CN112485536A - Pulse signal measuring method and device - Google Patents
Pulse signal measuring method and device Download PDFInfo
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- CN112485536A CN112485536A CN202011272416.0A CN202011272416A CN112485536A CN 112485536 A CN112485536 A CN 112485536A CN 202011272416 A CN202011272416 A CN 202011272416A CN 112485536 A CN112485536 A CN 112485536A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000012360 testing method Methods 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000009532 heart rate measurement Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000691 measurement method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
Abstract
The invention discloses a pulse signal measuring method and a device, wherein the method comprises the steps of collecting an original pulse signal; converting the original pulse signal into parallel data; reconstructing the parallel data into a pulse signal to be detected; and measuring the frequency and the duty ratio of the pulse signal to be measured. According to the invention, the original pulse signal is converted into the parallel data and then reconstructed into the pulse signal to be tested, so that the technical problems that the duty ratio of the pulse signal cannot be measured when the pulse signal is tested in the prior art, the measurement cost is high, the test time is long, and the control calculation is complex are solved, the frequency and the duty ratio of the pulse signal can be measured simultaneously, the measurement cost is reduced, the test time is shortened, and the technical effect of the control calculation is simplified.
Description
Technical Field
The embodiment of the invention relates to the technical field of automatic testing, in particular to a pulse signal measuring method and device.
Background
The existing pulse signal measuring methods mainly comprise two methods, one is to carry out AD (analog-to-digital conversion) sampling on a pulse signal and then carry out digital frequency domain processing; the other is to use frequency conversion technology and combine a reference clock to carry out counting measurement on the pulses.
However, the first method has high measurement cost due to high requirements for the AD conversion device under the condition of high test frequency, and the method cannot measure the duty ratio of the pulse signal; in the second method, in order to achieve higher measurement accuracy, complex control calculation needs to be performed in combination with different test frequencies, so that the test time of the pulse signal is longer, and the usability is poor.
Disclosure of Invention
The invention provides a pulse signal measuring method and a pulse signal measuring device, solves the technical problems that the duty ratio of a pulse signal cannot be measured when the pulse signal is tested in the prior art, the measurement cost is high, the test time is long, and the control calculation is complex, realizes that the frequency and the duty ratio of the pulse signal can be measured simultaneously, reduces the measurement cost, shortens the test time, and simplifies the technical effect of the control calculation.
The embodiment of the invention provides a pulse signal measuring method, which comprises the following steps:
collecting an original pulse signal;
converting the original pulse signal into parallel data;
reconstructing the parallel data into a pulse signal to be detected;
and measuring the frequency and the duty ratio of the pulse signal to be measured.
Further, before the acquiring the raw pulse signal, the method further comprises:
and gating at least one signal path of the original pulse signal.
Further, after the converting the original pulse signal into parallel data, the method further includes:
and caching the parallel data, and reconstructing the pulse signal to be detected through the cached parallel data.
Further, the converting the original pulse signal into parallel data includes:
the original pulse signal is converted to parallel data by a gigabit transceiver.
Further, the measuring the frequency and the duty ratio of the pulse signal to be measured includes:
and counting the pulse period and the duty ratio of the pulse signal to be detected so as to determine the frequency and the duty ratio of the pulse signal to be detected.
The embodiment of the invention also provides a pulse signal measuring device, which comprises:
the interface circuit is used for collecting an original pulse signal;
the conversion unit is used for converting the original pulse signal into parallel data;
the local pulse reconstruction unit is used for reconstructing the parallel data obtained by conversion into a pulse signal to be detected;
and the pulse measuring unit is used for measuring the frequency and the duty ratio of the pulse signal to be measured.
Further, before the interface circuit collects the original pulse signal, the apparatus further comprises:
and the multi-path pulse gating circuit is used for gating at least one path of signal path of the original pulse signal.
Further, after the converting unit converts the original pulse signal into parallel data, the apparatus further includes:
and the data caching unit is used for caching the parallel data so that the local pulse reconstruction unit reconstructs the pulse signal to be detected through the cached parallel data.
Further, the conversion unit is a gigabit transceiver, and the interface circuit is a gigabit transceiver interface circuit.
Further, the pulse measurement unit is specifically configured to:
and counting the pulse period and the duty ratio of the pulse signal to be detected so as to determine the frequency and the duty ratio of the pulse signal to be detected.
The invention discloses a pulse signal measuring method and a device, wherein the method comprises the steps of collecting an original pulse signal; converting the original pulse signal into parallel data; reconstructing the parallel data into a pulse signal to be detected; and measuring the frequency and the duty ratio of the pulse signal to be measured. According to the invention, the original pulse signal is converted into the parallel data and then reconstructed into the pulse signal to be tested, so that the technical problems that the duty ratio of the pulse signal cannot be measured when the pulse signal is tested in the prior art, the measurement cost is high, the test time is long, and the control calculation is complex are solved, the frequency and the duty ratio of the pulse signal can be measured simultaneously, the measurement cost is reduced, the test time is shortened, and the technical effect of the control calculation is simplified.
Drawings
Fig. 1 is a flowchart of a pulse signal measurement method according to an embodiment of the present invention;
FIG. 2 is a flow chart of another pulse signal measurement method provided by the embodiment of the invention;
FIG. 3 is a flow chart of another pulse signal measurement method according to an embodiment of the present invention;
FIG. 4 is a flow chart of another pulse signal measurement method provided by the embodiment of the invention;
FIG. 5 is a flow chart of another pulse signal measurement method according to an embodiment of the present invention;
fig. 6 is a structural diagram of a pulse signal measuring apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that the terms "first", "second", and the like in the description and claims of the present invention and the accompanying drawings are used for distinguishing different objects, and are not used for limiting a specific order. The following embodiments of the present invention may be implemented individually, or in combination with each other, and the embodiments of the present invention are not limited in this respect.
Fig. 1 is a flowchart of a pulse signal measurement method according to an embodiment of the present invention.
As shown in fig. 1, the pulse signal measuring method includes the steps of:
step S101, collecting an original pulse signal;
specifically, the original pulse signal may be collected by the interface circuit, and the collected original pulse signal may be sent to a subsequent processing unit connected to the interface circuit for processing.
Step S102, converting the original pulse signal into parallel data.
Specifically, after the interface circuit collects the original pulse signal, the original pulse signal may be converted into high-speed parallel data by a conversion unit, for example, the conversion unit may be a gigabit transceiver, and the corresponding interface circuit may be a gigabit transceiver interface circuit.
And step S103, reconstructing the parallel data into a pulse signal to be measured.
Exemplarily, taking the conversion unit as a gigabit transceiver as an example, the gigabit transceiver can process high-speed parallel data to obtain the frequency and the duty ratio of an original pulse signal, but the control calculation using the high-speed parallel data is complex, the calculation amount is huge, the test duration is affected, in order to reduce the test time and simplify the control calculation in the test process, the local pulse reconstruction unit is further required to reconstruct the high-speed parallel data into a serial pulse signal, that is, the pulse signal to be tested, and by measuring the reconstructed pulse signal to be tested, the control calculation in the test process can be greatly reduced, and further the test duration is shortened.
And step S104, measuring the frequency and the duty ratio of the pulse signal to be measured.
Optionally, in step S104, the measuring the frequency and the duty ratio of the pulse signal to be measured includes: and carrying out pulse period counting and duty ratio counting on the pulse signal to be detected so as to determine the frequency and the duty ratio of the pulse signal to be detected.
Specifically, after the high-speed parallel data is reconstructed into the pulse signal to be measured, the pulse signal to be measured may be subjected to pulse period counting and duty cycle counting, and the frequency and duty cycle of the pulse signal to be measured may be obtained based on the pulse period counting result and the duty cycle counting result.
The method and the device solve the technical problems that in the prior art, the duty ratio of the pulse signal cannot be measured when the pulse signal is tested, the measurement cost is high, the test time is long, and the control calculation is complex, realize that the frequency and the duty ratio of the pulse signal can be measured simultaneously, reduce the measurement cost, shorten the test time, and simplify the technical effect of the control calculation.
Based on the above technical solution, before collecting the original pulse signal, the pulse signal measurement method further includes: and gating at least one signal path of the original pulse signal.
Fig. 2 is a flowchart of another pulse signal measuring method according to an embodiment of the present invention, and as shown in fig. 2, the pulse signal measuring method according to the embodiment includes the following steps:
step S201 gates at least one signal path of the original pulse signal.
Specifically, the pulse signal measurement method provided by the present application can measure multiple original pulse signals simultaneously, so that before collecting the original pulse signals, the number of the original pulse signals to be measured needs to be determined, and the signal paths of the determined original pulse signals to be measured need to be gated.
Step S202, collecting original pulse signals.
Step S203 converts the original pulse signal into parallel data.
And step S204, reconstructing the parallel data into a pulse signal to be detected.
Step S205, measuring the frequency and duty ratio of the pulse signal to be measured.
The method and the device solve the technical problems that in the prior art, the duty ratio of the pulse signal cannot be measured when the pulse signal is tested, the measurement cost is high, the test time is long, and the control calculation is complex, realize that the frequency and the duty ratio of the pulse signal can be measured simultaneously, reduce the measurement cost, shorten the test time, and simplify the technical effect of the control calculation.
Based on the above technical solution, this embodiment optimizes the conversion of the original pulse signal into parallel data in the above embodiment. Fig. 3 is a flowchart of another pulse signal measuring method according to an embodiment of the present invention, and as shown in fig. 3, the flowchart of the pulse signal measuring method according to the embodiment includes the following steps:
step S301, collecting an original pulse signal.
Step S302, the original pulse signal is converted into parallel data by the gigabit transceiver.
Specifically, the gigabit transceiver can be used for converting the original pulse signal into high-speed parallel data, and the gigabit transceiver is used for converting the original pulse signal.
And step S303, reconstructing the parallel data into a pulse signal to be detected.
Step S304, measuring the frequency and the duty ratio of the pulse signal to be measured.
The method and the device solve the technical problems that in the prior art, the duty ratio of the pulse signal cannot be measured when the pulse signal is tested, the measurement cost is high, the test time is long, and the control calculation is complex, realize that the frequency and the duty ratio of the pulse signal can be measured simultaneously, reduce the measurement cost, shorten the test time, and simplify the technical effect of the control calculation.
Based on the above technical solution, after converting the original pulse signal into parallel data, the pulse signal measuring method further includes: and caching the parallel data, and reconstructing the pulse signal to be detected through the cached parallel data.
Fig. 4 is a flowchart of another pulse signal measuring method according to an embodiment of the present invention, and as shown in fig. 4, the pulse signal measuring method according to the embodiment includes the following steps:
step S401, collecting an original pulse signal.
Step S402, converting the original pulse signal into parallel data.
And S403, caching the parallel data, and reconstructing the pulse signal to be detected through the cached parallel data.
Specifically, after the original pulse signal is converted into high-speed parallel data, the high-speed parallel data is stored in the cache unit, and then the local pulse reconstruction unit reconstructs the serial pulse signal, i.e. the pulse signal to be measured, by using the parallel data stored in the cache unit.
Step S404, measuring the frequency and duty ratio of the pulse signal to be measured.
The method and the device solve the technical problems that in the prior art, the duty ratio of the pulse signal cannot be measured when the pulse signal is tested, the measurement cost is high, the test time is long, and the control calculation is complex, realize that the frequency and the duty ratio of the pulse signal can be measured simultaneously, reduce the measurement cost, shorten the test time, and simplify the technical effect of the control calculation.
The above-mentioned pulse signal measurement method is described below with a specific embodiment.
Fig. 5 is a flowchart of another pulse signal measurement method according to an embodiment of the present invention. Exemplarily, as shown in fig. 5, an original pulse signal is gated.
Step S501, gating a signal path of one path of original pulse signals to be measured;
step S502, collecting an original pulse signal by a gigabit transceiver interface circuit;
step S503, the gigabit transceiver converts the acquired original pulse signals into high-speed parallel data;
step S504, caching the high-speed parallel data;
step S505, the local pulse reconstruction unit reconstructs the high-speed parallel data into a serial pulse signal by using the cached high-speed parallel data, namely the pulse signal to be detected;
and step S56, performing pulse period counting and duty ratio counting on the reconstructed pulse signal to be detected, and finally determining the frequency and the duty ratio of the pulse signal to be detected based on the pulse period counting result and the duty ratio counting result.
The method and the device solve the technical problems that in the prior art, the duty ratio of the pulse signal cannot be measured when the pulse signal is tested, the measurement cost is high, the test time is long, and the control calculation is complex, realize the simultaneous measurement of the frequency and the duty ratio of the pulse signal, and have the technical effects of low measurement cost, short test time and simple control calculation.
The embodiment of the present invention further provides a pulse signal measuring apparatus, where the pulse signal measuring apparatus is used to execute the pulse signal measuring method provided in the foregoing embodiment of the present invention, and the pulse signal measuring apparatus provided in the embodiment of the present invention is specifically described below.
Fig. 6 is a structural diagram of a pulse signal measuring device according to an embodiment of the present invention, and as shown in fig. 6, the pulse signal measuring device mainly includes: interface circuit 61, conversion unit 62, local pulse reconstruction unit 63 and pulse measurement unit 64, wherein:
an interface circuit 61 for collecting an original pulse signal;
a conversion unit 62 for converting the original pulse signal into parallel data;
a local pulse reconstruction unit 63, configured to reconstruct the converted parallel data into a pulse signal to be detected;
and the pulse measuring unit 64 is used for measuring the frequency and the duty ratio of the pulse signal to be measured.
The technical problems that the duty ratio of the pulse signal cannot be measured when the pulse signal is tested, the measurement cost is high, the test time is long, and the control calculation is complex in the prior art are solved by converting the original pulse signal into the parallel data and then reconstructing the parallel data into the pulse signal to be tested, the frequency and the duty ratio of the pulse signal can be measured simultaneously, and the technical effects of low measurement cost, short test time and simple control calculation
Optionally, before the interface circuit 61 collects the original pulse signal, the pulse signal measuring apparatus further includes:
and the multi-path pulse gating circuit is used for gating at least one path of signal path of the original pulse signal.
Specifically, the pulse signal measuring device may measure multiple paths of original pulse signals at the same time, and therefore before the interface circuit 61 collects the original pulse signals, a signal path of the original pulse signal to be measured needs to be gated through the multiple paths of pulse gating circuits, and the gated signal path may be one path or multiple paths as needed.
Optionally, after the converting unit 62 converts the original pulse signal into parallel data, the pulse signal measuring apparatus further includes:
and the data caching unit is used for caching the parallel data so that the local pulse reconstruction unit reconstructs the pulse signal to be detected through the cached parallel data.
Specifically, after the conversion unit 62 converts the original pulse signal into high-speed parallel data, the data cache unit stores the high-speed parallel data, and then the local pulse reconstruction unit 63 reconstructs the parallel data stored in the data cache unit into a serial pulse signal, i.e., the pulse signal to be measured.
Alternatively, the conversion unit 62 is a gigabit transceiver and the interface circuit 61 is a gigabit transceiver interface circuit.
Specifically, the conversion unit 62 may be a gigabit transceiver, and correspondingly, the interface circuit 61 is a gigabit transceiver interface circuit; compared with a high-speed ADC (analog-to-digital converter) used in the traditional measurement method, the interface circuit of the used gigabit transceiver is simpler, less hardware interfaces are occupied, a large amount of initialization configuration is not needed, and the use is more convenient.
Optionally, the pulse measurement unit 64 is specifically configured to: and carrying out pulse period counting and duty ratio counting on the pulse signal to be detected so as to determine the frequency and the duty ratio of the pulse signal to be detected.
The device provided by the embodiment of the present invention has the same implementation principle and technical effect as the method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the method embodiments without reference to the device embodiments.
The pulse signal measuring method provided by the embodiment of the invention has the same technical characteristics as the pulse signal measuring device provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method of pulse signal measurement, the method comprising:
collecting an original pulse signal;
converting the original pulse signal into parallel data;
reconstructing the parallel data into a pulse signal to be detected;
and measuring the frequency and the duty ratio of the pulse signal to be measured.
2. The method of claim 1, wherein prior to said acquiring a raw pulse signal, the method further comprises:
and gating at least one signal path of the original pulse signal.
3. The method of claim 1, wherein after converting the original pulse signal into parallel data, the method further comprises:
and caching the parallel data, and reconstructing the pulse signal to be detected through the cached parallel data.
4. The method of claim 1, wherein converting the original pulse signal into parallel data comprises:
the original pulse signal is converted to parallel data by a gigabit transceiver.
5. The method of claim 1, wherein the measuring the frequency and duty cycle of the pulse signal under test comprises:
and counting the pulse period and the duty ratio of the pulse signal to be detected so as to determine the frequency and the duty ratio of the pulse signal to be detected.
6. A pulse signal measuring apparatus, characterized in that the apparatus comprises:
the interface circuit is used for collecting an original pulse signal;
the conversion unit is used for converting the original pulse signal into parallel data;
the local pulse reconstruction unit is used for reconstructing the parallel data obtained by conversion into a pulse signal to be detected;
and the pulse measuring unit is used for measuring the frequency and the duty ratio of the pulse signal to be measured.
7. The apparatus of claim 6, wherein prior to the interface circuit collecting the raw pulse signal, the apparatus further comprises:
and the multi-path pulse gating circuit is used for gating at least one path of signal path of the original pulse signal.
8. The apparatus of claim 6, wherein after the converting unit converts the original pulse signal into parallel data, the apparatus further comprises:
and the data caching unit is used for caching the parallel data so that the local pulse reconstruction unit reconstructs the pulse signal to be detected through the cached parallel data.
9. The apparatus of claim 6, wherein the conversion unit is a gigabit transceiver and the interface circuit is a gigabit transceiver interface circuit.
10. The apparatus according to claim 6, wherein the pulse measurement unit is specifically configured to:
and counting the pulse period and the duty ratio of the pulse signal to be detected so as to determine the frequency and the duty ratio of the pulse signal to be detected.
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