CN210038173U - X-ray and gamma-ray alarm - Google Patents
X-ray and gamma-ray alarm Download PDFInfo
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- CN210038173U CN210038173U CN201920237909.7U CN201920237909U CN210038173U CN 210038173 U CN210038173 U CN 210038173U CN 201920237909 U CN201920237909 U CN 201920237909U CN 210038173 U CN210038173 U CN 210038173U
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Abstract
The utility model discloses an X, gamma ray alarm. The ray alarm instrument comprises a processing module, a detection module, a gating detection module, a display module, an alarm module, a first indication module, a second indication module and a high-voltage module. On one hand, the ray alarm not only realizes the function of timely displaying the radioactive ray dosage rate and the accumulated dosage through the display module; moreover, the display module is also provided with a multi-gear dose threshold alarm, realizes indication and alarm in an acousto-optic mode, and can be used in occasions with different radiation intensities, so that the personnel safety is ensured, and radiation safety accidents are avoided. On the other hand, the radiation alarm instrument can also prompt the opening/closing state of a protective door of a radiotherapy machine room to prevent radiation from leaking. In addition, the ray alarm can also display time and temperature, so that the functions of the ray alarm are more diversified.
Description
Technical Field
The utility model relates to an X, gamma ray alarm belongs to the radioactive ray detection technology field.
Background
Radiation sources harmful to human bodies exist in the fields of medical treatment, production, safety, detection and the like, particularly in medical radiotherapy places. The reason for this is that the patient needs to be treated with radiotherapy equipment, which generates X and gamma rays during use. For example, medical linear accelerators or X-ray machines may produce X-rays, and cobalt-60 treatments may produce gamma rays. If a worker or a non-worker mistakenly enters a machine room with the radiotherapy equipment, radiation generated by the radiotherapy equipment can cause injury to the worker or the non-worker and can seriously endanger life. Therefore, it is necessary to detect the X-rays or gamma-rays generated by the radiotherapy equipment.
At present, an X-ray and gamma-ray testing instrument is generally adopted to detect radiation generated by radiotherapy equipment, and when the dosage of the radiation is excessive, an alarm is given to prompt workers or non-workers not to enter a machine room of the radiotherapy equipment so as to avoid injury. However, the X-ray and γ -ray testing apparatus has a single function, and for example, the dose rate and the accumulated dose of the detected radiation cannot be displayed, so that the staff or the non-staff members cannot grasp the radiation dose in the machine room in time. In addition, the X-ray and gamma-ray testing instrument cannot prompt the opening/closing state of the machine room protective door, so that the phenomenon of radioactive ray leakage is easy to occur, and the instrument can also cause injury to personnel passing through the machine room protective door.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an X, gamma ray alarm.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an X-ray and gamma-ray alarm instrument comprises a processing module, a detection module, a gate control detection module, a display module, an alarm module, a first indication module, a second indication module and a high-voltage module; the processing module is connected with the detection module on one hand and connected with the display module on the other hand, the detection module and the gate control detection module are respectively connected with the display module, the display module is respectively connected with the alarm module, the first indication module and the second indication module, and the high-voltage module is connected with the detection module.
Preferably, the display module comprises a display screen assembly, a feedback unit and a trigger unit; the display screen assembly is respectively connected with the feedback unit and the trigger unit, and the display screen assembly and the trigger unit are also respectively connected with the processing module.
Preferably, the display screen assembly comprises a multi-digit nixie tube and a cable adapter box, and corresponding pins of the multi-digit nixie tube are correspondingly connected with corresponding pins of a first wiring end of the cable adapter box; the brightness pin of the multi-bit nixie tube is respectively connected with the input end of the feedback unit, the first indication module and one input end of the trigger unit, the output end of the feedback unit is connected with the field synchronization pin of the multi-bit nixie tube, and the field synchronization pin of the multi-bit nixie tube is respectively connected with the other input end of the trigger unit and the second indication module.
Preferably, the feedback unit includes a first resistor and a second resistor, one end of the first resistor is connected to the brightness pin of the multi-bit nixie tube, the other end of the first resistor is connected to one end of the second resistor and the power module, respectively, and the other end of the second resistor is connected to the field synchronization pin of the multi-bit nixie tube.
Preferably, the trigger unit comprises a violation trigger and a first capacitor; two input ends of the violation trigger are correspondingly connected with a brightness pin and a field synchronization pin of the multi-bit nixie tube, an output end of the violation trigger is connected with one end of the first capacitor, and the other end of the first capacitor is grounded.
Preferably, the first indication module and the second indication module respectively include a third resistor, a first transistor and one or more groups of light emitting diodes, the input end of each group of light emitting diodes is connected to the power supply module, a fourth resistor is arranged between the output ends of two adjacent groups of light emitting diodes, one end of the third resistor is connected to the brightness pin of the multi-bit nixie tube, the other end of the third resistor is connected to the base of the first transistor, the drain of the first transistor is connected to one end of the fourth resistor, and the source of the first transistor is grounded.
Preferably, the alarm module comprises a fifth resistor, a second transistor, a slide rheostat and a buzzer; one end of the fifth resistor is connected with the output end of the trigger unit, the other end of the fifth resistor is connected with the base electrode of the second crystal triode, the drain electrode of the second crystal triode is connected with one end of the sliding rheostat, the drain electrode of the second crystal triode is grounded, the other end of the sliding rheostat is connected with one end of the buzzer, and the other end of the buzzer is connected with the power module.
Wherein better, the detection module adopts the geiger count pipe that has self-checking function, the geiger count pipe is installed and is located near radiotherapy equipment's wall in the radiotherapy computer lab.
Preferably, the door control detection module adopts a door magnetic switch, the door magnetic switch is connected with the display screen assembly, and the door magnetic switch is installed on the door edge of a protective door of a radiotherapy machine room.
Preferably, the X-ray and gamma-ray alarm further comprises a housing, and the front surface of the housing is provided with a dose display area corresponding to the display module, a gate control indicator corresponding to the first indicator module, a source output indicator corresponding to the second indicator module, and a time and temperature display area.
The X-ray and gamma-ray alarm provided by the utility model not only realizes the function of timely displaying the radioactive ray dosage rate and the accumulated dosage through the display module; moreover, the display module is also provided with a multi-gear dose threshold alarm, realizes indication and alarm in an acousto-optic mode, and can be used in occasions with different radiation intensities, so that the personnel safety is ensured, and radiation safety accidents are avoided. On the other hand, the X-ray and gamma-ray alarm instrument can also prompt the opening/closing state of a protective door of a radiotherapy machine room to prevent radioactive rays from leaking. In addition, the X-ray and gamma-ray alarm can also display time and temperature, so that the functions of the X-ray and gamma-ray alarm are more diversified.
Drawings
Fig. 1 is a schematic block diagram of an X-ray and gamma-ray alarm provided by the present invention;
fig. 2 is a schematic circuit diagram of a display module, an alarm module, a first indication module and a second indication module in the X-ray and gamma-ray alarm provided by the present invention;
fig. 3 is a front view of the X-ray and gamma-ray alarm provided by the present invention;
fig. 4 is a schematic diagram of the time adjustment button in the X-ray and gamma-ray alarm provided by the present invention.
Detailed Description
The technical content of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the X-ray and gamma-ray alarm provided by the present invention comprises a processing module 1, a detection module 2, a gate control detection module 3, a display module 4, an alarm module 5, a first indication module 6, a second indication module 7, a high voltage module 8, and a power module 9; the processing module 1 is connected with the detection module 2 on one hand and the display module 4 on the other hand; the detection module 2 and the door control detection module 3 are respectively connected with a display module 4, and the display module 4 is respectively connected with an alarm module 5, a first indication module 6 and a second indication module 7; the high-voltage module 8 is connected with the detection module 2; the power module 9 is respectively connected with the processing module 1, the detection module 2, the gate control detection module 3, the display module 4, the alarm module 5, the first indication module 6, the second indication module 7 and the high voltage module 8.
When the X-ray and gamma-ray alarm instrument is applied to a machine room with radiotherapy equipment (hereinafter referred to as radiotherapy machine room for short), the opening/closing state of a protective door of the radiotherapy machine room is detected through the door control detection module 3, so that the first indication module 6 indicates; when a protective door of a radiotherapy machine room is in a closed state, the protective door is fed back to the alarm module 5 and the second indication module 7 through the display module 4, so that the alarm module 5 and the second indication module 7 are in a working state (namely, a loop where the alarm module 5 and the second indication module 7 are located is in a conducting state); at this moment, under the high-pressure effect of high-voltage module 8, if processing module 1 receives the radiation dose that detection module 2 detected, second indication module 7 then instructs, processing module 1 still sends the radiation dose that receives to display module 4 and judges and show simultaneously, when display module 4 judges that the radiation dose that receives exceeds the radiation dose threshold value that sets up in advance, make alarm module 5 report to the police, in order to play the effect of danger warning, thereby prevent that in staff or non-staff's mistake income radiotherapy computer lab, avoid causing the injury.
The radiation dose refers to a dose rate or an integrated dose of scattered X or gamma radiation generated by a radiotherapy apparatus during radiotherapy of a patient. The radiation dose threshold includes a dose rate threshold and an integrated dose threshold of scattered radiation. When the dose rate of scattered radiation of the radioactive rays generated by the radiotherapy equipment exceeds a dose rate threshold value, an alarm module 5 is used for giving an alarm; when the cumulative dose of scattered radiation of the radiation generated by the radiotherapy apparatus exceeds the cumulative dose threshold, the alarm module 5 is caused to alarm.
As shown in FIG. 2, the display module 4 comprises a display screen assembly 41, a feedback unit 42 and a trigger unit 43, the display screen assembly 41 is respectively connected with the feedback unit 42 and the trigger unit 43, the display screen assembly 41 and the trigger unit 43 are also respectively connected with the processing module 1, wherein the display screen assembly 41 comprises a multi-bit nixie tube 410 and a cable adapter box 411, the 1 st to 4 th pins (an input pin ①, a brightness pin ②, a line synchronization pin ③ and a field synchronization pin ④ respectively) of the multi-bit nixie tube 410 and the 1 st to 3 th and 5 th pins of a first terminal J2 of the cable adapter box 411 are correspondingly connected, two groups of pins 1 to 4 of the multi-bit nixie tube 410 and the 6 th to 9 th terminals (an input pin ⑥, a brightness pin ⑦, a line synchronization pin ⑧) of the cable adapter box are respectively connected with the detection module 2 and the gate detection module 3, the second terminal J3 and the third terminal J3 are respectively connected with the first terminal J2. of the multi-bit nixie tube 410 and the output terminal of the multi-bit nixie tube 410 and the alarm module 410 is connected with the multi-bit alarm unit 410 when the multi-bit input terminal 42 and the multi-bit alarm unit 410 is connected with the multi-bit alarm unit 410, the multi-bit module 410 is connected with the alarm unit 410, the alarm unit 42, the multi-bit module 410, the alarm unit is connected with the alarm unit 410, the alarm unit 42, the alarm unit 410, the alarm unit is connected with the alarm unit 410, the multi-bit module 410, the alarm unit, and the alarm.
Specifically, as shown in fig. 2, the feedback unit 42 includes a first resistor R11 and a second resistor R12, wherein one end of the first resistor R11 is used as the input end of the feedback unit 42 for connecting the brightness pin of the multi-bit nixie tube 410; the other end of the first resistor R11 is connected to one end of the second resistor R12 and the power module 9, respectively, and the other end of the second resistor R12 is used as the output end of the feedback unit 42 for connecting the field synchronization pin of the multi-bit nixie tube 410. When the door control detection module 3 detects that the protective door of the radiotherapy machine room is in a completely closed state, the first indication module 6 indicates; moreover, the feedback unit 42 enables the loops where the alarm module 5 and the second indication module 7 are located to be in a conducting state, so that the triggering unit 43 is convenient to trigger the alarm module 5 to alarm according to the judgment result; at the same time, the second indicating module 7 is caused to indicate as soon as the detecting module 2 detects scattered radiation of the radiation.
As shown in fig. 2, the trigger unit 43 includes a violation trigger U1 (e.g., a violation trigger with model CD 4011) and a first capacitor C1; two inputs of the violation flip-flop U1 are used as two inputs of the flip-flop unit 43 for corresponding connection with the luminance pin and the field sync pin of the multi-bit nixie tube 410. The output terminal of the violation flip-flop U1 is connected to one terminal of a first capacitor C1, and the other terminal of the first capacitor C1 is grounded. According to the actual requirements of the user, a plurality of radiation dose thresholds can be set in the violation trigger U1 in advance by the processing module 1 for different radiation intensity occasions. When the radiation dose detected by the detection module 2 exceeds a preset radiation dose threshold, the alarm module 5 is triggered to alarm. The first capacitor C1 is used to discharge static electricity to protect against the trigger violation.
In order to avoid interference signals in the current flowing into the trigger unit 43, a second capacitor and a diode may be sequentially disposed along the current path between one input terminal of the trigger unit 43 and the pin of the multi-bit nixie tube 410 to which it needs to be connected, and a third capacitor (also along the current path) may be disposed between the other input terminal of the trigger unit 43 and the pin of the multi-bit nixie tube 410 to which it needs to be connected.
And the first indicating module 6 is used for indicating the opening/closing state of a protective door of the radiotherapy machine room. This first indication module 6 includes the third resistance, first transistor and a set or multiunit emitting diode (D1 ~ Dn, n is the positive integer), power module 9 is connected to every emitting diode's of group input, be provided with the fourth resistance between adjacent two sets of emitting diode's the output, the luminance pin of multiposition charactron 410 is connected to the one end of third resistance, first transistor T1 base is connected to the other end of third resistance R2, the one end of fourth resistance is connected to first transistor T1's drain electrode, first transistor T1's source ground. Wherein each group of light-emitting diodes consists of one light-emitting diode or consists of a plurality of light-emitting diodes (D1-Dn, n is a positive integer) which are connected in series.
For example, as shown in fig. 2, the first indicating module 6 includes a third resistor R2, a first transistor T1, a fourth resistor R1, and two sets of light emitting diodes; two groups of light-emitting diodes constitute the gate control indicator light of the X-ray and gamma-ray alarm instrument. Each group of LEDs consists of two LEDs connected in series (such as LEDs D1-D4 shown in FIG. 2); the connection relationship of the parts of the first indication module 6 is the same as above, and is not described herein again. When the door control detection module 3 detects that the protective door of the radiotherapy machine room is in a completely closed state, each group of light emitting diodes of the first indication module 6 is in a light emitting state, for example, each group of light emitting diodes can emit green light, namely, the door control indication lamp formed by the light emitting diodes is turned on to be green, at the moment, radiotherapy equipment can be adopted to carry out radiotherapy on a patient, and a worker is prompted not to enter a radiation limitation working area. On the contrary, when door control detection module 3 detected that the guard gate of radiotherapy computer lab is in the open mode or closed when targetting in place incompletely, the gate control pilot lamp of constituteing then can not shine, the state of going out the light promptly, and at this moment, the radiotherapy setting will not work, ensures that staff and non-staff avoid the injury of radiation.
And a second indicating module 7 for indicating whether the detecting module 2 detects scattered radiation of the radiation. The structure and principle of the second indicating module 7 are the same as those of the first indicating module 6, and are not described in detail herein. Wherein, one or more groups of light emitting diodes of the second indicating module 7 form the source indicating lamp of the X-ray and gamma-ray alarm. When the door control detection module 3 detects that the protective door of the radiotherapy machine room is in a completely closed state, the feedback unit 42 enables the loop where the alarm module 5 and the second indication module 7 are located to be in a conducting state, at this time, radiotherapy equipment can be adopted to carry out radiotherapy on a patient, and as long as the detection module 2 detects scattered rays with radioactive rays, the source indicating lamp of the second indication module 7 is enabled to be red. Therefore, during the radiotherapy treatment, the gating indicator lamp and the source indicator lamp can be simultaneously lighted.
And the alarm module 5 is used for giving an alarm when the radiation dose detected by the detection module 2 exceeds a preset radiation dose threshold value. As shown in fig. 2, the alarm module 5 includes a fifth resistor R3, a second transistor T3, a sliding rheostat RW and a buzzer; one end of the fifth resistor R3 is connected to the output end of the trigger unit 43, the other end of the fifth resistor R3 is connected to the base of the second transistor T3, the drain of the second transistor T3 is connected to one end of the sliding resistor RW, the drain of the second transistor T3 is grounded, the other end of the sliding resistor RW is connected to one end of the buzzer, and the other end of the buzzer is connected to the power module 9. When the gate control indicator light and the source output indicator light are simultaneously lighted, the processing module 1 sends the received radiation dose detected by the detection module 2 to the trigger unit 43, so that the trigger unit 43 judges whether the radiation dose detected by the detection module 2 exceeds a preset radiation dose threshold, and if the radiation dose exceeds the radiation dose threshold, a buzzer of the alarm module 5 is triggered to give an alarm, so that a worker can timely turn off the radiotherapy equipment.
The detection module 2 can adopt a Geiger counting tube with a self-checking function, and the Geiger counting tube is connected with the high-voltage module 8, the processing module 1, the display screen assembly 41 of the display module 4 and the power module 9; the detection module 2 is arranged on a wall surface near the radiotherapy equipment in the radiotherapy machine room so as to realize the detection of scattered rays generated by the radiotherapy equipment. The high voltage module 8 is a high voltage power supply module (for example, a high voltage power supply module with a model of HG956 may be adopted), and a preset working voltage (for example, a voltage of about 400V) is provided to the geiger counter tube through the high voltage module 8, so that the geiger counter tube can detect scattered rays of radioactive rays, and send the scattered rays of the detected radioactive rays to the processing module 1 in a dosage form, and the processing module 1 can control the multi-bit nixie tube 410 of the display screen assembly 41 to display in a dosage rate or accumulated dosage form. The processing module 1 may further send the received scattered radiation dose to the triggering unit 43, so that the triggering unit 43 determines that the radiation dose detected by the detection module 2 exceeds the radiation dose threshold according to a preset radiation dose threshold, and if the radiation dose threshold is exceeded, the alarm module 5 is triggered to alarm. Wherein, the processing module 1 can adopt a microcontroller.
The gate control detection module 3 may employ a gate magnetic switch. The door magnetic switch is connected with the display screen assembly 41; the door magnetic switch is arranged on the door edge of a protective door of a radiotherapy machine room; when the protective door is completely closed, the door magnetic switch is in a closed state, so that the gated indicator light of the first indicator module 6 is turned on to be green, and the loop in which the alarm module 5 and the second indicator module 7 are located is in a conducting state through the feedback unit 42. When the protective door is in an open state or is not completely closed in place, the door magnetic switch is in an off state, so that the door control indicator light of the first indicator module 6 is not lighted, and a loop in which the alarm module 5 and the second indicator module 7 are located is in an off state.
As shown in fig. 2, the power module 9 includes an ac/dc power supply unit 91 and a dc/dc unit 92, the ac/dc power supply unit 91 is connected to the dc/dc unit 92, the ac/dc power supply unit 91 is configured to convert the commercial power into +15V voltage, and the voltage is converted into +5V voltage through the dc/dc unit 92; the voltage converted by the ac/dc power supply unit 91 is used for providing working voltage for the alarm module 5, the first indication module 6 and the second indication module 7; the voltage converted by the dc/dc unit 92 is used to provide working voltages for the processing module 1, the detection module 2, the gate control detection module 3, the display module 4 and the high voltage module 8.
As shown in fig. 3, the X-ray and gamma-ray alarm apparatus further comprises a housing 10, wherein a dose display area 44 corresponding to the display module 4, a gate control indicator lamp 61 corresponding to the first indicator module 6 and a source output indicator lamp 71 corresponding to the second indicator module 7 are respectively arranged on the front surface of the housing 10; the processing module 1, the display module 4, the alarm module 5, the first indication module 6, the second indication module 7, the high-voltage module 8 and the power module 9 are respectively arranged on the inner side of the shell 10. When the X-ray and gamma-ray alarm instrument is used in a radiotherapy machine room, the X-ray and gamma-ray alarm instrument can be installed on the wall outside the radiotherapy machine room, so that workers or non-workers can see data displayed on the X-ray and gamma-ray alarm instrument in time.
In order to facilitate observation of whether the dose display region 44 displays the dose rate or the accumulated dose of the radiation, a dose rate unit (μ sv/h) and a dose rate indicator 440, an accumulated dose unit (μ sv) and an accumulated dose indicator 441 may be respectively disposed beside the dose display region 44, and the dose rate indicator and the dose indicator are respectively connected to the processing module 1; furthermore, a switch button (not shown) may be disposed at a side position of the housing to facilitate arbitrary switching between the accumulated dose and the dose rate. For example, when the dose rate of radiation needs to be displayed, if the dose display region 44 is currently in the integrated dose display state (the integrated dose indicator lamp 441 is on), the dose display region 44 may be switched to the dose rate display state (the dose rate indicator lamp 440 is on) by the switch key.
In order to facilitate use in different radiation intensity situations, a threshold key and a confirmation key may be provided on the side surface of the housing 10, so as to set different dose rate thresholds and integrated dose thresholds of scattered radiation of radiation. The threshold key and the confirmation key are connected to the processing module 1, respectively, and a plurality of dose rate thresholds and cumulative dose thresholds can be set in advance in the violation trigger U1 by the processing module 1. Specifically, in the power-on state, when the dose display area 44 displays the current dose rate, the threshold key may be pressed, the keys may be pressed continuously as needed, and when the required dose rate threshold is displayed, the confirmation key may be pressed for confirmation. Also, when the dose display area 44 displays the current cumulative dose, the cumulative dose threshold value may be set in the above-described manner.
A time and temperature display area 11 for displaying the lifetime calendar time and the current temperature is also provided on the front surface of the case 10. The time and temperature display areas 11 respectively realize the display of different numbers through a plurality of multi-digit nixie tubes. The devices and the working principle adopted for displaying the time and the current temperature in the time and temperature display area 11 are the prior mature technology. For example, when displaying the time of the perpetual calendar, the display can be realized by a clock chip, a GPS receiving module and a plurality of multi-bit nixie tubes. When the current temperature is displayed, the display can be realized through a temperature sensor, an analog-digital conversion module and a plurality of multi-bit nixie tubes. When the displayed time is found to be inaccurate and needs to be adjusted, a time adjusting button can be arranged on the side surface of the shell 10; as shown in fig. 4, the time adjustment buttons may include a reset button, a set/move button, an alarm button, a modify button, and a reduce button. The time adjustment by the time adjustment key is a conventional technique, and is not described herein again.
The X-ray and gamma-ray alarm provided by the utility model not only realizes the function of timely displaying the radioactive ray dosage rate and the accumulated dosage through the display module; moreover, the display module is also provided with a multi-gear dose threshold alarm, realizes indication and alarm in an acousto-optic mode, and can be used in occasions with different radiation intensities, so that the personnel safety is ensured, and radiation safety accidents are avoided. On the other hand, the X-ray and gamma-ray alarm instrument can also prompt the opening/closing state of a protective door of a radiotherapy machine room to prevent radioactive rays from leaking. In addition, the X-ray and gamma-ray alarm can also display time and temperature, so that the functions of the X-ray and gamma-ray alarm are more diversified.
The X-ray and gamma-ray alarm provided by the present invention has been described in detail above. Any obvious modifications to the device, which would be obvious to those skilled in the art, without departing from the essential spirit of the invention, are intended to be covered by the appended claims.
Claims (10)
1. An X-ray and gamma-ray alarm instrument is characterized by comprising a processing module, a detection module, a gate control detection module, a display module, an alarm module, a first indication module, a second indication module and a high-voltage module; the processing module is connected with the detection module on one hand and the display module on the other hand, the detection module and the gate control detection module are respectively connected with the display module, the display module is respectively connected with the alarm module, the first indication module and the second indication module, and the high-voltage module is connected with the detection module.
2. The X, gamma ray alarm apparatus of claim 1 wherein:
the display module comprises a display screen assembly, a feedback unit and a trigger unit; the display screen assembly is respectively connected with the feedback unit and the trigger unit, and the display screen assembly and the trigger unit are also respectively connected with the processing module.
3. The X, gamma ray alarm apparatus of claim 2 wherein:
the display screen assembly comprises a multi-digit nixie tube and a cable adapter box, wherein corresponding pins of the multi-digit nixie tube are correspondingly connected with corresponding pins of a first wiring end of the cable adapter box; the brightness pin of the multi-bit nixie tube is respectively connected with the input end of the feedback unit, the first indication module and one input end of the trigger unit, the output end of the feedback unit is connected with the field synchronization pin of the multi-bit nixie tube, and the field synchronization pin of the multi-bit nixie tube is respectively connected with the other input end of the trigger unit and the second indication module.
4. The X, gamma ray alarm apparatus of claim 3 wherein:
the feedback unit comprises a first resistor and a second resistor, one end of the first resistor is connected with the brightness pin of the multi-bit nixie tube, the other end of the first resistor is respectively connected with one end of the second resistor and the power supply module, and the other end of the second resistor is connected with the field synchronization pin of the multi-bit nixie tube.
5. The X, gamma ray alarm apparatus of claim 3 wherein:
the trigger unit comprises a violation trigger and a first capacitor; two input ends of the violation trigger are correspondingly connected with a brightness pin and a field synchronization pin of the multi-bit nixie tube, an output end of the violation trigger is connected with one end of the first capacitor, and the other end of the first capacitor is grounded.
6. The X, gamma ray alarm of claim 4 wherein:
the first indication module and the second indication module respectively comprise a third resistor, a first transistor and one or more groups of light-emitting diodes, each group of light-emitting diodes is connected with the input end of the power module, a fourth resistor is arranged between the output ends of the adjacent two groups of light-emitting diodes, one end of the third resistor is connected with the brightness pin of the multi-bit nixie tube, the other end of the third resistor is connected with the base electrode of the first transistor, the drain electrode of the first transistor is connected with one end of the fourth resistor, and the source electrode of the first transistor is grounded.
7. The X, gamma ray alarm of claim 4 wherein:
the alarm module comprises a fifth resistor, a second crystal triode, a slide rheostat and a buzzer; one end of the fifth resistor is connected with the output end of the trigger unit, the other end of the fifth resistor is connected with the base electrode of the second crystal triode, the drain electrode of the second crystal triode is connected with one end of the sliding rheostat, the drain electrode of the second crystal triode is grounded, the other end of the sliding rheostat is connected with one end of the buzzer, and the other end of the buzzer is connected with the power module.
8. The X, gamma ray alarm apparatus of claim 1 wherein:
the detection module adopts the geiger count pipe that has self-checking function, the geiger count pipe is installed and is located near radiotherapy equipment's wall in the radiotherapy computer lab.
9. The X, gamma ray alarm apparatus of claim 2 wherein:
the door control detection module adopts a door magnetic switch, the door magnetic switch is connected with the display screen assembly, and the door magnetic switch is installed on the door edge of a protective door of a radiotherapy machine room.
10. The X, gamma ray alarm device of claim 1 further comprising a housing having a front surface provided with a dose display area corresponding to said display module, a gate indicator corresponding to said first indicator module, an out-source indicator corresponding to said second indicator module, and a time and temperature display area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920237909.7U CN210038173U (en) | 2019-02-25 | 2019-02-25 | X-ray and gamma-ray alarm |
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| CN201920237909.7U CN210038173U (en) | 2019-02-25 | 2019-02-25 | X-ray and gamma-ray alarm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112907914A (en) * | 2021-02-09 | 2021-06-04 | 陕西卫峰核电子有限公司 | Nuclear criticality alarm system and alarm method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112907914A (en) * | 2021-02-09 | 2021-06-04 | 陕西卫峰核电子有限公司 | Nuclear criticality alarm system and alarm method thereof |
| CN112907914B (en) * | 2021-02-09 | 2022-01-25 | 陕西卫峰核电子有限公司 | Nuclear criticality alarm system and alarm method thereof |
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