CN212391593U

CN212391593U - Emergency monitoring circuit and emergency monitoring device

Info

Publication number: CN212391593U
Application number: CN202020261378.8U
Authority: CN
Inventors: 连少霖; 孙福成; 郑宗将
Original assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Current assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2021-01-22
Anticipated expiration: 2030-03-05

Abstract

The application belongs to the field of emergency circuits, and provides an emergency monitoring circuit and an emergency monitoring device, the alternating current voltage signal provided by the power supply is converted into a direct current voltage signal through the rectifying circuit, then a constant voltage power supply circuit is adopted to generate a constant voltage power supply signal, an emergency power supply circuit outputs an emergency power supply signal according to the constant voltage power supply signal, a power failure detection circuit detects a direct current voltage signal to generate a power failure detection signal, a main control circuit generates an enable control signal and a load control signal according to the power failure detection signal, a booster circuit outputs a working voltage signal according to the enable control signal, to supply power to the main control circuit, the radio frequency circuit sends a radio frequency control signal to the load module according to the load control signal, the emergency power supply is started by controlling the load module, and the problems that the existing emergency circuit is untimely in emergency monitoring and complex in monitoring circuit are solved.

Description

Emergency monitoring circuit and emergency monitoring device

Technical Field

The application belongs to the field of emergency circuits, and particularly relates to an emergency monitoring circuit and an emergency monitoring device.

Background

Along with the improvement of the living standard of people, the types and the quantity of electric appliances in the families of people are more and more, and in order to avoid potential safety hazards such as electric appliance faults and the like which often occur when power failure or outage happen accidentally, an emergency circuit is usually arranged in the circuit to prevent accidental safety accidents from occurring when power failure or outage happen accidentally.

However, the existing emergency circuit usually adopts a central control station to send an emergency signal to a load through a line, and has the problems of untimely emergency monitoring, complex monitoring line and the like.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide an emergent monitoring circuit and emergent monitoring devices, aim at solving the problem that emergent monitoring that present emergent circuit exists is untimely, the monitoring circuitry is complicated.

A first aspect of the embodiments of the present application provides an emergency monitoring circuit, is connected with power supply and at least one load module, the emergency monitoring circuit includes:

the rectifying circuit is connected with the power supply and is used for converting an alternating-current voltage signal provided by the power supply into a direct-current voltage signal;

the constant voltage power supply circuit is connected with the rectifying circuit and used for receiving the direct current voltage signal and generating a constant voltage power supply signal according to the direct current voltage signal;

the emergency power supply circuit is connected with the constant voltage power supply circuit and used for receiving the constant voltage power supply signal and outputting an emergency power supply signal according to the constant voltage power supply signal;

the power failure detection circuit is connected with the rectification circuit and used for acquiring the direct current voltage signal and detecting the direct current voltage signal to generate a power failure detection signal;

the main control circuit is connected with the power failure detection circuit and used for receiving the power failure detection signal and generating an enabling control signal and a load control signal according to the power failure detection signal;

the boost circuit is respectively connected with the main control circuit, the constant voltage power supply circuit and the emergency power supply circuit and used for receiving the enable control signal and outputting a working voltage signal according to the enable control signal so as to supply power to the main control circuit; and

and the radio frequency circuit is connected with the main control circuit and the load module and is used for receiving the load control signal and sending a radio frequency control signal to the load module according to the load control signal so as to control the load module to start the emergency power supply.

Optionally, the power down detection circuit includes:

the voltage division unit is connected with the rectifying circuit and used for receiving the direct-current voltage signal and performing voltage division processing on the direct-current voltage signal to generate a voltage division signal;

and the switch unit is connected with the voltage division unit and the booster circuit and used for generating the power failure detection signal according to the voltage division signal.

Optionally, the emergency power supply circuit includes:

the battery unit is used for providing an emergency power supply signal;

and the charging management unit is connected with the constant voltage power supply circuit and used for receiving the constant voltage power supply signal and charging the battery unit according to the constant voltage power supply signal.

This application second aspect provides an emergent monitoring devices, emergent monitoring devices includes:

a power supply port;

at least one load module; and

the emergency monitoring circuit according to any one of the preceding claims, wherein the emergency monitoring circuit is connected to the power supply port and the load module respectively.

Optionally, the load module is any one of an LED light source, an alarm, a fan, a television, a washing machine, a water heater and an electric cooker.

