CN206863823U - Bus occupant number monitoring system - Google Patents
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- CN206863823U CN206863823U CN201720603590.6U CN201720603590U CN206863823U CN 206863823 U CN206863823 U CN 206863823U CN 201720603590 U CN201720603590 U CN 201720603590U CN 206863823 U CN206863823 U CN 206863823U
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Abstract
The utility model discloses a kind of bus occupant number monitoring system, including：At least one terminal detection unit and vehicle-mounted control module；Wherein, terminal detection unit includes at least one pressure responsive element and signal pre-processing module, and at least one pressure responsive element is arranged on the seat of car, for sensing pressure that seat is subject to and exporting electric signal；Signal pre-processing module is connected with least one pressure responsive element, and the electric signal for being exported at least one pressure responsive element is handled；Vehicle-mounted control module is used to detect the electric signal after processing with prefixed time interval, and exports testing result.The utility model is simple in construction, and respective handling and detection are carried out by the electric signal exported to pressure responsive element induction pressure, can accurately identify the number of bus occupant, reliability is high and the cost of cost is relatively low.
Description
Technical Field
The utility model relates to a passenger train operation management technical field, concretely relates to passenger train passenger number monitoring system.
Background
In the operation process of the passenger car, drivers and crew members need to report the number of passengers of the passenger car to a passenger car operation company. However, since the number of passengers is reported after being manually counted by the driver and the crew member, there may be a case where the number of passengers reported to the passenger car operation company is lower than the actual number of passengers, and the driver and the crew member earn a difference therefrom, thereby reducing the income of the passenger car operation company. Therefore, the passenger number of the passenger car is monitored in real time, the passenger car operation company can master the actual passenger number of the passenger car in the operation process in real time, and the loss caused by the fact that the actual passenger number is concealed by a driver and a crew member is prevented. In addition, the number of actual passengers and the utilization condition of seats of the vehicle in the driving process are monitored in real time, the passenger carrying efficiency of the passenger car is improved, and whether new passengers need to be carried in the midway or not is reasonably planned.
In the prior art, the monitoring of the number of passengers in a passenger car is mostly based on technologies such as infrared monitoring, face recognition and video monitoring. However, infrared monitoring is easily interfered and cannot be accurately monitored; the technologies of face recognition, video monitoring and the like are complex and the use cost is high.
Therefore, a passenger number monitoring system for a passenger car, which has the advantages of high comfort, high reliability and low cost, is needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an invention purpose is to prior art's defect, provides a passenger train passenger number monitoring system for the travelling comfort is poor, the reliability is not high, the cost is higher scheduling problem when solving passenger train passenger number monitoring among the prior art.
According to the utility model discloses an aspect provides a passenger train passenger number monitoring system, include: the system comprises at least one terminal detection unit and a vehicle-mounted control module; wherein,
the terminal detection unit comprises at least one pressure sensing element and a signal preprocessing module, wherein the at least one pressure sensing element is arranged on a seat of the passenger car and used for sensing the pressure applied to the seat and outputting an electric signal; the signal preprocessing module is connected with the at least one pressure sensing element and used for processing the electric signal output by the at least one pressure sensing element;
the vehicle-mounted control module is used for detecting the processed electric signals at preset time intervals and outputting detection results.
Optionally, the passenger number monitoring system further comprises a first wireless transmission module;
the first wireless transmitting module is connected with the vehicle-mounted control module and used for sending the detection result to the external equipment.
Optionally, the terminal detection unit further includes a terminal control module and a second wireless transmission module;
the terminal control module is connected with the signal preprocessing module and the second wireless transmitting module and used for receiving the electric signals processed by the signal preprocessing module and outputting the processed electric signals through the second wireless transmitting module.
Optionally, the vehicle-mounted control module further comprises: and the second wireless receiving circuit is used for receiving the electric signal output by the second wireless transmitting module.
Optionally, the second wireless transmitting module and the second wireless receiving circuit communicate with each other by using infrared, bluetooth, ZigBee or wireless local area network technology.
Optionally, the pressure sensing element is a belt structure, disposed on the surface of the seat or embedded inside the seat.
Optionally, the at least one pressure sensing element is arranged in a seat to form an array of M rows and N columns, each pressure sensing element having a first output and a second output, the first outputs of the N pressure sensing elements in each row being connected to form M first terminals, and the second outputs of the M pressure sensing elements in each column being connected to form N second terminals.
Optionally, the signal preprocessing module is connected to the M first terminals and the N second terminals of the pressure sensing element.
