CN219142955U - Self-adaptive gate frequency measuring equipment - Google Patents
Self-adaptive gate frequency measuring equipment Download PDFInfo
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- CN219142955U CN219142955U CN202223503545.3U CN202223503545U CN219142955U CN 219142955 U CN219142955 U CN 219142955U CN 202223503545 U CN202223503545 U CN 202223503545U CN 219142955 U CN219142955 U CN 219142955U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides self-adaptive gate frequency measuring equipment, and relates to the field of instrument gates. The device comprises a frequency measuring plate, a control device, an instrument gate and a signal input end, wherein the signal input end is connected with a frequency detection plate, the frequency measuring plate is connected with the control device, and the control device is connected with the instrument gate. According to the utility model, the system timer is arranged in the FPGA, the original periodic signal is compared with the detected frequency signal, and the original periodic signal is changed according to the detected frequency signal, so that a new period matched with the frequency signal is obtained, and the self-adaptive gate period is realized, so that the frequency measurement equipment is faster and more miniaturized.
Description
Technical Field
The utility model relates to the field of instrument gates, in particular to self-adaptive gate frequency measuring equipment.
Background
In electronic measurement, frequency is one of the most basic measurement quantities, and the method which is widely adopted at present is an equal-precision frequency measurement method (multi-period synchronous measurement method) and has the characteristics of high measurement precision and no change of the measurement precision along with the change of a measured signal.
The traditional frequency measurement method comprises a Zhou Fa measurement method and a counting method, wherein the Zhou Fa measurement method is suitable for low-frequency signals, the lower the frequency is, the higher the measurement relative precision is, but the response speed is low, the counting method is suitable for high-frequency signals, the higher the frequency is, the higher the measurement relative precision is, and in order to solve the problems of measurement precision and response speed, a multi-period synchronous frequency measurement method is developed, which is a method for counting signals to be measured and standard signals simultaneously in a specified signal period, and solving the frequency of the signals to be measured according to the count values of the signals to be measured and the standard signals.
The prior art frequency meter needs to adjust the gate or the range to meet the test requirement when measuring different frequency objects, is inconvenient to operate, can easily influence the measurement precision after adjusting the gate or the range, can easily cause false triggering, and is low in reliability.
Disclosure of Invention
The utility model aims to provide the self-adaptive gate frequency measuring equipment so as to solve the problems that the prior art frequency meter is inconvenient to operate, the measuring precision is easily affected after the gate or the measuring range is adjusted, false triggering is easily caused, and the reliability is low because the gate or the measuring range is required to be adjusted to meet the test requirement when measuring different frequency objects.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the self-adaptive gate frequency measuring device comprises a frequency measuring plate, a control device, an instrument gate and a signal input end, wherein the signal input end is connected with a frequency detecting plate, the frequency measuring plate is connected with the control device, and the control device is connected with the instrument gate.
Preferably, the frequency measuring board comprises a signal shaping module and an FPGA, and the signal shaping module is connected with the FPGA.
Preferably, the signal shaping module is connected with the signal input end, the signal shaping module is connected with the control device, and the FPGA is connected with the control device.
Preferably, the FPGA comprises a frequency division register, a gate generation module, an output value register, a gate counter and a system timer, wherein the frequency division register is connected with the system timer, the system timer is connected with the gate generation module, the gate generation module is connected with the gate timer, and the gate timer is connected with the output value register.
Preferably, the frequency division register is connected with the signal shaping module, and the output numerical value register is connected with the control device.
Preferably, the system timer comprises a counter register and an automatic reload register, and the counter register is connected with the automatic reload register.
Preferably, the counter register is connected with the frequency division register, the counter register is connected with the output numerical value register, and the automatic reload register is connected with the gate generation module.
The utility model has the technical effects and advantages that:
1. by arranging the frequency measuring plate, the control device, the instrument gate and the signal input end, the utility model compares the original periodic signal with the detected frequency signal by arranging the system timer in the FPGA, and changes the original periodic signal according to the detected frequency signal to obtain a new period matched with the frequency signal, thereby realizing the self-adaptive gate period, leading the frequency measuring equipment to be faster and more miniaturized.
2. The signal shaping module is used for sorting signals and removing signals which are retained in the signals and generated by photoelectricity through the arrangement of the frequency measuring plate, the signal shaping module and the FPGA, so that signals which can be accurately analyzed are obtained.
3. Through setting up system timer, counter register, automatic reload register, under the effect of counter register, store the periodic signal of establishing in advance to receive the frequency signal of detecting and contrast, compare the frequency signal of detecting with establishing periodic signal in advance through automatic reload register, and change periodic signal into new periodic signal output according to the frequency signal of detecting, thereby realize the periodic effect of self-adaptation gate.
Drawings
FIG. 1 is a flow chart of an adaptive gate frequency measurement system of the present utility model.
FIG. 2 is a flow chart of the operation cycle of the gate body of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides self-adaptive gate frequency measuring equipment shown in figures 1-2, which comprises a frequency measuring plate, a control device, an instrument gate and a signal input end, wherein the signal input end is connected with a frequency detecting plate, the frequency measuring plate is connected with the control device, and the control device is connected with the instrument gate.
As shown in fig. 1, the frequency measurement board includes a signal shaping module and an FPGA, the signal shaping module is connected with the FPGA, the signal shaping module sorts the signals, and removes the signals that are retained in the signals and generated by photoelectricity, so as to obtain signals that can be accurately analyzed, the signal shaping module is connected with a signal input end, the signal shaping module is connected with a control device, the FPGA is connected with the control device, the signal shaping module inputs the signals into the control device for storage, and inputs the signals into the FPGA for analysis and modification of the initial periodic signals.
As shown in fig. 1, the FPGA includes a frequency division register, a gate generating module, an output value register, a gate counter and a system timer, where the frequency division register is connected with the system timer, the system timer is connected with the gate generating module, the gate generating module is connected with the gate timer, the gate timer is connected with the output value register, compares a frequency signal with a preset periodic signal and changes the frequency signal into a new periodic signal, the gate is controlled by the new periodic signal, the frequency division register is connected with a signal shaping module, the output value register is connected with a control device, and the frequency division register performs frequency division processing on the frequency in the signal shaping module, so that the frequency signal transmitted to the system timer is more accurate.
As shown in fig. 1, the system timer includes a counter register and an automatic reload register, the counter register is connected with the automatic reload register, under the action of the counter register, the preset periodic signal is stored, the detected frequency signal is received and compared, the detected frequency signal is compared with the preset periodic signal through the automatic reload register, and the periodic signal is changed into a new periodic signal according to the detected frequency signal to be output, so that the periodic effect of the adaptive gate is realized, the counter register is connected with a frequency division register, the counter register is connected with an output value register, the automatic reload register is connected with a gate generating module, and the counter register re-registers the new signal period of the output value register, so that the new comparison is performed again after the frequency signal is received next time, and the adaptive change is performed.
The working principle of the utility model is as follows: after the measurement is started, the signals are processed through a signal shaping module according to the frequency signals input by the signal input end, the photoelectric frequency signals and the retention signals are removed, the obtained frequency signals are transmitted to a frequency division register and a system timer, the frequency division register sorts the frequency signals and then transmits the frequency signals to a counter register to be compared with the initial periodic signals, and the compared results are transmitted to an automatic reload register;
when the measurement period is equal to the initial signal period, the instrument gate is directly started, when the measurement period is greater than the initial period, the automatic heavy-load register is increased to the measurement period on the initial period value, the instrument gate is started again, and when the measurement period is less than the initial period, the automatic heavy-load register is reduced to the measurement period on the initial period value, and the instrument gate is started again.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. The utility model provides a self-adaptation gate frequency measurement equipment, includes frequency measurement board, controlling means, instrument gate, signal input part, its characterized in that: the signal input end is connected with the frequency detection plate, the frequency detection plate is connected with the control device, and the control device is connected with the instrument gate.
2. The adaptive sluice frequency measurement device of claim 1, characterized in that: the frequency measuring board comprises a signal shaping module and an FPGA, and the signal shaping module is connected with the FPGA.
3. The adaptive sluice frequency measurement device of claim 2, characterized in that: the signal shaping module is connected with the signal input end, the signal shaping module is connected with the control device, and the FPGA is connected with the control device.
4. The adaptive sluice frequency measurement device of claim 2, characterized in that: the FPGA comprises a frequency division register, a gate generation module, an output numerical value register, a gate counter and a system timer, wherein the frequency division register is connected with the system timer, the system timer is connected with the gate generation module, the gate generation module is connected with the gate timer, and the gate timer is connected with the output numerical value register.
5. The adaptive sluice frequency measurement device of claim 4, characterized in that: the frequency division register is connected with the signal shaping module, and the output numerical value register is connected with the control device.
6. The adaptive sluice frequency measurement device of claim 4, characterized in that: the system timer comprises a counter register and an automatic reload register, wherein the counter register is connected with the automatic reload register.
7. The adaptive sluice frequency measurement device of claim 6, characterized in that: the counter register is connected with the frequency division register, the counter register is connected with the output numerical value register, and the automatic reload register is connected with the gate generation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223503545.3U CN219142955U (en) | 2022-12-28 | 2022-12-28 | Self-adaptive gate frequency measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223503545.3U CN219142955U (en) | 2022-12-28 | 2022-12-28 | Self-adaptive gate frequency measuring equipment |
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| Publication Number | Publication Date |
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| CN219142955U true CN219142955U (en) | 2023-06-06 |
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| CN202223503545.3U Active CN219142955U (en) | 2022-12-28 | 2022-12-28 | Self-adaptive gate frequency measuring equipment |
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- 2022-12-28 CN CN202223503545.3U patent/CN219142955U/en active Active
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