Optionally, the load module includes:

the load rectifying circuit is connected with the power supply and is used for converting an alternating current voltage signal provided by the power supply into a load direct current voltage signal;

the load constant-voltage power supply circuit is connected with the load rectifying circuit and used for receiving the load direct-current voltage signal and generating a load constant-voltage power supply signal according to the load direct-current voltage signal;

the load emergency power supply circuit is connected with the load constant voltage power supply circuit and used for receiving the load constant voltage power supply signal and outputting a load emergency power supply signal according to the load constant voltage power supply signal;

the load power failure detection circuit is connected with the load rectifying circuit and is used for acquiring the load direct-current voltage signal and detecting the load direct-current voltage signal to generate a load power failure detection signal;

the load master control circuit is connected with the load power-down detection circuit and used for receiving the load power-down detection signal and generating a load enable control signal and an emergency circuit feedback signal according to the load power-down detection signal;

the load voltage boosting circuit is respectively connected with the load main control circuit, the load constant voltage power supply circuit and the load emergency power supply circuit, and is used for receiving the load enabling control signal, the load emergency power supply signal and the load constant voltage power supply signal and outputting a working voltage signal according to the load enabling control signal so as to supply power to the load main control circuit; and

and the load radio frequency circuit is connected with the load main control circuit and the emergency monitoring circuit and used for receiving the emergency circuit feedback signal and sending a radio frequency feedback signal to the emergency monitoring circuit according to the emergency circuit feedback signal.

The embodiment of the application provides an emergency monitoring circuit and an emergency monitoring device, alternating voltage signals provided by a power supply are converted into direct voltage signals through a rectifying circuit, then a constant voltage power supply circuit is adopted to generate constant voltage power supply signals, the emergency power supply circuit outputs emergency power supply signals according to the constant voltage power supply signals, a power failure detection circuit detects the direct voltage signals to generate power failure detection signals, a main control circuit generates enable control signals and load control signals according to the power failure detection signals, a boosting circuit outputs working voltage signals according to the enable control signals to supply power to the main control circuit, the radio frequency circuit sends radio frequency control signals to a load module according to the load control signals, the emergency power supply is started by the load module, and the problems that the existing emergency circuit is not timely in emergency monitoring and the monitoring circuit is complex are solved.

Drawings

Fig. 1 is a schematic circuit structure diagram of an emergency monitoring circuit provided in an embodiment of the present application;

fig. 2 is a schematic circuit structure diagram of a power down detection circuit provided in an embodiment of the present application;

fig. 3 is a schematic circuit structure diagram of an emergency power supply circuit provided in an embodiment of the present application;

fig. 4 is a schematic circuit structure diagram of a rectifier circuit provided in an embodiment of the present application;

fig. 5 is a schematic circuit diagram of a constant voltage power supply circuit according to an embodiment of the present disclosure;

fig. 6 is a schematic circuit structure diagram of a main control circuit according to an embodiment of the present disclosure;

fig. 7 is a schematic circuit diagram of a voltage boost circuit according to an embodiment of the present disclosure;

fig. 8 is a schematic circuit diagram of a load module according to an embodiment of the present disclosure.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The embodiment of the present application provides an emergency monitoring circuit, as shown in fig. 1, the emergency monitoring circuit in this embodiment is connected to a power supply 11 and at least one load module 12, specifically, the emergency monitoring circuit in this embodiment includes: the power supply circuit comprises a rectifying circuit 21, a constant voltage power supply circuit 22, an emergency power supply circuit 23, a power failure detection circuit 24, a main control circuit 25, a booster circuit 26 and a radio frequency circuit 17. The rectifying circuit 21 is connected to the power supply 11 and is configured to convert an ac voltage signal provided by the power supply 11 into a dc voltage signal; the constant voltage power supply circuit 22 is connected with the rectifying circuit 21 and is used for receiving the direct current voltage signal and generating a constant voltage power supply signal according to the direct current voltage signal; the emergency power supply circuit 23 is connected with the constant voltage power supply circuit 22, and is used for receiving the constant voltage power supply signal and outputting an emergency power supply signal according to the constant voltage power supply signal; the power failure detection circuit 24 is connected with the rectification circuit 21 and is used for acquiring the direct-current voltage signal and detecting the direct-current voltage signal to generate a power failure detection signal; the main control circuit 25 is connected with the power-down detection circuit 24, and is configured to receive the power-down detection signal and generate an enable control signal and a load control signal according to the power-down detection signal; the boost circuit 26 is respectively connected to the main control circuit 25, the constant voltage power supply circuit 22 and the emergency power supply circuit 23, and is configured to receive the enable control signal, the emergency power supply signal and the constant voltage power supply signal, and output a working voltage signal according to the enable control signal to supply power to the main control circuit 25; the radio frequency circuit 27 is connected to the main control circuit 25 and the load module 12, and configured to receive the load control signal and send a radio frequency control signal to the load module 12 according to the load control signal, so as to control the load module 12 to start the emergency power supply.

In this embodiment, when the power supply 11 is powered on, the power-down detection circuit 24 collects the dc voltage signal in the rectifying circuit 21 and detects whether the dc voltage signal is powered down, if it is detected that the dc voltage signal is powered down, that is, the voltage of the dc voltage signal drops or the voltage of the dc voltage signal is 0V, the power-down detection circuit sends a corresponding power-down detection signal to the main control circuit 25, at this time, the main control circuit 25 sends an enable control signal to the voltage boost circuit 26, the voltage boost circuit 26 is started, and generates a boost signal to power the main control circuit 25, at the same time, the main control circuit 25 sends a load control signal to the radio frequency circuit 27, the radio frequency circuit 27 converts the load control signal into a corresponding radio frequency control signal, and sends the radio frequency control signal to all load modules 12 which are in communication connection with the emergency monitoring circuit, so that the plurality of load modules 12 start the emergency power supply, the problems of untimely emergency monitoring and complex monitoring circuit of the emergency circuit are solved.

In one embodiment, referring to fig. 2, the power down detection circuit 24 in this embodiment includes a voltage dividing unit 241 and a switching unit 242, where the voltage dividing unit 241 is connected to the rectification circuit 21, and is configured to receive the dc voltage signal and divide the dc voltage signal to generate a divided voltage signal; the switch unit 242 is connected to the voltage dividing unit 241 and the voltage boosting circuit 26, and is configured to generate the power down detection signal according to the voltage dividing signal.

In this embodiment, the voltage dividing unit 241 detects the dc voltage signal and divides the dc voltage signal to generate a corresponding divided voltage signal, the switch unit 242 is turned on or off based on the divided voltage signal to generate a corresponding power failure detection signal Etx, for example, if the dc voltage signal is normally output, the divided voltage signal generated by the voltage dividing unit 241 is a high level signal, the switch unit 242 is turned on, the power failure detection signal is a low level signal, the main control circuit 25 does not start an emergency response based on the power failure detection signal, sends a corresponding enable control signal to the voltage boosting circuit 26, and the voltage boosting circuit 26 selects a constant voltage power supply signal as an input voltage according to the enable control signal and adjusts the voltage of the input voltage to supply power to the main control circuit 25.

Further, if the output of the dc voltage signal is abnormal, the voltage-dividing signal generated by the voltage-dividing unit 241 is a low-level signal, the switch unit 242 is turned off, the power-down detection signal is a high-level signal, the main control circuit 25 starts an emergency response based on the power-down detection signal, and sends a corresponding enable control signal to the voltage-boosting circuit 26, and the voltage-boosting circuit 26 selects an emergency power supply signal as an input voltage according to the enable control signal, and performs voltage regulation on the emergency power supply signal to supply power to the main control circuit 25, so as to ensure that the main control circuit 25 can still normally operate when the power supply 11 is powered down, and remotely control the load module 12 through the radio frequency circuit 27.

In one embodiment, referring to fig. 2, the voltage dividing unit 241 includes: a third resistor R3, a fourth resistor R4, a fourth capacitor C4 and a first voltage regulator ZD 1; a first end of the third resistor R3 is connected to the rectifying circuit 21, a second end of the third resistor R3, a cathode of the first regulator ZD1, a first end of the fourth resistor R4, and a first end of the fourth capacitor C4 are connected to the switching unit 242 in common, and an anode of the first regulator ZD1, a second end of the fourth capacitor C4, and a second end of the fourth resistor R4 are connected to ground in common.

In this embodiment, the third resistor R3 and the fourth resistor R4 form a voltage dividing circuit, which divides a dc voltage signal into a plurality of voltage-stabilizing circuits, and the first voltage-stabilizing tube ZD1 stabilizes the voltage of the divided voltage signal, so as to prevent the transistor in the switching tube unit 242 from being burned out due to an excessively high dc voltage signal output by the rectifying circuit 21.

In one embodiment, referring to fig. 2, the switching unit 242 includes; a fifth resistor R5 and a first switch tube Q1; the first end of the fifth resistor R5 is connected to the boost circuit 26, the second end of the fifth resistor R5 and the current input end of the first switch tube Q1 are commonly connected to the main control circuit 25, the control end of the first switch tube Q1 is connected to the voltage dividing unit 241, and the current output end of the first switch tube Q1 is grounded.

In this embodiment, the voltage of the power-down detection signal is controlled by controlling the voltage of the control terminal of the first switch tube Q1, when the power supply 11 outputs normally, the control terminal of the first switch tube Q1 is a high-level signal, the voltage of the power-down detection signal is a low-level signal, and when the power supply 11 outputs abnormally, the control terminal of the first switch tube Q1 is a low-level signal, and the voltage of the power-down detection signal is a high-level signal.

In this embodiment, the first end of the fifth resistor R5 is connected to the voltage output terminal VCC1 of the voltage boost circuit 26, because the voltage boost circuit 26 adopts the constant voltage power supply signal and the emergency power supply signal as the input voltage, when the constant voltage power supply signal stops outputting, the emergency power supply signal is the input voltage, when the constant voltage power supply signal normally outputs, the constant voltage power supply signal is the input voltage, thereby ensuring that the power failure detection module 24 is not affected by power failure, real-time monitoring is performed on the direct current voltage signal output by the rectifier circuit 21, and the problem of untimely monitoring is avoided.

In one embodiment, the first switch Q1 is an NPN transistor.

In one embodiment, referring to fig. 3, the emergency power supply circuit 23 includes a battery unit 231 and a charging management unit 232, wherein the battery unit 231 is used for providing an emergency power supply signal; the charging management unit 232 is connected to the constant voltage power supply circuit 22, and configured to receive the constant voltage power supply signal and charge the battery unit 231 according to the constant voltage power supply signal.

In the present embodiment, the charging management unit 232 charges the battery unit 231 based on the received constant voltage power supply signal.

In one embodiment, referring to fig. 3, the battery unit 231 includes a battery pack BAT1, the positive terminal of the battery pack BAT1 is connected to the voltage output terminal of the charge management unit 232, and the negative terminal of the battery pack BAT1 is connected to ground.

In this embodiment, the battery pack BAT1 serves as an emergency power supply for providing an emergency power supply signal when the power supply 11 is powered down.

In one embodiment, battery pack BAT1 may be a lithium battery pack.

In one embodiment, referring to fig. 3, the charging management unit includes: the charging management chip U3, the second switch tube Q2, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a fifth diode D5, a sixth diode D6, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a second inductor L2 and a thermistor NT; an anode of the fifth diode D5 and a current input terminal of the second switch Q2 are commonly connected to the constant voltage power supply circuit 22, a cathode of the fifth diode D5 is connected to a first terminal of the sixteenth resistor R16, a current output terminal of the second switch Q2, a first terminal of the seventeenth resistor R17, a first terminal of the eighteenth resistor R18 and a first terminal of the ninth capacitor C9 are commonly connected to the input terminal IN of the charge management chip U3, a second terminal of the eighteenth resistor R18 is connected to an anode of the sixth diode D6, a cathode of the sixth diode D6, a control terminal of the second switch Q2 and a second terminal of the seventeenth resistor D17 are commonly connected to the charge state display pin STAT of the charge management chip U3, a charge time pin of the charge management chip U3 is connected to a first terminal of the tenth capacitor C10, a pull-down signal pin CEL of the charge management chip U3 and a second terminal of the tenth capacitor C10 are commonly connected to ground, a NTC pin of the charge management chip U3 is protected by the NTC 365637, The second end of the sixteenth resistor R16, the first end of the thermistor NT and the first end of the twenty-first resistor R21 are connected to ground, the second end of the thermistor NT, the second end of the twenty-first resistor R21 and the first end of the eleventh capacitor C11 are connected to ground, the voltage output pin BAT of the charge management chip U3 and the positive electrode of the battery unit 231 are connected to the boost circuit 26, the charge current detection pin RS of the charge management chip, the first end of the second inductor L2 and the first end of the nineteenth resistor R19 are connected to the first end of the twentieth resistor R20, the second end of the nineteenth resistor R19 and the second end of the twentieth resistor R20 are connected to the voltage output pin BAT of the charge management chip U3, and the signal switching pin LX of the charge management chip U3 is connected to the second end of the second inductor L2.

