Abstract:
A system includes a two dimensional display device coupled to control circuitry. The control circuitry establishes a two dimensional representation of at least first and second floors of a building. Responsive to a selected input closed boundaries are established which surround the two dimensional representations of each floor. Responsive to at least one other input, first and second coordinate systems are established with one coordinate system associated with each boundary. Three dimensional information can be established relative to the various devices installed on each floor, and, simulations of operation can be carried out. An installer can move various of the devices and re-run the simulation to evaluate which configuration provides a better communication result.

Description:
FIELD 
       [0001]    The application pertains to systems and methods to facilitate installation of wireless devices in buildings. More particularly, the application pertains to such systems and methods where only a two dimensional display device is needed to visualize and install such devices in a multi-story building. 
       BACKGROUND 
       [0002]    Installers of alarm indicating or monitoring systems may rely on one or more two dimensional drawings illustrating floor plans of various floors of a building. Such drawings, or diagrams, may need to be related to three dimensional information pertaining to the building. 
         [0003]    For example, information pertaining to vertical distances between floors or relative to distance to ground level may be of importance. Further, the relationships of objects such are alarm indicators or various types of detectors on different floors may be important. 
         [0004]    Commonly available tools such as laptop computers, or tablet computers usually include two dimensional displays. From cost and convenience perspectives, it would be advantageous to be able to address three dimensional issues in connection with building installations using the two dimensional displays of such commercially available tools 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0005]      FIG. 1  is a diagram of a system in accordance herewith; 
           [0006]      FIG. 2  illustrates aspects of an exemplary process; 
           [0007]      FIG. 3  illustrates installed devices in an exemplary building; 
           [0008]      FIG. 4  illustrates establishing a distance reference; 
           [0009]      FIG. 5  illustrates selecting a first floor; 
           [0010]      FIG. 6  illustrates selecting a second floor; and 
           [0011]      FIG. 7  illustrates locating first and second origins of coordinate systems relative to a respective floor image. 
       
    
    
     DETAILED DESCRIPTION 
       [0012]    While disclosed embodiments can take many different forms, specific embodiments hereof are shown in the drawings and will be described herein in detail with the understanding that the present disclosure is to be considered as an exemplification of the principles hereof, as well as the best mode of practicing same, and is not intended to limit the claims hereof to the specific embodiment illustrated. 
         [0013]    In embodiments hereof, an installer can use a computer, a tablet PC or laptop, for example which is executing a software tool to plan the installation of a system of wireless devices in a building. For example a single two dimensional floor plan map, or representation, can be displayed on the computer screen. Such images can be created by importing, mixing or editing the respective two dimensional drawings. 
         [0014]    The user is then able to interact with the display and to choose the positions of wireless devices and other objects which could affect transmissions in the radio system. The quality of the radio communications between the devices can be simulated and evaluated. 
         [0015]    A variety of inputs can be provided in order to implement such simulations. These include, without limitation, the locations and types of wireless devices and other objects such as speakers, or alarm indicating output devices, along with other inputs which can be requested of or by a user, including for example metric or other types of reference systems and the types of environments. 
         [0016]    As those of skill will understand, the accuracy of such simulations depends on the accuracy of the location information, such as cartesian coordinates, of the devices and objects in or being installed in the region of interest. 
         [0017]    Embodiments hereof also provide to the user capabilities to view and manipulate parts of the site belonging to different floors of the building. For example, floor information can be used to translate devices and objects from a two dimensional space to a three dimensional space to improve simulation accuracy. 
         [0018]    In yet another aspect, an easy to use graphical method is provided by which a user can assign representations, devices or objects to various floors of a building. 
         [0019]      FIG. 1  illustrates a system  10  in accordance herewith.  FIGS. 2-7  illustrate aspects of exemplary methods in accordance herewith. 
         [0020]    System  10 ,  FIG. 1 , illustrates a side sectional view of a portion of a building B with three floors F 1 , F 2 , and F 3 . Spaces S 1 , S 2  and S 3  are defined between each respective floor and the associated ceiling. 