Optionally, the signal preprocessing module includes: the circuit comprises an amplifying circuit, a filter circuit, an analog-to-digital conversion circuit and a voltage limiting circuit;
the amplifying circuit is connected with the at least one pressure sensing element and is used for amplifying the electric signal output by the at least one pressure sensing element;
the filter circuit is connected with the amplifying circuit and is used for filtering clutter in the amplified electric signal output by the amplifying circuit;
the analog-to-digital conversion circuit is connected with the filter circuit and is used for converting the filtered analog signals into digital signals;
the voltage limiting circuit is connected with the analog-to-digital conversion circuit, stores a voltage limiting threshold in advance and is used for filtering digital signals which are not in the voltage limiting threshold range.
Optionally, the pressure sensing element includes a first electrode layer, a first high molecular polymer insulating layer, and a second electrode layer, which are stacked; the opposite surfaces of the first electrode layer and the first high-molecular polymer insulating layer form a friction interface;
or the pressure sensing element comprises a first electrode layer, a first high polymer insulating layer, a second high polymer insulating layer and a second electrode layer which are stacked; the opposite surfaces of the first high molecular polymer insulating layer and the second high molecular polymer insulating layer form a friction interface;
or the pressure sensing element comprises a first electrode layer, a first high polymer insulating layer, an intermediate electrode layer, a second high polymer insulating layer and a second electrode layer which are stacked; the surface of the first high molecular polymer insulating layer opposite to the intermediate electrode layer and/or the surface of the intermediate electrode layer opposite to the second high molecular polymer insulating layer form a friction interface;
or the pressure sensing element comprises a first electrode layer, a first high polymer insulating layer, an intermediate thin film layer, a second high polymer insulating layer and a second electrode layer which are arranged in a laminated manner; the opposing surfaces of the first high molecular polymer insulating layer and the intermediate thin film layer and/or the opposing surfaces of the intermediate thin film layer and the second high molecular polymer insulating layer form a frictional interface.
Optionally, the first high molecular polymer insulating layer and/or the second high molecular polymer insulating layer and/or the intermediate thin film layer is a composite film doped with a dielectric material.
Optionally, the composite film doped with the dielectric material comprises a first thin film layer and a second thin film layer; the second thin film layer is arranged on the first thin film layer;
the first film layer is formed by vacuum degassing and curing a polymer substrate solution without doping dielectric materials;
the second thin film layer is formed by vacuum degassing and curing a composite film slurry doped with a dielectric material, wherein the composite film slurry is prepared by mixing a polymer base solution and the doped dielectric material.
Optionally, the dielectric material doped composite film is formed by vacuum degassing and curing the dielectric material doped composite film slurry; wherein the composite film slurry is prepared by mixing a polymer substrate solution and a doped dielectric material.
Optionally, the dielectric material has a dielectric constant higher than the dielectric constant of the polymeric base material.
Optionally, the dielectric material is any one or more of ZnO, TiO2, SnO, SiO2, and WO 3.
Optionally, at least one of the two surfaces constituting the frictional interface is provided with a protrusion array structure.
Optionally, the first film layer constituting at least one of the two surfaces of the frictional interface is provided with a protrusion array structure.
Optionally, an elastic support is disposed between the two surfaces of the friction interface, and the elastic support is an annular washer, a grid-shaped gasket, or a plurality of columnar support points.
Optionally, the pressure sensing element is made by packaging piezoelectric material.
Optionally, the piezoelectric material comprises ZnO, PZT, or PVDF.
Optionally, the passenger number monitoring system further comprises a storage module for storing the detection result.
Optionally, the passenger number monitoring system further comprises a display module for displaying the detection result.
Optionally, the passenger number monitoring system further comprises a power module.
According to the utility model provides a passenger number monitoring system of passenger train, the pressure output signal of telecommunication that the pressure sensing element response passenger that sets up on the seat received when sitting on the seat, signal preprocessing module handles this signal of telecommunication. The vehicle-mounted control module detects the processed electric signals at preset time intervals and outputs detection results. The detection result is the current passenger number of the passenger car. The vehicle-mounted control module detects through the preset time interval, can update the passenger number of the passenger car in different time periods in real time, is favorable for improving passenger carrying efficiency of the passenger car, and reasonably plans whether to take over new passengers midway. The utility model provides a passenger train passenger number monitoring system overall structure is simple, and the cost that the reliability is high and the cost is lower. Further, the utility model discloses the forced induction component that can adopt flexible material sets up on the seat, does not influence the comfort level that the passenger took, and the passenger experiences the preferred.
Drawings
Fig. 1 is a schematic diagram of a functional module of a first embodiment of a passenger number monitoring system for a passenger car provided by the present invention;
FIG. 2 is a schematic cross-sectional view of a pressure sensing element;
FIG. 3 is a schematic structural diagram of a composite film doped with a dielectric material;
FIG. 4 is a functional block diagram of a signal preprocessing module;
FIG. 5 is a schematic diagram of a functional module of a second embodiment of a passenger number monitoring system of a passenger car provided by the present invention;
fig. 6 is a functional module schematic diagram of a third embodiment of a passenger number monitoring system for a passenger car.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and functions of the present invention, but the present invention is not limited thereto.
Fig. 1 is the utility model provides a passenger train passenger number monitoring system embodiment one's functional module schematic diagram, as shown in fig. 1, passenger train passenger number monitoring system has included at least one terminal detecting element 100, on-vehicle control module 200.
The terminal detecting unit 100 includes at least one pressure sensing element 110 and a signal preprocessing module 120. The pressure sensing element 110 may be disposed on a seat of a passenger car, and is configured to sense a pressure applied to a passenger seated on the seat and output an electrical signal. The pressure-sensitive element 110 may be provided in a belt-like structure, conveniently disposed on the surface of the seat or embedded inside the seat, in consideration of the comfort of the passenger when seated.
The structure of the pressure sensing element 110 may be a three-layer, four-layer or five-layer structure. Wherein, for the comfort level that improves the passenger and take, each layer structure can adopt the flexible film material. The concrete structure is as follows:
the pressure sensing element with the three-layer structure comprises a first electrode layer, a first high polymer insulating layer and a second electrode layer which are arranged in a stacked mode. Wherein, the opposite surfaces of the first electrode layer and the first high molecular polymer insulating layer form a friction interface.
The pressure sensing element with the four-layer structure comprises a first electrode layer, a first high polymer insulating layer, a second high polymer insulating layer and a second electrode layer which are stacked. Wherein, the opposite surfaces of the first high molecular polymer insulating layer and the second high molecular polymer insulating layer form a friction interface.
The pressure sensing element with the five-layer structure comprises a first electrode layer, a first high polymer insulating layer, an intermediate electrode layer, a second high polymer insulating layer and a second electrode layer which are stacked. Wherein the surface of the first polymer insulating layer opposite to the intermediate electrode layer and/or the surface of the intermediate electrode layer opposite to the second polymer insulating layer constitute a friction interface.
Or, the pressure sensing element with the five-layer structure comprises a first electrode layer, a first high molecular polymer insulating layer, an intermediate thin film layer, a second high molecular polymer insulating layer and a second electrode layer which are arranged in a stacking mode. Wherein the surfaces of the first high molecular polymer insulating layer opposite to the intermediate thin film layer and/or the surfaces of the intermediate thin film layer opposite to the second high molecular polymer insulating layer form a friction interface.
The pressure sensing element with the structure also comprises an encapsulation layer on the outermost layer. Fig. 2 is a schematic cross-sectional view of a pressure-sensitive element having a four-layer structure as an example. The outermost layer of the pressure sensing element is an encapsulation layer 115, which completely encapsulates the four-layer structure included therein. The four-layer structure includes, in order from top to bottom, a first electrode layer 111, a first polymer insulating layer 112, a second polymer insulating layer 113, and a second electrode layer 114, which are stacked. The opposing surfaces of the first polymer insulating layer 112 and the second polymer insulating layer 113 form a friction interface. In order to make the generated electric signal clearer, at least one of the two surfaces of the friction interface can be provided with a protrusion array structure. As shown in fig. 2, a triangular protrusion array structure is disposed on the surface of the second polymer insulating layer 113. Besides the triangular shape, the protrusion array structure may be formed by arranging a plurality of protruding points in a rectangular or rhombic shape, or may be formed by arranging a plurality of strip-shaped structures in a geometric shape, and the like, and is not limited herein, which is determined according to specific implementation. Further, in fig. 2, a resilient support 116 is provided between the two surfaces of the frictional interface. The elastic support 116 can separate the friction interface when the pressure-sensitive element is not under the action of external force, so as to reduce the output of the interference electrical signal. And after the pressure sensing element is subjected to external force to enable the friction interfaces to be in contact friction with each other, the separation speed of the friction interfaces is increased, and the output of electric signals is improved. The elastic supporting member 116 may be a ring-shaped gasket, a grid-shaped gasket, or a plurality of columnar supporting points, which are made of polymer or the like.
