CN202641680U - EP (Electropneumatic) valve control equipment for subway brake system - Google Patents
EP (Electropneumatic) valve control equipment for subway brake system Download PDFInfo
- Publication number
- CN202641680U CN202641680U CN 201220182578 CN201220182578U CN202641680U CN 202641680 U CN202641680 U CN 202641680U CN 201220182578 CN201220182578 CN 201220182578 CN 201220182578 U CN201220182578 U CN 201220182578U CN 202641680 U CN202641680 U CN 202641680U
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- CN
- China
- Prior art keywords
- speed switch
- switch valve
- braking
- valve
- pressure sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Braking Systems And Boosters (AREA)
Abstract
EP (Electropneumatic) valve control equipment for a subway brake system comprises a pressure sensor, a brake high-speed switch valve, a remission high-speed switch valve and a microcomputer controller integrating a control strategy, wherein the current signal output terminal of the pressure sensor is connected with the analog signal input terminal of the microcomputer controller; the analog signal output terminals of the microcomputer controller are respectively connected with the voltage signal input terminals of the remission high-speed switch and the brake high-speed switch valve; the air outlet of the remission high-speed switch valve is communicated with atmosphere; the air inlet of the brake high-speed switch valve is connected with an air cylinder; and the air inlet of the remission high-speed switch valve, the air outlet of the brake high-speed switch valve and the pressure input port of the pressure sensor are communicated with the control pressure input port of a relay valve. According to the utility model, the pressure of a volume chamber is transmitted to a microcomputer via the pressure sensor and is computed through the control strategy in the microcomputer, and then an analogy signal is output, so that the two high-speed valves are driven to charge and discharge air for the volume chamber; and the volume chamber outputs corresponding pressure air to brake in a simulation manner, so that close-cycle control is achieved.
Description
Technical field
The utility model relates to a kind of EP control valve device for the metro braking system.
Background technology
The EP valve gear is one of critical component of metro braking system, usage ratio electropneumatic valve on more present trains, electric current by the control ratio electropneumatic valve, obtain proportional air pressure, because the output element of the electricity/power of this electropneumatic valve is open loop, and have the ring that stagnates, its requirement on machining accuracy is higher, and the handling labor that the scene is used also has certain requirement.
The utility model content
Technical problem to be solved in the utility model is, overcomes the above-mentioned deficiency of prior art, and a kind of EP control valve device for the metro braking system is provided, its can be in brake system regulation output pressure quickly and accurately.
In order to solve above technical matters, a kind of EP control valve device for the metro braking system that the utility model provides, it is characterized in that comprising: pressure sensor, the braking high-speed switch valve, alleviate high-speed switch valve, and the microcomputerized controller of Integrating controls strategies, the current signal output end of described pressure sensor is connected with the input end of analog signal of microcomputerized controller, first of described microcomputerized controller, the second analog signal output respectively with alleviate high-speed switch valve, the voltage signal input end of braking high-speed switch valve links to each other, alleviating the high speed switch valve outlet communicates with atmosphere, the admission port of braking high-speed switch valve is connected the admission port of described alleviation high-speed switch valve with reservoir, the exhausr port of braking high-speed switch valve, the service braking control presssure input port UNICOM of the pressure introduction port of pressure sensor and relay valve.
The utility model further improves and is: it also includes gas path plate, described gas path plate has the port of chamber volume and four and described chamber volume UNICOM, and described four ports are connected with the admission port of alleviating high-speed switch valve, the exhausr port of braking high-speed switch valve, the service braking control presssure input port of relay valve, the pressure introduction port of pressure sensor respectively.
Further, described pressure sensor, braking high-speed switch valve, alleviation high-speed switch valve are installed on the gas path plate.
Further, described alleviation high-speed switch valve is open type, and described braking high-speed switch valve is closed type.
The utility model EP control valve device can feed back to microcomputer by pressure sensor with chamber volume pressure, output amplitude was the pwm signal of the different duty of 24V after control policy in microcomputer calculated, driving two fast valves inflates and exhaust chamber volume, chamber volume is exported corresponding pressure air in order to braking, form closed loop control, the utlity model has that overshoot is little, control accuracy is high (error less than ± 5KPa), the characteristics such as (adjusting 0 ~ 100% goal pressure in 0.6 second) and closed loop control are swift in response.
Description of drawings
Fig. 1 is the structured flowchart that the utility model is used for the EP control valve device of metro braking system.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.Need to prove that accompanying drawing all adopts very the form of simplifying and all uses non-accurately ratio, only in order to convenient, the purpose of aid illustration the utility model embodiment clearly.
As shown in Figure 1, the utility model metro braking EP of system valve gear, its composition comprises: the microcomputerized controller BCU of Integrating controls strategies, braking high-speed switch valve AV, alleviate high-speed switch valve RV, pressure sensor Tpil, and gas path plate GB, the current signal output end J14 of pressure sensor Tpil is connected with the input end of analog signal J15 of the microcomputerized controller BCU of Integrating controls strategies, the first analog signal output J1 of the microcomputerized controller BCU of Integrating controls strategies, the second analog signal output J2 respectively with the voltage signal input end J3 of alleviating high-speed switch valve RV, the voltage signal input end J4 of braking high-speed switch valve AV links to each other, the exhausr port J6 of alleviating high-speed switch valve RV communicates with atmosphere, the admission port J7 of braking high-speed switch valve AV is connected with reservoir, alleviate the admission port J5 of high-speed switch valve RV, the exhausr port J8 of braking high-speed switch valve AV and the pressure introduction port J13 of pressure sensor Tpil are installed in respectively the port J9 of gas path plate GB, on J10 and the J12, the port J11 of gas path plate GB is air extractor duct, be connected with the service braking control presssure input port of relay valve, described gas path plate GB has the port J9 of chamber volume and four and described chamber volume UNICOM, J10, J11 and J12, described four port J9, J10, J11, J12 respectively with the admission port of alleviating high-speed switch valve RV, the exhausr port of braking high-speed switch valve AV, the pressure introduction port of relay valve, the pressure introduction port of pressure sensor Tpil connects.Described alleviation high-speed switch valve is open type, and described braking high-speed switch valve is closed type.
Braking high-speed switch valve AV of the present utility model and the incoming signal of alleviating high-speed switch valve RV are the pwm signal that amplitude voltage becomes when being the dutycycle of 24V, the current output signal of pressure sensor Tpil is the standard current signal of 4-20mA, the inlet end J7 input pressure of braking high-speed switch valve AV is 780-900kPa, and the air pressure of gas path plate GB air extractor duct J11 output is 0-600kPa.
Control policy among the microcomputerized controller BCU of the present utility model adopts pulse width modulation mode to drive fast valve, and controlled adjuster has adopted anti-underbalance effect, anti-integration is saturated and with the New PID Control device of dead area compensation.According to pressure and the target braking force in the gas path plate of pressure sensor feedback, the control policy program calculates the time variable duty cycle that drives two fast valves, and voltage signal inputed to two high-speed switch valves, two switch valves are by inflation and exhaust, make the gas path plate delivery pressure equal goal pressure, this pressure is only as control presssure as far as possible, the relay valve of brake system with its Flow amplification after, to be transported to brake cylinder with equipressure, train will be carried out service braking.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (5)
1. EP control valve device that is used for the metro braking system, it is characterized in that comprising: pressure sensor, the braking high-speed switch valve, alleviate high-speed switch valve, and the microcomputerized controller of Integrating controls strategies, the current signal output end of described pressure sensor is connected with the input end of analog signal of microcomputerized controller, first of described microcomputerized controller, the second analog signal output respectively with alleviate high-speed switch valve, the voltage signal input end of braking high-speed switch valve links to each other, alleviating the high speed switch valve outlet communicates with atmosphere, the admission port of braking high-speed switch valve is connected the admission port of described alleviation high-speed switch valve with reservoir, the exhausr port of braking high-speed switch valve, the service braking control presssure input port UNICOM of the pressure introduction port of pressure sensor and relay valve.
2. the EP control valve device for the metro braking system according to claim 1, it is characterized in that: also include gas path plate, described gas path plate has the port of chamber volume and four and described chamber volume UNICOM, and described four ports are connected with the admission port of alleviating high-speed switch valve, the exhausr port of braking high-speed switch valve, the service braking control presssure input port of relay valve, the pressure introduction port of pressure sensor respectively.
3. the EP control valve device for the metro braking system according to claim 2 is characterized in that: described pressure sensor, braking high-speed switch valve, alleviate high-speed switch valve and be installed on the gas path plate.
4. the EP control valve device for the metro braking system according to claim 3, it is characterized in that: described alleviation high-speed switch valve is open type, described braking high-speed switch valve is closed type.
5. the EP control valve device for the metro braking system according to claim 3, it is characterized in that: control policy in the described microcomputerized controller adopts pulse width modulation mode to drive high-speed switch valve, and controlled adjuster has adopted saturated, the anti-underbalance effect of anti-integration and with the New PID Control device of dead area compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220182578 CN202641680U (en) | 2012-04-25 | 2012-04-25 | EP (Electropneumatic) valve control equipment for subway brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220182578 CN202641680U (en) | 2012-04-25 | 2012-04-25 | EP (Electropneumatic) valve control equipment for subway brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202641680U true CN202641680U (en) | 2013-01-02 |
Family
ID=47410831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220182578 Expired - Lifetime CN202641680U (en) | 2012-04-25 | 2012-04-25 | EP (Electropneumatic) valve control equipment for subway brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202641680U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975705A (en) * | 2012-04-25 | 2013-03-20 | 南京浦镇海泰制动设备有限公司 | Electro-pneumatic (EP) valve control device used in metro braking system |
| CN106483992A (en) * | 2016-11-02 | 2017-03-08 | 杭州创联电子技术有限公司 | The air exhaust control device of train braking and method |
-
2012
- 2012-04-25 CN CN 201220182578 patent/CN202641680U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975705A (en) * | 2012-04-25 | 2013-03-20 | 南京浦镇海泰制动设备有限公司 | Electro-pneumatic (EP) valve control device used in metro braking system |
| CN106483992A (en) * | 2016-11-02 | 2017-03-08 | 杭州创联电子技术有限公司 | The air exhaust control device of train braking and method |
| CN106483992B (en) * | 2016-11-02 | 2019-04-16 | 杭州创联电子技术有限公司 | The air exhaust control device and method of train braking |
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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 |
Granted publication date: 20130102 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |