CN104634855A - Household appliance humidity detecting method and household appliance humidity detecting device - Google Patents
Household appliance humidity detecting method and household appliance humidity detecting device Download PDFInfo
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- CN104634855A CN104634855A CN201510057244.8A CN201510057244A CN104634855A CN 104634855 A CN104634855 A CN 104634855A CN 201510057244 A CN201510057244 A CN 201510057244A CN 104634855 A CN104634855 A CN 104634855A
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Abstract
The invention discloses a household appliance humidity detecting method and a household appliance humidity detecting device. A first square wave signal output by a first signal output port of a control chip and a second square wave signal output by a second signal output port of the control chip are output to a humidity detecting module, the humidity detecting module generates a sampling voltage signal according to the first square wave signal and the second square wave signal, the control chip determines the humidity value corresponding to the sampling voltage signal generated by the humidity detecting module according to the mapping relation of the preset voltage and the humidity, so as to acquire the humidity value of current environment, and therefore, the household appliance humidity detecting cost is reduced.
Description
Technical field
The present invention relates to Humidity Detection technical field, particularly relate to a kind of humidity detection method and device of household electrical appliance.
Background technology
In order to monitor air humidity, many household electrical appliance all have humidity detecting function.At present, general by installing a humidity detecting module on household electrical appliance, and this humidity detecting module carries detection chip or testing circuit, exports the temperature of approximately linear and the corresponding parameter of voltage by this humidity detecting module, thus obtain air humidity.It is higher in order to the humidity detecting module cost detecting humidity that the defect of prior art is that household electrical appliance are installed.
Summary of the invention
Fundamental purpose of the present invention is the humidity detection method and the device that provide a kind of household electrical appliance, is intended to solve household electrical appliance and carries out the higher technical matters of the cost of Humidity Detection.
The humidity detection method of household electrical appliance provided by the invention, described household electrical appliance comprise control chip, described control chip comprises the first signal output, secondary signal delivery outlet and the first signal input, described household electrical appliance also comprise humidity detecting module, the first input end of described humidity detecting module is connected with described first signal output, second input end of described humidity detecting module is connected with described secondary signal delivery outlet, and the sampled voltage end of described humidity detecting module is connected with described first signal input;
The humidity detection method of described household electrical appliance comprises the following steps:
Step S10, described control chip exports the first square-wave signal to described humidity detecting module by described first signal output, and exports the second square-wave signal to described humidity detecting module by described secondary signal delivery outlet;
Step S20, described control chip reads the described sampled voltage signal of described humidity detecting module generation by described first signal input;
Step S30, described control chip, according to the voltage preset and humidity mapping relations, determines the humidity value corresponding to sampled voltage signal read.
Preferably, described control chip, according to the voltage preset and humidity mapping relations, also comprises before determining the step of the humidity value corresponding to sampled voltage signal read:
Described control chip obtains current environmental temperature value;
Described control chip determines the described voltage corresponding with described current environmental temperature value and humidity mapping relations according to the current environmental temperature value obtained.
Preferably, described control chip, according to the voltage preset and humidity mapping relations, also comprises before determining the step of the humidity value corresponding to sampled voltage signal read:
Described control chip obtains current environmental temperature value;
Described control chip determines that the preset temperature at the current environmental temperature value place obtained is interval, wherein, and voltage and humidity mapping relations described in each preset temperature interval corresponding;
Described control chip searches the voltage corresponding to preset temperature interval and humidity mapping relations determined.
Preferably, described control chip, according to the voltage preset and humidity mapping relations, determines that the step of the humidity value corresponding to sampled voltage signal read comprises:
Described control chip determines that the predeterminated voltage at the sampled voltage signal place of reading is interval, and wherein, each predeterminated voltage interval corresponding presets humidity value;
Described control chip searches the default humidity value corresponding to predeterminated voltage interval determined, will search the default humidity value determined as current humidity value.
Preferably, the humidity detection method of described household electrical appliance also comprises:
Described control chip repeated execution of steps S20 and step S30, and obtain the sampled voltage signal of predetermined number and each humidity value corresponding with each sampled voltage signal;
Described control chip calculates the mean value of each humidity value, and using described mean value as current humidity value.
In addition, the humidity detector of household electrical appliance provided by the invention comprises control chip, described control chip comprises the first signal output, secondary signal delivery outlet and the first signal input, described household electrical appliance pick-up unit also comprises humidity detecting module, the first input end of described humidity detecting module is connected with described first signal output, second input end of described humidity detecting module is connected with described secondary signal delivery outlet, and the sampled voltage end of described humidity detecting module is connected with described first signal input;
Described control chip also comprises output module, read module and the first determination module, wherein,
Described output module, for being exported the first square-wave signal by described first signal output to described humidity detecting module, and exports the second square-wave signal to described humidity detecting module by described secondary signal delivery outlet;
Described read module, for reading the described sampled voltage signal that described humidity detecting module produces by described first signal input;
Described first determination module, for according to the voltage preset and humidity mapping relations, determines the humidity value corresponding to sampled voltage signal read.
Preferably, described control chip also comprises:
Acquisition module, for obtaining current environmental temperature value;
Second determination module, for determining the described voltage corresponding with described current environmental temperature value and humidity mapping relations according to the current environmental temperature value obtained.
Preferably, described control chip also comprises:
Acquisition module, for obtaining current environmental temperature value;
3rd determination module, interval for determining the preset temperature at the current environmental temperature value place obtained, wherein, voltage and humidity mapping relations described in each preset temperature interval corresponding;
Search module, for searching voltage corresponding to the preset temperature interval determined and humidity mapping relations.
Preferably, described first determination module comprises:
Determining unit, interval for determining the predeterminated voltage at the sampled voltage signal place of reading, wherein, each predeterminated voltage interval corresponding presets humidity value;
Searching unit, for searching the default humidity value corresponding to the predeterminated voltage interval determined, will the default humidity value determined be searched as current humidity value.
Preferably,
Described read module also reads described sampled voltage signal for repeating, and obtains the employing voltage signal of predetermined number;
Described first determination module also for according to described voltage and humidity mapping relations, is determined each humidity value described in each corresponding to sampled voltage signal, and is calculated the mean value of each humidity value, using described mean value as current humidity value.
The humidity detection method of household electrical appliance provided by the invention and device, the first square-wave signal is exported and secondary signal delivery outlet exports the second square-wave signal to humidity detecting module by the first signal output of control chip, humidity detecting module generates according to the first square-wave signal and the second square-wave signal and adopts voltage signal, control chip is according to the voltage preset and humidity mapping relations, determine the humidity value corresponding to sampled voltage signal, thus obtain the humidity value of current environment, reduce the cost that household electrical appliance carry out Humidity Detection.
Accompanying drawing explanation
Fig. 1 is the principle schematic of household electrical appliance one embodiment of the present invention;
Fig. 2 is the schematic flow sheet of humidity detection method first embodiment of household electrical appliance of the present invention;
Fig. 3 is the schematic flow sheet of humidity detection method second embodiment of household electrical appliance of the present invention;
Fig. 4 is the schematic flow sheet of humidity detection method the 3rd embodiment of household electrical appliance of the present invention;
Fig. 5 is the refinement schematic flow sheet of the step of control chip determination humidity value in the humidity detection method of household electrical appliance of the present invention;
Fig. 6 is the high-level schematic functional block diagram of control chip first embodiment of the humidity detector of household electrical appliance of the present invention;
Fig. 7 is the high-level schematic functional block diagram of control chip second embodiment of the humidity detector of household electrical appliance of the present invention;
Fig. 8 is the high-level schematic functional block diagram of control chip the 3rd embodiment of the humidity detector of household electrical appliance of the present invention;
Fig. 9 is the refinement high-level schematic functional block diagram of the first determination module in Fig. 7.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of humidity detection method of household electrical appliance.
See figures.1.and.2, Fig. 1 is the principle schematic of household electrical appliance one embodiment of the present invention, and Fig. 2 is the schematic flow sheet of humidity detection method first embodiment of household electrical appliance of the present invention.
In one embodiment, described household electrical appliance comprise control chip 10, described control chip 10 comprises the first signal output Vout1, secondary signal delivery outlet Vout2 and the first signal input Vin1, described household electrical appliance also comprise humidity detecting module 20, the first input end of described humidity detecting module 20 is connected with described first signal output Vout1, second input end of described humidity detecting module 20 is connected with described secondary signal delivery outlet Vout2, and the sampled voltage end of described humidity detecting module 20 is connected with described first signal input Vin1;
In one embodiment, the humidity detection method of these household electrical appliance comprises:
Step S10, described control chip 10 exports the first square-wave signal to described humidity detecting module 20 by described first signal output Vout1, and exports the second square-wave signal to described humidity detecting module 20 by described secondary signal delivery outlet Vout2;
In the present embodiment, above-mentioned household electrical appliance can be air-conditioning, televisor, refrigerator, electric fan etc.Above-mentioned control chip 10 can be the main control chip of household electrical appliance, therefore, when production possesses the household electrical appliance of humidity detecting function, only need interpolation one humidity detecting module 20, and this humidity detecting module 20 does not need to possess control module, the processing procedure of Humidity Detection directly can utilize the main control chip of household electrical appliance, reduces the cost that household electrical appliance carry out Humidity Detection.Above-mentioned humidity detecting module 20 comprises the first resistance R1 be sequentially connected in series, humidity sensor RH, second resistance R2 and the 3rd resistance R3, wherein, first resistance R1 deviates from one end that one end of humidity sensor RH and the 3rd resistance R3 deviate from the second resistance R2 and is connected to+5V direct supply altogether, the common port of the first resistance R1 and humidity sensor RH is the first input end of humidity detecting module 20, the common port of the second resistance R2 and the 3rd resistance R3 is the second input end of humidity detecting module 20, the common port of humidity sensor RH and the second resistance R2 is the sampled voltage end of humidity detecting module 20.Above-mentioned control chip 10 comprises the interface unit that control module is connected with control module and the filter unit be located between control module and interface unit, wherein, interface unit is provided with described first signal input Vin1, the first signal output Vout1 and secondary signal delivery outlet Vout2, and filter unit is connected between the input port of control module and the first signal input Vin1 of interface unit.Preferably, filter unit comprises the 4th resistance R4 and the first electric capacity C1, and wherein, the 4th resistance R4 is series between the input port of control module and the first signal input Vin1 of interface unit, first electric capacity C1 one end is connected with the input port of control module, the first electric capacity C1 other end ground connection.
Cycle and the amplitude of above-mentioned first square-wave signal and the second square-wave signal can be arranged according to actual needs.
Preferably, the phase place of described first square-wave signal and the second square-wave signal is contrary, namely when the first square-wave signal exported at the first signal output Vout1 is high level, the second square-wave signal that secondary signal delivery outlet Vout2 exports is low level, or when the first square-wave signal that the first signal output Vout1 exports is low level, the second square-wave signal that secondary signal delivery outlet Vout2 exports is high level, thus make the voltage at humidity sensor RH and the second resistance R2 two ends reach the highest, make to detect humidity value more accurately in subsequent step.
Preferably, the frequency range of described first square-wave signal and the second square-wave signal is between 0.5KHz to 2KHz.In the present embodiment, the frequency of the first square-wave signal and the second square-wave signal is 1KHz.
Described humidity detecting module 20 generates sampled voltage signal according to the first square-wave signal received and the second square-wave signal;
Step S20, described control chip 10 reads the described sampled voltage signal of described humidity detecting module 20 generation by described first signal input Vin1;
If the semiperiod of described first square-wave signal and the second square-wave signal is T; Preferably, described control chip 10 reads described sampled voltage signal by described first signal input Vin1 within the time period of 0.25T to 0.75T, thus can improve the accuracy of Humidity Detection further.
In the present embodiment, sampled voltage signal is the magnitude of voltage at the common port place of humidity sensor RH and the second resistance R2, because the resistance of the second resistance R2 is known, therefore can be obtained the current resistance of humidity sensor RH by sampled voltage signal.According to the inherent parameters of humidity sensor RH, the current resistance namely by humidity sensor RH obtains current humidity value.
Step S30, described control chip 10, according to the voltage preset and humidity mapping relations, determines the humidity value corresponding to sampled voltage signal read.
In the present embodiment, due to the resistance of the corresponding humidity sensor RH of each sampled voltage signal, and the resistance of humidity sensor is corresponding with current humidity value, therefore, each sampled voltage signal and current humidity value have corresponding relation, thus in control chip 10, store the voltage and humidity mapping relations preset in advance, wherein, described voltage and humidity mapping relations can be a function, or be a form prestored, specifically can arrange according to actual needs, preferably, described voltage and mapping relations are a voltage and mapping relations table, after control chip 10 reads sampled voltage signal, namely the voltage humidity value corresponding with humidity mapping relations table determination sampled voltage signal by storing.
The humidity detection method of household electrical appliance provided by the invention, the first square-wave signal is exported and secondary signal delivery outlet Vout2 exports the second square-wave signal to humidity detecting module 20 by the first signal output Vout1 of control chip 10, humidity detecting module 20 generates according to the first square-wave signal and the second square-wave signal and adopts voltage signal, control chip 10 is according to the voltage preset and humidity mapping relations, determine the humidity value corresponding to sampled voltage signal, thus obtain the humidity value of current environment, reduce the cost that household electrical appliance carry out Humidity Detection.
Further, in order to improve the accuracy of Humidity Detection further, in the present invention in a certain or all embodiments, with reference to the schematic flow sheet that Fig. 3, Fig. 3 are humidity detection method second embodiment of household electrical appliance of the present invention, also comprise before step S30:
Step S40, described control chip 10 obtains current environmental temperature value;
In the present embodiment, the mode that control chip 10 obtains current environmental temperature value can be arranged according to actual needs, such as, directly current environmental temperature value can be sent to control chip 10 by external unit.Preferably, in the present embodiment, described household electrical appliance also comprise temperature detecting module 30, and described control chip 10 also comprises secondary signal input port Vin2, and the output terminal of described temperature detecting module 30 is connected with described secondary signal input port Vin2.
In the present embodiment, temperature detecting module 30 comprises temperature sensor RT and the 5th resistance R5, the first end of temperature sensor RT is connected with+5V DC voltage, second end of temperature sensor RT is connected with the first end of the 5th resistance R5, the second end ground connection of the 5th resistance R5, and the first end of second end of temperature sensor RT and the 5th resistance R5 is connected to the secondary signal input port Vin2 of control chip 10 altogether.Operationally, the output terminal output temperature sampled voltage signal of temperature detecting module 30 is to the secondary signal input port Vin2 of control chip 10, control chip 10 can calculate the current resistance of temperature sensor RT according to the temperature sampling voltage signal received, because the resistance of temperature sensor RT and environment temperature have linear mapping relation, therefore current environmental temperature value can be obtained by the resistance of this temperature sensor RT and the linear mapping relation of environment temperature.
Step S50, described control chip 10 determines the described voltage corresponding with described current environmental temperature value and humidity mapping relations according to the current environmental temperature value obtained.
In the present embodiment, each temperature value correspondingly can preset a voltage and humidity mapping relations.Due to when environment temperature is different, the resistance of humidity sensor RH is not identical with the corresponding relation between ambient humidity yet.Therefore, first the voltage corresponding with this ambient temperature value and humidity mapping relations are determined according to current environmental temperature value.
Further, in order to improve the accuracy of Humidity Detection further, with reference to the schematic flow sheet that Fig. 4, Fig. 4 are humidity detection method the 3rd embodiment of household electrical appliance of the present invention, also comprise before step S30:
Step S40, described control chip 10 obtains current environmental temperature value; In this enforcement, this step is identical with the step S40 in a upper embodiment, does not repeat them here.
Step S60, described control chip 10 determines that the preset temperature at the current environmental temperature value place obtained is interval, wherein, voltage and humidity mapping relations described in each preset temperature interval corresponding;
Step S70, described control chip 10 searches the voltage corresponding to preset temperature interval and humidity mapping relations determined.
In the present embodiment, above-mentioned preset temperature interval can be arranged according to actual needs, such as, between from A1 DEG C to A2 DEG C, can every 5 DEG C to be set to a preset temperature interval, or every 3 DEG C to arrange a preset temperature interval.Such as, 15 DEG C to 20 DEG C correspondence first predeterminated voltages and humidity mapping relations, 20 DEG C to 25 DEG C correspondence second predeterminated voltages and humidity mapping relations, 25 DEG C to 30 DEG C correspondence the 3rd predeterminated voltages and humidity mapping relations.If current environmental temperature value is 16 DEG C, then the preset temperature interval determined is 15 DEG C to 20 DEG C, and accordingly, the predeterminated voltage finally determined and humidity mapping relations are the first predeterminated voltage and humidity mapping relations.
Further, in order to improve the accuracy of Humidity Detection further, be the refinement schematic flow sheet of the step of control chip determination humidity value in the humidity detection method of household electrical appliance of the present invention with reference to Fig. 5, Fig. 5, step S30 comprises:
Step S31, described control chip 10 determines that the predeterminated voltage at the sampled voltage signal place of reading is interval, and wherein, each predeterminated voltage interval corresponding presets humidity value;
Step S32, described control chip 10 searches the default humidity value corresponding to predeterminated voltage interval determined, will search the default humidity value determined as current humidity value.
With reference to table 1, table 1 is the voltage and humidity mapping relations preset in humidity detection method one embodiment of household electrical appliance of the present invention.
Table 1
| Predeterminated voltage is interval | [V1,v2) | [V2,v3) | [V3,v4) | [V4,v5) |
| Preset humidity value | A1 | A2 | A3 | A4 |
If control chip 10 determines that the sampled voltage signal read is V, and V is between V2 to V3, then according to table 1, can determine predeterminated voltage interval corresponding to sampled voltage signal V for [V2, V3), accordingly, the current humidity value finally determined is A2.
Further, in order to improve the accuracy of Humidity Detection further, in the present invention in a certain or all embodiments, the humidity detection method of described household electrical appliance also comprises:
Described control chip repeated execution of steps S20 and step S30, and obtain the sampled voltage signal of predetermined number and each humidity value corresponding with each sampled voltage signal;
Described control chip calculates the mean value of each humidity value, and using described mean value as current humidity value.
Particularly, step S30 comprises: every the time interval of presetting, described control chip 10 reads described sampled voltage signal by described first signal input Vin1;
Step S40 comprises: described control chip 10, according to the voltage preset and humidity mapping relations, determines each humidity value corresponding to described sampled voltage signal of the predetermined number read; Described control chip 10 calculates the mean value of each humidity value determined, using described mean value as current humidity value.
In the present embodiment, the above-mentioned default time interval and predetermined number can be arranged according to actual needs.Such as, the humidity value that adjacent three moment obtain can be determined, and ask for the mean value of each humidity value, using this mean value as current humidity value, thus the accuracy making to detect can be improved further.
The present invention further provides a kind of humidity detector of household electrical appliance.
In one embodiment, please referring again to Fig. 1, the humidity detector of these household electrical appliance comprises control chip 10, described control chip 10 comprises the first signal output Vout1, secondary signal delivery outlet Vout2 and the first signal input Vin1, described household electrical appliance pick-up unit also comprises humidity detecting module 20, the first input end of described humidity detecting module 20 is connected with described first signal output Vout1, second input end of described humidity detecting module 20 is connected with described secondary signal delivery outlet Vout2, the sampled voltage end of described humidity detecting module 20 is connected with described first signal input Vin1,
With reference to the high-level schematic functional block diagram that Fig. 6, Fig. 6 are control chip first embodiment of the humidity detector of household electrical appliance of the present invention.Described control chip 10 also comprises output module 11, read module 12 and the first determination module 13, wherein,
Described output module 11, for being exported the first square-wave signal by described first signal output Vout1 to described humidity detecting module 20, and exports the second square-wave signal to described humidity detecting module 20 by described secondary signal delivery outlet Vout2;
In the present embodiment, above-mentioned household electrical appliance can be air-conditioning, televisor, refrigerator, electric fan etc.Above-mentioned control chip 10 can be the main control chip of household electrical appliance, therefore, when production possesses the household electrical appliance of humidity detecting function, only need interpolation one humidity detecting module 20, and this humidity detecting module 20 does not need to possess control module, the processing procedure of Humidity Detection directly can utilize the main control chip of household electrical appliance, reduces the cost that household electrical appliance carry out Humidity Detection.Above-mentioned humidity detecting module 20 comprises the first resistance R1 be sequentially connected in series, humidity sensor RH, second resistance R2 and the 3rd resistance R3, wherein, first resistance R1 deviates from one end that one end of humidity sensor RH and the 3rd resistance R3 deviate from the second resistance R2 and is connected to+5V direct supply altogether, the common port of the first resistance R1 and humidity sensor RH is the first input end of humidity detecting module 20, the common port of the second resistance R2 and the 3rd resistance R3 is the second input end of humidity detecting module 20, the common port of humidity sensor RH and the second resistance R2 is the sampled voltage end of humidity detecting module 20.Above-mentioned control chip 10 comprises the interface unit that control module is connected with control module and the filter unit be located between control module and interface unit, wherein, interface unit is provided with described first signal input Vin1, the first signal output Vout1 and secondary signal delivery outlet Vout2, and filter unit is connected between the input port of control module and the first signal input Vin1 of interface unit.Preferably, filter unit comprises the 4th resistance R4 and the first electric capacity C1, and wherein, the 4th resistance R4 is series between the input port of control module and the first signal input Vin1 of interface unit, first electric capacity C1 one end is connected with the input port of control module, the first electric capacity C1 other end ground connection.
Cycle and the amplitude of above-mentioned first square-wave signal and the second square-wave signal can be arranged according to actual needs.
Preferably, the phase place of described first square-wave signal and the second square-wave signal is contrary, namely when the first square-wave signal exported at the first signal output Vout1 is high level, the second square-wave signal that secondary signal delivery outlet Vout2 exports is low level, or when the first square-wave signal that the first signal output Vout1 exports is low level, the second square-wave signal that secondary signal delivery outlet Vout2 exports is high level, thus make the voltage at humidity sensor RH and the second resistance R2 two ends reach the highest, make to detect humidity value more accurately in subsequent step.
Preferably, the frequency range of described first square-wave signal and the second square-wave signal is between 0.5KHz to 2KHz.In the present embodiment, the frequency of the first square-wave signal and the second square-wave signal is 1KHz.
Described humidity detecting module 20, for generating sampled voltage signal according to the first square-wave signal received and the second square-wave signal;
Described read module 12, for reading the described sampled voltage signal that described humidity detecting module 20 produces by described first signal input Vin1;
If the semiperiod of described first square-wave signal and the second square-wave signal is T; Preferably, described control chip 10 reads described sampled voltage signal by described first signal input Vin1 within the time period of 0.25T to 0.75T, thus can improve the accuracy of Humidity Detection further.
In the present embodiment, sampled voltage signal is the magnitude of voltage at the common port place of humidity sensor RH and the second resistance R2, because the resistance of the second resistance R2 is known, therefore can be obtained the current resistance of humidity sensor RH by sampled voltage signal.According to the inherent parameters of humidity sensor RH, the current resistance namely by humidity sensor RH obtains current humidity value.
Described first determination module 13, for according to the voltage preset and humidity mapping relations, determines the humidity value corresponding to sampled voltage signal read.
In the present embodiment, due to the resistance of the corresponding humidity sensor RH of each sampled voltage signal, and the resistance of humidity sensor is corresponding with current humidity value, therefore, each sampled voltage signal and current humidity value have corresponding relation, thus in control chip 10, store the voltage and humidity mapping relations preset in advance, wherein, described voltage and humidity mapping relations can be a function, or be a form prestored, specifically can arrange according to actual needs, preferably, described voltage and mapping relations are a voltage and mapping relations table, after control chip 10 reads sampled voltage signal, namely the voltage humidity value corresponding with humidity mapping relations table determination sampled voltage signal by storing.
The humidity detector of household electrical appliance provided by the invention, the first square-wave signal is exported and secondary signal delivery outlet Vout2 exports the second square-wave signal to humidity detecting module 20 by the first signal output Vout1 of control chip 10, humidity detecting module 20 generates according to the first square-wave signal and the second square-wave signal and adopts voltage signal, control chip 10 is according to the voltage preset and humidity mapping relations, determine the humidity value corresponding to sampled voltage signal, thus obtain the humidity value of current environment, reduce the cost that household electrical appliance carry out Humidity Detection.
Further, in order to improve the accuracy of Humidity Detection further, in the present invention in a certain or all embodiments, with reference to Fig. 7, Fig. 7 is the high-level schematic functional block diagram of control chip second embodiment of the humidity detector of household electrical appliance of the present invention, described control chip 10 also comprises acquisition module 14 and the second determination module 15, wherein
Acquisition module 14, for obtaining current environmental temperature value;
In the present embodiment, the mode that control chip 10 obtains current environmental temperature value can be arranged according to actual needs, such as, directly current environmental temperature value can be sent to control chip 10 by external unit.Preferably, in the present embodiment, described household electrical appliance also comprise temperature detecting module 30, and described control chip 10 also comprises secondary signal input port Vin2, and the output terminal of described temperature detecting module 30 is connected with described secondary signal input port Vin2.
In the present embodiment, temperature detecting module 30 comprises temperature sensor RT and the 5th resistance R5, the first end of temperature sensor RT is connected with+5V DC voltage, second end of temperature sensor RT is connected with the first end of the 5th resistance R5, the second end ground connection of the 5th resistance R5, and the first end of second end of temperature sensor RT and the 5th resistance R5 is connected to the secondary signal input port Vin2 of control chip 10 altogether.Operationally, the output terminal output temperature sampled voltage signal of temperature detecting module 30 is to the secondary signal input port Vin2 of control chip 10, control chip 10 can calculate the current resistance of temperature sensor RT according to the temperature sampling voltage signal received, because the resistance of temperature sensor RT and environment temperature have linear mapping relation, therefore current environmental temperature value can be obtained by the resistance of this temperature sensor RT and the linear mapping relation of environment temperature.
Second determination module 15, for determining the described voltage corresponding with described current environmental temperature value and humidity mapping relations according to the current environmental temperature value obtained.
In the present embodiment, each temperature value correspondingly can preset a voltage and humidity mapping relations.Due to when environment temperature is different, the resistance of humidity sensor RH is not identical with the corresponding relation between ambient humidity yet.Therefore, first the voltage corresponding with this ambient temperature value and humidity mapping relations are determined according to current environmental temperature value.
Further, in order to improve the accuracy of Humidity Detection further, be the high-level schematic functional block diagram of control chip the 3rd embodiment of the humidity detector of household electrical appliance of the present invention with reference to Fig. 8, Fig. 8, described control chip 10 also comprises:
3rd determination module 16, interval for determining the preset temperature at the current environmental temperature value place obtained, wherein, voltage and humidity mapping relations described in each preset temperature interval corresponding;
Search module 17, for searching voltage corresponding to the preset temperature interval determined and humidity mapping relations.
In the present embodiment, above-mentioned preset temperature interval can be arranged according to actual needs, such as, between from A1 DEG C to A2 DEG C, can every 5 DEG C to be set to a preset temperature interval, or every 3 DEG C to arrange a preset temperature interval.Such as, 15 DEG C to 20 DEG C correspondence first predeterminated voltages and humidity mapping relations, 20 DEG C to 25 DEG C correspondence second predeterminated voltages and humidity mapping relations, 25 DEG C to 30 DEG C correspondence the 3rd predeterminated voltages and humidity mapping relations.If current environmental temperature value is 16 DEG C, then the preset temperature interval determined is 15 DEG C to 20 DEG C, and accordingly, the predeterminated voltage finally determined and humidity mapping relations are the first predeterminated voltage and humidity mapping relations.
Further, in order to improve the accuracy of Humidity Detection further, be the refinement high-level schematic functional block diagram of the first determination module in Fig. 7 with reference to Fig. 9, Fig. 9, described first determination module 13 comprises:
Determining unit 131, interval for determining the predeterminated voltage at the sampled voltage signal place of reading, wherein, each predeterminated voltage interval corresponding presets humidity value;
Searching unit 132, for searching the default humidity value corresponding to the predeterminated voltage interval determined, will the default humidity value determined be searched as current humidity value.
