CN107422396A - Foreign matter detection system, foreign matter detecting method and heating and ventilating equipment - Google Patents
Foreign matter detection system, foreign matter detecting method and heating and ventilating equipment Download PDFInfo
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- CN107422396A CN107422396A CN201710613026.7A CN201710613026A CN107422396A CN 107422396 A CN107422396 A CN 107422396A CN 201710613026 A CN201710613026 A CN 201710613026A CN 107422396 A CN107422396 A CN 107422396A
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- G—PHYSICS
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The present invention proposes a kind of foreign matter detection system, method and heating and ventilating equipment, wherein, foreign matter detection system, including：At least one signal processing apparatus, including for sending out the signal generator of analog signal and receiving the signal receiver of the analog signal after reflection；Microcontroller, electrically connected with signal processing apparatus, microcontroller sends out analog signal with prefixed time interval control signal generator；Timer, for determining the first moment for sending analog signal and the second moment for receiving analog signal, the first moment and the second moment are sent to microcontroller；Display device, correspond to signal generator to the prompt message of the distance between reverberation for showing.By technical scheme, by showing the prompt message corresponding to range information, safety alarm prompting is carried out, reduces the possibility that set heat exchange is bad caused by large area foreign matters from being blocked heat exchanger, reminds user to clean in time, improves Consumer's Experience.
Description
Technical field
The present invention relates to heating and ventilating equipment field, in particular to a kind of foreign matter detection system, a kind of foreign bodies detection side
Method, a kind of heating and ventilating equipment, a kind of computer equipment and a kind of computer-readable recording medium.
Background technology
For heating and ventilating equipment, installation and operation environment influences very big on the security reliability of equipment, energy-efficient performance.Such as north
The influence of the foreign matters such as Fang Yinwei hazes, dust, leaves of plants, seed, it can be formed on heating and ventilating equipment heat exchanger (condenser) dirty stifled
Thing, accumulation can influence the heat exchange efficiency of outdoor heat exchanger afterwards to a certain extent, so as to reduce the output of the efficiency of equipment, increase energy
Consumption, waste the energy.In addition, dirty stifled thing adds machine burden, cause machine reliability to reduce, not only reduce service life,
Security performance also largely reduces.Therefore, it is necessary to be detected at any time to the dirty stifled thing of outdoor heat exchanger, but do not have at present
There is a kind of dirty stifled object detecting method well, detection maintenance just will not be often carried out after heating and ventilating equipment installation and debugging are qualified.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of foreign matter detection system.
Another object of the present invention is to propose a kind of foreign matter detecting method.
A further object of the present invention is to propose a kind of heating and ventilating equipment.
A further object of the present invention is to propose a kind of computer equipment.
A further object of the present invention is to propose a kind of computer-readable recording medium.
In view of this, the technical scheme of first aspect present invention proposes a kind of foreign matter detection system, including：It is at least one
Signal processing apparatus, on the shell of heating and ventilating equipment or the heat exchanger of heating and ventilating equipment, signal processing apparatus includes being used for outwards
Send the signal generator of analog signal and the signal receiver for receiving the analog signal after reverberation reflects；Micro-control
Device processed, is electrically connected with signal processing apparatus, and microcontroller sends electric signal to control with prefixed time interval to signal generator
Signal generator sends out analog signal；Timer, electrically connected with signal processing apparatus and microcontroller, timer determines
Send out the first moment of analog signal and receive the second moment of analog signal, the first moment and the second moment are sent out
Deliver to microcontroller；Display device, electrically connected with microcontroller, microcontroller is in response between the first moment and the second moment
Duration determine signal generator to the distance between reverberation information, display device is used to show carrying corresponding to range information
Show information.
In the technical scheme, foreign matter detection system include at least one signal processing apparatus, microcontroller, timer with
And display device, microcontroller control signals generator send out analog signal with predetermined interval, analog signal is (empty in medium
Gas) in transmitted with certain transmission speed, analog signal can be reflected when running into reverberation with same speed, such as metope, dirty
During the foreign matters such as stifled thing, frost, timer is determined to send the first moment of analog signal, and signal receiver receives to be reflected through reverberation
Analog signal afterwards, now timer determine to receive the second moment of analog signal, timer is by the first moment of determination and the
Two moment were sent to microcontroller, microcontroller to exist according to the duration between the first moment and the second moment and analog signal
Transmission speed in medium determines that signal generator to the distance between reverberation information, microprocessor control display device is shown
Corresponding to the prompt message of range information, realize to reverberation and signal generator determination of distance and then judge the kind of reverberation
Class simultaneously shows the prompt message corresponding to range information, carries out safety alarm prompting, reduces because large area foreign matters from being blocked exchanges heat
The bad possibility of set heat exchange caused by device, remind user to clean in time, improve Consumer's Experience.
It should be noted that according to the difference of signal generator installation site, above-mentioned foreign matter detection system can realize measurement
Unit reduces unit and the excessively near possibility of metope mounting distance, while can also realize dirty stifled on heat exchanging device to metope distance
The detection of thing, user is reminded to clear up in time, further, it is also possible to the detection to outdoor heat exchanger rime ice stopping state is realized, and root
Heating and ventilating equipment is sent to according to range information to judge whether rime ice thickness needs to perform defrosting operation.
