CN110714589A - Information-based raised floor system - Google Patents

Abstract

An information-based raised floor system, comprising: the system comprises a floor, a supporting seat and an information acquisition unit, wherein the information acquisition unit comprises a sensor arranged in the supporting seat, a CAN bus connected with adjacent sensors in series and a central controller, and the supporting seat is positioned below the floor, is used for making the floor overhead, is distributed below the floor in an array manner, is used for acquiring a pressure signal on the floor and transmits the pressure signal to the central controller; the supporting seat distributes in the limit portion on floor to at least one supporting seat is evenly arranged to every floor below, and the floor is supported on the basic unit by the supporting seat, makes somebody a mere figurehead with the floor through the supporting seat, guarantees the equilibrium in hand, and the sensor array in the supporting seat distributes to through CAN bus communication, solve the multisensor interconnecting link among the prior art problem complicated, the poor scheduling problem of communication reliability.

Description

Information-based raised floor system

Technical Field

The invention relates to the field of fabricated raised floors, in particular to an information raised floor system with a pressure sensor array.

Background

The floor, which is the main support for the activity, can be used to collect various signals and obtain the desired data by analyzing the body's behavior or other measured parameters through the collected information. In the prior art, sensors are distributed under the floor and used for collecting pressure changes generated by human walking and detecting behavior activities, and the pressure is connected with the real-time measurement of the floor, so that the digital level of the human living environment is greatly improved, and the ground pressure of one point is obtained and the pressure measurement is changed into multi-point pressure measurement. The measurement technology can be widely used in a plurality of scenes. For example, the ground pressure can be used for judging whether a certain door can be opened or not, and the anti-theft function is achieved. And for example, the ground pressure can effectively obtain about who is in the house, so that corresponding services can be provided, and the like. These are new capabilities obtained on the basis of measurements by multiple pressure sensors, usually by distributing the sensors directly under the floor, which results in inaccurate data acquisition, and the deformation generated when a load is directly applied to the sensors is very different from the deformation generated when a load is applied around, resulting in a large data acquisition error. The arrangement mode and the signal acquisition mode of the sensors are factors influencing data accuracy, the scheme adopted by the prior art is to respectively acquire and upload sensor data, a general sensor array adopts an RS-485 bus to carry out data communication, and a master-slave answering mode is adopted during communication. The pressure sensor collects self data and waits for a host signal; if the receiving is correct, the data is uploaded directly. Each pressure sensor needs to upload in this manner. The first disadvantage of the prior art is that, firstly, the prior art must set a delay according to a specific usage scenario, which results in a long delay of a system, and data is not easy to be sorted due to data dispersion. It is less advantageous to detect human occupancy when the frequency of detection is low. The detection frequency of the prior art is low, and when the sensor array has many nodes, the detection frequency of the system is further reduced, and the system availability is poor. Secondly, the communication reliability and the system bus reliability are poor, all sensors are possibly affected when bus problems occur, the reliability design in the prior art is poor, the connecting line in the prior art is relatively complex for field actual installation, and large-scale installation, debugging and use are not easy to achieve. Again, prior to installation of the floor, a technician must address each pressure sensor. The address can not be changed after being coded, and is not easy to change, thereby solving the problem of changing the address of the sensor array. The construction convenience is always influenced, and the application of the existing pressure sensor array on the floor is very expensive because the specialized degree of actual operation and debugging personnel is high, the pressure sensor array cannot be installed by a common person, and the cost is high, which is one of the defects of the existing pressure sensor.

This application is on foretell technical problem's basis, and it is built on stilts with the floor, supporting seat evenly distributed in the floor below, the pressure on homodisperse floor for bear a burden in any position on floor, reaction that all CAN be even is on the supporting seat, distributes pressure sensor in the supporting seat, and connect the sensor communication that distributes the array through the CAN bus, make the data of obtaining quick accurate.

Disclosure of Invention

In order to solve the problems, the invention aims to provide an information-based raised floor system, which is characterized in that a floor is raised through a support seat to ensure the balance in hands, sensor arrays in the support seat are distributed and are communicated through a CAN bus, and the problems of complex connecting lines of multiple sensors, poor communication reliability and the like in the prior art are solved.

The technical scheme adopted by the invention for solving the technical problems is as follows: an information-based raised floor system, comprising: the system comprises a floor, a supporting seat and an information acquisition unit, wherein the information acquisition unit comprises a sensor arranged in the supporting seat, a CAN bus connected with adjacent sensors in series and a central controller, and the supporting seat is positioned below the floor, is used for making the floor overhead, is distributed below the floor in an array manner, is used for acquiring a pressure signal on the floor and transmits the pressure signal to the central controller; the supporting seats are distributed at the edges of the floor, at least one supporting seat is evenly arranged below each floor, and the floor is supported on the base layer through the supporting seats.

Further, the supporting seat comprises an overhead shell and a sensing buffer structure, the overhead shell is in contact with the floor, pressure change signals borne by the floor are conducted to the pressure sensor, and the sensing buffer structure is used for bearing deformation of the pressure sensor and supporting the supporting seat and the base layer.

Furthermore, pressure sensor comprises central processor, CAN bus transceiver, strain gauge pressure sensor, the differential circuit that weighs, button, power, the port of shaking hands.

Further, built on stilts casing includes support column, floor fixed block, casing main part, load ring and strengthening rib, the one end and the floor fixed block fixed connection of support column, floor fixed block are used for supporting the limit portion on floor, and the other end of support column inserts in the load ring to with casing main part fixed connection, load ring fixed connection is at the center of casing main part, the strengthening rib includes a plurality of, strengthening rib evenly distributed is in around the load ring.

Furthermore, the height of the reinforcing rib is gradually reduced from the center to the outside and is fixedly connected with the shell body, and the reinforcing rib is fixedly connected with the outer wall of the bearing ring to play a role in dispersing pressure.

Furthermore, the cross section of the floor fixing block is of a convex structure, is used for supporting two adjacent floors and is not higher than the surfaces of the floors.

Furthermore, the overhead shell comprises a shell body and four separating sheets, the separating sheets are evenly and symmetrically arranged along the diagonal direction of the shell body, adjacent separating sheets are perpendicular to each other and are fixedly connected with the shell body, the height of each separating sheet is not more than the thickness of the floor, and corners of the floor are clamped between the adjacent separating sheets.

Further, the sensing buffer structure comprises an upper cushion layer, a lower cushion layer and a supporting layer, the pressure sensor is arranged between the upper cushion layer and the lower cushion layer, the supporting layer is arranged below the lower cushion layer, the shapes of the upper cushion layer, the lower cushion layer and the supporting layer are adapted to the sensor, and a notch through which a line can pass is formed in the lower cushion layer.

Further, four strain type pressure sensors are arranged in the pressure sensor, and are evenly distributed in the supporting seat.

Further, the strain-type pressure sensor is located between the upper pad layer and the lower pad layer, and the thickness of the upper pad layer does not exceed a circular protruding point on the strain-type pressure sensor.

The invention has the advantages that:

1. the floor is erected by the supporting seat, so that the stress of the floor is uniformly dispersed and is supported on the supporting seat, the sensor is arranged in the supporting seat, the sensor is internally provided with a plurality of sensors, the average stress of a floor base layer is measured, and the measurement error caused by the unevenness of materials, seams or uneven bottom surface when the sensor is arranged under a decorative surface layer (such as a wood floor, a carpet and the like) can be avoided; four corners of each floor are provided with supporting seats, four sensors are arranged in each supporting seat, namely 16 signals are acquired after single-point stress of each floor, and final data are obtained through calculation, so that measured data are accurate;

2. the sensors are connected and distributed by adopting a linear bus structure, so that the cable arrangement can be effectively reduced, the cost is saved, the wiring utilization rate is improved, the cross of the cable is reduced during the actual wiring, the mounting reliability is further improved, the mounting speed is improved, and the professional difficulty of mounting is reduced; the sensor array adopts CAN bus communication, has improved the stability of system to the at utmost, and the anticollision mechanism of CAN bus CAN let the communication become more reliable swift, adopts the communication mode that once calls whole uploads, makes communication efficiency further improve, and is more high-efficient. The CAN bus has strong anti-interference capability. The system can be used in floor projects, and has a high mechanism for a bus; the maximum value, the minimum value and the last real-time value in multiple measurements are transmitted through the data frame of each communication, so that the monitoring capability of the system can be effectively improved. Both the maximum and minimum pressure values may be used in the data analysis

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a first structural schematic diagram of the present invention.

Fig. 2 is a second structural schematic diagram of the present invention.

Fig. 3 is a first structural schematic view of the support base of the present invention.

Fig. 4 is a second schematic structural view of the support base of the present invention.

FIG. 5 is an enlarged view of a portion of FIG. 1 of the present invention.

FIG. 6 is a system diagram of an array pressure sensor of the present invention.

FIG. 7 is a schematic diagram of an array relationship of pressure sensors according to the present invention.

Wherein: 1. a support pillar; 2. a snap ring; 3. a force bearing ring; 4. reinforcing ribs;

5. a housing main body; 6. an upper gasket A; 7. an inductor; 8. a lower gasket;

9. a support layer; 10. a floor fixing block; 11. a floor; 13. a separator;

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

An information raised floor system as shown in fig. 1 and fig. 2 is characterized in that: the system comprises a floor, a supporting seat and an information acquisition unit, wherein the information acquisition unit comprises a pressure sensor arranged in the supporting seat, a CAN bus connected with adjacent sensors in series and a central controller, and the supporting seat is positioned below the floor, is used for making the floor overhead, is distributed below the floor in an array manner, is used for acquiring a pressure signal on the floor and transmits the pressure signal to the central controller; the supporting seats are distributed at the edges of the floor, at least one supporting seat is evenly arranged below each floor, and the floor is supported on the base layer through the supporting seats.

As shown in fig. 1 and 3, two adjacent floors share one supporting seat on both sides of the floor with the supporting seats evenly distributed, and a certain gap is formed between the supported floor and the ground base layer, so that the stress of the whole floor is borne by the supporting seats; fig. 1 shows a floor panel which is elongated and has a certain thickness.

A supporting seat for supporting higher floor or uneven ground, built on stilts casing includes support column, floor fixed block, casing main part, load ring and strengthening rib, the one end and the floor fixed block fixed connection of support column, floor fixed block are used for supporting the limit portion on floor, and the other end of support column inserts in the load ring to with casing main part fixed connection, load ring fixed connection is at the center of casing main part, the strengthening rib includes a plurality of, strengthening rib evenly distributed is in around the load ring. The lower extreme of support column is the screw thread end, with the spiro union of load ring, can adjust the height on floor through rotatory support column, adapts to the unevenness and gets ground, and the end of support column can be through the nut locking.

Furthermore, the height of the reinforcing rib is gradually reduced from the center to the outside and is fixedly connected with the shell body, and the reinforcing rib is fixedly connected with the outer wall of the bearing ring to play a role in dispersing pressure.

As shown in fig. 5, the cross section of the floor fixing block is in a convex structure, so as to support two adjacent floors, and the height of the floor fixing block is not higher than the surface of the floor. The floor fixed block is fixedly connected with the top end of the supporting column, the two sides of the convex shape support the edge part of the floor, the shape is adaptive to the edge shape of the floor, the floor can be supported by the convex shape without being limited to the shape, and the floor is not provided with an overlarge gap when being spliced.

As shown in fig. 2 and 4, the supporting seat is provided with four separating sheets, the separating sheets are evenly and symmetrically arranged along the diagonal direction of the shell body, adjacent separating sheets are vertical to each other and are fixedly connected with the shell body, the height of each separating sheet does not exceed the thickness of the floor, and the corners of the floor are clamped between the adjacent separating sheets. The supporting seat is suitable for occasions with basically flat ground and limited overhead height; the floor is square, and the supporting seat is installed in the four corners on floor, and adjacent floor sharing supporting seat, on average every floor have the area of at least one supporting seat to support.

The two supporting seats comprise an overhead shell and a sensing buffer structure, the overhead shell is in contact with the floor, pressure change signal transmission and a pressure sensor which are borne by the floor are conducted, and the sensing buffer structure is used for bearing deformation of the pressure sensor and supporting the supporting seats and the base layer. The shell body is made of steel plates, four sides of the shell body are turned downwards to form a certain cavity, and the sensing buffer structure wraps the sensor and is arranged in the shell body.

As shown in fig. 3 and 4, the sensing buffer structure includes an upper pad layer, a lower pad layer, and a support layer, the pressure sensor is disposed between the upper pad layer and the lower pad layer, the support layer is disposed below the lower pad layer, the upper pad layer, the lower pad layer, and the support layer are adapted to the sensor in shape, and a gap through which a line can pass is disposed on the lower pad layer. The upper gasket and the lower gasket are rigid elastic gaskets, the upper gasket is a limiting gasket, and the sensor is stressed in such a way that a middle circular protruding point and a connected moving plate can deform downwards and give out the change of the resistance value in the deformation. When pressure increases to the certain degree, the salient point will fall and level with the last edge of last gasket, and at this moment pressure is direct to be passed through the limiting plate downwards, plays the guard action that prevents pressure sensor overpressure damage. The lower gasket is a connecting plate, and has the functions of providing space for wires on one hand and connecting upper and lower parts and also has the function of pressure diffusion on the other hand. The lowest supporting layer is a rubber cushion and plays a role in preventing skidding and reducing tiny unevenness of the ground.

The sensor is not limited to a pressure sensor, but may be a humidity sensor, a capacitance sensor, or the like to achieve different functions.

The invention takes a pressure sensor as an example to further explain the direction of information acquisition and signal transmission; the pressure sensors form an array and communicate with an upper computer or a central controller.

A pressure sensor array is formed by connecting at least two pressure sensors in series, adjacent pressure sensors are connected in series through a handshake port 7, and the address and the sequence of each pressure sensor are obtained through a cascade handshake system to form the pressure sensor array. The sensor array may obtain a plurality of surface pressure information to send each pressure sensor information to the central controller. The central controller is a core node of the whole system, and the clock beat of the system is sent out by the central controller, so that the pressure data of the whole sensor array is obtained. The data can be stored or analyzed in a certain arrangement mode. The central controller can be a system-level computer or a single-chip system. The pressure sensor communicates with the central controller through a CAN bus.

Furthermore, pressure sensor comprises central processor, CAN bus transceiver, strain gauge pressure sensor, the differential circuit that weighs, button, power, the port of shaking hands. The central processor consists of a CPU, an internal memory, a high-speed clock, a power supply management and an interface I/O, CAN bus controller.

Each pressure sensor comprises four strain type pressure sensors which form a weighing differential circuit, errors can be removed by the weighing differential circuit through bridge connection, the pressure can be measured by the system repeatedly more accurately, and the system finally obtains a stable pressure value through repeated calculation of voltage variation (△ U).

The power supply supplies power for the central processor, the weighing differential circuit and the keys.

The CAN bus transceiver is communicated with other external modules through signals of a CAN bus controller in the receiving center processor, so that pressure data obtained by weighing is uploaded.

The handshake port connects all pressure sensors in series and handshakes one by one. The address and sequencing order of each pressure sensor can be known through the cascade handshaking system. This approach allows large scale series connection of pressure sensors to form a sensor array.

The port of shaking hands including going into the port of shaking hands, going out the port of shaking hands, CAN bus, power, go into the port of shaking hands, go out the port of shaking hands and gather to eight port net gapes through the cable conductor. The physical connection is an eight-port network port which is connected with two pressure sensors in series through a network cable.

Each pressure sensor is realized by a set of complete circuit principle, and each pressure sensor consists of a central processor, a CAN bus transceiver, a strain type pressure sensor, a weighing differential circuit, a key, a power supply and a handshake port.

Each central processor comprises CPU, internal memory, high-speed clock, power management, interface I/O, CAN bus controller.

The R3 resistor is a strain type pressure sensor, when a certain voltage (U) is applied to A, C points in the figure, B, D points generate voltage change under the condition that R3 changes so as to convert the pressure into voltage change, and the system finally obtains a stable pressure value by repeatedly calculating the voltage change (△ U), as shown in figure 3.

The power module can be used for supplying power for the central processor, the weighing differential circuit and the keys.

The CAN bus transceiver is communicated with other external modules by receiving CAN bus controller signals in the central processor. Thereby uploading the weighing data.

The other hand-shaking port can connect all the pressure sensors in series and shake hands one by one. The address and sequencing order of each pressure sensor can be known through the cascade handshaking system. This approach allows large scale series connection of pressure sensors to form a sensor array.

The pressure sensor array is arranged in a sequence that a plurality of pressure sensors are connected below the central controller in series, each pressure sensor is connected with the next pressure sensor through a network cable, and the cost of communication hardware can be reduced to the greatest extent by using the network cable.

The CAN bus, the power supply, the handshake-in port and the handshake-out port CAN be gathered through eight cables of the network port. And forming a standard interface, and completing the serial connection and the plug-in between the modules in a plug-in mode. The connection relationship is innovative and can quickly form a pressure sensor array, automatic sequencing and addressing can be realized, and a specific schematic diagram of the array relationship is shown in fig. 7.

A plurality of independent nodes are connected into a network so as to flexibly adapt to the condition of laying a large area and stably collect data at a high speed; the independent nodes are divided into a main control node and a plurality of slave nodes; all nodes are connected by adopting a high-speed collision-free wired bus network, the embodiment is a high-speed linear CAN bus, all nodes are automatically found through handshake signaling at the initial laying stage, and addresses (numbers) are distributed; in operation, any single node is damaged, and the work and data collection of other intact nodes cannot be caused.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An information-based raised floor system, comprising: the system comprises a floor, a supporting seat and an information acquisition unit, wherein the information acquisition unit comprises a sensor arranged in the supporting seat, a digital communication bus connected with adjacent sensors in series and a central controller, and the supporting seat is positioned below the floor, is used for making the floor overhead, is distributed below the floor in an array manner, is used for acquiring a pressure signal on the floor and transmits the pressure signal to the central controller; the supporting seats are distributed at the edges of the floor, at least one supporting seat is evenly arranged below each floor, and the floor is supported on the base layer through the supporting seats.

2. The information-based raised floor system of claim 1, wherein: the supporting seat comprises an overhead shell and a sensing buffer structure, the overhead shell is in contact with the floor, pressure change signal transmission and a pressure sensor which are borne by the floor are conducted, and the sensing buffer structure is used for bearing deformation of the pressure sensor and supporting the supporting seat and the base layer.

3. The information-based raised floor system of claim 1, wherein: the sensor is a pressure sensor, and the pressure sensor consists of a central processor, a CAN bus transceiver, a strain type pressure sensor, a weighing differential circuit, a key, a power supply and a handshake port.

4. The information-based raised floor system of claim 2, wherein: the built on stilts casing includes support column, floor fixed block, casing main part, load ring and strengthening rib, the one end and the floor fixed block fixed connection of support column, floor fixed block are used for supporting the limit portion on floor, and the other end of support column inserts in the load ring to with casing main part fixed connection, load ring fixed connection is at the center of casing main part, the strengthening rib includes a plurality of, strengthening rib evenly distributed is in around the load ring.

5. The information-based raised floor system of claim 4, wherein: the height of the reinforcing rib is gradually reduced from the center to the outside and is fixedly connected with the shell body, and the reinforcing rib is fixedly connected with the outer wall of the bearing ring to play a role in dispersing pressure.

6. The information-based raised floor system of claim 4, wherein: the cross section of the floor fixing block is of a convex structure, is used for supporting two adjacent floors and is not higher than the surfaces of the floors.

7. The information-based raised floor system of claim 2, wherein: the overhead shell comprises a shell body and four separating sheets, the separating sheets are evenly and symmetrically arranged along the diagonal direction of the shell body, adjacent separating sheets are perpendicular to each other and are fixedly connected with the shell body, the height of each separating sheet is not more than the thickness of a floor, and corners of the floor are clamped between the adjacent separating sheets.

8. The information-based raised floor system of claim 2, wherein: the sensing buffer structure comprises an upper cushion layer, a lower cushion layer and a supporting layer, wherein the pressure sensor is arranged between the upper cushion layer and the lower cushion layer, the supporting layer is arranged below the lower cushion layer, the shapes of the upper cushion layer, the lower cushion layer and the supporting layer are adapted to the shape of the sensor, and a notch for a circuit to pass through is formed in the lower cushion layer.

9. An information raised floor system as set forth in claim 3, wherein: four strain type pressure sensors are included in the pressure sensor, and the strain type pressure sensors are evenly distributed in the supporting seat.

10. The information-bearing raised floor system of claim 9, wherein: the strain type pressure sensor is positioned between the upper cushion layer and the lower cushion layer, and the thickness of the upper cushion layer does not exceed a circular protruding point on the strain type pressure sensor.

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