Protective circuit of heating device and heating device

Abstract

The utility model discloses a protection circuit of a heating device and the heating device. Comprising a human body detection circuit, a time delay circuit and a bath heater circuit, the human body detection circuit is electrically connected with the time delay circuit, and the time delay circuit is electrically connected with the bath heater circuit; an induction chip in the human body detection circuit adopts a Doppler effect sensor module RD627, and the Doppler effect sensor module RD627 is electrically connected with a microwave transmitting antenna and a radio frequency transmitting head; the human body detection circuit further comprises a capacitor C1, a capacitor C2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, two operational amplifier triodes S8050 and a diode 1N4148. According to the utility model, human body detection is realized through the human body detection circuit, timing is carried out through the time delay circuit after human body detection, warning is carried out when time is up, and the safety of personnel in the bathroom is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of heating equipment, more specifically, especially relate to a protection circuit and heating device of heating device. BACKGROUND

[0002] The heating device can be classified into gas heating device, electric heating heating device, boiler heating device and electric wall-hanging stove heating according to different heating medium and heating principle.

[0003] The heating device directly converts electric energy or other chemical energy into heat energy, and transmits heat through radiation, convection contact and other modes, so that the user can move in a suitable temperature environment, and the air humidity is reduced in most cases.

[0004] However, the prior art has some problems: when a person enters the bathroom, if he does not leave the bathroom after a set time, he may fall down or even lose the ability to move, so an alarm sound is emitted, which may cause danger to the person in the bathroom, therefore, we propose a protection circuit and heating device of heating device. UTILITY MODEL CONTENT

[0005] In view of the problems in the prior art, the utility model aims to provide a protection circuit and heating device of heating device, which detects the human body through a human body detection circuit, and after detecting the human body, a delay circuit is used for timing, and when the time is up, an alarm is given to improve the safety of the person in the bathroom.

[0006] To achieve the above object, the utility model provides the following technical scheme: a protection circuit and heating device of heating device, comprising a human body detection circuit, a delay circuit and a bathroom heater circuit, the human body detection circuit is electrically connected with the delay circuit, the delay circuit is electrically connected with the bathroom heater circuit;

[0007] The inductive chip in the human body detection circuit adopts a Doppler effect sensor module RD627, a microwave transmitting antenna is electrically connected to the Doppler effect sensor module RD627, and a radio frequency transmitting head is electrically connected to the Doppler effect sensor module RD627.

[0008] The human body detection circuit further comprises a capacitor C1, a capacitor C2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, two operational amplifier triodes S8050 and a diode 1N4148;The capacitor C2 and the resistor R8 constitute an RC filter, the diode 1N4148 is electrically connected with the base of one of the operational amplifier triodes S8050, the resistor R7 and the capacitor C1 constitute a coupler, and the resistor R5 and the resistor R6 constitute a monostable delay circuit.

[0009] Specific, the human body detection circuit and the delay circuit are electrically connected with a voltage stabilizing tube, the voltage stabilizing tube is electrically connected with a rectifier, the rectifier is electrically connected with a protector, and the protector is electrically connected with a total switch box.

[0010] Specific, the shower circuit is also electrically connected with the protector, and the shower circuit comprises two heating blocks and a wind warming motor.

[0011] Specific, one side of the two heating blocks and the wind warming motor is respectively electrically connected with a switch S3, a switch S5 and a switch S4, and the switch S3, the switch S5 and the switch S4 are combined into a linkage switch.

[0012] Specific, the delay circuit comprises a chip CD4060, the chip CD4060 is electrically connected with resistors R1 and R2, the resistors R1 and R2 are connected in parallel, one end of the resistor R1 is electrically connected with a capacitor C, the capacitor C and the resistor R2 are electrically connected with a switch S2, and the chip CD4060 is electrically connected with a relay at the upper end.

[0013] Specific, the capacitor C and the resistor R2 form a monostable trigger, and the relay is electrically connected between the shower circuit and the protector.

[0014] Specific, the human body detection circuit and the delay circuit are electrically connected with an operational amplifier triode S8050 and a resistor, and the operational amplifier triode S8050 is electrically connected with a loudspeaker.

[0015] A heating device comprises a heating device, and a protection circuit is arranged in the heating device.

[0016] The technical effects and advantages of the present application are as follows:

[0017] The human body detection circuit is electrically connected to the circuit of the heating device, and when the shower or the linear heater is turned on, the human body detection circuit generates a detection signal to detect whether a person has entered the bathroom, and a delay circuit is started, the delay circuit records the time when the person enters the bathroom, and when the preset time is reached, the shower or the linear heater needs to be restarted to extend the time, otherwise the calculation time of the delay circuit is reached, and an alarm is started to notify the family members or the smart home.

[0018] The human body detection circuit and the delay circuit are used for safety detection of the person entering the bathroom, so as to prevent the old people or children from falling down and causing safety hazards when taking a bath.

[0019] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference made to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a schematic view of the human body detection circuit provided by the present application;

[0021] Fig. 2 is a schematic view of the delay circuit provided by the present application;

[0022] Fig. 3 is a schematic view of the bath heater circuit provided by the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] As shown in Figs. 1-3 the present application provides a protection circuit of a heating device, which comprises a human body detection circuit, a delay circuit and a bath heater circuit, the human body detection circuit is electrically connected with the delay circuit, the delay circuit is electrically connected with the bath heater circuit;

[0025] The inductive chip in the human body detection circuit adopts a Doppler effect sensor module RD627, a microwave transmitting antenna is electrically connected on the Doppler effect sensor module RD627, and a radio frequency transmitting head is electrically connected on the Doppler effect sensor module RD627.

[0026] The human body detection circuit further comprises a capacitor C1, a capacitor C2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, two operational amplifier triodes S8050 and a diode 1N4148;The capacitor C2 and the resistor R8 constitute an RC filter, the diode 1N4148 is electrically connected with the base of one of the operational amplifier triodes S8050, the resistor R7 and the capacitor C1 constitute a coupler, and the resistor R5 and the resistor R6 constitute a monostable delay circuit.

[0027] In this embodiment, preferably, the human body detection circuit and the delay circuit are commonly electrically connected with a voltage stabilizing tube, a rectifier is electrically connected on the voltage stabilizing tube, a protector is electrically connected on the rectifier, and the protector is electrically connected with a total switch box;

[0028] It should be noted that the human body detection circuit and the delay circuit are powered by the voltage stabilizing tube and the rectifier, the stability of the human body detection circuit and the delay circuit is maintained, and the entire system circuit is protected by the protector to prevent leakage danger.

[0029] In the embodiment, preferably, the bathroom heater circuit is further electrically connected with the protector, the bathroom heater circuit comprises two heating blocks and a warm air motor, and the two heating blocks and the warm air motor are connected in parallel.

[0030] It should be noted that the bathroom heater circuit is directly electrically connected with the protector and is protected, heat is generated by the two heating blocks, and the heat is discharged by the warm air motor, so that the heat is evenly distributed in the bathroom, and the heating block is a PTC ceramic heating block.

[0031] In the embodiment, preferably, one side of the two heating blocks and the warm air motor is respectively electrically connected with a switch S3, a switch S5 and a switch S4, and the rear end of the switch S3, the switch S5 and the switch S4 is electrically connected with a combined linkage switch.

[0032] It should be noted that the two heating blocks and the warm air motor are respectively precisely controlled by the switch S3, the switch S5 and the switch S4, and the two heating blocks and the warm air motor are synchronously controlled by the combined linkage switch.

[0033] In the embodiment, preferably, the delay circuit comprises a chip CD4060, the chip CD4060 is electrically connected with a resistor R1 and a resistor R2, the resistor R1 and the resistor R2 are connected in parallel, one end of the resistor R1 is electrically connected with a capacitor C, the capacitor C and the resistor R2 are electrically connected with a switch S2, and the upper end of the chip CD4060 is electrically connected with a relay.

[0034] It should be noted that the delay circuit is used for timing control of the heating device, the delay circuit is used for setting time, and if there is no action in the timing module within a certain time, the circuit is automatically turned off to prevent the temperature in the bathroom from continuously rising and protect the safety of people in the bathroom.

[0035] In the embodiment, preferably, the capacitor C and the resistor R2 constitute a monostable trigger, and the relay is electrically connected between the bathroom heater circuit and the protector.

[0036] It should be noted that the monostable trigger is used for controlling and adjusting the delay circuit, so that the delay circuit can realize timing control after receiving the signal of the human body detection circuit.

[0037] In the embodiment, the human body detection circuit and the delay circuit are electrically connected with an operational amplifier S8050 and a resistor, and the operational amplifier S8050 is electrically connected with a loudspeaker.

[0038] It should be noted that, in order to realize the alarm reminding when the delay circuit controls the on-off of the relay, the alarm processing is realized through the loudspeaker.

[0039] A heating device comprises a heating apparatus, and a protection circuit is arranged in the heating apparatus.

[0040] The specific operation process of the present application is as follows:

[0041] In use, the human body detection circuit and the delay circuit are powered and operated through the protector, the rectifier and the voltage stabilizing tube, and after the human body detection circuit is powered on, the Doppler effect sensor module RD627 emits microwave signals to the surrounding space through the radio frequency emission head, and the return signals are received through the external ring-shaped microwave emission antenna; when no one enters the bathroom, the sixth pin outputs a constant 6V direct current voltage, and the subsequent circuit of the operational amplifier S8050 works in a monitoring state due to no signal input; when someone enters the bathroom, the external ring-shaped microwave emission antenna will receive the microwave signals reflected by the human body, the microwave signals are processed by the Doppler effect sensor module RD627, and a pulse voltage signal proportional to the distance between the human body and the external ring-shaped microwave emission antenna is output from the sixth pin; the pulse voltage signal is coupled to the base of the operational amplifier S8050 through the capacitor C2, is output from the collector of the operational amplifier S8050 after low-frequency amplification, is coupled to the base of the operational amplifier S8050 through the capacitor C1, and makes the operational amplifier S8050 in a conduction state; the potential of the second pin of the chip CD4060 sharply decreases, the monostable trigger in the chip CD4060 flips into a temporary stable state, the third pin outputs a high level, drives the operational amplifier S8050, and the voltage output from the emitter of the operational amplifier S8050 supplies power to the loudspeaker, the loudspeaker gives an alarm, at the same time, the control relay is disconnected to stop power supply, the bathroom heater circuit is powered off, and the two heating blocks and the air heating motor stop running, thereby realizing the safety protection of the person in the bathroom.

[0042] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A protective circuit for a heating device, characterized in that Including human body detection circuit, delay circuit and bath heater circuit, the human body detection circuit is connected with the delay circuit, the delay circuit is connected with the bath heater circuit; The inductive chip in the human body detection circuit adopts a Doppler effect sensor module RD627, a microwave transmitting antenna is connected with the Doppler effect sensor module RD627, and a radio frequency transmitting head is connected with the Doppler effect sensor module RD627. The human body detection circuit further includes a capacitor C1, a capacitor C2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, two operational amplifier triodes S8050 and a diode 1N4148; the capacitor C2 and the resistor R8 form an RC filter, the diode 1N4148 is connected with the base of one of the operational amplifier triodes S8050, the resistor R7 and the capacitor C1 form a coupler, and the resistor R5 and the resistor R6 form a monostable delay circuit.

2. A protective circuit for a heating device as claimed in claim 1, characterized in that: The human body detection circuit and the delay circuit are connected with a voltage stabilizing tube, the voltage stabilizing tube is connected with a rectifier, the rectifier is connected with a protector, and the protector is connected with a total switch box.

3. A protective circuit for a heating device as claimed in claim 2, characterized in that: The bath heater circuit is further connected with the protector, and the bath heater circuit includes two heating blocks and a wind warming motor.

4. A protective circuit for a heating device as claimed in claim 3, characterized in that: One side of the two heating blocks and the wind warming motor is respectively connected with a switch S3, a switch S5 and a switch S4, and the switch S3, the switch S5 and the switch S4 are combined into a linkage switch.

5. The protective circuit for a heating device according to claim 1, wherein: The delay circuit includes a chip CD4060, the chip CD4060 is connected with a resistor R1 and a resistor R2, the resistor R1 and the resistor R2 are connected in parallel, one end of the resistor R1 is connected with a capacitor C, the capacitor C and the resistor R2 are connected with a switch S2, and the chip CD4060 is connected with a relay at the upper end.

6. A protective circuit for a heating device as defined in claim 5, characterized in that: The capacitor C and the resistor R2 form a monostable trigger, and the relay is connected between the bath heater circuit and the protector.

7. The protective circuit for a heating device according to claim 1, wherein: The human body detection circuit and the delay circuit are connected with an operational amplifier triode S8050 and a resistor, and the operational amplifier triode S8050 is connected with a loudspeaker.

8. A heating device, applied to the protection circuit of the heating device in any one of claims 1-7, characterized in that: The heating device is provided with a protection circuit.

Images