CN210469831U

CN210469831U - Intelligent control system based on infrared induction

Info

Publication number: CN210469831U
Application number: CN201921558890.2U
Authority: CN
Inventors: 刘伟
Original assignee: Shenzhen Deyue Photoelectric Co Ltd
Current assignee: Shenzhen Deyue Photoelectric Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-05-05
Anticipated expiration: 2029-09-18

Abstract

An intelligent control system based on infrared induction is suitable for a light control system; the intelligent light control system solves the problems that when the existing intelligent light control system based on infrared induction is applied to a lamp, peripheral circuits are too complicated, so that devices are too many, the requirement on the size and the space of a product is too large, the size and the cost are greatly wasted, and the induction effect is not sensitive, no induction exists, false triggering often occurs in the market when the intelligent light control system is used. The utility model comprises an operational amplifier, a voltage comparator, a state controller, a delay time timer Tx, a blocking time timer Ti, a reference voltage source and a bidirectional amplitude discriminator; the operational amplifier, the voltage comparator, the state controller, the delay time timer Tx, the blocking time timer Ti, the reference voltage source and the bidirectional amplitude discriminator are respectively and electrically connected.

Description

Intelligent control system based on infrared induction

Technical Field

An intelligent control system based on infrared induction is suitable for a light control system, in particular to an intelligent light control system based on infrared induction.

Background

When the existing intelligent light control system based on infrared induction is applied to lamps, peripheral circuits are too complicated, so that too many devices are caused, the requirement on the size and the space of a product is too large, and the volume and the cost are greatly wasted. The intelligent light control system based on infrared induction in the existing market often has the phenomena of insensitive induction effect, no induction, false triggering and the like when in use.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: peripheral circuit is crossed in numerous and diverse when being applied to lamps and lanterns to current intelligent light control system based on infrared induction, leads to the device too much, and product size space requires too big to it is insensitive, do not respond to and phenomenon such as spurious triggering often appears in response effect when using in volume and cost extravagant and market greatly, the utility model provides a solution.

The technical content is as follows: an intelligent control system based on infrared induction comprises an operational amplifier, a voltage comparator, a state controller, a delay time timer Tx, a blocking time timer Ti, a reference voltage source and a bidirectional amplitude discriminator; the operational amplifier, the voltage comparator, the state controller, the delay time timer Tx, the blocking time timer Ti, the reference voltage source and the bidirectional amplitude discriminator are respectively and electrically connected.

Preferably, the operational amplifier is provided with an independent high-input-impedance operational amplifier which can be matched with various sensors for signal preprocessing.

Preferably, the voltage comparator gives instructions to the state controller through signal comparison, so that the starting forbidding and starting allowing effects are achieved, and the bidirectional amplitude discriminator is arranged in the voltage comparator, so that interference can be effectively suppressed.

Preferably, the state controller plays a role of information sharing of the connection operational amplifier, the voltage comparator, the state controller, the delay time timer Tx and the blocking time timer Ti.

Preferably, the delay time timer Tx is adjusted by an external resistor and a capacitor as an adjustment of the output delay time. The blocking time timer Ti is used for triggering the adjustment of the blocking time and is adjusted by an external resistor and a capacitor.

Preferably, the reference voltage source compares reference voltage reference values given by the system, and effectively compares external signals.

Preferably, the bidirectional amplitude discriminator performs bidirectional identification comparison on the signals, so that the signal induction effect is more accurate, and interference is limited and suppressed.

Preferably, the operational amplifier, the voltage comparator and the bidirectional amplitude discriminator ensure the best effect through signal amplification, signal comparison and bidirectional comparison, and early signal sampling.

Has the advantages that: the utility model relates to an intelligence control system based on infrared induction has adopted integrated modular design for peripheral circuit is simple, product size space requires not, very big saving space and cost. The utility model discloses a multistage operational amplifier and voltage comparator, reference voltage source and two-way amplitude discriminator for the response effect is more accurate, and limited suppression interference.

Drawings

Fig. 1 is the diagram of the infrared induction intelligent control system of the utility model.

Fig. 2 is the utility model discloses infrared induction intelligent control schematic diagram.

Fig. 3 is a waveform diagram of the nonrepeatable trigger of the present invention.

Fig. 4 is a diagram of the repeatable trigger waveform of the present invention.

Fig. 5 is the working principle of the present invention.

Detailed Description

An intelligent control system based on infrared induction comprises an operational amplifier, a voltage comparator, a state controller, a delay time timer Tx, a blocking time timer Ti, a reference voltage source and a bidirectional amplitude discriminator; the operational amplifier, the voltage comparator, the state controller, the delay time timer Tx, the blocking time timer Ti, the reference voltage source and the bidirectional amplitude discriminator are respectively and electrically connected. The operational amplifier is provided with an independent high-input-impedance operational amplifier and can be matched with various sensors to carry out signal preprocessing. The voltage comparator gives instructions to the state controller through signal comparison, the starting forbidding and starting allowing effects are achieved, and the bidirectional amplitude discriminator is arranged in the voltage comparator, so that interference can be effectively suppressed. The state controller plays a role in information sharing of the operational amplifier, the voltage comparator, the state controller, the delay time timer Tx and the blocking time timer Ti. The delay time timer Tx is used to adjust the output delay time by means of an external resistor and capacitor. The blocking time timer Ti is used for triggering the adjustment of the blocking time and is adjusted by an external resistor and a capacitor. The reference voltage source is used for comparing reference values of reference voltages given by the system, and external signals are effectively compared. The bidirectional amplitude discriminator is used for carrying out bidirectional identification comparison on signals, so that the signal induction effect is more accurate, and interference is limited and suppressed. The operational amplifier, the voltage comparator and the bidirectional amplitude discriminator ensure the best effect through signal amplification, signal comparison and bidirectional comparison and early signal sampling.

As shown in fig. 1, an intelligent control system based on infrared induction mainly includes an operational amplifier, a voltage comparator, a state controller, a delay time timer Tx, a blocking time timer Ti, and a reference voltage source.

As shown in fig. 5, the operational amplifier OP1 is used to constitute a sensing signal preprocessing circuit for amplifying the signal. Then, the signal is integrated into an operational amplifier OP2, and then, the second-stage amplification is performed, and after the DC potential is raised to VM (. apprxeq.0.5 VDD), the DC potential is sent to a bidirectional amplitude discriminator composed of comparators COP1 and COP2, and an effective trigger signal VS is detected. Since VH ≈ 0.7VDD and VL ≈ 0.3VDD, when VDD ≈ 5V, noise interference of ± 1V can be effectively suppressed, and reliability of the system can be improved. COP1 is a conditional comparator. When the input voltage VC < VR (≈ 0.2VDD), the COP1 outputs a low level to seal the and gate U2, and prohibit the trigger signal VS from passing to the lower stage; when VC is greater than VR, COP1 outputs high level, and opens AND gate U2, at this time, if there is an upper jump edge of trigger signal VS coming, the delay time timer can be started, and at the same time, the VS end outputs high level, entering into delay period. When the a-terminal is at "0" level, any change in V2 during the TX time is ignored until the end of the TX time, a so-called non-retriable trigger mode of operation. When the TX time is over, V2 jumps back down to low and starts the lock-out time timer to enter the lock-out period Ti. Any change in V2 during the Ti cycle does not make VO an active state. The function can effectively restrain various interferences generated in the process of load switching.

As shown in fig. 4, V5 cannot trigger V0 to be active during VC ═ 0 ", a ═ 0". V5 repeatedly toggles VO to the active state when VC is "1" and a is "1" and remains active for the TX period. In TX time, as long as there is an up-jump of V5, the VO will continue to extend a TX period 1 from the time of the up-jump of V5, and if VS keeps a '1' state, the VO keeps an active state all the time; if V5 remains in the "0" state, VO returns to the inactive state after the TX cycle ends, and any change in VS does not trigger VO to the active state for the lockout time TI.

Claims

1. The utility model provides an intelligence control system based on infrared induction which characterized in that: the circuit comprises an operational amplifier, a voltage comparator, a state controller, a delay time timer Tx, a blocking time timer Ti, a reference voltage source and a bidirectional amplitude discriminator; the operational amplifier, the voltage comparator, the state controller, the delay time timer Tx, the blocking time timer Ti, the reference voltage source and the bidirectional amplitude discriminator are respectively and electrically connected.

2. The intelligent control system based on infrared induction of claim 1, characterized in that: the operational amplifier is provided with an independent high-input-impedance operational amplifier and can be matched with various sensors to carry out signal preprocessing.

3. The intelligent control system based on infrared induction of claim 1, characterized in that: the voltage comparator gives instructions to the state controller through signal comparison, the starting forbidding and starting allowing effects are achieved, and the bidirectional amplitude discriminator is arranged in the voltage comparator, so that interference can be effectively suppressed.

4. The intelligent control system based on infrared induction of claim 1, characterized in that: the state controller plays a role in information sharing of the operational amplifier, the voltage comparator, the state controller, the delay time timer Tx and the blocking time timer Ti.

5. The intelligent control system based on infrared induction of claim 1, characterized in that: the delay time timer Tx is adjusted by an external resistor and a capacitor as an adjustment of the output delay time, and the lockout time timer Ti is adjusted by an external resistor and a capacitor as an adjustment of the trigger lockout time.

6. The intelligent control system based on infrared induction of claim 1, characterized in that: the reference voltage source is used for comparing reference values of reference voltages given by the system, and external signals are effectively compared.

7. The intelligent control system based on infrared induction of claim 1, characterized in that: the bidirectional amplitude discriminator is used for carrying out bidirectional identification comparison on signals, so that the signal induction effect is more accurate, and interference is limited and suppressed.

8. The intelligent control system based on infrared induction of claim 1, characterized in that: the operational amplifier, the voltage comparator and the bidirectional amplitude discriminator ensure the best effect through signal amplification, signal comparison and bidirectional comparison and early signal sampling.