CN111953338A - Real-time low-power-consumption integrated nuclear signal forming counting circuit - Google Patents
Real-time low-power-consumption integrated nuclear signal forming counting circuit Download PDFInfo
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- CN111953338A CN111953338A CN202010940390.6A CN202010940390A CN111953338A CN 111953338 A CN111953338 A CN 111953338A CN 202010940390 A CN202010940390 A CN 202010940390A CN 111953338 A CN111953338 A CN 111953338A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K21/00—Details of pulse counters or frequency dividers
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
Abstract
The invention discloses a real-time low-power-consumption integrated nuclear signal forming counting circuit, which comprises a detector, an integrated counting chip, a CPU (central processing unit) and a power module, wherein the integrated counting chip is connected with the CPU; a threshold value is arranged in the integrated counting chip, and when the height of the nuclear pulse signal output by the detector is greater than the threshold value, the integrated counting chip counts the nuclear pulse signal; the CPU is used for reading the record value of the integrated counting chip and outputting the record value to the outside; the power module is used for supplying power to the detector, the integrated counting chip and the CPU. The invention aims to provide a real-time low-power-consumption integrated nuclear signal forming counting circuit, which uses an integrated counting chip to replace a traditional circuit built by using a separating device to realize the counting of nuclear pulse signals, thereby avoiding the problems of high maintenance difficulty and incapability of counting pulses output by a plurality of detectors simultaneously caused by adopting a separating device.
Description
Technical Field
The invention relates to the technical field of nuclear industry, in particular to a real-time low-power-consumption integrated nuclear signal forming counting circuit.
Background
At present, a common nuclear pulse counting circuit is mainly used for amplifying nuclear pulses by a pulse amplifying circuit built by a separation element and then counting the pulses by using a comparator. Although this method can realize the statistics of the number of pulses, there are several disadvantages:
1. when the equipment goes wrong, the trouble of searching the problem is solved, and the repairing difficulty is high;
2. when the pulse is processed, two-stage or three-stage amplification is needed, so that the power consumption is increased;
3. pulses cannot be counted simultaneously for multiple detectors.
Disclosure of Invention
The invention aims to provide a real-time low-power-consumption integrated nuclear signal forming counting circuit, which uses an integrated counting chip to replace a traditional circuit built by using a separating device to realize the counting of nuclear pulse signals, thereby avoiding the problems of high maintenance difficulty and incapability of counting pulses output by a plurality of detectors simultaneously caused by adopting a separating device.
The invention is realized by the following technical scheme:
a real-time low-power consumption integrated nuclear signal forming counting circuit comprises a detector, an integrated counting chip, a CPU and a power module;
a threshold value is arranged in the integrated counting chip, and when the height of the nuclear pulse signal output by the detector is greater than the threshold value, the integrated counting chip counts the nuclear pulse signal;
the CPU is used for reading the record value of the integrated counting chip and outputting the record value to the outside;
the power supply module is used for supplying power to the detector, the integrated counting chip and the CPU;
when the device works, the detector outputs a nuclear pulse signal to the integrated counting chip, and the integrated counting chip compares the nuclear pulse signal with a threshold value after receiving the nuclear pulse signal; if the height of the nuclear pulse signal is larger than the threshold value, the integrated counting chip counts the nuclear pulse signal; and after reading the recorded value of the integrated counting chip at equal intervals, the CPU outputs the recorded value to the outside and clears the recorded value of the integrated counting chip.
Preferably, the detector further comprises a capacitor C11, and the capacitor C11 is arranged between the detector and the integrated counting chip;
when the nuclear pulse signal output by the detector is transmitted to the capacitor C11, the capacitor C11 filters the high-voltage signal in the nuclear pulse signal and transmits the nuclear pulse signal to the integrated counting chip.
Preferably, the power supply module comprises a first power supply module and a second power supply module;
the first power supply module is used for supplying power to the integrated counting chip and the CPU;
the second power module is used for supplying power to the detector.
Preferably, the integrated counting chip comprises a reference power supply branch and a working power supply branch;
the reference power supply branch circuit is used for providing reference voltage for the integrated counting chip and comprises an inductor L1 and a capacitor C1, and the inductor L1 and the capacitor C1 are connected in series and then are connected between the first power supply module and the integrated counting chip;
the working power supply branch circuit is used for providing working voltage for the integrated counting chip and comprises an inductor L6, and the inductor L6 is connected between the first power supply module and the integrated counting chip in series.
Preferably, the counting circuit further comprises a bias voltage branch, wherein the bias voltage branch comprises a capacitor C4, a capacitor C5 and a capacitor C6, one end of each of the capacitor C4, the capacitor C5 and the capacitor C6 is connected with ground, and the other end of each of the capacitor C4, the capacitor C5 and the capacitor C6 is connected with the integrated counting chip.
Preferably, the detector further comprises an inductor L2 and a resistor R10, and the inductor L2 and the resistor R10 are connected in series and then are arranged between the second power supply module and the detector.
Preferably, the integrated counter further comprises a second filter, a capacitor C17 and a capacitor C12, wherein the capacitor C17, the second filter and the capacitor C12 are sequentially connected in series and then are arranged between the resistor R10 and the integrated counter chip.
Preferably, the integrated counter further comprises a third filter, a capacitor C16 and a capacitor C13, wherein the capacitor C16, the third filter and the capacitor C13 are sequentially connected in series and then are arranged between the capacitor C17 and the integrated counter chip.
Preferably, the CPU is a 430 single chip microcomputer.
Preferably, the power supply module further includes a power supply adjusting module, the power supply adjusting module is configured to adjust a voltage of the second power supply module, and a method of the power supply adjusting module adjusting the voltage of the second power supply module is as follows:
acquiring the actual voltage of the second power supply module;
acquiring a difference value between a target voltage value of the second power supply module and an actual voltage of the second power supply module;
if the difference is greater than the threshold or less than 0, the power supply adjusting module adjusts the voltage of the second power supply module until the difference is less than or equal to the threshold and greater than or equal to 0.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the integrated counting chip is adopted to replace the traditional separation circuit, so that the size of the analog circuit can be effectively reduced, and the maintainability of the circuit is improved;
2. the integrated counting chip is adopted to count the pulse signals, so that pulse counting can be simultaneously carried out on a plurality of detectors;
3. the integrated counting chip and the 430 micro CPU are adopted to work together, so that the conversion of the working mode and the reduction of the power consumption can be realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a block diagram of a counting pulse circuit according to the present invention;
FIG. 2 is a schematic diagram of a counting pulse circuit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
A real-time low-power consumption integrated nuclear signal forming counting circuit is shown in figure 1 and comprises a detector, an integrated counting chip, a CPU and a power module;
a threshold value is arranged in the integrated counting chip, and when the height of the nuclear pulse signal output by the detector is greater than the threshold value, the integrated counting chip counts the nuclear pulse signal; in this embodiment, the integrated counting chip includes a counter, a threshold value in the counter is set by the CPU, and the operation mode of the integrated counting chip can be turned on or off according to actual needs.
The main work of the CPU is to communicate externally, set the threshold value of the integrated counting chip, control the working mode, control the high voltage and the like; in this embodiment, the CPU is set as a 430 single chip microcomputer, the 430 single chip microcomputer integrates modules such as an AD, a DA, and a communication port, and the CPU of the 430 single chip microcomputer has several working modes with different power consumptions, so that the working modes can be switched anytime and anywhere, thereby effectively reducing the power consumption. Meanwhile, the 430 single chip microcomputer is used as a control chip, the working state of the equipment can be set, and the whole circuit is in a non-working state or a semi-working state under the condition of nonuse, so that the overall power consumption can be further reduced.
And the power supply module is used for supplying power to the detector, the integrated counting chip and the CPU.
Under the normal working mode, the CPU is in the low power consumption mode, only the detector and the integrated counting chip work, and the power consumption is reduced from the peripheral level. The specific working process is as follows: the nuclear pulse signal output by the detector is input into an integrated counting chip, and the integrated counting chip judges whether the nuclear pulse signal is effective or not according to a threshold value; when the nuclear pulse signal is effective, adding 1 to a counter in the integrated counting chip; the counter is not processed when the core pulse signal is inactive. The CPU is awakened once every 1S, after the CPU is awakened, the count value in the integrated counting chip is read and emptied, and the read count value is transmitted to the upper computer through a serial port or other communication modes.
Further, in order to extract an effective nuclear pulse signal, a high-voltage-resistant capacitor C11 is further arranged between the detector and the integrated counting chip, as shown in fig. 2, during operation, the nuclear pulse signal output by the detector is transmitted to the capacitor C11, and the capacitor C11 filters the high-voltage signal in the nuclear pulse signal, so that the effective nuclear pulse signal is obtained, and the effective nuclear pulse signal is transmitted to the integrated counting chip for technology, so that the technical result of the integrated technology chip is more accurate.
Further, in this embodiment, in order to provide a more stable and appropriate voltage to the detector, the integrated counter chip, and the CPU, the power module is configured as a first power module and a second power module;
in this embodiment, the first power module generates two power sources, 1 power source 12V and one power source 3V, wherein the 12V power source is supplied to the second power module, and the 3V power source is supplied to the integrated counting chip and the CPU. Since the integrated counting chip operates at a low voltage, the final pulse count becomes unreliable if the power supply ripple is too large. Therefore, in order to ensure the stability of the system and also perform filtering processing on the power supply of the CPU, in this embodiment, the inductor L1, the inductor L4, the inductor L5 and the inductor L6 are used to perform ripple processing on the 3V power supply and then input the processed power supply to the integrated counting chip and the CPU, as shown in fig. 2.
The second power supply module is used for supplying power for normal operation of the detector, wherein the inductor L2 and the resistor R10 jointly form a filter, and the filter is used for filtering high-voltage ripples and then supplying the high-voltage ripples to the detector 1, as shown in fig. 2.
Further, in order to make the voltage value output by the second power supply equal to or close to the target voltage value, in this embodiment, the power supply module is further provided with a power supply adjusting module, and the power supply adjusting module is configured to dynamically adjust the voltage value output by the second power supply, specifically as follows:
the CPU is preset with a target voltage value output by the second power supply module, acquires an actual voltage value output by the second power supply module in real time, performs difference comparison according to the target voltage value and the actual voltage value, indicates that the high voltage output by the second power supply module is low when the difference is greater than 3V, adjusts the second power supply module to increase the high voltage through the power supply adjusting module, and performs difference comparison until the difference is less than 3V; when the difference is negative, the CPU adjusts the second-stage power supply module to reduce high voltage through adjusting the power supply adjusting module, and then difference comparison is carried out until the difference is smaller than 3V.
Further, in this embodiment, the integrated counting chip includes a reference power branch and a working power branch.
The reference power supply branch circuit is used for providing reference voltage for the integrated counting chip and comprises an inductor L1 and a capacitor C1, and the inductor L1 and the capacitor C1 are connected in series and then are connected between the first power supply module and the integrated counting chip;
and the working power supply branch circuit is used for providing working voltage for the integrated counting chip and comprises an inductor L6, and an inductor L6 is connected between the first power supply module and the integrated counting chip in series.
Further, in order to provide the bias voltage to the channel, in the present embodiment, a bias voltage branch is further provided. The bias voltage branch comprises a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C4, one ends of a capacitor C5 and a capacitor C6 are all connected with the ground, and the other ends of a capacitor C4, a capacitor C5 and a capacitor C6 are all connected with the integrated counting chip.
Example 2
In this embodiment, a second filter and a third filter are further provided on the basis of embodiment 1, and as shown in fig. 2, the capacitor C17, the second filter and the capacitor C12 are sequentially connected in series and then are provided between the resistor R10 and the integrated counting chip.
The capacitor C16, the third filter and the capacitor C13 are sequentially connected in series and then are arranged between the capacitor C17 and the integrated counting chip.
The capacitor C12 and the capacitor C13 have the same functions as the capacitor C11 and are used for filtering high-voltage signals in the nuclear pulse signals; the capacitor C17 and the capacitor C16 are used for isolating output signals of the first filter, the second filter and the third filter, and therefore cross-channel connection is avoided, and inaccurate counting is caused.
In this embodiment, a second filter and a third filter are further provided, so that pulses output by the three detectors can be counted simultaneously. It is worth explaining that the number of the detectors can be set according to actual conditions, and this embodiment is only used for illustration. Compared with a circuit built by using a separating device (only one detector can be counted), the working efficiency is effectively improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A real-time low-power consumption integrated nuclear signal forming counting circuit comprises a detector, and is characterized by also comprising an integrated counting chip, a CPU (central processing unit) and a power module;
a threshold value is arranged in the integrated counting chip, and when the height of the nuclear pulse signal output by the detector is greater than the threshold value, the integrated counting chip counts the nuclear pulse signal;
the CPU is used for reading the record value of the integrated counting chip and outputting the record value to the outside;
the power supply module is used for supplying power to the detector, the integrated counting chip and the CPU;
when the device works, the detector outputs a nuclear pulse signal to the integrated counting chip, and the integrated counting chip compares the nuclear pulse signal with a threshold value after receiving the nuclear pulse signal; if the height of the nuclear pulse signal is larger than the threshold value, the integrated counting chip counts the nuclear pulse signal; and after reading the recorded value of the integrated counting chip at equal intervals, the CPU outputs the recorded value to the outside and clears the recorded value of the integrated counting chip.
2. The real-time low-power integrated nuclear signal shaping counting circuit of claim 1, further comprising a capacitor C11, wherein the capacitor C11 is disposed between the detector and the integrated counting chip;
when the nuclear pulse signal output by the detector is transmitted to the capacitor C11, the capacitor C11 filters the high-voltage signal in the nuclear pulse signal and transmits the nuclear pulse signal to the integrated counting chip.
3. The real-time low-power-consumption integrated core signal shaping counting circuit according to claim 1 or 2, wherein the power supply module comprises a first power supply module and a second power supply module;
the first power supply module is used for supplying power to the integrated counting chip and the CPU;
the second power module is used for supplying power to the detector.
4. The real-time low-power integrated nuclear signal shaping counting circuit of claim 3, wherein the integrated counting chip comprises a reference power supply branch and a working power supply branch;
the reference power supply branch circuit is used for providing reference voltage for the integrated counting chip and comprises an inductor L1 and a capacitor C1, and the inductor L1 and the capacitor C1 are connected in series and then are connected between the first power supply module and the integrated counting chip;
the working power supply branch circuit is used for providing working voltage for the integrated counting chip and comprises an inductor L6, and the inductor L6 is connected between the first power supply module and the integrated counting chip in series.
5. The real-time low-power-consumption integrated core signal shaping counting circuit according to claim 4, further comprising a bias voltage branch, wherein the bias voltage branch comprises a capacitor C4, a capacitor C5 and a capacitor C6, one end of each of the capacitor C4, the capacitor C5 and the capacitor C6 is connected with ground, and the other end of each of the capacitor C4, the capacitor C5 and the capacitor C6 is connected with the integrated counting chip.
6. The real-time low-power integrated nuclear signal shaping counting circuit of claim 5, further comprising an inductor L2 and a resistor R10, wherein the inductor L2 and the resistor R10 are connected in series and then disposed between the second power module and the detector.
7. The real-time low-power integrated core signal shaping counting circuit of claim 6, further comprising a second filter, a capacitor C17 and a capacitor C12, wherein the capacitor C17, the second filter and the capacitor C12 are sequentially connected in series and then disposed between the resistor R10 and the integrated counting chip.
8. The real-time low-power integrated core signal shaping counting circuit of claim 7, further comprising a third filter, a capacitor C16 and a capacitor C13, wherein the capacitor C16, the third filter and the capacitor C13 are sequentially connected in series and then disposed between the capacitor C17 and the integrated counting chip.
9. The real-time low-power integrated core signal shaping and counting circuit of claim 8, wherein the CPU is a 430-chip microcomputer.
10. The real-time low-power integrated core signal shaping counting circuit of claim 9, wherein the power module further comprises a power regulation module, the power regulation module is configured to regulate a voltage of the second power module, and the method for the power regulation module to regulate the voltage of the second power module is as follows:
acquiring the actual voltage of the second power supply module;
acquiring a difference value between a target voltage value of the second power supply module and an actual voltage of the second power supply module;
if the difference is greater than the threshold or less than 0, the power supply adjusting module adjusts the voltage of the second power supply module until the difference is less than or equal to the threshold and greater than or equal to 0.
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| CN202010940390.6A CN111953338A (en) | 2020-09-09 | 2020-09-09 | Real-time low-power-consumption integrated nuclear signal forming counting circuit |
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