CN103701436B - A kind of generation method of outer synchronous triggering signal and the equipment of generation - Google Patents
A kind of generation method of outer synchronous triggering signal and the equipment of generation Download PDFInfo
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- CN103701436B CN103701436B CN201210370267.0A CN201210370267A CN103701436B CN 103701436 B CN103701436 B CN 103701436B CN 201210370267 A CN201210370267 A CN 201210370267A CN 103701436 B CN103701436 B CN 103701436B
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Abstract
The invention discloses a kind of generation method and generation equipment of outer synchronous triggering signal, the generation equipment of described outer synchronous triggering signal comprises for generating period square-wave signal, and using the triggering signal generation module of described periodic square wave signal as the outer synchronous triggering signal generated, and, initial time for the edge of periodic square wave signal generated triggering signal generation module adjusts, and the periodic square wave signal after adjustment is carried out as outer synchronous triggering signal the triggering signal adjusting module that exports.By technical scheme of the present invention, can needed for external circuits the feature of outer synchronous triggering signal, the time delay of the initial outer synchronous triggering signal extracted is adjusted, solve the time delay that cannot adjust outer synchronous triggering signal in prior art thus cause the outer synchronous triggering signal that generates and the triggering signal needed for external circuits and inconsistent, causing the problem that synchronous effect is not good.
Description
Technical field
The present invention relates to signal controlling technical field, particularly relate to a kind of generation method and generation equipment of outer synchronous triggering signal.
Background technology
At present; in electronic security field; when utilizing the watch-dogs such as video camera to carry out the shooting of the images such as video, due to by the impact of civil power, often can there is the light source such as light, display and to become clear with civil power cyclic variation generating period the phenomenon of change in the region that is taken.Simultaneously, interval between the every frame of video captured by the watch-dogs such as video camera is produced by internal clocking, and the cycle of civil power also can change because of the difference of load, make the interval between the every frame of the video captured by the watch-dogs such as video camera often asynchronous with the cycle of the light source adopting alternating current, cause in video, occurring flickering light emitting source or subject, reduce picture display effect.
In order to solve the watch-dogs such as above-mentioned video camera and the nonsynchronous problem of civil power, under making the watch-dogs such as video camera can be applied in the higher monitoring environment of monitoring index or image being had to the environment of coherence request, as preventing road monitoring system, banking system etc. for traffic lights, prior art often adopts following methods to realize the synchronous of the watch-dogs such as video camera and civil power:
Adopt the outer synchronous triggering signal circuit be made up of photoelectrical coupler etc., pulse signal is extracted from the ac supply signals such as the civil power received, namely the start trigger signal in each cycle of the ac supply signals such as civil power is obtained, and using the pulse signal that the extracts outer synchronous triggering signal as watch-dogs such as follow-up video cameras; The operation principle of described outer synchronous triggering signal circuit is: when ac supply signal is in positive half period, photoelectrical coupler conducting, outer synchronous triggering signal circuit output low level signal, when ac supply signal is in negative half-cycle, photoelectrical coupler not conducting, outer synchronous triggering signal circuit exports high level signal.
When adopting said method to realize the watch-dogs such as video camera and civil power synchronous, although the interval of the every frame of the video captured by the watch-dogs such as video camera can be made consistent with the cycle of civil power, but the adjustment of the time delay of outer synchronous triggering signal is not carried out due to described outer synchronous trigger circuit, thus cause the outer synchronous triggering signal that generates and triggering signal needed for external circuits and inconsistent, cause light emitting source or subject etc. may occur bright or excessively dark situation, synchronous effect is not good.
Summary of the invention
Embodiments provide a kind of generation method and generation equipment of outer synchronous triggering signal, in order to solve the time delay that cannot adjust outer synchronous triggering signal existed in prior art thus the problem causing synchronous effect not good.
A generation equipment for outer synchronous triggering signal, the generation equipment of described outer synchronous triggering signal comprises triggering signal generation module and triggering signal adjusting module, wherein:
Described triggering signal generation module, for generating period square-wave signal, and using described periodic square wave signal as the outer synchronous triggering signal generated;
Described triggering signal adjusting module, the initial time for the edge of periodic square wave signal generated triggering signal generation module adjusts, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal.
Utilize the generation equipment of above-mentioned outer synchronous triggering signal to generate a method for outer synchronous triggering signal, described method comprises:
Utilize triggering signal generation module generating period square-wave signal, and using described periodic square wave signal as the outer synchronous triggering signal generated;
Utilize the initial time of triggering signal adjusting module to the edge of the periodic square wave signal that triggering signal generation module generates to adjust, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal.
