CN210136530U

CN210136530U - Prompting device for toilet

Info

Publication number: CN210136530U
Application number: CN201921489627.2U
Authority: CN
Inventors: 胡金新
Original assignee: HEBEI XIANGYANG ELECTRONIC CO Ltd
Current assignee: HEBEI XIANGYANG ELECTRONIC CO Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-03-10
Anticipated expiration: 2029-09-09

Abstract

The utility model relates to a reminder for toilet use, including sensing unit, drive unit and pilot lamp D2, sensing unit include infrared correlation sensor, human infrared induction module and connect in the input of AND gate chip, drive unit includes NPN type triode Q1 and triode Q2, the output of AND gate chip connect in triode Q1's base, be connected with triode Q2's base behind triode Q1's the projecting pole series resistance R9, pilot lamp D2 establish ties between VCC and triode Q2's collecting electrode, triode Q2's projecting pole ground connection, the utility model discloses an AND gate chip judges infrared correlation sensor and human infrared induction module's output voltage signal, after two sensor unit triggers simultaneously, the pilot lamp just can light, has avoided the pilot lamp error indication that leads to because of the dirt or debris shelter from, the anti-interference capability of the prompter is improved, and the reliable use of the prompter is ensured.

Description

Prompting device for toilet

Technical Field

The utility model belongs to lavatory suggestion device field, concretely relates to reminder is used in lavatory.

Background

The general use number of public lavatory is more, and present most public lavatory has all installed solitary position compartment of squatting, every compartment is equipped with a compartment door, the outside people is difficult for the visual determination idle position of squatting after the compartment door closes, therefore the user probably need go to seek idle position one by one after getting into public lavatory, if the process that the more searching of position of squatting can be consuming time longer, it also can reduce the use impression of the user of squatting to push away the compartment door one by one in addition, consequently the lavatory prompting device should be transported and produced, whether the prompting device passes through the sensor and acquires someone in the current compartment, and remind through the pilot lamp, and the prompting device who uses commonly uses adopts infrared correlation sensor many, lead to the malfunction sensor easily when having the water dirt or having other shelters, lead to the error indication of pilot lamp, and then influence the result of use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that exists among the above-mentioned prior art, the utility model provides a prompting device is used in lavatory can realize that infrared correlation sensor and human infrared induction module's stack detects, avoids the wrong instruction condition that certain sensor failure leads to appear.

The utility model discloses a specific technical scheme be:

a reminder for use in a toilet comprises a sensing unit, a driving unit and an indicator lamp D2, wherein the sensing unit comprises an infrared correlation sensor and a human body infrared induction module, the output ends of the infrared correlation sensor and the human body infrared induction module are respectively connected with the input end of an AND gate chip, the driving unit comprises an NPN type triode Q1 and a triode Q2, the output end of the AND gate chip is connected with the base electrode of the triode Q1, the emitter electrode of the triode Q1 is connected with the base electrode of the triode Q2 after being connected with a resistor R9 in series, the indicator lamp D2 is connected between a power supply VCC and the collector electrode of the triode Q2 in series, and the emitter electrode of the triode Q2 is grounded.

The infrared correlation sensor comprises an emitting end D11 and a receiving end D12, the positive ends of the emitting end D11 and the receiving end D12 are connected with a power supply VCC through a resistor R2 and a resistor R3 respectively, the negative end of the emitting end D11 is grounded, the negative end of the receiving end D12 is grounded after being connected with a divider resistor R4 in series, and a node between the positive end of the receiving end D12 and the resistor R3 is formed into the output end of the infrared correlation sensor and is connected with the input end of an AND gate chip.

The model of the AND gate chip is 74LS 00.

The output end of the human body infrared sensing module is grounded through a resistor R1 and a capacitor C1, and the resistor R1 and the capacitor C1 are arranged in parallel.

A delay circuit is arranged between the output end of the AND gate chip and the base electrode of the triode Q1, the delay circuit comprises a resistor R6, a resistor R5, a capacitor C2 and a diode D1, the resistor R6 is connected between the AND gate chip and the triode Q1 in series, the diode D1 and the resistor R6 are connected in series in an opposite direction, the resistor R5 and the capacitor C2 are connected in series and then connected at two ends of the resistor R6 in parallel, the capacitor C2 is connected to the positive electrode side of the diode D1, and a node between the resistor R5 and the capacitor C2 is grounded.

The utility model has the advantages that:

the utility model discloses a AND gate chip judges infrared correlation sensor and human infrared induction module's output voltage signal, triggers the back simultaneously when two sensor unit, and the pilot lamp just can light, has avoided sheltering from the pilot lamp error indication that leads to because of water dirt or debris, has improved the interference killing feature of prompting device, guarantees the reliable use of prompting device.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention;

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and specific embodiments:

concrete embodiment is shown in fig. 1, the utility model relates to a reminder is used in lavatory, including sensing unit, drive unit and pilot lamp D2, sensing unit include infrared correlation sensor, sensing unit still include human infrared induction module, infrared correlation sensor and human infrared induction module's output connect respectively at the input of AND gate chip, drive unit include NPN type triode Q1 and triode Q2, the output of AND gate chip connect at triode Q1's base, be connected with triode Q2's base behind triode Q1's the projecting pole series resistance R9, pilot lamp D2 establish ties between power VCC and triode Q2's collecting electrode, triode Q2's projecting pole ground connection. The utility model discloses an operating principle is, with the help of infrared correlation sensor and human infrared induction module output level signal, trigger the back when both simultaneously, and two signals enter into the AND gate chip simultaneously, if two signals are "1", then the output of AND gate chip is high level "1", borrows this to trigger subsequent drive unit, and drive unit switches on pilot lamp D2, has avoided the sensor to be sheltered from the maloperation that leads to by debris or water dirt, improves the accuracy.

Further, the infrared correlation sensor comprises an emitting end D11 and a receiving end D12, positive ends of the emitting end D11 and the receiving end D12 are respectively connected with a power supply VCC through a resistor R2 and a resistor R3, a negative end of the emitting end D11 is grounded, a negative end of the receiving end D12 is grounded after being connected with a voltage dividing resistor R4 in series, and a junction between the positive end of the receiving end D12 and the resistor R3 is formed into an output end of the infrared correlation sensor and is connected with an input end of an and gate chip. The receiving end D12 constitutes voltage division circuit through resistance R3 and divider resistance R4, when receiving end D12 receives and blocks because the human body shelters from and ends, through resistance R3 pull-up for infrared correlation sensor's output is high level signal to the outside, divider resistance R4 adopt 0 ohm resistance or 1 ohm resistance, mainly play the guard action.

Further, the model of the and gate chip is 74LS 00.

Furthermore, the output end of the human body infrared sensing module is grounded through a resistor R1 and a capacitor C1, and the resistor R1 and the capacitor C1 are arranged in parallel. An RC delay circuit is formed by the resistor R1 and the capacitor C1, so that better filtering performance is guaranteed, a delay effect is achieved by charging and discharging of the capacitor C1, and the phenomenon that the high-frequency starting of the indicator lamp is caused due to the fact that the human body infrared induction module is excessively sensitive is avoided.

Further, a delay circuit is arranged between the output end of the and gate chip and the base of the triode Q1, the delay circuit comprises a resistor R6, a resistor R5, a capacitor C2 and a diode D1, the resistor R6 is connected in series between the and gate chip and the triode Q1, the diode D1 is connected in series with the resistor R6 in an opposite direction, the resistor R5 is connected in series with the capacitor C2 and then connected in parallel at two ends of the resistor R6, the capacitor C2 is connected at the positive electrode side of the diode D1, and the junction between the resistor R5 and the capacitor C2 is grounded. When the output end of the and gate chip 74LS00 is at a high level, the capacitor C2 is charged first, when the voltage of the capacitor C2 rises gradually, the transistor Q1 is turned on to provide a turn-on voltage for the subsequent transistor Q2, when the output of the and gate chip 74LS00 is at a low level, that is, when a user leaves the compartment, the capacitor C2 discharges slowly through the diode D1 and the resistor R5, so that the base voltage of the transistor Q1 decreases slowly, and the time is adjusted through the capacity of the capacitor C2, so that the discontinuous trigger signal when the user is about to leave the compartment to finish clothes is not likely to cause frequent on-off of the indicator light, and the indicator light is ensured to be used safely for a long time.

Claims

1. The utility model provides a reminder is used in lavatory, includes sensing unit, drive unit and pilot lamp D2, the sensing unit include infrared correlation sensor, its characterized in that: the sensing unit further comprises a human body infrared sensing module, the output ends of the infrared correlation sensor and the human body infrared sensing module are respectively connected with the input end of an AND gate chip, the driving unit comprises an NPN type triode Q1 and a triode Q2, the output end of the AND gate chip is connected with the base electrode of a triode Q1, the emitting electrode of the triode Q1 is connected with the base electrode of a triode Q2 after being connected with a resistor R9 in series, the indicator lamp D2 is connected between a power supply VCC and the collecting electrode of the triode Q2 in series, and the emitting electrode of the triode Q2 is grounded.

2. A reminder for use in a toilet according to claim 1, wherein: the infrared correlation sensor comprises an emitting end D11 and a receiving end D12, the positive ends of the emitting end D11 and the receiving end D12 are connected with a power supply VCC through a resistor R2 and a resistor R3 respectively, the negative end of the emitting end D11 is grounded, the negative end of the receiving end D12 is grounded after being connected with a divider resistor R4 in series, and a node between the positive end of the receiving end D12 and the resistor R3 is formed into the output end of the infrared correlation sensor and is connected with the input end of an AND gate chip.

3. A reminder for use in a toilet according to claim 1, wherein: the model of the AND gate chip is 74LS 00.

4. A reminder for use in a toilet according to claim 1, wherein: the output end of the human body infrared sensing module is grounded through a resistor R1 and a capacitor C1, and the resistor R1 and the capacitor C1 are arranged in parallel.

5. A reminder for use in a toilet according to claim 1, wherein: a delay circuit is arranged between the output end of the AND gate chip and the base electrode of the triode Q1, the delay circuit comprises a resistor R6, a resistor R5, a capacitor C2 and a diode D1, the resistor R6 is connected between the AND gate chip and the triode Q1 in series, the diode D1 and the resistor R6 are connected in series in an opposite direction, the resistor R5 and the capacitor C2 are connected in series and then connected at two ends of the resistor R6 in parallel, the capacitor C2 is connected to the positive electrode side of the diode D1, and a node between the resistor R5 and the capacitor C2 is grounded.