With reference to upper table 1, upper table 1 is the voltage and humidity mapping relations preset in humidity detection method one embodiment of household electrical appliance of the present invention.If control chip 10 determines that the sampled voltage signal read is V, and V is between V2 to V3, then according to table 1, can determine predeterminated voltage interval corresponding to sampled voltage signal V for [V2, V3), accordingly, the current humidity value finally determined is A2.
Further, in order to improve the accuracy of Humidity Detection further, in the present invention in a certain or all embodiments, described read module 12 also for, repeat to read described sampled voltage signal, and obtain the employing voltage signal of predetermined number; Particularly, described read module 12 also for every the time interval of presetting, reads described sampled voltage signal by described first signal input Vin1;
Described first determination module 13 also for according to described voltage and humidity mapping relations, is determined each humidity value described in each corresponding to sampled voltage signal, and is calculated the mean value of each humidity value, using described mean value as current humidity value.
In the present embodiment, the above-mentioned default time interval and predetermined number can be arranged according to actual needs.Such as, the humidity value that adjacent three moment obtain can be determined, and ask for the mean value of each humidity value, using this mean value as current humidity value, thus the accuracy making to detect can be improved further.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the humidity detection method of household electrical appliance, described household electrical appliance comprise control chip, described control chip comprises the first signal output, secondary signal delivery outlet and the first signal input, it is characterized in that, described household electrical appliance also comprise humidity detecting module, the first input end of described humidity detecting module is connected with described first signal output, second input end of described humidity detecting module is connected with described secondary signal delivery outlet, and the sampled voltage end of described humidity detecting module is connected with described first signal input;
The humidity detection method of described household electrical appliance comprises the following steps:
Step S10, described control chip exports the first square-wave signal to described humidity detecting module by described first signal output, and exports the second square-wave signal to described humidity detecting module by described secondary signal delivery outlet;
Step S20, described control chip reads the sampled voltage signal of described humidity detecting module generation by described first signal input;
Step S30, described control chip, according to the voltage preset and humidity mapping relations, determines the humidity value corresponding to sampled voltage signal read.
2. the humidity detection method of household electrical appliance as claimed in claim 1, is characterized in that, described control chip, according to the voltage preset and humidity mapping relations, also comprises before determining the step of the humidity value corresponding to sampled voltage signal read:
Described control chip obtains current environmental temperature value;
Described control chip determines the described voltage corresponding with described current environmental temperature value and humidity mapping relations according to the current environmental temperature value obtained.
3. the humidity detection method of household electrical appliance as claimed in claim 1, is characterized in that, described control chip, according to the voltage preset and humidity mapping relations, also comprises before determining the step of the humidity value corresponding to sampled voltage signal read:
Described control chip obtains current environmental temperature value;
Described control chip determines that the preset temperature at the current environmental temperature value place obtained is interval, wherein, and voltage and humidity mapping relations described in each preset temperature interval corresponding;
Described control chip searches the voltage corresponding to preset temperature interval and humidity mapping relations determined.
4. the humidity detection method of the household electrical appliance as described in any one of claims 1 to 3, is characterized in that, described control chip, according to the voltage preset and humidity mapping relations, determines that the step of the humidity value corresponding to sampled voltage signal read comprises:
Described control chip determines that the predeterminated voltage at the sampled voltage signal place of reading is interval, and wherein, each predeterminated voltage interval corresponding presets humidity value;
Described control chip searches the default humidity value corresponding to predeterminated voltage interval determined, will search the default humidity value determined as current humidity value.
5. the humidity detection method of household electrical appliance as claimed in claim 1, it is characterized in that, the humidity detection method of described household electrical appliance also comprises:
Described control chip repeated execution of steps S20 and step S30, and obtain the sampled voltage signal of predetermined number and each humidity value corresponding with each sampled voltage signal;
Described control chip calculates the mean value of each humidity value, and using described mean value as current humidity value.
6. the humidity detector of household electrical appliance, described household electrical appliance pick-up unit comprises control chip, described control chip comprises the first signal output, secondary signal delivery outlet and the first signal input, it is characterized in that, described household electrical appliance pick-up unit also comprises humidity detecting module, the first input end of described humidity detecting module is connected with described first signal output, second input end of described humidity detecting module is connected with described secondary signal delivery outlet, and the sampled voltage end of described humidity detecting module is connected with described first signal input;
Described control chip also comprises output module, read module and the first determination module, wherein,
Described output module, for being exported the first square-wave signal by described first signal output to described humidity detecting module, and exports the second square-wave signal to described humidity detecting module by described secondary signal delivery outlet;
Described read module, for reading the sampled voltage signal that described humidity detecting module produces by described first signal input;
Described first determination module, for according to the voltage preset and humidity mapping relations, determines the humidity value corresponding to sampled voltage signal read.
7. the humidity detector of household electrical appliance as claimed in claim 6, it is characterized in that, described control chip also comprises:
Acquisition module, for obtaining current environmental temperature value;
Second determination module, for determining the described voltage corresponding with described current environmental temperature value and humidity mapping relations according to the current environmental temperature value obtained.
8. the humidity detector of household electrical appliance as claimed in claim 6, it is characterized in that, described control chip also comprises:
Acquisition module, for obtaining current environmental temperature value;
3rd determination module, interval for determining the preset temperature at the current environmental temperature value place obtained, wherein, voltage and humidity mapping relations described in each preset temperature interval corresponding;
Search module, for searching voltage corresponding to the preset temperature interval determined and humidity mapping relations.
9. the humidity detector of the household electrical appliance as described in any one of claim 6 to 8, is characterized in that, described first determination module comprises:
Determining unit, interval for determining the predeterminated voltage at the sampled voltage signal place of reading, wherein, each predeterminated voltage interval corresponding presets humidity value;
Searching unit, for searching the default humidity value corresponding to the predeterminated voltage interval determined, will the default humidity value determined be searched as current humidity value.
10. the humidity detector of household electrical appliance as claimed in claim 6, is characterized in that,
Described read module also reads described sampled voltage signal for repeating, and obtains the employing voltage signal of predetermined number;
Described first determination module also for according to described voltage and humidity mapping relations, is determined each humidity value described in each corresponding to sampled voltage signal, and is calculated the mean value of each humidity value, using described mean value as current humidity value.
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| CN201510057244.8A CN104634855A (en) | 2015-02-03 | 2015-02-03 | Household appliance humidity detecting method and household appliance humidity detecting device |
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| CN201510057244.8A CN104634855A (en) | 2015-02-03 | 2015-02-03 | Household appliance humidity detecting method and household appliance humidity detecting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870959A (en) * | 2017-04-05 | 2017-06-20 | 北京蓝宇天翔环境科技有限公司 | A kind of new hot pipe network leakage monitoring device |
| CN108628374A (en) * | 2018-06-29 | 2018-10-09 | 王倩 | A kind of wheat growth intelligent control method and system |
| CN109470747A (en) * | 2018-12-28 | 2019-03-15 | 无锡华润矽科微电子有限公司 | Hygrometer circuit and the corresponding method for realizing moisture measurement |
| CN109470747B (en) * | 2018-12-28 | 2024-04-26 | 华润微集成电路(无锡)有限公司 | Hygrometer circuit and corresponding method for realizing humidity measurement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55104749A (en) * | 1979-02-06 | 1980-08-11 | Toshiba Corp | Humidity detecting circuit |
| CN2387537Y (en) * | 1999-06-24 | 2000-07-12 | 谭维克 | Capacity type wet sensitive multifunctional sensor |
| CN1546917A (en) * | 2003-12-12 | 2004-11-17 | 广东美的集团股份有限公司 | Humidity control device used for electric fan |
| CN102353699A (en) * | 2011-06-03 | 2012-02-15 | 宁波奥克斯空调有限公司 | Method for sampling of humidity sensors by using square waves |
| CN203025135U (en) * | 2012-12-04 | 2013-06-26 | 广东美的微波电器制造有限公司 | Humidity detection device |
-
2015
- 2015-02-03 CN CN201510057244.8A patent/CN104634855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55104749A (en) * | 1979-02-06 | 1980-08-11 | Toshiba Corp | Humidity detecting circuit |
| CN2387537Y (en) * | 1999-06-24 | 2000-07-12 | 谭维克 | Capacity type wet sensitive multifunctional sensor |
| CN1546917A (en) * | 2003-12-12 | 2004-11-17 | 广东美的集团股份有限公司 | Humidity control device used for electric fan |
| CN102353699A (en) * | 2011-06-03 | 2012-02-15 | 宁波奥克斯空调有限公司 | Method for sampling of humidity sensors by using square waves |
| CN203025135U (en) * | 2012-12-04 | 2013-06-26 | 广东美的微波电器制造有限公司 | Humidity detection device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870959A (en) * | 2017-04-05 | 2017-06-20 | 北京蓝宇天翔环境科技有限公司 | A kind of new hot pipe network leakage monitoring device |
| CN108628374A (en) * | 2018-06-29 | 2018-10-09 | 王倩 | A kind of wheat growth intelligent control method and system |
| CN109470747A (en) * | 2018-12-28 | 2019-03-15 | 无锡华润矽科微电子有限公司 | Hygrometer circuit and the corresponding method for realizing moisture measurement |
| CN109470747B (en) * | 2018-12-28 | 2024-04-26 | 华润微集成电路(无锡)有限公司 | Hygrometer circuit and corresponding method for realizing humidity measurement |
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Application publication date: 20150520 |