KR20200023681A - Apparatus, method and system for wireless measurement - Google Patents

Abstract

Provided is a device for wirelessly measuring physical quantities appearing on a test body, which comprises: a sensor detecting an analog signal corresponding to a physical quantity; a converter converting the analog signal into a digital signal; an encoder encoding the digital signal to an error correction code; and a communication unit transmitting the digital signal and the error correction code to a control center.

Description

Apparatus, method and system for wireless measurement

FIELD The present disclosure relates to wireless metrology devices, methods, and systems.

In the process of developing a defense guidance weapon system and the like, a test for injecting a test object having mobility or flight is continuously performed. In addition, in order to evaluate the performance of defense guidance systems, researches on techniques for measuring physical quantities such as temperature, pressure, and acceleration appearing in test specimens such as guidance weapons have been conducted.

As in the related art, measurement by a wired measurement system for measuring a physical quantity through a cable or the like connected to a test body can be performed. However, in the wired measurement system, the cable connected to the test specimen may act as a physical disturbance to the behavior of the test specimen, and as the scale of the specimen injection test increases, the size of the cable increases, which makes it difficult to manage and the noise of the cable. There is a problem such that the measurement signal may be distorted. Therefore, a technique for wirelessly measuring the physical quantity appearing in the test object is required.

In order to perform more accurate measurement of the physical quantity appearing in the specimen, a large amount of data with high resolution must be measured. On the other hand, in order to detect the state of the test specimen in the guided weapon system and the like and to smoothly control the test specimen, no delay of radio measurement should occur. Therefore, in radio measuring systems, a large amount of high resolution data is required to be processed at a high speed.

In addition to the fact that wireless measurement requires high speed so that delay does not occur, wireless measurement requires stable and accurate measurement data in that test specimen injection in a guided weapon system is a one-time test that is difficult to repeat or reproduce. .

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

Various embodiments provide a wireless metrology device, method and system. 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 in the test body according to an aspect of the present disclosure, a sensor for sensing 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 transmitting the digital signal and the error correction code to a control station.

According to another aspect of the present disclosure, a method for wirelessly measuring a physical quantity appearing in a test body includes: sensing an analog signal corresponding to the physical quantity; Converting the analog signal into 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.

According to another aspect of the present disclosure, a system for wirelessly measuring a physical quantity appearing in a test body 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 station Apparatus comprising a; And the control station that receives the digital signal and the error correction code and decodes the error correction code.

The apparatus, method and system for wirelessly measuring the physical quantity appearing in the test specimen according to the present disclosure may solve problems such as the cable connected to the test specimen generated in the conventional wired measurement system may act as a physical disturbance to the behavior of the test specimen. Can be.

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

As error correction coding is adopted as the coding scheme, stability and accuracy of radiometric data can be ensured, and in a test that is difficult to repeat, evaluation of the guided weapon system or the like can be performed with only one test.

1 is a diagram illustrating a system for wirelessly measuring a physical quantity appearing in a test body according to some embodiments.
2 is a block diagram illustrating an apparatus for wirelessly measuring a physical quantity appearing in a test body according to some embodiments.
3 is a block diagram illustrating a configuration of an encoder included in the wireless measurement apparatus according to some embodiments.
4 is a diagram illustrating a pseudo code for describing an algorithm for implementing a convolutional code performed in an encoder, according to some embodiments.
5 is a block diagram illustrating a configuration of a control station included in a wireless measurement system according to some embodiments.
FIG. 6 is a diagram for describing a process of decoding a convolutional code performed by a decoder included in a control center 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, only exemplary embodiments will be described in detail with reference to the accompanying drawings. It is to be understood that the following description is only intended to embody the embodiments, but not to limit or limit the scope of the invention. From the detailed description and examples, what can be easily inferred by those skilled in the art is construed as falling within the scope of the right.

As used herein, the term “consisting of” or “comprising” should not be construed as including all of the various components or steps described in the specification, and some or some of them may be included. Should not be included or should be construed to further include additional components or steps.

The embodiments of the present disclosure relate to a wireless metrology device, method, and system, and thus, detailed descriptions of the matters well known to those skilled in the art will be omitted.

