Disclosure of Invention
Aiming at the defects of the prior art, the application aims to improve the measuring range of a testing instrument of a display panel.
To achieve the above object, in a first aspect, the present application provides a method for controlling optical signal acquisition, including:
controlling the first current-integration converting circuit to operate in an integration state during one integration period in the first sampling period, and controlling the second current-integration converting circuit to operate in an integration state during another integration period in the first sampling period;
In one switching period in the first sampling period, controlling the first current integration switching circuit to operate in a switching state, and in the other switching period in the first sampling period, controlling the second current integration switching circuit to operate in a switching state;
The first sampling period comprises two adjacent integration periods and two adjacent conversion periods, the integration periods are located before the conversion periods, the duration of the integration periods is smaller than that of the conversion periods, and the current integration conversion circuit is used for collecting optical signals.
In one possible implementation, the method further includes:
A current sampling result of the first sampling period is determined based on the first current sampling value provided by the first current-integration conversion circuit and the second current sampling value provided by the second current-integration conversion circuit.
In one possible implementation, determining the current sampling result for the first sampling period includes:
And determining a current sampling result by calculating a current sampling mean value based on the first current sampling value and the second current sampling value.
In one possible implementation, the current sample result of the first sampling period includes a first current sample value and a second current sample value.
In one possible implementation, the method further includes:
Judging the magnitude of a photocurrent and a test range corresponding to a second sampling period, wherein the second sampling period comprises a first integral conversion period and a second integral conversion period, the duration of the first integral conversion period is equal to that of the second integral conversion period, a first current integral conversion circuit works in an integral state in the first integral conversion period, a second current integral conversion circuit works in a conversion state, a second current integral conversion circuit works in an integral state in the second integral conversion period, and the first current integral conversion circuit works in the conversion state;
If the photocurrent is greater than or equal to the testing range corresponding to the second sampling period, determining to sample the current by adopting the first sampling period;
And if the photocurrent is smaller than the testing range corresponding to the second sampling period, determining to sample the current by adopting the second sampling period.
In one possible implementation, the method further includes:
And aiming at the periodic optical signals, carrying out current sampling of N rounds, obtaining a current sampling result corresponding to each round, wherein the current sampling of each round adopts a first sampling period, the angles of sampling points of different rounds under a polar coordinate system are different, and the number N of rounds is a positive integer.
In one possible implementation, the method further includes:
The number of rounds N is determined based on the sampling rate and the frequency of the periodic optical signal.
In a second aspect, the present application provides a control device for optical signal acquisition, including:
The first control module is used for controlling the first current integral conversion circuit to work in an integral state in one integral period in the first sampling period and controlling the second current integral conversion circuit to work in an integral state in the other integral period in the first sampling period;
the second control module is used for controlling the first current integration conversion circuit to work in a conversion state in one conversion period in the first sampling period and controlling the second current integration conversion circuit to work in the conversion state in the other conversion period in the first sampling period;
The first sampling period comprises two adjacent integration periods and two adjacent conversion periods, the integration periods are located before the conversion periods, the duration of the integration periods is smaller than that of the conversion periods, and the current integration conversion circuit is used for collecting optical signals.
In a third aspect, the application provides an electronic device comprising at least one memory for storing a program, and at least one processor for executing the program stored in the memory, the processor being adapted to perform the method described in the first aspect or any one of the possible implementations of the first aspect when the program stored in the memory is executed.
In a fourth aspect, the application provides a test apparatus for a display panel, comprising a first current-integration-conversion circuit, a second current-integration-conversion circuit and a controller, the controller applying the method described in the first aspect or any one of the possible implementations of the first aspect.
In general, the above technical solutions conceived by the present application have the following beneficial effects compared with the prior art:
(1) In the non-equidistant sampling mode, the integration period and the conversion period are separated, so that the limitation of the current measurable maximum value to the time required by analog-to-digital conversion can be avoided, the current measurable maximum value can be effectively lifted by shortening the time of the integration period, the range of a testing instrument of the display panel is lifted, and the acquisition of the optical signal of the high-brightness display panel (such as an OLED screen) is supported.
