CN2529489Y

CN2529489Y - High-frequency pulse light generator

Info

Publication number: CN2529489Y
Application number: CN 02225551
Authority: CN
Inventors: 王治才; 朱延彬; 周双富
Original assignee: DUPU Co Ltd GUANGZHOU
Current assignee: Guangzhou Fenghua Bioengineering Co., Ltd.
Priority date: 2002-01-31
Filing date: 2002-01-31
Publication date: 2003-01-01
Anticipated expiration: 2012-01-31

Abstract

The utility model discloses a high-frequency pulse light generator, which comprises a signal converting circuit that converts the input flashing rate signal into desired narrow pulse signal, an electric charging circuit used for providing energy, a triggering circuit used for controlling the flashing frequency, a pulse width controlling circuit and a pulse lamp used for controlling the lightening time. Wherein, the output terminal of the signal converting circuit is respectively connected with the other input terminal of the pulse width controlling circuit and the triggering circuit. The output terminal of the pulse width controlling circuit is connected with the connecting terminal of the pulse lamp. The output terminal of the triggering circuit is connected with the other connecting terminal of the pulse lamp. The utility model can generate high-frequency pulse light with frequency above 1000Hz, minimum pulse width below 3Mus, real-time adjustment of energy and steady performance. Therefore, the utility model has the advantages of extensive application range, simple circuit, low cost and simple application.

Description

A kind of high-frequency impulse optical generator

Affiliated technical field

The utility model relates to a kind of high-frequency impulse optical generator.

Background technology

The frequency of the pulse flash of light of in the prior art, be used to take a picture, print, industry such as composing is used only is 200Hz-300Hz, can't adapt to the demand of high frequency; China's utility model patent " a kind of time resolved fluoro-immunoassay instrument ", its bulletin is 2252991, the method that obtains high-frequency impulse light with mechanical chopper is disclosed in this patent, promptly the mechanical part by high speed rotating cuts continuous light source, this mechanical part complex structure, noise is big, the service behaviour instability; The pulsed light that also can produce in addition by the pulse laser of single spectrum, but suitable height of pulse laser cost and volume are big, also are not easy to safeguard.

The utility model content

The purpose of this utility model is to provide that a kind of cost is low, the electronics high-frequency impulse optical generator of stable performance.

The purpose of this utility model can realize by following technical measures: comprise that the flashing rate conversion of signals with input is the signaling conversion circuit of required narrow pulse signal, be used to provide the charging circuit of energy, be used to control the circuits for triggering of flashing rate, be used to control the pulse width control circuit of fluorescent lifetime and as the flashlight of light source, the output of described signaling conversion circuit respectively with described charging circuit, pulse width control circuit, the input of circuits for triggering links to each other, two outputs of charging circuit link to each other with another input of pulse width control circuit and circuits for triggering respectively, the output of pulse width control circuit links to each other with a link of flashlight, and the output of circuits for triggering links to each other with another link of flashlight.

Pulse width control circuit described in the utility model comprises two serial connection monostable triggers that are used to produce the conducting high level, the field effect transistor and the discharge capacity of control pulsewidth, monostable trigger output after the serial connection links to each other with the grid of field effect transistor, its source ground, discharge capacity is connected between the drain electrode and source electrode of field effect transistor, drain electrode is the output of this circuit with the tie point of discharge capacity, also is the input that this circuit links to each other with described charging circuit simultaneously.

Pulse width control circuit described in the utility model comprises two serial connection monostable triggers that are used to produce the conducting high level, the field effect transistor and the discharge capacity of control pulsewidth, monostable trigger output after the serial connection links to each other with the grid of field effect transistor, its source ground, drain electrode is connected in series with discharge capacity, another link of discharge capacity is the output of this circuit, also is the input that this circuit links to each other with described charging circuit simultaneously.

Circuits for triggering described in the utility model comprise and are used for anti-phase field effect transistor, switched field effect pipe, discharge capacity and pulse transformer, the drain electrode that is used for anti-phase field effect transistor links to each other through the grid of resistance with the switched field effect pipe, and the drain electrode of switched field effect pipe inserts the elementary winding of pulse transformer through discharge capacity; The input that the drain electrode of switched field effect pipe and the tie point of discharge capacity link to each other with described charging circuit for this circuit, the output of this circuit of secondary winding of pulse transformer.

Flashlight described in the utility model is an xenon flash lamp.

Owing to adopt electronics high-frequency pulse signal control common xenon flash lamp moment luminous, do not have the complicated machinery parts and the continuous light source of high speed rotating, its peak power height, circuit are simple, cost low this; By the control of circuits for triggering, pulse width control circuit, be higher than the high-frequency impulse light that 1000Hz, the I of pulsewidth reach 3 μ s, energy regulated at will, stable performance but can produce frequency, make its scope of application extensive; Also be easy in addition safeguard, use simple.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Fig. 1 is a functional-block diagram of the present utility model;

Fig. 2 is the circuit theory diagrams of the utility model embodiment 1;

Fig. 3 is the circuit theory diagrams of the utility model embodiment 2.

Embodiment

As shown in Figure 1, the utility model comprises that the flashing rate conversion of signals with input is the signaling conversion circuit of required narrow pulse signal, be used to provide the charging circuit of energy, be used to control the circuits for triggering of flashing rate, be used to control the pulse width control circuit of fluorescent lifetime and as the xenon flash lamp of light source, the output of described signaling conversion circuit respectively with described charging circuit, pulse width control circuit, the input of circuits for triggering links to each other, two outputs of charging circuit link to each other with another input of pulse width control circuit and circuits for triggering respectively, the output of pulse width control circuit links to each other with a link of xenon flash lamp, and the output of circuits for triggering links to each other with another link of xenon flash lamp.

As shown in Figure 2, pulse width control circuit in the present embodiment 1 comprises monostable field effect transistor M5 and the discharge capacity CB that triggers IC3A, IC3B, control pulsewidth of two serial connections that is used to produce the conducting high level, monostable trigger output after the serial connection links to each other with the grid of field effect transistor M5, its source ground, discharge capacity CB is connected between the drain electrode and source electrode of field effect transistor M5, drain electrode is the output of this circuit with the tie point of discharge capacity, also is the input that this circuit links to each other with described charging circuit simultaneously.

Circuits for triggering comprise and are used for anti-phase field effect transistor M1, switched field effect pipe M2, discharge capacity CZ and pulse transformer B1, the drain electrode that is used for anti-phase field effect transistor M1 links to each other through the grid of resistance with switched field effect pipe M2, and the drain electrode of switched field effect pipe M2 inserts the elementary winding of pulse transformer B1 through discharge capacity CZ; The input that the drain electrode of switched field effect pipe M2 and the tie point of discharge capacity CZ link to each other with described charging circuit for this circuit, the output of this circuit of secondary winding of pulse transformer B1.

Signaling conversion circuit is a monostable trigger IC1A; Charging circuit is by two serial connection monostable trigger IC1B, IC2A being used to control the charging interval, a charge circuit and a charge circuit composition of giving discharge capacity CZ charging of giving discharge capacity CB charging, each charge circuit comprises light lotus root, switched field effect pipe and resistance, the monostable trigger output after the serial connection respectively with each charge circuit in the control of light lotus root extremely link to each other.

The course of work of each circuit is in the present embodiment: flashing light enters monostable trigger IC1A through resistance R 4, rising edge in flashing light, monostable trigger IC1A exports the pulse signal of about 3 μ s, the width T1 of this pulse signal is the product of capacitor C 1 and resistance R 3, and this T1 is a conversion timing signal.Narrow pulse width signal by monostable trigger IC1A output passes through the anti-phase of resistance R 5, field effect transistor M1, makes conducting in the time range of switched field effect pipe M2 in narrow arteries and veins; Because switched field effect pipe M2 conducting, the electric weight on the discharge capacity CZ arrives ground through switched field effect pipe M2, with closed-loop path of formation, former limit of pulse transformer B1; Because there is the input of pulse signal on former limit, at the secondary of pulse transformer B1 the pulse output of a narrow pulsewidth of the about 9KV of high voltage should be arranged mutually also, make the gas activation in the xenon flash lamp B2 and discharge; Because discharge capacity CB has one to terminate to ground, after gas activated in the xenon flash lamp B2, the electric weight on the discharge capacity CB formed a closed-loop path like this, and the energy of discharge capacity CB constantly supplies to xenon flash lamp B2, makes xenon flash lamp B2 luminous.

Because the end of xenon flash lamp B2 is received in the series connection of the secondary of pulse transformer B1, in order to obtain sufficiently high trigger voltage, the secondary number of turn of pulse transformer B1 is all more around getting usually, and inductance value is increased; Frequency formula according to the LC oscillating circuit: T=2 π LC, L increases, and T is increased, T increases, and then the energy time of discharge capacity CB supply xenon flash lamp B2 is long, then the fluorescent lifetime of xenon flash lamp B2 lengthening, the fluorescent lifetime lengthening is unfavorable for the raising of flashing rate.Narrow pulse signal in monostable trigger IC1A output, when making switched field effect pipe M2 conducting, monostable trigger IC3A is triggered, the width T2 of its pulse signal is the product of capacitor C 6 and resistance R 16, the width T2 of this pulse signal is that xenon flash lamp pulsewidth time of delay is the bright time of xenon lamp, after the rising edge of monostable trigger IC3A arrives, monostable trigger IC3B is also moved, monostable trigger IC3B exports high level, make field effect transistor M5 conducting, field effect transistor M5 ON time T3 is the product of resistance R 17 and capacitor C 5, this ON time T3 is the pulsewidth discharge time of xenon lamp, after field effect transistor M5 conducting, then the energy that does not still have on the discharge capacity CB to have discharged is discharged by field effect transistor M5, then by force that xenon flash lamp is bright time T 2 reduces.

By the narrow pulse signal of monostable trigger IC1A output, through resistance R 7, monostable trigger IC1B is triggered, the width T4 of its pulse signal is the product of capacitor C 7 and resistance R 13, the width T4 of this pulse signal is the electric capacity charging turn-off time, T4＞T1+T2+T3.The signal of monostable trigger IC1B output makes monostable trigger IC2A work, and the width T5 of its pulse signal is the product of capacitor C 4, C2, C3 sum and resistance R 8, and this T5 is a capacitor charging time; The output pulse of monostable trigger IC2A makes two light lotus root O1, O2 conductings in the charge circuit, and two charge circuits are given discharge capacity CB, discharge capacity CZ charging with the voltage of 500V respectively.In order to guarantee that circuit has time enough, should make the time long enough of electric capacity charging T5, but must satisfy T5, T4 sum less than flash time; Otherwise if T4＜T1+T2+T3 then makes T5 increase, after T5 increased, the energy that can make power supply was by field effect transistor M3, M2, M4, M5, and resistance R 11, R15 direct short-circuit are burnt circuit to ground.

Be illustrated in figure 3 as another embodiment of the utility model, the circuit of this embodiment and principle fundamental sum the foregoing description 1 are identical, its difference only is the connection and the principle of pulse width control circuit, pulse width control circuit among the embodiment 2 comprises two serial connection monostable trigger IC3A that are used to produce the conducting high level, IC3B, the field effect transistor M5 and the discharge capacity CB of control pulsewidth, monostable trigger output after the serial connection links to each other with the grid of field effect transistor M5, its source ground, drain electrode is connected in series with discharge capacity CB, another link of discharge capacity CB is the output of this circuit, also is the input that this circuit links to each other with described charging circuit simultaneously.Its principle is to utilize the voltage on the discharge capacity CB to control the situation that the energy among the discharge capacity CB is emitted automatically; After the voltage on the CB drops to certain value, field effect transistor M5 is turn-offed, then the energy on the discharge capacity CB can not discharge by xenon lamp again, so the xenon lamp lantern festival is extinguished automatically, improves its flashing rate.

Claims

1, a kind of high-frequency impulse optical generator, it is characterized in that: comprise that the flashing rate conversion of signals with input is the signaling conversion circuit of required narrow pulse signal, be used to provide the charging circuit of energy, be used to control the circuits for triggering of flashing rate, be used to control the pulse width control circuit and the flashlight of fluorescent lifetime, the output of described signaling conversion circuit respectively with described charging circuit, pulse width control circuit, the input of circuits for triggering links to each other, two outputs of charging circuit link to each other with another input of pulse width control circuit and circuits for triggering respectively, the output of pulse width control circuit links to each other with a link of flashlight, and the output of circuits for triggering links to each other with another link of flashlight.

2, high-frequency impulse optical generator according to claim 1, it is characterized in that: described pulse width control circuit comprises two serial connection monostable trigger (IC3A that are used to produce the conducting high level, IC3B), the field effect transistor (M5) and the discharge capacity (CB) of control pulsewidth, monostable trigger output after the serial connection links to each other with the grid of field effect transistor (M5), its source ground, discharge capacity (CB) is connected between the drain electrode and source electrode of field effect transistor (M5), drain electrode is the output of this circuit with the tie point of discharge capacity, also is the input that this circuit links to each other with described charging circuit simultaneously.

3, high-frequency impulse optical generator according to claim 1, it is characterized in that: described pulse width control circuit comprises two serial connection monostable triggers (IC3A, IC3B) that are used to produce the conducting high level, the field effect transistor (M5) and the discharge capacity (CB) of control pulsewidth, monostable trigger output after the serial connection links to each other with the grid of field effect transistor (M5), its source ground, drain electrode is connected in series with discharge capacity (CB), another link of discharge capacity (CB) is the output of this circuit, also is the input that this circuit links to each other with described charging circuit simultaneously.

4, high-frequency impulse optical generator according to claim 1, it is characterized in that: described circuits for triggering comprise and are used for anti-phase field effect transistor (M1), switched field effect pipe (M2), discharge capacity (CZ) and pulse transformer (B1), the drain electrode that is used for anti-phase field effect transistor (M1) links to each other through the grid of resistance with switched field effect pipe (M2), and the drain electrode of switched field effect pipe (M2) inserts the elementary winding of pulse transformer (B1) through discharge capacity (CZ); The input that the drain electrode of switched field effect pipe (M2) and the tie point of discharge capacity (CZ) link to each other with described charging circuit for this circuit, the output of this circuit of secondary winding of pulse transformer (B1).

5, high-frequency impulse optical generator according to claim 1 is characterized in that: described flashlight is an xenon flash lamp.