The first high-molecular polymer insulating layer and/or the second high-molecular polymer insulating layer and/or the intermediate thin film layer in the pressure sensing element with multiple structures can be a composite film doped with dielectric materials, so that the dielectric property of a friction layer is improved, the output and the sensitivity of an electric signal of the pressure sensing element are improved, an effective signal in the output signal can be distinguished conveniently during subsequent signal processing, and the accuracy of the system for monitoring the use condition of the seat is improved. The composite membrane is divided into two layers, and the dielectric material is only doped on one side of the composite membrane, so that the water absorption of the doped material is reduced, and the influence on the friction power generation effect of the polymer composite membrane is reduced. Structure of composite film as shown in fig. 3, a composite film doped with a dielectric material includes a first thin film layer 1001 and a second thin film layer 1002. Second thin film layer 1002 is disposed over first thin film layer 1001. The first thin film layer 1001 is formed by vacuum degassing and curing a polymer substrate solution without doping a dielectric material, and the second thin film layer 1002 is formed by vacuum degassing and curing a composite film slurry with doping a dielectric material. The composite film slurry is made by mixing a polymer base solution and a doped dielectric material. Or the composite film is of a single-layer structure and is formed by vacuum degassing and curing of composite film slurry doped with a dielectric material. The doping proportion of the dielectric material is 0.1-30 wt%,i.e., 0.1-30 grams of dielectric material per 100 grams of composite film. Preferably, the doping ratio of the dielectric material is 0.5-5 wt%, and more preferably, the doping ratio of the dielectric material is 2-3 wt%. The dielectric constant of the dielectric material is higher than that of the polymer substrate material so as to enhance the overall dielectric property of the composite film and improve the friction power generation performance of the composite film. The dielectric material can be ZnO or TiO2、SnO、SiO2And WO3Any one or more of them. Preferably TiO2Anatase dielectric materials. The dielectric material doped into the polymer base material is granular, the grain diameter of the dielectric material is 5nm-100 mu m, and the granular dielectric material is beneficial to uniformly doping the dielectric material into the polymer base material. The utility model discloses do not have special requirement to polymer substrate material, polymer material such as polydimethylsiloxane, polyvinylidene fluoride, polymethyl methacrylate or polyvinyl chloride all can be used to the utility model discloses.
In the case of the two-layer structure composite film, the first thin film layer 1001 serves as a surface of the frictional interface, which is not doped with a dielectric material, and a protrusion array structure is disposed on the surface. The height of the protrusions ranges from 200nm to 100 μm. The first thin film layer 1001 and the second thin film layer 1002 of the composite film may have any thickness, and preferably, the thicknesses of the first thin film layer 1001 and the second thin film layer 1002 are 100-120 μm, so that the doped material can be completely embedded in the polymer base solution, and the deformation of the pressure sensing element due to the excessive thickness of the composite film is avoided.
The preparation method of the composite film doped with the dielectric material comprises the following steps:
in a first step, a polymer base solution is prepared. The polymer substrate material used for the polymer substrate solution needs to be prepared according to the properties of the polymer, for example, polydimethylsiloxane is liquid and can be directly used as the polymer substrate solution; polyvinylidene fluoride, polymethyl methacrylate or polyvinyl chloride are in crystalline or semi-crystalline form and need to be dissolved in dimethylacetamide to form a polymer base solution.
And secondly, adding a dielectric material into the polymer substrate solution, and uniformly mixing to obtain a mixed solution. The mixing can be carried out by ball milling, magnetic stirring, stirring rod stirring and the like. The amount of the dielectric material added is such that the doping ratio of the dielectric material in the finally obtained polymer composite film is 0.1 to 30 wt%, preferably 0.5 to 5 wt%, and most preferably 2 to 3 wt%.
And thirdly, adding a curing agent into the mixed solution doped with the dielectric material, stirring and mixing uniformly, and degassing to obtain the composite film slurry. As the curing agent, a conventional commercially available curing agent such as a vulcanizing agent and the like can be used. The amount of the curing agent to be added can be determined by those skilled in the art according to actual production conditions.
And fourthly, preparing mixed slurry of the polymer base solution and the curing agent, stirring uniformly, degassing, then coating the slurry on a template, and curing or semi-curing to form a polymer film without doped dielectric materials, namely a first film layer.
And fifthly, coating the composite film slurry on the first thin film layer by adopting methods such as screen printing, coating, spin coating and the like, and then drying and curing to obtain a cured composite film, namely the second thin film layer, so as to obtain the composite film comprising the first thin film layer and the second thin film layer.
For the composite film with a single-layer structure, the fourth step can not be executed, and the composite film slurry is directly coated on the template by adopting the methods of screen printing, coating, spin coating and the like, dried and cured to obtain the composite film.
Besides the structure, the pressure sensing element can be packaged and manufactured by adopting piezoelectric materials. The piezoelectric material includes ZnO, PZT, PVDF, or the like. And arranging an encapsulation layer outside the piezoelectric material to completely encapsulate the piezoelectric material to form the pressure sensing element.
Since the seats on the passenger car are arranged in a plurality of rows and columns, a plurality of pressure sensing elements arranged on the seats can form an array of M rows and N columns according to the arrangement of the seats. Each pressure sensing element has a first output and a second output. The first output ends of the N pressure sensing elements in each row are connected to form M first terminals, and the second output ends of the M pressure sensing elements in each column are connected to form N second terminals. The signal preprocessing module 120 is connected to each of the plurality of pressure sensing elements 110, and is configured to process the electrical signals output by the plurality of pressure sensing elements 110. Specifically, the signal preprocessing module 120 is connected to M first terminals and N second terminals of the plurality of pressure sensing elements 110. When the pressure sensing elements are connected, one signal preprocessing module can be adopted to be connected with the first terminals and the second terminals of all the pressure sensing elements arranged on the passenger car. That is, the terminal detecting unit 100 includes a plurality of pressure sensing elements 110, and a signal preprocessing module 120 connected to all the pressure sensing elements 110.
