CN207262728U - A kind of electric heater low-power consumption detects display system - Google Patents

Abstract

The utility model discloses a low power consumption detection and display system for an electric water heater. The system is composed of a control box and an electric water heater control system, through the communication connection between the control box and the electric water heater control system and the setting of a power supply detection circuit and a power supply module. , the control system detects the data of each sensor by intermittent sleep and wake-up, communicates with the control box, and displays the information on the control box. The utility model is not affected by the factors of the detection equipment itself, and there will be no false detection or missing detection, detection data fluctuations, etc., and at the same time, it does not need to build an in-out waterway, saves electric energy, and reduces the detection cost of the electric water heater automatic detection device. The utility model can display the inner tank water temperature after the electric water heater is turned off, and can also move and control the water heater to replace the function of the remote controller.

Description

A low power consumption detection and display system for electric water heaters

technical field

The utility model relates to the technical field of electric water heaters, in particular to the technical field of detection and display during the use of the electric water heater after the power is cut off.

Background technique

In the existing technology, when the water flow sensor is used to detect the user's water consumption, the communication module sends an instruction to the leak protection to trip the leakage protection, and the electric water heater is disconnected at the third level; the user is guaranteed to bathe safely, but after the electric water heater is powered off, the inside cannot be displayed. Tank water temperature, the user does not know the remaining hot water in the tank, and there is a bad experience;

At the same time, some families install the water heater outside the bathroom, so that the user not only cannot know the water temperature of the inner tank during bathing, but also cannot operate the water heater.

Therefore, after the three poles of the electric water heater in the prior art are broken, the water temperature cannot be displayed; when the electric water heater is installed outdoors, it is also difficult to operate the water heater, and the working state of the electric water heater cannot be judged.

Utility model content

The purpose of this utility model is to provide a low power consumption detection system for electric water heaters that users can still understand the working status of electric water heaters and judge the operation of water heaters when the power supply of the whole machine is disconnected from the water.

In order to achieve the above purpose, the utility model patent adopts the following technical solutions:

A low power consumption detection and display system for an electric water heater, the system is composed of a control box and an electric water heater control system, the electric water heater control system includes a hardware power-on reset module, an automatic reset leakage protection plug, a leakage protection communication module, a single-chip microcomputer And its peripheral circuit and water flow detection circuit are composed of a low-power inner tank temperature sensor detection circuit, a communication module, a power supply module, a relay module, a thermal circuit breaker module, and a power supply detection circuit; it is characterized in that,

The control box is composed of a single-chip microcomputer and peripheral circuits, a communication module, a shell, an interactive display screen or buttons, and a power supply module;

The electric water heater control system also includes a low-power inner tank temperature sensor detection circuit, a communication module, a power supply module, a relay module, a thermal circuit breaker module, and a power supply detection circuit;

The electric water heater control system communicates with the control box via the communication module,

The power module of the electric water heater control system is connected to the power line through the thermal circuit breaker through the cable. At the same time, there is a battery module or capacitor module that can be charged and discharged inside the power module. The power module of the control box can be connected to the mains power supply or use battery power;

The inner tank temperature sensor detection circuit is connected with the main control chip of the electric water heater control system. The power supply port of the temperature detection circuit is provided by the power supply I/O port of the main control chip, and the I/O port is detected while the power supply I/O port is powered Collect the temperature signal;

When the user uses the hot water of the water heater, the water flow detection circuit outputs a square wave to the control system. After the control system judges, the leakage protection communication module communicates with the leakage protection to trip the leakage protection. The three poles of the electric water heater power supply are disconnected, and the power detection circuit detects After the power supply is disconnected, the power supply module supplies power to the control system;

After the power is disconnected, the control system enters the low-power power-down sleep mode, automatically wakes up after a period of sleep, and detects the working status of each sensor.

As a further description of the above solution, the communication module adopts a data line for communication, a Bluetooth communication module, a WIFI communication module, an infrared light communication module, an RF radio frequency module, a ZigBee communication module or a Modbus communication module.

Further, the control box is equipped with an interactive display screen and buttons, the display screen displays the current working status of the electric water heater in real time, and the working mode of the electric water heater can be set within an effective control distance through the buttons.

The control box of the utility model has a signal strength detection function, and the signal strength is replaced by the number of displayed grids. When the user moves the display module beyond the coverage of the wireless communication module, it will display zero grids or crosses.

This practical control system detects the data of each sensor in the way of intermittent sleep and wake-up, and communicates with the control box, and displays the information on the control box. When the user uses the hot water of the water heater, the water flow detection circuit outputs a square wave to the control system. After the control system judges, the leakage protection communication module communicates with the leakage protection, so that the leakage protection trips, and the three poles of the electric water heater power supply are disconnected. After the power detection circuit detects that the power supply is disconnected, the power supply module supplies power to the control system;

After the power is disconnected, the control system enters the low-power power-down sleep mode, automatically wakes up after a period of sleep, and detects the working status of each sensor;

After the control system wakes up, the control system will give the power supply I/O port a high level, so that the liner temperature detection circuit is energized, the current passes through the temperature probe (thermistor) to GND, and the detection I/O reads the voltage of the thermistor , the specific temperature value is obtained after conversion. After the temperature is detected, the power I/O port and the detection I/O port are set to a high-impedance state, and the temperature detection circuit stops working, and the control system enters the sleep mode again. Avoid the power consumption of the temperature detection circuit for a long time;

The control system detects the state of the inner tank temperature sensor at regular intervals. If the temperature value changes are detected twice adjacently, the control system sends a signal to the control box, and the control box refreshes the display of the current temperature value. If the temperature value does not change, the control system continues to sleep and wake up detection.

Further, the sleep time is set to 10s, and each sensor that detects the working state includes a water flow sensor and an inner tank temperature sensor.

Compared with the prior art, an intelligent automatic detection system for an electric water heater provided by the utility model patent has the following beneficial effects:

The utility model develops the control box and the electric water heater control system; the power of the whole machine is disconnected when the user is using water, so that the user can bathe in a safe environment, and at the same time, the electric water heater control system is powered by a farad capacitor to achieve the purpose of saving electric energy. The control system detects the data of each sensor by intermittent sleep and wake-up, communicates with the control box, and displays the information on the control box.

The control box of the utility model can be installed on the wall or moved, and can control the working state of the water heater within an effective distance, so that users can have better use experience.

It is not affected by the own factors of the testing equipment, and there will be no false detection, missing detection, detection data fluctuations, etc., and it is not necessary to build an automatic detection device for electric water heaters that saves power and reduces detection costs.

The device can display the water temperature of the inner tank after the water outlet of the electric water heater is cut off, and can also move and control the water heater to replace the function of the remote controller.

Description of drawings

Fig. 1 is a block diagram of the utility model.

Fig. 2 is a schematic flow chart of the system method of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model patent is further described:

As shown in Figure 1 and Figure 2, the electric water heater low power consumption detection and display system of the present invention is made up of control box and low power consumption display detection system; Used display screen or key, power supply module; The low power consumption display detection system is composed of a low power consumption liner temperature sensor detection circuit, a communication module, a relay module, a thermal circuit breaker module, a power detection circuit, and a hardware power-on It consists of a reset module, an automatic reset leakage protection plug, a leakage protection communication module, a single-chip microcomputer and its peripheral circuits, and a water flow detection circuit. The low power consumption display detection system communicates with the control box via a communication module, which can be a data line for communication, or a Bluetooth communication module, or a WIFI communication module, or an infrared communication module, or an RF radio frequency module, or ZigBee communication module, or Modbus communication module. The power module of the control box is connected to the power line through the thermal circuit breaker through the cable, and there is a rechargeable battery module or capacitor module inside the power module; when the power is turned on, the power module supplies power to the electric water heater control system and simultaneously supplies The internal storage battery module or capacitor is charged. After the power supply is disconnected, the power supply module supplies power to the electric water heater control system through the storage battery or capacitor.

Through the above-mentioned control box and low power consumption display detection system, the low power consumption detection method can be realized as follows: the inner tank temperature sensor detection circuit is connected with the main control chip of the electric water heater control system, and the power supply port of the temperature detection circuit is controlled by the main control chip. The power supply I/O port of the chip is provided, and the detection I/O port collects the temperature signal while the power supply I/O port supplies power; after the low power consumption display detection system wakes up, the system gives the power supply I/O port a high level , so that the liner temperature detection circuit is energized, the current passes through the temperature probe (thermistor) to GND, and the detection I/O reads the voltage of the thermistor to obtain a specific temperature value after conversion. After the temperature is detected, the After the power supply I/O port and detection I/O port are set to high-impedance state, the temperature detection circuit stops working, and the control system enters the sleep mode again, and so on, which can avoid the power consumption of the temperature detection circuit for a long time; the system detects every 10s Once the state of the inner tank temperature sensor is detected, if the temperature value changes are detected twice adjacently, the control system will send a signal to the control box, and the control box will refresh the display of the current temperature value. Continue to sleep wake detection.

When the user uses the hot water of the water heater, the water flow detection circuit of the low power consumption display detection system outputs a square wave to the detection system. When the three poles are disconnected, the power supply detection circuit detects that the power supply is disconnected, and the power supply module supplies power to the control system; after the power supply is disconnected, the control system enters a low-power power-down sleep mode, and automatically wakes up after a period of sleep, for example, wakes up every 10s Once, and detect the working status of each sensor, such as water flow sensor, inner tank temperature sensor;

When there is a water flow signal, the communication module sends an instruction to the leakage protection to trip the leakage protection. After the three poles of the electric water heater are cut off, the farad capacitor supplies power to the control system. The two ends of the inner tank temperature sensor detection circuit are connected to the main control chip I/O Above, the power supply I/O port of the main control chip supplies power to the detection circuit, and at the same time, the detection I/O port collects temperature signals, sends signals to the control box through the communication module, and the control box displays the water temperature of the inner tank through the interactive interface.

The interactive display screen and buttons on the control box, the display screen displays the current working status of the electric water heater in real time, and the working mode of the electric water heater can be set within the effective control distance through the buttons; the power module of the control box can be connected to the mains for power supply , or use battery power; the control box is provided with a signal strength detection function, and the signal strength is replaced by the number of displayed grids. When the user moves the display module beyond the coverage of the wireless communication module, zero grids or crosses will be displayed.

The above is only the preferred embodiment of the utility model, it should be pointed out that, for those of ordinary skill in the art, without departing from the inventive concept of the utility model, some deformations and improvements can also be made. Belong to the protection scope of the utility model.

Claims (4)

1. a kind of electric heater low-power consumption detects display system, which is made of control box and control system of electric water heater, institute State control system of electric water heater include hardware electrification reset module, can automatically reset leakage protecting plug, leakage protect communication module, Microcontroller and its peripheral circuit, water flow detection circuit, be by the liner temperature sensor detection circuit of low-power consumption, communication module, Power module, relay module, thermal circuit beraker module, power sense circuit；It is characterized in that,

The control box is by microcontroller and peripheral circuit, communication module, shell, interactive display screen or button, power supply mould Block forms；

The control system of electric water heater further includes the liner temperature sensor detection circuit, communication module, power supply mould of low-power consumption Block, relay module, thermal circuit beraker module, power sense circuit；

Control system of electric water heater communicates with control box through communication module,

The power module of control system of electric water heater is connected by cable through heat witch with power cord, while power module Inside have can discharge and recharge battery module or capacitance module, the power module of control box can connect mains-supplied, or use battery Power supply；

Liner temperature sensor detection circuit is connected with the main control chip of control system of electric water heater, the confession of temperature sensing circuit Power port is provided by I/O mouthfuls of the power supply of main control chip, detects I/O mouthfuls while power supply I/O confessions are electric and temperature signal is adopted Collection；

When user uses the hot water of water heater, water flow detection circuit exports square wave to control system of electric water heater, electric heater Control system protects communication module through leakage after judging and communicates with leakage guarantor, leakage is protected tripping, and three pole of electric heater power supply disconnects, power supply inspection Slowdown monitoring circuit detects that power supply is powered after disconnecting by power module to control system of electric water heater；

After power supply disconnects, control system of electric water heater enters low-power consumption power down sleep mode, and dormancy automatically wakes up afterwards for a period of time, And detect the working status of each sensor；

After control system of electric water heater wakes up, control system of electric water heater gives power supply I/O mouthfuls of high level, makes liner temperature detection electric Road is powered, and electric current detects I/O by reading the voltage of thermistor, actual temp is obtained after converted through thermistor to GND Value, after temperature has been detected, temperature sensing circuit is stopped after I/O mouthfuls of I/O mouthfuls of power supply and detection are arranged to high-impedance state, electricity Water heater control system is again introduced into sleep mode, so repeatedly, can avoid the electricity of the long charged consumption of temperature sensing circuit Energy；

Control system of electric water heater detects the state of a liner temperature sensor at regular intervals, if adjacent detect twice To temperature value change, control system give control box send signal, control box refresh current temperature value display, if it is adjacent twice Detect that temperature value does not change then control system and continues dormancy awakening detection.

2. electric heater low-power consumption according to claim 1 detects display system, it is characterised in that the communication module is adopted Led to the data cable of communication, bluetooth communication, WIFI communication modules, infrared communication module, RF radio-frequency modules, ZigBee Believe module or Modbus communication modules.

3. electric heater low-power consumption according to claim 1 or 2 detects display system, it is characterised in that the control box Display screen and button equipped with interaction, the working status of the current electric heater of display screen real-time display, and existed by button The operating mode of electric heater can be set in effective control distance.

4. electric heater low-power consumption according to claim 1 or 2 detects display system, it is characterised in that the control box Signal strength detection function is come with, signal strength is replaced to show lattice number, when user's mobile display module exceeds channel radio When believing the coverage of module, zero lattice or cross will be shown.