CN201878171U - Infrared remote fault diagnosis equipment - Google Patents
Infrared remote fault diagnosis equipment Download PDFInfo
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- CN201878171U CN201878171U CN2010206342090U CN201020634209U CN201878171U CN 201878171 U CN201878171 U CN 201878171U CN 2010206342090 U CN2010206342090 U CN 2010206342090U CN 201020634209 U CN201020634209 U CN 201020634209U CN 201878171 U CN201878171 U CN 201878171U
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Abstract
The utility model relates to infrared remote fault diagnosis equipment which comprises an original infrared remote fault diagnosis system, access equipment 1, access equipment 2, a data channel switch, an Ethernet switch, an embedded Ethernet module and a serial communication line, wherein the access equipment 1 and the access equipment 2 are data communication link access equipment, the access equipment 1 is used as a normal data channel and the access equipment 2 is used as a standby channel; the data channel switch is interconnected with the access equipment 1 and the access equipment 2 and then outputs one data channel to the Ethernet switch; the data channel switch is controlled by the embedded Ethernet module; the Ethernet switch is interconnected with the embedded Ethernet module and other equipment which are required to be locally accessed to an Ethernet; and the original infrared remote fault diagnosis system communicates with the embedded Ethernet module through the serial communication line and is connected with the power supplies of the access equipment 1 and the access equipment 2. By using the infrared remote fault diagnosis equipment, digital channels based on the Ethernet can be effectively monitored and the data communication link access equipment can be dynamically switched.
Description
[technical field]
The utility model is about a kind of railway electronic equipment, is meant a kind of infrared ray remote fault diagnosis equipment especially.
[background technology]
Railway 5T equipment is the important technology equipment that guarantees the railway freight-car safe operation, and concrete 5T is meant:
THDS (infrared hot box detection equipment)
TFDS (lorry operation troubles dynamic image checkout equipment)
TADS (freight car rolling bearing initial failure rail limit enter a higher school diagnostic device)
TPDS (lorry running status ground safety monitoring device)
TFDS (vehicle wheel is to fault, size dynamic detecting equipment)
TCDS (passenger vehicle operation safety monitoring equipment)
5T equipment is to realize the safety index of the relevant 5T of vehicle is monitored by the machine room that every 30Km a special use is set along the railway, and by Network Transmission to each workshop, show that center etc. is about security monitoring and guarantee department again.
China is vast in territory, and railway is with a varied topography along the line, has therefore brought certain difficulty in the maintenance of giving 5T equipment and the timely eliminating of fault; Simultaneously because of along with the updating of electric railway, the electric circumstance of railway periphery becomes increasingly complex, and can influence the safe operation of 5T equipment to a great extent; Thunderbolt, after high voltagehigh frequency crosstalks and enters the 5T machine room, 5T equipment catastrophe failure such as often occur crashing, communication equipment burns must need personnel to carry out in-situ processing; Along with the further construction of Chinese Railway, the working strength of the operation and maintenance department of former 5T equipment is increasing.
According to the 5T of Ministry of Railways Equipment service specification, must the time interval according to the rules carry out necessary service work such as first quarter moon inspection, monthly test to 5T equipment, some incipient fault origin causes of formation of equipment, in regular maintenance, just can be found, cause the potential fault of equipment in time not to be found apace like this.
Former infrared ray remote failure diagnosis system is to be passage with PSTN, with DTMF (dual-tone multifrequency, Dual Tone Multi Frequency) be data interactive mode, realized that use phone or computer and infrared ray failure diagnosis apparatus communicate and data interaction, long-range realized to 5T equipment power supply electrifying, have a power failure, reset, operating voltage monitoring, analog channel monitor function.In Chinese Railway the whole network, be widely used at present.
As shown in Figure 2, be the structured flowchart of existing a kind of infrared ray remote failure diagnosis system.This infrared ray remote failure diagnosis system comprises telephone circuit, DTMF transmission and decoding unit, audio playback circuit, single-chip microcomputer, AC220 relay control group, and voltage detection signal relay group.Described telephone circuit, AC220 relay control group, and voltage detection signal relay group all is connected to single-chip microcomputer.Described DTMF sends and decoding unit is connected to telephone circuit.Described audio playback circuit one end is connected to telephone circuit, and an end is connected to single-chip microcomputer.
