Photon counter based on programmable logic

A photon counter and programming logic technology, applied in the direction of counting mechanisms/items, instruments, etc., can solve problems such as use restrictions, achieve the effect of matching, increasing counting values, and improving accuracy

Active Publication Date: 2007-03-21
丹东百特仪器有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The above-mentioned counters are mainly implemented by means of hardware circuits. When targeting some specific systems, the use will be subject to certain restrictions.

Method used

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  • Photon counter based on programmable logic
  • Photon counter based on programmable logic
  • Photon counter based on programmable logic

Examples

Experimental program
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Embodiment Construction

[0045] Pulse signal output after screening

[0046] Figure 6 is a diagram of the electrical pulse signal output from the pulse discrimination circuit PHOTOM1. This signal is combined with the same PHOTON2 signal in the PLD to obtain a reshaped pulse signal with a peak value of +5V, which is input to the photon counting circuit for counting. .

[0047] Example of time setting for counting gate control circuit

[0048] The working process of the counting gate control circuit is as follows: Assuming that the external CPU sets or modifies the counting time, the modified data is first latched by 7477, and then input to the LPM-COUNTER input terminal after two shift operations. According to the external clock (256Hz), LPM-COUNTER counts automatically. When the count overflows, the circuit will automatically load the counting time, then the time of the counting gate will automatically count continuously. And continuously output the storeout timing control signal.

[0049] Shown fr...

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PUM

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Abstract

A photon counter bases on program logic for photoelectric information in faintness photoelectric information dispose technology. It relates to impulse amplify circuit, impulse discriminate circuit, impulse plastic circuit, controlling circuit for counting door and photoelectric counting circuit. The circuit of amplify, discriminate and plastic realize the magnifying of faintness photoelectric current, the identifying of impulse signal and the plastic of wave and realize the join with the hardware circuit of program logic (PLD). Its character is that PLD realizes the design of photons counting circuit and controlling circuit for counting door. The photons counting circuit uses for photons counting, numerical value lock and store and output, and the controlling circuit for counting door controls the counting time of photons counting circuit and its counting time is adjustable, automatically recorded into set time and repeated to count time.

Description

technical field [0001] The invention relates to a photon information counting device in the technology of processing weak photoelectric information, in particular to a photon counter based on programmable logic. Background technique [0002] At present, the photon counters used in the weak optical signal processing technology mainly include the 1109 photon counter of EG&G, the 1190 type of Princeton in the United States, and the C5410 series of desktop counters in Hamamatsu, Japan; there are also computer-based platforms that use interface Technology (such as PCI, ISA bus), realize photon counting through hardware interface card and computer software. Such as the M7824 and M8503 photon counting boards of Hamamatsu Corporation in Japan. [0003] The above-mentioned counters are mainly implemented by means of hardware circuits, and when targeting some specific systems, their use will be subject to certain restrictions. For example, the time control of the counting gate, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06M1/272
Inventor 邱健杨冠玲何振江
Owner 丹东百特仪器有限公司
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