CN104967792A - Event based sensing array reading device and event based sensing array reading method - Google Patents
Event based sensing array reading device and event based sensing array reading method Download PDFInfo
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Abstract
The invention relates to an event based sensing array reading device and an event based sensing array reading method. The event based sensing array reading device comprises a plurality of sensing units distributed in an array mode, a row controller connected with the sensing array and a data receiver, wherein the sensing unit receives a physical variable, and the sensing units sends an output signal and a request signal when the physical variable meets an event threshold; the row controller is used for carrying out address compilation on the request signal and outputs an address signal; and the data receiver is used for receiving and storing output data of the sensing unit, and the output data comprises the output signal and the address signal. According to the invention, the sensing units only output data meeting the threshold, thereby directly filtering redundant data, being capable of greatly reducing the amount of data generated by the sensing array, acquiring effective data more effectively, improving the data acquisition speed and the data transmission speed, and reducing the operation consumption of subsequent data processing.
Description
Technical field
The present invention relates to sensor technical field, particularly relate to a kind of reading device and read method thereof of the sensor array based on event.
Background technology
Be filled with various product with sensor array and equipment in the modern life, common as, imageing sensor, temperature sensor, pressure sensor, sonic transducer, ultrasonic sensor, infrared sensor etc.In the prior art, the reading manner of sensor array almost all adopts the reading manner based on frame frequency.So-called " based on frame frequency ", namely in the control system of these products and equipment, sensor array accurately controls the frequency of all sensing unit records in array, reading and output by a clock.In a frame frequency cycle, control system completes record to sensing units all in sensor array, reading, and the data of all sensing units of synchronism output.
For the imageing sensor in video camera, imageing sensor of the prior art generally adopts CCD or CMOS photosensitive array.In a frame frequency cycle of image sensor system, the data of all photosensitive units under system log (SYSLOG), and all data that synchronism output recorded in this frame frequency cycle, namely the view data of gained forms a so-called frame picture.Namely final video data is made up of continuous print frame picture, the frame number included by video per second and frame frequency.
Although be widely used in all kinds of sensor array based on the reading manner of frame frequency, but also there is its limitation in this reading manner.Such as, although can data of all sensing units in record array more simply based on the recording mode of frame frequency, when, sensing unit quantity comparatively large in the dimension of sensor array is more, then the shortcoming that data volume is large, power consumption is high and processing speed is slow can be caused.Further, when the situation that effective signal is more sparse, the recording mode based on frame frequency then can record data useless in a large number.In addition, because the data of sensing unit each in array can by record repeatedly, and when these sensing units do not have valid data or these sensing units data and in unchanged situation, recording mode based on frame frequency then can produce the data of great quantities of spare, the power consumption of waste calculation process consumption and system.In some sensor field, frame frequency size can limit the data bandwidth of each sensing unit, makes the transducer based on frame frequency usually have certain technical difficulty reaching in wide dynamic range, high frame frequency and high resolution.
Summary of the invention
The object of the invention is to, a kind of reading device and read method thereof of the sensor array based on event is provided, solve large, the inefficient shortcoming of power consumption caused based on the reading manner of frame frequency of the sensor array of prior art.
For solving the problems of the technologies described above, the reading device of the sensor array based on event provided by the invention, comprising:
Several sensing units of array distribution, described sensing unit receives physical quantity, and when described physical quantity meets event threshold, described sensing unit sends output signal and a request signal;
The line control unit be connected with described sensor array, described line control unit is used for carrying out address compilation to described request signal, and OPADD signal;
Data sink, described data sink is for receiving and storing the output data of described sensing unit, and described output data comprise described output signal and described address signal.
Further, described sensing unit comprises transducer, the output signal whether event arbiter of arrival event discrimination threshold, row request trigger and reset flip-flop for judging described transducer.
Further, described transducer is pressure sensor, sonic transducer, ultrasonic sensor, infrared sensor, imageing sensor or temperature sensor; The judgement type of described event arbiter is one or more in the data type of described output signal, the numerical values recited of described output signal, described output signal and the contrast true and false of predetermined threshold value and the time domain difference of described output signal.
Further, described sensing unit comprises sonic transducer, second-order low-pass filter and differential amplifier, and described second-order low-pass filter and described differential amplifier are used for carrying out filtering and amplification to the reception of described sonic transducer and the frequency of sound wave of output.
Further, described line control unit comprises row address compiler and row request validator, and described reading device also comprises row controller, and described row controller comprises column address compiler and row request validator.
Further, described reading device also comprises data source, described data source comprises data compiler and data transmission requests processor, described data compiler comprises analog to digital converter and logic functional block, described output signal compiles by described data compiler, and described address signal and described output signal is carried out the described output data of packing formation.
Accordingly, the present invention also provides the read method of the above-mentioned sensor array reading device based on event, comprises the steps:
Described sensing unit receives described physical quantity, and when described physical quantity meets event threshold, described sensing unit sends an output signal, and exports described request signal to described line control unit;
Described line control unit carries out address compilation to described request signal, and obtains the described address signal of described sensing unit;
Described output signal and the packing of described address signal are formed described output data, and described output data are sent to described data sink.
Further, described sensing unit comprises transducer, event arbiter, row request trigger, row request trigger and reset flip-flop; Described line control unit comprises row address compiler and row request validator, and described reading device also comprises row controller, and described row controller comprises column address compiler and row request validator; Described reading device also comprises data source, and described data source comprises data compiler and data transmission requests processor; Wherein, described request signal comprises row request signal and row request signal; The concrete steps of described read method comprise:
Described transducer receives described physical quantity, and described physical quantity is outputted to described event arbiter, if when described event arbiter judges the threshold value that described physical quantity arrival event differentiates, described event arbiter exports an event signal to described row request trigger and described reset flip-flop, described row request trigger is triggered by described event signal, and sends described row request signal to described line control unit;
Described line control unit is triggered by described row request signal, described row address compiler compiles described row request signal, and, described row request validator exports a line confirmation signal to described row request trigger and described reset flip-flop, makes described row request trigger export described row request signal to described row controller, described row controller is triggered by described row request signal, described column address compiler compiles described row request signal, and, described row request validator exports a row confirmation signal to described reset flip-flop, described reset flip-flop is by described event signal, described row confirmation signal and described row confirmation signal trigger and to described event arbiter, described row request trigger and described row request trigger export a reset signal, event signal described in described reset enable signal, described row request signal and described row request signal are reset to disarmed state, and described output signal is sent as an input signal to described data compiler by described event arbiter,
After described data compiler completes the reading of described input signal, export a transfer of data settling signal to described reset flip-flop, make described reset signal to disarmed state.
Further, the concrete steps of described read method also comprise:
Described row address decoder has compiled, and described row request validator exports described row confirmation signal, described row request validator sends a line to described data transmission requests device and confirms the validity signal, and the row address signal of described row address compiler compiling is sent to described data compiler;
Described column address decoder has compiled, and after described column address compiler exports described row confirmation signal, described row request validator confirms the validity signal to described data transmission requests processor one row, and the column address signal of described column address compiler compiling is sent to described data compiler;
Confirm the validity after signal and described row confirm the validity signal when described data transmission requests processor receives described row, described data transmission requests processor sends a data transmission request signal to described data sink, and described data sink sends an instantaneous effective data reception acknowledgement signal to described data transmission requests processor immediately;
Described data transmission request signal is reset to disarmed state by described data reception acknowledgement signal, and make described data transmission requests processor send a data reception acknowledgement useful signal to described line control unit, described row controller and described data compiler, the described output data completing packing are sent to described data sink by described data compiler after receiving described data reception acknowledgement useful signal, and described data reception acknowledgement useful signal also makes described row confirm the validity signal and described row to confirm the validity signal and be reset to disarmed state.
Further, described reading device also comprises row selection control and/or column selection controller, and described row selection control is connected with described line control unit, and described column selection controller is connected with described row controller, wherein, described request signal comprises row request signal and row request signal; After described line control unit receives described row request signal, described line control unit sends row request request signal to row selection control, and, described row selection control sends row request request confirmation signal to described line control unit to corresponding row, and described controller sends corresponding row trigger rows request confirmation signal to described sensing unit after receiving described row request request confirmation signal; The confirmation of described row selection control to described row request request signal is selected, the selection mode of described row selection control is once only confirm a row request signal, once confirm multiple row request signal, once confirm whole row request signal or once only confirm that some preset capable row request signal, and the mode that described row selection control sort to row request signal is the time-sequencing of request signal triggering, the type of trigger event, the numerical values recited of trigger event or default sortord by row; After described row controller receives described row request signal, described row controller sends row request request signal to column selection controller, and, described column selection controller sends out dequeue request request confirmation signal to described row controller to corresponding row, and described controller sends corresponding row trigger rows request confirmation signal to described sensing unit after receiving described row request request confirmation signal; The confirmation of described column selection controller to described row request request signal is selected, the selection mode of described column selection controller is once only confirm a row request signal, once confirm multiple row request signal, once confirm whole row request signal or once only confirm that some preset the row request signal of row, and described column selection controller asks the time-sequencing of triggering, the type of trigger event, the numerical values recited of trigger event or default sortord by row to the mode that row request signal sort.
In the reading device of the sensor array based on event of the present invention and read method thereof, sensing unit receives physical quantity, and when physical quantity meets event threshold, sensing unit sends output signal and a request signal; The line control unit be connected with sensor array respectively and/or row controller, line control unit and row controller are used for carrying out address compilation to request signal, and OPADD signal; Data source, data source receiver address signal, and output signal and address signal are packaged in output data; Data sink, data sink is used for receiving and stores output data.In the present invention, sensing unit directly filters the data not meeting event threshold, only exports the data meeting threshold value, significantly reduce the data volume that sensor array produces, more effective acquisition valid data, improve data acquisition speed and data transmission bauds, and reduce the computing consumption of follow-up data process.
Accompanying drawing explanation
Fig. 1 is the structural representation of sensor array reading device in first embodiment of the invention;
Fig. 2 is the structural representation of sensing unit in first embodiment of the invention;
Fig. 3 is the logic timing figure of middle sensing unit in first embodiment of the invention;
Fig. 4 is the logic timing figure of middle sensor array reading device in first embodiment of the invention;
Fig. 5 is the signal line be communicated with around middle sensing unit in first embodiment of the invention;
Fig. 6 is the structural representation of sensor array reading device in third embodiment of the invention;
Fig. 7 is the logic timing figure of middle sensor array reading device in third embodiment of the invention;
Fig. 8 is the structural representation of sensor array reading device in second embodiment of the invention.
Embodiment
Below by way of with reference to accompanying drawing, the reading device of the disclosed sensor array based on event, the various feature of read method and function are described in detail.In accompanying drawing, unless separately had explanation in context, similar components adopts similarity sign to indicate.System described by this specification, the embodiment of device and method is illustrative rather than definitive thereof object.For those skilled in the art, it is easily understood that disclosed system, some aspect of device and method is configurable and be combined as various multi-form, and all these forms is all within the scope of this specification.
In the present invention, several sensing units of array distribution, sensing unit receives physical quantity, and when physical quantity meets event threshold, sensing unit sends output signal and a request signal; The line control unit be connected with sensor array respectively and/or row controller, line control unit and row controller are used for carrying out address compilation to request signal, and OPADD signal; Data source, data source receiver address signal, and output signal and address signal are packaged in output data; Data sink, data sink is used for receiving and stores output data.In the present invention, sensing unit directly filters the data not meeting event threshold, only exports the data meeting threshold value, significantly reduce the data volume that sensor array produces, more effective acquisition valid data, improve data acquisition speed and data transmission bauds, and reduce the computing consumption of follow-up data process.
Hereafter composition graphs 1-Fig. 8 is specifically described the reading device of the sensor array based on event in the present invention, read method.Wherein, art technology it should be understood that, the reading device of the sensor array in figure and the structure of sensing unit are not according to actual ratio, but the critical component of sensor array reading device and sensing unit and correlation thereof and function are schematically described, the present invention should not as limit.
[the first embodiment]
Shown in figure 1, of the present invention based in sensor array 100 reading device of event, comprise sensor array 100, the line control unit 200 be connected with described sensor array 100, the row controller 300, data source (not shown) and the data sink 500 that are connected with described sensor array 100.Wherein, several sensing units 101 of the capable n row of the m that described sensor array 100 comprises array distribution, described line control unit 200 comprises row address compiler and row request validator, described row controller 300 comprises column address compiler and row request validator, described line control unit 200 and described row controller 300 are respectively used to receive the request signal sent in sensor array 100, and export the signals such as the address signal of corresponding row or column.Described data source is used for the row address of sensing unit 101, column address, output signal etc. compiles, packing, and send it to data sink, described data source comprises data compiler 410 and data transmission requests processor 420, described data transmission requests processor 420 and described line control unit 200, described row controller 300 and described data sink 500 connect, described data compiler 410 and described sensor array 100, described data sink 500 connects, described data compiler comprises analog to digital converter and logic functional block, described sensing unit 101 needs the output data exported to carry out packing compiling by described data compiler 410, described output data comprise the row address of described sensing unit 101, column address, output signal, external system input signal and permutation and combination form thereof.Data sink 500 is for storing output data, and described data sink 500 comprises data sink and data receiver request processor.
Shown in figure 2, described sensing unit 101 comprises transducer 1011, event arbiter 1012, row request trigger 1013, row request trigger 1014 and reset flip-flop 1015.Wherein, transducer 1011, event arbiter 1012, row request trigger 1013, row request trigger 1014 and reset flip-flop 1015 are connected successively, and event arbiter 1012 is also connected with reset flip-flop 1015 respectively with row request trigger 1013.In the present embodiment, transducer 1011 is for receiving outside physical quantity SIG, and described transducer 1011 can be the other forms of transducers such as pressure sensor, sonic transducer, ultrasonic sensor, infrared sensor, imageing sensor or temperature sensor.The output signal SIG_O whether arrival event discrimination threshold of event arbiter 1012 for judging described sensing 1011, and providing an input signal D_R to data compiler 410, the judgement type of described event arbiter 1012 is one or more in the data type of described output signal SIG_O, the numerical values recited of described output signal SIG_O, described output signal SIG_O and the contrast true and false of predetermined threshold value and the time domain difference of described output signal SIG_O.Row request trigger 1013 is for sending row request signal RR to line control unit 200, row request trigger 1014 is for sending row request signal CR to row controller 300, reset flip-flop 1016 is for after the output of sensing unit 101 data, export reset signal RES to event arbiter 1012, request trigger 1013 and row request trigger 1014, and, reset flip-flop 1015 receives the input signal D_A of data coder 410, reset signal RES is reset to invalid.
Be described the sequencing control of sensing unit 101 and reading device below in conjunction with Fig. 3, Fig. 4, the read method of the sensor array reading device based on event in the present embodiment, comprises the steps:
Perform step S1, described transducer 1011 receives physical quantity SIG, and exports described physical quantity signal SIG_O to described event arbiter 1012.Such as, in the present embodiment, be described for pressure sensor, the threshold value of event arbiter 1012 is the data that pressure is greater than zero.That is, not trigger event arbiter 1012 when force value equals zero, this sensing unit 101 does not output signal.
Then, if when described event arbiter 1012 judges the threshold value that described physical quantity signal SIG_O arrival event differentiates, namely when the force value that transducer 1011 detects is greater than zero, described event arbiter 1012 exports an event signal EV to described row request trigger 1013 and described reset flip-flop 1015, described row request trigger 1013 is triggered by described event signal EV, and sends a line request signal RR to described line control unit.
Perform step S2, described row request validator is triggered by described row request signal RR, and export a line confirmation signal RA to described row request trigger 1014 and described reset flip-flop 1015, make described row request trigger 1014 export a row request signal CR to described row controller.Simultaneously, described row address decoder carries out decoding to the row address of this sensing unit 101, after decoding completes, described row request validator sends a line to described data transmission requests device 420 and confirms the validity signal R_A, and the described sensing unit 101 that the decoding of described row address compiler is completed to row address signal R_ADR be sent to described data compiler 410.
Then, described row controller 300 receives described row request signal CR, described row request validator exports a row confirmation signal CA to described reset flip-flop 1015, event signal EV, row request confirmation signal RA and row request confirmation signal CA makes reset flip-flop 1015 be triggered simultaneously, send reset signal RES to event arbiter 1012, request trigger 1013 and row request trigger 1014, make event arbiter 1012, request trigger 1013 and row request trigger 1014 are reset to disarmed state, and, reset signal RES makes the physical quantity signal SIG_O of transducer 1011 by the input signal D_R of event arbiter 1012 as data compiler, and, after described row controller 300 receives row request signal CR, column address compiler carries out decoding to the column address of this sensing unit 101, after decoding completes, described row request validator confirms the validity signal C_A to described data transmission requests processor 420 1 row, and column address signal C_ADR is sent to described data compiler 410 corresponding to the described sensing unit decoding of described column address compiler completed.
Perform step S3, after described data compiler 410 completes the reading of input signal D_R, export a transfer of data settling signal D_A to described reset flip-flop RES, make described reset signal RES to disarmed state.Confirm the validity after signal R_A and described row confirm the validity signal C_A when described data transmission requests processor 420 receives described row, described data transmission requests processor 420 sends a data transmission request signal S_REQ to described data sink 50, and described data sink 500 sends an instantaneous effective data reception acknowledgement signal S_ACK to described data transmission requests processor immediately.Described data transmission request signal S_REQ is reset to disarmed state by described data reception acknowledgement signal S_ACK, and make described data transmission requests processor 420 to described line control unit 200, described row controller 300 and described data compiler 410 send a data reception acknowledgement useful signal S_ACK ', the output data S_DATA completing packing is sent to described data sink 500 by described data compiler 410 after receiving described data reception acknowledgement useful signal S_ACK ', export the row address that data S_DATA comprises this sensing unit 101, column address, output signal and other signals.Described data reception acknowledgement useful signal S_ACK ' also makes described row confirm the validity signal R_A and described row to confirm the validity signal C_A and be reset to disarmed state.Row confirms the validity signal R_A and is reset to disarmed state and further row address signal R_ADR and row confirmation signal RA is reset to disarmed state.Same, row confirm the validity signal C_A and are reset to disarmed state and further column address signal C_ADR and row confirmation signal CA are reset to disarmed state.
The signal line that sensing unit 101 surrounding is communicated with is with reference to shown in figure 5, wherein, row request signal CR and row confirmation signal CA is used jointly by the sensing unit 101 of same row, and row request signal RR, row confirmation signal RA, data transfer signal D_R and transfer of data settling signal D_A are used jointly by the sensing unit 101 of same a line.Row request signal RR is connected with line control unit 200 with row confirmation signal RA, and row request signal CR is connected with row controller 300 with row confirmation signal CA, and data transfer signal D_R is connected with data compiler 410 with transfer of data settling signal D_A.
In the present embodiment, sensing unit repeats above-mentioned steps, continuous output pressure data, thus the pressure data obtaining whole sensor array 100.Further, direct filtering useless data in reading process, the sensing unit data that an output pressure value is greater than zero, thus only export effective data, significantly reduce data volume.In addition, when there is no effective pressure value, not having data and exporting, thus reducing the power consumption of system.
It should be noted that, in the present embodiment, event signal EV, row request signal RR, row request confirmation signal RA, row request signal CR and row request confirmation signal CA all adopt high level effective.But be not limited successively in the present invention, all can also adopt the triggering mode of Low level effective or other equivalent triggering modes in the present invention, this can understand for those skilled in the art.
In the present embodiment; row request trigger 1014 is just triggered when event signal EV and row confirmation signal CA is simultaneously effective; but; in other embodiments of the invention; event signal EV can also be adopted to trigger row request trigger 1014; then, the mode of event signal EV and row request confirmation signal CA trigger rows request trigger 1013 realizes, and this is according within the thought range can protected in the present invention.
[the second embodiment]
Fig. 6 carries out the structural representation of the reading device improved based on Fig. 1 in the first embodiment, with in the first embodiment unlike, the reading device in the present embodiment also comprises row selection control 230 and column selection controller 330.In the present embodiment, sensing unit 101 can be light intensity sensor, when event arbiter 1012 judges that light intensity increases or weakens, to enhancing event be labeled as in the output data of this sensing unit 101 or weaken event, in follow-up data compilation or data store, include this part data marking enhancing event or weaken event.
Shown in figure 7, in the read method of the device of Fig. 6, after described line control unit 200 receives the row request signal RR of sensing unit 101, described line control unit 200 sends row request request signal RR ' to described row selection control 230, row selection control 230 confirms that backward line control unit 200 sends and sends row request request confirmation signal RA ' to corresponding row, then, line control unit 200 is to corresponding row being sent to row request confirmation signal RA.In the present embodiment, row selection control 230 can carry out sequencing selection to the output of the output signal of sensing unit 101 in this row, the selection mode of described row selection control 230 is once only confirm a row request request signal RR ', once confirm multiple row request request signal RR ', once confirm that all row is asked request signal RR ' or once only confirmed that some preset capable row request request signal RR ', the time-sequencing that the mode that described row selection control 230 sorts to row request request signal RR ' asks request signal RR ' to trigger by row, the type of trigger event, the numerical values recited of trigger event or default sortord.
Same, after row request validator exports row confirmation signal RA to row request trigger 101, row request trigger 1014 exports row request signal CR to row controller 300, then row controller 300 sends row request request signal CR ' to column selection controller 330, column selection controller 330 confirms that backward row controller 300 sends the row request request confirmation signal CA ' to corresponding row, then, row controller 300 is to corresponding row being sent to row request confirmation signal CA.Same, in the present embodiment, column selection controller 330 can carry out sequencing selection to the output of the output signal of sensing unit 101 in this row, the selection mode of described column selection controller 330 is once only confirm a row request request signal CR ', once confirm multiple row request request signal CR ', once confirm that all row are asked request signal CR ' or once only confirmed that some preset the row request request signal CR ' of row, the time-sequencing that the mode that described column selection controller 330 sorts to row request request signal CR ' triggers by row request request signal CR ', the type of trigger event, the numerical values recited of trigger event or default sortord.
Be understandable that, other embodiments of the present invention, can only comprise row selection control or column selection controller in reading device, this is the setting carried out as required, and the present invention should not as limit.
In addition, the row of the reading device in the present embodiment confirms the validity signal R_A, row confirm the validity identical with the first embodiment of other timing control signals such as signal C_A, row address signal R_ADR, column address signal C_ADR, data reception acknowledgement useful signal S_ACK ', and therefore not to repeat here.
In the present embodiment, the only sensing unit that changes by force of record infrared sensing array mid-infrared light linear light and change amplitude accordingly, and the sensing unit that preferentially exporting change amplitude is larger and corresponding amplitude.In the present embodiment, reduce response time and the power consumption of system, and can the sparse Infrared data of more effective seizure.For the application such as infrared track, object identification, calculation process speed can be significantly improved, more effectively complete tracking, identify the application of scheduling algorithm.
[the 3rd embodiment]
Fig. 8 is the schematic diagram of the reading device of the sensor array 100 had in the present invention in an embodiment, and in the present embodiment, described reading device comprises sensor array 100, reading device 300 and data sink 500.The sound sensor array that sensor array 100 arranges for 1 row n is described, and sensing unit 101 comprises sonic transducer, second-order low-pass filter, differential amplifier, event arbiter, row request trigger and reset flip-flop.
In the present embodiment, the signal that in i-th sound sensing unit 101, sonic transducer receives is after second-order low-pass filter filtering, and output signal is the input signal of sonic transducer in the i-th+1 sound sensing unit 101.Such as, the second-order low-pass filter of i-th sound sensing unit 101 by frequency be 1010-10 × iHz, namely the 1st sound sensing unit receives original sound data, it is the sound data of 1000Hz second-order low-pass filter process that 2nd sound sensing unit 101 receives through cut-off frequency, 3rd sound sensing unit 101 receives has been the sound data that cut-off frequency is the process of 990Hz second-order low-pass filter, the like, it is the sound data of 10Hz second-order low-pass filter process that the 100th sound sensing unit 101 receives through cut-off frequency.And, output signal after differential amplifier, input signal received by the i-th+1 sound sensing unit 101 is the sound data-signal that frequency is less than 1010-10 × i Hz, the spectral range 10Hz less of a upper sound sensing unit of the input signal received by each sound sensing unit 101.Therefore, the sound data-signal of the input of event arbiter to be frequency be [1000-10i, 1010-10i] Hz bandpass filtering in i-th sound sensing unit 101.The sound data-signal of the input of event arbiter to be frequency be [1000, infinite] scope in 1st sound sensing unit.
In the present embodiment, the effect of event arbiter 1012 differentiates whether the sound data-signal energy of each wave band is greater than an event threshold preset, if be greater than default event threshold, trigger event, if be less than or equal to default event threshold, not trigger event, namely whether the acoustical range that receives of i-th sonic transducer is within the scope of [1000-10i, 1010-10i] Hz.In other sequential control methods in sensing unit 101 and reading device with the first embodiment in similar.Unlike, in the present embodiment, row request trigger 1013 is only comprised in sensing unit 101, therefore, request signal only comprises row request signal RR, only as event arbiter 1012 outgoing event signal EV, i.e. trigger rows request trigger 1013, row request trigger 1013 sends row request signal RR to line control unit 200.Output signal is sent to data sink 500 by sensing unit 101, and row address signal is directly sent to data sink 500 by line control unit 200.
In the present embodiment, acoustical signal can be divided into the independent signal of multiple wave band, and differentiate that the acoustical signal of corresponding wave band exports according to the signal energy of each wave band.In the present embodiment, can effectively filter the signal of input rear process.The wave band of filtering useless, greatly reduces computing consumption like this, reduces rear processing pressure, and significantly improves rear processing speed.
In addition, it will be appreciated by persons skilled in the art that in other embodiments of the present invention, described reading device can also comprise line control unit and/or data source, described sensing unit 101 can comprise row request trigger equally.Sequential control method identical in the first embodiment is adopted to read the data of sensor array 100.This is the setting carried out according to actual needs, and the present invention should not as limit.
In sum, in the reading device of the sensor array based on event provided by the invention and read method thereof, comprising: several sensing units of array distribution, sensing unit receives physical quantity, when physical quantity meets event threshold, sensing unit sends output signal and a request signal; The line control unit be connected with sensor array respectively and/or row controller, line control unit and row controller are used for carrying out address compilation to request signal, and OPADD signal; Data source, data source receiver address signal, and output signal and address signal are packaged in output data; Data sink, data sink is used for receiving and stores output data.In the present invention, sensing unit directly filters the data not meeting event threshold, only exports the data meeting threshold value, significantly reduce the data volume that sensor array produces, more effective acquisition valid data, improve data acquisition speed and data transmission bauds, and reduce the computing consumption of follow-up data process.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1., based on a sensor array reading device for event, it is characterized in that, comprising:
Several sensing units of array distribution, described sensing unit receives physical quantity, and when described physical quantity meets event threshold, described sensing unit sends output signal and a request signal;
The line control unit be connected with described sensor array, described line control unit is used for carrying out address compilation to described request signal, and OPADD signal;
Data sink, described data sink is for receiving and storing the output data of described sensing unit, and described output data comprise described output signal and described address signal.
2. as claimed in claim 1 based on the sensor array reading device of event, it is characterized in that, described sensing unit comprises transducer, the output signal whether event arbiter of arrival event discrimination threshold, row request trigger and reset flip-flop for judging described transducer.
3., as claimed in claim 2 based on the sensor array reading device of event, it is characterized in that, described transducer is pressure sensor, sonic transducer, ultrasonic sensor, infrared sensor, imageing sensor or temperature sensor; The judgement type of described event arbiter is one or more in the data type of described output signal, the numerical values recited of described output signal, described output signal and the contrast true and false of predetermined threshold value and the time domain difference of described output signal.
4. as claimed in claim 1 based on the sensor array reading device of event, it is characterized in that, described sensing unit comprises sonic transducer, second-order low-pass filter and differential amplifier, and described second-order low-pass filter and described differential amplifier are used for carrying out filtering and amplification to the reception of described sonic transducer and the frequency of sound wave of output.
5. as claimed in claim 1 based on the sensor array reading device of event, it is characterized in that, described line control unit comprises row address compiler and row request validator, and described reading device also comprises row controller, and described row controller comprises column address compiler and row request validator.
6. as claimed in claim 1 based on the sensor array reading device of event, it is characterized in that, described reading device also comprises data source, described data source comprises data compiler and data transmission requests processor, described data compiler comprises analog to digital converter and logic functional block, described output signal compiles by described data compiler, and described address signal and described output signal is carried out the described output data of packing formation.
7., as the read method of a kind of sensor array reading device based on event in claim 1 ~ 6 as described in any one, it is characterized in that, comprise the steps:
Described sensing unit receives described physical quantity, and when described physical quantity meets event threshold, described sensing unit sends an output signal, and exports described request signal to described line control unit;
Described line control unit carries out address compilation to described request signal, and obtains the described address signal of described sensing unit;
Described output signal and the packing of described address signal are formed described output data, and described output data are sent to described data sink.
8., as claimed in claim 7 based on the sensor array read method of event, it is characterized in that, described sensing unit comprises transducer, event arbiter, row request trigger, row request trigger and reset flip-flop; Described line control unit comprises row address compiler and row request validator, and described reading device also comprises row controller, and described row controller comprises column address compiler and row request validator; Described reading device also comprises data source, and described data source comprises data compiler and data transmission requests processor; Wherein, described request signal comprises row request signal and row request signal; The concrete steps of described read method comprise:
Described transducer receives described physical quantity, and described physical quantity is outputted to described event arbiter, if when described event arbiter judges the threshold value that described physical quantity arrival event differentiates, described event arbiter exports an event signal to described row request trigger and described reset flip-flop, described row request trigger is triggered by described event signal, and sends described row request signal to described line control unit;
Described line control unit is triggered by described row request signal, described row address compiler compiles described row request signal, and, described row request validator exports a line confirmation signal to described row request trigger and described reset flip-flop, makes described row request trigger export described row request signal to described row controller, described row controller is triggered by described row request signal, described column address compiler compiles described row request signal, and, described row request validator exports a row confirmation signal to described reset flip-flop, described reset flip-flop is by described event signal, described row confirmation signal and described row confirmation signal trigger and to described event arbiter, described row request trigger and described row request trigger export a reset signal, event signal described in described reset enable signal, described row request signal and described row request signal are reset to disarmed state, and described output signal is sent as an input signal to described data compiler by described event arbiter,
After described data compiler completes the reading of described input signal, export a transfer of data settling signal to described reset flip-flop, make described reset signal to disarmed state.
9., as claimed in claim 8 based on the sensor array read method of event, it is characterized in that, the concrete steps of described read method also comprise:
Described row address decoder has compiled, and described row request validator exports described row confirmation signal, described row request validator sends a line to described data transmission requests device and confirms the validity signal, and the row address signal of described row address compiler compiling is sent to described data compiler;
Described column address decoder has compiled, and after described column address compiler exports described row confirmation signal, described row request validator confirms the validity signal to described data transmission requests processor one row, and the column address signal of described column address compiler compiling is sent to described data compiler;
Confirm the validity after signal and described row confirm the validity signal when described data transmission requests processor receives described row, described data transmission requests processor sends a data transmission request signal to described data sink, and described data sink sends an instantaneous effective data reception acknowledgement signal to described data transmission requests processor immediately;
Described data transmission request signal is reset to disarmed state by described data reception acknowledgement signal, and make described data transmission requests processor send a data reception acknowledgement useful signal to described line control unit, described row controller and described data compiler, the described output data completing packing are sent to described data sink by described data compiler after receiving described data reception acknowledgement useful signal, and described data reception acknowledgement useful signal also makes described row confirm the validity signal and described row to confirm the validity signal and be reset to disarmed state.
10. as claimed in claim 7 based on the sensor array read method of event, it is characterized in that, described reading device also comprises row selection control and/or column selection controller, described row selection control is connected with described line control unit, described column selection controller is connected with described row controller, wherein, described request signal comprises row request signal and row request signal; After described line control unit receives described row request signal, described line control unit sends row request request signal to row selection control, and, described row selection control sends row request request confirmation signal to described line control unit to corresponding row, and described controller sends corresponding row trigger rows request confirmation signal to described sensing unit after receiving described row request request confirmation signal; The confirmation of described row selection control to described row request request signal is selected, the selection mode of described row selection control is once only confirm a row request signal, once confirm multiple row request signal, once confirm whole row request signal or once only confirm that some preset capable row request signal, and the mode that described row selection control sort to row request signal is the time-sequencing of request signal triggering, the type of trigger event, the numerical values recited of trigger event or default sortord by row; After described row controller receives described row request signal, described row controller sends row request request signal to column selection controller, and, described column selection controller sends out dequeue request request confirmation signal to described row controller to corresponding row, and described controller sends corresponding row trigger rows request confirmation signal to described sensing unit after receiving described row request request confirmation signal; The confirmation of described column selection controller to described row request request signal is selected, the selection mode of described column selection controller is once only confirm a row request signal, once confirm multiple row request signal, once confirm whole row request signal or once only confirm that some preset the row request signal of row, and described column selection controller asks the time-sequencing of triggering, the type of trigger event, the numerical values recited of trigger event or default sortord by row to the mode that row request signal sort.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106649147A (en) * | 2015-10-30 | 2017-05-10 | 三星电子株式会社 | Storage method and storage device used for storing event signal and image |
| CN108984550A (en) * | 2017-05-31 | 2018-12-11 | 西门子公司 | The methods, devices and systems that the signal instructions of data are determined to mark to data |
| CN111380568A (en) * | 2020-03-06 | 2020-07-07 | 宁波飞芯电子科技有限公司 | Array type sensor and signal output method thereof |
| CN112654844A (en) * | 2018-07-13 | 2021-04-13 | 帝肯贸易股份公司 | Device and method for controlling an optical recognition unit by means of capacitive filling level measurement in a liquid container |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100194956A1 (en) * | 2009-02-05 | 2010-08-05 | The Hong Kong University Of Science And Technology | Apparatus and method for improving dynamic range and linearity of CMOS image sensor |
| CN103139495A (en) * | 2013-02-27 | 2013-06-05 | 天津大学 | Asynchronous pixel array with arbitration time error correction function |
| CN103309432A (en) * | 2012-03-06 | 2013-09-18 | 全视科技有限公司 | Image sensor having a pulsed mode of operation |
-
2015
- 2015-07-02 CN CN201510383356.2A patent/CN104967792A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100194956A1 (en) * | 2009-02-05 | 2010-08-05 | The Hong Kong University Of Science And Technology | Apparatus and method for improving dynamic range and linearity of CMOS image sensor |
| CN103309432A (en) * | 2012-03-06 | 2013-09-18 | 全视科技有限公司 | Image sensor having a pulsed mode of operation |
| CN103139495A (en) * | 2013-02-27 | 2013-06-05 | 天津大学 | Asynchronous pixel array with arbitration time error correction function |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106649147A (en) * | 2015-10-30 | 2017-05-10 | 三星电子株式会社 | Storage method and storage device used for storing event signal and image |
| CN108984550A (en) * | 2017-05-31 | 2018-12-11 | 西门子公司 | The methods, devices and systems that the signal instructions of data are determined to mark to data |
| CN112654844A (en) * | 2018-07-13 | 2021-04-13 | 帝肯贸易股份公司 | Device and method for controlling an optical recognition unit by means of capacitive filling level measurement in a liquid container |
| CN111380568A (en) * | 2020-03-06 | 2020-07-07 | 宁波飞芯电子科技有限公司 | Array type sensor and signal output method thereof |
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