CN204348124U - For the cable emulation network disk of the Practical training equipment that automatically closes up - Google Patents
For the cable emulation network disk of the Practical training equipment that automatically closes up Download PDFInfo
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- CN204348124U CN204348124U CN201420738041.6U CN201420738041U CN204348124U CN 204348124 U CN204348124 U CN 204348124U CN 201420738041 U CN201420738041 U CN 201420738041U CN 204348124 U CN204348124 U CN 204348124U
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- automatically closes
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Abstract
A kind of cable emulation network disk for the Practical training equipment that automatically closes up, relate to a kind of Practical training equipment, comprise signal connecting terminal, power resistor network, adjustment potentiometer, on a printed circuit, printed circuit board (PCB) is fixed on Practical training equipment enclosure of automatically closing up in described power resistor network welding; Described adjustment potentiometer is fixed on and automatically closes up on Practical training equipment shell, is wired on printed circuit board (PCB), is connected with power resistor network; Described signal connecting terminal is fixed on and automatically closes up on Practical training equipment shell, is wired on printed circuit board (PCB), is connected with power resistor network.The utility model possesses the function that dummycable resistance regulates, and under the prerequisite meeting the job requirement of indoor signal equipment, significantly reduces the cost of Practical training equipment, improves in teaching the efficiency adjusting dummycable resistance; And compact, light, be beneficial to installation, safeguard.
Description
Technical field
The utility model relates to a kind of Practical training equipment, particularly a kind of cable emulation network disk for the Practical training equipment that automatically closes up.
Background technology
Owing to being placed in Training Room for the Practical training equipment that automatically closes up of colleges and universities' railway communication signal experience system, the requirement of system thunder defending can not be considered.But this Practical training equipment also has its special demand: (1) is owing to can not lay the cable of long distance in Training Room, and when carrying out the debugging efforts of signalling arrangement communication between two railway websites, the electrical specification that the long-distance cable that sets up between website possesses must be embodied between them, the i.e. resistance of long-distance cable, makes total distance of actual cable and compensating cable be 10km.Therefore Practical training equipment must possess cable emulation network disk, for signalling arrangement provides the dummycable that can regulate resistance.(2) Standard resistance range that concrete cable emulation network disk can regulate corresponds to cable 1km to 15km length, namely 23.5 ohm to 352.5 ohm.(3) simultaneously, the focal points of the Practical training equipment that automatically closes up do not comprise cable emulation network disk, and the cable emulation network disk therefore for Practical training equipment must possess again feature that is with low cost, that conveniently regulate, be convenient to replacing.(4) in addition, Practical training equipment finite volume, cable emulation network disk also should possess the feature such as compact, lighter in weight.
And the utility model that notification number is CN201405881Y relates to a kind of lightning-protection cable simulation network disk.Railway Site uses the object of above-mentioned lightning-protection cable simulation network disk to have: 1. lightning protection; 2. as the extension of outside cable, for indoor equipment provides correct loaded impedance.But it has obvious shortcoming for real training of automatically closing up: (1) is for the Practical training equipment that automatically closes up, without the need to lightning protection function, but the said goods is owing to possessing lightning protection function, this cost of products is high, cannot spread in the middle of colleges and universities' railway signal Training Room, most school only buys several cover for demonstration.(2) in the middle of real training of automatically closing up, the using method of this equipment does not belong to emphasis and lectures content, but because its method of adjustment is comparatively complicated, often takes a lot of time, had a strong impact on real training efficiency in the middle of real training.(3) the said goods volume is comparatively large, very heavy, the most important thing is in the middle of its Practical training equipment stand that automatically closes up that cannot be embedded in the market, hinders the universal of the Practical training equipment that automatically closes up.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of not with lightning protection function and with low cost, lighter in weight, small volume, method of adjustment simply for the cable emulation network disk of the Practical training equipment that automatically closes up, to meet the demand of colleges and universities' railway communication signal specialty real training.
The technical scheme solved the problems of the technologies described above is: a kind of cable emulation network disk for the Practical training equipment that automatically closes up, it is characterized in that: comprise signal connecting terminal, power resistor network, adjustment potentiometer, on a printed circuit, printed circuit board (PCB) is fixed on Practical training equipment enclosure of automatically closing up in described power resistor network welding; Described adjustment potentiometer is fixed on and automatically closes up on Practical training equipment shell, is wired on printed circuit board (PCB), is connected with power resistor network; Described signal connecting terminal is fixed on and automatically closes up on Practical training equipment shell, is wired on printed circuit board (PCB), is connected with power resistor network.
Further technical scheme of the present utility model is: described power resistor network is divided into two groups of resistance sub-networks: for the resistance sub-network F, the resistance sub-network J for receiving that send; This resistance sub-network F, resistance sub-network J are connected with described adjustment potentiometer, signal connecting terminal respectively by wire.
Further technical scheme of the present utility model is: described resistance sub-network F is in series by high-power resistance RFA, high-power resistance RFB, described resistance sub-network J is in series by high-power resistance RJA, high-power resistance RJB, and each resistance all welds on a printed circuit.
Further technical scheme of the present utility model is: described high-power resistance RFA, high-power resistance RJA adopt RXG20-50W high power wire wound resistor, and resistance is 20 ohm; Described high-power resistance RFB and high-power resistance RJB selects RXG20-50W high power wire wound resistor, and resistance is 360 ohm.
Further technical scheme of the present utility model is: described adjustment potentiometer comprises adjustable resistance RVF, adjustable resistance RVJ, and this adjustable resistance RVF, adjustable resistance RVJ are connected in parallel to RFB and RJB two ends respectively.
Further technical scheme of the present utility model is: described adjustable resistance RVF, adjustable resistance RVJ are accurate multi-turn adjustable resistance.
Further technical scheme more of the present utility model is: described signal connecting terminal is divided into two groups: IOF terminal, IOJ terminal, and described IOF terminal is connected with the pin of high-power resistance RFA, the pin of high-power resistance RFB at the Practical training equipment enclosure wire that automatically closes up; IOJ terminal is connected with the pin of high-power resistance RJA, the pin of high-power resistance RJB at the Practical training equipment enclosure wire that automatically closes up.
Further technical scheme of the present utility model is: the described Practical training equipment shell that automatically closes up has a louvre at least.
Owing to adopting said structure, the cable emulation network disk for the Practical training equipment that automatically closes up of the utility model compared with prior art, has following beneficial effect:
1. can meet the demand of Practical training equipment to cable emulation of automatically closing up:
Because the utility model comprises signal connecting terminal, power resistor network, adjustment potentiometer, wherein power resistor network is divided into two groups of resistance sub-networks: for the resistance sub-network F, the resistance sub-network J for receiving that send; Resistance sub-network F is in series by high-power resistance RFA, high-power resistance RFB, resistance sub-network J is in series by high-power resistance RJA, high-power resistance RJB, wherein high-power resistance RFA, high-power resistance RJA adopt RXG20-50W high power wire wound resistor, and resistance is 20 ohm; High-power resistance RFB and high-power resistance RJB selects RXG20-50W high power wire wound resistor, and resistance is 360 ohm; Adjustable resistance RVF, the adjustable resistance RVJ resistance of adjustment potentiometer are chosen as 10k, and they are connected in parallel to high-power resistance RFB and high-power resistance RJB two ends respectively.Namely high-power resistance RFB, high-power resistance RJB two ends equivalent resistance can be adjusted to 347.5 ohm from 0 ohm, thus reach the object of the resistance of simulation actual cable 1km to 15km, for indoor signal equipment provides the simulation cable resistance that actual field uses, meet the demand of Practical training equipment to cable emulation of automatically closing up.
2. can facilitate, regulate resistance simply, improve the efficiency of parameter testing in real training:
Because the utility model comprises signal connecting terminal, power resistor network, adjustment potentiometer, wherein adjust potentiometer and comprise adjustable resistance RVF, adjustable resistance RVJ, this adjustable resistance RVF, adjustable resistance RVJ are connected in parallel to RFB and RJB two ends respectively.Therefore, by regulating adjustable resistance RVF, adjustable resistance RVJ, namely facilitating, regulating resistance simply thus dummycable, substantially increase the efficiency of parameter testing in real training.
3. cost of development is low, is beneficial to the construction of railway communication signal Training Room.
Because the utility model is made up of signal connecting terminal, power resistor network, a small amount of element such as adjustment potentiometer, connector etc., under the prerequisite meeting the job requirement of indoor signal equipment, significantly reduce the cost of Practical training equipment, compare the construction being conducive to railway communication signal Training Room.
4. the artifical resistance preventing maloperation to cause equals zero an ohm phenomenon, avoids frequency-shift signaling short circuit, has ensured the safety of Practical training equipment:
Because the utility model adopts 2 power resistor series connection, and the circuit form that each adjustable resistance of adjustment potentiometer is only in parallel with a wherein power resistor, avoid from structure the cable emulation network disk caused due to maloperation and to equal zero the phenomenon of ohm (frequency-shift signaling short circuit).
5. volume is little, lightweight, can embed easily in the middle of the Practical training equipment that automatically closes up:
The utility model adopts receiving end cable emulation network disk and the integrated design of transmitting terminal cable emulation network disk, and can embed Practical training equipment easily, its operation and maintenance is convenient and swift, also further increases practice-training teaching efficiency.
Below, in conjunction with the accompanying drawings and embodiments the technical characteristic of the cable emulation network disk for the Practical training equipment that automatically closes up of the utility model is further described.
Accompanying drawing explanation
Fig. 1: the structured flowchart of the cable emulation network disk for the Practical training equipment that automatically closes up of the utility model described in embodiment one.
Embodiment
Embodiment one:
A kind of cable emulation network disk for the Practical training equipment that automatically closes up, comprise signal connecting terminal, power resistor network, adjustment potentiometer, on a printed circuit, printed circuit board (PCB) is fixed on Practical training equipment enclosure of automatically closing up in described power resistor network welding; Described adjustment potentiometer is fixed on and automatically closes up on Practical training equipment shell, is wired on printed circuit board (PCB), is connected with power resistor network; Described signal connecting terminal is fixed on and automatically closes up on Practical training equipment shell, is wired on printed circuit board (PCB), is connected with power resistor network.The described Practical training equipment shell that automatically closes up has a louvre at least.
Described power resistor network is divided into two groups of resistance sub-networks: for the resistance sub-network F, the resistance sub-network J for receiving that send; Wherein resistance sub-network F is in series by high-power resistance RFA, high-power resistance RFB, and described resistance sub-network J is in series by high-power resistance RJA, high-power resistance RJB, and each resistance all welds on a printed circuit.Described high-power resistance RFA, high-power resistance RJA adopt RXG20-50W high power wire wound resistor, and resistance is 20 ohm; Described high-power resistance RFB and high-power resistance RJB selects RXG20-50W high power wire wound resistor, and resistance is 360 ohm.This high-power resistance RFA with 1., 2. number pin, high-power resistance RFB with 3., 4. number pin, high-power resistance RJA is with 1 ', 2 ' number pin, high-power resistance RJB is with 3 ', 4 ' number pin, and wherein the 2. number pin of high-power resistance RFA is connected with a 3. number pin of high-power resistance RFB and forms series circuit; 2 ' number pin of high-power resistance RJA is connected with 3 ' number pin of high-power resistance RJB and forms series circuit.
Described adjustment potentiometer comprises adjustable resistance RVF, adjustable resistance RVJ, and this adjustable resistance RVF, adjustable resistance RVJ are connected in parallel to high-power resistance RFB and high-power resistance RJB two ends respectively; This adjustable resistance RVF, adjustable resistance RVJ are accurate multi-turn adjustable resistance.
Described signal connecting terminal is divided into two groups: IOF terminal, IOJ terminal, and this IOF terminal adopts 2 pin connectors of band 1, No. 2 pins, and IOJ terminal adopts 2 pin connectors of band 3, No. 4 pins; Wherein:
No. 1 pin of IOF terminal is connected with a 1. number pin of high-power resistance RFA at the Practical training equipment enclosure wire that automatically closes up, and No. 2 pins of IOF terminal are connected with a 4. number pin of high-power resistance RFB at the Practical training equipment enclosure wire that automatically closes up;
No. 3 pins of IOJ terminal are connected with 1 ' number pin of high-power resistance RJA at the Practical training equipment enclosure wire that automatically closes up, and No. 4 pins of IOJ terminal are connected with 4 ' number pin of high-power resistance RJB at the Practical training equipment enclosure wire that automatically closes up.
Claims (8)
1. the cable emulation network disk for the Practical training equipment that automatically closes up, it is characterized in that: comprise signal connecting terminal, power resistor network, adjustment potentiometer, on a printed circuit, printed circuit board (PCB) is fixed on Practical training equipment enclosure of automatically closing up in described power resistor network welding; Described adjustment potentiometer is fixed on and automatically closes up on Practical training equipment shell, is wired on printed circuit board (PCB), is connected with power resistor network; Described signal connecting terminal is fixed on and automatically closes up on Practical training equipment shell, is wired on printed circuit board (PCB), is connected with power resistor network.
2. the cable emulation network disk for the Practical training equipment that automatically closes up according to claim 1, is characterized in that: described power resistor network is divided into two groups of resistance sub-networks: for the resistance sub-network F, the resistance sub-network J for receiving that send; This resistance sub-network F, resistance sub-network J are connected with described adjustment potentiometer, signal connecting terminal respectively by wire.
3. the cable emulation network disk for the Practical training equipment that automatically closes up according to claim 2, it is characterized in that: described resistance sub-network F is in series by high-power resistance RFA, high-power resistance RFB, described resistance sub-network J is in series by high-power resistance RJA, high-power resistance RJB, and each resistance all welds on a printed circuit.
4. the cable emulation network disk for the Practical training equipment that automatically closes up according to claim 3, is characterized in that: described high-power resistance RFA, high-power resistance RJA adopt RXG20-50W high power wire wound resistor, and resistance is 20 ohm; Described high-power resistance RFB and high-power resistance RJB selects RXG20-50W high power wire wound resistor, and resistance is 360 ohm.
5. the cable emulation network disk for the Practical training equipment that automatically closes up according to claim 1, it is characterized in that: described adjustment potentiometer comprises adjustable resistance RVF, adjustable resistance RVJ, this adjustable resistance RVF, adjustable resistance RVJ are connected in parallel to high-power resistance RFB and high-power resistance RJB two ends respectively.
6. the cable emulation network disk for the Practical training equipment that automatically closes up according to claim 5, is characterized in that: described adjustable resistance RVF, adjustable resistance RVJ are accurate multi-turn adjustable resistance.
7. the cable emulation network disk for the Practical training equipment that automatically closes up according to claim 4, it is characterized in that: described signal connecting terminal is divided into two groups: IOF terminal, IOJ terminal, described IOF terminal is connected with the pin of high-power resistance RFA, the pin of high-power resistance RFB at the Practical training equipment enclosure wire that automatically closes up; IOJ terminal is connected with the pin of high-power resistance RJA, the pin of high-power resistance RJB at the Practical training equipment enclosure wire that automatically closes up.
8. the cable emulation network disk for the Practical training equipment that automatically closes up according to the arbitrary claim of claim 1 to 7, is characterized in that: the described Practical training equipment shell that automatically closes up has a louvre at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420738041.6U CN204348124U (en) | 2014-11-29 | 2014-11-29 | For the cable emulation network disk of the Practical training equipment that automatically closes up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420738041.6U CN204348124U (en) | 2014-11-29 | 2014-11-29 | For the cable emulation network disk of the Practical training equipment that automatically closes up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204348124U true CN204348124U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420738041.6U Withdrawn - After Issue CN204348124U (en) | 2014-11-29 | 2014-11-29 | For the cable emulation network disk of the Practical training equipment that automatically closes up |
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| CN (1) | CN204348124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408987A (en) * | 2014-11-29 | 2015-03-11 | 柳州铁道职业技术学院 | Cable simulation network disk for automatic block practical training equipment |
-
2014
- 2014-11-29 CN CN201420738041.6U patent/CN204348124U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408987A (en) * | 2014-11-29 | 2015-03-11 | 柳州铁道职业技术学院 | Cable simulation network disk for automatic block practical training equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150520 Effective date of abandoning: 20171114 |