Optical transmission sensor device, sensing monitoring system and detection methodTechnical Field
The present invention relates to the field of optical communications technologies, and in particular, to an optical transmission sensor device, a sensing monitoring system, and a detection method.
Background
The mechanical mechanisms such as the magnetic reed switch and the push switch have the advantages of low cost, simple installation, easy implementation of a detection circuit and the like, are very widely applied, and are particularly widely applied to detection of the movement or positioning of an object and other application scenes.
However, for both reed switches and push switches, the metal wires need to be laid and electrically connected to the metal contacts to function properly. Therefore, for complex application scenes, the safety of electricity consumption cannot be completely guaranteed, and electrical connection through metal contacts and the like can involve various uncertain factors such as aging of circuits and mechanical equipment, so that judgment of the state of an object to be detected can be affected.
Disclosure of Invention
The embodiment of the invention provides an optical transmission sensor device, a sensing monitoring system and a detection method, which are used for solving the technical problems of low safety and unstable detection result caused by electric connection in the prior art.
An embodiment of the present invention provides an optical transmission sensor device including:
The two ends of the plug fixing sleeve are open, and the plug fixing sleeve is suitable for being fixedly connected with the mounting seat of the piece to be detected;
the limiting assembly is arranged in the plug fixing sleeve;
The magnetic attraction unit is detachably arranged at one end of the plug fixing sleeve and is abutted against the limiting component, the magnetic attraction unit is suitable for being magnetically connected with a piece to be detected, a light reflecting piece is fixedly arranged at one side of the magnetic attraction unit facing the limiting component,
The light transmission piece sequentially penetrates through the plug fixing sleeve and the limiting assembly and is arranged opposite to the light reflection piece so as to transmit light signal information related to the relative position of the piece to be detected and the mounting seat of the piece to be detected.
According to an embodiment of the optical transmission sensor device of the present invention,
The limiting assembly comprises a sleeve ring, a light transmission piece plug at least partially sleeved in the sleeve ring, and an elastic piece arranged on one side of the light transmission piece plug away from the sleeve ring;
the magnetic unit is abutted with the lantern ring, and the elastic piece is abutted with the plug of the light transmission piece.
According to the optical transmission sensor device of one embodiment of the present invention, the collar is provided with an optical transmission member channel therein, and the optical transmission member passes through the elastic member and the optical transmission member channel and extends to an end of the optical transmission member plug facing the optical reflection member.
According to the optical transmission sensor device of the embodiment of the invention, one side, close to the magnetic attraction unit, of the optical transmission piece plug is provided with at least one optical transmission piece limiting opening, and the optical transmission piece penetrates through the optical transmission piece limiting opening.
According to the optical transmission sensor device of the embodiment of the invention, the optical transmission piece plug is provided with the limiting step, and the circumferential dimension of one side of the optical transmission piece plug, which is close to the magnetic attraction unit, is smaller than the circumferential dimension of one side, which is far away from the magnetic attraction unit.
According to the optical transmission sensor device provided by the embodiment of the invention, one side of the plug fixing sleeve is provided with the extending plate, the extending plate is provided with at least one mounting hole, and the extending plate is fixedly connected with the mounting seat of the piece to be detected through the bolts.
The embodiment of the invention also provides a sensing and monitoring system which comprises a monitor and the optical transmission sensor device, wherein,
The monitor transmits signals through the optical transmission part and judges optical signal information related to the relative position of the part to be detected relative to the mounting seat of the part to be detected according to whether the correct optical reflection signals are received.
According to the sensing monitoring system of the embodiment of the invention, the monitor comprises a control unit, and a transmitting unit and a receiving unit which are respectively connected with the control unit, wherein the control unit controls the transmitting unit to transmit signals through the optical transmission part, and judges optical signal information related to the relative position of the part to be detected relative to the mounting seat of the part to be detected according to the signals received by the receiving unit.
According to a sensing and monitoring system of one embodiment of the present invention,
The transmitting unit comprises a digital signal sequence generator and a light emitting device, and the receiving unit comprises a digital signal sequence detector and a light sensing device;
The digital signal sequence generator is used for sending out a preset digital signal sequence, the light emitting device is used for converting the digital signal sequence into an optical signal, the light sensing device is used for converting the optical signal into the digital signal sequence, and the digital signal sequence detector is used for detecting the digital signal sequence reflected by the optical transmission piece.
The embodiment of the invention also provides a detection method of the sensing monitoring system, which comprises the following steps:
Transmitting a digital signal sequence;
receiving a digital signal sequence;
and comparing the transmitting digital signal sequence with the receiving digital signal sequence to judge the optical signal information related to the relative position of the to-be-detected piece relative to the to-be-detected piece mounting seat.
According to the optical transmission sensor device, the sensing monitoring system and the detection method provided by the embodiment of the invention, the magnetic attraction unit can be magnetically connected with the to-be-detected piece, so that the magnetic attraction piece and the plug fixing sleeve can be installed firstly, the optical transmission piece and the optical reflection piece are positioned at accurate corresponding positions, and when the to-be-detected piece and the to-be-detected piece mounting seat are installed, the magnetic attraction between the magnetic attraction unit and the to-be-detected piece can be realized, and the installation alignment efficiency of the optical reflection piece can be improved. When the to-be-detected piece is separated from the to-be-detected piece mounting seat, the to-be-detected piece can take away the magnetic attraction unit and the light reflection piece, so that the light signal sequence reflected by the light reflection piece is different from the light signal sequence transmitted to the light reflection piece, and the relative position of the to-be-detected piece and the to-be-detected piece mounting seat can be determined to be changed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a sensing and monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the cooperation of a monitor and an optical transmission sensor device in a sensing and monitoring system according to the present invention;
FIG. 3 is a schematic diagram of an exploded view of one embodiment of an optical transmission sensor device according to the present invention;
FIG. 4 is a schematic view of an exploded view of an embodiment of an optical transmission sensor device according to the present invention;
FIG. 5 is a schematic view of the optical transmitter plug of the optical transmitter device of FIG. 4;
FIG. 6 is a cross-sectional view of a state of the optical transmission sensor device shown in FIG. 3;
FIG. 7 is a flow chart of a detection method using the sensing device shown in FIG. 1;
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Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of a sensing and monitoring system according to the present invention, fig. 2 is a schematic structural diagram of a monitor and an optical transmission sensor device in the sensing and monitoring system according to the present invention, and the present invention provides a sensing and monitoring system including a monitor 50 and an optical transmission sensor device 60. The monitor 50 transmits a signal through the light transmission member 40, and determines positional information of the member to be inspected 70 with respect to the member to be inspected mount 80 according to whether a correct light reflection signal is received. The member 70 to be detected in an embodiment of the present invention may be a manhole cover made of cast iron for electric power, natural gas, etc. pipelines on urban road surfaces. In other embodiments, the member to be detected 70 may be any device that needs to detect whether it is moved or removed, which is not limited herein. The optical transmission member 40 may be an optical cable or the like, and is not limited herein.
The monitor 50 includes a control unit 530, and a transmitting unit 510 and a receiving unit 520 respectively connected to the control unit 530, where the control unit 530 controls the transmitting unit 510 to transmit signals through the optical transmission member 40, and determines position information of the to-be-detected member 70 and the to-be-detected member mounting seat 80 according to the signals received by the receiving unit 520. In an embodiment of the present invention, the signal is a digital signal sequence, the transmitting unit 510 includes a digital signal sequence generator 5110 and a light emitting device 5120, the receiving unit 520 includes a digital signal sequence detector 5210 and a light sensing device 5220, the digital signal sequence generator 5110 is used for emitting a preset digital signal sequence, the light emitting device 5120 is used for converting the digital signal sequence into an optical signal, the light sensing device 5220 is used for converting the optical signal into a digital signal sequence, and the digital signal sequence detector 5210 is used for detecting the digital signal sequence received by the light sensing device 5220. Further, the control unit 530 includes a control portion 5310 and a state determination portion 5320, the control portion 5310 is configured to control the digital signal sequence generator 5110 to issue a signal, and the state determination portion 5320 is configured to determine consistency between the received digital signal sequence and the transmitted digital signal sequence. With continued reference to fig. 2, the transmitted and received digital signals are compared by a digital signal sequence generator 5110 and a digital signal sequence detector 5210. For example, in the initial state, the initial distance between the monitor 50 and the member to be detected 70 is d, the time for which the optical signal emitted from the optical transmission member 40 is returned through the optical transmission sensor device 60 is 2Td, and the running speed of the light in the optical transmission member 40 is Cf. When the reflected digital signal sequence is consistent with the received digital signal sequence, there is no displacement between the part to be inspected 70 and the part to be inspected mount 80. If the reflected digital signal sequence is inconsistent with the received digital signal sequence, the to-be-detected piece 70 and the to-be-detected piece mounting seat 80 are displaced, that is, the to-be-detected piece 70 is separated from the original mounting position of the to-be-detected piece mounting seat 80.
Referring to fig. 3, 4, 5 and 6, fig. 3 is an exploded view of an embodiment of the optical transmission sensor device of the present invention, fig. 4 is an exploded view of another embodiment of the optical transmission sensor device of the present invention, fig. 5 is a schematic view of an optical transmission plug of the optical transmission sensor device of fig. 4, and fig. 6 is a cross-sectional view of an embodiment of the optical transmission sensor device of fig. 3. Further, the optical transmission sensor device 60 comprises a plug fixing sleeve 10, a limiting component 20, a magnetic attraction unit 30 and an optical transmission piece 40, wherein both ends of the plug fixing sleeve 10 are open, the plug fixing sleeve 10 is suitable for being fixedly connected with a piece to be detected mounting seat 80, the limiting component 20 is arranged in the plug fixing sleeve 10, the magnetic attraction unit 30 is detachably arranged at one end of the plug fixing sleeve 10 and is in butt joint with the limiting component 20, the magnetic attraction unit 30 is suitable for being magnetically connected with the piece to be detected 70, an optical reflection piece 310 is fixedly arranged on one side, facing the limiting component 20, of the magnetic attraction unit 30, and the optical transmission piece 40 sequentially penetrates through the plug fixing sleeve 10 and the limiting component 20 and is opposite to the optical reflection piece 310 so as to transmit optical signal information related to the relative position of the piece to be detected 70 and the piece to be detected mounting seat 80. The bottom of the member to be detected 70 is provided with a magnet material, which can magnetically attract the magnetic attraction unit 30. And then the plug fixing sleeve 10 can be firstly installed, and then the magnetic attraction unit 30 is sleeved in the plug fixing sleeve 10, and when the to-be-detected piece 70 is matched with the to-be-detected piece mounting seat 80, the magnetic attraction unit 30 can always keep the positions of the light reflection piece 310 and the light transmission piece 40 to be corresponding, so that the detection efficiency and accuracy can be improved. And there is no need to provide a fixed mounting area on the member to be inspected 70, whereby alignment correction time of the light reflecting member 310 and the light transmitting member 40 can be saved.
The limiting assembly 20 comprises a collar 210, an optical transmission piece plug 220 at least partially sleeved in the collar 210, and an elastic piece 230 arranged on one side of the optical transmission piece plug 220 away from the collar 210, wherein the magnetic unit 30 is abutted against the collar 210, and the elastic piece 230 is abutted against the optical transmission piece plug 220. That is, when the to-be-detected member 70 and the to-be-detected member mounting seat 80 are mounted in a matched manner, that is, the current to-be-detected member 70 and the to-be-detected member mounting seat 80 are disposed at intervals, a certain distance is provided, and then the magnetic attraction unit 30 slides along the plug fixing sleeve 10 for a certain distance, the magnetic attraction unit 30 and the optical transmission member 40 are disposed at intervals, and when the to-be-detected member 70 and the to-be-detected member mounting seat 80 are mounted, the magnetic attraction unit 30 moves towards the direction of the optical transmission member plug 220, and is abutted or close to the optical transmission member plug 220 to complete the mounting. The elastic member 230 can make the collar 210 and the light transmission member plug 220 in an elastic abutting state, so as to improve the installation stability of the light transmission member plug 220, and can elastically buffer the installation of the magnetic unit 30, so as to prevent the magnetic unit 30 from compressing the detection end of the light transmission member 40. In one embodiment of the present invention, the magnetic attraction unit 30 may be a magnet.
The collar 210 has a light transmitting member channel 2110 formed therein, and the light transmitting member 40 passes through the elastic member 230 and the light transmitting member channel 2110 and extends to an end of the light transmitting member plug 220 facing the light reflecting member 310. Further, at least one light transmission member limiting opening 2210 is formed on the side of the light transmission member plug 220, which is close to the magnetic attraction unit 30, and the light transmission member 40 penetrates into the light transmission member limiting opening 2210. The light transmission member limit opening 2210 may limit the position of the light transmission member 40. In an embodiment of the present invention, the number of the light transmission members 40 is two, and further two light transmission member limiting openings 2210 are formed on the collar 210. In other embodiments, the number of the optical transmission elements 40 may be one, for example, a wire core is used to transmit and receive signals simultaneously, and a corresponding collar 210 may be provided with an optical transmission element limiting opening 2210.
In an embodiment of the present invention, the light transmission member plug 220 is provided with a limiting step, and the circumferential dimension of the light transmission member plug 220 on the side close to the magnetic attraction unit 30 is smaller than the circumferential dimension of the light transmission member plug on the side far from the magnetic attraction unit 30. That is, there is a limiting surface between the optical transmission plugs 220 with the limiting steps, and the limiting surface may abut against an end surface of the collar 210 away from the magnetic unit 30. For example, when the magnetic unit 30 abuts against the collar 210, the bottom surface of the collar 210 abuts against the above-mentioned limiting surface, so as to compress the elastic member 230, and therefore, under the action of the elastic member 230, the collar 210, the light transmission member plug 220 and the magnetic unit 30 are in an elastic abutting state, so that the force of the collar 210 popping out the light transmission member plug 220 is buffered once the to-be-detected member 70 is separated from the to-be-detected member mounting seat 80. In an embodiment of the invention, when the magnetic unit 30 is separated from the plug fixing sleeve 10, the elastic member 230 returns from the compressed state, and when the friction force between the collar 210 and the plug fixing sleeve 10 is greater than the deformation force of the elastic member 230, the collar 210 plays a role in limiting the light transmission member plug 220, so as to prevent the collar 210 and the light transmission member plug 220 from separating from the plug fixing sleeve 10.
An extension plate 110 is arranged on one side of the plug fixing sleeve 10, at least one mounting hole 1110 is formed in the extension plate 110, and the extension plate 110 is fixedly connected with the mounting seat 80 of the part to be detected through bolts. In an embodiment of the present invention, the extension plate 110 and the member to be detected 70 are fixedly connected by bolts, and in other embodiments, welding or bonding may be used, for example, the extension plate 110 and the member to be detected mount 80 may be welded or bonded to be fixed, which is not limited herein.
Referring to fig. 7, fig. 7 is a flowchart of a detection method using the sensing device shown in fig. 1. In an embodiment of the present invention, a detection method based on the above-mentioned sensing and monitoring system is further provided, including:
s110, transmitting a digital signal sequence;
That is, the digital signal sequence is transmitted by the digital signal sequence generator, and the light emitting device converts the digital signal sequence into an optical signal and transmits the optical signal through the optical transmission member.
S120, receiving a digital signal sequence;
the optical signal reflected by the optical reflecting piece is converted into a digital signal through the photosensitive device and the digital signal sequence detector to be compared with the transmitted digital signal.
S130, comparing the transmitted digital signal sequence with the received digital signal sequence to judge the optical signal information related to the relative positions of the to-be-detected piece and the to-be-detected piece mounting seat.
If the detected received digital signal sequence is the same as the transmitted digital signal sequence, no displacement occurs between the to-be-detected piece and the to-be-detected piece mounting seat. If the detected received digital signal sequence is different from the transmitted digital signal sequence, the piece to be detected is separated from the mounting frame of the piece to be detected.
In summary, the position information of the to-be-detected piece can be determined through the cooperation between the light transmission piece and the light reflection piece, so that an electric connection piece is not required to be arranged on the periphery of the to-be-detected piece, and the safety of the to-be-detected piece in the detection process is improved. And the magnetic unit is matched with the to-be-detected piece to ensure that the to-be-detected piece and the to-be-detected piece mounting seat are always in an alignment state with the light transmission piece in the mounting process, so that the detection accuracy is improved.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.