The signal preprocessing module 120 includes an amplifying circuit 121, a filtering circuit 122, an analog-to-digital converting circuit 123 and a voltage limiting circuit 124 as shown in fig. 4.
The amplifying circuit 121 is connected to each of the plurality of pressure sensing elements 110, and is configured to amplify the electrical signal output by the pressure sensing element 110. The filter circuit 122 is connected to the amplifier circuit 121, and is configured to filter noise in the amplified electrical signal output by the amplifier circuit 121. The analog-to-digital conversion circuit 123 is connected to the filter circuit 122, and is configured to convert the filtered analog signal into a digital signal. The voltage limiting circuit 124 is connected to the analog-to-digital conversion circuit 123, wherein the voltage limiting circuit 124 stores a voltage limiting threshold in advance for filtering out digital signals that are not within the voltage limiting threshold. The voltage limit threshold is a voltage range in which the electric signal output by the pressure sensing element is counted when the passenger sits on the seat. The voltage limiting circuit 124 limits the threshold value according to the pre-stored voltage, and can filter the electric signals output by the pressure of the pressure sensing element under the action of other pressure of a passenger sitting outside the seat, such as vehicle vibration, luggage collision and the like, so that the electric signals generated by other pressure can be effectively filtered, the reliable electric signals generated by the passenger sitting on the seat can be obtained, and the effectiveness of the electric signals can be improved.
The vehicle-mounted control module 200 is connected to the signal preprocessing module 120, and is configured to detect the processed electrical signal at preset time intervals and output a detection result. The detection result, that is, the vehicle-mounted control module 200 detects the electrical signals, and then identifies the seats corresponding to the electrical signals, so as to identify the number of passengers. The detection has periodicity, and the vehicle-mounted control module 200 periodically detects and identifies the processed electric signals at preset time intervals, so that the number of passengers at the latest time can be obtained in real time. After a certain preset time interval, the on-board control module 200 detects and recognizes the processed electrical signal again, and finds that no electrical signal is detected, that is, no passenger is on the seat, and the passenger has left the seat or has got off the vehicle, thereby obtaining the new number of passengers. Here, the terminal detecting unit 100 may be provided with only one signal preprocessing module 120 and a plurality of pressure-sensitive elements 110. After one signal preprocessing module 120 is connected to all the pressure sensing elements 110, the signal preprocessing module 120 is connected to the on-board control module 200 in a wired manner, so that the on-board control module 200 can detect the processed electrical signals at preset time intervals and output the detection results. Alternatively, the in-vehicle control module 200 may continuously detect the electrical signal.
Further, in order to facilitate the remote monitoring of the number of passengers, the passenger number monitoring system of the passenger car may further include a first wireless transmission module 300 as shown in fig. 5.
The first wireless transmission module 300 is connected to the vehicle-mounted control module 200, and is configured to send a detection result to an external device. If the remote monitoring center for the passenger car occurs, the number of passengers carrying the passenger car can be monitored in real time by the staff of the remote monitoring center conveniently.
The passenger number monitoring system of the passenger car has the specific working modes that: in the passenger train in-process of traveling, after the passenger takes one's seat, set up pressure sensing element on the seat and sense the pressure that the passenger applyed, under the effect of passenger train motion of traveling, pressure sensing element can be continuous produces the signal of telecommunication output. The signal preprocessing module correspondingly processes the generated electric signals. The vehicle-mounted control module detects the processed electric signal at a preset time interval (such as 2min or 5min), and if the processed electric signal is received in the detection process, the processed electric signal is identified, so that the passenger is seated on the seat corresponding to the electric signal. If the vehicle-mounted control module does not receive the electric signal in the detection process, no passenger sits on the seat corresponding to the electric signal or the passenger gets off the vehicle. The vehicle-mounted control module detects and identifies the processed electric signals at preset time intervals, and can update passenger carrying conditions of the passenger cars in different time periods in real time. The first wireless transmitting module sends the detection result of the vehicle-mounted control module to the external equipment, so that the passenger carrying condition of the passenger car can be conveniently and remotely monitored in real time.
Except that the pressure sensing elements are disposed on the seat surface or inside the seat cushion, other modules may be disposed in appropriate locations within the vehicle that do not interfere with the normal operation of the passenger vehicle. The specific position is not limited.
