CN210899754U

CN210899754U - Indicating lamp circuit

Info

Publication number: CN210899754U
Application number: CN201922114829.5U
Authority: CN
Inventors: 汪培林
Original assignee: Suzhou Weisi Medical Technology Co ltd
Current assignee: Suzhou Weisi Medical Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-06-30
Anticipated expiration: 2029-11-29

Abstract

The utility model relates to an indicator lamp circuit, including control chip U105, drive circuit and LED lamp DL100, drive circuit is connected with control chip U105 electricity, drive circuit 10 includes electric capacity C111, resistance R115 and MOS pipe Q102, electric capacity C111's one end is connected with control chip U105's output electricity, electric capacity C111's other end connecting resistance R115 one end and MOS pipe Q102's control end, V _ STBY power outlet is connected to MOS pipe Q102's input and resistance R115's the other end, MOS pipe Q102's output is connected with LED lamp DL100, thereby control chip U105 output's control signal passes through electric capacity C111 and resistance R115 control MOS pipe Q102 switch on and turn-off control LED lamp DL100 and give out light, thereby control signal is the pulse signal who has the duty cycle. The utility model discloses can be in the luminance of ensureing the LED lamp can satisfy under the condition of requirement accurate control drive current to reach the purpose of control consumption.

Description

Indicating lamp circuit

Technical Field

The utility model belongs to the technical field of medical equipment, especially, relate to an indicator lamp circuit.

Background

Present AED (Automated External Defibrillator) product all has a status indicator lamp basically to whether the operating condition of reminding user's AED is good, if the self-checking passes through, the machine will dodge green light always, and the suggestion machine state is good, and then striking flashing light can let the people discover the machine position easily, and the people that conveniently needs the use instrument can discover equipment easily. However, AEDs are most emergency products powered by disposable batteries and can be taken out only in emergency situations. AEDs require that the battery be on standby long enough, typically 3 to 5 years. Therefore, the power consumption of the battery is very sensitive, the indicator light is very important, and if the indicator light is not available, whether the machine is good or not can not be judged quickly and accurately in an emergency state, so that the rescue time can be delayed. Therefore, it is necessary to invent an indicator light circuit which can obviously indicate the working state of the machine and can save power.

SUMMERY OF THE UTILITY MODEL

The utility model provides an indicator lamp circuit can obviously instruct machine operating condition, can save the power again.

The utility model provides an indicator lamp circuit, including control chip U105, drive circuit and LED lamp DL100, drive circuit 10 with control chip U105 electricity is connected, drive circuit 10 includes electric capacity C111, resistance R115 and MOS pipe Q102, electric capacity C111's one end with control chip U105's output electricity is connected, electric capacity C111's the other end is connected resistance R115 one end and MOS pipe Q102's control end, MOS pipe Q102's input and V _ STBY power delivery outlet is connected to resistance R115's the other end, MOS pipe Q102's output with LED lamp DL100 connects, the control signal of control chip U105 output passes through electric capacity C111 and resistance R115 control thereby MOS pipe Q102 switches on and shuts off control LED lamp DL100 is luminous, the pulse signal of control signal for having the duty cycle.

Further, the indicator light circuit further includes an inductor L102 and a capacitor C116, one end of the inductor L102 is connected to the output end of the MOS transistor Q102, one end of the LED lamp DL100 and one end of the capacitor C116 are connected in parallel to the other end of the inductor L102, and the other end of the LED lamp DL100 and the other end of the capacitor C116 are both grounded.

Further, the indicator light circuit further includes a resistor R119, and the resistor R119 and the LED light DL100 are disposed on the same branch.

Further, the MOS transistor Q102 is a P-channel MOS transistor, a gate of the MOS transistor Q102 is connected to the capacitor C111, a source of the MOS transistor Q102 is connected to the V _ STBY power output port, and a drain of the MOS transistor Q102 is connected to the LED lamp DL 100.

Further, the MOS transistor Q102 is an N-channel MOS transistor, a gate of the MOS transistor Q102 is connected to the capacitor C111, a drain of the MOS transistor Q102 is connected to the V _ STBY power output port, and a source of the MOS transistor Q102 is connected to the LED lamp DL 100.

Further, the control signal is composed of a series of pulse groups, the pulse groups are divided into two chopping operations, the first chopping operation is to give 8 pulse groups of 1ms every fixed period, the second chopping operation is to include a pulse signal with the frequency of 60Khz in each pulse group, and the low level time of the pulse signal is 2 mus.

Compared with the prior art, the embodiment of the utility model, beneficial effect lies in, the utility model discloses the control signal that control MOS pipe Q102 switched on and turn-off is for having the pulse signal of duty cycle, and drive current just can be adjusted to the pulse frequency and the duty cycle of adjusting control signal to because MOS pipe Q102 is voltage drive, so can not influence the drive effect to the LED lamp, the luminance of LED lamp can not receive the influence, consequently can be in the condition that ensures that the luminance of LED lamp can satisfy the demands under accurate control drive current, thereby reach the purpose of control consumption.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a block diagram of the circuit of the indicator light of the present invention;

FIG. 2 is a circuit diagram of the circuit of the indicator light of the present invention;

fig. 3 is a timing diagram of the circuit driving of the indicator light circuit of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-2, the utility model provides an indicator lamp circuit, including control chip U105, drive circuit 10 and LED lamp DL100, drive circuit 10 is connected with control chip U105 electricity, drive circuit 10 includes electric capacity C111, resistance R115 and MOS tube Q102, electric capacity C111's one end is connected with control chip U105's output electricity, electric capacity C111's other end connecting resistance R115 one end and MOS tube Q102's control end, V _ STBY power outlet is connected to the input of MOS tube Q102 and the other end of resistance R115, MOS tube Q102's output is connected with LED lamp DL100, thereby the control signal of control chip U105 output passes through electric capacity C111 and resistance R115 control MOS tube Q102's the switching on and the luminous of shutoff control LED lamp DL 100.

The utility model discloses a control signal is for having the pulse signal of duty cycle, and drive current just can be adjusted to regulation control signal's pulse frequency and duty cycle to because MOS pipe Q102 is voltage drive, so can not influence the drive effect to the LED lamp, the luminance of LED lamp can not receive the influence, consequently can be guaranteeing accurate control drive current under the condition that the luminance of LED lamp can satisfy the requirement, thereby reach the purpose of control consumption.

The indicator lamp circuit of the embodiment further includes an inductor L102 and a capacitor C116, one end of the inductor L102 is connected to the output end of the MOS transistor Q102, one end of the LED lamp DL100 and one end of the capacitor C116 are connected in parallel to the other end of the inductor L102, and the other end of the LED lamp DL100 and the other end of the capacitor C116 are both grounded. The on and off of the MOS transistor Q102 controls the charging and discharging of the inductor L102 and the capacitor C116, and the inductor L102 and the capacitor C116 determine the flashing time of the LED lamp DL 100. Preferably, the indicator light circuit of this embodiment further includes a resistor R119, the resistor R119 is disposed on the same branch as the LED light DL100, and the resistor R119 plays a role of current limiting.

The MOS transistor Q102 circuit is used as a switch, and the on and off of the MOS transistor Q102 affects the flickering of the LED lamp DL 100. In one embodiment, the MOS transistor Q102 is a P-channel MOS transistor, the gate of the MOS transistor Q102 is connected to the capacitor C111, the source of the MOS transistor Q102 is connected to the V _ STBY power output port, and the drain of the MOS transistor Q102 is connected to the LED lamp DL 100. Of course, in another embodiment, the MOS transistor Q102 may also be an N-channel MOS transistor, the gate of the MOS transistor Q102 is connected to the capacitor C111, the drain of the MOS transistor Q102 is connected to the V _ STBY power outlet, and the source of the MOS transistor Q102 is connected to the LED lamp DL 100.

Please further refer to fig. 3, the control signal is composed of a string of pulse groups, the pulse groups are chopped twice, the first chopping mode is to give 8 pulse groups of 1ms every fixed period, the second chopping mode is to include a pulse signal with a frequency of 60Khz in each pulse group, the low level time of the pulse signal is 2 μ s, compared with the common LED lamp lighting mode in the prior art, the brightness is not high, the power consumption is large, the average driving current of each LED lamp is about 5-30mA, the utility model discloses a chopping mode drives the LED to emit light, the average driving current can be reduced to the uA level, the reduction of the driving current is realized, and the flicker brightness of the LED lamp can still meet the clinical requirements.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

Above is the description to the technical scheme that the utility model provides, to technical personnel in the field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and range of application, to sum up, this description content should not be understood as the restriction of the utility model.

Claims

1. The indicator lamp circuit is characterized by comprising a control chip U105, a driving circuit (10) and an LED lamp DL100, the driving circuit (10) is electrically connected with the control chip U105, the driving circuit (10) comprises a capacitor C111, a resistor R115 and a MOS tube Q102, one end of the capacitor C111 is electrically connected with the output end of the control chip U105, the other end of the capacitor C111 is connected with one end of the resistor R115 and the control end of the MOS transistor Q102, the input end of the MOS tube Q102 and the other end of the resistor R115 are connected with a V _ STBY power supply output port, the output end of the MOS tube Q102 is connected to the LED lamp DL100, the control signal output by the control chip U105 controls the on and off of the MOS tube Q102 through the capacitor C111 and the resistor R115 to control the LED lamp DL100 to emit light, and the control signal is a pulse signal with a duty ratio.

2. The indicator light circuit according to claim 1, characterized in that the indicator light circuit further comprises an inductor L102 and a capacitor C116, wherein one end of the inductor L102 is connected to the output end of the MOS transistor Q102, one end of the LED lamp DL100 and one end of the capacitor C116 are connected in parallel to the other end of the inductor L102, and the other end of the LED lamp DL100 and the other end of the capacitor C116 are both grounded.

3. The indicator light circuit according to claim 2, further comprising a resistor R119, wherein the resistor R119 is disposed in the same branch as the LED lamp DL 100.

4. The indicator lamp circuit according to claim 1, wherein the MOS transistor Q102 is a P-channel MOS transistor, a gate of the MOS transistor Q102 is connected to the capacitor C111, a source of the MOS transistor Q102 is connected to the V _ STBY power outlet, and a drain of the MOS transistor Q102 is connected to the LED lamp DL 100.

5. The indicator lamp circuit according to claim 1, wherein the MOS transistor Q102 is an N-channel MOS transistor, a gate of the MOS transistor Q102 is connected to the capacitor C111, a drain of the MOS transistor Q102 is connected to the V _ STBY power outlet, and a source of the MOS transistor Q102 is connected to the LED lamp DL 100.

6. The indicator lamp circuit according to claim 1, wherein the control signal is composed of a series of pulse groups, the pulse groups are chopped twice, the first chopping is performed in a manner that 8 pulse groups of 1ms are provided at regular intervals, the second chopping is performed in a manner that each pulse group contains a pulse signal with a frequency of 60Khz, and the low level time of the pulse signal is 2 μ s.