Wherein, microcontroller, timer, display device can be combined integrated.
Furthermore, it is necessary to explanation, according to the difference of signal generator installation site, its corresponding prefixed time interval can
According to circumstances set, after terminating such as heating and ventilating equipment installation and debugging, judge whether mounting distance is suitable, be arranged in electric 5min interior
Detection unit or heat exchanger such as when heating and ventilating equipment is worked with preset mode, determine whether apart from the distance of reverberation in real time
Large area foreign matter is excessively near apart from heat exchanger, sets interval slightly long, sets predetermined interval such as 2h to send out analog signal, examine
Survey the distance of unit or heat exchanger apart from reverberation；When detecting trickle dirty stifled thing, set prefixed time interval such as 720h outside
Analog signal is sent, whether is detected on outdoor heat exchanger formed with certain thickness trickle dirty stifled thing, when judging rime ice thickness, root
At the judgement moment determined according to outdoor temp angle value and defrost logic, analog signal is sent out, judges whether rime ice thickness needs to hold
Row defrosting operation.
In addition it is also necessary to explanation, the prompt message corresponding to range information that display device is shown include but unlimited
In the combination of word, icon and word and icon.
Also settable audio-frequency module in above-mentioned foreign matter detection system, to play the audio for corresponding to prompt message.
In addition it is also necessary to explanation, analog signal include but is not limited to one below or combination：Sound wave, electromagnetic wave, letter
Number generator can send corresponding analog signal, and signal receiver is preferably the sensor that can receive corresponding analog signal types.
In the above-mentioned technical solutions, it is preferable that signal processing apparatus also includes：Analog-digital converter, with signal generator, letter
Number receiver and microcontroller electrical connection, analog-digital converter, which is used to converting analog signals into pulse signal, to be sent to microcontroller
Device.
In the technical scheme, pulse signal is converted analog signals into by analog-digital converter, microcontroller sends arteries and veins
Rush signal and be converted into analog signal by analog-digital converter, sent out through signal generator, signal receiver receives reflection
Analog signal is converted into pulse signal through analog-digital converter and sent to microcontroller, is easy to microcontroller pulse signals to be known
Do not confirm.
In the above-mentioned technical solutions, it is preferable that also include：At least one first switch part, each first switch part and letter
The series connection of number generator, first switch part are used for outside in response to the circuit where the electric signal communication signal generator of microcontroller
Launching simulation signal.
In the technical scheme, each first switch part is connected with signal generator, can be real by the control to switch member
The connection and disconnection of circuit where existing control signal generator, so as to realize the control that analog signal whether is sent to signal generator
System.
Wherein it is preferred to first switch part selects electromagnetic relay.
In any of the above-described technical scheme, it is preferable that also include：At least one second switch part, each second switch part
Connected with signal receiver, second switch part is used in response to the circuit where the electric signal communication signal receiver of microcontroller
Receive the analog signal by reflection.
In the technical scheme, each second switch part is connected with signal generator, can be real by the control to switch member
The connection and disconnection of circuit where existing control signal receiver, so as to realize the mould whether received to signal receiver by reflection
Intend the control of signal.
Wherein it is preferred to second switch part selects electromagnetic relay.
The technical scheme of second aspect of the present invention proposes a kind of foreign matter detecting method, for heating and ventilating equipment, including：With
One predetermined interval sends out the first analog signal and determines to send the first moment of the first analog signal；Receive the first reverberation
First analog signal of reflection simultaneously determines to receive the second moment of the first analog signal；Determine between the first moment and the second moment
Very first time interval；The first distance value of the first reverberation and heating and ventilating equipment is determined according to very first time interval；Display is corresponding
In the first distance value or the prompt message of the first predetermined interval.
In the technical scheme, the first analog signal is sent out with the first predetermined interval, the first analog signal is in medium
Transmitted in (air) with certain transmission speed, analog signal can be reflected when running into reverberation with same speed, as metope,
During the foreign matters such as dirty stifled thing, frost, it is determined that send the first moment of the first analog signal, the after the reflection of the first reverberation is received
One analog signal simultaneously determines to receive the second moment of the first analog signal, according between the first moment and the determination of the second moment
The very first time interval, determine heating and ventilating equipment extremely according to the transmission speed of very first time interval and the first analog signal in media as well
The distance between reverberation information, display corresponding to range information prompt message, realize to reverberation in signal generator away from
From determination so that judge the species of reverberation and show corresponding to range information prompt message, carry out safety alarm prompting,
The possibility that set heat exchange is bad caused by large area foreign matters from being blocked heat exchanger is reduced, reminds user to clean in time, is lifted
Consumer's Experience.
It should be noted that above-mentioned foreign matter detecting method can realize that measuring unit to metope distance, reduces unit and metope
The excessively near possibility of mounting distance, while the detection of trickle dirty stifled thing on heat exchanging device can also be realized, remind user to clear up in time,
Further, it is also possible to realize the detection to outdoor heat exchanger rime ice stopping state, and heating and ventilating equipment is sent to according to range information and used
To judge whether rime ice thickness needs to perform defrosting operation.
Furthermore, it is necessary to which explanation, the first prefixed time interval can be set according to actual conditions, install and adjust such as heating and ventilating equipment
After examination terminates, judge whether mounting distance is suitable, be arranged on interior detection unit in real time or heat exchanger distance reflection in electric 5min
The distance of thing, such as when heating and ventilating equipment is worked with preset mode, determine whether that large area foreign matter is excessively near apart from heat exchanger, set
Time interval is slightly long, sets predetermined interval such as 2h to send out analog signal, detect unit or heat exchanger apart from reverberation away from
From；When detecting trickle dirty stifled thing, set prefixed time interval such as 720h to send out analog signal, detect on outdoor heat exchanger
Whether formed with certain thickness trickle dirty stifled thing, when judging rime ice thickness, determined according to outdoor temp angle value and defrost logic
Judge the moment, send out analog signal, judge whether rime ice thickness needs to perform defrosting operation.
In addition it is also necessary to explanation, the prompt message corresponding to range information of display includes but is not limited to word, figure
The combination of symbol and word and icon.
In addition it is also necessary to explanation, analog signal includes but is not limited to one below or combination sound wave, electromagnetic wave.
In the above-mentioned technical solutions, it is preferable that display corresponds to the prompt message of the first distance value or the first predetermined interval,
Specifically include：The first distance threshold corresponding to the first predetermined interval is determined according to the first predetermined interval；In the first distance value not
During more than the first distance threshold, control heating and ventilating equipment shows the second prompt message corresponding to the first distance threshold.
It is it is determined that after the first distance value, the first distance value is corresponding with the first predetermined interval in the technical scheme
First is compared contrast apart from threshold values, if the first distance value is less than or equal to no more than first apart from threshold values, illustrates now the
The hypotelorism of one reverberation and heating and ventilating equipment, control heating and ventilating equipment show the second prompting letter apart from threshold values corresponding to first
Breath, safety alarm prompting is carried out to user, the bad possibility of set heat exchange caused by reducing foreign matters from being blocked heating and ventilating equipment, carried
Awake user clears up in time, improves Consumer's Experience.
In the above-mentioned technical solutions, it is preferable that also include：It is determined that the first distance value be not more than the first distance threshold after,
Second analog signal is sent out with the second predetermined interval and determines to send the 3rd moment of the second analog signal；It is anti-to receive second
Penetrate the second analog signal of thing reflection and determine to receive the 4th moment of the second analog signal；During according to the 3rd moment and the 4th
Carve, it is determined that sending the second analog signal and receiving the second time interval of the second analog signal；Determined according to the second time interval
The second distance value of second reverberation and heating and ventilating equipment, until second distance value when being more than the first distance threshold, stops showing the
Two prompt messages.
In the technical scheme, when the first distance value is not more than first apart from threshold values, illustrate the first reverberation and HVAC
The hypotelorism of equipment, the second prompt message is shown, while reminding user's processing, continue to determine that the second reverberation is set with HVAC
Standby distance, until second distance value is more than the first distance threshold, illustrates that the distance of heating and ventilating equipment and foreign matter is suitable, do not interfere with
The normal work of heating and ventilating equipment, user have done processing work, now stop showing the second prompt message.
In the above-mentioned technical solutions, it is preferable that also include：Judge whether the first reverberation belongs to default defrost object, it is raw
Into judged result；If the determination result is YES, then after showing corresponding to the prompt message of the first distance value or the first predetermined interval,
Perform defrosting operation.
In the technical scheme, in the defrost time determined jointly according to outdoor temp angle value and defrost logic, first is judged
Whether reverberation belongs to default defrost object, generates judged result, realizes by determining the first reverberation and heating and ventilating equipment
Distance come determine the thickness of rime ice so that determine the need for perform defrosting operation, if the determination result is YES, illustrate frost now
Ice thickness influences heating and ventilating equipment normal work, then in display corresponding to the first distance value or the prompt message of the first predetermined interval
Afterwards, defrosting operation is performed, improves the accuracy of defrost judgement, reduces the possibility of frostless defrost.
It should be noted that the distance of reverberation and heating and ventilating equipment can also be continued to determine after defrost release,
It is determined that distance be unsatisfactory for predetermined threshold value when, judge that defrost is not clean, control heating and ventilating equipment continue executing with defrosting operation.
The technical scheme of third aspect present invention proposes a kind of heating and ventilating equipment, including：The foreign bodies detection of any of the above-described
System.
In the technical scheme, include the heating and ventilating equipment of any one foreign matter detection system, can be achieved to reverberation in signal
Generator determination of distance and then judge the species of reverberation and show the prompt message corresponding to range information, both can be to warm
The initialization environment of logical equipment is detected, to judge whether initialization environment meets wanting for heating and ventilating equipment normal work
Ask, can also be for being likely to occur in heating and ventilating equipment running the problem of is detected and makes early warning in time, so as to warm
Logical equipment, which is made, timely to be safeguarded, reduces the fault rate of heating and ventilating equipment, extends the service life of heating and ventilating equipment.
Wherein, heating and ventilating equipment includes but is not limited to air conditioner, ventilation shaft, radiator, electric heating equipment or any and heating
Divulge information relevant equipment.
The technical scheme of fourth aspect present invention proposes a kind of computer equipment, including memory, processor and storage
On a memory and the computer program that can run on a processor, any of the above-described is performed during computing device computer program
Foreign matter detecting method.
In the technical scheme, the computer program for performing the foreign matter detecting method of any of the above-described is stored in memory
On, during computing device computer program, it can be achieved to reverberation and signal generator determination of distance and then judge reverberation
Species and show the prompt message corresponding to range information, initialization environment that both can be to equipment detects, so as to
Judge whether initialization environment meets the requirement of equipment normal work, can also be for being likely to occur in equipment running process
Problem is detected and makes early warning in time, is timely safeguarded to be made to equipment, reduces the fault rate of equipment, extension device
Service life.
The technical scheme of fifth aspect present invention proposes a kind of computer-readable recording medium, is stored thereon with computer
Program, the foreign matter detecting method of any of the above-described is realized when computer program is executed by processor.
In the technical scheme, processor realizes that foreign matter detecting method as described above is needed by computer program, this
Kind computer program needs to be stored in computer-readable medium.This computer-readable medium ensure that computer program
It can be executed by processor, it is achieved thereby that to reverberation and signal generator determination of distance and then judging the species of reverberation
And the prompt message corresponding to range information is shown, initialization environment that both can be to equipment detects, to judge just
Whether beginning working environment meets the requirement of equipment normal work, and can also be for being likely to occur in equipment running process the problem of enters
Row detects and makes early warning in time, is timely safeguarded to be made to equipment, reduces the fault rate of equipment, the use of extension device
Life-span.
The additional aspect and advantage of the present invention will become obvious in following description section, or the practice by the present invention
Recognize.
Brief description of the drawings
The above-mentioned and additional aspect and advantage of the present invention will become bright in the description from combination accompanying drawings below to embodiment
Show and be readily appreciated that, wherein：
Fig. 1 shows the structural representation of foreign matter detection system according to an embodiment of the invention；
Fig. 2 shows the schematic flow sheet of foreign matter detecting method according to an embodiment of the invention；
Fig. 3 shows the structural representation of heating and ventilating equipment according to an embodiment of the invention；
Fig. 4 shows the structural representation of computer equipment according to an embodiment of the invention.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 1 shows the structural representation of foreign matter detection system according to an embodiment of the invention.
As shown in figure 1, foreign matter detection system, including：
At least one signal processing apparatus 102, on the shell of heating and ventilating equipment or the heat exchanger of heating and ventilating equipment, at signal
Reason device 102 is including for sending out the signal generator 1022 of analog signal and for receiving after reverberation reflects
The signal receiver 1024 of analog signal；
Microcontroller 104, electrically connected with signal processing apparatus 102, microcontroller 104 is sent out with prefixed time interval to signal
Raw device 1022 sends electric signal and sends out analog signal with control signal generator 1022；
Timer 106, electrically connected with signal processing apparatus 102 and microcontroller 104, timer 106 is determined to outgoing
Go out the first moment of analog signal and receive the second moment of analog signal, the first moment and the second moment are sent to micro-
Controller 104；
Display device 108, electrically connected with microcontroller 104, microcontroller 104 is in response to the first moment and the second moment
Between duration determine signal generator to the distance between reverberation information, display device 108, which is used to show, corresponds to distance
The prompt message of information.
In this embodiment, foreign matter detection system includes at least one signal processing apparatus 102, microcontroller 104, timing
Device 106 and display device 108, the control signal generator 1022 of microcontroller 104 send out analog signal with predetermined interval,
Analog signal is transmitted in medium (air) with certain transmission speed, and analog signal can be with identical speed when running into reverberation
Degree reflection, when such as metope, dirty stifled thing, frost foreign matter, timer 106 determines to send the first moment of analog signal, and signal connects
Receive device 1024 and receive the analog signal after reverberation reflects, timer 106 determines to receive the second moment of analog signal, timing
Device 106 sends the first moment of determination and the second moment to microcontroller 104, microcontroller 104 according to the first moment and
The transmission speed of duration and analog signal in media as well between second moment determine signal generator 1022 to reverberation it
Between range information, microprocessor control display device 108 display corresponding to range information prompt message, realize to reverberation
With the determination of distance of signal generator 1022 and then judge the species of reverberation and show the prompt message corresponding to range information,
Safety alarm prompting is carried out, reduces the possibility that set heat exchange is bad caused by large area foreign matters from being blocked heat exchanger, is reminded
User cleans in time, improves Consumer's Experience.
