CN107401187A - A kind of cable shaft lid state detection method and device - Google Patents
A kind of cable shaft lid state detection method and device Download PDFInfo
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- CN107401187A CN107401187A CN201710677436.8A CN201710677436A CN107401187A CN 107401187 A CN107401187 A CN 107401187A CN 201710677436 A CN201710677436 A CN 201710677436A CN 107401187 A CN107401187 A CN 107401187A
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- 235000014676 Phragmites communis Nutrition 0.000 claims description 35
- 238000004891 communication Methods 0.000 claims description 33
- 238000010248 power generation Methods 0.000 claims description 25
- 238000010295 mobile communication Methods 0.000 claims description 24
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 15
- 229910052753 mercury Inorganic materials 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 10
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1481—Security devices, e.g. indicating unauthorised opening
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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Abstract
The present invention provides a kind of cable shaft lid state detection method and device, and its method includes：Receive wake up trigger signal caused by passive wake module；Whether the motion for judging cable well lid is permitted motion, if so, well lid abnormal motion configured information is not sent then, if it is not, then sending well lid abnormal motion configured information to network side by wireless channel.Cost is low, low in energy consumption, the degree of accuracy is high, has practicality.
Description
Technical Field
The invention relates to the field of power supply, in particular to a method and a device for detecting the state of a cable well cover.
Background
Cables laid underground face practical problems including stolen and cut cables, stolen or damaged well covers, which affect normal power supply and trip safety. According to the statistics of cities of certain provinces in China, 100 cable well covers are lost in one year, and 70 damaged well covers are also reached.
In order to prevent the cable from being stolen and cut, the following technologies are generated in the aspect of protecting the cable well cover:
the device disclosed by the invention is CN201510103354.3 with the name of 'an anti-theft cable well lid', and comprises a cylindrical base, an inner cover, an outer cover and a password lock, wherein the password lock comprises a password disk, a lock pin rod and an opening shaft, and the lower opening of the cylindrical base is provided with a flanging; the inner cover is covered on the lower opening of the cylindrical base in a sealing manner and is fixedly connected with the cylindrical base through a plurality of bolts; the outer cover is covered on the upper tube opening of the cylindrical base, and the lower surface of the outer cover is in a downwardly convex arc shape; the password disk is arranged in the outer cover; the outer cover is connected with the inner cover through the lock core rod; the password disk is connected with the lock core rod through the opening shaft.
The invention discloses an intelligent well lid system with the application number of CN201611011998.0 and the invention name of the intelligent well lid system and a networking communication monitoring method thereof, which comprises the following components: when the corresponding detection coil is disconnected and/or the well lid inclines and/or the well lid vibration displacement and/or the underground water level height exceeds a specified value, the electronic anti-theft device sends out an alarm signal; super mobile phone number user; the monitoring center comprises a server; the transmission modules are automatically connected with the corresponding electronic anti-theft devices in a networking mode, and the transmission modules and the electronic anti-theft devices form a well lid front-end system together; each transmission module comprises a repeater and a wireless concentrator, each wireless concentrator automatically logs in a monitoring center server and establishes networking configuration relations between the wireless concentrators and the repeaters and between the repeaters and the repeaters according to system networking configuration commands sent by the monitoring center server and super number mobile phone users.
The system disclosed by the invention is CN201410293350.1 and named as an intelligent online monitoring and early warning system for the operating condition of the cable, and comprises a monitoring terminal and a monitoring center master station, wherein the monitoring terminal collects various monitoring parameters (grounding current of a metal sheath of the cable, cable joint temperature, combustible gas content, toxic gas content, oxygen content, smoke, water level, well lid theft prevention and the like) of the operating condition of the cable in real time and reports collected data to the monitoring center master station in a timing manner through a wireless network; the monitoring center master station carries out storage, statistics, analysis, display and processing on the reported collected data in time, and has the functions of comprehensive data collection of cable operation, real-time monitoring of operation state, image data display, fault early warning and alarming, information data statistics and analysis and the like.
The invention provides a method and a device for detecting the state of a cable well lid, which are used for overcoming at least one of the defects of high power consumption, complex technology, high false alarm rate and high false alarm rate in the prior art.
Disclosure of Invention
The invention provides a method and a device for detecting the state of a cable well lid, which are used for overcoming at least one of the defects of high power consumption, complex technology, high false alarm rate and high false alarm rate in the prior art.
The invention provides a method for detecting the state of a cable well lid, which comprises the following steps:
receiving a wake-up trigger signal generated by a passive wake-up module;
and judging whether the movement of the cable well lid is permitted movement, if so, not sending abnormal well lid movement indication information, and if not, sending the abnormal well lid movement indication information to a network side through a wireless channel.
The invention provides a cable well lid state detection device, which comprises the following modules:
the passive wake-up module, the state detection module and the wireless communication module; wherein,
the passive awakening module is used for awakening the state detection module and/or transmitting working current to the state detection module and comprises at least one of a mercury tilt angle sensor, a metal ball tilt angle sensor, a reed pipe sensor and a vibration power generation device;
the state detection module is used for receiving the awakening trigger signal generated by the passive awakening module and judging whether the motion of the cable well lid is permitted motion or not, if so, the abnormal well lid motion indication information is not sent, and if not, the abnormal well lid motion indication information is sent to the network side through a wireless channel and comprises a data processor;
the wireless communication module is used for sending the indication information of the abnormal motion of the well lid and comprises an antenna, a radio frequency amplification circuit and an oscillator.
The device provided by the embodiment of the invention can overcome at least one of the defects of large power consumption, complex technology, high false alarm rate and high false alarm rate in the prior art. Low cost, low power consumption, high accuracy and practicability.
Additional features and advantages of the invention will be set forth in the description which follows.
Drawings
Fig. 1 is a flow chart of a method for detecting a state of a cable well lid according to an embodiment of the present invention;
fig. 2 is a schematic composition diagram of a cable well lid state detection device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a cable well lid state detection device according to an embodiment of the present invention.
Examples
The invention provides a cable well lid state detection device which is used for overcoming at least one of the defects of high power consumption, complex technology, high false alarm rate and high false alarm rate in the prior art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The following describes an example and an example of a method and an example of a device for detecting the state of the cable well lid provided by the invention with reference to the accompanying drawings.
Embodiment I, an example of a cable well lid state detection method
Referring to fig. 1, an embodiment of a method for detecting a state of a cable well lid provided by the invention includes the following steps:
step S110, receiving a wake-up trigger signal generated by a passive wake-up module;
and step S120, judging whether the movement of the cable well lid is allowable movement, if so, not sending abnormal well lid movement indication information, and if not, sending the abnormal well lid movement indication information to the network side through a wireless channel.
In this embodiment, the wake-up trigger signal generated by the passive wake-up module is used as a wake-up trigger signal and also used for transmitting a working current to the triggered circuit.
In this embodiment, the not sending the indication information of the abnormal motion of the well lid includes not sending the warning information.
In this embodiment, the permitted movement includes a movement that the manhole cover needs to undergo when the manhole cover needs to be opened for the purpose of maintenance or inspection of the cable.
Specifically, the motion that the well lid needs to experience includes that the well lid rotates, the slope of the well lid body, the translation of the well lid body, the well lid body moves up and the well lid body moves down in at least one kind of motion.
Specifically, before the manhole cover needs to be opened for maintenance or inspection purposes, control information is sent to a wireless receiver at the manhole cover through a wireless channel;
when the motion-permitting indication information or the motion-non-permitting indication information is received from the wireless channel, the level of the local memory or the trigger is set to the state indicated by the indication information.
The cable well cover is used for covering an inlet and an outlet of an underground cable laying tunnel.
Cable well lid includes outer well lid and interior well lid, the upper surface of outer well lid is for exposing on ground or road surface, outer well lid is located the upper portion of well lid.
The inner well cover is positioned below the outer well cover and covered by the outer well cover.
The method of the present embodiment, wherein,
the receiving of the wake-up trigger signal generated by the passive wake-up module includes at least one of the following steps:
receiving a power supply current delivered by the mercury tilt sensor being turned on;
receiving power supply current transmitted by the conduction of the metal ball inclination angle sensor;
receiving power supply current transmitted by the conduction of the reed switch sensor; and
receiving a supply current delivered by the vibration power generating device.
The mercury tilt angle sensor rolls mercury from a first position to a second position when the change of the tilt angle exceeds a preset angle or the vibration exceeds a certain intensity, the electrode is switched on at the second position, and the power supply supplies working current to the triggered circuit through the switched-on electrode.
When the inclination angle changes beyond a preset angle or the vibration exceeds a certain intensity, the metal ball rolls from the first position to the second position, the electrode is switched on at the second position, and the power supply supplies working current to the triggered circuit through the switched-on electrode.
The reed switch sensor is a magnetic action element, when the distance between the reed switch and the magnet exceeds a preset distance value, the magnetic field intensity acting on the reed switch becomes weaker or stronger, when the magnetic field intensity is higher than a specific threshold or lower than the specific threshold, two electrodes of the reed switch are conducted, and a power supply transmits working current to a triggered circuit through the conducted electrodes.
The vibration power generation device comprises a device for converting vibration energy into electric energy by utilizing an electromagnetic effect or converting vibration energy into electric energy by utilizing a piezoelectric effect, when vibration or displacement experienced by the vibration power generation device exceeds a specific value, the vibration power generation device generates an electric signal, and the electric signal generates a wake-up trigger signal and/or transmits working current for a circuit to be triggered.
Specifically, the vibration power generation device is generally used in unattended equipment, remote place equipment, places where batteries are not easy to replace and where vibration exists, and can be applied to places where trains vibrate, bridges vibrate, automobiles vibrate and the like, and external vibration energy is converted into electric energy to be supplied to power utilization such as signal transmission and small-power equipment.
The method of the present embodiment, wherein,
the passive awakening module is installed on the lower side of an outer well cover or an inner well cover of the cable maintenance wellhead.
Specifically, the mercury tilt angle sensor is arranged on the lower side of the outer well lid, is in rigid physical connection with the outer well lid and moves synchronously along with the movement of the outer well lid; or
The mercury tilt angle sensor is installed on the lower side of the inner well cover, and is in rigid physical connection with the inner well cover and moves synchronously along with the movement of the outer well cover.
Specifically, the metal ball inclination angle sensor is arranged on the lower side of the outer well lid, is in rigid physical connection with the outer well lid and moves synchronously along with the movement of the outer well lid; or
The metal ball tilt angle sensor is arranged on the lower side of the inner well cover, is in rigid physical connection with the inner well cover and moves synchronously along with the movement of the outer well cover.
Specifically, the reed switch sensor is arranged on the lower side of the outer well cover or the inner well cover, is in rigid physical connection with the outer well cover or the inner well cover and moves synchronously along with the movement of the outer well cover, when the inner well cover or the outer well cover is in a normal sealing state, a magnet is distributed at a position close to the reed switch sensor, the magnetic field of the magnet enables the electrode of the reed switch to be in a disconnected state, when the inner well cover or the outer well cover is away from the normal sealing state, the reed switch sensor is away from the magnet, and then the weakened magnetic field enables the electrode of the reed switch to be in a connected state; or
The reed switch sensor is arranged on the lower side of the outer or inner well cover, is in rigid physical connection with the well wall and does not move along with the movement of the outer well cover, when the inner or outer well cover is in a normal sealing state, a magnet is distributed on the lower side of the inner or outer well cover close to the position of the reed switch sensor, the magnetic field of the magnet enables the electrode of the reed switch to be in a disconnected state, when the inner or outer well cover is out of the normal sealing state, the magnet is separated from the reed switch sensor, and then the weakened magnetic field enables the electrode of the reed switch to be in a connected state.
Specifically, the vibration power generation device is arranged on the lower side of the outer or inner well cover, a rigid physical connection exists between the vibration power generation device and the outer or inner well cover, the vibration power generation device moves synchronously along with the movement of the outer well cover, an electrical connection exists between the vibration power generation device and the well wall, and when the inner or outer well cover leaves a normal cover sealing state, the electrical connection enables the vibration power generation device to generate current which is used as a trigger signal and/or used for transmitting working current for a triggered circuit; or
The vibration power generation device is in rigid physical connection with the well wall and in electrical connection with the outer or inner well cover, when the inner or outer well cover is out of a normal cover sealing state, the electrical connection enables the vibration power generation device to generate current, and the current serves as a trigger signal and/or transmits working current to a triggered circuit.
In particular, the electrical connection comprises a connection that can vibrate or whip the vibration generator;
the connection capable of enabling the vibration generator to vibrate comprises the steps that a sawtooth strip or a concave-convex strip moving along with the well cover is arranged on the vibration generator, the side face of the sawtooth strip or the concave-convex strip is in elastic extrusion with a blocking strip with a constant position, when the well cover moves, the sawtooth strip or the concave-convex strip vibrates on the surface of the blocking strip, and the vibration is transmitted to the vibration generator to enable the vibration generator to vibrate and generate electricity.
The method of the present embodiment, wherein,
the passive awakening module is installed on the lower side of an outer well cover of the cable maintenance wellhead.
The method of the present embodiment, wherein,
the method for judging whether the movement of the cable well lid is allowable movement comprises the following steps:
reading a motion-permitting identification mark;
if the motion permission identification mark is in a preset motion permission indication state, judging the motion of the cable well cover as a motion permission, and if the motion permission identification mark is in a preset motion non-permission indication state, judging the motion of the cable well cover as a motion non-permission;
or
Reading an unauthorized motion identification mark;
if the movement permission identification mark is in a preset movement permission indication state, the movement of the cable well cover is judged to be permission movement, and if the movement permission identification mark is in a preset movement permission indication state, the movement of the cable well cover is judged to be non-permission movement.
In particular, the permissible or impermissible motion signature is represented by a locally set level state of a memory or a flip-flop.
Specifically, the level state of the locally set memory or trigger is set according to control information received by a wireless channel: when the motion-permitting indication information or the motion-non-permitting indication information is received from the wireless channel, the level of the local memory or the trigger is set to the state indicated by the indication information.
Specifically, the wireless channel comprises a wireless channel between a wireless receiver installed on the lower side of the cable well lid and at least one of a wireless access network access point, a wireless mobile terminal, an RFID transmitter and an NFC transmitter.
Specifically, the wireless receiver installed on the lower side of the cable well cover comprises at least one of a wireless local area network receiver, a bluetooth receiver, a cellular mobile communication receiver, an RFID receiver and an NFC receiver.
Further, the wireless local area network receiver comprises an 802.11ah receiver;
the cellular mobile communications receiver comprises a receiver supporting sidelink (side-link) communications.
Further, the wireless access network access point comprises a wireless local area network node, a wireless node supporting the LoRa specification, and a communication access point supporting the 4G (fourth generation mobile communication)/5G (fifth generation mobile communication) technical specification;
the wireless mobile terminal intelligent terminal supports at least one of wireless local area network communication and Bluetooth communication side-link communication.
The method of the present embodiment, wherein,
the allowable motion identification flag or the unauthorized motion identification flag is set according to control information received from a wireless channel, and specifically includes:
the key is used to decrypt the licensed motion indication information or the unlicensed motion indication information received by the wireless channel.
The secret key is a dynamically updated secret key, and the specific updating method comprises the following steps:
performing key updating periodically or aperiodically through any one of a wireless local area network node, a wireless node supporting a LoRa (Long Range: a wireless transmission technology for spreading using a pseudo random sequence) specification, and a communication access point supporting a 4G (fourth generation mobile communication)/5G (fifth generation mobile communication) specification; or
The key update is performed through the RFID channel or the NFC channel periodically or aperiodically.
Preferably, the wlan node is a wlan node supporting 802.11ah specification.
The method of the present embodiment, wherein,
the sending of the indication information of abnormal motion of the well lid to the network side through the wireless channel comprises the following steps:
and sending the abnormal well lid motion indication information to at least one of a wireless local area network node, a wireless node supporting the LoRa specification, a wireless access point supporting the 4G (fourth generation mobile communication) specification and a wireless access point supporting the 5G (fifth generation mobile communication) specification by a wireless transmitter installed at or near the cable well lid.
Specifically, the indication information of abnormal motion of the well lid is sent in an encrypted mode.
The key used by the abnormal well lid movement indication information sent in an encryption mode is a dynamically updated key, and the specific updating method comprises the following steps:
performing key updating periodically or aperiodically through any one of a wireless local area network node, a wireless node supporting the LoRa specification, and a communication access point supporting the 4G (fourth generation mobile communication)/5G (fifth generation mobile communication) technical specification; or
The key update is performed through the RFID channel or the NFC channel periodically or aperiodically.
Specifically, the indication information of abnormal motion of the well lid comprises knowledge information of abnormal motion of the well lid; or
The indication information of at least one motion of the well lid body rotation, the well lid body inclination, the well lid body translation, the upward movement of the well lid body and the downward movement of the well lid body is included.
The method provided by the embodiment further comprises a multipoint joint alarm method, and specifically comprises the following steps:
the method provided by the embodiment further comprises a combined sending method of the alarm signal, and specifically comprises the following steps:
the alarm signal receiving module 240 adjacent to the well lid is used for receiving the alarm signal sent from the cable well mouth adjacent to or close to the cable well mouth where the alarm signal is located through any one of wireless and wired channels.
Specifically, the alarm signal sent from the cable wellhead adjacent to or close to the cable wellhead where the cable wellhead is located is received through any one of wireless and wired channels, wherein:
the wired channel is a wired transmission channel in the cable groove, and the wired transmission channel is transmitted through a cable or an optical cable;
the wireless channel is a wireless channel that transmits through a medium in the cable trough.
In this embodiment, the alarm signal receiving module 240 adjacent to the manhole cover sends the received alarm signal sent from the adjacent or nearby cable manhole cover to the network side through the wireless communication module 230;
an alarm signal receiving module 240 of an adjacent well lid is introduced, which receives an alarm signal sent by a cable well mouth adjacent or close to the cable well mouth where the alarm signal is located through any one of wireless and wired channels, so that multipoint parallel alarm is realized, the alarm signal can be reliably sent to a network side even if a wireless sending module fails or is shielded by a shielding network, and the reliability and the anti-damage capability of alarm signal transmission are improved.
Example II, example II of a cable well lid state detection device
Referring to fig. 2, an embodiment of a device for detecting a status of a cable manhole cover according to the present invention includes:
a passive wake-up module 210, a state detection module 220, and a wireless communication module 230; wherein,
the passive wake-up module 210 is configured to wake up the state detection module and/or deliver a working current to the state detection module, and includes at least one of a mercury tilt sensor, a metal ball tilt sensor, a reed pipe sensor, and a vibration power generation device;
the state detection module 220 is configured to receive a wake-up trigger signal generated by the passive wake-up module, and determine whether the motion of the cable well lid is a permitted motion, if so, not send well lid abnormal motion indication information, and if not, send well lid abnormal motion indication information to the network side through a wireless channel, where the state detection module includes a data processor;
the wireless communication module 230 is configured to send indication information of abnormal movement of the well lid, and includes an antenna, a radio frequency amplification circuit, and an oscillator.
In this embodiment, the wake-up trigger signal generated by the passive wake-up module is used as a wake-up trigger signal and also used for transmitting a working current to the triggered circuit.
In this embodiment, the not sending the indication information of the abnormal motion of the well lid includes not sending the warning information.
In this embodiment, the permitted movement includes a movement that the manhole cover needs to undergo when the manhole cover needs to be opened for the purpose of maintenance or inspection of the cable;
specifically, the motion that the well lid needs to experience includes that the well lid rotates, the slope of the well lid body, the translation of the well lid body, the well lid body moves up and the well lid body moves down in at least one kind of motion.
Specifically, before the manhole cover needs to be opened for maintenance or inspection purposes, control information is sent to a wireless receiver at the manhole cover through a wireless channel;
when the motion-permitting indication information or the motion-non-permitting indication information is received from the wireless channel, the level of the local memory or the trigger is set to the state indicated by the indication information.
The cable well cover is used for covering an inlet and an outlet of an underground cable laying tunnel.
Cable well lid includes outer well lid and interior well lid, the upper surface of outer well lid is for exposing on ground or road surface, outer well lid is located the upper portion of well lid.
The inner well cover is positioned below the outer well cover and covered by the outer well cover.
The present embodiment provides an apparatus, wherein,
the state detection module 220 is configured to perform an operation of receiving a wake-up trigger signal generated by a passive wake-up module, and includes at least one of the following steps:
receiving a power supply current delivered by the mercury tilt sensor being turned on;
receiving power supply current transmitted by the conduction of the metal ball inclination angle sensor;
receiving power supply current transmitted by the conduction of the reed switch sensor; and
receiving a supply current delivered by the vibration power generating device.
The mercury tilt angle sensor rolls mercury from a first position to a second position when the change of the tilt angle exceeds a preset angle or the vibration exceeds a certain intensity, the electrode is switched on at the second position, and the power supply supplies working current to the triggered circuit through the switched-on electrode.
When the inclination angle changes beyond a preset angle or the vibration exceeds a certain intensity, the metal ball rolls from the first position to the second position, the electrode is switched on at the second position, and the power supply supplies working current to the triggered circuit through the switched-on electrode.
The reed switch sensor is a magnetic action element, when the distance between the reed switch and the magnet exceeds a preset distance value, the magnetic field intensity acting on the reed switch becomes weaker or stronger, when the magnetic field intensity is higher than a specific threshold or lower than the specific threshold, two electrodes of the reed switch are conducted, and a power supply transmits working current to a triggered circuit through the conducted electrodes.
The vibration power generation device comprises a device for converting vibration energy into electric energy by utilizing an electromagnetic effect or converting vibration energy into electric energy by utilizing a piezoelectric effect, when vibration or displacement experienced by the vibration power generation device exceeds a specific value, the vibration power generation device generates an electric signal, and the electric signal generates a wake-up trigger signal and/or transmits working current for a circuit to be triggered.
Specifically, the vibration power generation device is generally used in unattended equipment, remote place equipment, places where batteries are not easy to replace and where vibration exists, and can be applied to places where trains vibrate, bridges vibrate, automobiles vibrate and the like, and external vibration energy is converted into electric energy to be supplied to power utilization such as signal transmission and small-power equipment.
The present embodiment provides an apparatus, wherein,
the passive wake-up module 210 is installed at the lower side of an outer well cover or an inner well cover of the cable maintenance wellhead.
Specifically, the mercury tilt angle sensor is arranged on the lower side of the outer well lid, is in rigid physical connection with the outer well lid and moves synchronously along with the movement of the outer well lid; or
The mercury tilt angle sensor is installed on the lower side of the inner well cover, and is in rigid physical connection with the inner well cover and moves synchronously along with the movement of the outer well cover.
Specifically, the metal ball inclination angle sensor is arranged on the lower side of the outer well lid, is in rigid physical connection with the outer well lid and moves synchronously along with the movement of the outer well lid; or
The metal ball tilt angle sensor is arranged on the lower side of the inner well cover, is in rigid physical connection with the inner well cover and moves synchronously along with the movement of the outer well cover.
Specifically, the reed switch sensor is arranged on the lower side of the outer well cover or the inner well cover, is in rigid physical connection with the outer well cover or the inner well cover and moves synchronously along with the movement of the outer well cover, when the inner well cover or the outer well cover is in a normal sealing state, a magnet is distributed at a position close to the reed switch sensor, the magnetic field of the magnet enables the electrode of the reed switch to be in a disconnected state, when the inner well cover or the outer well cover is away from the normal sealing state, the reed switch sensor is away from the magnet, and then the weakened magnetic field enables the electrode of the reed switch to be in a connected state; or
The reed switch sensor is arranged on the lower side of the outer or inner well cover, is in rigid physical connection with the well wall and does not move along with the movement of the outer well cover, when the inner or outer well cover is in a normal sealing state, a magnet is distributed on the lower side of the inner or outer well cover close to the position of the reed switch sensor, the magnetic field of the magnet enables the electrode of the reed switch to be in a disconnected state, when the inner or outer well cover is out of the normal sealing state, the magnet is separated from the reed switch sensor, and then the weakened magnetic field enables the electrode of the reed switch to be in a connected state.
Specifically, the vibration power generation device is arranged on the lower side of the outer or inner well cover, a rigid physical connection exists between the vibration power generation device and the outer or inner well cover, the vibration power generation device moves synchronously along with the movement of the outer well cover, an electrical connection exists between the vibration power generation device and the well wall, and when the inner or outer well cover leaves a normal cover sealing state, the electrical connection enables the vibration power generation device to generate current which is used as a trigger signal and/or used for transmitting working current for a triggered circuit; or
The vibration power generation device is in rigid physical connection with the well wall and in electrical connection with the outer or inner well cover, when the inner or outer well cover is out of a normal cover sealing state, the electrical connection enables the vibration power generation device to generate current, and the current serves as a trigger signal and/or transmits working current to a triggered circuit.
In particular, the electrical connection comprises a connection that can vibrate or whip the vibration generator;
the connection capable of enabling the vibration generator to vibrate comprises the steps that a sawtooth strip or a concave-convex strip moving along with the well cover is arranged on the vibration generator, the side face of the sawtooth strip or the concave-convex strip is in elastic extrusion with a blocking strip with a constant position, when the well cover moves, the sawtooth strip or the concave-convex strip vibrates on the surface of the blocking strip, and the vibration is transmitted to the vibration generator to enable the vibration generator to vibrate and generate electricity.
The present embodiment provides an apparatus, wherein,
the passive wake-up module 210 is installed on the underside of the outer well lid of the cable maintenance wellhead.
The present embodiment provides an apparatus, wherein,
the state detection module 220 is configured to perform an operation of determining whether the movement of the cable well lid is a permitted movement, and specifically includes the following steps:
reading a motion-permitting identification mark;
if the motion permission identification mark is in a preset motion permission indication state, judging the motion of the cable well cover as a motion permission, and if the motion permission identification mark is in a preset motion non-permission indication state, judging the motion of the cable well cover as a motion non-permission;
or
Reading an unauthorized motion identification mark;
if the movement permission identification mark is in a preset movement permission indication state, the movement of the cable well cover is judged to be permission movement, and if the movement permission identification mark is in a preset movement permission indication state, the movement of the cable well cover is judged to be non-permission movement.
In particular, the permissible or impermissible motion signature is represented by a locally set level state of a memory or a flip-flop.
Specifically, the level state of the locally set memory or trigger is set according to control information received by a wireless channel: when the motion-permitting indication information or the motion-non-permitting indication information is received from the wireless channel, the level of the local memory or the trigger is set to the state indicated by the indication information.
Specifically, the wireless channel comprises a wireless channel between a wireless receiver installed on the lower side of the cable well lid and at least one of a wireless access network access point, a wireless mobile terminal, an RFID transmitter and an NFC transmitter.
Specifically, the wireless receiver installed on the lower side of the cable well cover comprises at least one of a wireless local area network receiver, a bluetooth receiver, a cellular mobile communication receiver, an RFID receiver and an NFC receiver.
Further, the wireless local area network receiver comprises an 802.11ah receiver;
the cellular mobile communications receiver comprises a receiver supporting sidelink (side-link) communications.
Further, the wireless access network access point comprises a wireless local area network node, a wireless node supporting the LoRa specification, and a communication access point supporting the 4G (fourth generation mobile communication)/5G (fifth generation mobile communication) technical specification;
the wireless mobile terminal intelligent terminal supports at least one of wireless local area network communication and Bluetooth communication side-link communication.
The present embodiment provides an apparatus, wherein,
the allowable motion identification flag or the unauthorized motion identification flag obtained by the state detection module 220 is set according to the control information received from the wireless channel, and specifically includes:
the wireless communication module or the state detection module decrypts the licensed motion indication information or the unlicensed motion indication information received by the wireless channel using the key.
The secret key is a dynamically updated secret key, and the specific updating method comprises the following steps:
performing key updating periodically or aperiodically through any one of a wireless local area network node, a wireless node supporting a LoRa (Long Range: a wireless transmission technology for spreading using a pseudo random sequence) specification, and a communication access point supporting a 4G (fourth generation mobile communication)/5G (fifth generation mobile communication) specification; or
The key update is performed through the RFID channel or the NFC channel periodically or aperiodically.
Preferably, the wlan node is a wlan node supporting 802.11ah specification.
The present embodiment provides an apparatus, wherein,
the wireless communication module 230 is configured to execute sending of indication information of abnormal movement of the manhole cover to the network side through a wireless channel, and includes the following operation steps:
and sending the abnormal well lid motion indication information to at least one of a wireless local area network node, a wireless node supporting the LoRa specification, a wireless access point supporting the 4G (fourth generation mobile communication) specification and a wireless access point supporting the 5G (fifth generation mobile communication) specification by a wireless transmitter installed at or near the cable well lid.
Specifically, the indication information of abnormal motion of the well lid is sent in an encrypted mode.
The key used by the abnormal well lid movement indication information sent in an encryption mode is a dynamically updated key, and the specific updating method comprises the following steps:
performing key updating periodically or aperiodically through any one of a wireless local area network node, a wireless node supporting the LoRa specification, and a communication access point supporting the 4G (fourth generation mobile communication)/5G (fifth generation mobile communication) technical specification; or
The key update is performed through the RFID channel or the NFC channel periodically or aperiodically.
Specifically, the indication information of abnormal motion of the well lid comprises knowledge information of abnormal motion of the well lid; or
The indication information of at least one motion of the well lid body rotation, the well lid body inclination, the well lid body translation, the upward movement of the well lid body and the downward movement of the well lid body is included.
The device provided by the embodiment further comprises an alarm signal receiving module 240 adjacent to the well lid, and the module receives the alarm signal sent from the cable well mouth adjacent to or close to the cable well mouth where the module is located through any one of wireless and wired channels.
Specifically, the alarm signal sent from the cable wellhead adjacent to or close to the cable wellhead where the cable wellhead is located is received through any one of wireless and wired channels, wherein:
the wired channel is a wired transmission channel in the cable groove, and the wired transmission channel is transmitted through a cable or an optical cable;
the wireless channel is a wireless channel that transmits through a medium in the cable trough.
In this embodiment, the alarm signal receiving module 240 adjacent to the manhole cover sends the received alarm signal sent from the adjacent or nearby cable manhole cover to the network side through the wireless communication module 230;
an alarm signal receiving module 240 of an adjacent well lid is introduced, which receives an alarm signal sent by a cable well mouth adjacent or close to the cable well mouth where the alarm signal is located through any one of wireless and wired channels, so that multipoint parallel alarm is realized, the alarm signal can be reliably sent to a network side even if a wireless sending module fails or is shielded by a shielding network, and the reliability and the anti-damage capability of alarm signal transmission are improved.
The device of the present embodiment has a structure as shown in fig. 3.
In fig. 3, the manhole cover 310 is an inner manhole cover or an outer manhole cover.
For convenience of illustration, in fig. 3, the upper side (surface) of the manhole cover is drawn on the lower side of the manhole cover, and the lower side (surface) of the manhole cover is drawn on the upper side of the manhole cover.
As an arrangement mode, the passive wake-up module 210, the state detection module 220 and the wireless communication module 230 are all arranged on the lower side of the manhole cover 310; the passive wake-up module 210 is electrically connected with the state detection module 220, and the passive wake-up module 210 is electrically connected with a power supply loop of the state detection module 220; the state detection module 220 and the wireless communication module 230 are electrically connected, and the wireless communication module 230 sends the received control information to the state detection module 220 through the electrical connection, or the wireless communication module 230 receives data to be sent from the state detection module 220 through the electrical connection, where the data to be sent includes indication information of abnormal motion of the well lid.
Further, there is an electrical connection between the alarm signal receiving module 240 adjacent to the manhole cover and the wireless communication module 230, and the alarm signal receiving module 240 adjacent to the manhole cover transmits the alarm signal received by the alarm signal receiving module 240 adjacent to the manhole cover to the wireless communication module 230 through the electrical connection.
The device provided by the embodiment of the invention can be completely or partially realized by using an electronic technology and an automatic control technology; the method provided by the embodiment of the invention can be wholly or partially realized by software instructions and/or hardware circuits; the modules or units included in the device provided by the embodiment of the invention can be realized by adopting electronic components and electromagnetic conversion components.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
The invention provides a distance measuring device, which overcomes at least one of the defects of large power consumption, complex technology, high false alarm rate and high false alarm rate in the prior art. Low cost, low power consumption, high accuracy and practicability.
Claims (14)
1. A method for detecting the state of a cable well lid comprises the following steps:
receiving a wake-up trigger signal generated by a passive wake-up module;
and judging whether the movement of the cable well lid is permitted movement, if so, not sending abnormal well lid movement indication information, and if not, sending the abnormal well lid movement indication information to a network side through a wireless channel.
2. The method of claim 1, wherein,
the receiving of the wake-up trigger signal generated by the passive wake-up module includes at least one of the following steps:
receiving a power supply current delivered by the mercury tilt sensor being turned on;
receiving power supply current transmitted by the conduction of the metal ball inclination angle sensor;
receiving power supply current transmitted by the conduction of the reed switch sensor; and
receiving a supply current delivered by the vibration power generating device.
3. The method of claim 1, wherein,
the passive awakening module is installed on the lower side of an outer well cover or an inner well cover of the cable maintenance wellhead.
4. The method of claim 1, further comprising a combined sending method of the alarm signal, specifically comprising the steps of:
the alarm signal receiving module 240 adjacent to the well lid is used for receiving the alarm signal sent from the cable well mouth adjacent to or close to the cable well mouth where the alarm signal is located through any one of wireless and wired channels.
5. The method of claim 1, wherein,
the method for judging whether the movement of the cable well lid is allowable movement comprises the following steps:
reading a motion-permitting identification mark;
if the motion permission identification mark is in a preset motion permission indication state, judging the motion of the cable well cover as a motion permission, and if the motion permission identification mark is in a preset motion non-permission indication state, judging the motion of the cable well cover as a motion non-permission;
or
Reading an unauthorized motion identification mark;
if the movement permission identification mark is in a preset movement permission indication state, the movement of the cable well cover is judged to be permission movement, and if the movement permission identification mark is in a preset movement permission indication state, the movement of the cable well cover is judged to be non-permission movement.
6. The method of claim 5, wherein,
the allowable motion identification flag or the unauthorized motion identification flag is set according to control information received from a wireless channel, and specifically includes:
the key is used to decrypt the licensed motion indication information or the unlicensed motion indication information received by the wireless channel.
7. The method of claim 1, wherein,
the sending of the indication information of abnormal motion of the well lid to the network side through the wireless channel comprises the following steps:
and sending the abnormal well lid motion indication information to at least one of a wireless local area network node, a wireless node supporting the LoRa specification, a wireless access point supporting the 4G (fourth generation mobile communication) specification and a wireless access point supporting the 5G (fifth generation mobile communication) specification by a wireless transmitter installed at or near the cable well lid.
8. A cable well lid state detection device includes:
the passive wake-up module, the state detection module and the wireless communication module; wherein,
the passive awakening module is used for awakening the state detection module and/or transmitting working current to the state detection module and comprises at least one of a mercury tilt angle sensor, a metal ball tilt angle sensor, a reed pipe sensor and a vibration power generation device;
the state detection module is used for receiving the awakening trigger signal generated by the passive awakening module and judging whether the motion of the cable well lid is permitted motion or not, if so, the abnormal well lid motion indication information is not sent, and if not, the abnormal well lid motion indication information is sent to the network side through a wireless channel and comprises a data processor;
the wireless communication module is used for sending the indication information of the abnormal motion of the well lid and comprises an antenna, a radio frequency amplification circuit and an oscillator.
9. The apparatus of claim 8, wherein,
the state detection module is used for executing the operation of receiving the awakening trigger signal generated by the passive awakening module, and comprises at least one of the following steps:
receiving a power supply current delivered by the mercury tilt sensor being turned on;
receiving power supply current transmitted by the conduction of the metal ball inclination angle sensor;
receiving power supply current transmitted by the conduction of the reed switch sensor; and
receiving a supply current delivered by the vibration power generating device.
10. The apparatus of claim 8, wherein,
the passive awakening module is installed on the lower side of an outer well cover or an inner well cover of the cable maintenance wellhead.
11. The apparatus of claim 8, further comprising an alarm signal receiving module 240 adjacent to the manhole cover, the module receiving an alarm signal transmitted from a cable wellhead adjacent or near to the cable wellhead in which the module is located through any one of a wireless and a wired channel.
12. The apparatus of claim 8, wherein,
the state detection module is used for executing the operation of judging whether the movement of the cable well lid is permitted to move, and specifically comprises the following steps:
reading a motion-permitting identification mark;
if the motion permission identification mark is in a preset motion permission indication state, judging the motion of the cable well cover as a motion permission, and if the motion permission identification mark is in a preset motion non-permission indication state, judging the motion of the cable well cover as a motion non-permission;
or
Reading an unauthorized motion identification mark;
if the movement permission identification mark is in a preset movement permission indication state, the movement of the cable well cover is judged to be permission movement, and if the movement permission identification mark is in a preset movement permission indication state, the movement of the cable well cover is judged to be non-permission movement.
13. The apparatus of claim 12, wherein,
the allowable motion identification flag or the unauthorized motion identification flag acquired by the state detection module is set according to control information received from a wireless channel, and specifically includes:
the wireless communication module or the state detection module decrypts the licensed motion indication information or the unlicensed motion indication information received by the wireless channel using the key.
14. The apparatus of claim 8, wherein,
the wireless communication module is used for sending the indication information of abnormal motion of the well lid to the network side through a wireless channel, and comprises the following operation steps:
and sending the abnormal well lid motion indication information to at least one of a wireless local area network node, a wireless node supporting the LoRa specification, a wireless access point supporting the 4G (fourth generation mobile communication) specification and a wireless access point supporting the 5G (fifth generation mobile communication) specification by a wireless transmitter installed at or near the cable well lid.
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| CN201710677436.8A CN107401187A (en) | 2017-08-09 | 2017-08-09 | A kind of cable shaft lid state detection method and device |
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| CN201710677436.8A CN107401187A (en) | 2017-08-09 | 2017-08-09 | A kind of cable shaft lid state detection method and device |
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| CN107401187A true CN107401187A (en) | 2017-11-28 |
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