CN110654240A - Intelligent rail trolley bus pantograph lifting control method, control device and system - Google Patents
Intelligent rail trolley bus pantograph lifting control method, control device and system Download PDFInfo
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- CN110654240A CN110654240A CN201810688868.3A CN201810688868A CN110654240A CN 110654240 A CN110654240 A CN 110654240A CN 201810688868 A CN201810688868 A CN 201810688868A CN 110654240 A CN110654240 A CN 110654240A
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- pantograph
- switch
- signal
- relay
- control unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
- B60L5/32—Devices for lifting and resetting the collector using fluid pressure
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a pantograph lifting control method of an intelligent rail electric car, which is characterized in that the pantograph lifting action of a pantograph is carried out only when a preset condition is met; the preset condition comprises one or more of any combination of cab signals, zero speed signals, parking signals and air pressure signals. The invention also discloses a control device, which comprises a control unit and more than one pantograph lifting control loop; each pantograph lifting control loop comprises a pantograph switch, a cab occupying switch, a zero-speed signal switch, a parking signal switch and an air pressure signal switch which are sequentially connected in series. The invention further discloses a pantograph system, which comprises a pantograph and the control device, wherein the control device is connected with the pantograph and is used for carrying out safety logic protection judgment to judge whether to carry out pantograph lifting operation or not after receiving an operation command. The intelligent rail electric vehicle pantograph lifting control method, the control device and the pantograph system have the advantage that the safety and reliability of pantograph lifting are improved.
Description
Technical Field
The invention mainly relates to the technical field of new energy automobiles, in particular to a control method, a control device and a control system for a pantograph lifting bow of an intelligent rail electric car.
Background
At present, two main charging modes for the power battery of the electric automobile are provided: one is the earth charging pile gun insertion charging mode, the maximum charging current is generally 250A; the other is a roof pantograph charging mode, and the maximum charging current can reach 1000A. Generally, an electric vehicle requiring large current charging is charged in a pantograph charging mode. The pantograph charging process is as follows: (1) after the vehicle enters the station and stops stably, the pantograph obtains a pantograph lifting instruction of the cab, and the pantograph head is lifted; (2) the current flows into the vehicle from the positive electrode of the conductor rail through the bow head sliding plate and the guide cable on one side, and flows back to the negative electrode of the conductor rail from the vehicle through the guide cable on the other side and the bow head; (3) after the vehicle is charged, the pantograph obtains a cab pantograph lowering instruction, and the pantograph head lowers and drives away from the charging station. The current intelligent rail electric car consists of three carriages, wherein two carriages are power carriages with a cab, a middle carriage is a trailer with a pantograph, and the carriages are connected by adopting a hinge device. The pantograph is raised and lowered generally depending on the observation operation of the driver, and during charging, the driver needs to trigger the pantograph raising command after ensuring that the vehicle is stable, and after charging, the driver needs to ensure that the pantograph is lowered and then runs. If the pantograph can be lifted and lowered only by observing operation of a driver during charging, the dependence on the driver is large. Namely, the driver can lift the pantograph only after the vehicle is stopped stably, and the driver needs to ensure that the pantograph descends and then runs after the charging is finished. If the vehicle is not stable in the charging process, or the pantograph is not lowered in place after the charging is finished, or a pantograph lifting command is operated by a driver by mistake in the driving process, great hidden danger is caused to the vehicle safety.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides a safe and reliable control method, control device and system for a pantograph lifting of an intelligent rail electric car.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a pantograph lifting control method of an intelligent rail electric car is characterized in that when the intelligent rail electric car meets preset conditions, the pantograph lifting action is carried out; the preset condition comprises one or more of a cab signal, a zero-speed signal, a parking signal and an air pressure signal in any combination.
As a further improvement of the above technical solution:
and detecting the position signal of the pantograph in real time, and performing vehicle brake control according to the position signal of the pantograph.
The invention also discloses a pantograph lifting control device of the intelligent rail electric car, which comprises a control unit and more than one pantograph lifting control loop which corresponds to the cab one by one; when the pantograph lifting control loops are in multiple paths, the multiple paths of pantograph lifting control loops are connected in parallel; each pantograph lifting control loop comprises a pantograph switch, a cab occupying switch, a zero-speed signal switch, a parking signal switch and an air pressure signal switch which are sequentially connected in series; the cab occupation switch, the zero-speed signal switch, the parking signal switch and the air pressure signal switch are all connected with the control unit.
As a further improvement of the above technical solution:
the cab occupation switch is a normally open contact of a cab occupation relay, a coil of the cab occupation relay is connected with the control unit, and after the cab is occupied, an occupation signal is output to the coil of the corresponding cab occupation relay by the control unit so as to enable the cab occupation relay to be electrified; the drivers' cab occupation relays are interlocked.
The zero-speed signal switch is a normally open contact of a zero-speed relay, and a coil of the zero-speed relay is connected with the control unit; when the vehicle is in the stall state, a stall signal is sent by the control unit to the coil of the stall relay to energize the same.
The parking signal switch is a normally open contact of a parking relay, and a coil of the parking relay is connected with the control unit; when the vehicle is in a parking state, a parking signal is sent by the control unit to a coil of the parking relay to energize the same.
The air pressure signal switch is a normally closed contact of the air pressure relay; the coil of the pneumatic relay is connected with the control unit; when the air pressure of the environment where the vehicle is located exceeds a preset threshold value, an air pressure signal is sent to a coil of an air pressure relay by the control unit so that the air pressure relay is electrified.
The pantograph control device further comprises a position detection unit, wherein the position detection unit is connected with the control unit and used for detecting a real-time position signal of the pantograph and sending the real-time position signal to the control unit.
The position detection unit comprises a pantograph lifting position switch for detecting whether the pantograph lifting position is in place or not and a pantograph lowering position switch for detecting whether the pantograph lowering position is in place or not.
The invention further discloses an intelligent rail electric vehicle pantograph system, which comprises a pantograph and the intelligent rail electric vehicle pantograph lifting control device, wherein the control device is connected with the pantograph and is used for carrying out safety logic protection judgment to judge whether the pantograph lifting operation is carried out or not after receiving the pantograph lifting operation command.
Compared with the prior art, the invention has the advantages that:
according to the control method, the control device and the pantograph system for the pantograph lifting of the smart rail electric car, disclosed by the invention, the pantograph lifting action is carried out only when the preset safety condition is met, so that the safety and reliability of the pantograph lifting are improved, and the safety of a vehicle is ensured; the preset conditions are reasonably selected, and reliable action of the pantograph can be met.
Drawings
Fig. 1 is a schematic circuit diagram of a control device according to the present invention.
Fig. 2 is a block diagram of the system of the present invention.
The reference numbers in the figures denote: 1. a pantograph operation command unit; 2. a security protection logic unit; 3. a control unit; 4. a pantograph.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1, in the pantograph lifting control method of the smart rail electric car according to the embodiment, when the smart rail electric car satisfies the preset condition, the pantograph lifting action of the pantograph 4 is performed; the preset condition comprises one or more of a cab signal, a zero-speed signal, a parking signal and an air pressure signal in any combination. It can be understood that the predicted conditions are safety conditions required to be met when the pantograph 4 safely lifts and lowers the pantograph, and the preset conditions can be increased and decreased according to actual conditions so as to meet actual requirements on site. According to the control method for the pantograph lifting of the smart rail electric car, the pantograph lifting action of the pantograph 4 is performed when the preset safety condition is met, so that the safety and reliability of the pantograph lifting are improved, and the safety of a vehicle is guaranteed; the preset conditions are reasonably selected, and the reliable action of the pantograph 4 can be met.
In this embodiment, a certain time is required from the issuance of the operation command of the pantograph 4 to the execution of the pantograph raising and lowering of the pantograph 4, and if the vehicle runs during this time, there is a potential safety hazard, and therefore, position detection is performed during the pantograph 4 raising/lowering process, and a pantograph raising in-place feedback signal is issued when the pantograph 4 is raised in place, and a pantograph lowering in-place feedback signal is issued when the pantograph is lowered in place. When the vehicle does not receive the feedback signal of the in-place pantograph lowering, the traction needs to be blocked and the brake needs to be applied, so that the safety of the vehicle is guaranteed.
As shown in fig. 1, the invention also discloses a pantograph lifting control device of the smart rail electric car, which comprises a control unit 3 and more than one pantograph 4 lifting control loop corresponding to the cab one by one; when the pantograph 4 lifting pantograph control loops are in multiple paths, the multiple paths of pantograph 4 lifting pantograph control loops are connected in parallel; each pantograph 4 lifting control loop comprises a pantograph 4 switch, a cab occupation switch, a zero-speed signal switch, a parking signal switch and an air pressure signal switch which are sequentially connected in series; the cab occupation switch, the zero-speed signal switch, the parking signal switch and the air pressure signal switch are all connected with the control unit 3. According to the pantograph lifting control system of the smart rail electric car, each safety signal switch is connected in series in the pantograph 4 lifting control loop, and the safety signal switches are conducted when all the safety signal switches meet the conditions, so that the safety reliability of the pantograph 4 lifting control loop is improved.
In this embodiment, the pantograph 4 switch is a two-position self-locking switch, and one switch is disposed in each cab. The cab occupation switch is a normally open contact of a cab occupation relay, a coil of the cab occupation relay is connected with the control unit 3, and after the cab is occupied, an occupation signal is output to the coil of the corresponding cab occupation relay by the control unit 3 so as to enable the cab occupation relay to be electrified; the drivers' cab occupation relays are interlocked. In this embodiment, the number of the drivers 'cab is two, and the drivers' cab is located at the head end and the tail end of the vehicle. At any one time, only one end of the cab is occupied.
In the embodiment, the zero-speed signal switch is a normally open contact of a zero-speed relay, and a coil of the zero-speed relay is connected with the control unit 3; when the vehicle is in the stall condition, a stall signal is sent by the control unit 3 to the coil of the stall relay to energize it. Since the pantograph 4 is charged in a stationary state after the vehicle is stopped, a zero-speed signal is also required as a safety protection condition in order to prevent a malfunction of the vehicle during traveling, and therefore, a normally open switch of a zero-speed relay needs to be connected in series to a control circuit.
In the embodiment, the parking signal switch is a normally open contact of a parking relay, and a coil of the parking relay is connected with the control unit 3; when the vehicle is in the parking state, a parking signal is sent by the control unit 3 to the coil of the parking relay to energize the same. Because the zero-speed signal can not completely ensure that the vehicle is in a stable state, the vehicle is also required to be considered to be in a parking state, and the vehicle is ensured not to suddenly run to cause safety accidents, a normally open switch of a parking relay is connected in series in a control loop.
In this embodiment, the air pressure signal switch is a normally closed contact of the air pressure relay; the coil of the air pressure relay is connected with the control unit 3; when the air pressure in the environment in which the vehicle is located exceeds a preset threshold, an air pressure signal is sent by the control unit 3 to the coil of the air pressure relay so that it gets powered. Because the 4 liter bow processes of most vehicle pantograph are realized through the gas circuit, in order to guarantee that 4 liter bow of pantograph can keep the stable state, the atmospheric pressure value in the pneumatic circuit should keep in certain extent, when atmospheric pressure is low excessively, can not guarantee the normal stable rise of pantograph 4. Therefore, a normally closed switch of the air pressure relay is connected in series in the control loop.
In this embodiment, since a certain time is required from the sending of the operation command of the pantograph 4 to the execution of the pantograph lifting and lowering of the pantograph 4, if the vehicle runs in this time, there is a safety hazard, a position detection unit is added in the process of lifting/lowering the pantograph 4, and specifically includes a pantograph lifting to position switch for sending a pantograph lifting to position feedback signal when the pantograph 4 is lifted in place; and the bow lowering in-place switch is used for sending a bow lowering in-place feedback signal when the bow lowering is in place. When the vehicle does not receive the pantograph lowering signal, the traction needs to be blocked and the brake needs to be applied, so that the safety of the vehicle is guaranteed.
As shown in fig. 2, the present invention further discloses a smart trolley pantograph system, which comprises a pantograph 4 and the smart trolley pantograph lifting pantograph control device, wherein the control device is connected to the pantograph 4 and is configured to perform a safety logic protection determination to determine whether to perform a pantograph lifting operation of the pantograph 4 after receiving a pantograph lifting operation command of the pantograph 4. For convenience of description, the pantograph switch in the control loop is separately divided into a pantograph operation command unit 1, and the other serially connected signal switches are divided into a safety protection logic unit 2. Wherein the pantograph operation command unit 1 triggers a pantograph lifting command; the safety protection logic unit 2 processes the relevant operation signals of the pantograph 4, transmits the processed signals to the pantograph 4, and the pantograph 4 executes the operation commands and feeds back the state signals to the control unit 3; the control unit 3 performs information interaction with other units and sends the safety signal to the safety protection logic unit 2 to realize the safety protection function.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. A pantograph lifting control method of an intelligent rail electric car is characterized in that when the intelligent rail electric car meets preset conditions, the pantograph lifting action of a pantograph (4) is carried out; the preset condition comprises one or more of a cab signal, a zero-speed signal, a parking signal and an air pressure signal in any combination.
2. The pantograph lifting control method of the smart rail electric vehicle as claimed in claim 1, wherein a position signal of the pantograph (4) is detected in real time, and the vehicle brake control is performed based on the position signal of the pantograph (4).
3. A control device for pantograph lifting of an intelligent rail electric car is characterized by comprising a control unit (3) and more than one pantograph lifting control loop which corresponds to a cab one by one; when the pantograph lifting control loops are in multiple paths, the multiple paths of pantograph lifting control loops are connected in parallel; each pantograph lifting control loop comprises a pantograph switch, a cab occupying switch, a zero-speed signal switch, a parking signal switch and an air pressure signal switch which are sequentially connected in series; the cab occupation switch, the zero-speed signal switch, the parking signal switch and the air pressure signal switch are all connected with the control unit (3).
4. The pantograph control unit of claim 3, wherein the cab occupancy switch is a normally open contact of a cab occupancy relay, a coil of the cab occupancy relay is connected to the control unit (3), and after the cab is occupied, the control unit (3) outputs an occupancy signal to the coil of the corresponding cab occupancy relay to energize the same; the drivers' cab occupation relays are interlocked.
5. The pantograph lifting control device of the smart rail electric vehicle as claimed in claim 3, wherein the zero speed signal switch is a normally open contact of a zero speed relay, and a coil of the zero speed relay is connected with the control unit (3); when the vehicle is in a stall state, a stall signal is sent by the control unit (3) to the coil of the stall relay to energize the same.
6. The pantograph lifting control device of the smart rail electric vehicle as claimed in claim 3, wherein the parking signal switch is a normally open contact of a parking relay, and a coil of the parking relay is connected with the control unit (3); when the vehicle is in a parking state, a parking signal is sent by the control unit (3) to a coil of the parking relay to energize the same.
7. The smart rail electric car pantograph lifting bow control device according to claim 3, wherein the air pressure signal switch is a normally closed contact of an air pressure relay; the coil of the pneumatic relay is connected with the control unit (3); when the air pressure of the environment in which the vehicle is located exceeds a preset threshold, an air pressure signal is sent by the control unit (3) to the coil of the air pressure relay so that it is powered.
8. A pantograph control device according to any one of claims 3 to 7, further comprising a position detection unit connected to said control unit (3) for detecting a real-time position signal of the pantograph (4) and sending it to the control unit (3).
9. The smart trolley pantograph lifting bow control device according to claim 8, wherein the position detecting unit comprises a pantograph-up-to-position switch for detecting whether the pantograph (4) is in position and a pantograph-down-to-position switch for detecting whether the pantograph (4) is in position.
10. A smart trolley pantograph system comprising a pantograph and a smart trolley pantograph lifting/lowering control device according to any one of claims 3 to 9, said control device being connected to the pantograph (4) and adapted to perform a safety logic protection decision to determine whether or not to perform a pantograph lifting/lowering operation of the pantograph (4) upon reception of a pantograph lifting/lowering operation command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810688868.3A CN110654240A (en) | 2018-06-28 | 2018-06-28 | Intelligent rail trolley bus pantograph lifting control method, control device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810688868.3A CN110654240A (en) | 2018-06-28 | 2018-06-28 | Intelligent rail trolley bus pantograph lifting control method, control device and system |
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| CN110654240A true CN110654240A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810688868.3A Pending CN110654240A (en) | 2018-06-28 | 2018-06-28 | Intelligent rail trolley bus pantograph lifting control method, control device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113147408A (en) * | 2021-03-29 | 2021-07-23 | 中车青岛四方机车车辆股份有限公司 | Pantograph abnormal lowering judgment method and device, electronic equipment and rail vehicle |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182095Y (en) * | 1994-01-19 | 1994-11-09 | 本溪钢铁公司运输部 | Safety pantograph for direct-current electric locomotive |
| CN2318075Y (en) * | 1997-12-19 | 1999-05-12 | 本溪钢铁(集团)有限责任公司 | Zero controller for pantograph of DC electric locomotive |
| JP2010183771A (en) * | 2009-02-06 | 2010-08-19 | Kawasaki Heavy Ind Ltd | Device for automatically lifting pantograph |
| CN203005118U (en) * | 2012-11-30 | 2013-06-19 | 南车株洲电力机车有限公司 | Pantograph control system applied to locomotive |
| CN103935250A (en) * | 2014-05-06 | 2014-07-23 | 南车株洲电力机车有限公司 | Device and method for detecting ascending-descending positions of pantograph |
| CN105416073A (en) * | 2015-12-25 | 2016-03-23 | 谢镕安 | Electric motor coach drive control system and method |
| CN105460025A (en) * | 2014-09-12 | 2016-04-06 | 中车大连电力牵引研发中心有限公司 | End change control method and control system for electric locomotive |
| CN107839488A (en) * | 2016-09-21 | 2018-03-27 | 郑州宇通客车股份有限公司 | A kind of pure electric vehicle current collecting bow lifting control method and device |
-
2018
- 2018-06-28 CN CN201810688868.3A patent/CN110654240A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182095Y (en) * | 1994-01-19 | 1994-11-09 | 本溪钢铁公司运输部 | Safety pantograph for direct-current electric locomotive |
| CN2318075Y (en) * | 1997-12-19 | 1999-05-12 | 本溪钢铁(集团)有限责任公司 | Zero controller for pantograph of DC electric locomotive |
| JP2010183771A (en) * | 2009-02-06 | 2010-08-19 | Kawasaki Heavy Ind Ltd | Device for automatically lifting pantograph |
| CN203005118U (en) * | 2012-11-30 | 2013-06-19 | 南车株洲电力机车有限公司 | Pantograph control system applied to locomotive |
| CN103935250A (en) * | 2014-05-06 | 2014-07-23 | 南车株洲电力机车有限公司 | Device and method for detecting ascending-descending positions of pantograph |
| CN105460025A (en) * | 2014-09-12 | 2016-04-06 | 中车大连电力牵引研发中心有限公司 | End change control method and control system for electric locomotive |
| CN105416073A (en) * | 2015-12-25 | 2016-03-23 | 谢镕安 | Electric motor coach drive control system and method |
| CN107839488A (en) * | 2016-09-21 | 2018-03-27 | 郑州宇通客车股份有限公司 | A kind of pure electric vehicle current collecting bow lifting control method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113147408A (en) * | 2021-03-29 | 2021-07-23 | 中车青岛四方机车车辆股份有限公司 | Pantograph abnormal lowering judgment method and device, electronic equipment and rail vehicle |
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