         [0021]    Pluralities of detectors, such as  12 ,  20 ,  24  are illustrated installed in the respective spaces S 1 , S 2 , S 3 . Output devices  14 ,  22  of various types are scattered through the respective spaces, S 1 , S 2 . The following comments apply equally to space S 3  and associated detectors  24 . Those of skill will understand that no further specific discussion of space S 3  is needed. Further, the number of floors of  FIG. 1  is exemplary only and not a limitation hereof. 
         [0022]    The various types of devices  12 ,  14 ,  20 ,  22  and  24  can communicate wirelessly with a local control system  16 . Control system  16  includes control circuits  16   a  which can be implemented, at least in part with a programmable processor  16   b  and executable control instructions  16   c.  An antenna  16   d  facilitates communications with the various detectors and output devices. 
         [0023]    Control system  16  can be in wireless communication, via the Internet or intranet with a displaced monitoring station  18 . As those of skill will understand, a wired control system (similar to system  16  but wired to at least some of the detectors) can be coupled via cable or wires to a gateway. The gateway can in turn provide wireless communications to other devices or detectors as needed. 
         [0024]    An installer I is illustrated with a computer  20  that has a two dimensional display unit  22 . The computer and display unit  22 , as discussed below can be used to assist in a system installation, or modification process. It will be understood that the installer I need not be inside of the building B. 
         [0025]    With respect to  FIG. 2 , the installer&#39;s computer  20  shows on its interface, or display unit  22 , two dimensional plan views of two floors F 1 , F 2  of the building B where the installer I is operating. As those of skill will understand, the installation process can include determining the placement of various types of devices, or objects such as smoke detectors, gas detectors, monitoring devices such as intrusion detectors, glass break detectors  12 ,  20 ,  24 , as well as alarm indicating output devices such as, audible output devices  14 ,  22  or speakers, or the like all without limitation. The effects of obstacles, which might alternate or interfere with the wireless RF signals, can also be taken into account in simulation of communications between wireless devices. 
         [0026]      FIG. 3  illustrates floors F 1 , and F 2  with locations specified for various types of ceiling mounted detectors, output devices or the like  12 ,  14 ,  20 . The installer I has specified locations where wireless devices will be installed or where they are already installed usually on the respective ceiling in the case of smoke detectors, but gas detectors are not always ceiling mounted. 
         [0027]    Devices, for example smoke or gas detectors, as in  FIG. 3 , are represented by circles. Output devices, such as  14   i,  and  22   i  are represented by squares. It will be understood that the symbols used to represent the various devices are exemplary only and do not reflect a limitation hereof. Different shapes or coloring of symbols can be used to indicate different types of devices and/or overall functions such as input devices and output devices all without limitation. 
         [0028]    In  FIG. 4  a distance reference  26  has been associated with the floors to facilitation conversion of displayable pixels to distance, for example, meters. 
         [0029]      FIG. 5  illustrates designating a floor such as F 1  on the display. In this regard, the installer has selected the upper part of the display by enclosing it in a closed rectangular region  28 . This region corresponds to the first floor, F 1  of building B, and is indicated by “Floor #0”. 
         [0030]    It will be understood that the exact shape of the boundary regions is not a limitation hereof. Boundary regions of different shapes could also be used. 
         [0031]    An origin AP 0 , for a coordinate system,  30  is established at the left-bottom corner of the floor F 1 . The installer can also set additional parameters for the floor F 1 , for example a ceiling height of three meters can be specified as noted by the point  30 . 
         [0032]    In  FIG. 6 , the second floor F 2  can be selected by the installer by enclosing it in a different closed rectangular region  32 . The installer can specify that the lower part of the display is related to the second floor which is indicted by “Floor #1”. An origin AP 1  for a second coordinate system  34  can be specified in the left-bottom corner of the floor F 2 . The installer can also set additional parameters, for example the ceiling height as an exemplary three meters, as indicated below the origin point  34 . 
         [0033]    With respect to  FIG. 7 , the installer can carry out various simulations given the information relative to floors F 1 , F 2  on the display  22 . The positions of devices installed on the two floors F 1 , F 2  can be converted from two dimensional representations to three dimensional using information associated with each of the floors and the alignment points AP 0  and AP 1 . 