In one embodiment, the second switching transistor Q2 may be an N-type MOS transistor.

In one embodiment, the model of the charge management chip may be SY 6912.

In one embodiment, referring to fig. 4, the rectifying circuit 21 includes: the circuit comprises a first resistor R1, a first capacitor C1, a first diode D1, a second capacitor C2, a second resistor R2, a first inductor L1, a third capacitor C3 and a rectifying chip U1; a first end of the first resistor R1 is connected to a first end of the power supply 11, a second end of the first resistor R1 and a first end of the first capacitor C1 are connected to a first input AC1 of the rectifier chip U1, a second input AC2 of the rectifier chip U1 and a second end of the first capacitor C1 are connected to a second end of the power supply 11, a first output V + of the rectifier chip U1 and an anode of the first diode D2 are connected to the power-down detection circuit 24, a cathode of the first diode D1, a first end of the second capacitor C2 and a first end of the second resistor R2 are connected to a first end of the first inductor L1, a second end of the first inductor L1, a second end of the second resistor R2 and a first end of the third capacitor C3 are connected to the constant-voltage power supply circuit 22, and a second end of the third capacitor C3 and a first end of the second capacitor C3683 are connected to a first end of the constant-voltage supply circuit 22, The second end of the second capacitor C3 and the second output end of the rectifier chip U1 are connected to ground in common.

In one embodiment, the rectifier chip U1 may be a rectifier bridge.

In one embodiment, referring to fig. 5, the constant voltage supply circuit 22 includes: a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a second diode D2, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a third diode D3, a fourth diode D4, a first transformer T1 and a power management chip U2; a first end of the sixth resistor R6, a first end of the sixth capacitor C6, a first end of the thirteenth resistor R13, and a first input end of the first transformer T1 are commonly connected to the rectifying circuit 21, a second end of the sixth resistor C6, a second end of the thirteenth resistor R13, and a first end of the twelfth resistor R12 are commonly connected, a second end of the twelfth resistor R12 is connected to a cathode of the third diode D3, an anode of the third diode D3 and a second input end of the first transformer T1 are commonly connected to an output terminal DRAIN of the power management chip U2, a second end of the sixth resistor R6, a first end of the seventh resistor R7, and a first end of the fifth capacitor C5 are commonly connected to a power supply terminal VCC of the power management chip U2, a second end of the seventh resistor R7 is connected to a cathode of the diode D2, a second end of the fifth capacitor C5 and a ground terminal of the power management chip 2 are commonly connected to a GND terminal of the power management chip U632, the voltage sampling terminal VSEN of the power management chip U2 and the first terminal of the eighth resistor R8 are commonly connected to the first terminal of the ninth resistor R9, the second terminal of the ninth resistor R9 is grounded, the current sampling terminal ISEN of the power management chip U2 and the first terminal of the tenth resistor R10 are commonly connected to the first terminal of the eleventh resistor R11, the second terminal of the tenth resistor R10 and the second terminal of the eleventh resistor R11 are commonly connected to ground, the second terminal of the eighth resistor R8 and the anode of the second diode D2 are commonly connected to the first output terminal of the first transformer T1, the second output terminal of the first transformer T2 and the anode of the fourth diode D4 are commonly connected to the first terminal of the seventh capacitor C7, the second terminal of the seventh capacitor C7 and the first terminal of the fourteenth resistor R6 are commonly connected, the cathode of the fourth diode D4, the first terminal of the eighth capacitor C27 and the fifteenth resistor R3623 are commonly connected to the emergency power supply circuit 3623, the third output terminal of the first transformer T1, the second terminal of the eighth capacitor C8, and the second terminal of the fifteenth capacitor C15 are connected to ground in common.

In one embodiment, the power management chip U2 has a model number SY 50131A.

In one embodiment, referring to fig. 6, the main control circuit 25 includes a main control chip U4 and an eighteenth capacitor C18, wherein a power supply pin VDD of the main control chip U4 and a first end of the eighteenth capacitor C18 are commonly connected to a voltage output pin VCC1 of the voltage boost circuit 26, an output end of the main control chip U4 is connected to the radio frequency circuit 27, an enable signal output pin EN of the main control chip U4 is connected to an enable signal input terminal EN of the voltage boost circuit 26, a power down detection signal input pin Etx of the main control chip U4 is connected to the power down detection circuit 24, and a ground pin VSS of the main control chip U4 and a second end of the eighteenth capacitor C18 are commonly connected to ground.

In one embodiment, the model of the master control chip U4 may be HR7P 179.

In one embodiment, the radio frequency circuit 27 may be a radio frequency chip.

In one embodiment, referring to fig. 7, the boost circuit 26 in the present embodiment includes: the power management chip comprises a power management chip U5, a third inductor L3, a twelfth capacitor C12, a twenty-third resistor C23, a twenty-fourth resistor R24, a thirteenth capacitor C13, a fourteenth capacitor C14, a sixth diode D6, a seventh diode D7, a fifteenth capacitor C15, a sixteenth capacitor C16, a seventeenth capacitor C17 and a voltage reduction chip U6; a first end of the third inductor L3, an input pin IN of the power management chip U5, and a first end of the twelfth capacitor C12 are commonly connected to the emergency power supply circuit 23, a second end of the third inductor L3 is commonly connected to the signal switching pin LX of the power management chip U5, an output pin OUT of the power management chip U5, a first end of the twenty-third resistor R23, a first end of the thirteenth capacitor C13, a first end of the fourteenth capacitor C14, and an anode of the sixth diode D6 are commonly connected, an enable signal pin EN of the power management chip U5 is commonly connected to an enable signal output terminal of the main control circuit 25, a feedback signal pin FB of the power management chip U5, a second end of the twenty-third resistor R23, a second end of the thirteenth capacitor C13, and a first end of the twenty-fourth resistor R24 are commonly connected, a second end of the fourteenth capacitor C14, a second end of the twenty-fourth resistor R24, a second end of the twelfth capacitor C12, and a ground pin 5 of the power management chip U5 are commonly connected to GND, a cathode of the sixth diode D6, a cathode of the seventh diode D7, and a first end of the fifteenth capacitor C15 are commonly connected to the input pin IG of the buck chip U6, an output pin O of the buck chip U6, a first end of the sixteenth capacitor C16, and a first end of the seventeenth capacitor C17 are commonly connected to the power source terminal of the main control circuit 25, and a second end of the fifteenth capacitor C15, a second end of the sixteenth capacitor C16, and a second end of the seventeenth capacitor C17 are commonly connected to ground.

In this embodiment, the power management chip U5 and its peripheral circuits are used to boost the emergency power supply signal provided by the emergency power supply circuit 23, and output the signal to the buck chip U6 through the sixth diode D6, meanwhile, the constant voltage power supply circuit 22 provides a constant voltage power supply signal to the buck chip U6 through the seventh diode D7, when the power supply 11 is powered down, the constant voltage power supply circuit 22 stops outputting, at this time, the enable control signal provided by the main control circuit 25 is a high level signal, the enable control signal enables the power management chip U5 to start, the boost processing is performed on the emergency power supply signal provided by the emergency power supply circuit 23, and the boost processing is provided to the buck chip U6, so as to output a corresponding working voltage signal to power the main control circuit 25, when the power supply 11 is working normally, the enable control signal provided by the main control circuit 25 is a low level signal, the enable control signal enables the power management chip U5 to stop working, at this time, the constant voltage power supply circuit 22 normally operates, and the constant voltage power supply signal is output to the buck chip U6 through the seventh diode D7 as an input voltage of the buck chip U6, so that a corresponding operating voltage signal is output to supply power to the main control circuit 25.

In one embodiment, the power management chip U5 has a model number SY 7072A.

In an embodiment, the present embodiment provides an emergency monitoring device, and in particular, the emergency monitoring device in the embodiment includes: a power supply port; at least one load module; and the emergency monitoring circuit according to any one of the embodiments, wherein the emergency monitoring circuit is respectively connected with the power supply power port and the load module.

In one embodiment, the load module is any one of an LED light source, an alarm, a fan, a television, a washing machine, a water heater, and an electric cooker.

In one embodiment, referring to fig. 8, the load module includes a load rectifying circuit 31, a load constant voltage power supply circuit 32, a load emergency power supply circuit 33, a load power failure detection circuit 34, a load main control circuit 35, a load boosting circuit 36, and a load radio frequency circuit 37; specifically, the load rectifying circuit 31 is connected to the power supply 11, and is configured to convert an ac voltage signal provided by the power supply 11 into a load dc voltage signal; the load constant voltage power supply circuit 32 is connected with the load rectifying circuit 31 and is used for receiving the load direct current voltage signal and generating a load constant voltage power supply signal according to the load direct current voltage signal; the load emergency power supply circuit 33 is connected with the load constant voltage power supply circuit 32, and is configured to receive the load constant voltage power supply signal and output a load emergency power supply signal according to the load constant voltage power supply signal; the load power-down detection circuit 34 is connected to the load rectification circuit 31, and is configured to collect the load dc voltage signal and detect the load dc voltage signal to generate a load power-down detection signal; the load main control circuit 35 is connected to the load power-down detection circuit 34, and is configured to receive the load power-down detection signal and generate a load enable control signal and an emergency circuit feedback signal according to the load power-down detection signal; the load boost circuit 36 is respectively connected to the load main control circuit 35, the load constant voltage power supply circuit 32, and the load emergency power supply circuit 33, and is configured to receive the load enable control signal, the load emergency power supply signal, and the load constant voltage power supply signal, and output a working voltage signal according to the load enable control signal to supply power to the load main control circuit 35; the load radio frequency circuit 37 is connected to the load main control circuit 35 and the emergency monitoring circuit 20, and is configured to receive the emergency circuit feedback signal and send a radio frequency feedback signal to the emergency monitoring circuit according to the emergency circuit feedback signal.

In an embodiment, the load power-down detection circuit 34 samples a load dc voltage signal output by the load rectification circuit 31, and generates a load power-down detection signal according to a sampling result, when the load power-down detection signal detects that the load rectification circuit 31 has a power-down phenomenon, the load main control circuit 35 sends a load enable control signal to the load voltage boost circuit 36 based on the load power-down detection signal to control the energy storage battery in the load emergency power supply circuit 33 to start, the energy storage battery provides a load emergency power supply signal, the load voltage boost circuit 36 uses the load emergency power supply signal as an input voltage to perform a voltage conversion process on the input voltage to drive the load main control circuit 35 to operate, further, the load voltage boost circuit 36 is further used to drive the load to operate, so that the load can still operate normally when the power supply 11 stops supplying power, the user loss caused by sudden power failure of the load is avoided.

In one embodiment, the circuit structure of the load rectifier circuit 31 may be the same as that of the rectifier circuit 21 in any of the above embodiments; the load constant voltage supply circuit 32 may be the same as the circuit configuration of the constant voltage supply circuit 22 in any of the above embodiments; the load emergency supply circuit 33 may have the same circuit structure as the emergency supply circuit 23 in any of the above embodiments; the load power-down detection circuit 34 may have the same circuit structure as the power-down detection circuit 24 in any of the above embodiments; the load master circuit 35 may have the same circuit structure as the master circuit 25 in any of the above embodiments; the load boost circuit 36 may be the same as the circuit structure of the boost circuit 26 in any of the embodiments described above; the load radio frequency circuit 37 may have the same circuit structure as the radio frequency circuit 37 in any of the above embodiments.

In one embodiment, the emergency monitoring circuit 20 may be the emergency monitoring circuit of any of the embodiments described above.

In one embodiment, the load rf circuit 37 and the emergency monitoring circuit 20 are paired by a predetermined wireless transmission protocol, such as zigbee, BLE, WIFI, and the like.

Further, an emergency monitoring circuit 20 can establish communication connection with a plurality of load radio frequency circuits 37 simultaneously, for example, establish communication connection with a plurality of load radio frequency circuits 37 through APP to adopt an emergency monitoring circuit 20 to realize the control to a plurality of load modules, reach the purpose of remote control load.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

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

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. An emergency monitoring circuit, is connected with power supply and at least one load module, its characterized in that, emergency monitoring circuit includes:

the boost circuit is respectively connected with the main control circuit, the constant voltage power supply circuit and the emergency power supply circuit, and is used for receiving the enable control signal, the emergency power supply signal and the constant voltage power supply signal and outputting a working voltage signal according to the enable control signal so as to supply power to the main control circuit; and

2. The emergency monitoring circuit of claim 1, wherein the power down detection circuit comprises:

3. The emergency monitoring circuit of claim 1, wherein the emergency power supply circuit comprises:

the battery unit is used for providing an emergency power supply signal;

4. The emergency monitoring circuit of claim 2, wherein the voltage divider unit comprises: the first resistor, the second resistor, the third capacitor and the fourth capacitor are connected in series;

the first end of the third resistor is connected with the rectifying circuit, the second end of the third resistor, the cathode of the first voltage-regulator tube, the first end of the fourth resistor and the first end of the fourth capacitor are connected to the switch unit in a sharing mode, and the anode of the first voltage-regulator tube, the second end of the fourth capacitor and the second end of the fourth resistor are connected to the ground in a sharing mode.

5. The emergency monitoring circuit of claim 2, wherein the switching unit comprises; a fifth resistor and a first switch tube;

the first end of the fifth resistor is connected with the boost circuit, the second end of the fifth resistor and the current input end of the first switch tube are connected to the main control circuit in a shared mode, the control end of the first switch tube is connected with the voltage division unit, and the current output end of the first switch tube is grounded.

6. The emergency monitoring circuit of claim 1, wherein the rectifier circuit comprises: the circuit comprises a first resistor, a first capacitor, a first diode, a second capacitor, a second resistor, a first inductor, a third capacitor and a rectifying chip;

the first end of the first resistor is connected with the first end of the power supply, the second end of the first resistor and the first end of the first capacitor are connected with the first input end of the rectifying chip in common, the second input end of the rectifying chip and the second end of the first capacitor are connected to the second end of the power supply, the first output end of the rectifying chip and the anode of the first diode are connected to the power-down detection circuit in common, the cathode of the first diode, the first end of the second capacitor and the first end of the second resistor are connected to the first end of the first inductor in common, the second end of the first inductor, the second end of the second resistor and the first end of the third capacitor are connected to the constant voltage power supply circuit, and the second end of the third capacitor, the second end of the second capacitor and the second output end of the rectifying chip are connected to the ground in common.

7. The emergency monitoring circuit of claim 1, wherein the constant voltage supply circuit comprises: the power supply comprises a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a second diode, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a third diode, a fourth diode, a first transformer and a power supply management chip;

the first end of the sixth resistor, the first end of the sixth capacitor, the first end of the thirteenth resistor and the first input end of the first transformer are connected to the rectifying circuit in common, the second end of the sixth capacitor, the second end of the thirteenth resistor and the first end of the twelfth resistor are connected in common, the second end of the twelfth resistor is connected to the cathode of the third diode, the anode of the third diode and the second input end of the first transformer are connected to the output end of the power management chip in common, the second end of the sixth resistor, the first end of the seventh resistor and the first end of the fifth capacitor are connected to the power supply end of the power management chip in common, the second end of the seventh resistor and the cathode of the diode are connected, and the second end of the fifth capacitor and the ground end of the power management chip are connected to ground in common, the voltage sampling end of the power management chip and the first end of the eighth resistor are connected to the first end of the ninth resistor, the second end of the ninth resistor is grounded, the current sampling end of the power management chip and the first end of the tenth resistor are connected to the first end of the eleventh resistor, the second end of the tenth resistor and the second end of the eleventh resistor are connected to the ground, the second end of the eighth resistor and the anode of the second diode are connected to the first output end of the first transformer, the second output end of the first transformer and the anode of the fourth diode are connected to the first end of the seventh capacitor, the second end of the seventh capacitor is connected to the first end of the fourteenth resistor, the cathode of the fourth diode, the first end of the eighth capacitor and the first end of the fifteenth resistor are connected to the emergency power supply circuit, the third output end of the first transformer, the second end of the eighth capacitor and the second end of the fifteenth capacitor are connected to the ground in common.

8. An emergency monitoring device, comprising:

a power supply port;

at least one load module; and

the emergency monitoring circuit of any one of claims 1 to 7, the emergency monitoring circuit being connected to the power supply port and the load module, respectively.

9. The emergency monitoring device of claim 8, wherein the load module is any one of an LED light source, an alarm, a fan, a television, a washing machine, a water heater, and an electric cooker.

10. The emergency monitoring device of claim 8, wherein the load module comprises: