CN213957642U - Radiation detector for detecting radioactive source tank and radioactive source tank - Google Patents

Abstract

The utility model provides a radiation detector and radioactive source jar for detecting radioactive source jar. The radiation detector comprises a radiation detection module, an in-place sensor for detecting whether the radiation detector is positioned on the transport vehicle, a motion sensor, a motion judgment module, a processor and a first communication module in wireless communication with the remote monitoring center; the radiation signal input end of the processor is connected with the output end of the radiation detection module, and the first communication interface of the processor is connected with the wired connection end of the first communication module; the motion judging module is respectively connected with the in-place sensor and the motion sensor, and the output end of the motion judging module is connected with the standby control end of the processor. When the radiation detector is in place and does not move, the movement judgment module outputs a first control signal to enable the processor to enter a standby mode, and when the radiation detector is out of place and/or does not move, the movement judgment module outputs a second control signal to enable the processor not to be in standby mode, so that electric quantity can be greatly saved, and operation time can be prolonged.

Description

Radiation detector for detecting radioactive source tank and radioactive source tank

Technical Field

The utility model relates to a radiation source management control technical field, concretely relates to radiation detector and radiation source jar for detecting radiation source jar.

Background

At present, with the development of nuclear application technology, the application of radioactive sources in the fields of industry, agriculture, scientific research and the like is more and more extensive, but the radiation accidents caused by the loss of the radioactive sources are more and more, and particularly, the radiation accidents, such as loss, leakage and the like in the transportation and use process bring great harm to the society. In order to avoid the loss of the radioactive source in the transportation process, whether the radiation source tank is on the transport vehicle or not is usually judged by monitoring a radiation dose signal or a positioning signal or an RFID signal and the like output by the radiation detector (which is installed on the radiation source tank) in real time, the radiation detector is required to work all the time in the transportation process, however, the radiation detector is powered by a battery, the battery power is limited, the available power for the operation of the radiation source tank can be reduced due to the large power consumption in the transportation process, and the operation time of the radiation source tank is reduced. If the battery capacity is increased, on one hand, the cost is increased, on the other hand, the size and the weight of the radiation detector are also increased, the carrying and the transportation are not changed, and the energy waste is also caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects existing in the prior art, the utility model aims to provide a radiation detector and a radioactive source jar for detecting the radioactive source jar.

In order to achieve the above object of the present invention, according to a first aspect of the present invention, the present invention provides a radiation detector for detecting a radioactive source tank, comprising a radiation detection module, an in-place sensor for detecting whether the radiation detector is located on a transport vehicle, a motion sensor, a motion judgment module, a processor and a first communication module in wireless communication with a remote monitoring center; the radiation signal input end of the processor is connected with the output end of the radiation detection module, and the first communication interface of the processor is connected with the wired connection end of the first communication module; the input end of the motion judgment module is respectively connected with the output end of the in-place sensor and the output end of the motion sensor, and the output end of the motion judgment module is connected with the standby control end of the processor.

The technical scheme is as follows: the radiation detection module can detect the radiation dose of the radiation source tank and transmit a radiation dose signal to a remote monitoring center through the processor and the first communication module; the motion judgment module receives output signals of the in-place sensor and the motion sensor, when the radiation detector is in place and does not move (namely, the radiation detector is static on a transport vehicle), the motion judgment module outputs a first control signal to enable the processor to enter a standby mode, the processor stops collecting the output signal of the radiation detection module, the first communication module does not work, the electric quantity can be greatly saved, the operation time is prolonged, when the radiation detector is out of place (namely, the radiation detector is not on the transport vehicle) and/or the radiation detector moves on the transport vehicle, the motion judgment module outputs a second control signal to enable the processor not to be standby, and the radiation quantity signal output by the radiation detection module is uploaded in real time when the radiation detector enters a normal working mode.

In a preferred embodiment of the present invention, the motion determining module includes a first comparator, a motion reference power supply, and an and gate; the positive input end of the first comparator is connected with the output end of the motion reference power supply, the negative input end of the first comparator is connected with the output end of the motion sensor, the output end of the first comparator is connected with the first input end of the AND gate, the output end of the in-place sensor is connected with the second input end of the AND gate, and the output end of the AND gate is connected with the standby control end of the processor.

The technical scheme is as follows: through the hardware structure circuit of the motion judgment module, when the radiation detector is placed on a vehicle, the in-place sensor outputs a high level, if the signal output by the motion sensor is smaller than the output signal of the motion reference power supply, the radiation detector is considered to be static, the first comparator outputs the high level, the AND gate outputs the high level, and the processor is in standby; when the radiation detector is placed on the transport vehicle and the signal output by the motion sensor is greater than the output signal of the motion reference power supply, or when the radiation detector is not placed on the transport vehicle, the AND gate outputs a low level and the processor is awakened from a standby state. The hardware structure has low cost and reliable operation.

The utility model relates to a in the preferred embodiment, still include orientation module, orientation module's output is connected with the location signal input of treater.

The technical scheme is as follows: facilitating acquisition of the real-time position of the radiation detector.

The utility model relates to an in the preferred embodiment, still include the second communication module with other equipment communication on the transport vechicle, the second communication interface of treater is connected with the wired link of second communication module.

The technical scheme is as follows: the device is convenient for information interaction with other devices on the transport vehicle, and the other devices can conveniently acquire the position range of the radiation detector.

In a preferred embodiment of the present invention, the RFID tag is further included.

The technical scheme is as follows: each radiation detector is uniquely marked.

The utility model relates to an in the preferred embodiment, still include wireless receiving module and the management module that charges, wireless receiving module's that charges output is connected with the input of the management module that charges, and the output and the battery charge of management module hold and are connected, the charge control end and the control end of the management module that charges of treater are connected.

The technical scheme is as follows: can realize the wireless charging to inside battery, need not the staff and get the battery of putting closely, improve the operational safety nature.

The utility model relates to a preferred embodiment still includes the display, the control end of display is connected with the demonstration control end of treater.

The technical scheme is as follows: the radiation dose display device is used for displaying the radiation dose of the radiation source tank and is convenient for visual observation.

The utility model relates to a preferred embodiment, still include battery, drum and with the knob formula top cap of the opening spiral connection of drum, place battery, motion sensor, first communication module, motion judgement module, orientation module, second communication module, treater, charge management module in the drum, the drum outside is equipped with wireless receiving module that charges; and a display is arranged on the knob type top cover.

The technical scheme is as follows: the knob type top cover is adopted, so that the disassembly is convenient, the structure is compact, and the occupied space is small.

In order to realize the above object of the present invention, according to the second aspect of the present invention, the present invention provides a radioactive source tank, which is characterized in that, the tank body equipped with radioactive source inside and the tank body surface installed in the tank body surface as the radiation detector for detecting radioactive source tank.

The technical scheme is as follows: when the radioactive source tank is arranged on a transport vehicle, the radiation detector can enter a standby state, so that the energy consumption is reduced, and the operation time can be prolonged.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a system block diagram of a radiation detector for detecting a radiation source canister in a preferred embodiment of the invention;

fig. 2 is a hardware structure diagram of a motion determination module according to a preferred embodiment of the present invention;

FIG. 3 is a schematic external view of a radiation detector for detecting a radiation source canister according to a preferred embodiment of the present invention;

FIG. 4 is a schematic diagram of a power supply circuit of a radiation detection module according to a preferred embodiment of the present invention;

fig. 5 is a schematic circuit diagram of a first communication module according to a preferred embodiment of the present invention;

FIG. 6 is a schematic diagram of a motion sensor connection circuit according to a preferred embodiment of the present invention;

fig. 7 is a schematic circuit diagram of a positioning module according to a preferred embodiment of the present invention;

fig. 8 is a schematic diagram of a power supply boost circuit according to a preferred embodiment of the present invention.

Reference numerals:

a cylinder 1; a knob top cover 2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The utility model discloses a radiation detector for detecting radioactive source jar, as shown in figure 1 and figure 3, in a preferred embodiment, the radiation detector includes radiation detection module, whether detection radiation detector is located the sensor that targets in place on the transport vechicle, motion sensor, motion judgement module, treater and with the first communication module of remote monitoring center wireless communication; the radiation signal input end of the processor is connected with the output end of the radiation detection module, and the first communication interface of the processor is connected with the wired connection end of the first communication module; the input end of the motion judgment module is respectively connected with the output end of the in-place sensor and the output end of the motion sensor, and the output end of the motion judgment module is connected with the standby control end of the processor.

In this embodiment, the radiation detector is preferably, but not limited to, an existing BGO radiation detector or a silicon-based radiation detector, and preferably, the radiation detector is a radiation detector chip of type BG51, a power supply circuit of the radiation detector chip is shown in fig. 4, two RC filter circuits are connected in series in the power supply circuit to filter out power supply noise, the resistance values of R1 and R2 are preferably, but not limited to, 1.8K Ω, and the resistance values of C1 and C2 are preferably, but not limited to, 4.7 uF.

In the present embodiment, a special placement position is preset for the radiation detector on the transportation vehicle, and the in-place sensor preferably but not limited to adopts a first structure or a second structure, the first structure is a correlation type photoelectric switch structure, a light emitting portion (which may be a light emitting diode) of the correlation type photoelectric switch is located at the placement position of the transportation vehicle, a light receiving portion (which may be a photodiode) of the correlation type photoelectric switch is located on the outer wall of the cylinder 1 of the radiation detector, and an output end of the light receiving portion is used as an output end of the in-place sensor. When the radiation detector is placed at a preset placement position, the light receiving portion is positioned opposite to the light emitting portion and receives light emitted from the light emitting portion, the light receiving portion outputs a high level, and when the radiation detector is not placed at the preset placement position, the light receiving portion does not receive light and outputs a low level. The structure II comprises a weighing sensor, a second comparator and a first conductive contact which are pre-buried at the bottom of a preset placing position, the second conductive contact is arranged on a cylinder 1 of the radiation detector and is used as the output end of the in-place sensor, the output end of the weighing sensor is connected with the positive input end of the second comparator, the negative input end of the second comparator is connected with a weighing reference voltage, the output end of the second comparator is connected with the first conductive contact, when the radiation detector is placed at the preset placing position, the first conductive contact and the second conductive contact are in contact conduction, the output voltage of the weighing sensor under the gravity action of the radiation detector is greater than the weighing reference voltage, the second comparator outputs a high level, the second conductive contact obtains a high level, and if the radiation detector is not placed at the preset placing position, the second comparator outputs a low level, the second conductive contact attains a low level and the weighing reference voltage preferably ranges, but not limited to, from 0 to 0.5V. The second comparator is preferably, but not limited to, LM 324.

In this embodiment, preferably, the in-place sensor may also be an existing RFID identifier, and an output terminal of the RFID identifier is connected to the standby control terminal of the processor. The RFID tag correspondingly matched with the RFID identifier is arranged on the transport vehicle, the RFID identifier can be used as an in-place sensor due to the fact that the RFID identification distance is small, when the radiation detector is far away from the transport vehicle, the RFID identifier cannot identify the low level output by the RFID tag of the transport vehicle, and when the radiation detector is within the FRID sensing range, the RFID identifier can identify the high level output by the RFID tag of the transport vehicle.

In the present embodiment, the motion sensor is preferably, but not limited to, an existing gyroscope or acceleration sensor. The acceleration sensor is preferably, but not limited to, TE7105A, which is selected to have an output voltage ranging from 0 to 5V. Fig. 6 is a schematic circuit diagram of the motion sensor when the acceleration vibration sensor with the model number MMA8452Q is selected, and the motion sensor is connected with the processor through an I2C serial port.

In this embodiment, the processor is preferably, but not limited to, an SC51 single chip microcomputer. The first communication module is preferably, but not limited to, a 3G or 4G wireless radio frequency communication module capable of long-distance communication, the circuit diagram of the 4G radio frequency communication module is shown in fig. 5, and the processor is in communication connection with the first communication module through the PCM interface. The method and the program involved in the process that the processor collects the output signal of the radiation detection module and sends the output signal to the remote monitoring center through the first communication module are the prior art, and are not described herein again.

In a preferred embodiment, as shown in fig. 2, the motion determination module includes a first comparator, a motion reference power supply, and an and gate; the positive input end of the first comparator is connected with the output end of the motion reference power supply, the negative input end of the first comparator is connected with the output end of the motion sensor, the output end of the first comparator is connected with the first input end of the AND gate, the output end of the in-place sensor is connected with the second input end of the AND gate, and the output end of the AND gate is connected with the standby control end of the processor.

In the present embodiment, the first comparator is preferably, but not limited to, LM 324; and gates are preferably but not limited to 7408 or 7409; the output voltage range of the motion reference power supply is preferably but not limited to 0 to 20% of the full scale range of the output signal of the motion sensor, the output voltage can be preset, the motion reference power supply preferably but not limited to comprises a voltage reference chip and a resistance voltage division network, and the output voltage of the voltage reference chip is divided by the resistance voltage division network to obtain a preset voltage value.

In this embodiment, preferably, the standby control terminal of the processor includes a standby interrupt pin and a standby wakeup interrupt pin, and the output terminal of the motion determination module is connected to the delayed standby interrupt pin and the standby wakeup interrupt pin, respectively. The method comprises the following steps that a standby entering instruction or program is arranged in a processor (the instruction or program can be obtained according to a user manual of a selected processor chip and is the prior art), the standby entering instruction or program is set to be triggered and executed by a high level of a delay standby interrupt pin, meanwhile, the standby wakeup interrupt pin is configured to be triggered by a low level, and the prior art can be adopted in the technical scheme, such as a website: the method provided in https:// blog.csdn.net/qq _27312943/article/details/52554155 or http:// www.elecfans.com/emb/danpianji/20190109847288.html or https:// blog.csdn.net/qq _33869371/article/details/80691539 configures interrupt pins and setting instructions, which will not be described herein again.

In this embodiment, when the radiation detector is placed on a transport vehicle, the in-place sensor outputs a high level, and at this time, if the output voltage of the motion sensor is less than the output voltage of the motion reference power supply, the first comparator outputs a high level, the and gate outputs a high level to the standby interrupt pin of the processor, and the processor executes a standby instruction and enters a power saving mode; when the radiation detector is not placed on the transport vehicle, the in-place sensor outputs a low level, the AND gate outputs the low level to the standby awakening interrupt pin of the processor, the processor enters a normal working mode, and the radiation dose of the radiation source tank output by the radiation detection module is collected and uploaded to the remote monitoring center, so that the processor is in the normal working mode during operation of the radiation source tank, warehouse entry and exit and when the radiation source tank is carried on the vehicle.

In a preferred embodiment, as shown in fig. 1, the system further comprises a positioning module, and an output end of the positioning module is connected with a positioning signal input end of the processor.

In this embodiment, the positioning module is preferably but not limited to an existing GPS positioning module or a beidou positioning module product, when the beidou positioning module is selected, a circuit diagram is shown in fig. 7, and the beidou positioning module is connected and communicated with the processor through a UART serial port.

In a preferred embodiment, as shown in fig. 1, the transport vehicle further comprises a second communication module for communicating with other devices on the transport vehicle, and the second communication interface of the processor is connected with the wired connection end of the second communication module.

In the present embodiment, the second communication module is preferably, but not limited to, an existing Lora wireless lan module, and the communication distance thereof is smaller than that of the first communication module, but the communication distance can be 200 meters or more, which can meet the distance requirement in the operation of the radiation source tank. The second communication module is preferably connected to communicate with the processor via an SDIO parallel interface.

In a preferred embodiment, it is preferable that an RFID tag is further included, and the RFID tag can be adhered to the outer wall of the cylinder 1.

In a preferred embodiment, as shown in fig. 1, the system further includes a wireless charging receiving module and a charging management module, an output end of the wireless charging receiving module is connected to an input end of the charging management module, an output end of the charging management module is connected to a battery charging end, and a charging control end of the processor is connected to a control end of the charging management module.

In this embodiment, preferably, the wireless charging receiving module includes a coil for receiving the alternating magnetic field of the charging source, a rectifier, and a low-pass filter, an output end of the coil is connected to an input end of the rectifier, an output end of the rectifier is connected to an input end of the low-pass filter, an output end of the low-pass filter is connected to an input end of the charging management module, and the charging management module preferably, but not limited to, selects an existing charging management chip (e.g., BQ 24165). Preferably, the coil is provided on the outer wall of the cylinder 1 or the knob top 2.

In a preferred embodiment, as shown in fig. 1, the system further comprises a display, and a control terminal of the display is connected with a display control terminal of the processor.

In the present embodiment, the display is preferably, but not limited to, an LED display screen, which may be disposed on the upper surface of the knob top 2 or the outer sidewall of the cylinder 1.

In a preferred embodiment, as shown in fig. 2, the wireless charging device further comprises a battery, a cylinder 1 and a knob type top cover 2 spirally connected with an opening of the cylinder 1, wherein the battery, a motion sensor, a first communication module, a motion judgment module, a positioning module, a second communication module, a processor and a charging management module are placed in the cylinder 1, and a wireless charging receiving module is arranged outside the cylinder 1; a display is arranged on the knob type top cover 2.

In the present embodiment, it is preferable that a power source voltage boost circuit for boosting the battery voltage so as to satisfy the power consumption demand of each module be further provided, and the power source voltage boost circuit is as shown in fig. 8.

The utility model also discloses a radioactive source jar, in an preferred embodiment, including the inside jar body that is equipped with the radiation source and install in the above-mentioned radiation detector who is used for detecting radioactive source jar of a jar external surface.

In this embodiment, the radiation detector may be fixedly mounted to the upper surface or side of the tank by means of existing attachment mechanisms such as bolts, and may be integrated with the tank, preferably but not limited to a lead tank, during use and handling.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A radiation detector for detecting a radioactive source tank is characterized by comprising a radiation detection module, an in-place sensor for detecting whether the radiation detector is positioned on a transport vehicle, a motion sensor, a motion judgment module, a processor and a first communication module in wireless communication with a remote monitoring center, wherein the first communication module is used for carrying out wireless communication with the remote monitoring center;

the radiation signal input end of the processor is connected with the output end of the radiation detection module, and the first communication interface of the processor is connected with the wired connection end of the first communication module;

the input end of the motion judgment module is respectively connected with the output end of the in-place sensor and the output end of the motion sensor, and the output end of the motion judgment module is connected with the standby control end of the processor.

2. The radiation detector for detecting a radiation source canister according to claim 1, wherein the motion determination module comprises a first comparator, a motion reference power supply, and an and gate;

the positive input end of the first comparator is connected with the output end of the motion reference power supply, the negative input end of the first comparator is connected with the output end of the motion sensor, the output end of the first comparator is connected with the first input end of the AND gate, the output end of the in-place sensor is connected with the second input end of the AND gate, and the output end of the AND gate is connected with the standby control end of the processor.

3. The radiation detector of claim 1, further comprising a positioning module, an output of the positioning module being coupled to a positioning signal input of the processor.

4. A radiation detector for detecting a radiation source canister as claimed in claim 1, further comprising a second communication module for communicating with other equipment on the transport vehicle, the second communication interface of the processor being connected to the wired connection of the second communication module.

5. The radiation detector for inspecting a radiation source canister, as recited in claim 1, further comprising an RFID tag.

6. The radiation detector of claim 1, further comprising a wireless charging receiver module and a charging management module, wherein an output of the wireless charging receiver module is connected to an input of the charging management module, an output of the charging management module is connected to a battery charging terminal, and a charging control terminal of the processor is connected to a control terminal of the charging management module.

7. The radiation detector for inspecting a radiation source canister according to any of claims 1-6, further comprising a display, a control terminal of the display being connected to a display control terminal of the processor.

8. The radiation detector of claim 7, further comprising a battery, a cylinder and a knob top cover screwed to the opening of the cylinder, wherein the battery, the motion sensor, the first communication module, the motion determination module, the positioning module, the second communication module, the processor and the charging management module are disposed in the cylinder, and a wireless charging receiving module is disposed outside the cylinder; and a display is arranged on the knob type top cover.

9. A radiation source canister comprising a canister body containing a radiation source therein and a radiation detector according to any one of claims 1 to 8 mounted on an outer surface of the canister body for inspecting the radiation source canister.

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