CN2876928Y - Infrared ray shaft temp. detection channel on-line monitoring and managing system device - Google Patents
Infrared ray shaft temp. detection channel on-line monitoring and managing system device Download PDFInfo
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- CN2876928Y CN2876928Y CN 200420063617 CN200420063617U CN2876928Y CN 2876928 Y CN2876928 Y CN 2876928Y CN 200420063617 CN200420063617 CN 200420063617 CN 200420063617 U CN200420063617 U CN 200420063617U CN 2876928 Y CN2876928 Y CN 2876928Y
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Abstract
The utility model discloses an infrared bearing temperature detection channel installed on on-line monitoring and management system, which comprises an infrared channel on-line monitoring and management system whose major components are a front-end pretreatment circuit 2, a special fsk signal modem chip 3, an analog-to-digital converter, a microprocessor 5, UART 6, a modem 7, an embedded USB master controller 9, a mobile memory 10, an LCD display 11, a keyboard 12 and a real-time clock chip 13. The combination mode between the channel monitoring instrument and the management system machine is simple and flexible. The normal working temperature range of electronic circuit part of the channel monitoring instrument is wide, so the utility model can be applied to different on-site situations.
Description
Technical field:
The utility model is a kind of infrared ray passage on-line monitoring and management system that adopts computer technology and network technology.
Technical background:
Hot box, to cut axle be one of major accident factor that jeopardizes safety of railway traffic, and gently then derailing is heavy then can cause train overturning.Adopt the second generation infrared journal temperature detection system of computer technology and network technology to have automatic identification passenger-cargo carriage, test the speed automatically, automatic counting shaft with axle counter, skid identification and hot box identification, functions such as hot box dynamic tracking forecast.But, the equipment and technology of second generation infrared journal temperature detection system, communication link, networking mode complexity, this has just increased the difficulty that the technician regularly detects, keeps in repair, maintains this system; Moreover, the acquisition station of infrared journal temperature detection system is arranged on the suburb far away from the city usually, therefore site environment is abominable, especially in the Northeast of China, the low energy of temperature during winter reaches subzero 40 degrees centigrade, add and have inconvenient traffic, the technician reduces greatly to the chance of field observation fault.Even arrived the scene, irregularly the fault that takes place also makes us being difficult to catching.Like this, thus to understand rule that fault takes place and make correct Countermeasure and become extremely difficult; At last, detecting devices and communication line adhere to vehicle and electricity affair two departments separately, all can cause certain inconvenience in each side such as management, monitorings.Based on above-mentioned various reasons, the reliability of second generation infrared journal temperature detection system can not be fully up to expectations.
At present, domestic existing unit develops relevant infrared ray channel monitoring equipment.As the HW-1 THDS communication monitor of Zhengzhou Railway Administration vehicle safety inspection center development by being master controller with the 80C196 single-chip microcomputer, 10 AD that chip integration becomes are as the analog to digital converter of system, two-stage calculation amplifier is formed the adjustment circuit of measuring-signal, wherein secondary amplifier adopts the gain programmable operational amplifier, the non-volatile ram of record Monitoring Data, expansing serial interface and LCD are formed jointly simultaneously.16 single-chip microcomputer 80C196 are slightly inadequate on the digital signal processing algorithm ability, therefore are difficult to image data is done further to analyze; Present relatively high speed digital signal processor, its frequency of operation is lower, thereby is difficult to accomplish the real time on-line monitoring to communication line.Adopt non-volatile ram as memory device, finite capacity.No self-checking function, for monitoring equipment, its self-detection result can not be convincing.By the enlargement factor of the secondary amplifier of software control, response speed is slower.In addition, it can't accomplish the real-time remote transmission of failure message, and the failure message that each communication monitor can not be collected is managed concentratedly.
Anhui Province's mound reaches the two generations infra-red detection net fault locating instrument that railway application technology company limited develops.Fault locating instrument can be judged three kinds of fault types: power failure, communication disruption and acquisition station fault, but and the test channel bit error rate.Fault location test instrument main frame is made up of communication processor and code error tester, can survey 16 passages at most.This fault locating instrument does not possess to be analyzed and the on-line monitoring function, and the staff can't realize telemonitoring, complicated operation.
Summary of the invention:
The utility model purpose is to disclose a kind of infrared axle temperature detection passage on-line monitoring and administrative system apparatus.
The utility model is made up of infrared ray passage on-line monitoring and management system, and the channel monitoring instrument comprises: front end preprocessing circuit 2, special-purpose frequency shift keying signal modem chip 3, analog to digital converter 4, microprocessor 5, UART Universal Asynchronous Receiver Transmitter 6, modulator-demodular unit 7, Embedded USB Host system device 9, mobile memory 10, LCD 11, keyboard 12, real-time timepiece chip 13; Communication protocol definition the transformat of data between channel monitoring instrument and the management system machine; Communication mode refers to adopt MODEM to realize both sides' communication by telephone network; It is characterized in that: microprocessor 5 is primary processors of whole infrared ray channel monitoring instrument, finishes the computational analysis of related data and to the tasks such as logic control of peripheral components; The forward data acquisition channel of communication line signal 1, front end preprocessing circuit 2, special-purpose frequency shift keying signal modem chip 3, analog to digital converter 4, composition infrared ray channel monitoring instrument; Front end preprocessing circuit 2 is a pre-process circuit, mainly realizes the effect of impedance conversion and potential isolation; The output signal one tunnel of front end preprocessing circuit 2 inserts special-purpose frequency shift keying signal modem chip 3, and analog to digital converter 4 is inserted on another road; The output signal of special-purpose frequency shift keying signal modem chip 3 is the demodulation message information, and primary processor reads in the demodulation message information, and judges that whether it is effective message information, is used for the calculating of the bit error rate, the differentiation of communication disruption etc.; The output signal of analog to digital converter 4 is the discrete sampling value of communication line signal, primary processor is by the judgement to effective message information, trigger data acquisition, the effective value by calculating effective message information and carry out spectrum analysis, computer communication level value and percent harmonic distortion; The bidirectional data communication that UART Universal Asynchronous Receiver Transmitter 6, modulator-demodular unit 7, telephone line 8 are realized between infrared ray channel monitoring instrument and the management system machine; Microprocessor 5, Embedded USB Host system device 9, the mobile memory 10 common Embedded USB Host System that realize are finished writing and reading of failure message; LCD 11, keyboard 12 are finished the human-computer interaction interface function of infrared ray channel monitoring instrument; Real-time timepiece chip 13 provides time reference for system.
The utility model is at the deficiency of at present existing infrared channel monitoring means and method, and the infrared ray passage on-line monitoring and the management system of proposition are made up of channel monitoring instrument and management system machine two parts.The channel monitoring instrument adopts high speed digital signal processor as primary processor, finishes communication line real-time signal acquisition and analytical calculation, work such as the demodulation of message information; And the realization Embedded USB Host System, utilize high-capacity FLASH storer record failure message; Adopt external MODEM to finish and systematic manager between data transmission.Systematic manager is responsible for the working condition that automatic regular polling is respectively surveyed the channel monitoring instrument of website, and the different types of failure message of concentrated Classification Management.Realized analytical calculation to image data, the record of failure message and real-time Data Transmission, array mode simple and flexible between channel monitoring instrument and the management system machine, but the wider range of the electronic circuit of channel monitoring instrument part operate as normal, use at the scene that can be fit to different situations.
Description of drawings
Fig. 1 is monitoring of the present utility model and management system structured flowchart;
Fig. 2 is the utility model infrared ray channel monitoring instrument structured flowchart;
Fig. 3 is the utility model front end preprocessing circuit schematic diagram;
Fig. 4 is the special-purpose frequency shift keying signal modem chip of the utility model circuit theory diagrams;
Fig. 5 is the utility model analog-digital converter circuit schematic diagram;
Fig. 6 is the bidirectional data communication circuit theory diagrams between the utility model channel monitoring instrument and the management system machine;
Fig. 7 is the utility model Embedded USB Host system device circuit theory diagrams;
Fig. 8 is the utility model clock circuit schematic diagram.
Embodiment:
As shown in Figure 1, the composition of infrared axle temperature detection passage on-line monitoring and administrative system apparatus comprises: railway 33 acquisition stations 29,30,31,32 that are provided with along the line, many group channel monitoring instrument 25,27, systematic manager 23, communicate by letter with the systematic manager modulator- demodular unit 26,28,24 of usefulness of channel monitoring instrument connects the repeater 22 of central machine 21 and channel monitoring instrument.
As shown in Figure 2, the composition of road monitor comprises: front end preprocessing circuit 2, special-purpose frequency shift keying signal modem chip 3, analog to digital converter 4, microprocessor 5, UART Universal Asynchronous Receiver Transmitter 6, modulator-demodular unit 7, Embedded USB Host system device 9, mobile memory 10, LCD 11, keyboard 12, real-time timepiece chip 13; Communication protocol definition the transformat of data between channel monitoring instrument and the management system machine; As shown in Figure 6, communication mode refers to adopt MODEM to realize both sides' communication by telephone network; Microprocessor 5 is primary processors of whole infrared ray channel monitoring instrument, finishes the computational analysis of related data and to the tasks such as logic control of peripheral components; As shown in Figure 2, the forward data acquisition channel of communication line signal 1, front end preprocessing circuit 2, special-purpose frequency shift keying signal modem chip 3, analog to digital converter 4, composition infrared ray channel monitoring instrument; As shown in Figure 3, front end preprocessing circuit 2 is a pre-process circuit, mainly realizes the effect of impedance conversion and potential isolation; The output signal one tunnel of front end preprocessing circuit 2 inserts special-purpose frequency shift keying signal modem chip 3, and analog to digital converter 4 is inserted on another road; The output signal of special-purpose frequency shift keying signal modem chip 3 is the demodulation message information, and primary processor reads in the demodulation message information, and judges that whether it is effective message information, is used for the calculating of the bit error rate, the differentiation of communication disruption etc.; As shown in Figure 5, the output signal of analog to digital converter 4 is the discrete sampling value of communication line signal, and primary processor is by the judgement to effective message information, trigger data acquisition, effective value by calculating effective message information and carry out spectrum analysis, computer communication level value and percent harmonic distortion; As shown in Figure 6, the bidirectional data communication between UART Universal Asynchronous Receiver Transmitter 6, modulator-demodular unit 7, telephone line 8 realization infrared ray channel monitoring instrument and the management system machine; Microprocessor 5, Embedded USB Host system device 9, the mobile memory 10 common Embedded USB Host System that realize are finished writing and reading of failure message; LCD 11, keyboard 12 are finished the human-computer interaction interface function of infrared ray channel monitoring instrument; Real-time timepiece chip 13 provides time reference for system.
The utility model management system machine adopts the software of VC++ establishment to realize.The channel monitoring instrument adopts the high-speed floating point digital signal processor, connects by external MODEM and management system machine, and the realization of usb protocol realizes by the usb host controller chip in the Embedded USB Host System.
The utility model is bonded together the centralized and unified management of real-time collection, analytical calculation and the failure message of field data, can make the staff understand the real time execution situation of communication line timely; The communication line signal that collects inserts special-purpose frequency shift keying modem chip and analog to digital converter respectively behind pre-process circuit, by the judgement to effective message information, trigger A/D and gather; After data acquisition is finished, carry out the calculating of communication level, the message information bit error rate respectively, discrete sample signals is done spectrum analysis, finish the analysis of distorted signals situation in the signals transmission by fast fourier transform; If find to have abnormal conditions, then report to the police to supervisor by telephone network, simultaneously, deposit relevant informations such as fault data, time of origin in the FLASH mobile memory, the failure message of storage can also be on the LCD at the channel monitoring instrument and show, can select to check different failure message kinds by button.
The key technical indexes:
[1] measuring error (is benchmark with the 1kHz sine wave): the input effective value ± 5%;
[2] bandwidth: 200Hz～50kHz;
[3] input impedance: 1M Ω ± 10%;
[4] communication level measurement error :≤± 1dB;
[5] operating temperature range :-40 ℃ ~ 45 ℃;
[6] operating voltage: AC 220V ± 20%;
[7] frequency: 50Hz～60Hz;
[8] plant capacity:＜20W;
Modulation demodulation system: the V.23 agreement that meets CCITT (CCITT) regulation.
The utility model main performance
[1] measures and distinguishes transmission, incoming level;
[2] receive query message, calculate the bit error rate;
[3] the record communication line reaches release time unusually;
[4] communication signal is carried out spectrum analysis, by telephone wire real-time remote transmission fault information;
The waveform of the signal when [5] utilizing FLASH mobile memory record trouble information and fault to take place;
[6] monitor has self-checking function;
[7] can manage many acquisition stations simultaneously, and have the function of obtaining the acquisition station name of station automatically; Has the automatic correcting time function;
[8] supervisor has the autopolling and the manual function of poll, can import failure message from the FLASH mobile memory, and can screen all data, as required various types of faults, the fault that takes place in each time period is carried out statistical study.
The computing formula of correlative and definition
Whether the calculating of the bit error rate receives in the message by every of verification has error code to occur judging whether this message error code occurs.The actual formula that uses is as follows:
The message number of error code appears in n-;
N-receives message total.
