CN204203397U - Electrification contact networks of rapid transit railway broken string autoalarm - Google Patents
Electrification contact networks of rapid transit railway broken string autoalarm Download PDFInfo
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- CN204203397U CN204203397U CN201420684345.9U CN201420684345U CN204203397U CN 204203397 U CN204203397 U CN 204203397U CN 201420684345 U CN201420684345 U CN 201420684345U CN 204203397 U CN204203397 U CN 204203397U
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Abstract
The utility model relates to a kind of autoalarm that may occur disconnection fault for monitoring electrification contact networks of rapid transit railway in power supply process, comprise by solar powered module, camera, communications transmit receiver module, displacement sensing monitoring module, embedded-type ARM computing machine controls processing module, structural member, cable, socket, housing, mounting bracket, directly the mounting bracket laying electrification contact networks of rapid transit railway broken string autoalarm is fixed in electrified contacting nets falling mound, install very convenient, overcome the problem of site environment transformation difficulty, realize electrification contact networks of rapid transit railway broken string automatic alarm and determine disconnection fault position rapidly and accurately in time, also can carry out regular or irregular inspection to contact net whenever and wherever possible to patrol and examine, safeguard increasing substantially electrified contacting nets maintenance repair and rob the efficiency of logical work, guarantee electric locomotive high-speed cruising safely and reliably on the line.
Description
Technical field
The utility model belongs to the automatic detection field of communications and transportation high-speed railway, is specifically related to a kind of autoalarm that may occur disconnection fault for monitoring electrification contact networks of rapid transit railway in power supply process.
Background technology
Electrification contact networks of rapid transit railway is the important component part in tractive power supply system, be responsible for and the electric energy obtained from traction substation is directly flowed to the vital task that electric locomotive uses, therefore the quality of contact net and duty will directly affect the movement capacity of electric railway.Because contact net is outdoor layout and not for subsequent use, load on circuit is again move along contact net along with the operation of electric locomotive and change, the normal operation that directly will affect tractive power supply system if break down even can interrupt the driving function of electric railway, so require that contact net all will guarantee to supply well electric locomotive electric energy to guarantee electric locomotive high-speed cruising safely and reliably on the line under any condition, therefore daily inspection and maintenance work is essential.Once the falling mound slippage of electrification contact networks of rapid transit railway or drop causing catenary cut off fault and cut off traffic, bring massive losses to transportation by railroad, thus the positioning searching of catenary cut off abort situation will be that maintenance repair is safeguarded and robs a vital ring in logical work.
At present, the also corresponding effective means of famine in catenary cut off abort situation fast finding and accurate location, sometimes even to carry out Ren Gong lookout and could finally determine disconnection fault position, maintenance repair is caused to safeguard and rob the inefficiency of logical work and the time of at substantial and manpower and materials, greatly have impact on the progress of robbing logical work, thus directly affects the normal transport ability of electric railway, be therefore badly in need of the fast finding solving electrification contact networks of rapid transit railway disconnection fault position and a difficult problem of accurately locating.
Utility model content
The utility model is difficult to timely fast finding for the particular location of current electrification contact networks of rapid transit railway disconnection fault and accurately locates and the inefficient difficult problem of maintenance repair maintenance work, well-designed a electrification contact networks of rapid transit railway broken string autoalarm, by solar powered module, camera, communications transmit receiver module, displacement sensing monitoring module, embedded-type ARM computing machine controls processing module, mounting structure etc. are incorporated into one, carry out monitoring in real time to realize electrification contact networks of rapid transit railway broken string automatic alarm and to determine disconnection fault position rapidly and accurately in time, regular or irregular inspection can be carried out to contact net whenever and wherever possible to patrol and examine, drastically increase electrified contacting nets maintenance repair safeguard and rob the efficiency of logical work.
The utility model solves the technical scheme that its technical matters adopts:
Electrification contact networks of rapid transit railway broken string autoalarm, comprise embedded-type ARM computing machine and control processor module, displacement sensing monitoring module, camera and communications transmit receiver module, it is characterized in that: described displacement sensing monitoring module comprises the signal conditioning circuit of displacement transducer and the cable connection being with it positioned at electrification contact networks of rapid transit railway scene, and the output terminal of described signal conditioning circuit is connected to embedded-type ARM computing machine and controls processor module; The output terminal of described camera is connected to embedded-type ARM computing machine and controls processor module; The output terminal that described embedded-type ARM computing machine controls processor module is connected to communications transmit receiver module; Also comprise solar powered module, described solar powered module comprises and is positioned at the on-the-spot solar panel of electrification contact networks of rapid transit railway and the lithium battery be attached thereto and charging and discharging management circuit thereof, and this module controls processor module, displacement sensing monitoring module, camera and communications transmit receiver module to ARM computing machine and powers.
Also comprise housing and power light, status indicator lamp, solar panel cable socket, the cable socket of displacement transducer, camera cable socket, the antenna socket of communications transmit receiver module and circuit board one and circuit board two; The management of charging and discharging circuit of described lithium battery and displacement transducer signal modulate circuit fixedly mount on circuit board one, described embedded-type ARM computing machine controls processor module circuit and communications transmit receiver module circuit is fixedly mounted on circuit board two, and described circuit board one and circuit board two are fixed on the upper cover of housing; Described housing is built-in with lithium battery, described housing fixedly mounts the antenna socket of power light, status indicator lamp, solar panel cable socket, the cable socket of displacement transducer, camera cable socket, communications transmit receiver module, described solar panel cable socket, at shell Ligation in vitro solar panel, is connected to lithium cell charging discharging management circuit in housing; Described camera cable socket is externally connected with camera at housing, even if connect embedded-type ARM machine control processor modular circuit in housing; The antenna socket of communications transmit receiver module, at shell Ligation in vitro external antenna, connects communications transmit receiver module circuit in housing; Described power light, status indicator lamp are connected to embedded-type ARM computing machine and control processor module circuit.
Described solar powered module adopts special low power dissipation design to be equipped with unique MPPT maximum power point tracking MPPT technology, reduces power consumption and fully utilizes sun power efficiently, meeting the requirement of field long time stability work;
Described camera completes the functions such as video capture, image information collecting, data compression, coded treatment, and additional infrared light filling function ensures blur-free imaging under various illumination condition;
Described communications transmit receiver module adopts SMT industry assembling, hardware arrangement adopt 3 independent barrier cover shield base band, radio-frequency (RF) power amplification, radio-frequency (RF) transceiver respectively, ensure that radio-frequency performance index is excellent, the embedded ICP/IP protocol of this module and multimedia message protocol, supported data transparent transmission, for sending the pictorial information of disconnection fault warning message, disconnection fault positional information and field condition accurately;
The change in displacement situation of described displacement sensing monitoring module Real-Time Monitoring contact net falling mound position always, adopt the signal conditioning circuit of well-designed stable precision, ensure that displacement sensing module has high sensitivity and stability, once displacement changes, displacement sensing monitoring module will control processing module to embedded-type ARM computing machine and send alarm triggering information;
Described embedded-type ARM computer control module supports the CPU of real-time simulation and Embedded Trace 32 ARM, microminiature LQFP packs, the serial communication interface of built-in wide region and jumbo on-chip SRAM, and with the high-capacity and high-speed flash storage embedded, memory interface and unique accelerating structure of 128 bit widths enable 32 codes run under maximum clock speed, for practical application provides large-scale buffer zone and powerful processing capacity, distinctive low power mode of operation can significantly reduce system cloud gray model power consumption, less installation dimension and very low power consumption are specially adapted to the control application of this device, the normal operation of this module in charge cooperation control whole system.
This device is in use once the contact net falling mound slippage of contact net generation disconnection fault control point or drop, contact net falling mound is caused to be subjected to displacement change, the displacement sensing monitoring module of this point of Real-Time Monitoring just controls processing module to embedded-type ARM computing machine and sends warning trigger pip, start camera floor picture, send disconnection fault warning message, disconnection fault positional information and photo site information by communications transmit receiver module.In addition also by sending specific command code, trigger the electrification contact networks of rapid transit railway broken string autoalarm being positioned at each control point and send the pictorial information of this place's positional information and field condition in time, thus achieve and the function of regularly or irregularly patrolling and examining is carried out to contact net whenever and wherever possible.
The beneficial effects of the utility model are:
Solar powered module, camera, communications transmit receiver module, displacement sensing monitoring module, embedded-type ARM computing machine are controlled processing module, mounting structure etc. and be incorporated into one, easy for installationly directly can be fixed in contact net falling mound, to overcome the problem of site environment transformation difficulty.Adopt special low power dissipation design to be equipped with unique MPPT maximum power point tracking MPPT technology, reduce power consumption and fully utilize sun power efficiently, meeting the requirement of field long time stability work; Additional infrared light filling function ensures camera blur-free imaging under various illumination condition; Communications transmit receiver module adopts SMT industry assembling, hardware arrangement adopts 3 independent barrier cover shield base band, radio-frequency (RF) power amplification, radio-frequency (RF) transceiver respectively, ensures that radio-frequency performance index is excellent; The signal conditioning circuit of well-designed stable precision, ensures that displacement sensing monitoring module has high sensitivity and stability; Embedded-type ARM computing machine controls the power consumption that the distinctive low power mode of operation of processing module significantly can reduce system cloud gray model, effectively extends the time of this device field continuous firing.The particular location that well-designed this electrification contact networks of rapid transit railway broken string autoalarm solves current catenary cut off fault is conscientiously difficult to timely fast finding and accurately locates and the inefficient difficult problem of maintenance repair maintenance work, achieve catenary cut off automatic alarm and timely accurate location information and the photo site information sending catenary cut off fault fast, regular or irregular inspection can be carried out to contact net whenever and wherever possible to patrol and examine, so that relevant department is understood at any time grasp on-the-spot actual conditions, computing machine also can be utilized to carry out the filing query processing of relevant information, drastically increase electrified contacting nets maintenance repair safeguard and rob the efficiency of logical work, guarantee electric locomotive high-speed cruising safely and reliably on the line.
accompanying drawing explanation:
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is structure side view of the present utility model; Wherein in figure, the antenna socket, 7 of 1 be upper cover, 2 be power light, 3 be solar panel cable socket, 4 be status indicator lamp, 5 to be camera cable socket, 6 be communications transmit receiver module is the cable socket, 8 of displacement transducer is housing;
Fig. 3 is structure front elevation of the present utility model; Wherein the signal conditioning circuit, 11 of 9 to be inner lithium battery, 10 be charging and discharging management circuits and displacement sensing that circuit board one comprises lithium battery controls the circuit such as processing module and communications transmit receiver module for circuit board two comprises embedded-type ARM computing machine.
Embodiment
As shown in Figure 1, electrification contact networks of rapid transit railway broken string autoalarm, comprise embedded-type ARM computing machine and control processor module 20, displacement sensing monitoring module 21, camera 22 and communications transmit receiver module 23, described displacement sensing monitoring module 21 comprises the signal conditioning circuit 25 of the displacement transducer 24 and cable connection being with it positioned at electrification contact networks of rapid transit railway scene, and the output terminal of described signal conditioning circuit 25 is connected to embedded-type ARM computing machine and controls processor module 20; The output terminal of described camera 22 is connected to embedded-type ARM computing machine and controls processor module 20; The output terminal that described embedded-type ARM computing machine controls processor module 20 is connected to communications transmit receiver module 23; Also comprise solar powered module 26, described solar powered module 26 comprises and is positioned at the on-the-spot solar panel 27 of electrification contact networks of rapid transit railway and the lithium battery 9 be attached thereto and the charging and discharging management circuit 28 be connected thereof, and described solar powered module 26 is controlled processor module 20, displacement sensor module 21 and communications transmit receiver module 23 to ARM computing machine and powers.
As Fig. 2 and as indicated at 3, housing 8 and power light 2, status indicator lamp 4, solar panel cable socket 3, the cable socket 7 of displacement transducer, camera cable socket 5, the antenna socket 6 of communications transmit receiver module and circuit board 1 and circuit board 2 11 is also comprised; The management of charging and discharging circuit 28 of described lithium battery and displacement transducer signal modulate circuit 25 fixedly mount on circuit board 1, described embedded-type ARM computing machine controls processor module circuit 20 and communications transmit receiver module circuit 23 is fixedly mounted on circuit board 2 11, and described circuit board 1 and circuit board 2 11 are fixed on the upper cover 1 of housing; Described housing 8 is built-in with lithium battery 9, described housing 8 fixedly mounts the antenna socket 6 of power light 2, status indicator lamp 4, solar panel cable socket 3, the cable socket 7 of displacement transducer, camera cable socket 5 and communications transmit receiver module; Described circuit board 1 is distributed with management of charging and discharging circuit 28 and the displacement transducer signal modulate circuit 25 of lithium battery, described circuit board 2 11 is distributed with embedded-type ARM computing machine and controls processor module circuit 20 and communications transmit receiver module circuit 23; Described solar panel cable socket 3, at shell Ligation in vitro solar panel 27, is connected to lithium cell charging discharging management circuit 9 in housing; Described camera cable socket 5, at housing 8 outer connection camera 22, connects embedded-type ARM computing machine and controls processor module circuit 20 and communications transmit receiver module circuit 23 in housing; The antenna socket 6 of communications transmit receiver module connects external antenna outside housing 8, connects communications transmit receiver module circuit 23 in housing; Described power light 2, status indicator lamp 4 are electrically connected to embedded-type ARM computing machine and control processor module circuit 20.
Described solar powered module 26 adopts special low power dissipation design to be equipped with unique MPPT maximum power point tracking MPPT technology, reduces power consumption and fully utilizes sun power efficiently, meeting the requirement of field long time stability work;
Described camera 22 completes the functions such as video capture, image information collecting, data compression, coded treatment, and additional infrared light filling function ensures blur-free imaging under various illumination condition;
Described communications transmit receiver module 23 adopts SMT industry assembling, hardware arrangement adopt 3 independent barrier cover shield base band, radio-frequency (RF) power amplification, radio-frequency (RF) transceiver respectively, ensure that radio-frequency performance index is excellent, the embedded ICP/IP protocol of this module and multimedia message protocol, supported data transparent transmission, for sending the pictorial information of disconnection fault warning message, disconnection fault positional information and field condition accurately;
Described displacement sensing monitoring module 21 adopts the signal conditioning circuit of well-designed stable precision, ensure that this module has high sensitivity and stability, the change in displacement situation of Real-Time Monitoring contact net falling mound position always, once displacement changes, controls processing module to embedded-type ARM computing machine and sends alarm triggering information;
Described embedded-type ARM computer control module 20 supports the CPU of real-time simulation and Embedded Trace 32 ARM, microminiature LQFP packs, the serial communication interface of built-in wide region and jumbo on-chip SRAM, and with the high-capacity and high-speed flash storage embedded, memory interface and unique accelerating structure of 128 bit widths enable 32 codes run under maximum clock speed, for practical application provides large-scale buffer zone and powerful processing capacity, distinctive low power mode of operation can significantly reduce system cloud gray model power consumption, less installation dimension and very low power consumption are specially adapted to the control application of this device, the normal operation of this module in charge cooperation control whole system.
The antenna socket 6 of power light 2, solar panel cable socket 3, status indicator lamp 4, camera cable socket 5, communications transmit receiver module, the cable socket 7 of displacement transducer and inner lithium battery 9 before use, are first fixed on housing 8 by the utility model; Then successively circuit board 2 11 and circuit board 1 are fixed on upper cover 1; Then with cable or wire, the cable socket 7 of solar panel cable socket 3, displacement transducer and inner lithium battery 9 are connected on circuit board 1, with cable or wire, the antenna socket 6 of power light 2, status indicator lamp 4, camera cable socket 5, communications transmit receiver module are connected on circuit board 2 11; By screw, upper cover 1 and housing 8 are secured together; Respectively solar panel, camera, external antenna, displacement transducer are connected on solar panel cable socket 3, camera cable socket 5, the antenna socket 6 of communications transmit receiver module and the cable socket 7 of displacement transducer successively by cable; Finally concentrate on mounting bracket by the electrification contact networks of rapid transit railway of compact broken string autoalarm, so far assembling is implemented complete.
The utility model is in use once the contact net falling mound slippage of contact net generation disconnection fault control point or drop, contact net falling mound is caused to be subjected to displacement change, the displacement sensing monitoring module of this point of Real-Time Monitoring just controls processing module to embedded-type ARM computing machine and sends warning trigger pip, start camera floor picture, send disconnection fault warning message, disconnection fault positional information and photo site information by communications transmit receiver module.In addition also by sending specific command code, trigger the electrification contact networks of rapid transit railway broken string autoalarm being positioned at each control point and send the pictorial information of this place's positional information and field condition in time, thus achieve and the function of regularly or irregularly patrolling and examining is carried out to contact net whenever and wherever possible.
Solar powered module 26, camera 22, communications transmit receiver module 23, displacement sensing monitoring module 21, embedded-type ARM computing machine are controlled processing module 20, mounting structure etc. and are incorporated into one by the utility model, easy for installationly directly can be fixed in contact net falling mound, to overcome the problem of site environment transformation difficulty.Adopt special low power dissipation design to be equipped with unique MPPT maximum power point tracking MPPT technology, reduce power consumption and fully utilize sun power efficiently, meeting the requirement of field long time stability work; Additional infrared light filling function ensures camera blur-free imaging under various illumination condition; Communications transmit receiver module adopts SMT industry assembling, hardware arrangement adopts 3 independent barrier cover shield base band, radio-frequency (RF) power amplification, radio-frequency (RF) transceiver respectively, ensures that radio-frequency performance index is excellent; The signal conditioning circuit of well-designed stable precision, ensures that displacement sensing monitoring module has high sensitivity and stability; Embedded-type ARM computing machine controls the power consumption that the distinctive low power mode of operation of processing module significantly can reduce system cloud gray model, effectively extends the time of this device field continuous firing.The particular location that well-designed this electrification contact networks of rapid transit railway broken string autoalarm solves current catenary cut off fault is conscientiously difficult to timely fast finding and accurately locates and the inefficient difficult problem of maintenance repair maintenance work, achieve catenary cut off automatic alarm and timely accurate location information and the photo site information sending catenary cut off fault fast, regular or irregular inspection can be carried out to contact net whenever and wherever possible to patrol and examine, so that relevant department is understood at any time grasp on-the-spot actual conditions, computing machine also can be utilized to carry out the filing query processing of relevant information, drastically increase electrified contacting nets maintenance repair safeguard and rob the efficiency of logical work, guarantee electric locomotive high-speed cruising safely and reliably on the line.
Claims (6)
1. electrification contact networks of rapid transit railway broken string autoalarm, comprise embedded-type ARM computing machine and control processor module, displacement sensing monitoring module, camera and communications transmit receiver module, it is characterized in that: described displacement sensing monitoring module comprises the signal conditioning circuit of displacement transducer and the cable connection being with it positioned at electrification contact networks of rapid transit railway scene, and the output terminal of described signal conditioning circuit is connected to embedded-type ARM computing machine and controls processor module; The output terminal of described camera is connected to embedded-type ARM computing machine and controls processor module; The output terminal that described embedded-type ARM computing machine controls processor module is connected to communications transmit receiver module; Also comprise solar powered module, described solar powered module comprises and is positioned at the on-the-spot solar panel of electrification contact networks of rapid transit railway and the lithium battery be attached thereto and charging and discharging management circuit thereof, and this module controls processor module, displacement sensing monitoring module, camera and communications transmit receiver module to ARM computing machine and powers.
2. a kind of electrification contact networks of rapid transit railway broken string autoalarm according to claim 1, is characterized in that: also comprise housing and power light, status indicator lamp, solar panel cable socket, the cable socket of displacement transducer, camera cable socket, the antenna socket of communications transmit receiver module and circuit board one and circuit board two; The management of charging and discharging circuit of described lithium battery and displacement transducer signal modulate circuit fixedly mount on circuit board one, described embedded-type ARM computing machine controls processor module circuit and communications transmit receiver module circuit is fixedly mounted on circuit board two, and described circuit board one and circuit board two are fixed on the upper cover of housing; Described housing is built-in with lithium battery, described housing fixedly mounts the antenna socket of power light, status indicator lamp, solar panel cable socket, the cable socket of displacement transducer, camera cable socket, communications transmit receiver module, described solar panel cable socket, at shell Ligation in vitro solar panel, is connected to lithium cell charging discharging management circuit in housing; Described camera cable socket at shell Ligation in vitro camera, even if connect embedded-type ARM machine control processor modular circuit in housing; The antenna socket of communications transmit receiver module, at shell Ligation in vitro external antenna, connects communications transmit receiver module circuit in housing; Described power light, status indicator lamp are connected to embedded-type ARM computing machine and control processor module circuit.
3. a kind of electrification contact networks of rapid transit railway broken string autoalarm according to claim 1, is characterized in that: described solar powered module adopts low power dissipation design and MPPT maximum power point tracking MPPT technology, realizes the power supply of other parts.
4. a kind of electrification contact networks of rapid transit railway broken string autoalarm according to claim 1, it is characterized in that: described communications transmit receiver module adopts SMT industry assembling, hardware arrangement adopt 3 independent barrier cover shield base band, radio-frequency (RF) power amplification, radio-frequency (RF) transceiver respectively, the embedded ICP/IP protocol of this module and multimedia message protocol, supported data transparent transmission, sends the pictorial information of disconnection fault warning message, disconnection fault positional information and field condition accurately.
5. a kind of electrification contact networks of rapid transit railway broken string autoalarm according to claim 1, it is characterized in that: described displacement sensing monitoring module adopts signal conditioning circuit, the change in displacement situation of Real-Time Monitoring contact net falling mound position, once displacement changes, controls processing module to embedded-type ARM computing machine and sends alarm triggering information.
6. a kind of electrification contact networks of rapid transit railway broken string autoalarm according to claim 1, it is characterized in that: described embedded-type ARM computer control module supports the CPU of real-time simulation and Embedded Trace 32 ARM, small-sized LQFP packaging, built-in serial communication interface and on-chip SRAM, and with the high speed flash storage of embedding, the memory interface of 128 bit widths and accelerating structure, 32 codes are run under maximum clock speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420684345.9U CN204203397U (en) | 2014-11-14 | 2014-11-14 | Electrification contact networks of rapid transit railway broken string autoalarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420684345.9U CN204203397U (en) | 2014-11-14 | 2014-11-14 | Electrification contact networks of rapid transit railway broken string autoalarm |
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| Publication Number | Publication Date |
|---|---|
| CN204203397U true CN204203397U (en) | 2015-03-11 |
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| CN201420684345.9U Expired - Fee Related CN204203397U (en) | 2014-11-14 | 2014-11-14 | Electrification contact networks of rapid transit railway broken string autoalarm |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391215A (en) * | 2014-11-14 | 2015-03-04 | 李晓丹 | Automatic alarming device for disconnection of electrified overhead contact system of high-speed railway |
| CN104748799A (en) * | 2015-04-20 | 2015-07-01 | 张伟龙 | Dynamic intelligent fault-monitoring and adjusting system and method for overhead contact system |
| CN109444634A (en) * | 2018-11-15 | 2019-03-08 | 国网山西省电力公司大同供电公司 | A kind of 10kV overhead transmission line lightning-caused breaking warning device based on crash sensor |
| CN111680530A (en) * | 2020-06-15 | 2020-09-18 | 郑州财经学院 | Textile equipment can be tracked to broken string based on RFID |
-
2014
- 2014-11-14 CN CN201420684345.9U patent/CN204203397U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391215A (en) * | 2014-11-14 | 2015-03-04 | 李晓丹 | Automatic alarming device for disconnection of electrified overhead contact system of high-speed railway |
| CN104748799A (en) * | 2015-04-20 | 2015-07-01 | 张伟龙 | Dynamic intelligent fault-monitoring and adjusting system and method for overhead contact system |
| CN104748799B (en) * | 2015-04-20 | 2017-03-08 | 张伟龙 | A kind of contact net dynamic and intelligent malfunction monitoring adjusts system and method |
| CN109444634A (en) * | 2018-11-15 | 2019-03-08 | 国网山西省电力公司大同供电公司 | A kind of 10kV overhead transmission line lightning-caused breaking warning device based on crash sensor |
| CN109444634B (en) * | 2018-11-15 | 2020-11-06 | 国网山西省电力公司大同供电公司 | 10kV overhead line thunderbolt broken string alarm device based on collision sensor |
| CN111680530A (en) * | 2020-06-15 | 2020-09-18 | 郑州财经学院 | Textile equipment can be tracked to broken string based on RFID |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20201114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |