CN202119119U - Control system of water heater - Google Patents
Control system of water heater Download PDFInfo
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- CN202119119U CN202119119U CN2010206091656U CN201020609165U CN202119119U CN 202119119 U CN202119119 U CN 202119119U CN 2010206091656 U CN2010206091656 U CN 2010206091656U CN 201020609165 U CN201020609165 U CN 201020609165U CN 202119119 U CN202119119 U CN 202119119U
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Abstract
The utility model relates to a control system of a water heater, which comprises a main power supply control switch, a microprocessor, a current detection device and a real-time clock. The control system of the water heater is characterized in that the microprocessor is connected with an electric quantity metering circuit, a power supply reverse connection and earth wire live detection circuit, an electric leakage protection circuit, a power supply control switch, a display device and a temperature sensor respectively. A real-time timer is arranged inside the microprocessor. The control system integrates control of functions of power control, electric quantity metering, power supply reverse connection and earth wire live detection, electric leakage protection and the like into the control of the microprocessor. Accordingly, the control system is simple in structure and convenient to operate and improves reliability.
Description
Technical field
The utility model relates to a kind of water heater, especially relates to a kind of control system of water heater.
Background technology
Electrical equipment such as " electronic type " electric heater is because convenient and practical having obtained used widely, and the reason of its rise is the bigger improvement of electric heater aesthetic appearance at present, the time-of-use tariffs system of implementing in China in addition." electronic type " temperature controller can be realized the self-timing operation of electric heater, and " mechanical type " temperature controller is not accomplished this point.Therefore the development prospect of " electronic type " electric heater is become better and better, but the control panel design of " electronic type " electric heater is very many at present, and the water heater control panel of different model needs different designs to adapt to the different costs requirement; Bring much more very troubles to supplier management, and will accomplish that electric weight shows earth leakage protective; Ground wire detects; Magnesium rod detection or the like sophisticated functions, the cost of The whole control plate is relatively more expensive, and main cause is that each function all needs different chips to realize; Add the peripheral circuit of each chip, the The whole control plate is very complicated.And because adopted too many components and parts, reliability also must reduce, and repair rate improves.
Summary of the invention
The utility model mainly is the technical problem that solves that the control system of existing in prior technology water heater is too complicated, cost is too high, operation is cumbersome etc., and a kind of simple in structure, easy to operate, water heater control system that reliability is high is provided.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: a kind of water heater control system; Comprise main power source gauge tap, microprocessor, current sensing means, real-time clock; It is characterized in that described microprocessor links to each other with electric quantity metering circuit, power supply reversal connection and ground wire electrified detection circuit, leakage protection circuit, power control switch, display unit and temperature sensor respectively, microprocessor is built-in with real-time timer.There are power supply control, electric quantity metering, power supply reversal connection in this control system the control of functions such as the detection, earth leakage protective of ground wire electrification all to combine in the Guaranteed of microprocessor.Make that its structure is very simple, operation is very easy, and improved its reliability.
As preferably; Described electric quantity metering circuit is provided with an electric quantity metering module; This electric quantity metering module links to each other with electric current, the voltage signal input of described microprocessor, and the live wire of described power circuit is provided with a relay, and the signal input part of relay links to each other with microprocessor.Microprocessor can be judged at that time power consumption and power according to the input of current and voltage signals; If the scope that electric current, voltage and actual power can bear greater than socket; Microprocessor just control relay cuts off circuit, to reach the protective effect to water heater.
As preferably; Described power supply reversal connection and ground wire electrified detection circuit comprise sample circuit; Described sample circuit comprises zero line sampling end and ground wire sampling end; The signal output part of sample circuit links to each other with an analog-digital converter, and the signal output part of analog-digital converter links to each other with a voltage effective value counting circuit, and the voltage effective value counting circuit links to each other with a digital comparator with described microprocessor respectively; Digital comparator links to each other with a threshold register with described microprocessor respectively, and threshold register links to each other with described microprocessor.Voltage difference between zero line N and ground wire PE is sampled through sample circuit; Alternating voltage after the sampling is directly given analog-digital converter, and the transformation result of analog-digital converter gets into the voltage effective value counting circuit, obtains voltage effective value; This value compares with threshold register; This comparison procedure realizes by digital comparator, if voltage effective value greater than the value in the threshold register, digital comparator can be exported control signal and give microprocessor (microprocessor); Microprocessor is corresponding does the indication of reporting to the police, and also can directly output to the outside and do power down process.Microprocessor can read simultaneously the magnitude of voltage of voltage effective value counting circuit, converts this value the size of virtual voltage into, shows through display unit.
