CN217133382U - SiPM power supply board and radiation detection system - Google Patents
SiPM power supply board and radiation detection system Download PDFInfo
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- CN217133382U CN217133382U CN202123198925.6U CN202123198925U CN217133382U CN 217133382 U CN217133382 U CN 217133382U CN 202123198925 U CN202123198925 U CN 202123198925U CN 217133382 U CN217133382 U CN 217133382U
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Abstract
The application provides a SiPM supplies power board and radiation detection system, the SiPM supplies power the board and includes: the USB port is used for accessing a power supply voltage; the first voltage conversion module is used for converting the power supply voltage into a first preset voltage; and the voltage regulation module is used for regulating the first preset voltage and outputting a SiPM bias voltage, and the SiPM bias voltage is used for supplying power to a bias power supply end of the SiPM detector. On one hand, the SiPM power supply board can realize plug and play through the USB port, and compared with a linear power supply which has larger volume, lower efficiency and serious heating, the SiPM power supply board has wider application range and is suitable for developing a miniaturized SiPM detector; on the other hand, the SiPM power supply board can adjust the first preset voltage through the voltage adjusting module, so that the output SiPM bias voltage precision is higher, and the performance of the SiPM detector is stable.
Description
Technical Field
The application relates to the technical field of radiation detection, in particular to an SiPM power supply board and a radiation detection system.
Background
A Silicon photomultiplier (SiPM) is a photoelectric detection device widely used in the field of radiation detection, and is gradually replacing the conventional photoelectric sensor PMT. Its advantages are small size, low working voltage, low power consumption and insensitivity to magnetic field. However, SiPM detectors have high requirements on the supply circuitry in order to obtain a high quality detector signal due to their high level of dark noise.
At present, a special power supply source for the SiPM detector is not available, a linear power supply with small ripples is generally used in a laboratory to supply power to the SiPM detector, but the linear power supply has the obvious defects of large volume, low efficiency, serious heating and the like, and is not suitable for developing the miniaturized SiPM detector.
Disclosure of Invention
An object of this application is to provide a SiPM power supply board and radiation detection system, and the SiPM power supply board passes through the USB port and realizes plug-and-play, and the range of application is wider, is applicable to the development of miniaturized SiPM detector.
The purpose of the application is realized by adopting the following technical scheme:
the application provides a SiPM power supply board, the SiPM power supply board includes:
a USB port for accessing a supply voltage;
the first voltage conversion module is used for converting the power supply voltage into a first preset voltage;
and the voltage regulating module is used for regulating the first preset voltage and outputting an SiPM bias voltage, and the SiPM bias voltage is used for supplying power to a bias power supply end of the SiPM detector.
The technical scheme has the beneficial effects that: on one hand, the SiPM power supply board can realize plug and play through the USB port, and compared with a linear power supply which has larger volume, lower efficiency and serious heating, the SiPM power supply board has wider application range and is suitable for developing a miniaturized SiPM detector; on the other hand, the SiPM power supply board can adjust the first preset voltage through the voltage adjusting module, so that the output SiPM bias voltage precision is higher, and the performance of the SiPM detector is stable.
In some optional embodiments, the first voltage conversion module employs a DC-DC boost chip.
The technical scheme has the beneficial effects that: the DC-DC boost chip has high voltage conversion efficiency, and excessive heat energy loss can be avoided by selecting the DC-DC boost chip.
In some optional embodiments, the SiPM power board further includes a second voltage conversion module and a third voltage conversion module;
the second voltage conversion module is used for converting the power supply voltage into a second preset voltage, and the second preset voltage is used for supplying power to a first power supply end of the SiPM detector;
the third voltage conversion module is used for converting the power supply voltage into a third preset voltage, and the third preset voltage is used for supplying power to a second power supply end of the SiPM detector.
The technical scheme has the beneficial effects that: the SiPM power supply board can utilize the second voltage conversion module to supply power for the first power supply end of the Si PM detector, and utilizes the third voltage conversion module to supply power for the second power supply end of the SiPM detector, so that the power supply requirement of the SiPM detector is met.
In some optional embodiments, the second voltage conversion module and the third voltage conversion module both employ DC-DC buck chips.
The technical scheme has the beneficial effects that: the DC-DC voltage reduction chip has high voltage conversion efficiency, and excessive heat energy loss can be avoided by selecting the DC-DC voltage reduction chip.
In some optional embodiments, the first supply terminal is a non-inverting input terminal of the operational amplifier circuit of the SiPM detector, and the second supply terminal is an inverting input terminal of the operational amplifier circuit of the SiPM detector.
The technical scheme has the beneficial effects that: the SiPM power supply board can utilize the second voltage conversion module and the third voltage conversion module to meet the power supply requirement of an operational amplifier circuit of the SiPM detector.
In some optional embodiments, the SiPM power board further comprises an MCU and a DAC, the MC U communicatively connected with the DAC;
the MCU is used for generating a voltage control signal and sending the voltage control signal to the DAC;
the DAC is used for receiving the voltage control signal, generating a voltage regulation signal according to the voltage control signal and sending the voltage regulation signal to the voltage regulation module;
the voltage adjusting module is used for receiving the voltage adjusting signal, adjusting the first preset voltage according to the voltage adjusting signal and outputting the SiPM bias voltage.
The technical scheme has the beneficial effects that: the SiPM power supply board can utilize the MCU and the DAC to accurately adjust the first preset voltage, and outputs the preset SiPM bias voltage by configuring the DAC, so that the requirements in practical application are met.
In some optional embodiments, the SiPM power board further includes a thermistor electrically connected with the MCU;
the MCU is used for acquiring the temperature information of the SiPM power supply board through the thermistor, generating the voltage control signal according to the temperature information and sending the voltage control signal to the DAC.
The technical scheme has the beneficial effects that: the SiPM power supply board can detect the temperature information of the thermistor in real time through the MCU, and adjust the output of the DAC in real time according to the temperature information of the thermistor, so that the first preset voltage is adjusted in real time, the real-time temperature compensation of SiPM bias voltage is realized, and the performance of the SiPM detector is ensured not to change obviously along with the temperature change.
In some optional embodiments, the MCU comprises an ADC;
the ADC is used for converting an analog signal obtained by detecting the thermistor into a digital signal so that the MCU can obtain the temperature information of the SiPM power supply board according to the digital signal.
The technical scheme has the beneficial effects that: the ADC can be arranged inside the MCU, the temperature information of the SiPM power supply board is acquired by the ADC, the speed is high, and the precision is high.
In some alternative embodiments, the SiPM power supply plate has a length of 30mm to 100mm and a width of 20mm to 50 mm.
The technical scheme has the beneficial effects that: the SiPM power supply board is set to be in a proper size, so that the SiPM power supply board can be applied to various SiPM-based detector systems, and the requirements in most application scenes are met.
In some alternative embodiments, the SiPM power board has a length of 50mm and a width of 26.9m m.
The technical scheme has the beneficial effects that: the SiPM power supply board has a compact structure, is convenient for users to carry to outdoor use, and has a wide application range.
In a second aspect, the present application provides a radiation detection system comprising:
any of the SiPM power supply boards described above;
SiPM detector for detecting radioactive substance.
The technical scheme has the beneficial effects that: be applied to the SiPM detector with the SiPM power supply board, portable SiPM power supply board can support the user to use the SiPM detector in the open air, has promoted radiation detection system's use greatly and has experienced.
In some alternative embodiments, the radioactive material includes one or more of alpha rays, beta rays, and gamma rays.
The technical scheme has the beneficial effects that: the user can select a suitable SiPM detector according to performance requirements and cost requirements in practical application.
Drawings
The present application is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an SiPM power supply board provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a voltage regulation module according to an embodiment of the present application.
In the figure: 1. a SiPM power supply board; 10. a USB port; 11. a first voltage conversion module; 12. a second voltage conversion module; 13. a third voltage conversion module; 14. a voltage regulation module; 15. MCU; 16. a DAC; 17. a thermistor; 18. an ADC; 20. a bias power supply terminal; 21. a first power supply terminal; 22. a second power supply terminal; 23. a ground terminal; 24. a signal output end of the SiPM detector; 25. SiPM; r1, a first resistor; r2, a first resistor; r3, a first resistor; c1, a first capacitance; c2, a second capacitance.
Detailed Description
The present application is further described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the present application, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment without conflict.
Referring to fig. 1, the present application provides an SiPM power supply board 1, the SiPM power supply board 1 including:
a USB port 10, wherein the USB port 10 is used for accessing a power supply voltage;
the first voltage conversion module 11, the first voltage conversion module 11 is configured to convert the power supply voltage into a first preset voltage;
and a voltage regulation module 14, wherein the voltage regulation module 14 is configured to regulate the first preset voltage and output an SiPM bias voltage, and the SiPM bias voltage is configured to supply power to a bias power supply terminal 20 of the SiPM detector.
The SiPM detector may include a SiPM20, a second capacitor C2, a third resistor R3, and an operational amplifier circuit.
The SiPM20 may include a first terminal, i.e., the bias supply terminal 20 of the SiPM detector, of the SiPM20 and a second terminal, i.e., the signal output terminal 24 of the SiPM detector, of the SiPM 20.
A first terminal of the SiPM20 may be connected to the voltage regulation module 14, a second terminal of the SiPM20 may be connected to a second capacitor C2 to output a signal, and a second terminal of the SiPM20 may be further connected to ground through a third resistor R3. The second capacitor C2 plays a role of dc blocking.
The voltage regulation module 14 used is not limited in this application.
The voltage regulating module 14 may include, for example, a first resistor R1, a second resistor R2, and a first capacitor C1.
The voltage regulation module 14 may include a voltage input, an analog signal input, and an output;
the voltage input terminal of the voltage regulating module 14 may be connected to the output terminal of the voltage regulating module 14 through a first resistor R1 and a second resistor R2 connected in series;
the analog signal input of the voltage regulation module 14 may be connected between the first resistor R1 and the second resistor R2;
the output of the voltage regulation module 14 may be connected to the bias supply 20 of the SiPM detector, and the output of the voltage regulation module 14 may also be connected to ground through a first capacitor C1.
The first resistor R1 and the first capacitor C1 play a role of filtering, and the second resistor R2 plays a role of voltage division.
The first voltage conversion module 11 may include a voltage output terminal, and the voltage output terminal of the first voltage conversion module 11 may be connected to a voltage input terminal of the voltage regulation module 14.
The first voltage conversion module 11 may be grounded.
The voltage values of the supply voltage and the SiPM bias voltage are not limited in the present application, and the voltage value of the supply voltage may be, for example, 3V, 5V, or 9V, and the voltage value of the SiPM bias voltage may be, for example, 20V, 26V, 31V, or 35V.
Therefore, on one hand, the SiPM power supply board 1 can realize plug and play through the USB port 10, and compared with a linear power supply which is large in size, low in efficiency and serious in heating, the SiPM power supply board 1 is wide in application range and suitable for development of a miniaturized SiPM detector; on the other hand, the SiPM power supply board 1 can adjust the first preset voltage through the voltage adjusting module 14, so that the output SiPM bias voltage has high precision, and the performance of the Si PM detector is stable.
In a specific application, the USB port 10 may be electrically connected to the ground 23, and the ground 23 may be represented by GND.
In some alternative embodiments, the first voltage conversion module 11 may employ a DC-DC boost chip.
Therefore, the voltage conversion efficiency of the DC-DC boost chip is high, and the DC-DC boost chip can avoid excessive heat energy loss.
In some optional embodiments, the SiPM power board 1 may further include a second voltage conversion module 12 and a third voltage conversion module 13;
the second voltage conversion module 12 is configured to convert the power supply voltage into a second preset voltage, where the second preset voltage is used to supply power to the first power supply terminal 21 of the SiPM detector;
the third voltage conversion module 13 is configured to convert the power supply voltage into a third preset voltage, where the third preset voltage is used to supply power to the second power supply terminal 22 of the SiPM detector.
The voltage values of the second preset voltage and the third preset voltage are not limited in the present application, the voltage value of the second preset voltage may be, for example, +3V, +3.3V or +3.6V, and the voltage value of the third preset voltage may be, for example, -3V, -3.3V or-3.6V.
Therefore, the SiPM power supply board 1 can utilize the second voltage conversion module 12 to supply power to the first power supply end 21 of the SiPM detector, and utilize the third voltage conversion module 13 to supply power to the second power supply end 22 of the SiPM detector, so as to meet the power supply requirement of the SiPM detector.
In some alternative embodiments, the second voltage conversion module 12 and the third voltage conversion module 13 may both employ DC-DC voltage reduction chips.
Therefore, the voltage conversion efficiency of the DC-DC voltage reduction chip is high, and the DC-DC voltage reduction chip can avoid excessive heat energy loss.
In some alternative embodiments, the first supply terminal 21 may be a non-inverting input terminal of an operational amplifier circuit of the SiPM detector, and the second supply terminal 22 may be an inverting input terminal of the operational amplifier circuit of the SiPM detector.
Thus, the SiPM power supply board 1 can meet the power supply requirement of the operational amplifier circuit of the SiPM detector by using the second voltage conversion module 12 and the third voltage conversion module 13.
In a specific application, the SiPM power supply board 1 inputs a 5V power supply voltage through the Micro USB port 10, the power supply voltage outputs an SiPM bias voltage through the first voltage conversion module 11 and the voltage regulation module 14, the voltage value of the SiPM bias voltage may range from 26V to 31V, the ripple is low, the ripple of the SiPM bias voltage may be lower than 1mV, and the power supply requirement of the bias voltage power supply terminal 20 of the SiPM detector is fully satisfied.
On the other hand, the power supply voltage outputs a second preset voltage of +3.3V through the second voltage conversion module 12, and outputs a third preset voltage of-3.3V through the third voltage conversion module 13, so that the power supply requirement of the SiPM detector operational amplifier circuit is met.
The first voltage conversion module 11 adopts a DC-DC boost chip, and the second voltage conversion module 12 and the third voltage conversion module 13 both adopt DC-DC buck chips, so that the size is small, the volume of the whole SiPM power supply board 1 is greatly reduced, and the SiPM power supply board is particularly suitable for being carried by a user; and the power consumption of the DC-DC boost chip and the DC-DC buck chip is lower, and the SiPM power supply board 1 can supply power for the SiPM detector with the working current of 300 mA.
In some optional embodiments, the SiPM power board 1 may further include an MCU15 and a DAC16, the MCU15 communicatively connected with the DAC 16;
the MCU15 is used for generating a voltage control signal and sending the voltage control signal to the DA C16;
the DAC16 is configured to receive the voltage control signal, generate a voltage adjustment signal according to the voltage control signal, and send the voltage adjustment signal to the voltage adjustment module 14;
the voltage adjusting module 14 is configured to receive the voltage adjusting signal, adjust the first preset voltage according to the voltage adjusting signal, and output the SiPM bias voltage.
A DAC, a digital-to-analog converter, also called a D/a converter, is a device that converts a digital signal into an analog signal.
Referring to FIG. 2, in one particular application, DAC16 may include an analog signal output, and the analog signal output of DAC16 may be coupled to the analog signal input of voltage regulation module 14.
DAC16 may be connected to ground.
In a specific application, the SiPM power board 1 can realize accurate adjustment of the first preset voltage through the MCU15 and the DAC16, and the adjustment accuracy can be within 2 mV.
Therefore, the SiPM power board 1 can utilize the MCU15 and the DAC16 to precisely adjust the first preset voltage, and output a preset SiPM bias voltage by configuring the DAC16, thereby meeting the requirements of practical applications.
In some optional embodiments, the SiPM power board 1 may further include a thermistor 17, the thermistor 17 being electrically connected with the MCU 15;
the MCU15 is used for acquiring the temperature information of the SiPM power supply board 1 through the thermistor 17, generating the voltage control signal according to the temperature information and sending the voltage control signal to the DA C16.
The MCU15 may store therein a temperature compensation algorithm for implementing real-time temperature compensation of the SiPM bias.
The temperature compensation algorithm used in the present application is not limited, and in a specific application, the MCU15 may control the DAC16 to linearly adjust the first preset voltage according to the temperature compensation algorithm and the temperature information of the thermistor 17, thereby implementing real-time temperature compensation of the SiPM bias voltage.
In another specific application, the MCU15 can select a preset temperature adjustment curve according to a temperature compensation algorithm, and control the DAC16 to perform a non-linear adjustment on the first preset voltage based on the temperature adjustment curve and the temperature information of the thermistor 17, thereby implementing a real-time temperature compensation of the SiPM bias voltage.
Therefore, the SiPM power supply board 1 can detect the temperature information of the thermistor 17 in real time through the MCU15, and adjust the output of the DAC16 in real time according to the temperature information of the thermistor 17, so as to adjust the first preset voltage in real time, realize the real-time temperature compensation of the SiPM bias voltage, and ensure that the performance of the SiPM detector does not change significantly with the temperature change.
In some optional embodiments, the MCU15 includes an ADC 18;
the ADC18 is configured to convert an analog signal obtained by detecting the thermistor 17 into a digital signal, so that the MCU15 obtains temperature information of the SiPM power board 1 according to the digital signal.
An ADC, an analog-to-digital converter, also called an a/D converter, is a device that converts an analog signal into a digital signal.
Therefore, the ADC18 can be installed inside the MCU15, and the ADC18 can be used to acquire temperature information of the SiPM power supply board 1, which is fast and accurate.
In some alternative embodiments, the SiPM power supply plate 1 has a length of 30mm to 100mm and a width of 20mm to 50 mm.
Therefore, the SiPM power supply board 1 is set to be in a proper size, so that the SiPM power supply board can be applied to various SiPM-based detector systems, and the requirements in most application scenes are met.
In some alternative embodiments, the SiPM power supply board 1 has a length of 50mm and a width of 26.9 mm.
Therefore, the SiPM power supply board 1 is compact in structure, convenient to carry by a user to outdoor use and wide in application range.
The present application provides a radiation detection system, the radiation detection system comprising:
any of the SiPM power supply boards 1 described above;
SiPM detector, used for detecting radioactive substance.
From this, supply board 1 with the SiPM and be applied to the SiPM detector, portable SiPM supplies board 1 can support the user to use the SiPM detector in the open air, has promoted radiation detection system's use greatly and has experienced.
In some alternative embodiments, the radioactive material includes one or more of alpha rays, beta rays, and gamma rays.
Therefore, a user can select a proper SiPM detector according to the performance requirement and the cost requirement in practical application.
The terms "first," "second," "third," "fourth," "fifth," "sixth," "seventh," "eighth," "ninth," and the like in the description and in the claims of the present application and in the above-described drawings (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "corresponding" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
While the present application is described in terms of various aspects, including exemplary embodiments, the principles of the invention should not be limited to the disclosed embodiments, but are also intended to cover various modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. An SiPM power supply board, characterized in that the SiPM power supply board comprises:
a USB port for accessing a supply voltage;
the first voltage conversion module is used for converting the power supply voltage into a first preset voltage;
and the voltage regulation module is used for regulating the first preset voltage and outputting a SiPM bias voltage, and the SiPM bias voltage is used for supplying power to a bias power supply end of the SiPM detector.
2. The SiPM power supply board of claim 1, wherein the first voltage conversion module employs a DC-DC boost chip.
3. The SiPM power board of claim 1, further comprising a second voltage conversion module and a third voltage conversion module;
the second voltage conversion module is used for converting the power supply voltage into a second preset voltage, and the second preset voltage is used for supplying power to a first power supply end of the SiPM detector;
the third voltage conversion module is used for converting the power supply voltage into a third preset voltage, and the third preset voltage is used for supplying power to a second power supply end of the SiPM detector.
4. The SiPM power board of claim 3, wherein the second voltage conversion module and the third voltage conversion module both employ DC-DC buck chips.
5. The SiPM supply board of claim 4, wherein the first supply terminal is a non-inverting input terminal of an operational amplifier circuit of the SiPM detector, and the second supply terminal is an inverting input terminal of the operational amplifier circuit of the SiPM detector.
6. The SiPM power board of claim 1, further comprising an MCU and a DAC, the MCU communicatively coupled with the DAC;
the MCU is used for generating a voltage control signal and sending the voltage control signal to the DAC;
the DAC is used for receiving the voltage control signal, generating a voltage regulation signal according to the voltage control signal and sending the voltage regulation signal to the voltage regulation module;
the voltage adjusting module is used for receiving the voltage adjusting signal, adjusting the first preset voltage according to the voltage adjusting signal and outputting the SiPM bias voltage.
7. The SiPM power board of claim 6, further comprising a thermistor, the thermistor being electrically connected to the MCU;
the MCU is used for acquiring the temperature information of the SiPM power supply board through the thermistor, generating the voltage control signal according to the temperature information and sending the voltage control signal to the DAC.
8. The SiPM power board of claim 7, wherein the MCU includes an ADC;
the ADC is used for converting an analog signal obtained by detecting the thermistor into a digital signal so that the MCU can obtain the temperature information of the SiPM power supply board according to the digital signal.
9. The SiPM power supply board of claim 1, wherein the SiPM power supply board has a length of 30mm to 100mm and a width of 20mm to 50 mm.
10. The SiPM power supply board of claim 9, wherein the SiPM power supply board has a length of 50mm and a width of 26.9 mm.
11. A radiation detection system, characterized in that the radiation detection system comprises:
the SiPM power supply panel of any one of claims 1-10;
SiPM detector, used for detecting radioactive substance.
12. The radiation detection system of claim 11, wherein the radioactive material includes one or more of alpha rays, beta rays, and gamma rays.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123198925.6U CN217133382U (en) | 2021-12-17 | 2021-12-17 | SiPM power supply board and radiation detection system |
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| CN202123198925.6U CN217133382U (en) | 2021-12-17 | 2021-12-17 | SiPM power supply board and radiation detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU217698U1 (en) * | 2022-12-26 | 2023-04-12 | Общество с Ограниченной Ответственностью "Марафон" (ООО "Марафон") | Multichannel voltage source for powering silicon photoelectronic detectors based on avalanche diodes |
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2021
- 2021-12-17 CN CN202123198925.6U patent/CN217133382U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU217698U1 (en) * | 2022-12-26 | 2023-04-12 | Общество с Ограниченной Ответственностью "Марафон" (ООО "Марафон") | Multichannel voltage source for powering silicon photoelectronic detectors based on avalanche diodes |
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