CN201716193U - Signal conditioning channel box - Google Patents
Signal conditioning channel box Download PDFInfo
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- CN201716193U CN201716193U CN2010202398824U CN201020239882U CN201716193U CN 201716193 U CN201716193 U CN 201716193U CN 2010202398824 U CN2010202398824 U CN 2010202398824U CN 201020239882 U CN201020239882 U CN 201020239882U CN 201716193 U CN201716193 U CN 201716193U
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- 230000003750 conditioning effect Effects 0.000 title claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims description 50
- 230000000295 complement effect Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000001629 suppression Effects 0.000 abstract description 3
- 230000001052 transient effect Effects 0.000 abstract description 3
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 35
- 238000012360 testing method Methods 0.000 description 6
- 238000012797 qualification Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model embodiment provides a signal conditioning channel box, which comprises a box body, a plurality of signal input devices, a printed circuit board and a plurality of signal input devices, wherein the box body comprises a front panel, a rear panel, lateral plates, an upper top plate and a lower bottom plate, and the lateral plates are arranged in a bilateral symmetry manner; the signal input devices arranged on the front panel of the box body are used for being connected with an external sensor so as to acquire input signals of the external sensor; the printed circuit board is arranged inside the box body, and a plurality of conditioning circuits are arranged on the printed circuit board and used for conditioning the input signals that are acquired by the signal input devices; and the signal input devices are arranged on the rear panel of the box body and used for being connected with data acquisition equipment so as to output the signals that are processed through conditioning in the conditioning circuits to the data acquisition equipment. The signal conditioning channel box can protect operating staff, expensive instruments and data from being damaged by large transient voltages, and achieve the beneficial effects of noise quieting improvement, ground loop removal and the improvement on common-mode voltage suppression at the same time.
Description
Technical field
The utility model relates to the test of rail truck trailer system, relates in particular to a kind of signal condition passage case that is used for rail truck hauling ability test macro.
Background technology
At present, a large amount of train communication systems that adopt the micro-processor controlled towing gear and the full train that distributes on electric locomotive and the motor train unit, these electronic equipments have brought many electromagnetic interference sources and sensor.Signal condition passage case in traditional rail truck hauling ability test macro is unsatisfactory for the shield effectiveness of electromagnetic interference (EMI), and not with tested vehicle on high-voltage large current equipment carry out electrical isolation, bring very big threat for the safety of operating personnel, testing tool and data.In design, its heavy profile has also limited the dirigibility of pull test, brings very inconvenience to practical application.
The utility model content
Fundamental purpose of the present utility model is to provide a kind of signal condition passage case, isolates with the analog input signal that may be subjected to voltage influence and the low-voltage backboard of measuring system.
Above-mentioned purpose of the present utility model is achieved by the following technical solution:
A kind of signal condition passage case, described signal condition passage case comprises:
Casing comprises front panel, rear panel, symmetrical side plate, upper plate and lower shoe;
A plurality of signal input apparatus are arranged on the front panel of described casing, are used for linking to each other with external sensor, to obtain the input signal of described external sensor;
Printed circuit board (PCB) is arranged in the described casing, and described printed circuit board (PCB) is provided with a plurality of modulate circuits, is used for the input signal that described a plurality of signal input apparatus obtain is nursed one's health;
A plurality of signal output apparatus are arranged on the rear panel of described casing, are used for linking to each other with data acquisition equipment, so that the signal after the described modulate circuit conditioning is outputed to described data acquisition equipment.
The signal condition passage case that provides by the utility model; may be subjected to the analog input signal of voltage influence and the low-voltage backboard of measuring system isolates; with the instrument of protection operating personnel, costliness and the harm that data are avoided the big voltage of transient state; reach the improvement noise suppression simultaneously; remove ground loop, improve the beneficial effect that common mode voltage is restrained.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute qualification of the present utility model.In the accompanying drawings:
Figure 1A is the casing front panel synoptic diagram of the signal condition passage case of the utility model embodiment;
Figure 1B is the cabinet rear panel synoptic diagram of the signal condition passage case of the utility model embodiment;
Fig. 1 C is the box side synoptic diagram of the signal condition passage case of the utility model embodiment;
Fig. 2 is the circuit theory diagrams of signal condition passage case of the embodiment of the utility model embodiment;
Fig. 3 A is the regulating circuit synoptic diagram of corresponding CV1 in the circuit diagram embodiment illustrated in fig. 2;
Fig. 3 B is the regulating circuit synoptic diagram of corresponding LT1005 in the circuit diagram embodiment illustrated in fig. 2;
Fig. 3 C is the regulating circuit synoptic diagram of corresponding LF2005 in the circuit diagram embodiment illustrated in fig. 2;
Fig. 3 D is the regulating circuit synoptic diagram of corresponding LT505 in the circuit diagram embodiment illustrated in fig. 2;
Fig. 4 is the circuit theory diagrams of signal condition passage case of another embodiment of the utility model embodiment;
Fig. 5 A is the regulating circuit synoptic diagram of corresponding CV1 in the circuit diagram embodiment illustrated in fig. 4;
Fig. 5 B is the regulating circuit synoptic diagram of corresponding LF2005 in the circuit diagram embodiment illustrated in fig. 4;
Fig. 5 C is the regulating circuit synoptic diagram of corresponding LT1005 in the circuit diagram embodiment illustrated in fig. 4;
Fig. 5 D is the regulating circuit synoptic diagram of corresponding LT505 in the circuit diagram embodiment illustrated in fig. 4.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment is clearer, below in conjunction with embodiment and accompanying drawing, embodiment is described in further details to the utility model.At this, illustrative examples of the present utility model and explanation thereof are used to explain the utility model, but not as to qualification of the present utility model.
The utility model embodiment provides a kind of signal condition passage case, this signal condition passage case comprises casing, be arranged at signal input apparatus, signal output apparatus on this casing, and be arranged at the printed circuit board (PCB) in this casing, below will be illustrated respectively.
In the present embodiment, the casing of this signal condition passage case includes front panel, rear panel, symmetrical side plate, upper plate and lower shoe.
Shown in Figure 1A, Figure 1A is the synoptic diagram of the front panel of this casing, on this front panel, be provided with a plurality of signal input apparatus (comprising socket and switch), these a plurality of signal input apparatus can external external sensor, obtain sensor input signal from this external sensor, so that this input signal is nursed one's health.In one embodiment, a corresponding class external sensor a plurality of signal input apparatus of different ranges are set, and the range display lamp that is provided with on the front panel by this casing is shown, be used for when switching the range of sensor, carrying out corresponding prompting by the demonstration of this range display lamp.Please refer to Figure 1A, for example corresponding CV1/CV4 voltage sensor is provided with the signal input apparatus of 9 different ranges such as 11,12,13,21,22,23,31,32,33 altogether; Corresponding LF2005/LT1005 current sensor is provided with the signal input apparatus of 9 different ranges such as 41,42,43,51,52,53,61,62,63 altogether; Corresponding LT505 current sensor is provided with the signal input apparatus of 6 different ranges such as 71,72,73,81,82,83, altogether so that adapt to dissimilar external sensors.Below just illustrate, present embodiment does not limit the type and the range of the sensor.
Shown in Figure 1B, Figure 1B is the synoptic diagram of the rear panel of this casing, on this rear panel, be provided with a plurality of signal output apparatus, these a plurality of signal output apparatus can the external data collecting device, to output to this data acquisition equipment through the signal after this signal condition passage case conditioning, so that the signal after this conditioning is carried out respective handling.In one embodiment, switch, ground connection socket, supply socket etc. can also be set on the rear panel of this casing, supply socket is used for external power supply, and for example, the 220V AC power is given this signal condition passage case power supply.Wherein, the insulation voltage between this supply socket and the casing can be 1500 volts, and the insulation voltage between signal wire and the casing can be 500 volts.
Shown in Fig. 1 C, Fig. 1 C is the synoptic diagram of the side plate of this casing, and each signal condition passage case comprises two left-right symmetric side plates.In one embodiment, on the side plate of this casing ventilation unit can be set, fan for example is so that heat radiation.
In addition, the upper plate of this casing can be provided with ventilating opening as the top cover of this signal condition passage case.The lower shoe of this casing can be provided with base or table pin, to support whole signal condition passage case as the bottom of this signal condition passage case.
Wherein, this casing can adopt High-Hardness Cast Iron; to bear high-intensity compression shock; protection internal circuit and power supply are not subjected to the influence of outside high strength compression shock; guarantee the input signal of this signal condition passage case simultaneously, for example voltage input signal and/or current input signal and cabinet, shielding, the earth insulate each other.
In the present embodiment, signal input apparatus can be for a plurality of, are arranged on the front panel of casing of this signal condition passage case, and shown in Figure 1A, this signal input apparatus is used for linking to each other with external sensor, to obtain the input signal of described external sensor.
Wherein, this signal input apparatus can be an aviation plug, external sensor connects this signal condition passage case by this aviation plug, its input signal enters this passage case inside by the shielding line transmission, be connected by the pcb board of winding displacement, below will be illustrated this by circuit diagram with this passage case inside.
Wherein, this external sensor can be a current sensor, also can be voltage sensor, present embodiment not with this as restriction.
In the present embodiment, signal output apparatus can be for a plurality of, are arranged on the rear panel of casing of this signal condition passage case, shown in Figure 1B, this signal output apparatus is used for linking to each other with data acquisition equipment, so that the signal after this signal condition passage case conditioning is outputed to described data acquisition equipment.
Wherein, the data acquisition equipment here can be a power analyzer, also can be other data acquisition equipments, present embodiment not with this as restriction.
In the present embodiment, printed circuit board (PCB) is provided with a plurality of modulate circuits, and its conversion of signals that is used for the external sensor input is the voltage signal that is fit to data acquisition equipment.Wherein, the corresponding signal input apparatus of each modulate circuit, the signal that the external sensor that these a plurality of modulate circuits are used for that described a plurality of signal input apparatus are obtained is imported is nursed one's health, and carries out data acquisition or processing to output to data acquisition equipment by described signal output apparatus.Wherein, the circuit on this printed circuit board (PCB) adopts the double layer screen measure interference-free with the protection test signal.
Fig. 2 is the circuit theory diagrams of signal condition passage case of an embodiment of present embodiment, this signal condition passage case is applicable to that model is the power analyzer of D6266, also be, signal condition passage case by present embodiment is nursed one's health the signal of external sensor input, the power analyzer that can offer model and be D6266 carries out power analysis, simultaneously, this signal condition passage case is supported the output channel of IMC data acquisition system (DAS), so that signal is exported side by side.
Please refer to Fig. 2, in the present embodiment, port one～port 9 is the interface circuit of corresponding voltage sensor CV1 and CV4, port one 0～port one 8 is the interface circuit of corresponding current sensor LT1005 and LF2005, port one 9～port 24 is the interface circuit of corresponding current sensor LT505, these interface circuits are arranged between a plurality of signal input apparatus and the regulating circuit 201～224, are used to obtain the signal of signal input apparatus input; 201～224 modulate circuits for the corresponding port one～port 24 of difference are arranged between interface circuit and the lead-in clamp 225; 225 is the lead-in clamp of respective signal input media, connects modulate circuit 201～224; 226 is the output wiring terminal of respective signal output unit, connects signal output apparatus; 227 is the power circuit of this signal condition passage case, the external sensor power supply that is used to this signal condition passage case and links to each other with this signal condition passage case, wherein, the passage case of present embodiment can be supplied stable 15～24V direct supply for sensor, and interference is not brought in the signal.
In the present embodiment, modulate circuit 201～224 can comprise a commutation circuit and at least one regulating circuit, wherein, commutation circuit is used for the type according to the external sensor that links to each other with signal input apparatus, switches the regulating circuit that is complementary with described external sensor; Regulating circuit is used for the signal of external sensor input is regulated.
Wherein, this commutation circuit can realize by change-over switch, and this regulating circuit can realize by a resistance or a plurality of parallel resistance, present embodiment not with this as restriction.Wherein, these resistance can be high-precision divider resistances, and so that the current signal of input is nursed one's health, the power analyzer that output voltage signal offers D6266 carries out power analysis.Below be illustrated by way of example.
Please continue with reference to Fig. 2, in the modulate circuit 201～209 of corresponding port one～port 9, comprise change-over switch S11～S13, a S21～S23, S31～S33 respectively, be used between CV1 and CV4, switching.With the port one is example, when the external sensor that inserts is CV4, and the path between the conducting 111 and 112 then, the resistance of the regulating circuit of this moment is 0, does not promptly have resistance; When the external sensor that inserts is CV1, the path between the conducting 111 and 113 then, the regulating circuit of this moment is a resistance R 1.Fig. 3 A is the synoptic diagram to modulate circuit that should CV1.
Please continue with reference to Fig. 2, in the modulate circuit 210～218 of corresponding port 10～port one 8, comprise change-over switch S41～S43, a S51～S53, S61～S63 respectively, be used between LT1005 and LF2005, switching.With port one 0 is example, when the external sensor that inserts is LT1005, and the path between the conducting 411 and 412 then, the regulating circuit of this moment is parallel resistor R1～resistance R 4; When the external sensor that inserts is LF2005, the path between the conducting 411 and 413 then, the regulating circuit of this moment is parallel resistor R1～resistance R 6.Fig. 3 B is the synoptic diagram to modulate circuit that should LT1005.Fig. 3 C is the synoptic diagram to modulate circuit that should LF2005.
Please continue with reference to Fig. 2, in the modulate circuit 219～224 of corresponding port 19～port 24, comprise change-over switch S71～S73, a S81～S83 respectively, be used for the regulating circuit of LT505 is switched.With port 24 is example, when the external sensor that inserts is LT505, and the path between can conducting 831 and 832, the regulating circuit of this moment is a resistance R 1; Path between also can conducting 831 and 833, the regulating circuit of this moment is parallel resistor R37～resistance R 38.Fig. 3 D is the synoptic diagram to modulate circuit that should LT505.
Fig. 4 is the circuit theory diagrams of signal condition passage case of another embodiment of present embodiment, this signal condition passage case is applicable to that model is the power analyzer of N5000, also be, signal condition passage case by present embodiment is nursed one's health the signal of external sensor input, the power analyzer that can offer model and be N5000 carries out power analysis, simultaneously, this signal condition passage case is supported the output channel of IMC data acquisition system (DAS), so that with signal output in parallel.
Please refer to Fig. 4, in the present embodiment, port one～port 9 is the interface circuit of corresponding voltage sensor CV1 and CV4, port one 0～port one 2 is the interface circuit of corresponding current sensor LF2005, port one 3～port one 8 is the interface circuit of corresponding current sensor LT1005, port one 9～port 24 is the interface circuit of corresponding current sensor LT505, these interface circuits are arranged between a plurality of signal input apparatus and the regulating circuit 401～424, are used to obtain the signal of signal input apparatus input; 401～424 modulate circuits for the corresponding port one～port 24 of difference, wherein, modulate circuit 401～409 is arranged between interface circuit and lead-in clamp 425 and the output wiring terminal 429, modulate circuit 410～412 is arranged between lead-in clamp 426 and the output wiring terminal 430, modulate circuit 413～418 is arranged between lead-in clamp 427 and the output wiring terminal 431, and modulate circuit 419～424 is arranged between lead-in clamp 428 and the output wiring terminal 432; 425～428 is the lead-in clamp of respective signal input media, connects modulate circuit 201～224 respectively; 429～432 is the output wiring terminal of respective signal output unit, connects signal output apparatus; 433 is the power circuit of this signal condition passage case, the external sensor power supply that is used to this signal condition passage case and links to each other with this signal condition passage case.
In the present embodiment, modulate circuit 401～409 can comprise a commutation circuit and at least one regulating circuit, and modulate circuit 410～424 can only comprise a regulating circuit.Wherein, commutation circuit is used for the type according to the external sensor that links to each other with signal input apparatus, switches the regulating circuit that is complementary with described external sensor; Regulating circuit is used for the signal of external sensor input is regulated.
Wherein, this commutation circuit can realize by change-over switch, and this regulating circuit can realize by a resistance or a plurality of parallel resistance, present embodiment not with this as restriction.Wherein, these resistance can be high-precision divider resistances, and so that the signal of input is nursed one's health, the power analyzer that the voltage signal of the suitable power analyzer N5000 of output offers N5000 carries out power analysis.Below be illustrated by way of example.
Please continue with reference to Fig. 4, in the modulate circuit 401～409 of corresponding port one～port 9, comprise change-over switch S11～S13, a S21～S23, S31～S33 respectively, be used between CV1 and CV4, switching.With the port one is example, when the external sensor that inserts is CV4, and the path between the conducting 111 and 112 then, the resistance of the regulating circuit of this moment is 0, does not promptly have resistance; When the external sensor that inserts is CV1, the path between the conducting 111 and 113 then, the regulating circuit of this moment is a resistance R 1.Fig. 5 A is the synoptic diagram to modulate circuit that should CV1.
Please continue with reference to Fig. 4, in the modulate circuit 410～412 of corresponding port 10～port one 2, comprise a regulating circuit respectively, this regulating circuit is made of parallel resistance.With port one 0 is example, when the external sensor that inserts is LF2005, then the input signal of this external sensor input enters by the interface circuit of port one 0, and this moment, regulating circuit was R37～R40 in parallel, and this input signal is regulated back output through this regulating circuit.Fig. 5 B is the synoptic diagram to modulate circuit that should LF2005.
Please continue with reference to Fig. 4, in the modulate circuit 413～418 of corresponding port 13～port one 8, comprise a regulating circuit respectively, this regulating circuit is made of parallel resistor.With port one 3 is example, when the external sensor that inserts is LT1005, then the input signal of this external sensor input enters by the interface circuit of port one 3, and this moment, regulating circuit was R1～R2 in parallel, and this input signal is exported through after the adjusting of this regulating circuit.Fig. 5 C is the synoptic diagram to modulate circuit that should LT1005.
Please continue with reference to Fig. 4, in the modulate circuit 419～424 of corresponding port 19～port 24, comprise a regulating circuit respectively, this regulating circuit is made of parallel resistor, with port one 9 is example, and when the external sensor that inserts was LT505, then the input signal of this external sensor input entered by the interface circuit of port one 9, this moment, regulating circuit was R31～R32 in parallel, and this input signal is exported through after the adjusting of this regulating circuit.Fig. 5 D is the synoptic diagram to modulate circuit that should LT505.
Signal condition passage case by present embodiment; may be subjected to the analog input signal of voltage influence and the low-voltage backboard of measuring system; for example the circuit board of data acquisition equipment is isolated; can protect the instrument of operating personnel, costliness and the harm that data are avoided the big voltage of transient state like this, can also improve noise suppression, remove ground loop, improve the common mode voltage supression.In addition, because the current channel of power analyzer D6266 adopts the external shunt device input of BNC connector, the passage case of present embodiment can be nursed one's health current signal, convert the voltage signal that is fit to power analyzer D6266 to, and for the tested object of the electric current and voltage that adapts to different sizes, range that can the conditioning signal input media.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a signal condition passage case is characterized in that, described signal condition passage case comprises:
Casing comprises front panel, rear panel, symmetrical side plate, upper plate and lower shoe;
A plurality of signal input apparatus are arranged on the front panel of described casing, are used for linking to each other with external sensor, to obtain the input signal of described external sensor;
Printed circuit board (PCB) is arranged in the described casing, and described printed circuit board (PCB) is provided with a plurality of modulate circuits, is used for the input signal that described a plurality of signal input apparatus obtain is nursed one's health;
A plurality of signal output apparatus are arranged on the rear panel of described casing, are used for linking to each other with data acquisition equipment, so that the signal after the described modulate circuit conditioning is outputed to described data acquisition equipment.
2. signal condition passage case according to claim 1 is characterized in that described printed circuit board (PCB) also is provided with:
A plurality of interface circuits connect described a plurality of signal input apparatus respectively;
Lead-in clamp links to each other with described a plurality of interface circuits;
Output wiring terminal links to each other with described a plurality of signal output apparatus with described lead-in clamp.
3. signal condition passage case according to claim 2 is characterized in that:
Described a plurality of modulate circuit is arranged between described a plurality of interface circuit and the described lead-in clamp;
Wherein, each modulate circuit comprises:
A commutation circuit is used for the type according to the external sensor that links to each other with described interface circuit, switches the regulating circuit that is complementary with described external sensor;
At least one regulating circuit is used for the signal of described external sensor input is regulated.
4. signal condition passage case according to claim 2 is characterized in that:
Described a plurality of modulate circuit is arranged between described lead-in clamp and the described output wiring terminal;
Wherein, each modulate circuit comprises:
At least one regulating circuit is used for the signal of described external sensor input is regulated.
5. signal condition passage case according to claim 4 is characterized in that, described each modulate circuit also comprises:
A commutation circuit is used for the type according to the external sensor that links to each other with described interface circuit, switches the regulating circuit that is complementary with described external sensor.
6. according to claim 3 or 4 or 5 described signal condition passage casees, it is characterized in that:
Described commutation circuit is a change-over switch;
Described regulating circuit is a resistance or a plurality of parallel resistance.
7. signal condition passage case according to claim 1 is characterized in that, also is provided with on the described printed circuit board (PCB):
Power circuit links to each other with described a plurality of signal input apparatus, is used for described signal condition passage case and the external sensor power supply that links to each other with described a plurality of signal input apparatus.
8. signal condition passage case according to claim 1 is characterized in that:
The material of described casing is a High-Hardness Cast Iron, is used to protect described printed circuit board (PCB) and exterior insulation and protects internal circuit and power supply is not subjected to the influence of outside high strength compression shock.
9. signal condition passage case according to claim 1 is characterized in that described external sensor comprises current sensor and/or voltage sensor.
10. signal condition passage case according to claim 1 is characterized in that described data acquisition equipment is a power analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202398824U CN201716193U (en) | 2010-06-18 | 2010-06-18 | Signal conditioning channel box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202398824U CN201716193U (en) | 2010-06-18 | 2010-06-18 | Signal conditioning channel box |
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| Publication Number | Publication Date |
|---|---|
| CN201716193U true CN201716193U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202398824U Expired - Lifetime CN201716193U (en) | 2010-06-18 | 2010-06-18 | Signal conditioning channel box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105873392A (en) * | 2016-04-29 | 2016-08-17 | 华中科技大学 | Signal processing circuit case |
-
2010
- 2010-06-18 CN CN2010202398824U patent/CN201716193U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105873392A (en) * | 2016-04-29 | 2016-08-17 | 华中科技大学 | Signal processing circuit case |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LOCOMOTIVE + CAR RESEARCH INSTITUTE, CHINA ACADEMY Effective date: 20120718 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120718 Address after: 100081 Beijing city Haidian District Daliushu Road No. 2 Co-patentee after: Locomotive & Car Research Institute, China Academy of Railway Sciences Patentee after: China Academy of Railway Sciences Address before: 100081 Beijing city Haidian District Daliushu Road No. 2 Patentee before: Locomotive & Car Research Institute, China Academy of Railway Sciences |
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| CX01 | Expiry of patent term |
Granted publication date: 20110119 |
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| CX01 | Expiry of patent term |