As preferably; Described leakage protection circuit comprises an electric current mutual inductance circuit; Current transformer links to each other with the zero-power line live wire respectively through sample circuit; Current transformer and gain amplifier, mould-number demodulator, digital filter and voltage effective value calculator are linked in sequence successively; The voltage effective value calculator links to each other with digital comparator and described microprocessor respectively, and microprocessor links to each other with described digital comparator with a threshold register respectively, and microprocessor control signal output links to each other with the control circuit of described relay.Sample circuit is gathered the current signal of zero line, live wire, is obtained by current transformer, and current transformer changes it at voltage signal input gain amplifier; The output of gain amplifier connects the analog-digital demodulation device, and the analog-digital demodulation device is a data signal with analog signal conversion, and carries out Filtering Processing by digital filter; Process result gets into the voltage effective value counting circuit, obtains voltage effective value, and this value compares with threshold register; This comparison procedure is realized by digital comparator; If voltage effective value is greater than the value in the threshold register, microprocessor can be exported control signal control circuit breaker and carry out power operation, accomplishes the power-off protection to power supply.Device can carry out the setting value of threshold register under little.The calculating of voltage effective value only needs the half period of 50HZ power supply signal just passable, so the time only needs 10MS.
As preferably, described power control switch is provided with a remote signal receiving circuit.
As preferably; Described microprocessor links to each other with a magnesium rod testing circuit; This magnesium rod testing circuit is provided with sample circuit; Sample circuit links to each other with inner bag with the magnesium rod respectively through two current detecting ends, and sample circuit, mould-number demodulator, digital filter and voltage effective value calculator are linked in sequence successively, and the voltage effective value calculator links to each other with digital comparator and described microprocessor respectively; Microprocessor links to each other with described digital comparator with a threshold register respectively, and the microprocessor signals output links to each other with described display unit.Have an electric current between magnesium rod and the inner bag, and can change along with the variation of magnesium rod consumption, sample circuit is gathered the current signal between magnesium rod and the inner bag; And with its input analog-digital demodulation device, the analog-digital demodulation device is a data signal with analog signal conversion, and carries out Filtering Processing by digital filter; Process result gets into the voltage effective value counting circuit; Obtain voltage effective value, this value compares with threshold register, and this comparison procedure is realized by digital comparator; If voltage effective value exceeds the value in the threshold register, microprocessor can be exported control signal and by display unit the consumption of magnesium rod reported to the police.Make the user can in time understand the situation of magnesium rod, and effectively handle.
As preferably, described microprocessor links to each other with flow pulse testing circuit, the adaptive switched clock circuit of crystal oscillator failure of oscillation, power supply switch circuit, temperature detection holding circuit respectively.The flow pulse testing circuit promptly can detect the pulse width of flow sensor, thereby judges discharge; Whether have pulse the go forward side by side accumulative total of horizontal pulse, can realize the calculating of water consumption if can detect again.These calculated values provide microprocessor to do analysis and Control and use.Whether crystal oscillator failure of oscillation automatic switchover clock circuit can detect crystal oscillating circuit and break down, and when breaking down, automatically switches to the inner annular oscillator.The temperature sensor that the temperature detection holding circuit adopts chip internal to carry carries out temperature monitors in real time, when detected temperatures surpasses certain threshold value, can export relevant index signal, and this signal also can be given microprocessor, lets microprocessor do correlated judgment.
As preferably, described power supply switch circuit links to each other with an AC power with a battery respectively.Power supply switch circuit can freely switch between the voltage-stabilized power supply that battery and AC power obtain: during when alternating current power failure, chip switches to powered battery; When alternating current, chip automatically switches to the voltage-stabilized power supply that AC power obtains.In the power supply switch circuit battery voltage detection is arranged in addition, cross when low, can offer the microprocessor index signal when cell voltage.
The beneficial effect that brings of the utility model is; The technical problem that the control system that has solved the existing in prior technology water heater is too complicated, cost is too high, operation is cumbersome etc. has realized a kind of simple in structure, easy to operate, water heater control system that reliability is high.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model;
Accompanying drawing 2 is a kind of structural representations of the electric quantity metering circuit of the utility model;
Accompanying drawing 3 is the power supply reversal connection of the utility model and a kind of structural representation of ground wire electrified detection circuit;
Accompanying drawing 4 is a kind of structural representations of the leakage protection circuit of the utility model;
Accompanying drawing 5 is a kind of structural representations of the magnesium rod testing circuit of the utility model;
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment: like Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5; The utility model is a kind of water heater control system; Comprise main power source gauge tap, microprocessor, current sensing means, real-time clock; Described microprocessor links to each other with electric quantity metering circuit, power supply reversal connection and ground wire electrified detection circuit, flow pulse testing circuit, the adaptive switched clock circuit of crystal oscillator failure of oscillation, power supply switch circuit, temperature detection holding circuit, leakage protection circuit, magnesium rod testing circuit, power control switch, display unit and temperature sensor respectively, and microprocessor is built-in with real-time timer.Described power control switch is provided with a remote signal receiving circuit.Described temperature sensor is located in the water heater liner.Described power supply switch circuit links to each other with an AC power with a battery respectively.Described electric quantity metering circuit is provided with an electric quantity metering module; This electric quantity metering module links to each other with electric current, the voltage signal input of described microprocessor; The live wire of described power circuit is provided with a relay, and the signal input part of relay links to each other with microprocessor.Described power supply reversal connection and ground wire electrified detection circuit comprise sample circuit; Described sample circuit comprises zero line sampling end and ground wire sampling end; The signal output part of sample circuit links to each other with an analog-digital converter; The signal output part of analog-digital converter links to each other with a voltage effective value counting circuit; The voltage effective value counting circuit links to each other with a digital comparator with described microprocessor respectively, and digital comparator links to each other with a threshold register with described microprocessor respectively, and threshold register links to each other with described microprocessor.Described leakage protection circuit comprises an electric current mutual inductance circuit; Current transformer links to each other with the zero-power line live wire respectively through sample circuit; Current transformer and gain amplifier, mould-number demodulator, digital filter and voltage effective value calculator are linked in sequence successively; The voltage effective value calculator links to each other with digital comparator and described microprocessor respectively; Microprocessor links to each other with described digital comparator with a threshold register respectively, and microprocessor control signal output links to each other with the control circuit of described relay.Described microprocessor links to each other with a magnesium rod testing circuit; This magnesium rod testing circuit is provided with sample circuit; Sample circuit links to each other with inner bag with the magnesium rod respectively through two current detecting ends; Sample circuit, mould-number demodulator, digital filter and voltage effective value calculator are linked in sequence successively; The voltage effective value calculator links to each other with digital comparator and described microprocessor respectively, and microprocessor links to each other with described digital comparator with a threshold register respectively, and the microprocessor signals output links to each other with described display unit.
So at the bottom of the utlity model has simple in structure, cost, characteristic such as easy to operate, reliability height.
Claims (9)
1. water heater control system; Comprise main power source gauge tap, microprocessor, current sensing means, real-time clock; It is characterized in that described microprocessor links to each other with electric quantity metering circuit, power supply reversal connection and ground wire electrified detection circuit, leakage protection circuit, power control switch, display unit and temperature sensor respectively, microprocessor is built-in with real-time timer.
2. a kind of water heater control system according to claim 1; It is characterized in that described electric quantity metering circuit is provided with an electric quantity metering module; This electric quantity metering module links to each other with electric current, the voltage signal input of described microprocessor; The live wire of described power circuit is provided with a relay, and the signal input part of relay links to each other with microprocessor.
3. a kind of water heater control system according to claim 1; It is characterized in that described power supply reversal connection and ground wire electrified detection circuit comprise sample circuit; Described sample circuit comprises zero line sampling end and ground wire sampling end; The signal output part of sample circuit links to each other with an analog-digital converter, and the signal output part of analog-digital converter links to each other with a voltage effective value counting circuit, and the voltage effective value counting circuit links to each other with a digital comparator with described microprocessor respectively; Digital comparator links to each other with a threshold register with described microprocessor respectively, and threshold register links to each other with described microprocessor.
4. a kind of water heater control system according to claim 1; It is characterized in that described leakage protection circuit comprises an electric current mutual inductance circuit; Current transformer links to each other with the zero-power line live wire respectively through sample circuit; Current transformer and gain amplifier, mould-number demodulator, digital filter and voltage effective value calculator are linked in sequence successively; The voltage effective value calculator links to each other with digital comparator and described microprocessor respectively, and microprocessor links to each other with described digital comparator with a threshold register respectively, and microprocessor control signal output links to each other with the control circuit of described relay.
5. a kind of water heater control system according to claim 1 is characterized in that described power control switch is provided with a remote signal receiving circuit.
6. according to claim 1 or 2 or 3 or 4 or 5 described a kind of water heater control systems; It is characterized in that described microprocessor links to each other with a magnesium rod testing circuit; This magnesium rod testing circuit is provided with sample circuit; Sample circuit links to each other with inner bag with the magnesium rod respectively through two current detecting ends, and sample circuit, mould-number demodulator, digital filter and voltage effective value calculator are linked in sequence successively, and the voltage effective value calculator links to each other with digital comparator and described microprocessor respectively; Microprocessor links to each other with described digital comparator with a threshold register respectively, and the microprocessor signals output links to each other with described display unit.
7. according to claim 1 or 2 or 3 or 4 or 5 described a kind of water heater control systems, it is characterized in that described microprocessor links to each other with flow pulse testing circuit, the adaptive switched clock circuit of crystal oscillator failure of oscillation, power supply switch circuit, temperature detection holding circuit respectively.
8. a kind of water heater control system according to claim 6 is characterized in that described microprocessor links to each other with flow pulse testing circuit, the adaptive switched clock circuit of crystal oscillator failure of oscillation, power supply switch circuit, temperature detection holding circuit respectively.
9. a kind of water heater control system according to claim 8 is characterized in that described power supply switch circuit links to each other with an AC power with a battery respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206091656U CN202119119U (en) | 2010-11-16 | 2010-11-16 | Control system of water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206091656U CN202119119U (en) | 2010-11-16 | 2010-11-16 | Control system of water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202119119U true CN202119119U (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206091656U Expired - Lifetime CN202119119U (en) | 2010-11-16 | 2010-11-16 | Control system of water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202119119U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486735A (en) * | 2013-10-09 | 2014-01-01 | 俞群涛 | Water heating system |
| CN103486734A (en) * | 2013-10-09 | 2014-01-01 | 俞升洋 | Water heater |
| CN103486733A (en) * | 2013-10-09 | 2014-01-01 | 俞亮亮 | Water heating device |
| CN104764200A (en) * | 2015-03-18 | 2015-07-08 | 陈斌 | Household electric water heater intelligent control system |
| CN104764205A (en) * | 2015-03-18 | 2015-07-08 | 陈斌 | Intelligent control system of household electric water heater |
-
2010
- 2010-11-16 CN CN2010206091656U patent/CN202119119U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486735A (en) * | 2013-10-09 | 2014-01-01 | 俞群涛 | Water heating system |
| CN103486734A (en) * | 2013-10-09 | 2014-01-01 | 俞升洋 | Water heater |
| CN103486733A (en) * | 2013-10-09 | 2014-01-01 | 俞亮亮 | Water heating device |
| CN103486735B (en) * | 2013-10-09 | 2015-08-12 | 俞群涛 | A kind of water heating system |
| CN103486733B (en) * | 2013-10-09 | 2015-09-09 | 俞亮亮 | A kind of hot-water heating system |
| CN104764200A (en) * | 2015-03-18 | 2015-07-08 | 陈斌 | Household electric water heater intelligent control system |
| CN104764205A (en) * | 2015-03-18 | 2015-07-08 | 陈斌 | Intelligent control system of household electric water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |