second division module, third division module, the 4th division module, the 5th division module, the 6th division module, the
Seven division modules, the 8th division module；1 No. 8 electronic switch are the electronic switch of 8 tunnels parallel connection；Wherein, the first partial pressure mould
The input terminal of block, the input terminal of the second division module, the input terminal of third division module, the input terminal of the 4th division module,
The input terminal of five division modules, the input terminal of the 6th division module, the input terminal of the 7th division module, the 8th division module it is defeated
Enter to hold connected with each other as power supply signal input；The output end of first division module, the output end of the second division module, third
The output end of division module, the output end of the 4th division module, the 5th division module output end, the 6th division module output
End, the output end of the 7th division module, the 8th division module output end respectively in the electronic switch in parallel with 8 tunnels wherein 1
The input terminal of road electronic switch is connected；The output end of the electronic switch of 8 tunnels parallel connection is connected with each other to be used as power supply signal output end；
Output end of the power supply signal input from commercial standard power supply；The power supply of the power supply signal output termination electrical equipment
Input terminal.
Each division module includes first resistor combination and second resistance combination；First resistor combination and second resistance
Combination constitutes bleeder circuit module according to 6 mode of attached drawing, so that with transmission range in the output end voltage of division module and table 2
Caused by " electrical equipment end virtual voltage " it is corresponding；The input terminal of the first resistor combination is as the defeated of each division module
Enter end, ground terminal of the input terminal of second resistance combination as each division module, the output end of first resistor combination and
Output end of the output end of second resistance combination collectively as each division module.
The range simulation parameter that micro controller module is arranged according to human-computer interaction module controls on voltage attenuation analog module
Electronic switch respective branch closure, reference power supply signal by division module partial pressure after, the division module of corresponding branch is defeated
Outlet is switched to electrical equipment, that is, simulating the voltage attenuation situation of corresponding transmission range.
The voltage attenuation analog module, the acceptable cable material of real training as needed and line footpath are different, in conjunction with need
Transmission range to be simulated is changed the effective resistance value of first resistor combination and second resistance combination, is fabricated to difference
Standalone module form, according to real training needs be replaced.
As shown in Fig. 4, the interference simulation module includes signal generator and electronic switch all the way；The signal occurs
The interference source type that device can simulate as needed, using commercially available reference signal generator or harmonic oscillator；The signal hair
The output signal end of raw device connects with the interference signal input terminal of electronic switch, the output end of electronic switch and normal weak electric signal
And it connects and connects collectively as weak electric signal input terminal with the signal input part of weak current equipment；When weak current equipment works normally, electronics
Switch is not turned on, then the signal input part of only normal weak electric signal input weak current equipment；When needing simulaed interference signal pair
When the influence of weak current equipment, the interference simulation parameter that micro controller module is arranged according to human-computer interaction module controls interference simulation
Electronic switch closure in module, the output signal of signal generator are superimposed the letter for being input to weak current equipment with normal weak electric signal
Number input terminal, that is, simulating influence of the interference signal to weak current equipment；The preferred model of the reference signal generator
For TEK-AFG3000, the preferred model AVE- triple-frequency harmonics generator ATsG of harmonic oscillator.
The interference source difference and interference signal intensity that the output signal of the signal generator can be simulated as needed are not
Together, the parameters such as different frequencies, amplitude, waveform are adjusted.
As shown in Fig. 5 dotted line frame；The nonstandard medium analog module include eight kinds of different sizes electric resistance array and 1
No. 8 electronic switches；The electric resistance array of eight kinds of different sizes is respectively as follows: the 9th electric resistance array, the tenth electric resistance array, eleventh resistor
Array, twelfth resistor array, thirteenth resistor array, the 14th electric resistance array, the 15th electric resistance array, the 16th Resistor Array Projector
Column；1 No. 8 electronic switch are the electronic switch of 8 tunnels parallel connection；Wherein, one end of the 9th electric resistance array, the tenth electric resistance array
One end, one end of eleventh resistor array, one end of twelfth resistor array, one end of thirteenth resistor array, the 14th
One end of electric resistance array, one end of the 15th electric resistance array, one end of the 16th electric resistance array are connected with each other as nonstandard medium
The weak electric signal input terminal of analog module；The other end, the other end of the tenth electric resistance array, eleventh resistor of 9th electric resistance array
The other end of array, the other end of twelfth resistor array, the other end of thirteenth resistor array, the 14th electric resistance array it is another
One end, the other end of the 15th electric resistance array, the 16th electric resistance array the other end respectively in the electronic switch in parallel with 8 tunnels
Wherein the input terminal of No. 1 electronic switch is connected；The output end of the electronic switch of 8 tunnels parallel connection is connected with each other to be used as nonstandard medium mould
The weak electric signal output end of quasi- module；The weak electric signal input of the nonstandard medium analog module terminates normal weak electric signal,
The signal input part of the weak electric signal output termination weak current equipment of the nonstandard medium analog module.
