CN205538256U - Brake air pressure detection device - Google Patents
Brake air pressure detection device Download PDFInfo
- Publication number
- CN205538256U CN205538256U CN201620061237.5U CN201620061237U CN205538256U CN 205538256 U CN205538256 U CN 205538256U CN 201620061237 U CN201620061237 U CN 201620061237U CN 205538256 U CN205538256 U CN 205538256U
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- China
- Prior art keywords
- brake
- controller
- signal
- valve
- electrically connected
- 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 - Fee Related
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Abstract
The utility model relates to a brake air pressure detection device, including at least one pressure sensor for correspond the pressure value of valve on detecting the brake, and send current signal to the signal converter who corresponds with the pressure value, signal converter for the current signal that receiving pressure sensor sent, and convey electric current signal conversion to buffer for voltage signal, buffer for the voltage signal who sends signal converter keeps apart, enlargies back input controller, the controller for receive the data of buffer input, and compare rather than the data that correspond the valve under the normal condition of prestore on the brake, and send comparison result to display, the display for the comparison result of display controller input. The data of the valve that the the device basis detected are compared rather than the data under the normal condition to judging the gas circuit trouble and the operating condition of brake, maintaining that the degree of difficulty is little and reliable, the maintenance cost of brake is low.
Description
Technical field
This utility model relates to vehicle brake technology, particularly to a kind of brake pressure test device.
Background technology
Along with EMU developing rapidly in China, EMUs reliability of operation and safety are by more
Carry out the most concerns.As one of EMUs key technology, can brakes directly close in reliable and stable work
It is tied to the safe and stable operation of EMUs.The maintenance of brake at present depends on the parameter that foreign vendor provides more
And instrument, cause maintenance cost high, the phenomenons such as efficiency is low.In Braking System for High Speed Multiple Units, air path part
Mainly it is made up of valves such as including relief valve, EP valve, parking brake valve, relay valve, differential valve, altitude valve,
The duty of these valves directly affects the operational reliability of brake, therefore primary valve each to brake
Air pressure detect, be to evaluate the duty of brake and judge the reliable means of brake gas path failure.
Summary of the invention
Based on this, it is necessary to for the defect of prior art, it is provided that a kind of brake pressure test device, energy
Judge gas path failure and the duty of brake, reduce the maintenance cost of brake.
Its technical scheme is as follows:
A kind of brake pressure test device, including
At least one pressure transducer, is electrically connected with signal adapter, is used for detecting on brake corresponding valve
The force value of door, and send the current signal corresponding with force value to signal adapter；
Signal adapter, is electrically connected with isolated amplifier, for receiving the electric current letter that pressure transducer sends
Number, and current signal is converted to voltage signal is sent to isolated amplifier；
Isolated amplifier, is electrically connected with controller, for being carried out by the voltage signal that signal adapter sends
Controller is inputted after isolation, amplification；
Controller, is electrically connected with display, for receiving the data of isolated amplifier input, and prestores with it
Under the normal condition of storage, on brake, the data of corresponding valve are compared, and send comparison result to display
Device；
Display, for the comparison result of display controller input.
Its further technical scheme is as follows:
Described controller includes memorizer and processor, and memorizer corresponding valve in record-keeping system motivation is different
The data of corresponding valve, processor on brake under the force value of detection and storage normal condition under damped condition
The pressure curve that force value according to detection generates contrasts with the pressure curve under normal condition, and to system
In motivation, the fault of corresponding valve judges.
Described brake pressure test device also includes analog-digital converter, described isolated amplifier and controller
It is electrically connected with by described analog-digital converter.
Described brake pressure test device also includes at least one flow transducer, described flow transducer
It is electrically connected with signal adapter, for detecting the flow value of corresponding valve on brake, and sends and flow
The current signal of value correspondence is to signal adapter；Signal adapter is additionally operable to receive the electricity that flow transducer sends
Stream signal, and current signal is converted to voltage signal is sent to isolated amplifier.
Described brake pressure test device also includes that gating switch, described isolated amplifier lead to controller
Cross described gating switch to be electrically connected with.
Described controller is MCU.
Advantage or principle to preceding solution illustrate below:
Above-mentioned brake pressure test device, detects different valves on brake respectively by pressure transducer
Force value, is converted to voltage signal, voltage by signal adapter by the current signal that pressure transducer exports
Signal passes to controller after sound insulation isolation of amplifier, amplification, and controller is according to the data of the valve detected
Compare with the data under its normal condition, thus judge gas path failure and the duty of brake, system
Motivation gas circuit amplify output accurate pressure just can complete to brake reliably, alleviate, pressure maintaining effect, this device pair
The air characteristics integration test measuring accuracy of the valves such as the relay valve of brake is high, and maintenance difficulties is little and reliable,
The maintenance cost of brake is low.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the brake pressure test device described in this utility model embodiment；
Fig. 2 is the workflow block diagram of the brake pressure test device described in this utility model embodiment.
Description of reference numerals:
10, pressure transducer, 20, signal adapter, 30, isolated amplifier, 40, MCU, 50, aobvious
Show device, 60, analog-digital converter, 70, flow transducer, 80, gating switch, 90, power supply.
Detailed description of the invention
As it is shown in figure 1, a kind of brake pressure test device, including at least one pressure transducer 10, with
Signal adapter 20 is electrically connected with, and for detecting the force value of corresponding valve on brake, and sends and pressure
The current signal of value correspondence is to signal adapter 20；Signal adapter 20, electrically connects with isolated amplifier 30
Connect, for receiving the current signal that pressure transducer 10 sends, and current signal is converted to voltage signal biography
Deliver to isolated amplifier 30；Isolated amplifier 30, is electrically connected with controller, for by signal adapter 20
The voltage signal sent carries out isolating, amplifies after input controller；Controller, is electrically connected with display 50,
For receiving the data of isolated amplifier 30 input and corresponding with on brake under the normal condition of its pre-stored
The data of valve are compared, and comparison result sends to display 50；Display 50, is used for showing control
The comparison result of device processed input.Data can automatically gather, store, analyze, and remove from manually staring at and keep link, greatly
The big working strength reducing attendant.Described signal adapter 20 turns voltage letter for 4-20ma current signal
Number.
As in figure 2 it is shown, detect the force value of different valves on brake respectively by pressure transducer 10, logical
Cross signal adapter 20 and the current signal that pressure transducer 10 exports is converted to voltage signal, voltage signal
Through sound insulation isolation of amplifier, amplify after pass to controller, controller according to the data of the valve detected and its
Data under normal condition are compared, thus judge gas path failure and the duty of brake, Maintenance Difficulty
Spending little and reliable, the maintenance cost of brake is low.
Concrete, described controller includes memorizer and processor, and memorizer is corresponding in record-keeping system motivation
The number of corresponding valve on brake under the force value detected under valve different braking operating mode and storage normal condition
According to, it is right that the pressure curve that processor generates according to the force value of detection and the pressure curve under normal condition are carried out
Ratio, and the fault of valve corresponding on brake is judged.In advance by the normal shape of each valve on brake
Data under state store in memory, and generate pressure curve, when processor obtains each valve of detection not
With the data under operating mode, generate corresponding pressure curve, by pressure curve and the normal condition of detection data genaration
Data genaration pressure curve contrast, can evaluate intuitively, fast brake duty and judge system
Motivation gas path failure.Controller described in this enforcement is MCU40.
Described brake pressure test device also includes analog-digital converter 60, described isolated amplifier 30 and control
Device processed is electrically connected with by described analog-digital converter 60.Signal after isolated amplifier 30 processes is through modulus
Reach again after MCU40, MCU40 process after transducer 60 conversion and result is sent to have touch function
Display 50 show in real time.Power supply 90 can be the working power that device itself carries, can be by filling
Electricity battery composition.The described display 50 with touch function, arranges for human-computer interaction interface, can lead to this
Display 50 enquiry of historical data, inquires about current pressure condition curve, sets abnormal prompt.
Described brake pressure test device also includes at least one flow transducer 70, described flow sensing
Device 70 is electrically connected with signal adapter 20, for detecting the flow value of corresponding valve on brake, concurrently
Send the current signal corresponding with flow value to signal adapter 20；Signal adapter 20 is additionally operable to receive flow and passes
The current signal that sensor 70 sends, and current signal is converted to voltage signal is sent to isolated amplifier 30.
