CN203012411U - A photon counting storage system - Google Patents
A photon counting storage system Download PDFInfo
- Publication number
- CN203012411U CN203012411U CN 201320019121 CN201320019121U CN203012411U CN 203012411 U CN203012411 U CN 203012411U CN 201320019121 CN201320019121 CN 201320019121 CN 201320019121 U CN201320019121 U CN 201320019121U CN 203012411 U CN203012411 U CN 203012411U
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- host computer
- counting
- storage system
- dsp controller
- storage
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Abstract
The utility model discloses a photon counting storage system. The photon counting storage system comprises a host computer and is characterized in that the host computer is connected with a DSP controller which is connected with a CPLD counter and a storage. The host computer transmits sampling time to the CPLD counter. The CPLD counter counts an external TTL pulse based on the sampling time and then stores the counting number within the sampling time in the storage. The counting and the storing proceed until the storage is full. The capacity of the storage is set by the host computer and may be 8k, 16k, until the largest 256k. When the storage is full, the DSP controller reads out the counting number and uploads the counting number to the host computer through a serial port. And then the counting number is saved in a txt text file. The photon counting storage system accurately counts the number of the photon, has high efficiency, and provides data basis for light field research.
Description
Technical field
The utility model relates to the photon technology field, specifically, relates to a kind of photon counting storage system.
Background technology
For centuries, the essence of light is a theme of community of physicists arguement.Up to the present, people generally accept the theory of the wave-particle duality of light.In general, the phenomenons relevant with the propagation of light such as every diffraction of light, interference and polarization, the undulatory property of light commonly used is explained; The phenomenon of the light-matter interactions such as the emission of every light, absorption, scattering and photoemissive effect, the corpuscular property of light commonly used is explained.The best photoelectric device that can survey at present faint light is photomultiplier, and it can detect the single photon event.When incident light is faint or during the atomic low light level, the pulse train of photomultiplier transit tube anode output is discrete pulse, a pulse is up to by a photon, and this is called the single photon event.The umber of pulse of output is directly proportional to the incident light subnumber.To these step-by-step countings, and then they are correspondingly processed, just can obtain many information of incident field.The light quantity measuring technique of this pulse count is called photon counting method.At present to the research of counting, storage and the transmission problem of photon, domesticly only limit to theoretic discussion, there is no the concrete device of realizing.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of photon counting storage system, accurately adds up the number of photon, for the research of light field provides the data foundation.
The utility model adopts following technological means to realize goal of the invention:
A kind of photon counting storage system comprises host computer, it is characterized in that: described host computer connects dsp controller, and described dsp controller connects CPLD counter and storer.
As the further restriction to the technical program, described host computer is connected with described dsp controller by serial ports.
As the further restriction to the technical program, described dsp controller, CPLD counter and storer are arranged on the PCB circuit board, also are provided with signal input interface, test crystal oscillating circuit and power interface on described PCB circuit board.
As the further restriction to the technical program, described dsp controller is the TMS320F2812 chip.
Compared with prior art, advantage of the present utility model and good effect are: the host computer transmission sampling time of the present utility model is passed to the CPLD counter, the TTL pulse that this CPLD counter comes the outside as limit begins counting, then deposits the counting number in the sampling time in storer.Continue counting and continue storage, until storer is filled with, the capacity of storer arranges by host computer, can be 8k, 16k ..., maximum 256k.After storer was filled with, dsp controller read out, and passed to host computer by serial ports, then was saved as the txt text.The utility model is accurately added up the number of photon, and efficient is high, for the research of light field provides the data foundation.
Description of drawings
Fig. 1 is functional-block diagram of the present utility model.
Fig. 2 is the functional-block diagram of the utility model PCB circuit board.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is done further to describe in detail.
Referring to Fig. 1 and Fig. 2, the utility model comprises host computer, dsp controller, CPLD counter, storer, PCB circuit board, signal input interface, test crystal oscillating circuit and power interface, described host computer connects dsp controller, and described dsp controller connects CPLD counter and storer.
Described host computer is connected with described dsp controller by serial ports.
Described dsp controller, CPLD counter and storer are arranged on the PCB circuit board, also are provided with signal input interface, test crystal oscillating circuit and power interface on described PCB circuit board.
The flow process of photon counting storage is as follows:
The first step: open the host computer serial ports.If the management system of host computer that serial port setting is set in the hurdle is correct, after clicking this button, serial ports is opened, the pilot lamp on side reddens, and illustrates that serial ports is ready, can carry out next step and operate.If it is incorrect that serial port setting is set in the hurdle, reset and get final product.
Second step: the sampling time is set.After clicking this button, the sampling time that user's setting in the hurdle is set is passed to dsp controller by serial ports, after dsp controller is received, to send into the counter of making of CPLD the sampling time, to host computer return message " the clock setting response is correct; the return data verification is correct ", be presented at below pilot lamp simultaneously.After the operator sees this information, can carry out next step and operate.
The 3rd step: begin sampling.After clicking this button, dsp controller is passed in this order, DSP receives the post command counter and begins TTL step-by-step counting that discriminator is sent here, for example the sampling time is set to 5 microseconds, the TTL pulse number write store that counter goes out number in each 5 microsecond is until the full 256K of memory write, at this moment stop counting, and give signal of DSP, can carry out read operation to storer.Then DSP returns to information of host computer " the reset instruction response is correct, and the return data verification is correct ", is presented at below pilot lamp.After the operator sees this information, can carry out next step and operate.
The 4th step: obtain data.After clicking this button, dsp controller is passed in this order, dsp controller is just all read this 256K data, every 4k one page, is transferred to host computer page by page by serial ports by totally 64 pages, be stored in and arrange in the file that in the hurdle, the user sets, return to simultaneously information of host computer " data acquisition instruction response is correct, and the verification of Page x return data is correct ", be presented at below pilot lamp.So far, once complete sampling task just is through with.(annotate: the x in Page x can change along with the page number that transmits, and from 1 to 64; All do the data verification for every page, guarantee that transmission is correct.)
Certainly; above-mentioned explanation is not limitation of the utility model; the utility model also is not limited only to above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also belong to protection domain of the present utility model.
Claims (4)
1. a photon counting storage system, comprise host computer, it is characterized in that: described host computer connects dsp controller, and described dsp controller connects CPLD counter and storer.
2. photon counting storage system according to claim 1, it is characterized in that: described host computer is connected with described dsp controller by serial ports.
3. photon counting storage system according to claim 1, it is characterized in that: described dsp controller, CPLD counter and storer are arranged on the PCB circuit board, also are provided with signal input interface, test crystal oscillating circuit and power interface on described PCB circuit board.
4. photon counting storage system according to claim 1, it is characterized in that: described dsp controller is the TMS320F2812 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019121 CN203012411U (en) | 2013-01-15 | 2013-01-15 | A photon counting storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019121 CN203012411U (en) | 2013-01-15 | 2013-01-15 | A photon counting storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203012411U true CN203012411U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320019121 Expired - Fee Related CN203012411U (en) | 2013-01-15 | 2013-01-15 | A photon counting storage system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203012411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449516A (en) * | 2017-07-06 | 2017-12-08 | 东南大学 | The photon counting linear array reading circuit and method of a kind of self-adaptive detection pattern |
| CN108760725A (en) * | 2018-08-09 | 2018-11-06 | 苏州长光华医生物医学工程有限公司 | Photo Counting System and method suitable for chemiluminescence immunoassay system |
-
2013
- 2013-01-15 CN CN 201320019121 patent/CN203012411U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449516A (en) * | 2017-07-06 | 2017-12-08 | 东南大学 | The photon counting linear array reading circuit and method of a kind of self-adaptive detection pattern |
| CN107449516B (en) * | 2017-07-06 | 2019-07-23 | 东南大学 | A kind of the photon counting linear array reading circuit and method of self-adaptive detection mode |
| CN108760725A (en) * | 2018-08-09 | 2018-11-06 | 苏州长光华医生物医学工程有限公司 | Photo Counting System and method suitable for chemiluminescence immunoassay system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20150115 |
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| EXPY | Termination of patent right or utility model |