Nonstandard medium is mainly the non-national standard of cable in terms of weak electric signal transmission, uses inferior materials and turns out substandard goods, shows the non-fine copper of material,
Using recycling copper or not up to standard, the simplified technique of the other metal impurities of doping, line footpath etc.；According to R=ρ * L/S, the line of equal length
The electric conductivity of cable, nonstandard cable is more far short of what is expected than national standard cable；Just because of the non-national standard of nonstandard medium, without relevant quantization
Index is measured；Therefore, the nonstandard medium analog module of the utility model uses structure as shown in Figure 5, to nonstandard Jie
Matter carries out qualitative analog demenstration in terms of signal transmits influence, and trainee is made to have intuitive impression.
9th electric resistance array, the tenth electric resistance array, eleventh resistor array, twelfth resistor array, the 13rd electricity
Resistance array, the 14th electric resistance array, the 15th electric resistance array, the 16th electric resistance array are led to by the precision resistance of different size respectively
It crosses series connection and parallel way forms different effective resistance values；With the common 1mm of weak electric signal transmission cable2For RVV copper wire,
The electricalresistivityρ of pure copper wire is 0.0175 Ω mm under room temperature2/ m, it is assumed that signal transmission distance is 100 meters, described according to R=ρ * L/S
Electric resistance array 1 is national standard cable effective resistance value, the tenth electric resistance array, eleventh resistor array, twelfth resistor array, the tenth
Three electric resistance arrays, the 14th electric resistance array, the 15th electric resistance array, the 16th electric resistance array are 7 kinds of nonstandard cables pair of simulation
The effective resistance value answered, physical simulation situation are as shown in table 3 below:
。
The nonstandard medium analog module, the acceptable cable material of real training as needed and line footpath are different, in conjunction with need
Nonstandard medium to be simulated deviates national standard situation, is changed to the effective resistance value of electric resistance array, is fabricated to different independence
Modular form is replaced according to real training needs.
Claims (8)
1. weak electric signal transmits simulation and training device, it is characterized in that including micro controller module, human-computer interaction module, range simulation
Module, voltage attenuation analog module, interference simulation module, nonstandard medium analog module；Wherein, the signal of human-computer interaction module is defeated
Enter output end to be connected with the signal input output end of micro controller module；First signal output end of micro controller module with away from
Signal input part from analog module is connected；The second signal output end of micro controller module and voltage attenuation analog module
Signal input part is connected；The third signal output end of micro controller module is connected with the signal input part of interference simulation module
It connects；The fourth signal output end of micro controller module is connected with the signal input part of nonstandard medium analog module.
2. weak electric signal according to claim 1 transmits simulation and training device, it is characterized in that the micro controller module is excellent
Choosing uses STM8 embedded microprocessor.
3. weak electric signal according to claim 1 transmits simulation and training device, it is characterized in that the human-computer interaction module is adopted
With graphic control panel, connected between graphic control panel and micro controller module by MODBUS bus.
4. weak electric signal according to claim 1 transmits simulation and training device, it is characterized in that the range simulation module packet
Include the electric resistance array and 1 No. 8 electronic switch of eight kinds of different sizes；The electric resistance array of eight kinds of different sizes is respectively as follows: the first electricity
Resistance array, second resistance array, 3rd resistor array, the 4th electric resistance array, the 5th electric resistance array, the 6th electric resistance array, the 7th
Electric resistance array, the 8th electric resistance array；1 No. 8 electronic switch are the electronic switch of 8 tunnels parallel connection；Wherein, first resistor array
One end, one end of second resistance array, one end of 3rd resistor array, one end of the 4th electric resistance array, the 5th electric resistance array
One end, one end of the 6th electric resistance array, one end of the 7th electric resistance array, one end of the 8th electric resistance array it is connected with each other as weak
Electric signal input end；The other end of first resistor array, the other end of second resistance array, 3rd resistor array the other end,
The other end of 4th electric resistance array, the other end of the 5th electric resistance array, the other end of the 6th electric resistance array, the 7th electric resistance array
The other end, the 8th electric resistance array the other end wherein No. 1 electronic switch in the electronic switch in parallel with 8 tunnels respectively input terminal
It is connected；The output end of the electronic switch of 8 tunnels parallel connection is connected with each other to be used as weak electric signal output end；The weak electric signal input terminal
Connect normal weak electric signal, the signal input part of the weak electric signal output termination weak current equipment.
