JP2014096763A - Measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measuring device capable of accurately identifying installation positions of measuring units that transmit measurement data to a main body by radio.SOLUTION: A measuring device includes a main body that has a touch panel 12, and measuring units that perform measurement and transmit measurement data to the main body by radio. The measuring device further includes positional relationship acquisition means for acquiring a positional relationship between the main body 1 and measuring units; and the main body 1 displays the positional relationship acquired by the positional relationship acquisition means on the touch panel 12 with figures and numerical values.

Description

  The present invention relates to a measurement apparatus that wirelessly transmits measurement data from a measurement unit to a main body.

  A measurement unit that measures measurement data such as temperature, humidity, wind direction, pressure, flow rate, illuminance, electrical characteristics, mechanical characteristics, etc. is installed at the position of the measurement object, and the main unit is placed at the resident position of the measurer. There is a measuring device that is carried around by a measurer and wirelessly collects data from the measuring unit to the main body. An example of such a measuring apparatus is described in Patent Document 1.

  The automatic meter reading system described in Patent Literature 1 includes a meter device (measurement unit) that measures meter reading data such as electricity and gas and transmits measurement data from a wireless device, and a wireless device that receives transmitted measurement data. And a monitoring center (main body) connected by a communication line.

JP 2002-152853 A

  As in the automatic meter reading system described in Patent Document 1, in a measurement apparatus that wirelessly communicates measurement data from the measurement unit to the main body, the measurement unit is installed at an arbitrary location away from the main body. The position may not be known.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a measurement apparatus that can accurately know the installation position of a measurement unit that wirelessly transmits measurement data to a main body.

  The measuring apparatus according to claim 1, which has been made to achieve the above object, includes a measurement unit that measures measurement data, and a main body having a display unit, each including a wireless communication unit. A measurement apparatus that wirelessly transmits measurement data from the measurement unit to the main body, wherein the main body and the measurement unit include a positional relationship acquisition unit for acquiring a positional relationship between the main body and the measurement unit. The main body can display the positional relationship acquired by the positional relationship acquiring means on the display unit.

  The measurement apparatus according to claim 2 is the measurement apparatus according to claim 1, wherein the main body has a distance to the measurement unit and a position of the measurement unit as the positional relationship between the main body and the measurement unit. The direction can be displayed on the display unit.

  A measuring apparatus according to a third aspect is the one according to the first or second aspect, wherein the main body can display a diagram showing the positional relationship between the main body and the measuring unit on the display unit. It is characterized by being.

  A measuring apparatus according to a fourth aspect is the measuring apparatus according to the third aspect, wherein the main body includes a direction detection unit that detects a direction of the main body, and the direction of the main body that is detected by the direction detection unit is The display unit can be displayed in the same orientation as the figure.

  The measuring device according to claim 5 is the measuring device according to claim 3 or 4, wherein the main body includes a map storage unit that stores a map, and the map is superimposed on the map to It is possible to display on the display unit.

  The measuring apparatus described in Claim 6 is described in any one of Claim 1 to 5, The said main body can display the positional relationship of several said measurement units on the said display part. It is characterized by that.

  A measuring apparatus according to a seventh aspect is the apparatus according to any one of the first to sixth aspects, wherein, as the positional relationship acquisition unit, the main body and the measurement unit each indicate position information indicating its own position. The measurement unit is configured to wirelessly transmit the position information indicating the acquired own position to the main body by the wireless communication unit.

  The measurement apparatus according to claim 8 is the measurement apparatus according to claim 7, wherein the position information acquisition unit receives a radio wave for position measurement transmitted from an artificial satellite to determine its own position. It is a positioning device which performs.

  A measuring apparatus according to claim 9 is the measuring apparatus according to claim 7, wherein the position information acquisition unit calculates the intensity of each radio wave transmitted from a plurality of radio stations on the ground whose positions are fixed. It is a positioning device that measures and measures its own position based on the intensity of the plurality of radio waves.

  A measuring apparatus according to a tenth aspect is the apparatus according to any one of the first to sixth aspects, wherein, as the positional relationship acquisition unit, the main body includes a plurality of radio stations on the ground whose positions are fixed. Each of the radio waves transmitted from the plurality of radio stations includes a positioning device that measures the intensity of each radio wave to be transmitted and measures the position based on the intensity of the plurality of radio waves. And the measured radio wave intensity is transmitted to the main body by the wireless communication unit, and the positioning device included in the main body is configured to detect the intensity of the measurement unit based on the radio wave intensity measured by the measurement unit. The position is determined.

