KR102089078B1 - Apparatus, method and system for wireless measurement - Google Patents

Abstract

An apparatus for wirelessly measuring a physical quantity appearing on a test body, comprising: a sensor that senses an analog signal corresponding to the physical quantity; A converter that converts analog signals to digital signals; An encoder for encoding the digital signal with an error correction code; And a communication unit that transmits the digital signal and the error correction code to the control center.

Description

Apparatus, method and system for wireless measurement

This disclosure relates to wireless metrology devices, methods and systems.

In the course of developing a defense guided weapon system, a test injecting a test object having mobility or flying property is continuously performed. In addition, in order to evaluate the performance of defense guided weapons systems, research on techniques for measuring physical quantities such as temperature, pressure, and acceleration appearing on test bodies such as guided weapons has been conducted.

As in the prior art, measurement may be performed by a wired measurement system that measures physical quantities through cables connected to the test body. However, in a wired measurement system, the cable connected to the test object may act as a physical disturbance to the behavior of the test object, and as the size of the test sample injection test increases, the size of the cable also increases, making it difficult to manage and noise. Due to this, there is a problem that the measurement signal may be distorted. Therefore, a technique capable of wirelessly measuring the physical quantity appearing on the test body is required.

In order to perform more precise measurement of the physical quantity appearing on the test body, a large amount of data with high resolution must be measured. On the other hand, in order to grasp the state of a test object in a guided weapon system and control the test object smoothly, there should be no delay in radio measurement. Accordingly, it is required that a large amount of high resolution data is processed at a high speed in a wireless measurement system.

In addition to the fact that wireless measurement requires high speed to avoid delays, it is required to secure stable and accurate measurement data in that the injection test of a specimen in a guided weapon system is a one-time test that is difficult to repeat or reproduce. .

Therefore, in a technique for wirelessly measuring a physical quantity appearing on a test body, there is a need for a technique capable of ensuring the stability and accuracy of wireless measurement data while performing wireless measurement at high speed.

Various embodiments are directed to providing wireless measurement devices, methods and systems. The technical problem to be achieved by the present disclosure is not limited to the technical problems as described above, and other technical problems may be inferred from the following embodiments.

As a means for solving the above technical problem, an apparatus for wirelessly measuring a physical quantity appearing on a test body according to an aspect of the present disclosure includes: a sensor for sensing an analog signal corresponding to the physical quantity; A converter that converts the analog signal to a digital signal; An encoder for encoding the digital signal with an error correction code; And a communication unit transmitting the digital signal and the error correction code to a control station.

A method for wirelessly measuring a physical quantity appearing on a test object according to another aspect of the present disclosure includes: sensing an analog signal corresponding to the physical quantity; Converting the analog signal to a digital signal; Encoding the digital signal with an error correction code; And transmitting the digital signal and the error correction code to a control station.

A system for wirelessly measuring a physical quantity appearing on a test body according to another aspect of the present disclosure includes: the test body; A sensor for detecting an analog signal corresponding to the physical quantity, a converter for converting the analog signal into a digital signal, an encoder for encoding the digital signal into an error correction code, and a communication unit for transmitting the digital signal and the error correction code to a control center Device comprising a; And the control station receiving the digital signal and the error correction code and decoding the error correction code.

Problems, such as a cable connected to a test object generated in a conventional wired measurement system, which can act as a physical disturbance to the behavior of the test object, can be solved by an apparatus, method, and system for wirelessly measuring the physical quantity appearing on the test object according to the present disclosure You can.

As the method of encoding digital signals by the encoder included in the wireless measurement device is improved, wireless measurement data can be processed at high speed, and the wireless measurement system can operate smoothly without delay.

As error correction coding is adopted as an encoding method, stability and accuracy of wireless measurement data can be ensured, and evaluation of a guided weapon system can be performed with only one test in a test that is difficult to repeat.