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

Referring to FIG. 1, the system 1 for wirelessly measuring a physical quantity may include an apparatus 100, a controller 200, and a test body 300 for wirelessly measuring a physical quantity. However, it can be understood by those skilled in the art that other general-purpose components other than the components shown in FIG. 1 may be further included in the system 1.

The device 100 may be used to wirelessly measure the physical quantity appearing in the test object 300. A signal corresponding to a physical quantity may be detected, the detected signal may be processed, and the processed result may be transmitted to the control station 200.

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

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

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

The control station 200 may receive the radio measurement data transmitted from the device 100. The control station 200 may include an apparatus for receiving and storing radiometric data, and may include an apparatus for decoding the encoded radiometric data.

The control station 200 may be divided into a wide area. Although the control station 200 illustrated in FIG. 1 is illustrated as having the components gathered in one place, the components forming the control station 200 may be distributed and installed along the path along which the test specimen 300 moves.

The test body 300 may be a target of wireless measurement according to the present disclosure. The physical quantity appearing in the test body 300 may be transferred to the control station 200 through the processing by the apparatus 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 specimen 300 may be any other moving means that may be the object of radio measurement by mounting the device 100 therein.

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

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

The apparatus 100 may detect an analog signal corresponding to a physical quantity appearing on the test object 300, and transmit a digital signal and an error correction code to the control station 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 detects 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 specimen 300 to detect an analog signal corresponding to a physical quantity appearing in the test specimen 300. For example, when the test specimen 300 is an induction weapon, the sensor 110 may be located in a warhead, a combustion engine, a fuel tank, or the like of the test specimen 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) for converting an analog signal into 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 transfer the generated digital signal to the encoder 130 and the communication unit 140.

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

As the converter 120 converts the analog signal into 24 bits, the resolution of the digital signal may be increased, and a more precise digital signal may be provided, compared to an ADC which converts the analog signal into 16 bits. This can be done.

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

In the general-purpose central processing unit (CPU), the data bus inside the CPU, the computing unit, etc., 32-bit or 64-bit is the basic unit of data processing. It can be understood that a digital signal of 32 bits is generated by converting to and adding 8 bits of dummy bits thereto.

The 32-bit digital signal may be upper 24 bits converted from an analog signal, and the lower 8 bits may be dummy bits. However, the position where the 8-bit dummy bit is located in the 32-bit digital signal may be changed according to an implementation scheme.

The encoder 130 may encode the digital signal into 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 the digital signal into an error correction code by a convolutional coding scheme. In detail, the encoder 130 may encode the digital signal into a convolutional code based on dummy bits included in the digital signal. The convolutional coding scheme has a high coding speed, excellent error correction, and is actually used in the IEEE 802.11a standard.

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

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

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

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 configuration.

The dummy modulator 131 may receive a 32-bit digital signal including an 8-bit dummy bit and may modulate the 8-bit dummy bit included in the digital signal. In detail, the dummy modulator 131 may modulate the 8-bit dummy bit into 0x00.

The dummy modulator 131 may be composed of 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 are dummy bits in the 32 bit digital signal, the dummy modulator 131 may perform an AND operation of the digital signal and 0xFFFFFF00. The 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 may be modulated to 0x00 by an AND operation.

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

The at least one register 132 may perform bit shifting on the digital signal in which the dummy bit is modulated. Since the modulated digital signal has dummy bits set to zero of eight bits, at least one register 132 may 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 processing 32 bits of data at the same time. However, the present disclosure 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 in the apparatus 100 according to the present disclosure has 8 bits of dummy bits, at least one register 132 may be 8 registers. In detail, the at least one register 132 may include eight registers from one bit shift register to eight bit shift shift registers, 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 scheme performed by the encoder 130 may have a constraint. The value of the constraint may indicate the complexity of the generation of the convolutional code. In general, the larger the value of the constraint, the better the error correction performance of the convolutional code.

When at least one register 132 included in the encoder 130 includes 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 nine data corresponding to the value of the constraint length, that is, data not passed through a register and eight results through each register. Is characterized in that the speed of implementing the error correction code can be significantly improved compared to the conventional method. Significantly improved code implementation speed compared to the conventional approach is due to the fact that the encoder 130 generates the convolutional code in a different way than the conventional way. In detail, since the encoder 130 simultaneously performs a plurality of bit shifting by using the dummy bit, the speed at which the bit shifting is performed may be drastically improved as compared with the conventional method of performing bit shifting by one bit without the dummy bit. Can be.

For example, in the conventional method of encoding 32-bit data into a convolutional code, 32 bits are composed of all meaningful data without dummy bits, and accordingly, 32 times of systems are required to perform bit shifting on the 32-bit data. It takes a clock. In contrast, since the target to which the at least one register 132 performs bit shifting is a digital signal including dummy bits, bit shifting of all 32 bits can be performed at once through one system clock. Thus, the speed at which the bit shifting is performed can rise dramatically, and the radio metrology can be performed at high speed as a whole.

The combinational logic generator 133 may select at least some of the at least one result shifted by the at least one register 132. For example, in the encoder 130 having a constraint of 9, the combinational logic generator 133 may select up to 9 results from the results generated by the at least one register 132. The products selected by the combinational logic generation unit 133 may constitute a 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 generation unit 133 may be composed of a plurality of switches, and some of at least one resultant shifted according to opening and closing of each switch 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 combinational 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 combinational logic selected by the combinational logic generator 133. When the constraint field 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 generator 133. The OR operation can be performed. For example, the logic circuit 134 may perform an exclusive OR operation on seven data selected from nine data.

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

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 in a convolutional coding scheme.

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

 Although the structure and function of a single encoder 130 operating in the device 100 has been 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 that are encoded in different ways for one digital signal by including a plurality of encoders configured in parallel. For example, the apparatus 100 may include three encoders. Three encoders may encode the same digital signal into three error correction codes by three different combinational logic.

The apparatus 100 may include a plurality of encoders and the same digital signal may be encoded into a plurality of different error correction codes, and then the 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, the performance of error correction may be improved as compared to the case where the apparatus 100 includes a smaller number of encoders. Thus, higher stability and reliability of radio metrology can be provided.

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

Referring to FIG. 4, with respect to an encoding scheme performed by the encoder 130 described with reference to FIG. 3, a pseudo code for a process of implementing 171 convolutional codes and 133 convolutional codes, which are IEEE 802.11a standards, is described. Is shown.

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

b is a result of a and 0xFFFFFF00 being ANDed so that all 8 bits of dummy bits are set to 0.

output171 is bit-shifted b, 1-bit shifted (b >> 1), 2-bit shifted (b >> 2), 3-bit shifted (b >> 3) and 6-bit shifted (b >> 6 ) May be the result of an XOR operation.

The output 171 may be generated from the combinational logic in which the 0, 1, 2, 3, 6 bit shifted results are selected. Shifting of 0, 1, 2, 3, and 6 bits may be expressed as 1111001. 171 convolutional codes can be implemented in that 1111001 is divided into 1/111/001 and binary is converted to decimal to correspond to 171.

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

The 171 convolutional code and the 133 convolutional code shown in FIG. 4 may have a value of 7 in terms of combinatorial logic among shifting results of 0, 1, 2, 3, 4, 5, and 6 bits. .

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

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

The communicator 140 may transmit a digital signal and an error correction code to the control station 200 in a wireless local area network (WLAN) manner. In detail, the communication unit 140 may communicate with the control station 200 through a Wi-Fi network.

However, the present invention is not limited thereto, and the communication unit 140 may include Bluetooth, BLE (Bluetooth Low Energy), Near Field Communication (Zigbee), Zigbee, Infrared Communication (IrDA), and WFD ( The Wi-Fi Direct (UWB), ultra wideband (UWB), Ant +, and telemetry may be used to communicate with the control station 200.

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

The TCP method is a highly reliable communication method and has a 1: 1 connection method. The TCP scheme may include a function of checking whether data is correctly transferred between the transmitting side and the receiving side. The wireless metrology system may be capable of acquiring error-free data through TCP communication.

However, the connection between the transmitting side and the receiving side may be interrupted due to the obstruction of the obstacle, the rotation of the test object 300, etc. due to the characteristics of the wireless measurement for the test object 300, which may delay the transmission of the wireless measurement data. Therefore, in order to prepare for the risk that transmission may be delayed due to the connection interruption, the communication unit 140 may transmit an error correction code to the control station 200 in a UDP manner in addition to the digital signal transmission in the TCP manner.

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

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

As the manner in which the communication unit 140 transmits the digital signal converted from the analog signal to the control station 200 is dualized, more stable and reliable wireless measurement data may be provided. In addition, as the UDP scheme is adopted in addition to the TCP scheme, radio measurement can be performed more quickly in real time. Meanwhile, the additional error control required in the UDP scheme may be implemented by the encoder 130 encoding the digital signal into an error correction code.

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

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

The primary 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. The control center 200 may include a single number of main storage devices 210 in that TCP-based communication is performed 1: 1.

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

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

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

FIG. 6 is a diagram for describing a process of decoding a convolutional code performed by a decoder included in a control center 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 value of three is exemplary, and when the apparatus 100 includes a plurality of encoders, the value 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 generate one result bit by the Viterbi algorithm by taking one bit of the same position in the three error correction codes illustrated in FIG. 6. When 32 operations are performed, decoding of the 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 the plurality of error correction codes are decoded into the same digital signal again, the digital signal is encoded by a single number of error correction codes and then decoded again. In comparison, wireless metrology data may have 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 in a test body includes steps that are processed in time series in the apparatus 100 shown in FIG. 2. Therefore, even if omitted below, the contents described above with respect to the apparatus 100 of FIG. 2 may be applied to a method for wirelessly measuring a physical quantity appearing in the test body of FIG. 7.

In operation S710, the apparatus 100 may detect an analog signal corresponding to a physical quantity.

In operation S720, the apparatus 100 may convert an analog signal into a digital signal.

In operation S730, the apparatus 100 may encode the digital signal into an error correction code.

In operation S430, the apparatus 100 may transmit a digital signal and an error correction code to the control station 200.

On the other hand, the method for wirelessly measuring the physical quantity appearing in the test body 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 tape, optical media such as CD-ROMs, DVDs, floppy disks, and the like. Such as magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions may include high-level language code that can be executed by a computer using an interpreter, as well as machine code such as produced by a compiler.

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

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

Claims (13)

In the device for wirelessly measuring the physical quantity appearing in the test body,
A sensor for sensing 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
And a communication unit for transmitting the digital signal and the error correction code to a control station. The method of claim 1,
The encoder,
And encoding the digital signal into the error correction code in a convolutional coding scheme based on dummy bits included in the digital signal. The method of claim 2,
The encoder,
At least one register to perform bit shifting on the digital signal; And
And logic circuitry to perform an exclusive OR on the at least one result shifted by the at least one register. The method of claim 2,
And the constraint of the convolutional coding scheme has a value of nine. The method of claim 1,
And the digital signal is comprised of 32 bits including 24 bits of data and 8 bits of dummy bits converted from the analog signal. The method of claim 1,
The communication unit,
Transmitting the digital signal in a transmission control protocol (TCP) scheme and transmitting the error correction code in a user datagram protocol (UDP) scheme. The method of claim 1,
Wherein the physical quantity includes 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 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 computer-readable recording medium having recorded thereon a program for implementing a method for wirelessly measuring a physical quantity appearing in a test body,
The method,
Sensing an analog signal corresponding to the physical quantity;
Converting the analog signal into 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. In the system for wirelessly measuring the physical quantity appearing in the test body,
The test body;
A sensor for sensing 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
An apparatus including a communication unit for transmitting the digital signal and the error correction code to a control station; And
Receive the digital signal and the error correction code,
And the control station for decoding the error correction code. The method of claim 10,
The control station,
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,
Receiving the digital signal by TCP method,
The at least one auxiliary storage device,
Receiving the error correction code in a UDP manner. The method of claim 11,
The decoder,
And decrypt the error correction code based on a Viterbi algorithm.

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