It should be noted that according to the difference of the installation site of signal generator 1022, above-mentioned foreign matter detection system can be realized
Measuring unit reduces unit and the excessively near possibility of metope mounting distance, while can also realize on heat exchanging device to metope distance
The detection of trickle dirty stifled thing, user is reminded to clear up in time, further, it is also possible to realize the inspection to outdoor heat exchanger rime ice stopping state
Survey, and heating and ventilating equipment is sent to judge whether rime ice thickness needs to perform defrosting operation according to range information.
Furthermore, it is necessary to explanation, according to the difference of the installation site of signal generator 1022, between its corresponding preset time
Every can according to circumstances set, after terminating such as heating and ventilating equipment installation and debugging, judge whether mounting distance is suitable, be arranged on electric 5min
In it is interior in real time detection unit or heat exchanger apart from the distance of reverberation, such as when heating and ventilating equipment is worked with preset mode, judgement is
It is no to have large area foreign matter excessively near apart from heat exchanger, set interval slightly long, set predetermined interval such as 2h to send out simulation letter
Number, detect the distance of unit or heat exchanger apart from reverberation；When detecting trickle dirty stifled thing, prefixed time interval such as 720h is set
Analog signal is sent out, whether detects on outdoor heat exchanger formed with certain thickness trickle dirty stifled thing, judges rime ice thickness
When, according to outdoor temp angle value and the judgement moment of defrost logic determination, analog signal is sent out, judges whether rime ice thickness needs
Perform defrosting operation.
In addition it is also necessary to explanation, the prompt message corresponding to range information that display device 108 is shown is included but not
It is limited to the combination of word, icon and word and icon.
Also settable audio-frequency module in above-mentioned foreign matter detection system, to play the audio for corresponding to prompt message.
In addition it is also necessary to explanation, analog signal includes but is not limited to one below or combination sound wave, light wave.
In the above embodiment, it is preferable that signal processing apparatus 102 also includes：Analog-digital converter, with signal generator
1022nd, signal receiver 1024 and microcontroller 104 electrically connect, and analog-digital converter is used to convert analog signals into pulse signal
Send to microcontroller 104.
In this embodiment, pulse signal is converted analog signals into by analog-digital converter, microcontroller 104 sends arteries and veins
Rush signal and be converted into analog signal by analog-digital converter, sent out through signal generator 1022, signal receiver 1024 connects
The analog signal of receipts reflection is converted into pulse signal through analog-digital converter and sent to microcontroller 104.
In the above embodiment, it is preferable that also include：At least one first switch part, each first switch part and signal
Generator 1022 is connected, and first switch part is in response to the electricity where the electric signal communication signal generator 1022 of microcontroller 104
Road is used for outside launching simulation signal.
In this embodiment, each first switch part is connected with signal generator 1022, can by the control to switch member
The connection and disconnection of the place circuit of control signal generator 1022 are realized, so as to realize to whether signal generator 1022 sends mould
Intend the control of signal.
Wherein it is preferred to first switch part selects electromagnetic relay.
In the above embodiment, it is preferable that also include：At least one second switch part, each second switch part and signal
Receiver 1024 is connected, and second switch part is in response to the electricity where the electric signal communication signal receiver 1024 of microcontroller 104
Road is used to receive the analog signal by reflection.
In this embodiment, each second switch part is connected with signal generator 1022, can by the control to switch member
The connection and disconnection of the place circuit of control signal receiver 1024 are realized, so as to realize to whether signal receiver 1024 receives warp
Cross the control of the analog signal of reflection.
Wherein it is preferred to second switch part selects electromagnetic relay.
Specific embodiment one：
Received using piezoelectric ceramic transducer and transducer signal process chip and ultrasonic wave transmitting circuit and ultrasonic wave
Circuit realizes the effect of signal processing apparatus, the effect of microcontroller is realized using single-chip microcomputer, using high accurate calculagraph
To realize the effect of time set, the effect of display device is realized using man machine operation interface, foreign matter detection system is used for examining
Survey heating and ventilating equipment units' installation distance or whether exchanged heat just like foreign matters from being blocked such as the metal plates, leatheroid, plastic sheeting disassembled
, can be by piezoelectric ceramics heat exchanger installed outdoors or on heating and ventilating equipment shell metal plate during device.
After heating and ventilating equipment installation and debugging terminate, interior real time execution foreign matter detection system in electric 5min is arranged on.
Foreign matter detection system work comprises the following steps：Single-chip microcomputer is connect with predetermined interval control transducer signal process chip
Logical ultrasonic wave transmitting circuit control piezoelectric ceramic transducer sends out ultrasonic wave, after the completion of ultrasonic wave transmitting, transducer letter
Number process chip connects ultrasonic wave receiving circuit to receive the ultrasonic wave through reflection, and transducer signal process chip is sending/connect
The pulse signal of start/stop can be produced by receiving the moment of ultrasonic wave, and high accurate calculagraph is true by the pulse signal of start/stop
Surely send ultrasonic wave and receive the time of ultrasonic wave, single-chip microcomputer is true according to the time and the time for receiving ultrasonic wave for sending ultrasonic wave
Fix time difference, and then determine distance of the reverberation apart from heating and ventilating equipment, when distance is less than predetermined threshold value, predetermined threshold value can be advance
Storage is set, and display corresponds to the excessively near prompt message of heating and ventilating equipment mounting distance.
