KR20070103164A - Method and apparatus for wireless radioactive contamination gauge - Google Patents

Abstract

An apparatus and a method for wireless measurement of radioactive ray are provided to secure safety of a worker by increasing the distance between a radioactive detection unit and the worker body. An apparatus for wireless measurement of radioactive ray includes at least one radioactive ray detection unit(100) and a body unit(200). The body unit counts the number of pulses for a predetermined period of time from a detection signal received through a wireless network from the radioactive ray detection unit and calculates information on the amount of radioactive ray according to a measurement algorithm. The radioactive ray detection unit includes a power supply unit(150), a measurement unit(110), a pre-amplifier(120), a sorting unit(130), and a wireless transmission unit(140).

Description

Wireless radiation measuring apparatus and its method {method and apparatus for wireless radioactive contamination gauge}

1 is a view for explaining a wireless radiation measuring apparatus according to an embodiment of the present invention.

2 is a block diagram illustrating a wireless radiation measuring apparatus according to a preferred embodiment of the present invention.

3A illustrates a structure in which a radiation detection means and a body means are connected through a wireless network in a 1: 1 manner according to an embodiment of the present invention.

3b illustrates a structure in which the radiation detection means and the body means are connected via a wireless network in a 1: N manner;

3c shows a structure in which the radiation detection means and the body means are many-to-many connections (N: N).

4 is a flowchart for explaining a wireless radiation measuring method according to a preferred embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10: pole 20: handle

30: support 40: shoulder strap

100: radiation detection means 110: measuring unit

120: preamplifier 130: selector

140: wireless transmission unit 150, 260: power supply unit

200: main body means 210: radio receiver

220: control operation unit 230: output unit

240: built-in detection unit 250: selection unit

The present invention relates to a wireless radiation measuring apparatus and method thereof.

In general, radiation accidents caused by the leakage of radioactive material lead to fatal radiation overexposures that are life-threatening.

The radiation overexposure accident is more serious because the radiation worker or radiographer working in the field is not aware of the radiation leakage.

Therefore, a radiation worker or a radiation meter needs to carry out a radiation dose meter, which is a radiation measuring device that measures the radiation dose of a site, and always measure the radiation dose. Such a radiation dose meter is a survey meter or an individual exposure. Personal alarm dosimeters.

A general radiation dosimeter is composed of a radiation detection device for detecting radiation emitted from a radiation source, and a main body for counting and displaying the radiation dose detected by the radiation detection device.

In addition, the radiation dosimeter connects the radiation detection device and the main body to a pole to facilitate the wearing and use of the worker, and is used for the detection of radiation and the location of the radiation source, and is mainly used for radioactive contamination measurement in the radiation source reservoir and nuclear power plant. .

In general, a radiation dosimeter is connected to a communication line in an inner space where a radiation detection device and a main body are provided in a pole, and the radiation detection device transmits a detection signal to the main body.

However, since the radiation dosimeter is limited by the length and weight of the pole, only a short distance (about 3 to 4 meters) can be measured, and the weight is heavy, making it difficult for workers to wear and move.

In addition, since the communication line is built in the pole, it is difficult to separate the module between the radiation detection device and the main body, and it is difficult to decontaminate the radioactive contamination.

In addition, as the length of the communication line between the radiation detection apparatus and the main body increases, noise is generated in the detection signal, and thus, a clear radiation dose cannot be measured, and the weight becomes heavy.

In addition, there is a problem of over-exposure to radiation because the operator should directly measure close to the radiation source for a long time when measuring radiation in a region with a high radiation level.

In addition, since the radiation detection apparatus and the main body are connected to a communication line to measure radiation in a 1: 1 manner, radiation doses of a large area cannot be measured together, and a radiation area must be measured in a large area.

Therefore, the present invention was devised to solve the above problems, by increasing the measurement distance between the radiation detection unit and the main body for detecting radiation emitted from the radiation source (about 30 to 100m) to ensure a higher safety of the operator, the radiation It is an object of the present invention to provide a wireless radiation measuring apparatus and method for easily separating modules between a detection unit and a main body and capable of simultaneously measuring a large amount of radiation in a large area using a plurality of radiation detection units and a main body.

In accordance with one aspect of the present invention, a wireless radiation measuring apparatus detects radiation emitted from a radiation source to generate a detection signal, and after amplifying the detection signal at a predetermined ratio, One or more radiation detection means for separating a predetermined magnitude value into pulses, selecting a detection signal having a pulse having a constant magnitude value, and transmitting the same through a wireless network, and a predetermined predetermined value from a detection signal received through the wireless network from the radiation detection means. And main body means for counting the number of pulses over time to calculate and output radiation dose information according to the enamel measurement algorithm.

The radiation detecting means according to the present invention includes a power supply for providing a driving power supply of the radiation detecting means, a Geiger-Muller tube, a scintillation detector or a semiconductor sensor, and measures radiation by detecting A measurement unit for generating a signal, a preamplifier for amplifying a detection signal generated by the detection unit at a predetermined ratio, and a detection signal having a pulse having a predetermined magnitude value by dividing the noise and noise and a predetermined magnitude value of the detection signal into pulses And a sorting unit for sorting and outputting a signal, and a wireless transmitter converting the detection signal selected by the sorting unit into a Zigbee or Bluetooth format and transmitting the converted signal to a main body means through a wireless network.

The main body means according to the present invention comprises a radio receiver for receiving a detection signal from a radiation detection means via a wireless network, and counting pulses of the detection signal received from the radiation detection unit for a predetermined time to generate radiation information, A control calculation unit for calculating radiation dose information, an output unit for outputting radiation dose information calculated by the control calculation unit, a power supply unit for supplying driving power of the main body means, and detecting radiation emitted from the radiation source to control the detection signal It includes a built-in detection unit for transmitting to the operation unit.

The main body means according to the present invention is characterized by being connected in a 1: 1 manner, 1: N manner or N: N manner via a radio network with the radiation detection means.

The radiation detecting means according to the present invention includes its identification information in the detection signal and transmits it to the main body means.

The main body means which concerns on this invention grasps identification information from the detection signal received from each radiation detection means, calculates radiation dose information for each radiation detection means, and outputs radiation dose information for each radiation detection means.

The main body means according to the present invention calculates total radiation dose information corresponding to each detection signal received from each radiation detection means, or calculates and outputs average radiation dose information.

Radiation measuring device according to another aspect of the present invention, the radiation detection means for detecting the radiation emitted from the radiation source and transmitting the detection signal through the wireless network, and the radiation detection means is mounted to be detachable, adjustable in length, A pole having a shoulder strap and a handle for easy wearing by the operator, a main body means for calculating and outputting radiation dose information according to a detection signal received from the radiation detecting means, and fixedly supporting the main body and the pole, And a support coupled to the pole.

According to another aspect of the present invention, a radiation measuring method of a radiation measuring apparatus including a radiation detecting means and a main body means, when the radiation detecting means is driven, detects radiation emitted from radiation and transmits a detection signal through a wireless network. Confirming the radiation measuring mode when the main body means is driven. Detecting the radiation emitted from the radiation source if the radiation measurement mode in which the main body means is set is a first mode, calculating and outputting the detected radiation dose; and if the radiation means mode in the main body means is a second mode, Calculating and outputting the radiation dose information from the detection signal received from the radiation detection means, and calculating the radiation dose information according to the detection signals received from the plurality of radiation detection means if the main body means is in the third mode. And outputting the same.

In the main body means according to the present invention, if the radiation measurement mode is the third mode, calculating the radiation dose information includes: transmitting each radiation detection means including its own identification information in the detection signal; Grasping the identification information from the detection signal received from the detection means to calculate radiation dose information for each radiation detection means, and the main body means total radiation dose information or the average radiation dose according to each detection signal received from each radiation detection means. Calculating information.

Hereinafter, a wireless radiation measuring apparatus and a method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for explaining a wireless radiation measuring apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the radiation detection means 100 for detecting radiation emitted from the radiation source and the radiation dose detected by the radiation detection means 100 are calculated according to a dose measurement algorithm, and the radiation dose information is calculated by the operator. It is provided with a main body means 200 to confirm. The radiation detecting means 100 and the main body means 200 are connected to a wireless network.

In addition, the radiation detecting means 100 and the main body means 200 are provided with a pole 10 that can be adjusted in length, and a support 30 for fixing the main body means 200 and the pole 10. At this time, since the radiation detecting means 100 and the main body means 200 are connected through a wireless network, it is easy to adjust the length of the pole in the area of the wireless network.

One side of the pole 10 is easy for the operator to carry the radiation measuring device, the handle 20 is provided to facilitate the radiation measurement work, the pole 10 is a shoulder strap for the operator to carry the radiation measuring device Use string 40 is provided.

And, the radiation detection means 100 is implemented to be detachable from the pole 10, the support 30 and the pole 10 is removable, the support 30 and the main body is implemented to be removable. That is, each module of the radiation measuring device is preferably implemented to be detachable.

2 is a block diagram illustrating a wireless radiation measuring apparatus according to a preferred embodiment of the present invention.

Referring to FIG. 2, the radiation detecting means 100 and the main body means 200 are connected to a wireless network, for example, a wireless network such as Zigbee or Bluetooth. That is, the radiation detecting means 100 detects the radiation emitted from the radiation source and transmits the detection signal to the main body means 200 through the wireless network.

Then, the main body means 200 generates radiation information from the received detection signal, and calculates radiation dose information according to the dose measurement algorithm based on the radiation information.

The body means 200 outputs the calculated radiation dose information so that an operator can check it.

The radiation detecting means 100 includes a measuring unit 110, a preamplifier 120, a selecting unit 130, a wireless transmitter 140, and a power supply unit. The main body unit 200 includes a wireless receiver 210, The control calculator 220, an output unit 230, a built-in detector 240, a selector 250, and a power supply unit are included.

The power supply unit 150 of the radiation detection means 100 supplies the driving power of each unit since the radiation detection means 100 operates independently.

The measurement unit 110 measures the radiation emitted from the radiation source and outputs a detection signal.

The preamplifier 120 amplifies the detection signal according to a predetermined predetermined amplification ratio since the detection signal output from the measurement unit 110 is a weak signal.

Since the detection signal amplified by the predetermination unit 120 includes noise and noise, the selection unit 130 selects and outputs a detection signal in which only a pulse having a magnitude greater than or equal to a predetermined signal value exists in the detection signal.

The wireless transmitter 140 converts the detection signal selected by the selector 130 into a format that can be transmitted according to the type of the wireless network and transmits the detected signal to the main body means 200.

For example, the radio transmitter 140 transmits the detected signal to the main body means 200 through the Zigbee or Bluetooth wireless network after modulating the detection signal in the FSK method.

The power supply unit 260 of the main body means 200 supplies driving power for each unit.

The wireless receiver 210 receives a detection signal from the radiation detection means 100.

When the detection operation unit 220 receives the detection signal from the radiation detection means 100, the control operation unit 220 counts the pulse of the detection signal for a predetermined time and generates radiation dose information.

That is, a timer (not shown) of the control operation unit 220 may receive a detection signal, that is, when a detection signal having a pulse magnitude value that can be recognized from the radiation detection means 100 is received, The control operation unit 220 counts the number of pulses of the detection signal during the preset time.

The control calculator 220 calculates the radiation dose information according to the dose measurement algorithm based on the radiation information and outputs the radiation dose information through the output unit 230.

The built-in detector 240 includes a Geiger-Muller tube, a scintillation detector, or a semiconductor sensor, and measures the radiation emitted from the radiation source and transmits a detection signal to the control calculator 220.

In this case, the built-in detector 240 amplifies the detection signal at a predetermined ratio and then removes the noise and the noise, and transmits the noise to the control calculator 220.

The selector 250 of the main body means 200 is provided with a plurality of key buttons and allows the operator to select a mode for measuring radiation.

The radiation measuring mode includes a first mode in which an operator measures radiation only by the main body means 200 through the built-in detection unit 240 provided in the main body means 200, and one radiation detection means 100 and the main body means 200. ) May be divided into a second mode in which a wireless network is connected, and a third mode in which a plurality of radiation detecting means 100 and a main body means 200 are connected to a wireless network.

When the operator selects the first mode through the selector 250, the control calculator 220 of the main body means 200 drives the built-in detector 240, and the built-in detector 240 measures the radiation to detect the detection signal. The control operation unit 220 transmits.

When the detection signal is received from the built-in detector 240, the control calculator 220 calculates the radiation dose information and outputs the radiation dose through the output unit 230.

When the operator selects the second mode, the control calculator 220 calculates the radiation dose information from the detection signal received from the radiation detection means 100 through the wireless network, and outputs the radiation dose information through the output unit 230.

Meanwhile, when the operator selects the third mode, the control calculator 220 calculates the radiation dose information from the detection signals received from the plurality of radiation detection means 100 through the wireless network and outputs the radiation dose information to the output unit 230.

3A illustrates a structure in which the radiation detecting means and the main body means are connected via a wireless network in a 1: 1 manner according to an embodiment of the present invention, and FIG. FIG. 3C is a diagram illustrating a structure in which an N method is connected through a wireless network, and FIG. 3C is a diagram in which a radiation detecting means and a main body means are connected many-to-many (N: N).

As shown in FIG. 3A, one radiation detecting means 100 and the main body means 200 are connected in a 1: 1 manner, and the main body means 200 is spaced apart from the detection signal received from the radiation detecting means 100. The radiation dose information of the position can be calculated. That is, the worker can check the radiation dose from the detection signal received from the radiation detection means 100 spaced apart after carrying and shielding the main body means 200.

As shown in FIG. 3B, a plurality of radiation detecting means 100 are connected in one-to-one manner with one main body means 200, and the main body means 200 is adapted from the detection signals received from the plurality of detecting means. It is possible to calculate radiation dose information of a large area spaced apart.

At this time, the radiation detection means 100 includes its identification information in the detection signal and transmits it, and the main body means 200 grasps the identification information from the detection signal received from each radiation detection means 100, and detects each radiation. The radiation dose information is calculated for each means 100 and the radiation dose information is output for each radiation detection means 100 so that an operator can check the radiation dose information for each region where each radiation detection means 100 is located.

On the other hand, the main body means 200 may calculate the total radiation dose information according to each detection signal received from each radiation detection means 100, to calculate the radiation dose information or the average radiation dose information of the entire area.

As shown in FIG. 3C, a plurality of radiation detecting means 100 is connected to a plurality of main body means 200 through a wireless network, and the radiation detecting means 100 may transmit a detection signal to the plurality of main body means 200. have.

Each body means 200 calculates and outputs radiation dose information from detection signals received from the plurality of radiation detection means 100.

4 is a flowchart illustrating a method for measuring wireless radiation according to a preferred embodiment of the present invention.

Referring to FIG. 4, when the worker is driven by being powered on through the selector 250 (S 100), the main body means 200 checks the radiation measurement mode set by the worker (S 130).

The main body means 200 has a built-in in the main body means 200 when the operator selects a first mode in which the operator measures radiation only by the main body means 200 through the built-in detection unit 240 provided in the main body means 200. The detector 240 generates a detection signal by measuring radiation emitted from the radiation source (S 120).

Then, the main body means 200 calculates the radiation dose information from the detection signal generated by the built-in detection unit 240 and outputs it for the operator to check (S 130).

On the other hand, the main body means 200, when the operator selects a second mode in which one radiation detection means 100 and the main body means 200 is connected to the wireless network, that is, the operator turned on the power of one radiation measurement means (ON) to drive, and located in the measurement area to measure the radiation, the radiation detection means 100 measures the radiation emitted from the radiation source and transmits the detection signal to the main body means 200 via the wireless network (S 140).

Body means 200 calculates the radiation dose information from the detection signal received from the radiation detection means 100 via a wireless network, and outputs through the output unit 230 (S 150).

Further, when the main body means 200 selects the third mode in which the plurality of radiation detecting means 100 and one main body means 200 are connected to the wireless network, that is, the operator selects the plurality of radiation detecting means 100. If is located in the measurement area, each of the radiation detection means 100 measures the radiation emitted from the radiation source and transmits the detection signal to the main body means 200 via the wireless network (S 160).

At this time, the radiation detection means 100 includes its identification information in the detection signal and transmits it, and the main body means 200 grasps the identification information from the detection signal received from each radiation detection means 100, and detects each radiation. The radiation dose information is calculated for each means 100 and the radiation dose information is output for each radiation detection means 100 so that an operator can check the radiation dose information for each region where each radiation detection means 100 is located.

On the other hand, the main body means 200 calculates and outputs the total radiation dose information according to each detection signal received from each radiation detection means 100, wherein the main body means 200 is the radiation dose information or the average radiation of each region Quantity information can be calculated.

In addition, the plurality of radiation detecting means 100 may be connected to the plurality of main body means 200 through a wireless network, and the radiation detecting means 100 may transmit a detection signal to the plurality of main body means 200.

Each of the main body means 200 calculates and outputs radiation dose information from detection signals received from the plurality of radiation detection means 100 (S 170).

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and changes are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims.

As described above, according to the present invention, by connecting via a wireless network between the radiation detection means for detecting radiation emitted from the radiation source and the main body means, it is possible to increase the measurement distance (about 30 to 100m) to ensure higher operator safety. Can be easily separated module of the radiation measuring device.

In addition, it is possible to simultaneously measure radiation in a large area by using a plurality of radiation detection means and a main body means, as well as multi-connection communication in a 1: N method, so that multiple radiation detection means can be controlled by a single body. You can save money.

Claims (10)

In the radiation measuring apparatus, After detecting the radiation emitted from the radiation source to generate a detection signal, and after amplifying the detection signal by a predetermined ratio, the noise of the detection signal and the noise and the predetermined magnitude value by separating the pulse having the predetermined magnitude value One or more radiation detection means for selecting and transmitting the detection signal through a wireless network; And a main body means for counting the number of pulses for a predetermined time from the detection signal received through the wireless network from the radiation detection means to calculate and output radiation dose information according to a dose measurement algorithm. The method of claim 1, wherein the radiation detection means, A power supply unit for supplying driving power for the radiation detecting means; A measurement unit implemented as a Geiger-Muller tube, a scintillation detector, or a semiconductor sensor and measuring the radiation to generate a detection signal; A preamplifier for amplifying the detection signal generated by the detector at a predetermined ratio; A sorting unit for classifying a noise and a noise and a predetermined magnitude value of the detection signal, and selecting and outputting a detection signal having a pulse having the predetermined magnitude value; And a wireless transmitter for converting the detection signal selected by the selector into a Zigbee or Bluetooth format and transmitting the detected signal to the main body means through a wireless network. The method of claim 1, wherein the main body means, A radio receiver which receives the detection signal from the radiation detection means via the radio network; A control calculation unit for generating radiation information by counting pulses of the detection signal received from the radiation detection unit for a predetermined time, and calculating radiation dose information according to a dose measurement algorithm; An output unit for outputting the radiation dose information calculated by the control operation unit; A power supply unit for supplying driving power of the main body means; And a built-in detector configured to detect the radiation emitted from the radiation source and transmit a detection signal to the control calculator. The method of claim 1, wherein the main body means, Wireless radiation measuring apparatus is connected to the radiation detection means and the wireless network in a 1: 1, 1: N or N: N method. The method of claim 1, wherein the radiation detection means, Wireless radiation measuring apparatus including its own identification information in the detection signal and transmitted to the main body means. The method of claim 5, wherein the main body means, Wireless identification device for identifying identification information from detection signals received from the respective radiation detection means, calculating radiation dose information for each radiation detection means, and outputting radiation dose information for each radiation detection means. The method of claim 5, wherein the main body means, And a total radiation dose information corresponding to each detection signal received from each of the radiation detection means, or calculating and outputting average radiation dose information. In the radiation measuring apparatus, Radiation detection means for detecting radiation emitted from a radiation source and transmitting a detection signal through a wireless network; A pole pole which is mounted to be detachable from the radiation detecting means, the length of which is adjustable, and which has a shoulder strap and a handle for easy wearing by the operator; Main body means for calculating and outputting radiation dose information corresponding to the detection signal received from the radiation detection means; And a support fixed to the main body means and the pole, and coupled to the pole. In the radiation measuring method of the radiation measuring apparatus comprising a radiation detection means and a main body means, When the radiation detecting means is driven, detecting radiation emitted from the radiation and transmitting a detection signal through a wireless network; When the body means is driven, confirming a radiation measurement mode; Detecting radiation emitted from a radiation source, calculating and outputting the detected radiation dose if the radiation measurement mode set by the main body means is a first mode; Calculating, by the main body means, radiation dose information from a detection signal received from a radiation detecting means via the wireless network, if the radiation measuring mode is a second mode; And calculating, by the main body means, radiation dose information according to detection signals received from a plurality of radiation detection means, if the radiation measurement mode is a third mode. The method of claim 9, wherein the calculating of the radiation dose information by the main body means when the radiation measuring mode is a third mode, Each of said radiation detecting means including its identification information in a detection signal and transmitting it; The main unit means for identifying identification information from the detection signal received from each of the radiation detection means and calculating radiation dose information for each of the radiation detection means; And the main body means calculating total radiation dose information or average radiation dose information according to each detection signal received from each of the radiation detection means.

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