  A measuring apparatus according to an eleventh aspect is the apparatus according to any one of the first to sixth aspects, wherein, as the positional relationship acquisition unit, the main body transmits an exploration wave and is reflected by a measurement object. A radar is provided that receives the exploration wave and measures the position of the measurement object, and the measurement unit includes a reflector that reflects the exploration wave.

  According to the measurement apparatus to which the present invention is applied, the main body and the measurement unit include the positional relationship acquisition means for acquiring the positional relationship between the main body and the measurement unit, and the main body displays the positional relationship acquired by the positional relationship acquisition means. Since it can be displayed on the section, the operator can accurately know the installation position of the measurement unit. Therefore, for example, the operator can quickly collect the measurement unit without searching for the measurement unit.

  When the main body can display the distance and direction to the measurement unit on the display unit, the operator can know the position of the measurement unit specifically and accurately.

  When a diagram showing the positional relationship between the main body and the measurement unit can be displayed on the display unit, the operator can intuitively and quickly understand the position of the measurement unit by illustration.

  If the main body is equipped with an orientation detection unit and can be displayed on the display unit with the orientation of the figure aligned with the orientation of the main body, even if the orientation of the main body is changed, the orientation of the figure is displayed in the same direction as the actual location, The figure is easy to see and the position of the measurement unit is easy to understand.

  When the main body is provided with a map storage unit and can be displayed on the display unit by superimposing diagrams on the map, the operator can also know the surrounding situation from the map, so that the position of the measurement unit becomes easier to understand.

  Furthermore, when the main body can display the positional relationship between a plurality of measurement units on the display unit, for example, when the operator collects a plurality of measurement units, it can be known which measurement units are close to each other, so that the efficient order The measurement unit can be recovered.

  As the positional relationship acquisition means, the main body and the measurement unit each include a position information acquisition unit that acquires position information indicating its own position, and when the position information acquired by the measurement unit is transmitted to the main body wirelessly, from each position information An accurate positional relationship can be displayed.

  When the position information acquisition unit is a positioning device that receives a position measurement radio wave transmitted from an artificial satellite and measures its own position, highly accurate position information can be acquired, so a more accurate positional relationship can be obtained. Can be identified and displayed.

  When the position information acquisition unit is a positioning device that measures the strength of each radio wave transmitted from a plurality of radio stations on the earth whose position is fixed, and measures the position based on the strength of these radio waves The positional relationship can be acquired even in a place where radio waves from the satellite cannot be received. Further, when the positioning device of the main body determines the position of the measurement unit based on the intensity of the radio wave measured by the measurement unit, the configuration of the measurement unit can be simplified.

  As the positional relationship acquisition means, when the main body is equipped with a radar and the measurement unit is equipped with a reflector that reflects the exploration wave, it can be preferably used particularly in a place where there is a good view such as the sea and there is no shield.

It is a schematic diagram which shows the use condition of the measuring apparatus to which this invention is applied. It is a block diagram of the main body among the measuring apparatuses to which this invention is applied. It is a block diagram of a measurement unit of a measuring device to which the present invention is applied. It is a flowchart explaining the operation | movement in the positional relationship display mode of CPU of a main body. It is a front view of the main body showing a state in which a positional relationship diagram, distance information, orientation information, and the like are displayed on the display unit of the main body. It is a front view of the main body showing a display example in which the orientation of the positional relationship diagram is rotated according to the orientation of the main body.

  Hereinafter, although the form for implementing this invention is demonstrated in detail, the scope of the present invention is not limited to these forms.

  An example of the usage state of the measuring apparatus to which the present invention is applied is shown in FIG. This measurement apparatus includes a main body 1 and measurement units 2 (2A, 2B, 2C), and is configured so that measurement data can be transmitted from each measurement unit 2 to the main body 1 wirelessly. For example, the main body 1 is a data logger that stores measurement data over time.