         [0034]    For example, consider, in  FIG. 7 , the devices designated A and B and the alignment points AP 0  (first floor) and AP 1  (second floor). The coordinates X, Y (pixel) of A are decreased by the coordinates X, Y of AP 0 . If A is at (100,300) and AP0 is at (50,280), the new coordinates of A are (50,20). Then the coordinates are converted to meters using the metric reference  26  (conversion from pixel to meter). For example (50,20) pixels becomes (8, 3.2) meters. 
         [0035]    The Z coordinate of A is established starting from 0 meter and adding the heights of the floors under the floor of A. Since A is on the first floor, Z the vertical distance of A remains 0. Then, with device A installed on the ceiling of the room, Z the height parameter is increased by the height of the room that is the height of the first floor (3 m). The final three dimensional coordinates of A are then (8, 3.2, 3). The same process can be used for device B and in this case AP 1  coordinates and first floor height are considered. Similar comments apply to floor F 3 . 
         [0036]    An exemplary form of conversion from two dimensional information to three dimensional can be implemented as follows. Let the two dimensional position of device or object i on the two dimensional map representation be stored as Xi,Yi in pixels (the axis of origin could be any point inside or outside the two dimensional map representation). Search which floor k contains the device or object i, that is which selected shape k contains the device or object i. Decrease Xi by the X-value of the alignment point k. Decrease Yi by the Y-value of the alignment point k. 
         [0037]    Convert Xi, Yi from pixels to meters using the metric reference  26 . Evaluate Zi starting from a default value (for example 0 meter) and increasing it by the ceiling height of the floors [H]j that are under the floor k considering their order [OR]. Based on the device or object type, parameters or characteristics (for example: mounting place) an additional value can be added to Zi. At the end of the process all devices or objects i have three dimensional (Xi,Yi,Zi) assigned coordinates (meters), representing the position in a three dimensional space of device or object i. 
         [0038]    In summary, starting from the screen with the two dimensional map representation the user graphically selects a region of thereof to identify a floor. The selection shape can be any type of closed shape. For example, a rectangular shape can be selected by choosing the two opposite edges of the rectangular area. 
         [0039]    Before (or after) the graphical selection of the closed shape, the installer specifies which floor is related to this selection (first floor, second floor, etc.). All the object and devices contained in closed shape are considered by the software as belonging to that floor. The installer specifies the floor characteristics useful for the software simulation, such as ceiling height [H] of the floor, material of the ceiling, etc. Default values can also be proposed or applied. 
         [0040]    The installer chooses a point of [RA] that will be the ALIGNMENT POINT [AP], origin of the coordinate system of the floor. The origin can be either inside or outside of selected shape. In other words, [AP] represents the origin of the two dimensional cartesian system for the selected shape, and, hence for the floor. The tool  20 ,  22  provides clear, easy to read and understand visual information for the installer indicating that both [S] and [AP] belong to the same floor along with any other information which might be useful for the user during installation process. Such information can be provided by a textual label at the origin point, and can include, but is not intended to be limited to a description of the floor region, or floor characteristics. 
         [0041]    The procedure is repeated individually for each floor in the map representation specified by the installer. The result is a set of shape selections i and a set of alignment points, the origins of the respective Cartesian coordinate systems. The installer I can assign the order of the floors on Z-axis before, during or after the graphical selections. 
         [0042]    If a device or another object involved in the radio system simulation doesn&#39;t belong to any selected shape, meaning that it is not assigned to a floor, the tool  20 ,  22  can provide a warning indication to the installer and can stop other operations Alternately, it can assign the item to a default floor taking into account floor plan options or installer decisions. When the software performs operations requiring positions of the devices and the other objects as input parameters, a process is used to translate the two dimensional coordinates of any object or device in a three dimensional space using information concerning the floors and the alignment points or origin of the respective coordinate systems. 
         [0043]    From the foregoing, it will be observed that numerous variations and modifications may be effected without departing from the spirit and scope of the invention. It is to be understood that no limitation with respect to the specific apparatus illustrated herein is intended or should be inferred. It is, of course, intended to cover by the appended claims all such modifications as fall within the scope of the claims. 
         [0044]    Further, logic flows depicted in the figures do not require the particular order shown, or sequential order, to achieve desirable results. Other steps may be provided, or steps may be eliminated, from the described flows, and other components may be add to, or removed from the described embodiments.