1 is a view showing a system for wirelessly measuring a physical quantity appearing in a test body according to some embodiments.
2 is a block diagram showing an apparatus for wirelessly measuring a physical quantity appearing on a test body according to some embodiments.
3 is a block diagram illustrating a configuration of an encoder included in a wireless measurement device according to some embodiments.
4 is a diagram illustrating a pseudo code for explaining an algorithm for implementing convolutional code performed in an encoder according to some embodiments.
5 is a block diagram showing the configuration of a control station included in a wireless measurement system according to some embodiments.
6 is a diagram for explaining a process of decoding a convolutional code performed by a decoder included in a control station according to some embodiments.
7 is a flowchart illustrating a method for wirelessly measuring a physical quantity appearing in a test body according to some embodiments.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. It goes without saying that the following description is only for the purpose of embodying the embodiments and does not limit or limit the scope of the invention. From the detailed description and examples, what can be easily inferred by experts in the art is interpreted as belonging to the scope of rights.

As used herein, terms such as 'consist of' or 'comprises' should not be construed to include all of the various components, or various steps described in the specification, and some components or some of them. It should be construed that they may not be included or may further include additional components or steps.

The present embodiments are related to a wireless measuring device, method, and system, and detailed descriptions of matters well known to those skilled in the art to which the following embodiments pertain will be omitted.

1 is a view showing a system for wirelessly measuring a physical quantity appearing in a test body according to some embodiments.

Referring to FIG. 1, a system 1 for wirelessly measuring a physical quantity may include a device 100 for wirelessly measuring a physical quantity, a control unit 200, and a test body 300. However, it can be understood by those having ordinary knowledge in the technical field related to this embodiment that other general-purpose components may be further included in the system 1 in addition to the components shown in FIG. 1.

The device 100 may be used to wirelessly measure the physical quantity appearing on the test body 300. The signal corresponding to the physical quantity may be detected, the detected signal may be processed, and the processed result may be transmitted to the control center 200.

The device 100 may be mounted on the test body 300. For example, when the test object 300 is a guided weapon, the device 100 may move along the moving test object 300 and perform an operation for wireless measurement.

The physical quantity appearing on the test body 300 may include at least one of pressure, thrust, temperature, acceleration, and stress. However, this is only an example, and a physical quantity that may appear on the test body 300 and that can be derived from a physical quantity that can be measured or a physical quantity that can be measured can also be included in a wireless measurement object according to the present disclosure. .

The physical quantity appearing on the specimen 300 may appear at various locations on the specimen 300. For example, when the test object 300 is a guided weapon, the physical quantity may be measured at a warhead, a combustion engine, or a launch pad of the test object 300. In addition, physical quantities appearing at all positions where the device 100 can be disposed inside the test body 300 may be an object of measurement.

The control center 200 may receive wireless measurement data transmitted from the device 100. The control center 200 may include a device for receiving and storing wireless measurement data, and may include a device for decoding the encoded wireless measurement data.

The control center 200 may be distributed over a wide area. Although the control center 200 shown in FIG. 1 is shown as having its components gathered in one place, the components constituting the control center 200 may be distributed and installed on the ground along a path through which the test body 300 moves.

The test body 300 may be subjected to wireless measurement according to the present disclosure. The physical quantity appearing on the test body 300 may be transferred to the control center 200 through processing by the device 100.

The test body 300 may be a projectile such as a guided weapon, a missile or a rocket that is launched or injected from the ground. However, the present invention is not limited thereto, and the test body 300 may be any other means of transportation by mounting the device 100 therein to be subjected to wireless measurement.

2 is a block diagram showing an apparatus for wirelessly measuring a physical quantity appearing on a test body according to some embodiments.

Referring to FIG. 2, the device 100 may include a sensor 110, a converter 120, an encoder 130, and a communication unit 140. However, other general-purpose components in addition to the components shown in FIG. 2 may be further included in the apparatus 100. For example, the device 100 may further include a battery for supplying power for the components included in the device 100 and a control unit for controlling the operation of the components included in the device 100.

The apparatus 100 may detect an analog signal corresponding to the physical quantity appearing on the test object 300, and may transmit a digital signal and an error correction code to the control center 200 through a predetermined process to be described later.

The sensor 110 may detect an analog signal corresponding to a physical quantity. The sensor 110 may be a pressure sensor, a temperature sensor, an acceleration sensor, or the like that senses an analog signal corresponding to a physical quantity that may correspond to pressure, temperature, and acceleration.