(2) According to the magnitude between the photocurrent and the corresponding test measuring ranges of the second sampling period (equal interval sampling period), the sampling rate and the test measuring range are adjusted in a self-adaptive mode, the sampling rate is reduced to get a wider test measuring range, or the test measuring range is shortened to get a higher sampling rate, and the test flexibility of the instrument can be effectively improved.
(3) The current sampling results corresponding to the sampling points are obtained through current sampling of a plurality of rounds, angles of different sampling points under a polar coordinate system are different, and different sampling points correspond to the optical signals at different moments in one period (period of the optical signals), so that the periodic optical signals with higher frequencies can be completely represented (restored) by utilizing the current sampling results corresponding to the sampling points, and the optical signals can be collected and restored for a high-brightness high-frequency display panel (such as an OLED screen).
Detailed Description
In order to facilitate a clearer understanding of various embodiments of the present application, some relevant background knowledge is first presented as follows.
Generally, in a process of testing a display panel (for example, an OLED screen), firstly, an optical signal of the display panel is converted into a current signal through an optical system and then is converted into a current signal through a photoelectric sensor, and then the photo current is tested, so as to complete the screen test of the display panel. The photocurrent detection analog front-end circuit is based on current integration, and the core circuit is a capacitive transimpedance amplifier (CAPACITIVE TRANS-IMPEDANCE AMPLIFIER, C-TIA).
Fig. 1 is a schematic diagram of optical signal collection by a current integration and conversion circuit according to an embodiment of the present application, as shown in fig. 1, a photoelectric sensor 10 is disposed before the current integration and conversion circuit 20, the photoelectric sensor 10 converts an optical signal into a current signal and inputs the current signal to the current integration and conversion circuit 20, and the current integration and conversion circuit 20 performs integration and conversion on the received current signal.
As shown in fig. 1, the current integration conversion circuit 20 includes an integration switch 21, an integration circuit 22, a conversion switch 23, and a conversion circuit 24. The integrating circuit 22 includes an integrating capacitor 221 and an operational amplifier 222.
The circuit is in both the integrating (int) and converting (conv) states during operation. When in the integrating state, the integrating switch (Sint) is turned on, and the changeover switch (Sconv) is turned off. The photocurrent (I) is integrated with the capacitor (Cint) so that the capacitor voltage is changed, and the relationship among the integration period (Tint), the capacitor voltage variation (Δv), the accumulated charge (Δq) and the photocurrent to be measured is shown in the following formula.
After the integration is completed, the integrating switch is turned off, the converting switch is turned on, and the instrument is changed into a converting state. And the change of the capacitor voltage is measured (converted into a digital signal) through a conversion circuit, and the photocurrent is measured by combining the integration time and the integration capacitance. It should be understood that the conversion states described herein should include capacitive voltage analog to digital conversion (a/D conversion), capacitive discharge Reset (Reset), and standby for the next round of integration (Wait), among other processes.
Fig. 2 is a schematic diagram of optical signal collection through two current integration and conversion circuits according to an embodiment of the present application, where as shown in fig. 2, a current output end of a photoelectric sensor is connected to two current integration and conversion circuits, which are respectively a first current integration and conversion circuit (abbreviated as a path) and a second current integration and conversion circuit (abbreviated as B path).
In order to ensure that continuous measurement of photocurrent can be achieved, the instrument is designed to include two identical structures, an a-path and a B-path, as shown in fig. 2. When the A path works in an integral state, the B path is subjected to voltage conversion, otherwise, when the A path is subjected to voltage conversion, the B path works in a current integral state. This state is referred to as the equally spaced sampling pattern of the instrument.
Fig. 3 is a schematic diagram of a sampling principle of an equidistant sampling mode according to an embodiment of the present application, where a test effect and a control timing of the equidistant sampling mode are shown in fig. 3. P1-P6 are sampling points, and an equally spaced sampling period (i.e., a second sampling period) includes a first integral transition period and a second integral transition period, the two periods being equal in duration. The A-way is operated in an integral state in a first integral conversion period, the B-way is operated in a conversion state in a second integral conversion period, and the A-way is operated in the conversion state.
When the integration capacitance and the reference voltage (maximum integration voltage) are determined, there is an upper limit to the maximum integration charge. In the equally spaced sampling mode, the length of time for the integration process and the conversion process is the same. In the integral conversion process of the current integral conversion circuit, the time required for analog-to-digital conversion is longest. Since the minimum conversion period is limited to the period required for analog-to-digital conversion, the integration period is limited to the conversion period. In the case of maximum integrated charge determination, however, the current measurable maximum depends on the minimum integrated duration, and it is seen that the current measurable maximum (span) in the equally spaced sampling mode is limited by the duration required for analog-to-digital conversion. The specific values are set forth herein with the understanding that the data set forth herein are merely illustrative, and are not intended to limit the application.
Assuming that the integration capacitance Cint is 100pF, the minimum switching duration (equal switching duration Tconv and integration duration Tint in the equally spaced sampling mode) is 400 μs, and the maximum measurable voltage Δvmax is 4V, the maximum charge and maximum current derivation is shown in the following formula. Where Tint,min represents the minimum integration time period and Imax represents the current measurable maximum.
It can be seen that when the brightness of the display panel increases, the photocurrent signal is caused to exceed this limit.
In order to overcome the defects, the application provides a control method, a device, electronic equipment and a test instrument for optical signal acquisition, which are used for separating an integration period from a conversion period in order to ensure that the integration time is not limited by the conversion time, and the integration time is not limited by the conversion time, so that the current measurable maximum value is prevented from being limited by the time required by analog-to-digital conversion. The state is called an unequal interval sampling working mode of the instrument, and the photocurrent testing range can be increased.
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The terms "first" and "second" and the like in the description and in the claims are used for distinguishing between different objects and not for describing a particular sequential order of objects. For example, the first sampling period and the second sampling period, etc., are used to distinguish between different sampling periods, and are not used to describe a particular order of sampling periods.
In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In the description of the embodiments of the present application, unless otherwise specified, the meaning of "plurality" means two or more, for example, a plurality of processing units means two or more processing units and the like, and a plurality of elements means two or more elements and the like.
Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
Fig. 4 is a flow chart of a control method for optical signal acquisition according to an embodiment of the present application, as shown in fig. 4, the method includes the following steps S101 and S102.
In step S101, in one integration period in the first sampling period, the first current integration/conversion circuit is controlled to operate in an integration state (in which the B-way is in a stop operation state, i.e., the integration switch and the conversion switch of the B-way are both turned off), and in another integration period in the first sampling period, the second current integration/conversion circuit is controlled to operate in an integration state (in which the a-way is in a stop operation state, i.e., the integration switch and the conversion switch of the a-way are both turned off).
Step S102, in one switching period in the first sampling period, controlling the first current-integration switching circuit to operate in the switching state, and in another switching period in the first sampling period, controlling the second current-integration switching circuit to operate in the switching state.
The first sampling period includes two adjacent integration periods and two adjacent conversion periods, the integration period is located before the conversion period, the duration of the integration period is smaller than the duration of the conversion period, and the current integration conversion circuit is used for collecting the optical signal (integrating and converting the current corresponding to the optical signal to obtain a current sampling value).
The process of collecting the optical signal by the current integration conversion circuit (the first current integration conversion circuit or the second current integration conversion circuit) comprises the steps of integrating the current corresponding to the optical signal in an integration state to obtain a voltage variation, and carrying out analog-to-digital conversion on the voltage variation in a conversion state to obtain a current sampling value.
The duration of the integration period in the first sampling period is not equal to the duration of the transition period, and the manner in which sampling is performed with the first sampling period may be referred to as a non-equally spaced sampling pattern.
The first sampling period includes two adjacent integration periods and two adjacent transition periods, the two adjacent integration periods being located before the two adjacent transition periods. For two adjacent integration periods, the former integration period may be referred to as a first integration period and the latter integration period may be referred to as a second integration period. For two adjacent transition periods, the former transition period may be referred to as a first transition period and the latter transition period may be referred to as a second transition period.
The first current-integration converting circuit is controlled to operate in an integration state during a first integration period in the first sampling period, and the second current-integration converting circuit is controlled to operate in an integration state during a second integration period in the first sampling period. And further controlling the first current integration conversion circuit to operate in a conversion state in a first conversion period in the first sampling period, and controlling the second current integration conversion circuit to operate in a conversion state in a second conversion period in the first sampling period. After the conversion is completed, a current sampling value provided by the first current integral conversion circuit and a current sampling value provided by the second current integral conversion circuit can be obtained, and the light signal can be acquired by combining the current sampling values provided by the two current integral conversion circuits.
It will be appreciated that in the equally spaced sampling mode, the integration period of one current-integration conversion circuit coincides with the conversion period of another current-integration conversion circuit, the length of time required for the integration process of the current-integration conversion circuit being equal to the length of time required for the conversion process (including the duration of the analog-to-digital conversion) of the current-integration conversion circuit. In the integral conversion process of the current integral conversion circuit, the time required for analog-to-digital conversion is longest. Since the minimum conversion period is limited to the period required for analog-to-digital conversion, the integration period is limited to the conversion period. In the case of maximum integrated charge determination, however, the current measurable maximum depends on the minimum integrated duration, and it is seen that the current measurable maximum (span) in the equally spaced sampling mode is limited by the duration required for analog-to-digital conversion.
The first sampling period provided by the embodiment of the application comprises two adjacent integration periods and two adjacent conversion periods, wherein the integration period is positioned before the conversion period, and the duration of the integration period is smaller than that of the conversion period. In the non-equidistant sampling mode, the integration period and the conversion period are separated, so that the limitation of the current measurable maximum value to the time required by analog-to-digital conversion can be avoided, the current measurable maximum value can be effectively lifted by shortening the time of the integration period, the range of a testing instrument of the display panel is lifted, and the acquisition of the optical signal of the high-brightness display panel (such as an OLED screen) is supported.
In one possible implementation, the method further includes:
A current sampling result of the first sampling period is determined based on the first current sampling value provided by the first current-integration conversion circuit and the second current sampling value provided by the second current-integration conversion circuit.
In one possible implementation manner, the determining the current sampling result of the first sampling period includes:
And determining a current sampling result by calculating a current sampling mean value based on the first current sampling value and the second current sampling value.
It can be appreciated that in this implementation, the current sampling average value of the a path and the B path is taken as the current sampling result of one sampling period. The current sampling result corresponding to one sampling point can be obtained in one sampling period, the sampling point can be an optical signal at a designated time, the designated time can be the ending time of the first integration period or the starting time of the second integration period, the current sampling result is determined by calculating the average value of the two current sampling values, random errors can be reduced, and the accuracy of the current sampling result is improved.
Fig. 5 is a schematic diagram of a sampling principle of a non-equidistant sampling mode according to an embodiment of the present application, as shown in fig. 5, P1 is a sampling point. One non-equally spaced sampling period (i.e., a first sampling period) includes a first integration period, a second integration period, a first transition period, and a second transition period, the duration of the integration period being unequal to the duration of the transition period, and the duration of the integration period being less than the duration of the transition period. As shown in fig. 5, P1 may be an optical signal at a specified time, which may be an end time of the first integration period or a start time of the second integration period, with the current sampling average of the a-way and the B-way as a current sampling result of one sampling period.
In one possible implementation, the current sample result of the first sampling period includes a first current sample value and a second current sample value.
It can be appreciated that in an implementation manner, current sampling values of the path a and the path B are respectively taken as current sampling results. One sampling period can acquire current sampling results corresponding to two sampling points, one sampling point can be an optical signal at the middle time of the first integration period, and the other sampling point can be an optical signal at the middle time of the second integration period.
Fig. 6 is a second schematic diagram of a sampling principle of a non-equidistant sampling mode according to an embodiment of the present application, as shown in fig. 6, P1 and P2 are two sampling points. As shown in fig. 6, with the current sampling values of the a-way and the B-way as the current sampling results, respectively, P1 may be an optical signal at the middle time of the first integration period, and P2 may be an optical signal at the middle time of the second integration period.
In one possible implementation, the method further includes:
Judging the magnitude of a photocurrent (a current sampling result of a last sampling period can be determined as the photocurrent) and a test range corresponding to a second sampling period, wherein the second sampling period comprises a first integral conversion period and a second integral conversion period, the duration of the first integral conversion period is equal to that of the second integral conversion period, a first current integral conversion circuit works in an integral state in the first integral conversion period, a second current integral conversion circuit works in a conversion state, a second current integral conversion circuit works in an integral state in the second integral conversion period, and the first current integral conversion circuit works in the conversion state;
If the photocurrent is greater than or equal to the testing range corresponding to the second sampling period, determining to sample the current by adopting the first sampling period;
And if the photocurrent is smaller than the testing range corresponding to the second sampling period, determining to sample the current by adopting the second sampling period.
It is understood that the second sampling period includes a first integral conversion period in which the first current integral conversion circuit operates in an integral state, and a second integral conversion period in which the second current integral conversion circuit operates in an integral state, and the duration of the integral period of the current integral conversion circuit is equal to the duration of the conversion period of the current integral conversion circuit, and that the sampling mode using the second sampling period may be referred to as an equidistant sampling mode.
As described above, the measurable maximum value (range) of the current in the equidistant sampling mode is limited by the required length of the analog-to-digital conversion, and the current range in the equidistant sampling mode, that is, the test range corresponding to the second sampling period, can be determined according to the required length of the analog-to-digital conversion. The test range corresponding to the first sampling period is wider than the test range corresponding to the second sampling period, and the sampling rate of sampling by the first sampling period is lower than the sampling rate of sampling by the second sampling period.
If the photocurrent is greater than or equal to the test range corresponding to the second sampling period, the test range corresponding to the second sampling period is indicated to be unable to adapt to the current photocurrent, and in this case, it may be determined to sample the current by using the first sampling period.
If the photocurrent is smaller than the test range corresponding to the second sampling period, the test range corresponding to the second sampling period is indicated to be suitable for the current photocurrent, and under the condition, the current is determined to be sampled by adopting the second sampling period, and the higher sampling rate is maintained.
For OLED screen testing, the instrument uses a conventional equally spaced sampling mode to perform OLED signal measurements when the OLED brightness does not exceed the instrument's conventional range. When the OLED brightness exceeds the measuring range of the instrument, the instrument works in a non-equidistant sampling mode by adjusting the control time sequence, and the circuit integration time is smaller than the conversion time limit, so that the measuring range of the instrument is increased. When the frequency of the OLED signal to be detected is higher than the sampling rate of the instrument, current sampling of multiple rounds is adopted, and high-frequency periodic signal restoration is completed based on equivalent time sampling (the sampling result of the multiple rounds can effectively restore the high-frequency periodic signal).
Therefore, according to the magnitude between the photocurrent and the testing range corresponding to the second sampling period, the sampling rate and the testing range can be adjusted in a self-adaptive manner, the sampling rate is reduced to obtain a wider testing range, or the testing range is shortened to obtain a higher sampling rate, so that the testing flexibility of the instrument can be effectively improved.
It is noted that when the instrument is in the non-equally spaced sampling mode, the total sampling period (the sum of the two short time integrations and the two long time transition times) is greater than in the equally spaced sampling mode, and thus the non-equally spaced sampling mode reduces the sampling rate of the instrument. In order to realize that the acquisition and the restoration of the optical signals are supported in the non-equidistant sampling mode, the application also provides a data acquisition and processing method based on equivalent time sampling, which is used for restoring the high-frequency periodic signals through multiple times of testing, wherein the equivalent time sampling means that the sampling result of the multiple times of testing can effectively restore the high-frequency periodic signals. The implementation of the multiple test is described below.
In one possible implementation, the method further includes:
And aiming at the periodic optical signals, carrying out current sampling of N rounds, obtaining a current sampling result corresponding to each round, wherein the current sampling of each round adopts a first sampling period, the angles of sampling points of different rounds under a polar coordinate system are different, and the number N of rounds is a positive integer.
For example, in the case where the frequency of the periodic optical signal is low (for example, the frequency of the periodic optical signal is lower than the sampling rate), if the sampling requirement can be satisfied by 1 cycle of current sampling (the sampling point obtained by one cycle of current sampling can characterize the periodic optical signal), then 1 cycle of current sampling (where n=1) can be performed with the first sampling period, the current sampling process of 1 cycle can be a plurality of consecutive first sampling periods (generally, the total duration of the plurality of first sampling periods is shorter than one period duration of the optical signal), after the plurality of first sampling periods are undergone, current sampling results corresponding to a plurality of sampling points can be obtained, angles of different sampling points in the polar coordinate system are different, and different sampling points correspond to optical signals at different moments in time within one period (period of the optical signal), so that the periodic optical signal with a lower frequency can be more completely characterized (restored) by using the current sampling results corresponding to the plurality of sampling points.
For example, in the case where the frequency of the periodic optical signal is high (for example, the frequency of the periodic optical signal is higher than the sampling rate), if it is difficult to satisfy the sampling requirement by 1 round of current sampling (the sampling point obtained by one round of current sampling is difficult to completely characterize the periodic optical signal), then the current sampling of multiple rounds may be performed with the first sampling period (where N > 1), the current sampling process of 1 round may be one first sampling period or multiple continuous first sampling periods, and the angles of the sampling points of different rounds are controlled to be different in the polar coordinate system (repeated sampling is avoided between different rounds), after the current sampling of multiple rounds is performed, the current sampling results corresponding to the multiple sampling points may be obtained, and the angles of the different sampling points in the polar coordinate system are different, and the different sampling points correspond to the optical signals at different times within one period (the period of the optical signal).
To ensure that the angles of the sampling points of different rounds under the polar coordinate system are different, the current sampling of the next round may be restarted after a specified delay has elapsed after the current sampling of one round has ended.
Fig. 7 is a schematic diagram of a sampling principle of multiple current sampling according to an embodiment of the present application, and as shown in fig. 7, P1-P6 are 6 sampling points. Taking three rounds of data acquisition as an example, a process of realizing high-frequency periodic signal restoration by adjusting a control clock is described. For conventional photocurrent signals, the data information of P1-P6 in fig. 7 can be collected directly using an equally spaced sampling pattern. When the photocurrent is greater than the test range of the equally spaced sampling mode, the instrument enters the non-equally spaced sampling mode, as shown in fig. 7. Taking the average value of the test results of the A path and the B path as the measured value of the sampling point (taking the average value of the current sampling of the A path and the B path as the current sampling result of one sampling period), one round can collect P1 and P4, and so on, the second round of collection P2 and P5, the third round of collection P3 and P6, and completing the data test of 6 sampling points through three rounds of collection.
Fig. 8 is a second schematic diagram of a sampling principle of multiple current sampling according to an embodiment of the present application, and as shown in fig. 8, P1-P12 are 12 sampling points. Taking three rounds of data acquisition as an example, a process of realizing high-frequency periodic signal restoration by adjusting a control clock is described. For conventional photocurrent signals, the data information of P1-P12 in fig. 8 can be collected directly using an equally spaced sampling pattern. When the photocurrent is greater than the test range of the equally spaced sampling mode, the instrument enters the non-equally spaced sampling mode, as shown in fig. 8. Taking the A path and the B path as independent test results (taking current sampling values of the A path and the B path as current sampling results respectively), one round of acquisition can be performed on P1, P2, P7 and P8, and so on, the second round of acquisition P3, P4, P9 and P10, the third round of acquisition P5, P6, P11 and P12, and the data test of 12 sampling points is realized through three rounds of acquisition.
In one possible implementation, the method further includes:
The number of rounds N is determined based on the sampling rate and the frequency of the periodic optical signal.
The sampling rate is described herein, and the number of samples (sampling points) that can be collected per second, i.e., the sampling rate, can be analyzed based on a sampling period (e.g., the first sampling period or the second sampling period referred to herein).
Illustratively, the product between K and the sampling rate may be calculated based on a preset scaling factor K (0<K. Ltoreq.1), and the magnitude between the product and the frequency of the periodic optical signal may be compared. If the product is greater than or equal to the frequency of the periodic optical signal, this indicates that the frequency of the periodic optical signal is low, in which case n=1 may be set. If the product is smaller than the frequency of the periodic optical signal, this indicates that the frequency of the periodic optical signal is higher, in which case N >1 may be set. Further, if the product is smaller than the frequency of the periodic optical signal, the frequency of the periodic optical signal may be divided by the sampling rate to obtain a ratio therebetween, N is determined according to the ratio, and the larger the ratio is, the larger the value of N is, and the smaller the ratio is, the smaller the value of N is.
Therefore, the control method for optical signal acquisition provided by the embodiment of the application can realize the increase of the instrument range by adjusting the control time sequence under the condition of no device change, and can complete the high-frequency periodic signal restoration based on equivalent time sampling by adopting multiple-time acquisition when the frequency of the optical signal to be detected is higher than the sampling rate of the instrument.
The following describes the optical signal acquisition control device provided by the present application, and the optical signal acquisition control device described below and the optical signal acquisition control method described above may be referred to correspondingly.
Fig. 9 is a schematic structural diagram of a control device for optical signal acquisition according to an embodiment of the present application, and as shown in fig. 9, the device includes a first control module 30 and a second control module 40. Wherein:
A first control module 30, configured to control the first current integration conversion circuit to operate in an integration state during one integration period in the first sampling period, and to control the second current integration conversion circuit to operate in an integration state during another integration period in the first sampling period;
a second control module 40, configured to control the first current integration switching circuit to operate in a switching state during one switching period in the first sampling period, and control the second current integration switching circuit to operate in a switching state during another switching period in the first sampling period;
The first sampling period comprises two adjacent integration periods and two adjacent conversion periods, the integration periods are located before the conversion periods, the duration of the integration periods is smaller than that of the conversion periods, and the current integration conversion circuit is used for collecting optical signals.
It should be understood that the detailed functional implementation of each unit/module may be referred to the description of the foregoing method embodiment, and will not be repeated herein.
It should be understood that, the foregoing apparatus is used to perform the method in the foregoing embodiment, and corresponding program modules in the apparatus implement principles and technical effects similar to those described in the foregoing method, and reference may be made to corresponding processes in the foregoing method for the working process of the apparatus, which are not repeated herein.
Based on the method in the foregoing embodiment, fig. 10 is a schematic structural diagram of an electronic device according to the embodiment of the present application, and as shown in fig. 10, the electronic device may include a Processor 810, a communication interface (Communications Interface) 820, a Memory 830, and a communication bus 840, where the Processor 810, the communication interface 820, and the Memory 830 complete communication with each other through the communication bus 840. The processor 810 may invoke logic instructions in the memory 830 to perform the methods of the embodiments described above.
Further, the logic instructions in the memory 830 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application.
Based on the method in the above embodiment, the embodiment of the present application provides a computer-readable storage medium storing a computer program, which when executed on a processor, causes the processor to perform the method in the above embodiment.
Based on the method in the above embodiments, an embodiment of the present application provides a computer program product, which when run on a processor causes the processor to perform the method in the above embodiments.
It is to be appreciated that the Processor in embodiments of the application may be a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field programmable gate array (Field Programmable GATE ARRAY, FPGA), or other programmable logic device, transistor logic device, hardware component, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.
The steps of the method in the embodiment of the present application may be implemented by hardware, or may be implemented by executing software instructions by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access Memory (Random Access Memory, RAM), flash Memory, read-only Memory (ROM), programmable ROM (PROM), erasable Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted across a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (Solid STATE DISK, SSD)), etc.
It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the application and is not intended to limit the application, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.