CN202488569U - Acquiring device of still photo of natural lightning discharging passage - Google Patents
Acquiring device of still photo of natural lightning discharging passage Download PDFInfo
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- CN202488569U CN202488569U CN2012200993260U CN201220099326U CN202488569U CN 202488569 U CN202488569 U CN 202488569U CN 2012200993260 U CN2012200993260 U CN 2012200993260U CN 201220099326 U CN201220099326 U CN 201220099326U CN 202488569 U CN202488569 U CN 202488569U
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Abstract
The utility model relates to an acquiring device of a natural lightning discharging passage, and the acquiring device comprises a still camera, a triggering device and a connection cable, wherein the triggering device is connected to an electronic shutter port of the still camera through the connection cable, the triggering device is installed on a hot shoe of the still camera, the triggering device is provided with a metal shell, the metal shell of the triggering device is provided with a monitoring lens, a shifting switch, a status indicator lamp, a reference voltage adjusting knob and a shutter triggering output port; an internal circuit of the triggering device consists of a thunder-lightning optical signal detection module, a triggering level generation module and a still camera control module; the thunder-lightning optical signal detection module comprises a thunder-lightning optical signal detector, a high-pass filter module and a signal amplification module; the trigger level generation module consists of a voltage comparison circuit and a mono-stable triggering circuit; and the still camera control module consists of a direct-current relay and a shutter triggering circuit. The acquiring device has advantages of small size, portability, high reliability, simplicity in use and easiness in installation.
Description
Technical field
The utility model belongs to lightning monitoring and record field, relates in particular to a kind of deriving means of natural lightning discharge passage still photo.
Background technology
The high voltage that thunder discharge produces, big electric current usually cause direct or indirect heavy losses to people's lives and properties, and because the randomness of thunder and lightning and the sudden people of making are difficult to prevention to it.So the physical process of surveying and study thunder and lightning and its cause and discharge has important and practical meanings.In order further to improve the understanding of people to thunder and lightning, have only the physical features of grasp thunder and lightning and generation, the rule of development of thunder and lightning, could more efficientlyly prevent or reduce the harm that thunder and lightning causes the mankind.
Thunder discharge can be accompanied by sound, light, electricity, magnetic signal usually, and accurately measuring these parameters is important means of understanding thunder and lightning generation, development mechanism.The instant that the still photo of nature lightning discharge passage usually can depict the development of thunder discharge passage changes; The route characteristic of displaying thunder and lightning development that can be vivid; Simultaneously; Also can know the position of showing lightning strike spot, the evidence of reflection thunder discharge truth can be provided for the performance of checking lightning location system.
Know according to the applicant; Obtaining of nature lightning discharge passage still photo mainly is at present to utilize the shutter of Artificial Control digital camera to discharge to realize; Be that camera shutter is in open mode always; That that see the thunder and lightning passage at human eye constantly discharges camera shutter, notes the still photo of nature lightning discharge passage.But; The time that still photo is taken leans on the shutter of Artificial Control digital camera to realize being difficult to accurately hold; Because the duration of a thunder discharge about the hundreds of millisecond, in the so short time period, is to be not easy to accomplish accurately to hold the time that still photo is taken on average.Trace it to its cause is that human factor (concentrating with the reaction time fast inadequately etc. inadequately like attentiveness) causes; Make that many times utilizing manual type control digital camera to obtain nature lightning discharge passage photo all ends in failure, so that missed the chance of noting more thunder and lightning data.
The utility model content
The purpose of the utility model is, considers above-mentioned deficiency of the prior art and designs, and a kind of deriving means of natural lightning discharge passage still photo is provided.Its reliability is high, use is simple, and easy mounting can realize full automatic work.
The technical solution of the utility model is; Comprise still camera, trigger equipment, connection cable; Trigger equipment is received the electronic shutter interface of still camera through connection cable, it is characterized in that trigger equipment is installed on the hot shoe of still camera; Trigger equipment is furnished with metal shell, and the metal shell of trigger equipment is provided with monitoring camera lens, toggle switch, status indicator lamp, reference voltage adjusting knob and shutter and triggers output interface; The internal circuit of trigger equipment is made up of thunder and lightning optical signal detection module, triggering level generation module, still camera control module; Thunder and lightning optical signal detection module comprises thunder and lightning optical signal detector, high-pass filtering module and signal amplification module; The triggering level generation module is made up of voltage comparator circuit and single-shot trigger circuit; The still camera control module is made up of direct current relay and fast gate trigger circuit; The thunder and lightning optical signal detector is connected with the high-pass filtering module, and the high-pass filtering module is connected with the signal amplification module; The signal amplification module is connected with voltage comparator circuit, and voltage comparator circuit is connected with single-shot trigger circuit, and single-shot trigger circuit is connected with direct current relay, and direct current relay is connected with fast gate trigger circuit.
It is characterized in that the fast gate trigger circuit of still camera control module triggers output interface through shutter and is connected with the electronic shutter interface of still camera with connection cable.
It is characterized in that the thunder and lightning optical signal detector adopts high-responsivity, low noise photodiode, and installed the camera lens that is used to control light-inletting quantity additional at front end.
It is characterized in that the high-pass filtering module can be carried out filtering to constant bias light signal, the output signal of process high-pass filtering module only characterizes fast-changing thunder and lightning light signal.
It is characterized in that voltage comparator circuit is made up of adjustable level element circuit and voltage comparator, can regulate the height of triggering level as required.
It is characterized in that single-shot trigger circuit is made up of devices such as monostable flipflop CD4047, its function is that the level signal of voltage comparator circuit output is carried out compound shaping, forms the Transistor-Transistor Logic level signal that pulse duration is suitable for driving direct current relay.
It is characterized in that direct current relay and relevant driving and protective circuit constitute the direct current relay drive circuit, be used for further driving the release of the electronic switch of still camera, and prevent the generation of false triggering.
The advantage and the beneficial effect of the utility model are:
1) in nature lightning simultaneous observation system, uses, can obtain good effect, not only can be used to obtain the static images of nature lightning discharge passage, also can be used for the field that other records change light signal fast, like record firework display state;
2) adopted the filtering technique and the circuit design that are suitable for, made this system only take place just to export the triggering level signal under the fast-changing condition at light signal, the order still camera carries out record to the thunder discharge passage;
3) small and exquisite, portable, reliability is high, use simple and easy mounting, can realize full automatic work, reduced and write down the danger that nature lightning discharge process is faced;
4) adopt with suitable coupling of thunder and lightning spectrum peak section and responsive optical detection transducer, can the thunder discharge incident in 20 kilometer range be responded;
5) can support the digital camera of major part ability external connected electronic cable release on the market, a connection cable that only needs replacing and this camera shutter line interface to be complementary gets final product.
Description of drawings
Fig. 1, the utility model basic structure sketch map
The sketch map of the shutter relative thunderbolt lag time generating process of Fig. 2, digital camera
The internal circuit block diagram of the trigger equipment that Fig. 3, the utility model adopt
The internal circuit schematic diagram of the trigger equipment that Fig. 4, the utility model adopt
Embodiment
Below, be described in further detail in conjunction with accompanying drawing and embodiment content the utility model.
As shown in Figure 1, the utility model comprises still camera 1, connection cable 2 and trigger equipment 3.Still camera 1 connects with connection cable 2, and trigger equipment 3 links together through connection cable 2 and still camera 1.Trigger equipment 3 is installed on the hot shoe of still camera 1; Trigger equipment 3 is furnished with metal shell; Metal shell is used for shielding external electromagnetic interference, has monitoring camera lens, toggle switch, status indicator lamp, reference voltage adjusting knob and shutter to trigger output interface on the metal shell outside of trigger equipment 3.Monitoring camera lens by the front end at metal shell is equipped with is controlled light-inletting quantity; Toggle switch on the metal shell is the mains switch of trigger equipment 3; State display lamp is used for indicating the operating state of trigger equipment 3; The reference voltage adjusting knob can be regulated the reference level of voltage comparator input as required, and the shutter control signal that triggers the back generation sends still camera 1 to through connection cable 2; The connection cable 2 that trigger equipment 3 and still camera 1 connect is that the thread switching control with the electronic shutter of the still camera of this model serves as that the basis makes; Promptly do not change the joint of thread switching control of the electronic shutter of an end that is connected to still camera 1; And just the other end of electronic shutter thread switching control is processed, the output that two lines that the thread switching control of electronic shutter is corresponding are connected respectively to trigger equipment 3 gets final product.The digital camera of selling on the still camera 1 employing market.
As shown in Figure 2; Shutter lag time and the generation of thunderbolt, the yardstick contrast of development time by digital camera can be known; The average incident that continues of once natural thunderbolt incident is about the hundreds of millisecond; And with respect to hundreds of millisecond scope, the still camera 1 that the shutter of a few tens of milliseconds can make lag time most of (adopting the digital camera of selling on the market) has the sufficient time to note the still photo of passage of the lightning discharge of natural lightning.
Like Fig. 3, shown in Figure 4, the internal circuit of the trigger equipment 3 of the utility model is made up of thunder and lightning optical signal detection module, triggering level generation module, still camera control module.Wherein, thunder and lightning optical signal detection module comprises thunder and lightning optical signal detector 3.1, high-pass filtering module 3.2 and signal amplification module 3.3; Thunder and lightning optical signal detector 3.1 is connected with high-pass filtering module 3.2, and high-pass filtering module 3.2 is connected with signal amplification module 3.3.Thunder and lightning optical signal detector 3.1 adopts high-responsivity, low noise photodiode, and has installed the camera lens that is used to control light-inletting quantity additional at front end.The triggering level generation module is made up of voltage comparator circuit 3.4 and single-shot trigger circuit 3.5; The input of voltage comparator circuit 3.4 is connected with signal amplification module 3.3; The input of single-shot trigger circuit 3.5 is connected with voltage comparator circuit 3.4; The output of voltage comparator circuit 3.4 connects the still camera control module, and the still camera control module is made up of direct current relay and fast gate trigger circuit, and direct current relay constitutes the direct current relay drive circuit with relevant driving and protective circuit; The switch that is used for further driving the electronic shutter of still camera 1 discharges, and prevents the generation of false triggering.Direct current relay adopts 5V direct current relay 3.6; The input of fast gate trigger circuit is connected with 5V direct current relay 3.6; The input of 5V direct current relay 3.6 is connected with single-shot trigger circuit 3.5.Single-shot trigger circuit 3.5 is made up of monostable flipflop CD4047 and peripheral components thereof; Its function is that the level signal of voltage comparator circuit 3.4 outputs is carried out compound shaping, forms the Transistor-Transistor Logic level signal that pulse duration is suitable for driving 5V direct current relay 3.6.Voltage comparator circuit 3.4 is made up of adjustable level element circuit and voltage comparator, regulates the height of triggering level as required.Fast gate trigger circuit adopts shutter control circuit 3.7.
The light signal that thunder and lightning optical signal detector 3.1 detects is input to high-pass filtering module 3.2 and carries out Filtering Processing, and high-pass filtering module 3.2 can be carried out filtering to constant bias light signal.3.2 filterings of high-pass filtering module noise signal and only let fast-changing thunder and lightning light signal pass through; Thereby; Make the output signal of process high-pass filtering module 3.2 only characterize fast-changing thunder and lightning light signal, make that like this utility model by day also can operate as normal.Be imported into signal amplification module 3.3 through filtered fast-changing thunder and lightning light signal, the thunder and lightning light variable signal that the amplitude that obtains is preferably; The adjustable reference level signal of negative input end input that thunder and lightning light variable signal is imported into positive input terminal and the voltage comparator 3.4 of voltage comparator circuit 3.4 compares; If the amplitude of thunder and lightning light variable signal surpasses the amplitude of adjustable reference level signal, voltage comparator 3.4 will trigger the level signal of a sudden change of output.The magnitude of voltage of the adjustable reference level signal of the negative input end through changing voltage comparator 3.4; Appropriate threshold is set; Just can avoid thinking other signals by mistake thunder and lightning light variable signal, also can avoid because of the excessive test leakage thunder and lightning of threshold value light variable signal because of threshold value is too small.The level signal of the sudden change of the triggering of voltage comparator circuit 3.4 output is imported into single-shot trigger circuit 3.5 and carries out compound shaping, form width and be 100ms+the Transistor-Transistor Logic level signal of 5V.This Transistor-Transistor Logic level signal is used to drive the action of 5V direct current relay 3.6, and shutter control circuit 3.7 also responds this action then, and order still camera 1 is noted the still photo of nature lightning discharge channel this moment.
Claims (7)
1. the deriving means of a natural lightning discharge passage still photo; Comprise still camera, trigger equipment, connection cable; Trigger equipment is received the electronic shutter interface of still camera through connection cable, it is characterized in that trigger equipment (3) is installed on the hot shoe of still camera (1); Trigger equipment (3) is furnished with metal shell, and the metal shell of trigger equipment (3) is provided with monitoring camera lens, toggle switch, status indicator lamp, reference voltage adjusting knob and shutter and triggers output interface; The internal circuit of trigger equipment (3) is made up of thunder and lightning optical signal detection module, triggering level generation module, still camera control module; Thunder and lightning optical signal detection module comprises thunder and lightning optical signal detector (3.1), high-pass filtering module (3.2) and signal amplification module (3.3); The triggering level generation module is made up of voltage comparator circuit (3.4) and single-shot trigger circuit (3.5); The still camera control module is made up of direct current relay and fast gate trigger circuit; Thunder and lightning optical signal detector (3.1) is connected with high-pass filtering module (3.2), and high-pass filtering module (3.2) is connected with signal amplification module (3.3); Signal amplification module (3.3) is connected with voltage comparator circuit (3.4), and voltage comparator circuit (3.4) is connected with single-shot trigger circuit (3.5), and single-shot trigger circuit (3.5) is connected with direct current relay, and direct current relay is connected with fast gate trigger circuit.
2. the deriving means of a kind of natural lightning discharge passage still photo according to claim 1; It is characterized in that the fast gate trigger circuit of still camera control module triggers output interface through shutter and is connected with the electronic shutter interface of connection cable (2) with still camera (1).
3. the deriving means of a kind of natural lightning discharge passage still photo according to claim 1; It is characterized in that; Thunder and lightning optical signal detector (3.1) adopts high-responsivity, low noise photodiode, and has installed the camera lens that is used to control light-inletting quantity additional at front end.
4. the deriving means of a kind of natural lightning discharge passage still photo according to claim 1; It is characterized in that; High-pass filtering module (3.2) is carried out filtering to constant bias light signal, and the output signal of process high-pass filtering module (3.2) only characterizes fast-changing thunder and lightning light signal.
5. the deriving means of a kind of natural lightning discharge passage still photo according to claim 1 is characterized in that, voltage comparator circuit (3.4) is made up of adjustable level element circuit and voltage comparator, can regulate the height of triggering level as required.
6. the deriving means of a kind of natural lightning discharge passage still photo according to claim 1; It is characterized in that; Single-shot trigger circuit (3.4) is made up of monostable flipflop CD4047 and peripheral components thereof; Its function is that the level signal of voltage comparator circuit (3.4) output is carried out compound shaping, forms the Transistor-Transistor Logic level signal that pulse duration is suitable for driving direct current relay.
7. the deriving means of a kind of natural lightning discharge passage still photo according to claim 1; It is characterized in that; Direct current relay constitutes the direct current relay drive circuit with relevant driving and protective circuit; The switch that is used for further driving the electronic shutter of still camera (1) discharges, and prevents the generation of false triggering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200993260U CN202488569U (en) | 2012-03-16 | 2012-03-16 | Acquiring device of still photo of natural lightning discharging passage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200993260U CN202488569U (en) | 2012-03-16 | 2012-03-16 | Acquiring device of still photo of natural lightning discharging passage |
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| CN202488569U true CN202488569U (en) | 2012-10-10 |
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| CN2012200993260U Expired - Lifetime CN202488569U (en) | 2012-03-16 | 2012-03-16 | Acquiring device of still photo of natural lightning discharging passage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375361A (en) * | 2014-12-17 | 2015-02-25 | 席浩洲 | Expandable cable release for camera |
| CN104502818A (en) * | 2014-12-26 | 2015-04-08 | 武汉大学 | Observation method for discharge phenomena in gas discharge tests |
| CN105530432A (en) * | 2016-01-18 | 2016-04-27 | 云南电网有限责任公司电力科学研究院 | Lightning return stroke channel shooting device and method |
| CN105554405A (en) * | 2016-03-04 | 2016-05-04 | 国网江苏省电力公司电力科学研究院 | Trigger device for natural thunder and lightening discharge channel static picture acquiring device |
| CN113810620A (en) * | 2020-06-13 | 2021-12-17 | 李凤义 | Shutter control method of digital shooting equipment |
-
2012
- 2012-03-16 CN CN2012200993260U patent/CN202488569U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375361A (en) * | 2014-12-17 | 2015-02-25 | 席浩洲 | Expandable cable release for camera |
| CN104502818A (en) * | 2014-12-26 | 2015-04-08 | 武汉大学 | Observation method for discharge phenomena in gas discharge tests |
| CN104502818B (en) * | 2014-12-26 | 2018-10-09 | 武汉大学 | Electric discharge phenomena observation procedure in a kind of experiment of gas discharge |
| CN105530432A (en) * | 2016-01-18 | 2016-04-27 | 云南电网有限责任公司电力科学研究院 | Lightning return stroke channel shooting device and method |
| CN105554405A (en) * | 2016-03-04 | 2016-05-04 | 国网江苏省电力公司电力科学研究院 | Trigger device for natural thunder and lightening discharge channel static picture acquiring device |
| CN113810620A (en) * | 2020-06-13 | 2021-12-17 | 李凤义 | Shutter control method of digital shooting equipment |
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Effective date of registration: 20160623 Address after: 430074 Hubei city of Wuhan province Wuchang Luo Yu Road, No. 143 Patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Patentee before: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Patentee before: State Grid Electric Power Research Insititute |
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Granted publication date: 20121010 |