CN203313147U - Infrared induction switch - Google Patents

Infrared induction switch Download PDF

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Publication number
CN203313147U
CN203313147U CN2013203977029U CN201320397702U CN203313147U CN 203313147 U CN203313147 U CN 203313147U CN 2013203977029 U CN2013203977029 U CN 2013203977029U CN 201320397702 U CN201320397702 U CN 201320397702U CN 203313147 U CN203313147 U CN 203313147U
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China
Prior art keywords
resistance
circuit
comparator
output
lock
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Application number
CN2013203977029U
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Chinese (zh)
Inventor
林承岳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NINGBO CHAOTENG LIGHTING AND ELECTRONIC CO Ltd
Original Assignee
NINGBO CHAOTENG LIGHTING AND ELECTRONIC CO Ltd
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Priority to CN2013203977029U priority Critical patent/CN203313147U/en
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Abstract

The utility model provides an infrared induction switch which includes a power supply circuit, an infrared detector a signal processing circuit, and a relay which are connected in order. The infrared induction switch is characterized by further comprising a locking circuit. An output end of the locking circuit is connected with a common terminal between the signal processing circuit and the relay. With the arrangement of the locking circuit, the infrared induction switch can enable the infrared detector to be effective or ineffective and to switch between the two working modes through the switching on/off of the electricity, and the simpleness and the convenience are realized.

Description

Infrared sensing switch
Technical field:
The utility model relates to a kind of infrared sensing switch.
Background technology:
Infrared sensing switch is generally to be applied in light control, in conjunction with light-operated circuit, when night, surveys human body by human body infrared detector, when having the people close, with regard to the control relay action, thereby opens lamp luminescence.But, be not need human body detection at present in some cases, but need light always bright, and the infrared sensing switch of prior art can't be freely Infrared Detectors work and inoperative these two kinds of patterns between switch.
The utility model content:
The technical problem that the utility model solves is, overcomes existing technological deficiency, provide a kind of can be freely Infrared Detectors work and inoperative these two kinds of patterns between the infrared sensing switch that switches.
The technical scheme that the utility model provides is: the utility model provides a kind of infrared sensing switch, it comprises the power circuit connected successively, Infrared Detectors, signal processing circuit and relay, it is characterized in that: it also comprises a lock-in circuit, the output termination signal processing circuit of described lock-in circuit and the common port of relay, described lock-in circuit comprises power supply VCC, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, , the 5th resistance R 5, the first capacitor C 1, the second capacitor C 2 and comparator V1, described the first resistance R 1 and the 3rd resistance R 3 are connected between power supply VCC and ground, described the second resistance R 2 and the 4th resistance R 4 also are connected between power supply VCC and ground, described the first capacitor C 1 is in parallel with resistance R 3, the positive input terminal that terminates at comparator V1 that described the second resistance C2 and the 5th resistance R 5 are in parallel and in parallel, the other end is connected on the output of comparator V1, the positive input terminal of comparator V1 is connected on the common port of the first resistance R 1 and the 3rd resistance R 3, negative input end is connected on the common port of the second resistance R 2 and the 4th resistance R 4, output is the output OUT of lock-in circuit and is connected with the output of signal processing circuit, the resistance value ratio of described the first resistance R 1 and the 3rd resistance R 3 is larger than the resistance value ratio of the second resistance R 2 and the 4th resistance R 4.Be that R1:R3 is greater than R2:R4.
The utlity model has following advantage:
The utility model is by increasing lock-in circuit in infrared sensing switch, the output of lock-in circuit is succeeded the input of electrical equipment together with the output of signal processing circuit, during "on" position, the voltage of the negative input end of the voltage ratio comparator V1 of the positive input terminal of comparator V1 is low, comparator V1 is output as low level, lock-in circuit is inoperative, so Infrared Detectors proper function, after outage, capacitor C 1 electric discharge, if energising again in the short period, the electricity of capacitor C 1 does not also discharge, the voltage of the negative input end of the voltage ratio comparator V1 of the positive input terminal of comparator V1 is high, comparator V1 is output as high level, now no matter the signal processing circuit of Infrared Detectors is exported any signal, it is all high level that relay receives, Infrared Detectors is inoperative, if energising again in the long period, the tele-release of capacitor C 1 is over, after the energising, the voltage of the negative input end of the voltage ratio comparator V1 of the positive input terminal of comparator V1 is low, comparator is output as low level, lock-in circuit is inoperative, the Infrared Detectors proper function.By lock-in circuit is set, can realize rising between inoperative these two kinds of mode of operations and switching at Infrared Detectors by disconnecting this mode of switching on again, simple and convenient.
The accompanying drawing explanation:
Accompanying drawing 1 is the frame principle figure of the utility model infrared sensing switch;
Accompanying drawing 2 is the circuit diagram of lock-in circuit in Fig. 1.
Embodiment:
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated:
As Fig. 1, shown in Figure 2: the utility model provides a kind of infrared sensing switch, it comprises the power circuit connected successively, Infrared Detectors, signal processing circuit and relay, it is characterized in that: it also comprises a lock-in circuit, the output termination signal processing circuit of described lock-in circuit and the common port of relay, described lock-in circuit comprises power supply VCC, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, , the 5th resistance R 5, the first capacitor C 1, the second capacitor C 2 and comparator V1, described the first resistance R 1 and the 3rd resistance R 3 are connected between power supply VCC and ground, described the second resistance R 2 and the 4th resistance R 4 also are connected between power supply VCC and ground, described the first capacitor C 1 is in parallel with resistance R 3, the positive input terminal that terminates at comparator V1 that described the second resistance C2 and the 5th resistance R 5 are in parallel and in parallel, the other end is connected on the output of comparator V1, the positive input terminal of comparator V1 is connected on the common port of the first resistance R 1 and the 3rd resistance R 3, negative input end is connected on the common port of the second resistance R 2 and the 4th resistance R 4, output is the output OUT of lock-in circuit and is connected with the output of signal processing circuit, the resistance value ratio of described the first resistance R 1 and the 3rd resistance R 3 is larger than the resistance value ratio of the second resistance R 2 and the 4th resistance R 4.Be that R1:R3 is greater than R2:R4.
Power circuit wherein, Infrared Detectors, signal processing circuit and relay are custom circuit of the prior art, and infrared sensing switch of the prior art adopts sort circuit equally, does not therefore describe in detail.R1:R3>R2:R4 in lock-in circuit, in the present embodiment, R1 is 2M Ω, and R3 is 150K Ω, and R2 is 100K Ω, and R4 is 20K Ω.
Operation principle of the present utility model is: during "on" position, capacitor C 1 charging, after outage, capacitor C 1 electric discharge, if energising again in the short period, the electricity of capacitor C 1 does not also discharge, voltage as the negative input end of the voltage ratio comparator V1 of the positive input terminal of comparator V1 is high, comparator V1 is output as high level, now no matter the signal processing circuit of Infrared Detectors is exported any signal, it is all high level that relay receives, Infrared Detectors is inoperative, if energising again in the long period, the tele-release of capacitor C 1 is over, after the energising, the voltage of the negative input end of the voltage ratio comparator V1 of the positive input terminal of comparator V1 is low, comparator is output as low level, lock-in circuit is inoperative, the Infrared Detectors proper function.

Claims (1)

1. infrared sensing switch, it comprises the power circuit connected successively, Infrared Detectors, signal processing circuit and relay, it is characterized in that: it also comprises a lock-in circuit, the output termination signal processing circuit of described lock-in circuit and the common port of relay, described lock-in circuit comprises power supply VCC, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, , the 5th resistance R 5, the first capacitor C 1, the second capacitor C 2 and comparator V1, described the first resistance R 1 and the 3rd resistance R 3 are connected between power supply VCC and ground, described the second resistance R 2 and the 4th resistance R 4 also are connected between power supply VCC and ground, described the first capacitor C 1 is in parallel with resistance R 3, the positive input terminal that terminates at comparator V1 that described the second resistance C2 and the 5th resistance R 5 are in parallel and in parallel, the other end is connected on the output of comparator V1, the positive input terminal of comparator V1 is connected on the common port of the first resistance R 1 and the 3rd resistance R 3, negative input end is connected on the common port of the second resistance R 2 and the 4th resistance R 4, output is the output OUT of lock-in circuit and is connected with the output of signal processing circuit, the resistance value ratio of described the first resistance R 1 and the 3rd resistance R 3 is larger than the resistance value ratio of the second resistance R 2 and the 4th resistance R 4.
CN2013203977029U 2013-07-04 2013-07-04 Infrared induction switch Active CN203313147U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203977029U CN203313147U (en) 2013-07-04 2013-07-04 Infrared induction switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203977029U CN203313147U (en) 2013-07-04 2013-07-04 Infrared induction switch

Publications (1)

Publication Number Publication Date
CN203313147U true CN203313147U (en) 2013-11-27

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Application Number Title Priority Date Filing Date
CN2013203977029U Active CN203313147U (en) 2013-07-04 2013-07-04 Infrared induction switch

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109379562A (en) * 2018-10-26 2019-02-22 西南石油大学 A kind of passive type sight spot dynamic acquisition equipment and implementation method applied to rural tourism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109379562A (en) * 2018-10-26 2019-02-22 西南石油大学 A kind of passive type sight spot dynamic acquisition equipment and implementation method applied to rural tourism

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