CN103699040A - Separate portable signal monitor - Google Patents

Separate portable signal monitor Download PDF

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Publication number
CN103699040A
CN103699040A CN201310729470.7A CN201310729470A CN103699040A CN 103699040 A CN103699040 A CN 103699040A CN 201310729470 A CN201310729470 A CN 201310729470A CN 103699040 A CN103699040 A CN 103699040A
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CN
China
Prior art keywords
signal
interface
monitoring
connects
main frame
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Pending
Application number
CN201310729470.7A
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Chinese (zh)
Inventor
徐大贵
江海
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Henan Splendor Science and Technology Co Ltd
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Henan Splendor Science and Technology Co Ltd
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Application filed by Henan Splendor Science and Technology Co Ltd filed Critical Henan Splendor Science and Technology Co Ltd
Priority to CN201310729470.7A priority Critical patent/CN103699040A/en
Publication of CN103699040A publication Critical patent/CN103699040A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a signal monitor, in particular to a separate portable signal monitor with a display and a monitoring host. The separate portable signal monitor comprises a monitoring host and n acquisition probes, wherein in the monitoring host, extension of multiple paths of CAN (Controller Area Network) interfaces is realized by adopting an embedded CPU (Central Processing Unit) and a CPLD (Complex Programmable Logic Device); the monitoring host is connected with n CAN interface signal acquisition extensions through a CAN controller chip; the CAN interface signal acquisition extensions are connected with different acquisition probes respectively in a matching way; meanwhile, the embedded CPU is connected with a WIFI (Wireless Fidelity) module through an Ethernet interface, and is connected with an iPad through the WIFI module to realize separation of the display and the monitoring host. The separate portable signal monitor is connected with the WIFI module via the existing Ethernet interface of the embedded CPU, the monitoring host is connected with the iPad through the extension WIFI module, so that separate design of the monitoring host and a display screen is realized, and convenience is brought to use.

Description

A kind of separating portable signal monitoring instrument
Technical field
The present invention relates to a kind of signal monitoring apparatus, especially relate to a kind of separating portable signal monitoring instrument.Be used in the railway system, an equipment item or a certain electrical specification are tested; As the detection of track circuit microcomputer, signalling arrangement insulation against ground monitoring, electric point machine are detected online, teleseme show state monitoring etc.
Background technology
The signal microcomputer monitoring system that at present full railway is being promoted the use of, for the safety of transportation by railroad has been made very large contribution.But signal microcomputer monitoring system is generally all arranged on signal Machine Room, according to designing requirement, the state of signalling arrangement is gathered, but in searching some special failure processes, can find that the point that will measure may be within the scope of monitoring.And on the station of a large amount of non-main lines, also do not possess the condition of whole equipment microcomputer detecting systems, and some recessive intermittent defects are difficult to again find and record by general conventional instrument instrument.
At present, according to the difference of the application mode of system, monitor of the railway signal equipment can be divided into: three kinds of fixed, portable and vehiculars, fixed monitoring equipment is arranged on a fixed location, and pre-designed sampled point is measured and record.As centralized signal supervision system, track switch gap warning, intelligent filament panalarm etc.Vehicular monitoring equipment is arranged on electricity business instruction carriage or moving inspection car, to managing the equipment utilization states such as signal demonstration, cab signal and track circuit of interior main line, automatically detects and data processing, for carrying out rational maintenance, provides foundation.The monitoring equipment collaborative work of these three kinds of forms, can make signalling arrangement in complete monitoring range.
Portable set occurs with the form of instrument conventionally, has the function of an equipment item or a certain electrical specification being carried out to further detection and diagnosis, as CD96 shift frequency test chart, goat tension tester, Insulation test table etc.These instrument generally all manufacture and design according to specific functional requirement, and function ratio is more single, only can realize than more completely measuring for specific demand.Be limited to the restriction of memory capacity, storage capacity when this class instrument often lacks test data long simultaneously.
And traditional portable instrument adopts display screen and the integrated design of monitoring main frame conventionally, can only be at main frame annex when using observation, distance is restricted.
Therefore the portable signal monitor that need to research and develop a kind of flexible economy as signal microcomputer monitoring system supplement and perfect, further meet the needs of signalling arrangement safe operation and maintenance job.
Summary of the invention
Separating portable signal monitoring instrument of the present invention, utilize the existing Ethernet interface of embedded type CPU to realize and being connected of WIFI module, by the WIFI module realization monitoring main frame of expansion and being connected of iPad panel computer, realized and will monitor main frame and display screen separate design, easy to use.
The technical solution adopted in the present invention is:
A kind of separating portable signal monitoring instrument, comprise monitoring main frame and n acquisition probe, described n is greater than 1 natural number, described monitoring main frame adopts embedded type CPU and CPLD to realize the expansion of multichannel CAN interface, described embedded type CPU connects CPLD by bus transfer device, described CPLD is connected with n CAN controller chip, described monitoring main frame connects n CAN interface signal by CAN controller chip and gathers extension set, described CAN interface signal gathers extension set and connects from different acquisition probe couplings respectively, described embedded type CPU connects WIFI module by its Ethernet interface simultaneously, by described WIFI module, be connected with iPad panel computer, realize and show and monitor the separated of main frame, described CAN interface signal gathers extension set and comprises dsp chip and signal collection modulation circuit, with the linear conditioning of signal that acquisition probe is collected, arrive in the ADC range ability of CPU.
Described separating portable signal monitoring instrument, embedded type CPU adopts arbitrary money PowerPC processor of the MPC82 of Freescale company series, the corresponding bus transfer device that connects of described PowerPC processor data bus, address bus port, sheet choosing and look-at-me port, the corresponding CPLD that connects of described bus transfer device data bus, address bus port, sheet choosing and look-at-me port.
Described separating portable signal monitoring instrument, CAN interface signal gathers extension set dsp chip and adopts TMS320F28069; At described CAN controller chip and output terminal, be provided with CAN buffer circuit, to realize the physical isolation between many CAN interface, described CAN controller chip connects CAN interface signal by CAN buffer circuit and gathers extension set.
Invention beneficial effect:
1, separating portable signal monitoring instrument of the present invention, it is the acquisition principle based on centralized signal supervision system, portable and the dirigibility that has absorbed test instrumentation produces, the portability of instrument and the security of monitoring system sampling have been had concurrently, can to the state of signalling arrangement, test flexibly, make the work of survey crew simpler, comfortable, directly perceived, also solved and when other portable equipment is measured, to have needed the drawback that personnel are many.Can mate various signal acquisition probe, complete function is various, easy to use.
2, separating portable signal monitoring instrument of the present invention, range of application is between portable signal monitor and microcomputer detecting system, both can as monitoring system, realize record and the playback of test data, also can easily signalling arrangement comprehensively be measured flexibly as instrument.Can collect the electric index not relating in standard microcomputer detecting system, can provide more foundation for equipment fault analysis.
3, separating portable signal monitoring instrument of the present invention, utilize the existing Ethernet interface of embedded type CPU to realize and being connected of WIFI module, WIFI module by expansion realizes being connected of portable main machine and iPad panel computer, has realized and will monitor main frame and display screen separate design, easy to use.Adopt iPad panel computer, within the scope of WIFI transmission range, observation monitoring result that can be very convenient, comfortable.
Accompanying drawing explanation
Fig. 1 is the structural representation of separating portable signal monitoring instrument of the present invention;
Fig. 2 is the principle schematic of separating portable signal monitoring instrument of the present invention.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1
Referring to Fig. 1, Fig. 2, separating portable signal monitoring instrument of the present invention, comprise monitoring main frame 2 and n acquisition probe 5, described n is greater than 1 natural number, described monitoring main frame 2 adopts embedded type CPU and CPLD to realize the expansion of multichannel CAN interface, described embedded type CPU connects CPLD by bus transfer device, described CPLD is connected with n CAN controller chip, described monitoring main frame 2 connects n CAN interface signal collection extension set by CAN controller chip, and (in Fig. 1, label 3 is that 1# gathers extension set, label 4 is 2# collection extension set), described CAN interface signal gathers extension set and connects from different acquisition probe couplings respectively, described embedded type CPU connects WIFI module by its Ethernet interface simultaneously, by described WIFI module and iPad panel computer 1(handheld terminal) be connected, realize and show and monitor the separated of main frame, described CAN interface signal gathers extension set and comprises dsp chip and signal collection modulation circuit, with the linear conditioning of signal that acquisition probe 5 is collected, arrive in the ADC range ability of CPU.
Described embedded type CPU adopts arbitrary money PowerPC processor of the MPC82 of Freescale company series, the corresponding bus transfer device that connects of described PowerPC processor data bus, address bus port, sheet choosing and look-at-me port, the corresponding CPLD that connects of described bus transfer device data bus, address bus port, sheet choosing and look-at-me port.
Embodiment 2
Referring to Fig. 1, Fig. 2, the separating portable signal monitoring instrument of the present embodiment, the difference of itself and embodiment 1 is: embedded type CPU is used Freescale high-performance low-power-consumption PowerPC processor MPC8247, high primary frequency 400MHz, MPC8247 utilizes RTL8201CP and HR601680 to realize Ethernet interface.Many CAN Interface Expanding is realized by programmable logic device (CPLD), specifically can adopt EPM7128STI100, mainly completes the sheet choosing of many CAN interface and the realization of look-at-me, and the driving force of data, address wire is strengthened.CAN interface signal gathers linear the conditioning in the ADC range ability of CPU of signal that extension set uses dsp chip TMS320F28069 and signal collection modulation circuit that probe is collected; Acquisition probe becomes 0-+3.3V voltage signal by gathering discharge circuit 4-20mA current signal, then by RC filtering, signal is sent in the sheet of CPU in ADC acquisition channel, carries out signal processing after completing the conversion of analog quantity and digital quantity.
In Fig. 2, utilize embedded type CPU to expand 4 road CAN, between each CAN interface, realize physical isolation, and and external interface between realize photoelectricity isolation; And utilize CAN interface to connect CAN extension set, by exchanges data and protocol conversion between CAN Interface realization main frame and CAN extension set.
Separating portable signal monitoring instrument of the present invention, detects main frame as separating portable signal monitoring instrument system control center, is responsible for each CAN interface signal and gathers the acquisition configuration of extension set, the collection of Information Monitoring and storage.Monitoring main frame adopts the PowerPC processor of damascene structures, can expand as required communications interface unit, and adopts can to communicate by letter between CAN extension set.PowerPC processor self is with 2 road Ethernet interfaces and 5 road serial ports, and wherein serial ports He Yi road, a road Ethernet interface is used to do program in the debug phase and downloads debugging use.Monitoring host configuration USB mouth and configuration DOM dish interface (can connect 512M--8G DOM dish) can be derived Information Monitoring under manual operation, also can download on handheld terminal, to realize off-line and consult.
Monitoring main frame does not arrange display, and man-machine interactive operation all realizes by handheld terminal.Handheld terminal adopts 7 cun or the panel computer of 9 cun with WIFI interface, and adopts WiFi to be connected between monitoring main frame, and we adopt an other road network mouth of CPU to expand WIFI interface, and the module that turns WIFI with network is expanded WIFI interface; Realize exchanges data and protocol conversion between monitoring main frame and iPad panel computer, realize real-time demonstration and the historical track playback of monitoring main frame image data.The main frame of so just having realized portable equipment is separated with display terminal.
CAN interface signal gathers the processing enter that extension set is data, and the analog quantity information that receiving transducer sends, selects applicable data processing method to be converted into corresponding digital format according to Configuration Type, above delivers to monitoring main frame.Because the CPU using now there is no CAN interface, we adopt CAN protocol controller to expand a plurality of CAN interfaces.We adopt SJA1000T to realize the expansion of many CAN interface at present.CAN transceiver adopts CTM8251.Except being arranged on the I type CAN extension set of indoor use, can also configure and adopt carrier communication pattern, by signal cable, connect and be arranged in outdoor CAN extension set, can realize collection and record to outdoor signal equipment electrical specification index.Under this pattern, only need in portable main machine, install the plate of supporting carrier communication function additional.
Acquisition probe adopts Miniaturization Design, according to the difference of collection signal, designs corresponding unit clamp, and insulating power supply adopts the design of AC/DC universal, and the range of each probe is adjustable, in the kind that guarantees to reduce under the convenient prerequisite patching probe as far as possible.In probe, realize the isolation of a secondary singal, isolation voltage is not less than AC2500V, and input impedance is not less than 1M ohm, and fuse is set and PTC protects in probe.
Separating portable signal monitoring instrument of the present invention, by the powerful processing power of embedded type CPU, realize the conversion of different agreement between Ethernet data and CAN normal data and again unpack, packing data; Realize data interaction, processing between monitoring main frame and iPad panel computer; Wherein master cpu completes that many CAN interface is selected, the data transmit-receive processing between many CAN interface and forwarding, WIFI communication process, lithium cell charging process; Many CAN controller chip completes the realization of the standard CAN agreement of data; CAN buffer circuit completes the physical isolation between many CAN interface.
After CAN extension set starts, first-selection determines whether the configuration information from monitoring main frame, do not process, to monitoring main frame, send configuring request always, once receive after the effective configuration information of monitoring main frame, the configuration information providing according to monitoring main frame judges the type of input signal, calculates the actual signal information of each passage according to its fixing operation program, and according to CAN communication protocol, the CAN communication port by CAN extension set is uploaded to monitoring main frame by corresponding monitoring information.
Separating portable signal monitoring instrument of the present invention, the monitoring target of acquisition probe has following a few class: 1) track circuit monitoring: the receiver voltage of 25Hz phase-sensitive track circuits; The receiver voltage of 480 track circuits; The merit of ZPW2000 track circuit goes out voltage, cable analog network voltage, rail and enters that voltage, rail go out 1 voltage, rail goes out 2 voltages, sends electric current, received current; 2) point machine monitoring: switch indication voltage; Switch indication electric current; 3) power supply panel monitoring: alternating voltage (tri-kinds of range 50V, 300V and 500V); DC voltage (two kinds of range 50V and 300V); Alternating current (tri-kinds of range 5A, 30A and 50A); DC voltage (two kinds of range 10A and 50A); Support power frequency and two kinds of patterns of 25Hz; 4) teleseme monitoring: Signal lighting electric current (range 1A), thereby can realize, an equipment item or a few electrical specifications are carried out to full test and writing function, contribute to realize the lateral comparison between distinct device and between different test item.

Claims (3)

1. a separating portable signal monitoring instrument, comprise monitoring main frame and n acquisition probe, described n is greater than 1 natural number, it is characterized in that: described monitoring main frame adopts embedded type CPU and CPLD to realize the expansion of multichannel CAN interface, described embedded type CPU connects CPLD by bus transfer device, described CPLD is connected with n CAN controller chip, described monitoring main frame connects n CAN interface signal by CAN controller chip and gathers extension set, described CAN interface signal gathers extension set and connects from different acquisition probe couplings respectively, described embedded type CPU connects WIFI module by its Ethernet interface simultaneously, by described WIFI module, be connected with iPad panel computer, realize and show and monitor the separated of main frame, described CAN interface signal gathers extension set and comprises dsp chip and signal collection modulation circuit, with the linear conditioning of signal that acquisition probe is collected, arrive in the ADC range ability of CPU.
2. separating portable signal monitoring instrument according to claim 1, it is characterized in that: described embedded type CPU adopts arbitrary money PowerPC processor of the MPC82 of Freescale company series, the corresponding bus transfer device that connects of described PowerPC processor data bus, address bus port, sheet choosing and look-at-me port, the corresponding CPLD that connects of described bus transfer device data bus, address bus port, sheet choosing and look-at-me port.
3. separating portable signal monitoring instrument according to claim 1 and 2, is characterized in that: described CAN interface signal gathers extension set dsp chip and adopts TMS320F28069; At described CAN controller chip and output terminal, be provided with CAN buffer circuit, to realize the physical isolation between many CAN interface, described CAN controller chip connects CAN interface signal by CAN buffer circuit and gathers extension set.
CN201310729470.7A 2013-12-25 2013-12-25 Separate portable signal monitor Pending CN103699040A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111645722A (en) * 2020-05-25 2020-09-11 哈尔滨市科佳通用机电股份有限公司 Locomotive signal application state on-vehicle analysis method and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101334667A (en) * 2007-06-26 2008-12-31 株洲南车时代电气股份有限公司 Locomotive status messages checking and diagnosis recording method and device
CN101424942A (en) * 2008-01-15 2009-05-06 北京交通大学 Distribution detection device for orienting rail traffic safety assessment
CN202602678U (en) * 2012-05-15 2012-12-12 河南辉煌科技股份有限公司 Expansion circuit with multiple CAN (Controller Area Network) channel interfaces
CN203689062U (en) * 2013-12-25 2014-07-02 河南辉煌科技股份有限公司 Separation type portable signal monitor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101334667A (en) * 2007-06-26 2008-12-31 株洲南车时代电气股份有限公司 Locomotive status messages checking and diagnosis recording method and device
CN101424942A (en) * 2008-01-15 2009-05-06 北京交通大学 Distribution detection device for orienting rail traffic safety assessment
CN202602678U (en) * 2012-05-15 2012-12-12 河南辉煌科技股份有限公司 Expansion circuit with multiple CAN (Controller Area Network) channel interfaces
CN203689062U (en) * 2013-12-25 2014-07-02 河南辉煌科技股份有限公司 Separation type portable signal monitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111645722A (en) * 2020-05-25 2020-09-11 哈尔滨市科佳通用机电股份有限公司 Locomotive signal application state on-vehicle analysis method and device

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