The sensor 110 may be disposed at various positions of the test object 300 to sense an analog signal corresponding to a physical quantity appearing on the test object 300. For example, when the test body 300 is an induction weapon, the sensor 110 may be located in a warhead, a combustion engine, and a fuel tank of the test body 300.

The converter 120 may convert an analog signal sensed by the sensor 110 into a digital signal. The converter 120 may be an analog to digital converter (ADC) that converts an analog signal to a digital signal.

The converter 120 may convert an analog signal into a digital signal composed of 32 bits. The converter 120 may generate a 32-bit digital signal and transmit the generated digital signal to the encoder 130 and the communication unit 140.

Specifically, the converter 120 may convert an analog signal into 24-bit data corresponding to the analog signal, and combine 32-bit data with 8-bit dummy bits to generate a 32-bit digital signal. The 8-bit dummy bit can be used to determine the sign of the digital signal. For example, the dummy bit may be set to 0xFF (11111111 ₍₂₎ ) when the digital signal is positive, and the dummy bit may be set to 0x00 when the digital signal is negative.

Compared to ADCs that convert analog signals to 16-bits in the past, as the converter 120 converts analog signals to 24-bits, the resolution of digital signals can be increased, and more precise digital signals can be provided, thereby providing precise wireless measurement. This can be done.

In the present disclosure, the converter 120 is described as converting an analog signal into a 32-bit digital signal having a 24-bit resolution, but this should be understood as a preferred example, and the number and resolution of bits constituting the digital signal are partially modified. It can also be implemented in the form. For example, the digital signal generated by the converter 120 may be composed of 32 bits having 22 bits of resolution and 10 bits of dummy bits.

In general, a central processing unit (CPU), a data bus, a computing unit, etc. in the CPU use 32-bit or 64-bit as a basic unit of data processing, so that the converter 120 converts an analog signal to 24-bit data. It can be understood as converting to and adding a 8-bit dummy bit to generate a 32-bit digital signal.

In the 32-bit digital signal, the upper 24 bits may be data converted from an analog signal, and the lower 8 bits may be dummy bits. However, according to an implementation method, a place where 8-bit dummy bits are located in a 32-bit digital signal may be changed.

The encoder 130 may encode the digital signal with an error correction code. The encoder 130 may generate a 32-bit error correction code from the 32-bit digital signal transmitted from the converter 120 and transmit the error correction code to the communication unit 140.

The error correction code generated by the encoder 130 may be generated by a forward error correction (FEC) method. The error correction code may be generated by adding a surplus code to data to be transmitted according to FEC and modulating it.

The encoder 130 may encode a digital signal with an error correction code using a convolutional coding method. Specifically, the encoder 130 may encode the digital signal into a convolutional code based on dummy bits included in the digital signal. The convolutional coding method is a method that is fast in coding speed, has excellent error correction capability, and is actually used in the IEEE 802.11a standard.

The encoding of the convolutional coding method performed by the encoder 130 may be implemented by performing bit shifting on a digital signal using dummy bits and performing exclusive OR on the shifted results. have. The coding of the convolutional coding method performed by the specific encoder 130 may be described with reference to FIG. 3.

3 is a block diagram illustrating a configuration of an encoder included in a wireless measurement device according to some embodiments.

Referring to FIG. 3, the encoder 130 may include at least one register 132 and a logic circuit 134. The at least one register 132 can perform bit shifting on a digital signal including dummy bits, and the logic circuit 134 is an exclusive OR for at least one result shifted by the at least one register 132. (XOR, exclusive or) can be performed.

The encoder 130 may further include a dummy modulator 131 and a combinational logic generator 133 in addition to the at least one register 132 and the logic circuit 134. The digital signal transmitted to the encoder 130 may be encoded with an error correction code through each component.

The dummy modulator 131 may receive a 32-bit digital signal including 8-bit dummy bits and modulate 8-bit dummy bits included in the digital signal. Specifically, the dummy modulator 131 may modulate the 8-bit dummy bit to 0x00.

The dummy modulator 131 may include logic gates. For example, the dummy modulator 131 may be a 32 bit AND gate that performs a bitwise operation.

When the lower 8 bits of the 32-bit digital signal are dummy bits, the dummy modulator 131 may perform an AND operation of the digital signal and 0xFFFFFF00. Data converted from the analog signal corresponding to the upper 24 bits can be preserved by AND operation with 0xFFFFFF (111111111111111111111111 ₍₂₎ ), and the dummy bit corresponding to the lower 8 bits is 0x00 (00000000 ₍₂₎ ). The value can be modulated to 0x00 by the AND operation.

As the dummy modulator 131 modulates the dummy bit of the digital signal, the encoder 130 may encode the digital signal using a convolutional coding method based on the dummy bit.

The at least one register 132 may perform bit shifting on a digital signal in which dummy bits are modulated. Since the modulated digital signal has eight bits of dummy bits set to zero, at least one register 132 can shift the modulated digital signal by one to eight bits.

Each of the at least one register 132 may be a storage device capable of simultaneously processing 32-bit data. However, the present invention is not limited thereto, and each of the at least one register 132 may be implemented to simultaneously process 64-bit data according to the processing capacity of the central processing unit.

Since the digital signal processed by the device 100 according to the present disclosure has 8-bit dummy bits, at least one register 132 may be 8 registers. Specifically, the at least one register 132 may include eight registers, from one bit shift register to eight bit shift register, and the eight registers may be configured in parallel. However, when the number of bits of the dummy bit included in the digital signal is changed, the number of registers included in the at least one register 132 may be changed accordingly.

The encoding of the convolutional coding method performed by the encoder 130 may have a constraint. The value of the constraint length may indicate the complexity of the process in which the convolutional code is generated. In general, the larger the constraint value, the better the error correction performance of the convolutional code.

When at least one register 132 included in the encoder 130 is composed of eight registers, the value of the constraint length of the convolutional code generated by the encoder 130 may be 9. Accordingly, the encoder 130 may generate a convolutional code from 9 data corresponding to the value of the constraint length, that is, data that has not passed through a register and 8 results that have passed through each register. Is characterized in that the speed of implementing the error correction code can be significantly improved compared to the conventional method. The significantly improved code implementation speed compared to the conventional method is due to the fact that the encoder 130 generates the convolutional code in a different way from the conventional method. Specifically, the speed in which bit shifting is performed is rapidly improved compared to a conventional method of performing bit shifting by bit by bit without dummy bits, in that the encoder 130 performs multiple bit shifting simultaneously using dummy bits. You can.

For example, in the conventional method of encoding 32-bit data with a convolutional code, 32 bits are composed of all meaningful data without dummy bits, and accordingly, 32 times are required to perform bit shifting on 32-bit data. It takes a clock. On the other hand, since the object to which the at least one register 132 performs bit shifting is a digital signal including dummy bits, bit shifting for all 32 bits can be performed at once through one system clock. Accordingly, the speed at which the bit shifting is performed can be dramatically increased, and wireless measurement can be performed at a high speed as a whole.

The combinational logic generator 133 may select at least a portion of at least one result shifted by the at least one register 132. For example, in the encoder 130 having a constraint value of 9, the combinational logic generator 133 may select up to 9 of the results generated by the at least one register 132. The products selected by the combinational logic generation unit 133 may constitute combinational logic. The combinational logic generation unit 133 may be implemented in a configuration having a function of selecting a provided signal. For example, the combinational logic generator 133 may be composed of a plurality of switches, and some of at least one result shifted according to opening and closing of each of the switches may be selected. The switch may be a metal oxide semiconductor field effect transistor (MOSFET) operating according to a voltage applied to the gate terminal. However, the switch is only an example, and the combination logic generator 133 may be configured with other elements having a function of selecting a signal.

The logic circuit 134 may perform an exclusive OR operation on the combination logic selected by the combination logic generation unit 133. When the constraint length has a value of 9, the logic circuit 134 is exclusive to the combinational logic composed of data selected from one unshifted digital signal and eight shifted digital signals by the combinational logic generation unit 133. You can perform the OR operation. For example, the logic circuit 134 may perform an exclusive OR operation on 7 data selected from 9 data.

The logic circuit 134 may be implemented in a configuration capable of performing exclusive OR operation. For example, the logic circuit 134 may be implemented as a complementary metal oxide semiconductor (CMOS) circuit capable of performing XOR operations.

The result of the exclusive OR operation performed in the logic circuit 134 may be an error correction code. The error correction code may be a convolutional code encoded by a convolutional coding method.

As the digital signal is encoded with an error correction code by the encoder 130, correction may be possible even when an error due to noise occurs in the digital signal. Therefore, accuracy and stability in wireless measurement according to the present disclosure can be secured.

 Although the structure and function of a single encoder 130 operating in the device 100 are described in FIG. 2, the device 100 may include two or more encoders including the encoder 130. The apparatus 100 may generate error correction codes encoded in different ways for one digital signal by including a plurality of encoders configured in parallel. For example, the device 100 may include three encoders. The three encoders can code the same digital signal into three error correction codes by three different combinatorial logics.

The device 100 may include a plurality of encoders, and the same digital signal may be encoded with a plurality of different error correction codes, and then a plurality of different error correction codes may be restored to a digital signal through a decoding process. When the apparatus 100 includes a plurality of encoders, performance of error correction may be improved compared to a case where the number of encoders is smaller. Therefore, the stability and reliability of the radio measurement which has been further increased can be provided.

4 is a diagram illustrating a pseudo code for explaining an algorithm for implementing convolutional code performed in an encoder according to some embodiments.

Referring to FIG. 4, with respect to an encoding method performed by the encoder 130 described with reference to FIG. 3, pseudo codes for a process in which 171 convolutional codes and 133 convolutional codes, which are IEEE 802.11a standards, are implemented It is shown.

The input a may be 32-bit data including 8-bit dummy bits.

b may be a result of a and 0xFFFFFF00 being ANDed so that all 8-bit dummy bits are set to 0.

output171 is bit unshifted, 1 bit shifted (b >> 1), 2 bit shifted (b >> 2), 3 bit shifted (b >> 3), and 6 bit shifted (b >> 6) ).

The output171 may be generated from a combination logic in which results obtained by shifting 0, 1, 2, 3, and 6 bits are selected. Shifting of 0, 1, 2, 3, and 6 bits can be expressed as 1111001. By separating 1111001 by 1/111/001 and converting binary to decimal, 171 convolutional code can be implemented in that it corresponds to 171.

As in output171, output133 can also be generated by XOR operation after shifting 0, 2, 3, 5, or 6 bits.

The 171 convolutional code and the 133 convolutional code shown in FIG. 4 may have a constraint value of 7 in that they constitute combinational logic among 0, 1, 2, 3, 4, 5, and 6 bit shifting products. .

Referring back to FIG. 2, the communication unit 140 may receive a digital signal from the converter 120 and receive an error correction code from the encoder 130. The communication unit 140 may transmit a digital signal and an error correction code to the control center 200.

The communication unit 140 may include one or more components that allow the device 100 to communicate with the control center 200. The communication unit 140 may include a short-range communication unit, a mobile communication unit, and the like.

The communication unit 140 may transmit a digital signal and an error correction code to the control center 200 using a wireless local area network (WLAN) method. Specifically, the communication unit 140 may communicate with the control center 200 through a Wi-Fi network.

However, the present invention is not limited thereto, and the communication unit 140 includes Bluetooth, Bluetooth Low Energy (BLE), Near Field Communication, Zigbee, Infrared Data Association (IrDA), WFD ( Wi-Fi Direct), UWB (ultra wideband), Ant +, and telemetry (Telemetry) can communicate with the control station 200 in at least one of the following ways.

The communication unit 140 may vary a method of transmitting a digital signal to the control center 200 and a method of transmitting an error correction code to the control center 200. For example, the communication unit 140 may transmit a digital signal in a transmission control protocol (TCP) method and an error correction code in a user datagram protocol (UDP) method.

The TCP method is a highly reliable communication method and has a 1: 1 connection method. The TCP method may include a function of performing a check on whether data has been properly transmitted between a transmitting side and a receiving side. The wireless measurement system may be able to acquire error-free data through TCP-type communication.

However, due to the nature of radio measurement with respect to the test object 300, there may be a risk that transmission of radio measurement data may be delayed because the connection between the transmission side and the reception side is interrupted due to an obstacle, rotation of the test object 300, or the like. Therefore, as a method to prepare for the risk that transmission may be delayed due to connection interruption, the communication unit 140 may transmit an error correction code to the control center 200 in a UDP method in addition to the TCP type digital signal transmission.

The UDP method is a communication method that unilaterally transmits data without verifying the data. Since connection for error verification is not involved, one-to-many communication may be possible, and fast transmission is possible, which is suitable for real-time transmission. . However, since the UDP method transmits data without error control, additional error correction may be required.

The communication unit 140 may transmit the digital signal to the control center 200 in a stable TCP manner with a low risk of error occurrence, and the error correction code encoded from the digital signal in the UDP method requiring control of the error 200 Can be transferred to.

As the method in which the communication unit 140 transmits the digital signal converted from the analog signal to the control center 200 is dualized, more stable and reliable wireless measurement data may be provided. In addition, as the UDP method is employed in addition to the TCP method, wireless measurement can be performed in real time more quickly. Meanwhile, additional error control required in the UDP method may be implemented by an encoder 130 that encodes a digital signal with an error correction code.

5 is a block diagram showing the configuration of a control station included in a wireless measurement system according to some embodiments.

Referring to FIG. 5, the control center 200 may include a main storage device 210, at least one auxiliary storage device 220, and a decoder 230. However, other general-purpose components other than the components illustrated in FIG. 5 may be further included in the control center 200.

The main storage device 210 can receive a digital signal from the device 100. The main storage device 210 may receive a digital signal in a TCP manner. Since the communication of the TCP method is performed 1: 1, the control center 200 may include a single number of main storage devices 210.

The at least one auxiliary storage device 220 may receive an error correction code from the device 100. At least one auxiliary storage device 220 may receive an error correction code in a UDP manner. In the UDP type communication, at least one auxiliary storage device 220 included in the control center 200 may be composed of two or more auxiliary storage devices in that one-to-many communication is possible.

The main storage device 210 may be located on the ground near the place where the injection test of the specimen 300 is started. As the main storage device 210 is located near the test start position of the test object 300, connection according to the TCP method may be easy. The at least one auxiliary storage device 220 may be evenly distributed on the ground of a path through which the test object 300 moves. As the test object 300 moves, each of the at least one auxiliary storage device 220 may communicate with the device 100 mounted on the test object 300 in a UDP manner.

The decoder 230 may receive and decode an error correction code received by the at least one auxiliary storage device 220. Decoding of the error correction code performed in the specific decoder 230 may be described with reference to FIG. 6.

6 is a diagram for explaining a process of decoding a convolutional code performed by a decoder included in a control station according to some embodiments.

Referring to FIG. 6, a process of decoding three error correction codes encoded according to three different combinatorial logics for the same digital signal into a digital signal is illustrated. The number of three is exemplary, and when the apparatus 100 includes a plurality of encoders, the number may be changed according to the number of the plurality of encoders.

The decoder 230 may decode the error correction code based on the Viterbi algorithm. The decoder 230 may take one bit at the same position from the three error correction codes illustrated in FIG. 6 and generate a result bit by the Viterbi algorithm. When 32 operations are performed, decoding of a 32-bit digital signal may be completed.

As in the present disclosure, when a plurality of error correction codes are encoded from the same digital signal, and when decoding from a plurality of error correction codes back to the same digital signal, the digital signal is encoded into a single number of error correction codes, and then decoded again. In comparison, wireless measurement data may have more improved reliability.

7 is a flowchart illustrating a method for wirelessly measuring a physical quantity appearing in a test body according to some embodiments.

Referring to FIG. 7, a method for wirelessly measuring a physical quantity appearing on a test object is composed of steps processed in time series in the apparatus 100 illustrated in FIG. 2. Therefore, even if omitted below, the contents described above with respect to the apparatus 100 of FIG. 2 can also be applied to a method for wirelessly measuring the physical quantity shown in the test body of FIG. 7.

In step s710, the device 100 may detect an analog signal corresponding to the physical quantity.

In step s720, the device 100 may convert an analog signal to a digital signal.

In step s730, the device 100 may encode the digital signal with an error correction code.

In step s430, the device 100 may transmit a digital signal and an error correction code to the control center 200.

On the other hand, a method for wirelessly measuring a physical quantity appearing on a test object may be recorded in a computer-readable recording medium in which one or more programs including instructions for executing the method are recorded.

Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs, DVDs, and floptical disks. Hardware devices specifically configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like, may be included. Examples of the program instructions may include high-level language code that can be executed by a computer using an interpreter, etc., as well as machine language codes made by a compiler.

Although the embodiments have been described in detail above, the scope of the present invention is not limited to this, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the following claims are also provided. Belongs to

1: Wireless measurement system
100: wireless measuring device
110: sensor
120: converter
130: encoder
140: communication unit

Claims (13)

In the apparatus for wirelessly measuring the physical quantity appearing on the test body,
A sensor detecting an analog signal corresponding to the physical quantity;
A converter for converting the analog signal into a 32-bit digital signal;
An encoder for encoding the digital signal with a 32-bit error correction code; And
And a communication unit transmitting the digital signal and the error correction code to a control center,
The converter,
Converting the analog signal into 24-bit data corresponding to the analog signal, and combining the converted data with 8-bit dummy bits to generate the digital signal,
The encoder,
An apparatus for encoding the digital signal into the error correction code by a convolutional coding method based on the dummy bit included in the digital signal. delete According to claim 1,
The encoder,
At least one register for performing bit shifting on the digital signal; And
And a logic circuit that performs an exclusive OR on at least one result shifted by the at least one register,
And the at least one register processes 32 bits of data. According to claim 1,
The device of the convolutional coding scheme has a value of 9. delete According to claim 1,
The control center,
A main storage device for receiving the digital signal;
A plurality of auxiliary storage devices for receiving the error correction code,
The communication unit,
And transmit the digital signal to the main storage device in a transmission control protocol (TCP) manner, and transmit the error correction code to the plurality of auxiliary storage devices in a user datagram protocol (UDP) manner. According to claim 1,
The physical quantity comprises at least one of pressure, thrust, temperature, acceleration and stress. In the method for wirelessly measuring the physical quantity appearing in the test body,
Sensing an analog signal corresponding to the physical quantity;
Converting the analog signal into a 32-bit digital signal;
Encoding the digital signal with a 32-bit error correction code; And
And transmitting the digital signal and the error correction code to a control station,
The step of converting,
Converting the analog signal into 24-bit data corresponding to the analog signal, and combining the converted data with 8-bit dummy bits to generate the digital signal,
The encoding step,
A method of encoding the digital signal with the error correction code by a convolutional coding method based on dummy bits included in the digital signal. A computer-readable recording medium having a program for implementing a method for wirelessly measuring a physical quantity appearing on a test object, comprising:
The above method,
Sensing an analog signal corresponding to the physical quantity;
Converting the analog signal into a 32-bit digital signal;
Encoding the digital signal with a 32-bit error correction code; And
And transmitting the digital signal and the error correction code to a control station,
The step of converting,
Converting the analog signal into 24-bit data corresponding to the analog signal, and combining the converted data with 8-bit dummy bits to generate the digital signal,
The encoding step,
A recording medium for encoding the digital signal with the error correction code by a convolutional coding method based on dummy bits included in the digital signal. In the system for wirelessly measuring the physical quantity appearing in the test body,
The test body;
Sensor for detecting an analog signal corresponding to the physical quantity,
A converter that converts the analog signal into a 32-bit digital signal,
An encoder for encoding the digital signal with a 32-bit error correction code, and
A device including a communication unit transmitting the digital signal and the error correction code to a control station; And
Receiving the digital signal and the error correction code,
And the controller for decoding the error correction code,
The converter,
Converting the analog signal into 24-bit data corresponding to the analog signal, and combining the converted data with 8-bit dummy bits to generate the digital signal,
The encoder,
A system for encoding the digital signal with the error correction code by a convolutional coding method based on the dummy bit included in the digital signal. The method of claim 10,
The control center,
A main storage device for receiving the digital signal;
At least one auxiliary storage device for receiving the error correction code; And
And a decoder to decode the error correction code. The method of claim 11,
The main storage device,
The digital signal is received by the TCP method,
The at least one auxiliary storage device,
A system for receiving the error correction code in a UDP manner. The method of claim 11,
The decoder,
A system for decoding the error correction code based on a Viterbi algorithm.

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