  As an example, the main body 1 includes a touch panel 12 and an operation unit 23 using operation buttons such as cursor keys on the front surface of a portable housing, and a position information acquisition unit 14 on the surface of the housing. Is provided. In this example, the position information acquisition unit 14 is a GPS (global positioning system) receiver, and is provided in the housing so as to be able to receive radio waves transmitted from a plurality of GPS satellites 101. Although not shown in the drawings, on the side of the main body 1 is an external interface connector for data communication with the outside, for example, a LAN (local area network) connection, and a media slot for inserting a USB memory or a memory card. Is provided. The main body 1 receives the measurement data transmitted by each measurement unit 2 and displays it on the touch panel 12 or outputs it to the outside.

  As an example, the measurement unit 2 includes a position information acquisition unit 33 inside the surface of a portable small casing. In this example, the position information acquisition unit 33 is a GPS receiver, and is provided in the housing so as to be able to receive radio waves transmitted from the GPS satellite 101. Further, a measuring sensor 38 is detachably provided on one side surface of the housing with a connector.

  FIG. 2 shows a block diagram of the main body 1. The main body 1 includes a CPU (central processing unit) 10 serving as a main body control unit, a wireless communication unit 11, a touch panel 12, a position information acquisition unit 14, an orientation detection unit 15, a measurement data storage unit 16, a position information storage unit 17, and An operation unit 23 is provided. Although not shown, the main body 1 incorporates a battery as a power source for operation.

  The CPU 10 operates according to a program stored in a program storage unit (not shown), and comprehensively controls the operation of the main body 1. The CPU 10 also operates as a distance / direction calculation unit 25, a positional relationship diagram creation unit 26, and a drawing processing unit 27, as will be described later. As shown in FIG. 2, each part of the main body 1 is connected to the CPU 10.

  The wireless communication unit 11 includes a wireless transmission circuit and a wireless reception circuit (not shown) and an antenna, and the measurement setting data and measurement data, the position information of the measurement unit 2, and the like are communicated by the measurement unit 2 described later. The unit 32 (see FIG. 3) can communicate (transmit / receive) wirelessly. A well-known thing can be used for the radio | wireless communication parts 11 and 32. FIG. The radio signal may be radio waves, infrared rays, or light. When short-distance communication of about 10 m to several hundred m is performed, if wireless communication units 11 and 32 complying with the Bluetooth (registered trademark) standard are used, miniaturization, availability, and a license are unnecessary. From the above, it is particularly preferable.

  The touch panel 12 is a combination of a display unit 21 such as a liquid crystal panel capable of displaying an image and an operation unit 22 such as a touch pad capable of detecting a contact position. The operation unit 23 is, for example, an operation push button, a keyboard, a mouse, or the like. Instead of using the touch panel 12, a liquid crystal panel may be used as the display unit 21, and push buttons, numerical keys, cursor keys, a keyboard, or the like may be used as the operation units 22 and 23.

  The position information acquisition unit 14 acquires position information indicating the position of the main body 1. The position information acquisition unit 14 is a positioning device that, for example, receives a positioning positioning radio wave transmitted from an artificial satellite and measures its own position. In this example, a GPS receiver is used as a positioning device for such a satellite positioning system. The GPS receiver receives a positioning radio wave transmitted by a plurality of GPS satellites managed by the United States, and measures its own position. The GPS receiver may be a self-supporting type that measures its own position only by radio waves from GPS satellites, and includes a mobile phone device in the GPS receiver as an auxiliary device, and the location of the mobile phone base station using the mobile phone. It may be an A (assist) -GPS receiver that acquires information and acquires time information from a GPS satellite to determine its own position. The GPS receiver may be based on a system such as DGPS or RTK-GPS. Further, a receiver for another satellite positioning system that measures an own position using an artificial satellite other than the GPS satellite may be used.

  The direction detection unit 15 detects the direction (direction) in which the main body 1 is facing. For example, the direction detection unit 15 detects the geomagnetism with a three-axis magnetic sensor and outputs an angle with respect to the north or the direction in the east, west, north, and south directions. Electronic compass). Some GPS receivers are equipped with a plurality of antennas and can detect the direction based on the phase difference of radio waves. Therefore, the GPS receiver used as the position information acquisition unit 14 is also used as the direction detection unit 15. Also good.

  The measurement data storage unit 16 stores measurement data sent from the measurement unit 2. The position information storage unit 17 stores the position information of the main body 1 and the position information of each measurement unit 2, and stores distance information, azimuth information, and a position relationship diagram obtained by calculation. The measurement data storage unit 16 and the position information storage unit 17 are, for example, rewritable nonvolatile memories such as flash memory and hard disk, or volatile memories such as RAM (random access memory), and each uses a separate memory. Alternatively, the storage area of the same memory may be divided and used as appropriate.