Specific embodiment two：
Received using piezoelectric ceramic transducer and transducer signal process chip and ultrasonic wave transmitting circuit and ultrasonic wave
Circuit realizes the effect of signal processing apparatus, the effect of microcontroller is realized using single-chip microcomputer, using high accurate calculagraph
To realize the effect of time set, the effect of display device is realized using man machine operation interface, foreign matter detection system is used for examining
Survey heating and ventilating equipment units' installation distance or whether exchanged heat just like foreign matters from being blocked such as the metal plates, leatheroid, plastic sheeting disassembled
During device, or the accumulation thickness of the dirty stifled thing of such as dust, catkin after long-play is detected, or whether defrost is complete for detection heating and ventilating equipment
Cheng Shi, piezoelectric ceramics need to be embedded in inside heating and ventilating equipment outdoor heat exchanger.
Foreign matter detection system is run after heating and ventilating equipment runs 720h.
Foreign matter detection system work comprises the following steps：Single-chip microcomputer is connect with predetermined interval control transducer signal process chip
Logical ultrasonic wave transmitting circuit control piezoelectric ceramic transducer sends out ultrasonic wave, after the completion of ultrasonic wave transmitting, transducer letter
Number process chip connects ultrasonic wave receiving circuit to receive the ultrasonic wave through reflection, and transducer signal process chip is sending/connect
The pulse signal of start/stop can be produced by receiving the moment of ultrasonic wave, and high accurate calculagraph is true by the pulse signal of start/stop
Surely send ultrasonic wave and receive the time of ultrasonic wave, single-chip microcomputer is true according to the time and the time for receiving ultrasonic wave for sending ultrasonic wave
Fix time difference, and then determine distance of the reverberation apart from heating and ventilating equipment, when distance is less than predetermined threshold value, predetermined threshold value can be advance
Storage is set, prompt message of the display corresponding to foreign matters from being blocked heating and ventilating equipment.
Fig. 2 shows the schematic flow sheet of foreign matter detecting method according to an embodiment of the invention.
As shown in Fig. 2 foreign matter detecting method, including：
Step S202, the first analog signal is sent out with the first predetermined interval and determines to send the of the first analog signal
One moment；
Step S204, receive the first analog signal of the first reverberation reflection and determine to receive the second of the first analog signal
Moment；
Step S206, determine the very first time interval between the first moment and the second moment；
Step S208, the first distance value of the first reverberation and heating and ventilating equipment is determined according to very first time interval；
Step S210, display is corresponding to the first distance value or the prompt message of the first predetermined interval.
In this embodiment, step S202, the first analog signal, the first analog signal are sent out with the first predetermined interval
To be transmitted in medium (air) with certain transmission speed, analog signal can be reflected when running into reverberation with same speed,
When such as metope, dirty stifled thing, frost foreign matter, it is determined that sending the first moment of the first analog signal, step S204, receive through first
Reverberation reflection after the first analog signal and determine receive the first analog signal the second moment, step S206, according to first
Very first time interval between moment and the determination of the second moment, step S208, is simulated according to very first time interval and first
The transmission speed of signal in media as well determines that heating and ventilating equipment to the distance between reverberation information, step S210, display corresponds to
The prompt message of range information, realize to reverberation in signal generator determination of distance and then judge the species of reverberation and show
Show the prompt message corresponding to range information, carry out safety alarm prompting, reduce because large area foreign matters from being blocked heat exchanger causes
The bad possibility of set heat exchange, remind user to clean in time, improve Consumer's Experience.
It should be noted that above-mentioned foreign matter detecting method can realize that measuring unit to metope distance, reduces unit and metope
The excessively near possibility of mounting distance, while the detection of trickle dirty stifled thing on heat exchanging device can also be realized, remind user to clear up in time,
Further, it is also possible to realize the detection to outdoor heat exchanger rime ice stopping state, and heating and ventilating equipment is sent to according to range information and used
To judge whether rime ice thickness needs to perform defrosting operation.
Furthermore, it is necessary to which explanation, the first prefixed time interval can be set according to actual conditions, install and adjust such as heating and ventilating equipment
After examination terminates, judge whether mounting distance is suitable, be arranged on interior detection unit in real time or heat exchanger distance reflection in electric 5min
The distance of thing, such as when heating and ventilating equipment is worked with preset mode, determine whether that large area foreign matter is excessively near apart from heat exchanger, set
Time interval is slightly long, sets predetermined interval such as 2h to send out analog signal, detect unit or heat exchanger apart from reverberation away from
From；When detecting trickle dirty stifled thing, set prefixed time interval such as 720h to send out analog signal, detect on outdoor heat exchanger
Whether formed with certain thickness trickle dirty stifled thing, when judging rime ice thickness, determined according to outdoor temp angle value and defrost logic
Judge the moment, send out analog signal, judge whether rime ice thickness needs to perform defrosting operation.
In addition it is also necessary to explanation, the prompt message corresponding to range information of display includes but is not limited to word, figure
The combination of symbol and word and icon.
In addition it is also necessary to explanation, analog signal includes but is not limited to one below or combination sound wave, light wave.
In the above embodiment, it is preferable that step S210, display carries corresponding to the first distance value or the first predetermined interval
Show information, specifically include：The first distance threshold corresponding to the first predetermined interval is determined according to the first predetermined interval；First away from
When being not more than the first distance threshold from value, control heating and ventilating equipment shows the second prompt message corresponding to the first distance threshold.
In this embodiment, it is determined that after the first distance value, by the first distance value it is corresponding with the first predetermined interval
One is compared contrast apart from threshold values, if the first distance value is less than or equal to no more than first apart from threshold values, illustrates now first
The hypotelorism of reverberation and heating and ventilating equipment, control heating and ventilating equipment show the second prompt message corresponding to first apart from threshold values,
Safety alarm prompting is carried out to user, the bad possibility of set heat exchange caused by reducing foreign matters from being blocked heating and ventilating equipment, is reminded
User clears up in time, improves Consumer's Experience.
In the above embodiment, it is preferable that also include：It is determined that the first distance value be not more than the first distance threshold after, with
Second predetermined interval sends out the second analog signal and determines to send the 3rd moment of the second analog signal；Receive the second reflection
Second analog signal of thing reflection simultaneously determines to receive the 4th moment of the second analog signal；According to the 3rd moment and the 4th moment,
It is determined that send the second analog signal and receive the second time interval of the second analog signal；Second is determined according to the second time interval
The second distance value of reverberation and heating and ventilating equipment, until when second distance value is more than the first distance threshold, stops display second and carry
Show information.
In this embodiment, when the first distance value is not more than first apart from threshold values, illustrate that the first reverberation is set with HVAC
Standby hypotelorism, the second prompt message is shown, while reminding user's processing, continue to determine the second reverberation and heating and ventilating equipment
Distance, until second distance value is more than the first distance threshold, illustrates that the distance of heating and ventilating equipment and foreign matter is suitable, do not interfere with warm
The normal work of logical equipment, user have done processing work, now stop showing the second prompt message.
In the above embodiment, it is preferable that also include：Judge whether the first reverberation belongs to default defrost object, generate
Judged result；If the determination result is YES, then held after showing corresponding to the prompt message of the first distance value or the first predetermined interval
Row defrosting operation.
In this embodiment, in the defrost time determined jointly according to outdoor temp angle value and defrost logic, judge that first is anti-
Penetrate thing and whether belong to default defrost object, generate judged result, realize by determine the first reverberation and heating and ventilating equipment away from
From come determine the thickness of rime ice so that determine the need for perform defrosting operation, if the determination result is YES, illustrate rime ice now
Thickness effect heating and ventilating equipment normal work, then after showing corresponding to the prompt message of the first distance value or the first predetermined interval,
Defrosting operation is performed, improves the accuracy of defrost judgement, reduces the possibility of frostless defrost.
It should be noted that the distance of reverberation and heating and ventilating equipment can also be continued to determine after defrost release,
It is determined that distance be unsatisfactory for predetermined threshold value when, judge that defrost is not clean, control heating and ventilating equipment continue executing with defrosting operation.
Fig. 3 shows the structural representation of heating and ventilating equipment according to an embodiment of the invention.
As shown in figure 3, heating and ventilating equipment 30, including：
Foreign matter detection system 302, the corresponding prompt message of distance and display for detecting reverberation and heating and ventilating equipment.
In this embodiment, include the heating and ventilating equipment 30 of any foreign matter detection system 302, can realize to reverberation in letter
Number generator determination of distance and then judge the species of reverberation and show the prompt message corresponding to range information, both can be right
The initialization environment of heating and ventilating equipment is detected, to judge whether initialization environment meets heating and ventilating equipment normal work
It is required that can also be for being likely to occur in heating and ventilating equipment running the problem of, is detected and makes early warning in time, so as to right
Heating and ventilating equipment, which is made, timely to be safeguarded, reduces the fault rate of heating and ventilating equipment, extends the service life of heating and ventilating equipment.
Fig. 4 shows the structural representation of computer equipment according to an embodiment of the invention.
As shown in figure 4, computer equipment 1, including：
Memory 12, memory 12 are used to store computer program；
Processor 14, processor 14 are used to perform the computer program stored in memory；
Processor 14 performs following steps when performing computer program：
First analog signal is sent out with the first predetermined interval and determines to send the first moment of the first analog signal；Connect
Receive the first analog signal of the first reverberation reflection and determine to receive the second moment of the first analog signal；Determine the first moment and
Very first time interval between second moment；The first distance of the first reverberation and heating and ventilating equipment is determined according to very first time interval
Value；Display is corresponding to the first distance value or the prompt message of the first predetermined interval.
In this embodiment, the computer program for performing the foreign matter detecting method of any of the above-described is stored in memory 12
On, when processor 14 performs computer program, it can be achieved to reflect reverberation in signal generator determination of distance and then judgement
The species of thing simultaneously shows the prompt message corresponding to range information, and initialization environment that both can be to equipment detects, with
Just judge whether initialization environment meets the requirement of equipment normal work, can also be for being likely to occur in equipment running process
The problem of detected and make early warning in time, timely safeguarded to be made to equipment, reduce the fault rate of equipment, extension is set
Standby service life.
Technical scheme is described in detail above in association with accompanying drawing, a kind of foreign matter detection system, method and HVAC are set
It is standby, by technical scheme, it can realize that distance display, dirty stifled detection and defrost effect detection and warning are reminded.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean to combine at least one reality that specific features, structure, material or the feature that the embodiment or example describe are contained in the present invention
Apply in example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term
Example.Moreover, description specific features, structure, material or feature can in any one or more embodiments or example with
Suitable mode combines.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
- A kind of 1. foreign matter detection system, for heating and ventilating equipment, it is characterised in that including：At least one signal processing apparatus, it is each described on the shell of heating and ventilating equipment or the heat exchanger of the heating and ventilating equipment Signal processing apparatus is including for sending out the signal generator of analog signal and for receiving after reverberation reflects The signal receiver of the analog signal；Microcontroller, electrically connected with the signal processing apparatus, the microcontroller is sent out with prefixed time interval to the signal Raw device sends electric signal to control the signal generator to send out the analog signal；Timer, electrically connected with the signal processing apparatus and the microcontroller, the timer determines to send out institute State the first moment of analog signal and receive the second moment of the analog signal, by first moment and described second Moment is sent to the microcontroller；Display device, electrically connected with the microcontroller, the microcontroller is in response to first moment and described second Duration between moment determines the signal generator to the distance between reverberation information, and the display device is used to show Show the prompt message corresponding to the range information.
- 2. foreign matter detection system according to claim 1, it is characterised in that the signal processing apparatus also includes：Analog-digital converter, electrically connected with the signal generator, the signal receiver and the microcontroller, the modulus turns Parallel operation is sent to the microcontroller for the analog signal to be converted into pulse signal.
- 3. foreign matter detection system according to claim 2, it is characterised in that also include：At least one first switch part, each first switch part are connected with the signal generator, the first switch part It is used to outwards launch the mould in response to the circuit where signal generator described in the electric signal communication of the microcontroller Intend signal.
- 4. the foreign matter detection system according to Claims 2 or 3, it is characterised in that also include：At least one second switch part, each second switch part are connected with the signal receiver, the second switch part It is used to receive by reflection in response to the circuit where signal receiver described in the electric signal communication of the microcontroller The analog signal.
- A kind of 5. foreign matter detecting method, for heating and ventilating equipment, it is characterised in that including：First analog signal is sent out with the first predetermined interval and determines to send the first moment of first analog signal；Receive first analog signal of the first reverberation reflection and determine to receive the second moment of first analog signal；Determine the very first time interval between first moment and second moment；The first distance value of first reverberation and the heating and ventilating equipment is determined according to the very first time interval；Display is corresponding to first distance value or the prompt message of first predetermined interval.
- 6. foreign matter detecting method according to claim 5, it is characterised in that the display corresponds to first distance value Or the prompt message of first predetermined interval, specifically include：The first distance threshold corresponding to first predetermined interval is determined according to first predetermined interval；When first distance value is not more than first distance threshold, the heating and ventilating equipment is controlled to show corresponding to described the Second prompt message of one distance threshold.
- 7. foreign matter detecting method according to claim 6, it is characterised in that also include：It is determined that first distance value sends out the second mould no more than after first distance threshold with the second predetermined interval Intend signal and determine to send the 3rd moment of the second analog signal；Receive second analog signal of the second reverberation reflection and determine to receive the 4th moment of second analog signal；According to the 3rd moment and the 4th moment, it is determined that sending second analog signal and receiving second simulation Second time interval of signal；The second distance value of second reverberation and the heating and ventilating equipment is determined according to second time interval, until described When second distance value is more than first distance threshold, stop showing second prompt message.
- 8. foreign matter detecting method according to claim 5, it is characterised in that also include：Judge whether first reverberation belongs to default defrost object, generate judged result；If the judged result is yes, the prompting letter in display corresponding to first distance value or first predetermined interval After breath, defrosting operation is performed.
- A kind of 9. heating and ventilating equipment, it is characterised in that including：Foreign matter detection system any one of Claims 1-4.
- 10. a kind of computer equipment, including memory, processor and it is stored on the memory and can be on the processor The computer program of operation, it is characterised in that realize such as claim 5 to 8 described in the computing device during computer program Any one of foreign matter detecting method.
- 11. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the computer program The foreign matter detecting method as any one of claim 5 to 8 is realized when being executed by processor.
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| CN201710613026.7A CN107422396B (en) | 2017-07-25 | 2017-07-25 | Foreign matter detection system, foreign matter detection method and heating and ventilation equipment |
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