Beneficial effect of the present invention is as follows:
Embodiments provide a kind of generation method and apparatus of outer synchronous triggering signal, the generation equipment of described outer synchronous triggering signal comprises triggering signal generation module and triggering signal adjusting module, wherein, described triggering signal generation module is used for generating period square-wave signal, and using described periodic square wave signal as the outer synchronous triggering signal generated, described triggering signal adjusting module is used for adjusting the initial time at the edge of the periodic square wave signal that triggering signal generation module generates, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal.By technical scheme of the present invention, can needed for external circuits the feature of outer synchronous triggering signal, the time delay of the initial outer synchronous triggering signal extracted is adjusted, solve the time delay that cannot adjust outer synchronous triggering signal in prior art thus cause the outer synchronous triggering signal that generates and the triggering signal needed for external circuits and inconsistent, causing the problem that synchronous effect is not good.
Accompanying drawing explanation
Figure 1 shows that the structural representation of the generation equipment of outer synchronous triggering signal described in the embodiment of the present invention one;
Figure 2 shows that the structural representation of the generation equipment of outer synchronous triggering signal described in the embodiment of the present invention two;
Figure 3 shows that the concrete structure schematic diagram of triggering signal generation module described in the embodiment of the present invention two;
Figure 4 shows that the concrete structure schematic diagram of the first adjustment submodule described in the embodiment of the present invention two;
Figure 5 shows that the concrete structure schematic diagram of the second adjustment submodule described in the embodiment of the present invention two;
Figure 6 shows that the concrete structure schematic diagram of the module of triggering signal negate described in the embodiment of the present invention two;
Figure 7 shows that the signal waveform transition diagram of each module in the generation equipment of outer synchronous triggering signal described in the embodiment of the present invention two;
Figure 8 shows that the method flow schematic diagram generating outer synchronous triggering signal described in the embodiment of the present invention three.
Embodiment
Below in conjunction with Figure of description, embodiments of the present invention is further illustrated, but the present invention is not limited to the following examples.
Embodiment one:
As shown in Figure 1, it is the structural representation one of the generation equipment of outer synchronous triggering signal described in the embodiment of the present invention one, and the generation equipment of described outer synchronous triggering signal comprises triggering signal generation module 11 and triggering signal adjusting module 12, wherein:
Described triggering signal generation module 11 for generating period square-wave signal, and using described periodic square wave signal as generate outer synchronous triggering signal; Particularly, described triggering signal generation module 11 for converting the ac supply signal received to the periodic square wave signal consistent with described ac supply signal sequential, and using described periodic square wave signal as generate outer synchronous triggering signal; Further, described ac supply signal can be the ac supply signals such as 24V, 48V or 220V, and the embodiment of the present invention is not limited in any way this.
Described triggering signal adjusting module 12 adjusts for the initial time at the edge of periodic square wave signal generated triggering signal generation module 11, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal.
Particularly, described triggering signal adjusting module 12 is converted to the periodic analogue signal with the frequency of described periodic square wave signal and all consistent monotone increasing of initial time for the periodic square wave signal generated by triggering signal generation module 11, and described periodic analogue signal is carried out comparing of magnitude of voltage with the threshold voltage signal of setting, and, according to comparative result, described periodic analogue signal is converted to periodic square wave signal, and the periodic square wave signal after conversion is exported as the outer synchronous triggering signal after adjustment, wherein, this change after the initial time at edge of periodic square wave signal (being the periodic square wave signal after the adjustment) magnitude of voltage that is described periodic analogue signal equal time of the magnitude of voltage of the threshold voltage signal of described setting, further, the threshold voltage signal of described setting is the analog signal that the CPU etc. of external circuits or external device is produced by digital to analog converter, and its size can set according to actual conditions, and the embodiment of the present invention is not limited in any way this.
Further, described triggering signal adjusting module 12 comprises the first adjustment submodule 121 and the second adjustment submodule 122, wherein:
Described first adjustment submodule 121 is converted to the periodic analogue signal with the frequency of described periodic square wave signal and all consistent monotone increasing of initial time for the periodic square wave signal exported by triggering signal generation module 11, and described periodic analogue signal is input to the second adjustment submodule 122, described second adjustment submodule 122 is for carrying out the comparing of magnitude of voltage from the first adjustment periodic analogue signal of submodule 121 with the threshold voltage signal of setting by what receive, and according to comparative result, described periodic analogue signal is converted to periodic square wave signal, and the periodic square wave signal after conversion is exported as the outer synchronous triggering signal after adjustment, wherein, the magnitude of voltage that the initial time at edge of the periodic square wave signal after what the second adjustment submodule 122 exported change is described periodic analogue signal equals the time of the magnitude of voltage of the threshold voltage signal of described setting.
Particularly, when the magnitude of voltage of the periodic analogue signal that the first adjustment submodule 121 exports is less than the magnitude of voltage of the threshold voltage signal of setting, the second adjustment submodule 122 output low level signal; When the magnitude of voltage of the periodic analogue signal that the first adjustment submodule 121 exports is more than or equal to the magnitude of voltage of the threshold voltage signal of setting, the second adjustment submodule 122 exports high level signal.In addition, the magnitude of voltage that the initial time at the edge of the periodic square wave signal after described second conversion that exports of adjustment submodule 122 is the periodic analogue signal that the first adjustment submodule 121 exports equals the moment of the magnitude of voltage of the threshold voltage signal set.
More preferably, described outer synchronous triggering signal circuit also comprises triggering signal negate module 13:
Described triggering signal negate module 13 carries out inversion operation for the outer synchronous triggering signal exported triggering signal adjusting module 12, thus realizes the objects such as the conversion of different output and input level, increase driving force, the requirement of cooperation back-end circuit collection CPU samples edges; It should be noted that, if the signal that described triggering signal adjusting module 12 exports enough meets the needs of back-end circuit, then can not use described triggering signal negate module 13, the present invention is not limited in any way this.
It should be noted that, each comprising modules in the generation equipment of outer synchronous triggering signal described in the embodiment of the present invention and the generation equipment of described outer synchronous triggering signal can adopt the method for software and/or hardware to realize, namely the embodiment of the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect, and the embodiment of the present invention is not limited in any way this.
The embodiment of the present invention one provides a kind of generation equipment of outer synchronous triggering signal, the generation equipment of described outer synchronous triggering signal comprises triggering signal generation module and triggering signal adjusting module, wherein, described triggering signal generation module is used for generating period square-wave signal, and using described periodic square wave signal as the outer synchronous triggering signal generated; Described triggering signal adjusting module is used for adjusting the initial time at the edge of the periodic square wave signal that triggering signal generation module generates, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal.By technical scheme described in the embodiment of the present invention one, can needed for external circuits the feature of outer synchronous triggering signal, the time delay of the initial outer synchronous triggering signal extracted is adjusted (initial time at the edge of initial outer synchronous triggering signal adjusts), solve the time delay that cannot adjust outer synchronous triggering signal in prior art thus cause the outer synchronous triggering signal that generates and the triggering signal needed for external circuits and inconsistent, causing the problem that synchronous effect is not good.
Embodiment two:
The embodiment of the present invention two is the detailed descriptions carried out the generation equipment of outer synchronous triggering signal described in the embodiment of the present invention one, described in the embodiment of the present invention two, each module of the generation equipment of outer synchronous triggering signal mainly adopts the form of hardware circuit to realize, but it should be noted that, the mode that the generation equipment of outer synchronous triggering signal described in the embodiment of the present invention and its each module comprised can also adopt software or software restraint to combine realizes, and the embodiment of the present invention is not limited in any way this.
As shown in Figure 2, it is the structural representation of the generation equipment of outer synchronous triggering signal described in the embodiment of the present invention two, and the generation equipment of described outer synchronous triggering signal comprises triggering signal generation module 11 and triggering signal adjusting module 12, wherein:
Described triggering signal generation module 11 for generating period square-wave signal, and using described periodic square wave signal as generate outer synchronous triggering signal; Particularly, described triggering signal generation module 11 for converting the ac supply signal received to the periodic square wave signal consistent with described ac supply signal sequential, and using described periodic square wave signal as generate outer synchronous triggering signal; Further, described ac supply signal can be the ac supply signals such as 24V, 48V or 220V, and the embodiment of the present invention is not limited in any way this.
Particularly, as shown in Figure 2 or Figure 3 (Fig. 3 is the concrete structure schematic diagram of triggering signal generation module 11 described in the embodiment of the present invention two), described triggering signal generation module 11 comprises photoelectrical coupler U1, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4 and the first electric capacity C1, wherein:
1st pin of described photoelectrical coupler U1 is connected with AC power (AC power shown in Fig. 2 or Fig. 3 is 24V AC power: AC24V) through the second resistance R2, the first resistance R1 successively, be connected to 2nd pin and common mode, 3rd pin ground connection, as the output of triggering signal extraction module 11 after 4th pin is connected with the 4th resistance R4, and the 4th pin is also connected with positive source (positive source shown in Fig. 2 or Fig. 3 is VCC) by the 3rd resistance R3; Described first electric capacity C1 is in parallel with the series circuit that the second resistance R2, photoelectrical coupler U1 form, wherein, 1st pin of described photoelectrical coupler is the anode of the interior light emitting diodes of described photoelectrical coupler, 2nd pin is the negative electrode of the interior light emitting diodes of described photoelectrical coupler, 3rd pin is the emitter of the inside phototriode of described photoelectrical coupler, and the 4th pin is the collector electrode of the inside phototriode of described photoelectrical coupler.
The operation principle of described triggering signal generation module 11 is: by inputting the ac supply signal (and/or common mode ground) of 24V or other magnitude of voltage sizes to photoelectrical coupler U1, utilize the forward conduction characteristic of photoelectrical coupler U1, extract the periodic square wave signal consistent with described ac supply signal sequential; Particularly, when ac supply signal is in positive half period, photoelectrical coupler U1 conducting, triggering signal generation module 11 output low level signal (size of described low level signal is 0), when ac supply signal is in negative half-cycle, photoelectrical coupler U1 not conducting, be in open-circuit condition, triggering signal generation module 11 exports high level signal (size of described high level signal is equal with the voltage of positive source, is VCC).
It should be noted that, the combination of electronic devices and components or electronic devices and components that described triggering signal generation module 11 can also can convert the ac supply signal received to the periodic square wave signal consistent with described ac supply signal sequential by other realizes, and the embodiment of the present invention is not limited in any way this.
Described triggering signal adjusting module 12 adjusts for the initial time at the edge of periodic square wave signal generated triggering signal generation module 11, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal, particularly, described triggering signal adjusting module 12 is converted to the periodic analogue signal with the frequency of described periodic square wave signal and all consistent monotone increasing of initial time for the periodic square wave signal generated by triggering signal generation module 11, and described periodic analogue signal is carried out comparing of magnitude of voltage with the threshold voltage signal of setting, and, according to comparative result, described periodic analogue signal is converted to periodic square wave signal, and the periodic square wave signal after conversion is exported as outer synchronous triggering signal, wherein, this change after the initial time at edge of the periodic square wave signal magnitude of voltage that is described periodic analogue signal equal time of the magnitude of voltage of the threshold voltage signal of described setting, further, the threshold voltage signal of described setting is the analog signal that the CPU etc. of external circuits or external device is produced by digital to analog converter, and its size can set according to actual conditions, and the embodiment of the present invention is not limited in any way this.
Further, described triggering signal adjusting module 12 comprises the first adjustment submodule 121 and the second adjustment submodule 122, wherein:
Described first adjustment submodule 121 is converted to the periodic analogue signal with the frequency of described periodic square wave signal and all consistent monotone increasing of initial time for the periodic square wave signal exported by triggering signal generation module 11, and described periodic analogue signal is input to the second adjustment submodule 122, described second adjustment submodule 122 is for carrying out the comparing of magnitude of voltage from the first adjustment periodic analogue signal of submodule 121 with the threshold voltage signal of setting by what receive, and according to comparative result, described periodic analogue signal is converted to periodic square wave signal, and the periodic square wave signal after conversion is exported as outer synchronous triggering signal, wherein, the magnitude of voltage that the initial time at edge of the periodic square wave signal after what the second adjustment submodule 122 exported change is described periodic analogue signal equals the time of the magnitude of voltage of the threshold voltage signal of described setting.
Particularly, as shown in figures 2 or 4 (Fig. 4 is the concrete structure schematic diagram of the first adjustment submodule 121 described in the embodiment of the present invention two), described first adjustment submodule 121 comprises PNP type triode Q1, NPN type triode Q2, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4 and the 5th electric capacity C5, wherein:
The base stage (b) of described PNP type triode Q1 is connected with the output of triggering signal generation module 11 by the second electric capacity C2, the emitter (e) of described PNP type triode Q1 is connected with positive source (positive source shown in Fig. 2 or Fig. 4 is VCC), the collector electrode (c) of described PNP type triode Q1 is connected to the ground by the 6th resistance R6, and the emitter (e) of described PNP type triode Q1 five resistance R5 in parallel with between base stage (b), the 3rd electric capacity C3;
The base stage (b) of described NPN type triode Q2 is connected with the collector electrode (c) of PNP type triode Q1 by the 4th electric capacity C4, emitter (e) ground connection of described NPN type triode Q2, the collector electrode (c) of described NPN type triode Q2 is connected with positive source by the 8th resistance R8, and the base stage (b) of described NPN type triode Q2 seven resistance R7 in parallel with between emitter (e), collector electrode (c) the five electric capacity C5 in parallel with between emitter (e) of described NPN type triode Q2, wherein, one end that described 5th electric capacity C5 is connected with the collector electrode (c) of NPN type triode Q2 is the described first output adjusting submodule 121.
The operation principle of described first adjustment submodule 121 is: within each cycle, the signal exported when triggering signal generation module 11 is the moment of low level signal from high level signal redirect, the equal conducting of PNP type triode Q1 and NPN type triode Q2, voltage instantaneous on 5th electric capacity C5 reduces to zero, and the first adjustment submodule 121 is the signal of zero to the second adjustment submodule 122 input voltage value; In other moment in this cycle, as triggering signal generation module 11 export signal be continuously low level signal or from low level signal redirect be high level signal or be continuously high level signal time, PNP type triode Q1 and NPN type triode Q2 all not conductings, 8th resistance R8 and the 5th electric capacity C5 forms RC charge circuit, 5th electric capacity C5 is in charged state always, the signal that the first adjustment submodule 121 constantly rises to the second adjustment submodule 122 input voltage value from zero.
It should be noted that, the periodic square wave signal that described triggering signal generation module 11 exports can also can be converted to by other and realize with the electronic devices and components of periodic analogue signal of the frequency of described periodic square wave signal and all consistent monotone increasing of initial time or the combination of electronic devices and components by described first adjustment submodule 121, and the embodiment of the present invention is not limited in any way this.
Particularly, as illustrated in fig. 2 or fig. 5 (Fig. 5 is the concrete structure schematic diagram of the second adjustment submodule 122 described in the embodiment of the present invention two), described second adjustment submodule 122 comprises operational amplifier U2, the 6th electric capacity C6, the 9th resistance R9, the tenth resistance R10 and the 11 resistance R11, wherein:
The reverse input end ("-") of described operational amplifier U2 is connected with the first output adjusting submodule 121, the in-phase input end ("+") of described operational amplifier U2 to be connected with the output of the threshold voltage signal (Phase_Set as illustrated in fig. 2 or fig. 5) of setting by the tenth resistance R10 and to pass through the parallel circuits ground connection that is made up of the 6th electric capacity C6 and the 9th resistance R9, and the output that the output of described operational amplifier U2 is described second adjustment submodule 122 or triggering signal adjusting module 12 is also connected with positive source (positive source shown in Fig. 2 or Fig. 5 is VCC) by the 11 resistance R11.
The operation principle of described second adjustment submodule 122 is: when the magnitude of voltage of the periodic analogue signal that the first adjustment submodule 121 exports is less than the magnitude of voltage of the threshold voltage signal of setting, the second adjustment submodule 122 output low level signal; When the magnitude of voltage of the periodic analogue signal that the first adjustment submodule 121 exports is more than or equal to the magnitude of voltage of the threshold voltage signal of setting, the second adjustment submodule 122 exports high level signal; That is, by controlling the size of the threshold voltage signal magnitude of voltage of setting, adjustment first can be realized adjust the periodic analogue signal that submodule 121 exports and arrive time of the threshold voltage signal magnitude of voltage of this setting, and then reach the initial time that adjustment second adjusts the edge of the periodic square wave signal (Phase_OutA as illustrated in fig. 2 or fig. 5) after the conversion that submodule 122 exports, realize the object of the time delay of the outer synchronous triggering signal of adjustment.
It should be noted that, described second adjustment submodule 122 can also can carry out the comparing of magnitude of voltage from the first adjustment periodic analogue signal of submodule 121 with the threshold voltage signal of setting by what receive by other, and the combination (as comparator etc.) of the electronic devices and components or electronic devices and components that described periodic analogue signal are converted to periodic square wave signal according to comparative result realizes, the embodiment of the present invention is not limited in any way this.
More preferably, described outer synchronous triggering signal circuit also comprises triggering signal negate module 13:
Described triggering signal negate module 13 carries out inversion operation for the outer synchronous triggering signal exported triggering signal adjusting module 12, thus realizes the objects such as the conversion of different output and input level, increase driving force, the requirement of cooperation back-end circuit collection CPU samples edges; It should be noted that, if the signal that described triggering signal adjusting module 12 exports enough meets the needs of back-end circuit, then can not use described triggering signal negate module 13, the present invention is not limited in any way this.
Particularly, as illustrated in figs. 2 or 6 (Fig. 6 is the concrete structure schematic diagram of the module of triggering signal negate described in the embodiment of the present invention two 13), described triggering signal negate module 13 comprises reverser U3 and the 12 resistance R12, wherein:
The input of described reverser U3 is connected with the output of triggering signal adjusting module 12, as the output of triggering signal negate module 13 after the output of described reverser U3 is connected with the 12 resistance R12.
The operation principle of described triggering signal negate module 13 is: when triggering signal adjusting module 12(or second adjustment submodule 122) signal that exports is when being low level signal, triggering signal negate module 13 exports high level signal; When triggering signal adjusting module 12(or second adjustment submodule 122) signal that exports is when being high level signal, triggering signal negate module 13 output low level signal (signal that described triggering signal negate module 13 exports is the Phase_Out shown in Fig. 2 or Fig. 6).
It should be noted that, the combination (as comparator etc.) of electronic devices and components or electronic devices and components that the outer synchronous triggering signal that described triggering signal negate module 13 can also be exported described triggering signal adjusting module 12 by other carries out inversion operation realizes, and the embodiment of the present invention is not limited in any way this.
Further, the signal waveform transition diagram between the modules of the generation equipment of described outer synchronous triggering signal can be as shown in Figure 7.
Particularly, waveform (a) in Fig. 7 is the ac supply signal inputted to triggering signal generation module 11, the periodic square wave signal that waveform (b) exports for triggering signal generation module 11, waveform (c) is the periodic analogue signal (straight line being labeled as Phase_Set in this waveform c is the threshold voltage signal of the setting of outside input) of the monotone increasing that the first adjustment submodule 121 exports, waveform (d) is the second adjustment submodule 122(or triggering signal adjusting module 12) periodic square wave signal after the conversion that exports, the periodic square wave signal after negate process that waveform (e) exports for triggering signal negate module 13.
It should be noted that, the maximum of the periodic analogue signal of the monotone increasing that described first adjustment submodule 121 exports is VCC-Δ V, and wherein said Δ V is circuit decay magnitude of voltage; Further, the signal that each module exports all with the time of 1T for cycle period, the time of the ac supply signal one-period that namely 1T inputs; In addition, the delay time of the triggering signal that the threshold voltage signal adjustment that the Δ t in waveform (e) is the setting inputted by outside obtains; After the periodic square wave signal after negate process obtaining the output of triggering signal negate module 13, the start time point of trailing edge as outer synchronous triggering signal of the periodic square wave signal after this negate process can be utilized.
Embodiment three:
As shown in Figure 8, it is for utilizing the method flow schematic diagram of the outer synchronous triggering signal of generation equipment generation of outer synchronous triggering signal described in embodiment one described in the embodiment of the present invention three, the method for the outer synchronous triggering signal of described generation comprises the following steps:
Step 101: utilize triggering signal generation module generating period square-wave signal, and using described periodic square wave signal as the outer synchronous triggering signal generated.
Particularly, triggering signal generation module is utilized to convert the ac supply signal received to the periodic square wave signal consistent with described ac supply signal sequential, and using described periodic square wave signal as the outer synchronous triggering signal generated.
Step 102: utilize the initial time of triggering signal adjusting module to the edge of the periodic square wave signal that triggering signal generation module generates to adjust, and the periodic square wave signal after adjustment is exported as final outer synchronous triggering signal.
Particularly, triggering signal adjusting module is utilized the periodic square wave signal that triggering signal generation module generates to be converted to periodic analogue signal with the frequency of described periodic square wave signal and all consistent monotone increasing of initial time, and described periodic analogue signal is carried out comparing of magnitude of voltage with the threshold voltage signal of setting, and, according to comparative result, described periodic analogue signal is converted to periodic square wave signal, and the periodic square wave signal after conversion is exported as outer synchronous triggering signal, wherein, this change after the initial time at edge of the periodic square wave signal magnitude of voltage that is described periodic analogue signal equal time of the magnitude of voltage of the threshold voltage signal of described setting.
Further, when the magnitude of voltage of described periodic analogue signal is less than the magnitude of voltage of the threshold voltage signal of setting, triggering signal adjusting module output low level signal; When the magnitude of voltage of described periodic analogue signal is more than or equal to the magnitude of voltage of the threshold voltage signal of setting, triggering signal adjusting module exports high level signal.In addition, the magnitude of voltage that the initial time at the edge of the periodic square wave signal after the conversion that exports of described triggering signal adjusting module is described periodic analogue signal equals the moment of the magnitude of voltage of the threshold voltage signal set.
More preferably, the method for the outer synchronous triggering signal of described generation can also comprise the following steps:
Triggering signal negate module is utilized to carry out inversion operation to the outer synchronous triggering signal that triggering signal adjusting module exports, obtain the periodic square wave signal after negate process, and using the obtained periodic square wave signal after negate process as the outer synchronous triggering signal finally obtained.
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. a generation equipment for outer synchronous triggering signal, is characterized in that, the generation equipment of described outer synchronous triggering signal comprises triggering signal generation module and triggering signal adjusting module:
Described triggering signal generation module, for generating period square-wave signal, and using described periodic square wave signal as the outer synchronous triggering signal generated;
Described triggering signal adjusting module, the initial time for the edge of periodic square wave signal generated triggering signal generation module adjusts, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal;
Described triggering signal generation module, specifically for converting the ac supply signal received to the periodic square wave signal consistent with described ac supply signal sequential, and using described periodic square wave signal as the outer synchronous triggering signal generated.
2. the generation equipment of outer synchronous triggering signal as claimed in claim 1, is characterized in that,
Described triggering signal adjusting module, periodic square wave signal specifically for being generated by triggering signal generation module is converted to the periodic analogue signal with the frequency of described periodic square wave signal and all consistent monotone increasing of initial time, and described periodic analogue signal is carried out comparing of magnitude of voltage with the threshold voltage signal of setting, and, according to comparative result, described periodic analogue signal is converted to periodic square wave signal, and the periodic square wave signal after conversion is exported as outer synchronous triggering signal, wherein, this change after the initial time at edge of the periodic square wave signal magnitude of voltage that is described periodic analogue signal equal time of the magnitude of voltage of the threshold voltage signal of described setting.
3. the generation equipment of outer synchronous triggering signal as claimed in claim 2, is characterized in that, described triggering signal adjusting module comprises the first adjustment submodule and the second adjustment submodule:
Described first adjustment submodule, periodic square wave signal for being exported by triggering signal generation module is converted to the periodic analogue signal with the frequency of described periodic square wave signal and all consistent monotone increasing of initial time, and described periodic analogue signal is input to the second adjustment submodule;
Described second adjustment submodule, for carrying out the comparing of magnitude of voltage from the first adjustment periodic analogue signal of submodule with the threshold voltage signal of setting by what receive, and according to comparative result, described periodic analogue signal is converted to periodic square wave signal, and the periodic square wave signal after conversion is exported as outer synchronous triggering signal, wherein, the magnitude of voltage that the initial time at edge of the periodic square wave signal after what the second adjustment submodule exported change is described periodic analogue signal equals the time of the magnitude of voltage of the threshold voltage signal of described setting.
4. the generation equipment of outer synchronous triggering signal as claimed in claim 1, it is characterized in that, described outer synchronous triggering signal circuit also comprises triggering signal negate module:
Described triggering signal negate module, carries out inversion operation for the outer synchronous triggering signal exported triggering signal adjusting module.
5. the generation equipment of outer synchronous triggering signal as claimed in claim 1, it is characterized in that, described triggering signal generation module comprises photoelectrical coupler, the first resistance, the second resistance, the 3rd resistance, the 4th resistance and the first electric capacity, wherein:
1st pin of described photoelectrical coupler is successively through the second resistance, first resistance is connected with AC power, be connected to 2nd pin and common mode, 3rd pin ground connection, as the output of triggering signal generation module after 4th pin is connected with the 4th resistance, and the 4th pin is connected with positive source by the 3rd resistance, wherein, 1st pin of described photoelectrical coupler is the anode of the interior light emitting diodes of described photoelectrical coupler, 2nd pin is the negative electrode of the interior light emitting diodes of described photoelectrical coupler, 3rd pin is the emitter of the inside phototriode of described photoelectrical coupler, 4th pin is the collector electrode of the inside phototriode of described photoelectrical coupler,
Described first electric capacity is in parallel with the series circuit that the second resistance, photoelectrical coupler form.
6. the generation equipment of outer synchronous triggering signal as claimed in claim 3, it is characterized in that, described first adjustment submodule comprises PNP type triode, NPN type triode, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity, wherein:
The base stage of described PNP type triode is connected with the output of triggering signal generation module by the second electric capacity, the emitter of described PNP type triode is connected with positive source, the collector electrode of described PNP type triode is connected to the ground by the 6th resistance, and the emitter of described PNP type triode five resistance in parallel with between base stage, the 3rd electric capacity;
The base stage of described NPN type triode is connected with the collector electrode of PNP type triode by the 4th electric capacity, the grounded emitter of described NPN type triode, the collector electrode of described NPN type triode is connected with positive source by the 8th resistance, and collector electrode five electric capacity in parallel with between emitter of the base stage of described NPN type triode seven resistance in parallel with between emitter, described NPN type triode, wherein, one end that described 5th electric capacity is connected with the collector electrode of NPN type triode is the described first output adjusting submodule;
Described second adjustment submodule comprises operational amplifier, the 6th electric capacity, the 9th resistance, the tenth resistance and the 11 resistance, wherein:
The reverse input end of described operational amplifier is connected with the first output adjusting submodule, the in-phase input end of described operational amplifier to be connected with the output of the threshold voltage signal of setting by the tenth resistance and to pass through the parallel circuits ground connection that is made up of the 6th electric capacity and the 9th resistance, and the output of described operational amplifier is the output of described second adjustment submodule or triggering signal adjusting module and is connected with positive source by the 11 resistance.
7. the generation equipment of outer synchronous triggering signal as claimed in claim 4, it is characterized in that, described triggering signal negate module comprises reverser and the 12 resistance, wherein:
The input of described reverser is connected with the output of triggering signal adjusting module, as the output of triggering signal negate module after the output of described reverser is connected with the 12 resistance.
8. utilize the generation equipment of the arbitrary described outer synchronous triggering signal of claim 1 ~ 7 to generate a method for outer synchronous triggering signal, it is characterized in that, described method comprises:
Utilize triggering signal generation module generating period square-wave signal, and using described periodic square wave signal as the outer synchronous triggering signal generated;
Utilize the initial time of triggering signal adjusting module to the edge of the periodic square wave signal that triggering signal generation module generates to adjust, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal.
9. the method generating outer synchronous triggering signal as claimed in claim 8, is characterized in that, utilizes triggering signal generation module to generate outer synchronous triggering signal, specifically comprises:
Triggering signal generation module is utilized to convert the ac supply signal received to the periodic square wave signal consistent with described ac supply signal sequential, and using described periodic square wave signal as the outer synchronous triggering signal generated.
10. the method generating outer synchronous triggering signal as claimed in claim 9, it is characterized in that, the initial time of triggering signal adjusting module to the edge of the periodic square wave signal that triggering signal generation module generates is utilized to adjust, and the periodic square wave signal after adjustment is exported as outer synchronous triggering signal, specifically comprise:
Triggering signal adjusting module is utilized the periodic square wave signal that triggering signal generation module generates to be converted to periodic analogue signal with the frequency of described periodic square wave signal and all consistent monotone increasing of initial time, and described periodic analogue signal is carried out comparing of magnitude of voltage with the threshold voltage signal of setting, and, according to comparative result, described periodic analogue signal is converted to periodic square wave signal, and the periodic square wave signal after conversion is exported as outer synchronous triggering signal, wherein, this change after the initial time at edge of the periodic square wave signal magnitude of voltage that is described periodic analogue signal equal time of the magnitude of voltage of the threshold voltage signal of described setting.
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| CN104198781B (en) * | 2014-09-05 | 2017-09-15 | 珠海迈科智能科技股份有限公司 | A kind of method and device for controlling AC signal to export |
| CN104852710A (en) * | 2015-06-09 | 2015-08-19 | 张维秀 | Oscillation signal generation circuit and method |
| CN110456710A (en) * | 2019-08-20 | 2019-11-15 | 深圳市银河风云网络系统股份有限公司 | A kind of light cube intelligence control system based on wireless telecommunications |
| CN111044573B (en) * | 2019-11-28 | 2022-04-08 | 浙江大华技术股份有限公司 | Fault detection circuit and method for gas sensor |
| CN111508243A (en) * | 2020-04-30 | 2020-08-07 | 云南金隆伟业电子有限公司 | Synchronous control receiving method and device for radio stroboscopic signal lamp |
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