  FIG. 3 shows a block diagram of the measurement unit 2. The measurement unit 2 includes a CPU 31 serving as a measurement unit control unit, a wireless communication unit 32, a position information acquisition unit 33, a measurement circuit 35, a memory 36, and a measurement sensor 38. Although not shown, the measurement unit 2 includes a battery as a power source for operation.

  The CPU 31 operates according to a program stored in the memory 36 and controls the operation of the measurement unit 2 in an integrated manner. The wireless communication unit 32 is the same as the wireless communication unit 11 of the main body 1.

  The position information acquisition unit 33 acquires position information indicating the own position of the measurement unit 2. The position information acquisition unit 33 may be the same as the position information acquisition unit 14 of the main body 1 or may be another unit that can acquire its own position. For example, the position information acquisition unit 14 of the main body 1 is an A-GPS receiver having a mobile phone function as an example of a GPS receiver, and the position information acquisition unit 33 of the measurement unit 2 is a self-supporting GPS receiver. Also good. The A-GPS receiver can be preferably used for the portable main body 1 because it has an advantage that the position information of its own position can be acquired in a short time when the operation is started. The positional information acquisition unit 14 of the main body 1 and the positional information acquisition unit 33 of the measurement unit 2 are positional relationship acquisition means for acquiring the positional relationship between the main body 1 and the measurement unit 2 in the present invention.

  The measurement circuit 35 amplifies the measurement value measured by the measurement sensor 38 to an appropriate level, performs analog / digital conversion, and outputs the result to the CPU 31. The measurement sensor 38 is, for example, a temperature sensor, a humidity sensor, a wind direction sensor, a pressure sensor, a flow rate sensor, an illuminance sensor, an electric current sensor that measures an electrical characteristic value, a strain sensor that measures a mechanical characteristic value, or the like. is there.

  The measurement unit 2 is configured such that the CPU 31 can acquire its own position from the position information acquisition unit 33 and transmit the own position from the wireless communication unit 32. In the measurement unit 2, the CPU 31 is configured to be able to transmit measurement data output from the measurement circuit 35 from the wireless communication unit 32.

  A specific operation of the measuring apparatus according to the present invention will be described.

  When the measurement apparatus is operating in the measurement mode, as shown in FIG. 1, each measurement unit 2A, 2B, 2C transmits the measured measurement data wirelessly, the main body 1 receives the measurement data, and the touch panel 12 Displayed on the (display unit 21) as a graph or numerical value.

  Further, the position information acquisition unit 14 of the main body 1 receives positioning radio waves from the GPS satellite 101 and detects position information indicating the position of the main body 1. Similarly, the position information acquisition unit 33 of each measurement unit 2A, 2B, 2C receives positioning radio waves from the GPS satellite 101 and detects position information indicating its own position. The position information detected by the position information acquisition units 14 and 33 is represented by latitude, longitude, and altitude. Note that altitude detection may be omitted depending on necessity. The position information acquisition units 14 and 33 may detect the position information constantly or periodically, during operation of the “position relation display mode” described below, or “position information request signal” It may be detected only when the position information is used as in the case of receiving "". When the main body 1 or the measurement unit 2 is operated by a battery, it is preferable that the position information acquisition units 14 and 33 detect the position information less frequently in order to reduce power consumption.

  When the operator operates the touch panel 12 (operation unit 22) and selects the “positional relationship display mode”, the CPU 10 of the main body 1 operates according to the flowchart shown in FIG. This operation will be described with reference to FIGS.

  In step S <b> 1, the CPU 10 acquires position information indicating its own position from the position information acquisition unit 14 and stores it in the position information storage unit 17. Subsequently, in step S <b> 2, the CPU 10 acquires position information indicating the position of each measurement unit 2 </ b> A, 2 </ b> B, 2 </ b> C by wireless communication and stores it in the position information storage unit 17. Specifically, in step S2, for example, the CPU 10 transmits a position information request signal for transmitting the position information of its own position from the wireless communication unit 11 to each of the measurement units 2A, 2B, and 2C. Each of the measurement units 2A, 2B, 2C receives the position information request signal by the wireless communication unit 32, and transmits the position information from the wireless communication unit 32 as a response. Each measurement unit 2 may transmit position information wirelessly at all times or regularly.

  Subsequently, in step S3, the CPU 10 operates as the distance / direction calculation unit 25, and converts the position information of the main body 1 stored in the position information storage unit 17 and the position information of each measurement unit 2A, 2B, 2C. Based on this, the distance between the main body 1 and each measurement unit 2A, 2B, 2C and the direction of each measurement unit 2A, 2B, 2C viewed from the main body 1 are calculated. The calculated distances and directions are stored in the position information storage unit 17. The distance may be a two-dimensional (planar) distance calculated using the latitude and longitude of the position information, or a three-dimensional distance using the latitude, longitude, and height of the position information. May be calculated. Furthermore, the distance / direction calculation unit 25 may calculate the distance between the measurement units 2A, 2B, and 2C.

  Subsequently, in step S4, the CPU 10 operates as the positional relationship diagram creating unit 26, and shows a diagram (positional relationship diagram 50 shown in FIG. 5) showing the positional relationship between the main body 1 and each measurement unit 2A, 2B, 2C. It is created and stored in the position information storage unit 17.

  Subsequently, in step S <b> 5, the CPU 10 operates as the drawing processing unit 27 to display a numerical value indicating a distance and a positional relationship diagram 50 on the touch panel 12.

  FIG. 5 shows a positional relationship diagram 50 and display examples of distance and direction.

  In the positional relationship diagram 50, as an example, a main body symbol P0 indicating the main body 1, a unit A symbol P1 indicating the measurement unit 2A, a unit B symbol P2 indicating the measurement unit 2B, and a unit C symbol P3 indicating the measurement unit 2C are arranged. FIG. Each symbol P0 to P3 may be a character, a symbol, a mark, a picture, or the like. In the figure, the characters “A”, “B”, and “C” are displayed in each of the symbols P1, P2, and P3. The characters in these symbols can be set and operated by operating the touch panel 12 of the operator. It is preferable that it can be changed.

  In the positional relationship diagram 50, it is preferable to arrange the symbols P0 to P3 so as to be proportional to the distance between the main body 1 and each of the measurement units 2A, 2B, and 2C and to be in the same direction with respect to the main body 1. In the positional relationship diagram 50, it is preferable to arrange the orientation mark N so that the orientation (azimuth) of the diagram can be understood. The direction can be acquired from the direction detection unit 15. When the azimuth mark N is not arranged, it may be shown and displayed so that the upper part of the positional relationship diagram 50 is in the north direction.

  Furthermore, as shown in the figure, it is preferable to display each distance information between the main body 1 and each of the measurement units 2A, 2B, 2C as numerical values (characters) in the positional relationship diagram 50. The distance information may be displayed in a portion other than the positional relationship diagram 50. In the figure, the distance information D1 between the main body 1 and the measurement unit 2A is “100 m”, the distance information D2 between the main body 1 and the measurement unit 2B is “80 m”, and the distance information D3 between the main body 1 and the measurement unit 2C is “160 m”. "Is displayed. In order to make it easy to understand the distance between the main body 1 and which measurement unit 2, as shown in the figure, even if a line (a line with an arrow) connecting the symbol P0 and each symbol P1, P2, P3 is displayed. Good.

  The distance information D1 to D3 is displayed as a two-dimensional (planar) distance or a three-dimensional distance, but the height difference (elevation difference) between the main body 1 and each measurement unit 2A, 2B, 2C is expressed numerically. The height difference information H shown may be displayed. Moreover, the figure shows a display example of height difference information H between the main body 1 and the measurement unit 2C. “H: +10 m” displayed as the height difference information H is an example showing that the measurement unit 2 </ b> C is 10 m higher than the main body 1. It is more preferable that all of the two-dimensional distance information, the height difference information H, and the three-dimensional distance information, or one or more arbitrary information can be displayed.

  Furthermore, you may display the distance information which shows the distance of each measurement unit 2A, 2B, 2C. In the figure, an example is shown in which “95 m” is displayed as the distance information K between the measurement unit 2B and the measurement unit 2C. Also in this case, height difference information indicating the height difference between the measurement units 2 may be displayed, or direction information of other measurement units 2 viewed from the measurement unit 2 may be displayed.

  Although not shown, the positional relationship diagram 50 may display information on the latitude, longitude, and altitude of the main body 1 and the measurement units 2A, 2B, and 2C. It is preferable that whether or not each information is displayed on the positional relationship diagram 50 and which information is displayed can be switched by the operator's operation on the touch panel 12. The drawing processing unit 27 may selectively display symbols P0 to P3 indicating the main body 1 and the measurement units 2A to 2C in the positional relationship diagram 50 by operating the touch panel 12.

  As shown in the figure, the drawing processing unit 27 displays various information such as distance information, azimuth information, altitude difference information, latitude, longitude, altitude, and the like on numerical values and alphabets in portions other than the positional relationship diagram 50 of the touch panel 12. Alternatively, it may be displayed in characters such as kanji. In the figure, an example showing distance information and direction information is shown. In the drawing, “unit A”, “unit B”, and “unit C” are displayed as unit name displays 51, 52, and 53 of the measurement units 2A, 2B, and 2C. The unit name displays 51 to 53 are preferably configured so that the operator can set / change an arbitrary name. When any one of the unit name displays 51 to 53 is selected by the operation of the touch panel 12 by the operator, the corresponding symbols P1 to P3 in the positional relationship diagram 50 are changed in color or displayed in brightness. The correspondence between the unit name displays 51 to 53 and the symbols P1 to P3 may be identified. Further, the display of such information outside the figure may be turned off so that the positional relationship diagram 50 can be displayed (full screen display) over the entire display area of the touch panel 12.

  Further, the drawing processing unit 27 can change the display magnification of the positional relationship diagram 50 and display it on the touch panel 12 so as to enlarge or reduce the positional relationship diagram 50 in accordance with the operation of the touch panel 12. Is preferred. The enlargement magnification or reduction magnification may be selected from a plurality of specific magnifications, or may be appropriately set to an arbitrary magnification using a numerical value or the like. Further, it is preferable that the drawing processing unit 27 can move the portion of the positional relationship diagram 50 that is enlarged and displayed on the touch panel 12 by operating the touch panel 12.

  When the main body 1 is a portable type, the orientation of the main body 1 changes depending on the orientation of the operator who has the main body 1. Therefore, when the orientation (azimuth) of the positional relationship diagram 50 displayed on the main body 1 is different from the actual location orientation (azimuth), the correspondence is difficult to understand. Therefore, it is preferable that the drawing processing unit 27 can display the position relationship diagram 50 on the touch panel 12 by rotating the position of the positional relationship diagram 50 to an arbitrary direction (angle) in accordance with the operation of the touch panel 12 by the operator.

  When the operator manually rotates the orientation of the positional relationship diagram 50 to match the orientation of the place, the position of each measurement unit 2 can be easily understood intuitively.

  More preferably, the orientation of the positional relationship diagram 50 is automatically displayed in accordance with the orientation of the main body 1.

  In order to automatically change and display the orientation of the positional relationship diagram 50 in accordance with the orientation of the main body 1, as shown in FIG. In step S4 (see FIG. 4), the positional relationship diagram creation unit 26 creates a positional relationship diagram 50 with orientation information, and the drawing processing unit 27 determines the orientation of the main body 1 by the orientation detection unit 15 in step S5. Detection is performed in real time, and the direction of the positional relationship diagram 50 is changed in real time in accordance with the detected direction and displayed on the touch panel 12.

  Further, by repeatedly executing steps S1 to S5 of the flowchart shown in FIG. 4, even if the positions of the main body 1 and each measurement unit 2 are moved, the positional relationship between the main body 1 and each measurement unit 2 can be determined in real time. The position can be measured and displayed on the touch panel 12. Also in this case, by displaying the positional relationship diagram 50 according to the orientation of the main body 1, even if the orientation of the main body 1 is changed, the positional relationship diagram 50 can be displayed in real time according to the actual orientation.

  FIG. 6 shows a display example in which the positional relationship diagram 50 is displayed according to the orientation of the main body 1. The CPU 10 (drawing processor 27) determines which direction is north from the direction detected by the orientation detector 15, and faces north in FIG. 6 (a), west in FIG. 6 (b), and in FIG. 6 (c). As shown in the east direction, even if the orientation of the main body 1 changes, the north position in the positional relationship diagram 50 is displayed in accordance with the actual north. Characters such as distance information, a symbol P0 indicating the main body 1 and the like may be rotated together with the positional relationship diagram 50 as shown in the figure, or displayed in the direction of the main body 1 for easy reading. You may let them.

  The main body 1 may be provided with a map storage unit (not shown) in which a map is stored, and the touch panel 12 may display the positional relationship diagram 50 on the map. The map corresponding to the positional relationship diagram 50 can be specified from the position information of the main body 1 and each measurement unit 2. The map storage unit may store, for example, maps in various parts of Japan or around the world in advance. When each measurement unit 2 is installed, the map of the place is stored in the main body 1 via, for example, a USB memory or a LAN. May be read and stored in the map storage unit. When the measurement unit 2 is placed in a room such as a warehouse, a greenhouse for plant cultivation, or a laboratory, the map may be an indoor layout diagram.

  Further, although the position of the measurement unit 2 is difficult to understand, the main body 1 simply does not display the positional relationship diagram 50, the positional relationship between the main body 1 and the measurement unit 2, and the positional relationship between the measurement units 2. As an example, only one type of information (characters) among the distance information, the azimuth information, and the height information may be displayed on the display unit 21, or each of the information acquired by the main body 1 and the measurement unit 2 may be used. Only information (characters) of latitude information and longitude information (latitude information, longitude information, and altitude information) that are position information may be displayed.

  Further, when the main body 1 is not a portable type but a fixed installation type in which the position is fixed, the main body 1 is not provided with the position information acquisition unit 14 that can automatically acquire its own position information such as a GPS receiver. In addition, position information such as latitude, longitude, and altitude indicating the own position may be input and set by manual operation of the touch panel 12 or the like. In this case, the touch panel 12 serves as a position information acquisition unit in the main body 1.

  Moreover, although the main body 1 and each measurement unit 2 demonstrated the example provided with the receiver for satellite positioning systems as the positional information acquisition parts 14 and 33, you may provide the positioning apparatus for other positioning systems.

  For example, the position information acquisition unit measures the strength of each radio wave transmitted from a plurality of radio stations on the earth whose positions are fixed, and measures the position based on the measured strengths of the plurality of radio waves. It may be a positioning device.

  Since the plurality of radio stations are fixed, their positions are known. The radio field intensity transmitted (output) from the radio station is known. The radio field intensity decreases as the distance from the radio station increases. The radio field intensity with respect to the distance from the radio station can be obtained by a theoretically known mathematical formula. When points on the map where the radio field strengths are equal are connected by lines, they become concentric circles centered on the radio station. Therefore, the position can be determined by measuring the radio field intensity from a radio station having at least three known positions and comparing it with the theoretically determined radio field intensity.

  If the theoretically determined radio field strength deviates greatly from the actual measurement due to the influence of surroundings such as buildings and mountains, measure the radio field intensity at each point on the map, centering on the radio station. A radio wave intensity map indicating the radio wave intensity at each point is created and used in advance. A radio wave intensity map is created for each radio station. The location information acquisition unit can measure the strength of each radio wave transmitted by a plurality of radio stations and compare the measured radio wave intensity with the radio wave intensity map of each radio station to determine its position. it can. The location information acquisition unit itself may store a radio wave intensity map in advance, or the location information acquisition unit may include an external communication interface unit such as a mobile phone or a wireless LAN. The radio wave intensity map may be downloaded from as needed. Alternatively, the location information acquisition unit transmits the measured radio field strength of each radio station from the external communication interface unit to the external device, and the external device compares the radio field strength of each radio station with the radio field strength map to identify the position. The specified position information may be returned to the position information acquisition unit.

  In addition, the main body is provided with the above positioning device for measuring the strength of each of the radio waves transmitted from a plurality of radio stations and measuring the position based on the measured strengths of the plurality of radio waves. , Wirelessly transmit the measured radio field strength of multiple radio stations to the main unit, and the positioning device of the main unit determines its own position (positioning) from the radio station radio field strength transmitted from the measurement unit. May be.

  Moreover, as a positional relationship acquisition means, for example, the main body includes a radar that transmits a survey wave (radar wave), receives a survey wave reflected by a reflection point, and measures the position of the reflection point. The unit may include a reflector that reflects the exploration wave.

  Such positional relationship acquisition means, for example, installs the main body on a ship and installs each measurement unit on a buoy floating on the sea, and wirelessly transmits measurement data such as seawater temperature, temperature, and weather measured by each measurement unit. Thus, it can be preferably applied to a measuring apparatus that transmits to the main body.

  The radar included in the main body emits the radio wave that becomes the exploration wave for all directions or a specific range of directions and scans the position of the measurement unit. As such a radar, for example, a known type that is mounted on a ship may be used. When the casing of the measurement unit reflects the exploration wave satisfactorily, the casing may also serve as a reflector. When displaying a map on the main body, the main body may be equipped with a positioning device such as a GPS receiver for positioning its own position together with the radar.

  1 is a main body, 2 · 2A · 2B · 2C are measurement units, 10 is a CPU, 11 is a wireless communication unit, 12 is a touch panel, 14 is a position information acquisition unit, 15 is a direction detection unit, 16 is a measurement data storage unit, 17 Is a position information storage unit, 21 is a display unit, 22 is an operation unit, 23 is an operation unit, 25 is a distance / direction calculation unit, 26 is a positional relationship diagram creation unit, 27 is a drawing processing unit, 31 is a CPU, and 32 is wireless Communication unit 33 Position information acquisition unit 35 Measurement circuit 36 Memory 38 Measurement sensor 50 Positional relationship diagram 51, 52, 53 Unit name display 101 GPS satellite D1, D2 D3 is distance information between the main body and the measurement unit, H is height difference information, K is distance information between the measurement units, N is an orientation mark, P0 is a main body symbol, P1 is a unit A symbol, P2 is a unit B symbol, P3 Is Uni Preparative C symbol, S1-S5 is the step.

Claims (11)

A measurement unit that measures measurement data, and a main body having a display unit each include a wireless communication unit, and is a measurement device that wirelessly transmits measurement data from the measurement unit to the main body,
The main body and the measurement unit comprise a positional relationship acquisition means for acquiring a positional relationship between the main body and the measurement unit,
The measurement apparatus characterized in that the main body can display the positional relationship acquired by the positional relationship acquisition means on the display unit.   The measurement according to claim 1, wherein the main body can display a distance to the measurement unit and a direction of the measurement unit on the display unit as the positional relationship between the main body and the measurement unit. apparatus.   The measurement apparatus according to claim 1, wherein the main body is capable of displaying a diagram showing the positional relationship between the main body and the measurement unit on the display unit.   The said main body is provided with the direction detection part which detects the direction, and it can display on the said display part by aligning the direction of the said figure with the direction of the said main body which this direction detection part detects. The measuring device described in 1.   5. The measuring apparatus according to claim 3, wherein the main body includes a map storage unit that stores a map, and can be displayed on the display unit by superimposing the figure on the map.   The measuring apparatus according to claim 1, wherein the main body can display a positional relationship between a plurality of the measuring units on the display unit. As the positional relationship acquisition means, the main body and the measurement unit each include a positional information acquisition unit that acquires positional information indicating its own position,
The measurement apparatus according to claim 1, wherein the measurement unit transmits the position information indicating the acquired own position wirelessly to the main body by the wireless communication unit.   The measurement apparatus according to claim 7, wherein the position information acquisition unit is a positioning apparatus that receives a radio wave for position measurement transmitted from an artificial satellite and measures its own position.   The position information acquisition unit is a positioning device that measures the strength of each radio wave transmitted from a plurality of ground radio stations whose positions are fixed, and measures the position based on the strength of the plurality of radio waves. The measuring apparatus according to claim 7. As the positional relationship acquisition means, the main body measures the strength of each radio wave transmitted from a plurality of ground radio stations whose positions are fixed, and measures its own position based on the strength of the plurality of radio waves. With a positioning device,
The measurement unit measures the intensity of each radio wave transmitted from the plurality of radio stations, transmits the measured radio wave intensity to the main body by the wireless communication unit, and the positioning device provided in the main body includes: The measuring apparatus according to claim 1, wherein the position of the measuring unit is determined based on the intensity of the radio wave measured by the measuring unit.   As the positional relationship acquisition means, the main body includes a radar that transmits an exploration wave and receives the exploration wave reflected by the measurement object and measures the position of the measurement object, and the measurement unit includes: The measuring apparatus according to claim 1, further comprising a reflector that reflects the exploration wave.

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