5. weak electric signal according to claim 1 transmits simulation and training device, it is characterized in that the voltage attenuation simulates mould
Block includes the division module and 1 No. 8 electronic switch of eight kinds of different sizes；The division module of eight kinds of different sizes is distinguished
Are as follows: the first division module, the second division module, third division module, the 4th division module, the 5th division module, the 6th partial pressure
Module, the 7th division module, the 8th division module；1 No. 8 electronic switch are the electronic switch of 8 tunnels parallel connection；Wherein,
The input terminal of one division module, the input terminal of the second division module, the input terminal of third division module, the 4th division module it is defeated
Enter end, the input terminal of the 5th division module, the input terminal of the 6th division module, the input terminal of the 7th division module, the 8th partial pressure
The input terminal of module is connected with each other to be used as power supply signal input；The output end of first division module, the second division module it is defeated
Outlet, the output end of third division module, the output end of the 4th division module, the output end of the 5th division module, the 6th partial pressure
The output end of module, the output end of the 7th division module, the 8th division module the output end electronic switch in parallel with 8 tunnels respectively
In the input terminal of wherein No. 1 electronic switch be connected；The output end of the electronic switch of 8 tunnels parallel connection is connected with each other to be believed as power supply
Number output end.
6. weak electric signal according to claim 5 transmits simulation and training device, it is characterized in that each division module packet
Include first resistor combination and second resistance combination, ground connection of the input terminal of the second resistance combination as each division module
End, output end of the output end that the output end and second resistance of first resistor combination combine collectively as each division module.
7. weak electric signal according to claim 1 transmits simulation and training device, it is characterized in that the interference simulation module packet
Include signal generator and all the way electronic switch；The signal generator is reference signal generator or harmonic oscillator；The letter
Number output signal end of generator connects with the interference signal input terminal of electronic switch, the output end of electronic switch and normal light current
Signal and connecing connects collectively as weak electric signal input terminal with the signal input part of weak current equipment.
8. weak electric signal according to claim 1 transmits simulation and training device, it is characterized in that the nonstandard medium simulates mould
Block includes the electric resistance array and 1 No. 8 electronic switch of eight kinds of different sizes；The electric resistance array of eight kinds of different sizes is respectively as follows:
Nine electric resistance arrays, the tenth electric resistance array, eleventh resistor array, twelfth resistor array, thirteenth resistor array, the 14th electricity
Hinder array, the 15th electric resistance array, the 16th electric resistance array；1 No. 8 electronic switch are the electronic switch of 8 tunnels parallel connection；Its
In, one end of the 9th electric resistance array, one end of the tenth electric resistance array, one end of eleventh resistor array, twelfth resistor array
One end, one end of thirteenth resistor array, one end of the 14th electric resistance array, one end of the 15th electric resistance array, the 16th
One end of electric resistance array weak electric signal input terminal connected with each other as nonstandard medium analog module；9th electric resistance array it is another
End, the other end of the tenth electric resistance array, the other end of eleventh resistor array, the other end of twelfth resistor array, the 13rd
The other end of electric resistance array, the other end of the 14th electric resistance array, the 15th electric resistance array the other end, the 16th electric resistance array
The other end be connected respectively with the input terminal of wherein No. 1 electronic switch in the electronic switch of 8 tunnels parallel connection；The electricity of 8 tunnels parallel connection
The output end of the sub switch weak electric signal output end connected with each other as nonstandard medium analog module.
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| CN201820487451.6U CN208189054U (en) | 2018-04-08 | 2018-04-08 | Weak electric signal transmits simulation and training device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230815A (en) * | 2018-04-08 | 2018-06-29 | 无锡职业技术学院 | Weak electric signal transmits simulation and training device |
| CN108230815B (en) * | 2018-04-08 | 2024-06-25 | 无锡职业技术学院 | Weak current signal transmission simulation training device |
-
2018
- 2018-04-08 CN CN201820487451.6U patent/CN208189054U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230815A (en) * | 2018-04-08 | 2018-06-29 | 无锡职业技术学院 | Weak electric signal transmits simulation and training device |
| CN108230815B (en) * | 2018-04-08 | 2024-06-25 | 无锡职业技术学院 | Weak current signal transmission simulation training device |
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