Described telephone circuit has been realized input, the output of telephone signal.Realized the reception of DTMF order and detected data sending in the DTMF mode.Described DTMF sends and decoding unit has been realized the decoding that DTMF orders; Simultaneously can send dtmf signal.Described audio playback circuit has been realized the playing function of interactive voice.The work control of described chip microcontroller system.Described AC220 relay control group has realized that control appliance powers on, power failure, reset function.Described voltage detection signal relay group has realized using 1 road AD to detect the function of plurality of voltages, uses relay to form a multidiameter option switch, inserts different voltage to be detected according to the test needs.
But present infrared ray remote fault diagnosis equipment still has following shortcoming:
Shortcoming 1: can't realize fiber optic communication network and the inner ethernet channel of 5T machine room are monitored.
Existing remote fault diagnosis equipment only can detect the communications status of analog telephone channel, can not realize universal day by day digital communi-cations link access device is detected as optical fiber, ADSL etc.And in the physical device maintenance process, the data link access device that causes because of factors such as thunderbolt, voltage fluctuations, burn as optical transceiver, ADSL Modem etc., this moment, 5T equipment workshop can not confirm whether be that 5T device damage or data link access device damage accurately.Be unfavorable for the accurate location of fault and maintenance fast.
Shortcoming 2: can't do dynamic switching to outer net passages such as optical fiber, ADSL.
Existing 5T equipment machine room all has 2 way word passages, and one the tunnel uses as normal data communication, and other one the tunnel as standby, but the first via is when breaking down, and needs manually to the scene to realize the proper communication of data with in the extension wire access communications link.This kind manual switching mode, the personnel that need repairing are unfavorable for the fast quick-recovery of fault to execute-in-place.
[summary of the invention]
It is that main digital channel is effectively monitored that technical problem to be solved in the utility model is to provide a kind of can the realization Ethernet, and can do the infrared ray remote fault diagnosis equipment of dynamic switching to outer net passages such as optical fiber, ADSL.
The utility model solves the problems of the technologies described above by the following technical programs: a kind of infrared ray remote fault diagnosis equipment, comprise former infrared ray remote failure diagnosis system, also comprise first access device, second access device, data channel diverter switch, Ethernet switch, embedded ethernet module and null modem cable; Described first access device and second access device all are data link access devices, and first access device uses as data normal channel in the machine room, and second access device uses as data stand-by channel in the machine room; The described data channel diverter switch and first access device, second access device are interconnected, export one road Ethernet data passage then, carry out interconnected with RJ-45 interface mode and machine room local Ethernet switch; Described data channel diverter switch is subjected to the control of embedded ethernet module; Described Ethernet switch is with the embedded ethernet module and need the equipment of access network based on ethernet to carry out interconnected in this locality; Described former infrared ray remote failure diagnosis system uses its serial ports to communicate by null modem cable and embedded ethernet module; Former infrared ray remote failure diagnosis system connects the power supply of first access device and second access device.
Described first access device and second access device are optical transceiver or ADSL Modem.
Described this locality needs the equipment of access network based on ethernet to comprise that infrared hot box detection equipment, lorry operation troubles dynamic image checkout equipment, freight car rolling bearing initial failure rail limit enter a higher school diagnostic device, lorry running status ground safety monitoring device, vehicle wheel to fault, size dynamic detecting equipment, passenger vehicle operation safety monitoring equipment, and the train recognition system.
Described former infrared ray remote failure diagnosis system comprises telephone circuit, dual-tone multifrequency transmission and decoding unit, audio playback circuit, single-chip microcomputer, AC220 relay control group, and voltage detection signal relay group.Described telephone circuit, AC220 relay control group, and voltage detection signal relay group all is connected to single-chip microcomputer.Described DTMF sends and decoding unit is connected to telephone circuit.Described audio playback circuit one end is connected to telephone circuit, one end is connected to single-chip microcomputer, the power supply of described first access device and second access device is connected to this AC220 relay control group, and described single-chip microcomputer communicates by null modem cable and embedded ethernet module.
The advantage of the utility model infrared ray remote fault diagnosis equipment is:
1, can realize to Ethernet being that main digital channel is effectively monitored:
The user can be by the infrared ray workshop main frame, monitor and judge whether the external access network of local designated room and inner 5T apparatus figure passage unimpeded, and be shown to the user in mode intuitively.
The user can be by dialing infrared ray remote fault diagnosis equipment extension telephone, and each piece of digital channel command is monitored in input, can obtain final digital channel snoop results by voice mode.
2, can do dynamic switching to outer net passages such as optical fiber, ADSL:
The main frame of user by the infrared ray workshop can be done dynamic switching to the channel of the external access network of local designated room, and alternate channel is switched to current available data channels; Also alternate channel can be cancelled, recover the original channel that uses.
The user can be by dialing infrared ray remote fault diagnosis equipment extension telephone, and the digital channel order is switched in input, can realize alternate channel is switched to current available data channels; Also alternate channel can be cancelled, recover the original channel that uses.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the composition structured flowchart of the utility model infrared ray remote fault diagnosis equipment.
Fig. 2 is a kind of structured flowchart of former infrared ray remote failure diagnosis system.
[embodiment]
See also Fig. 1, the utility model infrared ray remote fault diagnosis equipment comprises access device 1, access device 2, data channel diverter switch, Ethernet switch, embedded ethernet module, former infrared ray remote failure diagnosis system, and null modem cable.
Described access device 1 is the data link access device, at the practical application scene may be: optical transceiver, ADSL Modem, but the interface of itself and machine room interconnected is the unified IEEE that meets
802.3 the Ethernet interface of interface specification, the physics binding post shows as the RJ-45 interface.Access device 1 uses as data normal channel in the machine room.
Described access device 2 also is the equipment same with access device 1, and access device 2 uses as data stand-by channel in the machine room.
Described data channel diverter switch and access device 1, access device 2 are interconnected, export one road Ethernet data passage then, carry out interconnected with RJ-45 interface mode and machine room local Ethernet switch.This data channel diverter switch is subjected to the control of embedded ethernet module, and selecting access device 1 by embedded ethernet module decision still is that the data channel of access device 2 is used as local access road.
Described Ethernet switch is the standard ethernet switch, and it is responsible for the external channel after selecting through the data channel diverter switch is inserted this Ethernet switch; Be responsible for simultaneously waiting other to need the equipment of access network based on ethernet to carry out interconnected in this locality embedded ethernet module, THDS (infrared hot box detection equipment) main frame, AEI (train recognition system).
Described embedded ethernet module is finished the ping order detecting to access device; Finish simultaneously to local THDS main frame, AEI and other need be linked into Ethernet equipment carry out ping order detecting.And will detect the result and be transferred to former infrared ray remote failure diagnosis system by null modem cable.This embedded ethernet module is carried out the operation of data channel switching controls according to the data channel switching command that sends, and this data channel switching command is sent by former infrared ray remote failure diagnosis system.
Described former infrared ray remote failure diagnosis system uses its serial ports and embedded ethernet module to communicate.Former infrared ray remote failure diagnosis system is responsible for receiving outside next data channel probe command, and probe command is sent to the embedded ethernet module by null modem cable; Receive the result after the embedded ethernet module detecting simultaneously, and the result is fed back to the operator in the mode of voice-and-data.Former infrared ray remote failure diagnosis system also is responsible for receiving the data channel switching command, and this order is transmitted to the embedded ethernet module; This equipment is responsible for closing no access device power supply according to current data passage switching command, the access device power supply of enabling simultaneously.
Please consulting Fig. 2 simultaneously, is an embodiment of described former infrared ray remote failure diagnosis system, comprises telephone circuit, DTMF transmission and decoding unit, audio playback circuit, single-chip microcomputer, AC220 relay control group, and voltage detection signal relay group.Described telephone circuit, AC220 relay control group, and voltage detection signal relay group all is connected to single-chip microcomputer.Described DTMF sends and decoding unit is connected to telephone circuit.Described audio playback circuit one end is connected to telephone circuit, and an end is connected to single-chip microcomputer.
Described telephone circuit has been realized input, the output of telephone signal.Realized the reception of DTMF order and detected data sending in the DTMF mode.Described DTMF sends and decoding unit has been realized the decoding that DTMF orders; Simultaneously can send dtmf signal.Described audio playback circuit has been realized the playing function of interactive voice.The work control of described chip microcontroller system.Described AC220 relay control group has realized that control appliance powers on, power failure, reset function.Access device 1 and 2 power supply just are connected to this AC220 relay control group, thereby have realized the power supply control to access device.Described voltage detection signal relay group has realized using 1 road AD to detect the function of plurality of voltages, uses relay to form a multidiameter option switch, inserts different voltage to be detected according to the test needs.Described single-chip microcomputer uses its serial ports and embedded ethernet module to communicate.
Described null modem cable is responsible for the data communication between former infrared ray remote failure diagnosis system and the embedded ethernet module.
The operating sequence of the utility model infrared ray remote fault diagnosis equipment is as described below.
1,5T machine room numeral access channel snoop-operations order:
Mode of operation 1: behind landline telephone or the former infrared ray remote failure diagnosis system of mobile phone dialing phone, through behind the identity validation, the user uses 302# order startup 5T machine room numeral access channel snoop-operations, at first former infrared ray remote failure diagnosis system can send to start monitors the Access Network order to the embedded ethernet module, the embedded ethernet module receives that this order back sends the IP address of 5 ping packets to current access device, wait for that then the ping bag returns, time-out time in regulation is embedded in return time and the data that the formula ethernet module is added up 5 ping bags of correspondence of receiving, checks the back and forms the snoop results message; Then the snoop results message is sent to former infrared ray remote failure diagnosis system by null modem cable, after former infrared ray remote failure diagnosis system receives this monitoring message, carry out interpretation of result, play to landline telephone or the mobile phone of dialing with voice mode then.
Give an example 1: when having received returning of 5 ping bags fully in the time-out time of regulation, then having play voice be: digital access channel monitors 5.
Give an example 2: when receiving any returning that 5 ping wrap in the time-out time of regulation, then playing voice be not: digital access channel monitors 0.
Mode of operation 2: monitor by the main frame in the infrared ray workshop on duty.Main frame at first sends by the former infrared ray remote failure diagnosis system of its passage in the infrared ray machine room of wanting to monitor and starts the access channel snoop command, former infrared ray remote failure diagnosis system can send the order of startup monitoring Access Network to the embedded ethernet module after receiving this order, the embedded ethernet module receives that this order back sends the IP address of 5 ping packets to current access device, wait for that then the ping bag returns, time-out time in regulation is embedded in return time and the data that formula ethernet module statistics is received corresponding 5 ping bag, checks the back and forms the snoop results message; Then the snoop results message is sent to former infrared ray remote failure diagnosis system by the serial ports that is connected with former infrared ray remote failure diagnosis system, after former infrared ray remote failure diagnosis system receives this monitoring message, this message is transmitted to the main frame of initiating monitoring, and main frame shows by the monitoring software interface.
2, THDS digital channel snoop-operations order in the 5T machine room:
Mode of operation 1: behind landline telephone or the former infrared ray remote failure diagnosis system of mobile phone dialing phone, through behind the identity validation, the user uses 303# order startup 5T machine room numeral access channel snoop-operations, at first former infrared ray remote failure diagnosis system can send to start monitors the THDS Host Command to the embedded ethernet module, the embedded ethernet module receives that this order back sends 5 ping packets to current THDS host IP address, wait for that then the ping bag returns, time-out time in regulation is embedded in return time and the data that formula ethernet module statistics is received corresponding 5 ping bag, checks the back and forms the snoop results message; Then the snoop results message is sent to former infrared ray remote failure diagnosis system by the serial ports that is connected with former infrared ray remote failure diagnosis system, after former infrared ray remote failure diagnosis system receives this monitoring message, carry out interpretation of result, play to landline telephone or the mobile phone of dialing with voice mode then.
Give an example 1: when in the time-out time of regulation, having received returning of 5 ping bags fully, then having play voice be: host data channel-monitoring 5.
Give an example 2: when in the time-out time of regulation, receiving any returning that 5 ping wrap, then playing voice be not: host data channel-monitoring 0.
Mode of operation 2: monitor by main frame in the infrared ray workshop on duty.Main frame at first sends by the infrared ray remote fault diagnosis equipment of its passage in the infrared ray machine room of wanting to monitor and starts the order of THDS host data channel-monitoring, former infrared ray remote failure diagnosis system can send the order of startup monitoring Access Network to the embedded ethernet module after receiving this order, the embedded ethernet module receives that this order back sends the IP address of 5 ping packets to current THDS main frame, wait for that then the ping bag returns, time-out time in regulation is embedded in return time and the data that formula ethernet module statistics is received corresponding 5 ping bag, checks the back and forms the snoop results message; Then the snoop results message is sent to remote failure diagnosis system by the serial ports that is connected with former infrared ray remote failure diagnosis system, after remote failure diagnosis system receives this monitoring message, this message is transmitted to the main frame of initiating monitoring, and main frame shows by the monitoring software interface.
3,5T system available digital passage snoop-operations order:
Send 5 ping by main frame in the infrared ray workshop on duty and wrap the THDS main process equipment of correspondence, each ping bag of statistics THDS main process equipment returns in the time-out time of regulation time, the hop count of process, data integrity, after forming accounting message, show at the host monitor software interface.
4, digital channel handover operation order:
Mode of operation 1: switch by landline telephone or mobile phone.
Behind landline telephone or the former infrared ray remote failure diagnosis system of mobile phone dialing phone, through behind the identity validation, the user uses the 401# order to use the operation of access device 1.Former infrared ray remote failure diagnosis system receives the power supply of at first closing access device 1 and access device 2 after this order, transmit then and use access device 1 to order the embedded ethernet module, after the embedded ethernet module receives this order, at first close access device 1 switch and access device 2 switches of data channel diverter switch, and then connection access device 1 switch, postback the data channel diverter switch then and switch the result that finishes to former infrared ray remote failure diagnosis system, after former infrared ray remote failure diagnosis system receives this return results, open access device 1 power supply, send then and open access device 1 power supply result to the embedded ethernet module, after the embedded ethernet module receives this result, initiate the corresponding THDS host service function of ping access device 1 and ping, what statistics access device 1 and THDS main frame ping wrapped in the time-out time of regulation returns, and the result is sent to former infrared ray remote failure diagnosis system.Former infrared ray remote failure diagnosis system is play to landline telephone of dialing or mobile phone by voice if ping is correct: data channel 1 handover success; Play if ping is incorrect: data channel 1 handoff failure.
Behind landline telephone or the former infrared ray remote failure diagnosis system of mobile phone dialing phone, through behind the identity validation, the user uses the 402# order to use the operation of access device 1.Former infrared ray remote failure diagnosis system receives the power supply of at first closing access device 1 and access device 2 after this order, transmit then and use access device 2 to order the embedded ethernet module, after the embedded ethernet module receives this order, at first close access device 1 switch and access device 2 switches of data channel diverter switch, and then connection access device 2 switches, postback the data channel diverter switch then and switch the result that finishes to former infrared ray remote failure diagnosis system, after former infrared ray remote failure diagnosis system receives this return results, open access device 2 power supplys, send then and open access device 2 power supply results to the embedded ethernet module, after the embedded ethernet module receives this result, initiate the corresponding THDS host service function of ping access device 2 and ping, what statistics access device 2 and THDS main frame ping wrapped in the time-out time of regulation returns, and the result is sent to former infrared ray remote failure diagnosis system.Former infrared ray remote failure diagnosis system is play to landline telephone of dialing or mobile phone by voice if ping is correct: data channel 2 handover success; Play if ping is incorrect: data channel 2 handoff failures.
Mode of operation 2: the main frame by infrared ray workshop on duty carries out the digital channel switching.
Main frame sends to former infrared ray remote failure diagnosis system by its digital channel and uses digital channel 1 order, former infrared ray remote failure diagnosis system receives the power supply of at first closing access device 1 and access device 2 after this order, transmit then and use access device 1 to order the embedded ethernet module, after the embedded ethernet module receives this order, at first close access device 1 switch and access device 2 switches of data channel diverter switch, and then connection access device 1 switch, postback the data channel diverter switch then and switch the result that finishes to former infrared ray remote failure diagnosis system, after former infrared ray remote failure diagnosis system receives this return results, open access device 1 power supply, send then and open access device 1 power supply result to the embedded ethernet module, after the embedded ethernet module receives this result, initiate the corresponding THDS host service function of ping access device 1 and ping, what statistics access device 1 and THDS main frame ping wrapped in the time-out time of regulation returns, and the result is sent to former infrared ray remote failure diagnosis system.Former infrared ray remote failure diagnosis system is transmitted to main frame with this result, and main frame shows to the operator by the interface.If ping correctly then interface display: data channel 1 handover success; If the incorrect interface display of ping: data channel 1 handoff failure.
Main frame sends to former infrared ray remote failure diagnosis system by its digital channel and uses digital channel 2 orders, former infrared ray remote failure diagnosis system receives the power supply of at first closing access device 1 and access device 2 after this order, transmit then and use access device 1 to order the embedded ethernet module, after the embedded ethernet module receives this order, at first close access device 1 switch and access device 2 switches of data channel diverter switch, and then connection access device 2 switches, postback the data channel diverter switch then and switch the result that finishes to former infrared ray remote failure diagnosis system, after former infrared ray remote failure diagnosis system receives this return results, open access device 2 power supplys, send then and open access device 2 power supply results to the embedded ethernet module, after the embedded ethernet module receives this result, initiate the corresponding THDS host service function of ping access device 2 and ping, what statistics access device 2 and THDS main frame ping wrapped in the time-out time of regulation returns, and the result is sent to former infrared ray remote failure diagnosis system.Former infrared ray remote failure diagnosis system is transmitted to main frame with this result, and main frame shows to the operator by the interface.If ping correctly then interface display: data channel 2 handover success; If the incorrect interface display of ping: data channel 2 handoff failures.
Claims (4)
1. infrared ray remote fault diagnosis equipment, comprise former infrared ray remote failure diagnosis system, it is characterized in that: also comprise first access device, second access device, data channel diverter switch, Ethernet switch, embedded ethernet module and null modem cable; Described first access device and second access device all are data link access devices, and first access device uses as data normal channel in the machine room, and second access device uses as data stand-by channel in the machine room; The described data channel diverter switch and first access device, second access device are interconnected, export one road Ethernet data passage then, carry out interconnected with RJ-45 interface mode and machine room local Ethernet switch; Described data channel diverter switch is subjected to the control of embedded ethernet module; Described Ethernet switch is with the embedded ethernet module and need the equipment of access network based on ethernet to carry out interconnected in this locality; Described former infrared ray remote failure diagnosis system uses its serial ports to communicate by null modem cable and embedded ethernet module; Former infrared ray remote failure diagnosis system connects the power supply of first access device and second access device.
2. infrared ray remote fault diagnosis equipment as claimed in claim 1 is characterized in that: described first access device and second access device are optical transceiver or ADSL Modem.
3. infrared ray remote fault diagnosis equipment as claimed in claim 1, it is characterized in that: described this locality needs the equipment of access network based on ethernet to comprise that infrared hot box detection equipment, lorry operation troubles dynamic image checkout equipment, freight car rolling bearing initial failure rail limit enter a higher school diagnostic device, lorry running status ground safety monitoring device, vehicle wheel to fault, size dynamic detecting equipment, passenger vehicle operation safety monitoring equipment, and the train recognition system.
4. infrared ray remote fault diagnosis equipment as claimed in claim 1, it is characterized in that: described former infrared ray remote failure diagnosis system comprises telephone circuit, dual-tone multifrequency sends and decoding unit, the audio playback circuit, single-chip microcomputer, AC220 relay control group, and voltage detection signal relay group, described telephone circuit, AC220 relay control group, and voltage detection signal relay group all is connected to single-chip microcomputer, described dual-tone multifrequency sends and decoding unit is connected to telephone circuit, described audio playback circuit one end is connected to telephone circuit, one end is connected to single-chip microcomputer, the power supply of described first access device and second access device is connected to this AC220 relay control group, and described single-chip microcomputer communicates by null modem cable and embedded ethernet module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206342090U CN201878171U (en) | 2010-11-30 | 2010-11-30 | Infrared remote fault diagnosis equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206342090U CN201878171U (en) | 2010-11-30 | 2010-11-30 | Infrared remote fault diagnosis equipment |
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| CN201878171U true CN201878171U (en) | 2011-06-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292174A (en) * | 2015-11-04 | 2016-02-03 | 南京富岛信息工程有限公司 | Infrared hot box audio channel fault diagnosing method based on signal features |
| CN108390763A (en) * | 2018-03-06 | 2018-08-10 | 深圳市巨联高科技有限公司 | PoE interchangers, internet protocol camera system and its automatic testing method |
-
2010
- 2010-11-30 CN CN2010206342090U patent/CN201878171U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292174A (en) * | 2015-11-04 | 2016-02-03 | 南京富岛信息工程有限公司 | Infrared hot box audio channel fault diagnosing method based on signal features |
| CN108390763A (en) * | 2018-03-06 | 2018-08-10 | 深圳市巨联高科技有限公司 | PoE interchangers, internet protocol camera system and its automatic testing method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20181130 |