Detected the gas flow of each valve by flow transducer 70, in conjunction with pressure transducer 10 detection each
The gas pressure of valve, controller synthesis judges to evaluate more accurately the fault of brake.Described system
Motivation pressure test device also includes gating switch 80, and described isolated amplifier 30 and controller are by described choosing
Open up pass 80 electric connection.By gating switch 80, controller can receive some valve selectively
Data, expand multiple pressure transducer 10 or flow transducer 70, it is achieved to brake airline pressure in many ways
Position detection.The present embodiment is provided with three pressure transducers 10 and two flow transducers 70, according to demand may be used
Select multiple pressure transducer 10 and flow transducer 70.
Gas circuit amplify the accurate pressure of output just can complete to brake reliably, alleviate, pressure maintaining effect, to braking
The air characteristics integration test measuring accuracy of the valves such as the relay valve of machine has the highest requirement, such as Fig. 1,2 institutes
Showing, the present embodiment feeds back information to high response frequency by pressure transducer 10 and/or flow transducer 70
Signal adapter 20, information reaches controller again after isolated amplifier 30 processes with analog-digital converter 60,
Thus obtain output pressure and/or the flow of the valves such as relay valve.When repair and maintenance parked by train, simulation is not
Same damped condition, is depicted as pressure curve, pressure when contrast brake normally works by the force value of detection
Force curve, evaluates and judges service behaviour and the hidden danger of brake, improves maintenance efficiency.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right
The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills
There is not contradiction in the combination of art feature, is all considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, its describe more concrete and
In detail, but therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that,
For the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to
Making some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, this utility model
The protection domain of patent should be as the criterion with claims.
Claims (6)
1. a brake pressure test device, it is characterised in that include
At least one pressure transducer, is electrically connected with signal adapter, is used for detecting on brake corresponding valve
The force value of door, and send the current signal corresponding with force value to signal adapter；
Signal adapter, is electrically connected with isolated amplifier, for receiving the electric current letter that pressure transducer sends
Number, and current signal is converted to voltage signal is sent to isolated amplifier；
Isolated amplifier, is electrically connected with controller, for being carried out by the voltage signal that signal adapter sends
Controller is inputted after isolation, amplification；
Controller, is electrically connected with display, for receiving the data of isolated amplifier input, and prestores with it
Under the normal condition of storage, on brake, the data of corresponding valve are compared, and send comparison result to display
Device；
Display, for the comparison result of display controller input.
2. brake pressure test device as claimed in claim 1, it is characterised in that described controller bag
Including memorizer and processor, memorizer is detection under corresponding valve different braking operating mode in record-keeping system motivation
The data of corresponding valve on brake under force value and storage normal condition, processor is according to the force value of detection
The pressure curve generated contrasts with the pressure curve under normal condition, and to valve corresponding on brake
Fault judges.
3. the brake pressure test device as described in any one of claim 1 to 2, it is characterised in that its
Also include that analog-digital converter, described isolated amplifier are electrically connected with by described analog-digital converter with controller.
4. brake pressure test device as claimed in claim 3, it is characterised in that it also includes at least
One flow transducer, described flow transducer is electrically connected with signal adapter, is used for detecting brake
The flow value of corresponding valve, and send the current signal corresponding with flow value to signal adapter；Signal is changed
Device is additionally operable to receive the current signal that flow transducer sends, and current signal is converted to voltage signal transmission
To isolated amplifier.
5. brake pressure test device as claimed in claim 4, it is characterised in that it also includes gating
Switch, described isolated amplifier is electrically connected with by described gating switch with controller.
6. brake pressure test device as claimed in claim 3, it is characterised in that described controller is
MCU。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620061237.5U CN205538256U (en) | 2016-01-21 | 2016-01-21 | Brake air pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620061237.5U CN205538256U (en) | 2016-01-21 | 2016-01-21 | Brake air pressure detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205538256U true CN205538256U (en) | 2016-08-31 |
Family
ID=56768485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620061237.5U Expired - Fee Related CN205538256U (en) | 2016-01-21 | 2016-01-21 | Brake air pressure detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205538256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303269A (en) * | 2018-02-01 | 2018-07-20 | 广州市米萨汽车电子科技有限公司 | Fault detection system and method for motor vehicle braking system |
-
2016
- 2016-01-21 CN CN201620061237.5U patent/CN205538256U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303269A (en) * | 2018-02-01 | 2018-07-20 | 广州市米萨汽车电子科技有限公司 | Fault detection system and method for motor vehicle braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20200121 |