According to the utility model provides a passenger number monitoring system of passenger train, the pressure output signal of telecommunication that the pressure sensing element response passenger that sets up on the seat received when sitting on the seat, signal preprocessing module handles this signal of telecommunication. The vehicle-mounted control module periodically detects the processed electric signals at preset time intervals and outputs detection results. The detection result is the current passenger number of the passenger car. The vehicle-mounted control module periodically detects through a preset time interval, the number of passengers in the passenger car in different time periods can be updated in real time, passenger carrying efficiency of the passenger car is improved, and whether new passengers need to be carried in midway or not is reasonably planned. Meanwhile, the detection result can be sent to external equipment through the first wireless transmitting module, so that the number of passengers in the passenger car can be remotely monitored. The utility model provides a passenger train passenger number monitoring system overall structure is simple, and the cost that the reliability is high and the cost is lower. Further, the utility model discloses the forced induction component that can adopt flexible material sets up on the seat, does not influence the comfort level that the passenger took, and the passenger experiences the preferred. Meanwhile, the pressure sensing element is manufactured into a belt shape, so that the manufacturing and using cost can be reduced. The pressure sensing elements on a plurality of seats are arranged in an array mode, so that the wiring can be reduced to a certain extent, and the workload of later maintenance and fault repair is reduced.
Fig. 6 is a functional module schematic diagram of a third embodiment of a passenger number monitoring system for a passenger car. Compared with fig. 5, the terminal detecting unit 100 in the passenger number monitoring system further includes a terminal control module 130 and a second wireless transmitting module 140.
The terminal control module 130 is connected to the signal preprocessing module 120 and the second wireless transmitting module 140, and is configured to receive the electrical signal processed by the signal preprocessing module 120, and output the processed electrical signal through the second wireless transmitting module 140. The on-board control module 200 further includes a second wireless receiving circuit 210 for receiving the electrical signal output by the second wireless transmitting module 140. The second wireless transmitting module 140 and the second wireless receiving circuit 210 can communicate with each other by using infrared, bluetooth, ZigBee or wireless local area network technologies, so that the transmission and reception of the electric signals between the terminal detection unit 100 and the vehicle-mounted control module 200 are realized wirelessly, and a large amount of wiring is not required to be performed on the electric signals, thereby greatly reducing the workload of system maintenance and reducing the difficulty of troubleshooting. Among them, the pressure sensing element 110, the signal preprocessing module 120, the terminal control module 130 and the second wireless transmission module 140 in the terminal detecting unit 100 may be integrated together and disposed on the surface of the seat or inside the cushion of the seat. It can be understood that, in the present embodiment, the number of the signal preprocessing modules 120, the terminal control module 130 and the second wireless transmission module 140 is the same as the number of the pressure sensing elements 110, that is, one terminal detection unit includes one pressure sensing element, one signal preprocessing module connected to one pressure sensing element, one terminal control module connected to one signal preprocessing module, and one second wireless transmission module connected to one terminal control module, and the four are integrated into the terminal detection unit 100. According to the number of seats in the passenger number monitoring system of the passenger car, a plurality of terminal detection units 100 can be arranged, and the terminal detection units 100 are respectively arranged on the seats.
The passenger number monitoring system in the embodiment has the specific working mode that: in the passenger train in-process of traveling, after the passenger takes one's seat, set up pressure sensing element on the seat and sense the pressure that the passenger applyed, under the effect of passenger train motion of traveling, pressure sensing element can be continuous produces the signal of telecommunication output. The signal preprocessing module correspondingly processes the generated electric signals. And the terminal control module receives the processed electric signal and outputs the electric signal through the second wireless transmitting module. And a second wireless receiving circuit in the vehicle-mounted control module receives the electric signal. The vehicle-mounted control module detects the received electric signal at a preset time interval, and if the electric signal is detected, the electric signal is identified, so that the condition that a passenger sits on the seat corresponding to the electric signal can be identified. If no electric signal is detected in a certain detection process, no passenger sits on the seat corresponding to the electric signal or the passenger gets off the vehicle. The vehicle-mounted control module detects the received electric signals at preset time intervals, and can update passenger carrying conditions of passenger cars in different time periods in real time. The first wireless transmitting module sends the detection result of the vehicle-mounted control module to the external equipment, so that the passenger carrying condition of the passenger car can be conveniently and remotely monitored in real time.
Other modules can refer to the descriptions in the first and second embodiments, and are not described herein again.
According to the utility model provides a passenger train passenger number monitoring system realizes transmission and the receipt of the signal of telecommunication between terminal detecting element and on-vehicle control module through wireless mode for need not carry out a large amount of wiring to the transmission and the receipt of its signal of telecommunication again, great reduction the work load that the system was maintained, reduced the degree of difficulty that the trouble took place and was investigated.
For the passenger number monitoring system in the first to third embodiments, it may further include a storage module for storing the detection result. The storage module is connected with the vehicle-mounted control module, receives the detection result and stores the detection result, namely the passenger number information of the passenger car is stored, so that the actual passenger number information of the passenger car can be conveniently consulted subsequently, or a related passenger plan and the like can be formulated according to the stored passenger number information.