The computing formula of communication level value:
B
u＝201g(U
x/0.775V)(dB)
To signal voltage u (t), sampling u (k), k=1,2, L, N, according to definition, voltage effective value U
xComputing formula be
The definition of percent harmonic distortion can calculate by following formula:
Wherein, u
iBe the each harmonic effective value.
[9] infrared ray passage on-line monitoring and management system
Claims (1)
1. infrared axle temperature detection passage on-line monitoring and administrative system apparatus, be made up of channel monitoring instrument and management system machine two parts, the channel monitoring instrument comprises: front end preprocessing circuit (2), special-purpose frequency shift keying signal modem chip (3), analog to digital converter (4), microprocessor (5), UART Universal Asynchronous Receiver Transmitter (6), modulator-demodular unit (7), Embedded USB Host system device (9), mobile memory (10), LCD (11), keyboard (12), real-time timepiece chip (13); The transformat of data between communication protocol definition channel monitoring instrument and the management system machine; Communication mode refers to adopt MODEM to realize both sides' communication by telephone network; It is characterized in that: microprocessor (5) is the primary processor of whole infrared ray channel monitoring instrument, finishes the computational analysis of related data and to the logic control of peripheral components; Communication line signal (1), front end preprocessing circuit (2), special-purpose frequency shift keying signal modem chip (3), analog to digital converter (4) are formed the forward data acquisition channel of infrared ray channel monitoring instrument; Front end preprocessing circuit (2) is realized impedance conversion and potential isolation; The output signal one tunnel of front end preprocessing circuit (2) inserts special-purpose frequency shift keying signal modem chip (3), and analog to digital converter (4) is inserted on another road; The output demodulation message information of special-purpose frequency shift keying signal modem chip (3), primary processor reads in the demodulation message information, and judges whether it is effective message information, calculates the bit error rate, differentiates communication disruption; The output signal of analog to digital converter (4) is the discrete sampling value of communication line signal, primary processor is to the judgement of effective message information, trigger data acquisition, the discrete sampling value and the spectrum analysis of calculating effective message information, computer communication level value and percent harmonic distortion; UART Universal Asynchronous Receiver Transmitter (6), modulator-demodular unit (7), telephone line (8) are realized the bidirectional data communication between infrared ray channel monitoring instrument and the management system machine; Microprocessor (5), Embedded USB Host system device (9), mobile memory (10) are formed Embedded USB Host System, writing and reading failure message; LCD (11) is the human-computer interaction interface of infrared ray channel monitoring instrument; Keyboard (12) and real-time timepiece chip (13) provide system time reference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420063617 CN2876928Y (en) | 2004-10-22 | 2004-10-22 | Infrared ray shaft temp. detection channel on-line monitoring and managing system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420063617 CN2876928Y (en) | 2004-10-22 | 2004-10-22 | Infrared ray shaft temp. detection channel on-line monitoring and managing system device |
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| Publication Number | Publication Date |
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| CN2876928Y true CN2876928Y (en) | 2007-03-07 |
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| CN 200420063617 Expired - Fee Related CN2876928Y (en) | 2004-10-22 | 2004-10-22 | Infrared ray shaft temp. detection channel on-line monitoring and managing system device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030018B (en) * | 2009-09-28 | 2013-01-16 | 西门子信号有限公司 | Attached peripheral data acquisition and distribution device for axis counting system |
| CN108051092A (en) * | 2017-11-30 | 2018-05-18 | 广汉科峰电子有限责任公司 | The optical modulation and demodulating system of thermosensitive resistance type high speed shaft temperature detector |
| CN108288366A (en) * | 2017-01-07 | 2018-07-17 | 华东交通大学 | Infrared and radio number passes detector |
-
2004
- 2004-10-22 CN CN 200420063617 patent/CN2876928Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030018B (en) * | 2009-09-28 | 2013-01-16 | 西门子信号有限公司 | Attached peripheral data acquisition and distribution device for axis counting system |
| CN108288366A (en) * | 2017-01-07 | 2018-07-17 | 华东交通大学 | Infrared and radio number passes detector |
| CN108051092A (en) * | 2017-11-30 | 2018-05-18 | 广汉科峰电子有限责任公司 | The optical modulation and demodulating system of thermosensitive resistance type high speed shaft temperature detector |
| CN108051092B (en) * | 2017-11-30 | 2020-03-31 | 广汉科峰电子有限责任公司 | Optical modulation and demodulation system of thermistor type high-speed shaft temperature detector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |