CN206990745U - A kind of signal collection and transmission apparatus for track circuit - Google Patents
A kind of signal collection and transmission apparatus for track circuit Download PDFInfo
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- CN206990745U CN206990745U CN201720795189.7U CN201720795189U CN206990745U CN 206990745 U CN206990745 U CN 206990745U CN 201720795189 U CN201720795189 U CN 201720795189U CN 206990745 U CN206990745 U CN 206990745U
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- signal
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- signal acquisition
- transmission
- track circuit
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Abstract
It the utility model is related to a kind of signal collection and transmission apparatus for track circuit, described device includes signal acquisition module, signal transmission module and power supply, the signal acquisition module is connected with track circuit, the signal transmission module is connected with signal acquisition module, and the power supply is connected with signal acquisition module and signal transmission module respectively；The signal acquisition module includes signal acquisition sensor, sample circuit and DSP signal processors, the signal acquisition sensor is connected with track circuit, the sample circuit is connected with signal acquisition sensor, and the DSP signal processors are connected with sample circuit and signal transmission module respectively.Compared with prior art, the utility model has the advantages that accurate signal transmission, signal transmission form variation and is easily achieved.
Description
Technical field
Signal acquisition transmission field is the utility model is related to, is passed more particularly, to a kind of signal acquisition for track circuit
Defeated device.
Background technology
Outdoor frequency shift modulated track circuit test generally requires electricity business attendant and carries the specific purpose tool such as shift frequency table or oscillograph
Measure at the scene, maintenance efficiency is low, it is difficult to pinpoint the problems in real time, Train delay can be caused when serious, influences train operation.
Patent CN201410453552 proposes a kind of track-circuit signalling acquisition system, passes through signal gathering unit, A/D
Modular converter, DMA transfer module, shift frequency demodulation module, memory and data transmission module realize collection to circuit signal and
Transmission, but the data transfer that the system is realized by then passing through power carrier, collection transmitting procedure need to carry out temporarily signal
Deposit, and preset value is latter and be transmitted again after carrying out shift frequency demodulation, and process is excessively complicated, and time-consuming and multiple modules reaching
Set up and add system cost, be unsuitable for popularity.
Utility model content
The purpose of this utility model is to provide a kind of signal collection and transmission apparatus for track circuit regarding to the issue above.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of signal collection and transmission apparatus for track circuit, described device includes signal acquisition module, signal transmits
Module and power supply, the signal acquisition module are connected with track circuit, the signal transmission module and signal acquisition module
Connection, the power supply are connected with signal acquisition module and signal transmission module respectively；The signal acquisition module includes letter
Number collection sensor, sample circuit and DSP signal processors, the signal acquisition sensor is connected with track circuit, described to adopt
Sample circuit is connected with signal acquisition sensor, and the DSP signal processors are connected with sample circuit and signal transmission module respectively.
The signal acquisition sensor includes centre path current sensor and voltage sensor, the centre path current sensing
Device and voltage sensor are respectively connected with track current and sample circuit.
The sample circuit includes a/d converter and multiple sampling channels, and quantity and the signal acquisition of the sampling channel pass
The quantity of sensor matches, and the sampling channel is connected with signal acquisition sensor and a/d converter respectively, the a/d converter
It is connected with DSP signal processors.
The sampling channel includes sampling resistor, voltage-stabiliser tube, in-phase amplification circuit and low pass filter, the sampling resistor
It is connected with low pass filter, the voltage-stabiliser tube is connected with low pass filter and in-phase amplification circuit respectively.
The signal transmission module includes signal transmission unit and signal transmission control unit, and the signal transmission control is single
Member is connected with signal acquisition module and signal transmission unit respectively.
The signal transmission unit includes electric force carrier transmission line, CAN or RS485 buses.
The signal transmission control unit includes MCU controllers, toggle switch and digital thermometer, the MCU controllers
It is connected respectively with signal acquisition module and signal transmission unit, the toggle switch and digital thermometer connect with MCU controllers
Connect.
Described device also includes termination power, and the termination power is connected with signal transmission module.
Compared with prior art, the utility model has the advantages that：
(1) signal collection and transmission apparatus proposed by the present invention, signal is acquired simultaneously by signal acquisition module first
Sampling processing is carried out, extraction sampled signal then is further processed by the DSP signal processors of signal acquisition module
Go out signal to be detected to send to signal transmission module, according to the selection of transmission mode, controlled by MCU in signal transmission module
The control of device transmits a signal to the external world, therefore when CAN and RS485 buses carry out data transmission, without being kept in
It can directly forward, be compared compared with mode that is temporary another and transmitted after shift frequency demodulation is carried out to signal, the present invention proposes
Device transmission it is time-consuming short, and module set it is simple, it is easy to accomplish, be easy to popularity.
(2) signal acquisition module includes signal acquisition sensor, sample circuit and DSP signal processors, by sampling electricity
Road and the cooperation of DSP signal processors, complete effective processing to gathering signal, and module sets simple, it is easy to accomplish, practicality
Can be strong.
(3) signal acquisition sensor includes centre path current sensor and voltage sensor, and electric current and voltage can be believed
Number it is acquired, while centre path current sensor is non-direct contact to track circuit, reduces the shadow to circuit-under-test
Ring and destroy.
(4) sample circuit includes a/d converter and multiple sampling channels, wherein each sampling channel is included with mutually amplification
Circuit, the setting of in-phase amplification circuit farthest reduce the influence to the resistance of sampling resistor, improve sampling precision.
(5) signal transmission module includes signal transmission unit and signal transmission control unit, wherein signal transmission unit bag
Electric force carrier transmission line, CAN or RS485 buses are included, only selects one kind therein to be configured in each use, so
On the one hand the diversity of signal transmission is ensure that, can be another according to the method for actual conditions selection signal transmission, strong adaptability
Aspect also reduces the volume of whole signal collection and transmission apparatus, reduces the manufacturing cost of device, improves the practicality of device
Property.
(6) signal transmission control unit includes MCU controllers, toggle switch and digital thermometer, by toggle switch more
Change the state of a control of MCU controllers, so that the MCU controllers transmission means different from signal transmission unit is engaged, together
When digital thermometer can be with monitoring of environmental temperature, and fed back to MCU controllers.
(7) signal collection and transmission apparatus also includes termination power, and the termination power carries in signal transmission unit for electric power
It is connected during ripple transmission line with signal transmission unit, it is possible to achieve the transmitting-receiving of power carrier signal, and there is lightning protection, avoid signal from declining
The function of subtracting and isolated with power supply, it ensure that the stability of signal transmission.
Brief description of the drawings
Fig. 1 is the structural representation of the signal collection and transmission apparatus for track circuit；
Fig. 2 is the structural representation of signal transmission unit；
Wherein, 1 is termination power, and 2 be power supply, and 3 be signal transmission unit, and 4 be MCU controllers, and 5 be DSP signals
Processor, 6 be sample circuit, and 7 be centre path current sensor, and 8 be voltage sensor, and 31 be electric force carrier transmission line, and 32 are
CAN, 33 be RS485 buses.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical scheme, give detailed embodiment and specific operating process, but guarantor of the present utility model
Shield scope is not limited to following embodiments.
A kind of signal collection and transmission apparatus for track circuit is provided in the present embodiment, including：Signal acquisition module,
It is connected with track circuit, for being acquired to the signal of track circuit and sampling processing；Signal transmission module, with signal acquisition
Module is connected, and the signal for signal acquisition module to be gathered is transmitted to the external world；Power supply 2, respectively with signal acquisition module
Connected with signal transmission module, for being powered for signal acquisition module and signal transmission module.
Wherein, signal acquisition module includes：Signal acquisition sensor, is connected with track circuit, for track circuit
Signal is acquired；Sample circuit 6, it is connected with signal acquisition sensor, the signal for being gathered to signal acquisition sensor enters
Row sampling；DSP signal processors 5, it is connected respectively with sample circuit 6 and signal transmission module, for what is obtained to sample circuit 6
Sampled signal carries out signal transacting.Signal acquisition sensor includes centre path current sensor 7 and voltage sensor 8, punching
Current sensor 7 and voltage sensor 8 are respectively connected with track current and sample circuit 6.Sample circuit 6 includes a/d converter
With multiple sampling channels, the quantity and the quantity of signal acquisition sensor of sampling channel match, sampling channel respectively with signal
Collection sensor is connected with a/d converter, and a/d converter is connected with DSP signal processors 5.Sampling channel includes sampling resistor, steady
Pressure pipe, in-phase amplification circuit and low pass filter, the sampling resistor are connected with low pass filter, the voltage-stabiliser tube respectively with it is low
Bandpass filter connects with in-phase amplification circuit.Signal transacting includes data filtering and fsk signal decodes.Signal transmission module bag
Include：Signal transmission unit 3, the signal for signal acquisition module to be gathered are transmitted to the external world；Signal transmission control unit, respectively
It is connected with signal acquisition module and signal transmission unit 3, for transmitting-receiving of the control signal transmission unit 3 to signal.Signal transmits
Unit 3 includes electric force carrier transmission line 31, CAN 32 or RS485 buses 33.Signal transmission control unit includes：MCU is controlled
Device 4, it is connected respectively with signal acquisition module and signal transmission unit 3, for transmitting-receiving of the control signal transmission unit 3 to signal；
Toggle switch, it is connected with MCU controllers 4, the transmission means for switching signal transmission unit 3；Digital thermometer, controlled with MCU
Device 4 processed connects, for feeding back ambient temperature to MCU controllers 4.Device also includes termination power 1, and termination power 1 passes with signal
Defeated module is connected thereto when using electric force carrier transmission line.
The structure for the signal pickup assembly realized according to said structure to the modules in figure as shown in figure 1, enter below
Row description：It is sample circuit 6 first, there are 8 passages inside sample circuit 6 in the present embodiment, each passage has 5V voltage stabilizing
Pipe, in-phase amplification circuit and low pass filter, 8 passages, which are connected to one, has 8 passage DAS, and built-in 16, bipolarity is defeated
Enter, the a/d converter of synchronized sampling, using same phase discharge circuit, at utmost reduce the shadow to current sensor sample resistance value
Ring, due to sampling voltage≤1V, signal needs to amplify, and sample resistance selects 0.1% precision.DSP signal processors 5 complete AD
Sampling, data filtering, fsk signal decoding, the work of data transfer.MCU controllers 4, MCU are transmitted data to by SPI interface
The transmitting-receiving of the control signal transmission unit 3 (as shown in Figure 2) of controller 4, SPI interface receive the decoded data of DSP.DSP journey
Sequence is placed in MCU, and by SPI interface when upper electric, the program that FLASH inside MCU be present is transferred in DSP internal memories.It is every to distinguish
One site address, a serial ports are used to write ID number into FLASH.Data temperature meter is read and write by monobus mode simultaneously
Temperature.Signal transmission unit 3 uses the optional module of veneer, can insert power line carrier module according to scene needs or CAN drives
Module or RS485 bus driver blocks.Module control signal is determined by toggle switch position.Power line carrier module supporting bus
Type, starshaped net topology.To make power carrier signal should not be interfered to ZPW-2000 equipment, plc communication frequency model
Enclosing should be in more than 30kHz.± 5V, 3.3V, 1.2V needed for the offer signal acquisition module of power supply 2 and signal transmission module.
Power supply chip overcurrent protection is caused greatly to avoid gathering extension set starting current, from maximum operating currenbt 3A power supply chip.Coupling
Close transmission and reception that circuit 1 receives power carrier signal, there is provided lightning protection, avoid signal attenuation, isolate with remote feeding power system.
Toggle switch is according to the module configuration parameter of scene selection, and MCU controllers 4 are according to the different control of the state of toggle switch offer
Signal.
The course of work of the device is as follows：Centre path current sensor 7 and voltage sensor 8 pass the signal of collection first
Sample circuit 6 is transported to, common transport is extremely after sample circuit 6 is sampled by multiple sampling channels to the signal of each sensor
A/d converter carries out analog-to-digital conversion, and the signal after conversion is transmitted to DSP signal processors 5, by DSP signal processors 5
After carrying out data filtering and fsk signal decoding, then transmit to signal transmission control unit, the MCU of signal transmission control unit and control
Device 4 processed selectes transmission means according to the setting of toggle switch, after MCU controllers 4 read the data of toggle switch, is tied according to reading
The pin configuration of the control module of MCU controllers 4 is the serial ports corresponding with transmission means by fruit, so that signal transmission is single
First 3 pairs of signals are received and dispatched, the transmitting-receiving approach of signal transmission unit 3 can be electric force carrier transmission line 31, CAN 32 or
One kind in RS485 buses 33, is selected according to actual conditions, in the case of CAN and RS485 buses, MCU controls
The direct control signal transmission unit of device realizes the transmitting-receiving of signal, and under the transmission means of power carrier, MCU controllers are according to setting
Clock, control signal transmission unit realize signal periodicity transmitting-receiving.
Claims (8)
- A kind of 1. signal collection and transmission apparatus for track circuit, it is characterised in that described device include signal acquisition module, Signal transmission module and power supply, the signal acquisition module are connected with track circuit, the signal transmission module and signal Acquisition module is connected, and the power supply is connected with signal acquisition module and signal transmission module respectively；The signal acquisition mould Block includes signal acquisition sensor, sample circuit and DSP signal processors, and the signal acquisition sensor connects with track circuit Connect, the sample circuit is connected with signal acquisition sensor, and the DSP signal processors transmit with sample circuit and signal respectively Module connects.
- 2. the signal collection and transmission apparatus according to claim 1 for track circuit, it is characterised in that the signal is adopted Collection sensor includes centre path current sensor and voltage sensor, and the centre path current sensor and voltage sensor are divided equally It is not connected with track current and sample circuit.
- 3. the signal collection and transmission apparatus according to claim 1 for track circuit, it is characterised in that the sampling electricity Road includes a/d converter and multiple sampling channels, and the quantity and the quantity of signal acquisition sensor of the sampling channel match, The sampling channel is connected with signal acquisition sensor and a/d converter respectively, and the a/d converter connects with DSP signal processors Connect.
- 4. the signal collection and transmission apparatus according to claim 3 for track circuit, it is characterised in that the sampling is logical Road includes sampling resistor, voltage-stabiliser tube, in-phase amplification circuit and low pass filter, and the sampling resistor is connected with low pass filter, The voltage-stabiliser tube is connected with low pass filter and in-phase amplification circuit respectively.
- 5. the signal collection and transmission apparatus according to claim 1 for track circuit, it is characterised in that the signal passes Defeated module includes signal transmission unit and signal transmission control unit, the signal transmission control unit respectively with signal acquisition mould Block connects with signal transmission unit.
- 6. the signal collection and transmission apparatus according to claim 5 for track circuit, it is characterised in that the signal passes Defeated unit includes electric force carrier transmission line, CAN or RS485 buses.
- 7. the signal collection and transmission apparatus according to claim 5 for track circuit, it is characterised in that the signal passes Defeated control unit includes MCU controllers, toggle switch and digital thermometer, the MCU controllers respectively with signal acquisition module Connected with signal transmission unit, the toggle switch and digital thermometer are connected with MCU controllers.
- 8. the signal collection and transmission apparatus according to claim 1 for track circuit, it is characterised in that described device is also Including termination power, the termination power is connected with signal transmission module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720795189.7U CN206990745U (en) | 2017-07-03 | 2017-07-03 | A kind of signal collection and transmission apparatus for track circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720795189.7U CN206990745U (en) | 2017-07-03 | 2017-07-03 | A kind of signal collection and transmission apparatus for track circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206990745U true CN206990745U (en) | 2018-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720795189.7U Active CN206990745U (en) | 2017-07-03 | 2017-07-03 | A kind of signal collection and transmission apparatus for track circuit |
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| CN (1) | CN206990745U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290648A (en) * | 2017-07-03 | 2017-10-24 | 上海铁路通信有限公司 | A kind of signal collection and transmission apparatus for track circuit |
| CN109429744A (en) * | 2018-11-12 | 2019-03-08 | 郑州源创智控有限公司 | Silo Multifunction ventilated system controller |
-
2017
- 2017-07-03 CN CN201720795189.7U patent/CN206990745U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290648A (en) * | 2017-07-03 | 2017-10-24 | 上海铁路通信有限公司 | A kind of signal collection and transmission apparatus for track circuit |
| CN107290648B (en) * | 2017-07-03 | 2024-04-05 | 上海铁路通信有限公司 | Signal acquisition and transmission device for track circuit |
| CN109429744A (en) * | 2018-11-12 | 2019-03-08 | 郑州源创智控有限公司 | Silo Multifunction ventilated system controller |
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