The passenger number monitoring system further comprises a display module for displaying the detection result. The display module is connected with the vehicle-mounted control module, receives the detection result and displays the detection result. The detection result can be converted into the service condition of each corresponding seat on the specific passenger car during display, so that a driver or a crew member can know the service condition of each seat clearly without checking the service condition of the seat one by one manually.
Further, for each power consumption module or circuit device and the like in the passenger number monitoring system, the passenger number monitoring system also provides a power module for supplying power to the passenger number monitoring system. The power module can use the power supply of the passenger car or energy storage elements such as lithium batteries and the like.
According to the utility model provides a passenger train passenger number monitoring system, its overall structure is simple, and the cost that the reliability is high and the cost is lower. The composite membrane doped with the dielectric material is used as a friction layer of the pressure sensing element, so that the signal output and the sensitivity of the pressure sensing element are greatly improved, effective signals generated by passengers in the output signals and interference signals generated by other external factors such as vehicle vibration and the like can be conveniently distinguished during subsequent signal processing, and the accuracy and the reliability of the system for monitoring the use condition of the seat are improved. Compared with the existing pressure sensing element based on friction power generation, the pressure sensing element of the system which adopts the composite film doped with the dielectric material as the friction layer has the output voltage signal improved by 5-20%. Simultaneously, the pressure sensing component of the flexible material that it adopted sets up on the seat, does not influence the comfort level that the passenger took, and the passenger experiences the preferred. The pressure sensing element is manufactured into a belt shape, so that the manufacturing and using cost is further reduced. The passenger number information of the passenger car is stored through the storage module, so that the passenger number information of the passenger car can be conveniently and subsequently looked up, and a corresponding passenger plan can be conveniently formulated according to the passenger number information of the passenger car. The display module enables a driver and crew members to quickly know the use condition of the seat, and reduces the manual checking cost and the error probability of manual checking.
The utility model discloses in various modules, circuit mentioned are the circuit by the hardware realization, though wherein some module, circuit have integrateed the software, nevertheless the utility model discloses what protect is the hardware circuit of the function that integrated software corresponds, and not only software itself.
It will be appreciated by those skilled in the art that the arrangement of devices shown in the figures or embodiments is merely schematic and representative of a logical arrangement. Where modules shown as separate components may or may not be physically separate, components shown as modules may or may not be physical modules.
Finally, it is noted that: the above list is only the concrete implementation example of the present invention, and of course those skilled in the art can make modifications and variations to the present invention, and if these modifications and variations fall within the scope of the claims of the present invention and their equivalent technology, they should be considered as the protection scope of the present invention.
Claims (23)
1. A passenger number monitoring system for a passenger vehicle, comprising: the system comprises at least one terminal detection unit and a vehicle-mounted control module; wherein,
the terminal detection unit comprises at least one pressure sensing element and a signal preprocessing module, wherein the at least one pressure sensing element is arranged on a seat of a passenger car and used for sensing the pressure applied to the seat and outputting an electric signal; the signal preprocessing module is connected with the at least one pressure sensing element and used for processing the electric signal output by the at least one pressure sensing element;
and the vehicle-mounted control module is used for detecting the processed electric signals at preset time intervals and outputting detection results.
2. The passenger number monitoring system of claim 1, further comprising a first wireless transmission module;
and the first wireless transmitting module is connected with the vehicle-mounted control module and used for transmitting the detection result to external equipment.
3. The passenger number monitoring system of claim 1, wherein the terminal detection unit further comprises a terminal control module and a second wireless transmission module;
the terminal control module is connected with the signal preprocessing module and the second wireless transmitting module and used for receiving the electric signals processed by the signal preprocessing module and outputting the processed electric signals through the second wireless transmitting module.
4. The passenger vehicle passenger number monitoring system of claim 3, wherein the onboard control module further comprises: and the second wireless receiving circuit is used for receiving the electric signal output by the second wireless transmitting module.
5. The passenger number monitoring system of claim 4, wherein the second wireless transmitting module and the second wireless receiving circuit are in communication by infrared, Bluetooth, ZigBee or wireless local area network technology.
6. A passenger number monitoring system according to any one of claims 1-4, wherein the pressure sensing element is a strip structure, and is disposed on the surface of the seat or embedded in the seat.
7. A passenger number monitoring system according to claim 1, wherein the at least one pressure sensitive element is arranged in a seat array having M rows and N columns, each pressure sensitive element having a first output and a second output, the first outputs of the N pressure sensitive elements of each row being connected to form M first terminals, and the second outputs of the M pressure sensitive elements of each column being connected to form N second terminals.
8. The passenger number monitoring system of claim 7, wherein the signal preprocessing module is coupled to the M first terminals and the N second terminals of the pressure sensing element.
9. A passenger number monitoring system according to any one of claims 1-4, wherein the signal preprocessing module comprises: the circuit comprises an amplifying circuit, a filter circuit, an analog-to-digital conversion circuit and a voltage limiting circuit;
the amplifying circuit is connected with the at least one pressure sensing element and is used for amplifying the electric signal output by the at least one pressure sensing element;
the filter circuit is connected with the amplifying circuit and is used for filtering clutter in the amplified electric signal output by the amplifying circuit;
the analog-to-digital conversion circuit is connected with the filter circuit and is used for converting the filtered analog signals into digital signals;
the voltage limiting circuit is connected with the analog-to-digital conversion circuit, stores a voltage limiting threshold value in advance, and is used for filtering digital signals which are not in the voltage limiting threshold value range.
10. A passenger number monitoring system according to any one of claims 1 to 4, wherein the pressure sensing element comprises a first electrode layer, a first polymer insulating layer, and a second electrode layer, which are stacked; the opposite surfaces of the first electrode layer and the first high-molecular polymer insulating layer form a friction interface;
or the pressure sensing element comprises a first electrode layer, a first high polymer insulating layer, a second high polymer insulating layer and a second electrode layer which are stacked; the opposite surfaces of the first high molecular polymer insulating layer and the second high molecular polymer insulating layer form a friction interface;
or the pressure sensing element comprises a first electrode layer, a first high polymer insulating layer, an intermediate electrode layer, a second high polymer insulating layer and a second electrode layer which are stacked; the surface of the first high molecular polymer insulating layer opposite to the intermediate electrode layer and/or the surface of the intermediate electrode layer opposite to the second high molecular polymer insulating layer form a friction interface;
or the pressure sensing element comprises a first electrode layer, a first high polymer insulating layer, an intermediate thin film layer, a second high polymer insulating layer and a second electrode layer which are stacked; the surfaces of the first polymer insulating layer opposite the intermediate thin film layer and/or the surfaces of the intermediate thin film layer opposite the second polymer insulating layer form a friction interface.
11. The passenger number monitoring system of claim 10, wherein the first polymer insulating layer and/or the second polymer insulating layer and/or the intervening thin film layer is a composite film doped with a dielectric material.
12. The passenger number monitoring system of claim 11, wherein the composite film doped with a dielectric material comprises a first film layer and a second film layer; the second thin film layer is disposed over the first thin film layer;
the first thin film layer is formed by vacuum degassing and curing a polymer substrate solution without doping a dielectric material;
the second thin film layer is formed by vacuum degassing and curing of composite film slurry doped with dielectric materials, wherein the composite film slurry is prepared by mixing a polymer base solution and the doped dielectric materials.
13. The passenger number monitoring system of claim 11, wherein the dielectric-doped composite film is formed by vacuum degassing and curing a dielectric-doped composite film slurry; wherein the composite film slurry is prepared by mixing a polymer substrate solution and a doped dielectric material.
14. A passenger number monitoring system according to claim 12 or 13, wherein the dielectric material has a higher dielectric constant than the polymer base material.
15. A passenger number monitoring system according to claim 12 or 13, wherein the dielectric material is ZnO, TiO2、SnO、SiO2And WO3Any one or more of them.
16. A passenger number monitoring system according to claim 10, wherein at least one of the two surfaces forming the friction interface is provided with a raised array structure.
17. A passenger number monitoring system according to claim 12, wherein the first film layer constituting at least one of the two surfaces of the friction interface is provided with a raised array structure.
18. The passenger vehicle occupant count monitoring system according to claim 10, wherein a resilient support is disposed between two surfaces of said friction interface, said resilient support being an annular gasket, a grid-like spacer or a plurality of columnar support points.
19. A passenger number monitoring system according to any one of claims 1-4, wherein the pressure sensing element is made of a piezoelectric material.
20. The passenger vehicle occupant count monitoring system of claim 19, wherein said piezoelectric material comprises ZnO, PZT, or PVDF.
21. A passenger number monitoring system according to any one of claims 1-4, wherein the passenger number monitoring system further comprises a storage module for storing the detection result.
22. A passenger number monitoring system according to any one of claims 1-4, further comprising a display module for displaying the detection result.
23. A passenger number monitoring system according to any one of claims 1-4, further comprising a power module.
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| CN201720603590.6U CN206863823U (en) | 2017-05-26 | 2017-05-26 | Bus occupant number monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693240A (en) * | 2018-01-10 | 2018-10-23 | 纳智源科技（唐山）有限责任公司 | Humidity detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693240A (en) * | 2018-01-10 | 2018-10-23 | 纳智源科技（唐山）有限责任公司 | Humidity detector |
| CN108693240B (en) * | 2018-01-10 | 2024-04-16 | 纳智源科技（唐山）有限责任公司 | Humidity detection device |
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