CN214750859U - Fixed measuring device for depth position of 3mm of directional dose equivalent rate - Google Patents
Fixed measuring device for depth position of 3mm of directional dose equivalent rate Download PDFInfo
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- CN214750859U CN214750859U CN202120075947.4U CN202120075947U CN214750859U CN 214750859 U CN214750859 U CN 214750859U CN 202120075947 U CN202120075947 U CN 202120075947U CN 214750859 U CN214750859 U CN 214750859U
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- chip microcomputer
- single chip
- probe
- electrically connected
- dose equivalent
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Abstract
The utility model provides a fixed measuring device for the depth of 3mm of the directional dose equivalent rate, which comprises at least one probe for detecting the radiation intensity of beta rays and gamma rays of a radiation field, a singlechip, a display screen and a power supply; fixed directional dose equivalent rate 3mm degree of depth department's in this scheme measuring device it carries out signal acquisition through utilizing probe detection zone through being provided with at least one detection, singlechip, display screen and power supply, and the signal transmission who gathers carries out data processing to the singlechip in, and the signal transmission after the processing shows to the display screen to know the dose rate that corresponds probe collection signal zone.
Description
Technical Field
The utility model relates to a technical field is measured in the radiation place, concretely relates to measuring device of fixed directional dose equivalent rate 3mm degree of depth department.
Background
In locations where beta and gamma radiation are present, particularly where relatively high energy beta radiation is present, such as fuel original plants and aftertreatment plants, there may be a requirement that the dose of ocular crystals exceed the international new limit of 20mSv/a if the worker is working in the relatively high radiation location for a long period of time. Therefore, there is a great need for a method for effectively detecting the radiation intensity of a workplace
The measuring device is particularly important.
Disclosure of Invention
To the defect that exists among the prior art, the utility model aims to provide a measuring device of fixed directional dose equivalent rate 3mm degree of depth department, this measuring device can measure the not regional orientation of equidirectional region in workplace
Numerical values.
In order to achieve the above object, the utility model adopts the following technical scheme:
a measurement device at a fixed directional dose equivalent rate 3mm depth, the measurement device comprising:
at least one probe for detecting the radiation intensity of beta rays and gamma rays in the radiation field;
the single chip microcomputer is electrically connected with the probe through a cable, and signals collected by the probe are transmitted to the single chip microcomputer through pulse signals;
the display screen is electrically connected with the single chip microcomputer, the single chip microcomputer processes the received pulse signals, and the processed data are displayed through the display screen;
and the power supply is electrically connected with the singlechip.
In some embodiments, the measuring device further comprises an upper computer, and the single chip microcomputer is electrically connected with the upper computer through a 485 communication module.
In some embodiments, the measuring device further comprises a lithium battery, the power supply is connected with the lithium battery through a voltage reduction circuit module and a voltage stabilizing circuit module, and the lithium battery is electrically connected with the single chip microcomputer and the probe respectively and supplies voltage to the single chip microcomputer and the probe.
The invention has the beneficial effects that: fixed directional dose equivalent rate 3mm degree of depth department's in this scheme measuring device it carries out signal acquisition through utilizing probe detection zone through being provided with at least one detection, singlechip, display screen and power supply, and the signal transmission who gathers carries out data processing to the singlechip in, and the signal transmission after the processing shows to the display screen to know the dose rate that corresponds probe collection signal zone.
Drawings
Fig. 1 is the utility model provides a measuring device structure principle sketch map of fixed directional dose equivalent rate 3mm degree of depth department.
Fig. 2 is the utility model provides a measuring device work flow schematic diagram of fixed directional dose equivalent rate 3mm degree of depth department.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the following detailed description.
Referring to fig. 1, the present embodiment provides a fixed type directional dose equivalent rate measuring device at a depth of 3mm, which comprises at least one probe for detecting radiation intensity of beta rays and gamma rays in a radiation field, a single chip microcomputer, a display screen and a power supply. In practice, when the number of the selected probes is small, the incidence direction of the probes facing a certain radiation field intensity can be adjusted; when a large number of probes are used, the probes can be uniformly distributed and measured within 360 degrees, for example, the included angle between 4 probes can be adjusted to 90 degrees, and the included angle between 6 probes can be adjusted to 90 degrees
The signals collected by all the probes are transmitted to the single chip microcomputer through cables, namely the signals collected by each probe are converted into pulse signals through the amplifying circuit and the amplitude discrimination forming circuit and then transmitted to the single chip microcomputer through the cables, and the single chip microcomputer processes the received pulse signals and displays processed signal results on the display screen.
The single chip microcomputer processes the received pulse signals according to the following principle: the I-F conversion frequency pulse counts from each probe are read into a single chip microcomputer CPU, and the count values (frequency) are multiplied by a coefficient calibrated by a standard radiation field within preset measuring time (timing) to display a directional dose equivalent value (mu Sv/h or mSv/h) per hour. The measurement principle of the data, namely the frequency measurement principle, is that the singlechip counts the number of frequency pulses in the timing measurement time through pins for displaying. And displaying data which is the number of frequency pulses in the timing measurement time/the timing measurement time. For example, the timing measurement time is 30 seconds, the display data 800 μ Sv/h is 2400 pulses/30 seconds, the display data 8ms v/h is 2400000 pulses/30 seconds, and the unit of transition between ms v/h and μ Sv/h is divided by 1000.
In some embodiments, the measuring device further comprises an upper computer, the single chip microcomputer transmits the acquired and processed probe signals to the upper computer through the 485 communication module for display, so that an operator can know the dose rate data of the probe in the detection area.
In some embodiments, the measuring device further comprises a lithium battery, the power supply (220V alternating current) is connected with the lithium battery through a voltage reduction circuit module and a voltage stabilizing circuit module, and the lithium battery is respectively electrically connected with the single chip microcomputer and the probe and supplies voltage to the single chip microcomputer and the probe. The probe is electrically connected with the single chip microcomputer through the amplifying circuit module and the amplitude discrimination forming circuit module which are arranged on the probe.
The operation of the measuring device will be briefly described with reference to fig. 2:
each path of probe acquires the radiation dose of a detection area, the acquired data is transmitted to the single chip microcomputer through a pulse signal, the single chip microcomputer processes the received pulse signal and displays the dose rate value of the acquired area through a display screen; simultaneously the singlechip passes through 485 communication module and converts the pulse signal after handling into digital signal, and the digital signal transmission after the conversion is to the host computer, and the host computer shows received digital signal to operating personnel can know the dose rate of surveying the detection area.
The principle of the measuring device is as follows: according to the interaction between rays and substances, when gamma rays and beta rays enter a front window of a detector, the gamma rays and the beta rays penetrate an aluminized polyester film at the front end of the detector to enter a plastic scintillator, energy is deposited in the plastic scintillator, generated photoelectrons enter an SiPM or PMT, the SiPM or PMT collects photoelectric signals and outputs pulse signals, the pulse height is in direct proportion to the deposition energy of incident rays, and finally the pulse signals are processed to measure the position
The numerical value of (c).
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalent technologies, the present invention is also intended to include such modifications and variations.
Claims (3)
1. A fixed directional dose equivalent rate measurement device at a depth of 3mm, the measurement device comprising:
at least one probe for detecting the radiation intensity of beta rays and gamma rays in the radiation field;
the single chip microcomputer is electrically connected with the probe through a cable, and signals collected by the probe are transmitted to the single chip microcomputer through pulse signals;
the display screen is electrically connected with the single chip microcomputer, the single chip microcomputer processes the received pulse signals, and the processed data are displayed through the display screen;
the power supply is electrically connected with the single chip microcomputer;
the probe is electrically connected with the single chip microcomputer through the amplifying circuit module and the amplitude discrimination forming circuit module which are arranged.
2. The fixed type device for measuring the directional dose equivalent rate at the depth of 3mm as claimed in claim 1, further comprising an upper computer, wherein the single chip microcomputer is electrically connected with the upper computer through a 485 communication module.
3. The device for measuring the fixed directional dose equivalent rate at the depth of 3mm as claimed in claim 1 or 2, wherein the device further comprises a lithium battery, the power supply is connected with the lithium battery through a voltage reduction circuit module and a voltage stabilizing circuit module, and the lithium battery is respectively electrically connected with the single chip microcomputer and the probe to provide voltage for the single chip microcomputer and the probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120075947.4U CN214750859U (en) | 2021-01-12 | 2021-01-12 | Fixed measuring device for depth position of 3mm of directional dose equivalent rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120075947.4U CN214750859U (en) | 2021-01-12 | 2021-01-12 | Fixed measuring device for depth position of 3mm of directional dose equivalent rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214750859U true CN214750859U (en) | 2021-11-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120075947.4U Active CN214750859U (en) | 2021-01-12 | 2021-01-12 | Fixed measuring device for depth position of 3mm of directional dose equivalent rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214750859U (en) |
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2021
- 2021-01-12 CN CN202120075947.4U patent/CN214750859U/en active Active
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