KR20010100705A - An Indoor Position Finding Apparatus and Method - Google Patents

Abstract

The present invention relates to an indoor position measuring apparatus and method, and in particular, a plurality of wheels mounted to the lower case of the device to move the device; A pulse encoder for generating a pulse each time the wheel moves; A control unit comprising a microprocessor and a power supply unit for supplying power to the pulse encoder and calculating a moving distance by receiving a pulse generated from the encoder; A power supply for supplying power to the power supply of the control device; A power charger for charging when the power supply is discharged; And a display means for visually checking the data calculated by the control device, and an inverter for converting DC power into AC power and a radio wave measuring device or CCD camera operated by receiving power from the inverter. The present invention provides an apparatus and method for obtaining a radio wave distribution position or a stereoscopic image in a room.

Description

Indoor Position Finding Apparatus and Method

The present invention relates to a device for measuring the distance and location of the room, the location-specific distribution of radio waves present in the room, by grasping the indoor location information that changes according to the movement of the measuring device, accurate distance measurement and The present invention relates to an indoor position measuring device for accurately measuring radio waves, and thus, planar and three-dimensional drawings of a room.

In general, when measuring the distance inside the building, and when creating a plan or three-dimensional drawing, the worker holding a tape measure or distance measuring instrument in his hand, measuring the distance from each point and then reducing the distance to a certain ratio Drawings have been drawn.

In addition, the efficiency of the electronic devices could be maximized only by determining the location of the electronic devices installed in the room according to the path and amount of radio waves present in the room.

Therefore, to measure the length, width, and height of the interior of a building to create an actual floor plan or three-dimensional drawing of a room, a person measures the distance using a tape measure or distance measuring equipment, calculates the width, and reduces the drawing. There was a problem that the work is slow and inaccurate because it must be drawn.

In addition, in order to measure the radio wave position in the room, a person directly holds a radio wave measuring device or a personal mobile phone in hand and measures the amount of radio waves at each point in the room. Afterwards, electronic equipment was installed in the areas that are less affected by radio waves.

However, when measuring indoor radio waves, a person must carry a measuring device while walking directly, so there is no precision on the location, and the data cannot be stored automatically until it is manually recorded on paper or a portable computer. Difficulty in drawing drawings and the problem of high time and manpower consumption.

The present invention is to accurately measure the distance and radio wave position, etc. by simply moving the indoor position measuring device in the room to solve the above-mentioned problems to improve the precision, maximize the efficiency of the work and lower the work cost do.

In order to achieve the above object, the present invention provides a device for measuring an indoor position, comprising: a plurality of wheels mounted on a case bottom of the device to move the device; A pulse encoder for generating a pulse each time the wheel moves; A power supply for supplying power to the pulse encoder and a control unit consisting of a microprocessor and a power supply unit for receiving the pulse generated by the encoder to calculate the moving distance to the data and the power supply unit of the control device Apparatus, a power charger for charging when the main power supply is discharged, and an indoor position measuring device comprising a display means for visually confirming the data calculated by the control device.

In addition, the present invention comprises the steps of initializing the data by turning on the power; Moving the initialized device in a desired direction; Receiving the number of revolutions of the rotating wheel as the device is moved, generating a pulse from a pulse encoder and outputting the pulse to the control device, and processing the pulse input to the control device by a microprocessor of the control device to obtain a data value And transmitting the obtained data to a display means in a serial communication method, and storing the transmitted data in a memory and displaying the data on a screen. to provide.

1 is a block diagram showing the configuration of an indoor position measuring apparatus according to the present invention.

Figure 2 is a flow chart showing a position measuring method of the microprocessor used in the indoor position measuring apparatus according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: wheel 2: pulse encoder

3: control device 4: power supply

5: power charging device 6: display means

7: inverter

8: Radio wave measuring device or CCD camera

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 1 shows an indoor position measuring apparatus according to the present invention, at least one or more wheels (1) that can be pushed to move the case in contact with the bottom of the bottom of the measuring device case (not shown) is It is installed, the pulse encoder (2) is connected to the wheel to detect the amount of movement generated by the movement of the wheel to convert it into a pulse. In addition, a control unit 3 including a microprocessor for converting a pulse generated by the pulse encoder 2 into position data and a power supply unit for supplying power to the encoder is connected. In addition, a power supply device 4 for supplying power to the power supply unit of the control device 3 is installed, and when the power supply device 4 is discharged and can no longer supply power, the power supply device 4 Power charger 5 for charging the is installed. In addition, the measuring device is provided with a display means 6 which allows the operator to visually check the data generated by the microprocessor of the control device 3. In this case, the display means 6 may be installed only in the case of the monitor separately, or may be used as a display means by connecting the microprocessor to the notebook.

In the above-described distance measuring method using the indoor position measuring device, the power is turned on to initialize data, and the initialized device is moved in a desired direction. At this time, by detecting the number of revolutions of the rotating wheel (1) as the device is moved to generate a pulse in the pulse encoder (2) and outputs it to the control device (3). The control device 3 then converts the input pulses into computer readable data values in the microprocessor. In this case, the present invention converts this to an ASCII value. By transmitting the obtained data to the display means in a serial communication manner, storing the transmitted data in the memory of the display means 6 and displaying it on the screen, the measurer can accurately obtain a position value to be measured.

FIG. 2 shows a procedure in which the microprocessor of the control device of the indoor position measuring device outputs position data. When the power is first applied, the system resets the internal operation. The system initial configuration and variable initialization by the reset initializes the environment settings and variables of the microprocessor and the storage device and checks the pulse output from the pulse encoder. At this time, if a pulse is input, it is checked whether the driving is the forward driving or the backward driving by the periodic period of the pulse. In the case of the forward driving, the pulse variable value is increased by 1, and in the case of the backward driving, the pulse variable value is decreased by 1. The above operation is performed every time a pulse is input. Every 10ms, the distance, speed and angle are calculated using this pulse variable value. After the calculation, the pulse variable value is reset to zero. In order to measure the angle accurately, the angle data may be measured using a direction sensor, Gyro.

If no pulse is output from the pulse encoder, 10ms is set to 0 and T_Flag1 is determined to be 10ms. If not, the process starts from determining whether the pulse is output from the encoder. If T_Flag1 is 10ms, the angle, speed, and distance are determined using pulse values. Calculate and determine whether T_Flag2 is 100ms (second). At this time, if T_Flag2 is not 100ms, the operation of determining whether the pulse is output is performed again. If T_Flag2 is 100ms, the speed, angle, and distance values are converted into ASCII codes. Here, T_Flag is a time flag, that is, an interrupt flag, T_Flag1 is set to 10 ms when the time reaches 10 ms, and T_Flag2 is set to 100 ms when 100 ms. It is informed that the time is up as described above, and these flag signals are immediately reset. Then, when the specified time is reached again, the above operation is repeated.

By repeating the above operation, the calculated distance, speed, and angle values are accumulated while repeating until 100 ms, and when 100 ms, the accumulated distance, speed, angle, and time data calculated by the microprocessor are converted into ASCII codes. Output by communication and reset accumulated distance, speed and angle to 0.

The microprocessor continuously repeats the operation as described above.

However, the above configuration can measure the location and distance of the room, but has no other function.

Accordingly, an inverter 7 for supplying AC power from the power supply device and an indoor electromagnetic wave measuring device or CCD camera 8 supplied with AC power by the inverter are provided on one side of the case.

When the electromagnetic wave measuring device is installed, electromagnetic waves can be measured at the measured position while the indoor position measuring device is moved, so that an electromagnetic wave map distributed in the room can be created. You can create a map.

If a radio wave measuring device is installed in the indoor position measuring device to measure the distance, and the radio wave measuring device transmits the measured radio wave data to the display means every time the position is moved, the wheel moves and according to the measured distance amount. The propagation value appears on the display, making it easy to create a propagation distribution diagram of the room.

The above-described indoor position measuring apparatus of the present invention makes it possible to easily measure indoor distance and position information of a building, etc. currently being used, and to measure indoor radio waves and indoor three-dimensionally by simply attaching an additional electromagnetic measuring device and a CCD camera. The drawings can be easily obtained.

Claims (6)

A device for measuring indoor location, A wheel mounted under the case of the device to move the device, A pulse encoder for generating a pulse each time the wheel moves, A control device comprising a power supply unit for supplying power to the pulse encoder and a microprocessor for receiving a pulse generated by the encoder and calculating a moving distance and data; A power supply device for supplying power to the power supply unit of the control device; A power charger for charging when the main power supply is discharged; Indoor positioning device including a display means for visually confirming the data calculated by the control device The method of claim 1, Indoor position measurement device comprising a radio wave measuring device for receiving the power from the power supply to measure the radio wave of the location, and transmits the measured radio wave information to the display means to check the radio wave of the location . The method according to claim 1 or 2, An indoor position measuring device, characterized in that to obtain a three-dimensional stereoscopic information of the room by mounting a CCD camera in place of the radio wave measuring device. Initializing data by turning on a power supply; Moving the initialized device in a desired direction; Receiving a rotational speed of a rotating wheel while the device is moved and generating a pulse from a pulse encoder and outputting the pulse to a control device; Processing pulses input to the control device in a microprocessor of the control device to obtain data values of speed, angle, and distance; Transmitting the obtained data to a display means in a serial communication manner; And storing the transmitted data in a memory and displaying the data on a screen. The method of claim 4, wherein The method for obtaining position data in the microprocessor includes analyzing a pulse input from a pulse encoder to determine whether the device is driving forward or backward; Increasing the pulse variable value by 1 when driving forward and decreasing the pulse variable value by 1 when driving backward; Determining whether T_Flag2 is 1 s by calculating an angle, a speed, and a distance with a pulse value when T_Flag1 is 10 ms; If the T_Flag2 is not 100ms, it is determined whether the pulse output again, and if the T_Flag2 is 100ms, converting the speed, angle, distance value to an ASCII code. The method of claim 4, wherein Measuring a radio wave distribution of each moving position from a radio wave measuring device each time the wheel is moved; Transmitting the measured radio wave distribution data together with the position data to a display means; And displaying a radio wave value measured according to the change of the measured distance value.