CN110779156B - Start prevention detection method and system and air conditioner - Google Patents

Start prevention detection method and system and air conditioner Download PDF

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Publication number
CN110779156B
CN110779156B CN201911159546.0A CN201911159546A CN110779156B CN 110779156 B CN110779156 B CN 110779156B CN 201911159546 A CN201911159546 A CN 201911159546A CN 110779156 B CN110779156 B CN 110779156B
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China
Prior art keywords
load
detection
prevention
parameters
range
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Application number
CN201911159546.0A
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Chinese (zh)
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CN110779156A (en
Inventor
赖元华
邝振威
庞西勇
明开云
李国耀
尹勇杰
占钟生
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201911159546.0A priority Critical patent/CN110779156B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32Responding to malfunctions or emergencies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32Responding to malfunctions or emergencies
    • F24F11/38Failure diagnosis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/88Electrical aspects, e.g. circuits

Abstract

The invention provides a start prevention detection method, a system and an air conditioner, wherein the start prevention detection method comprises the steps of setting a detection threshold value before a load starts to operate, and applying a test voltage to the load; and integrating the detection parameters of the load, comparing the detection parameters with the detection threshold, starting the load if the detection parameters fall into the range of the detection threshold, and keeping the load in a shutdown state if the detection parameters do not fall into the range of the detection threshold. Compared with the prior art, the start prevention detection method provided by the invention has the advantages that the test voltage is added on the load, the detection parameter of the load is detected and compared with the detection threshold value, and the load is allowed to start after the detection parameter of the load is determined to be within the normal range. The method has the advantages that the trial operation is performed before the load is operated, whether the load can be operated or not is detected, the condition that the load is easy to break down when the load is directly started is avoided, and the safety of load starting is greatly improved.

Description

Start prevention detection method and system and air conditioner
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a start prevention detection method and system and an air conditioner.
Background
With the improvement and improvement of the life of people, various electric appliances become an essential part of the life of people.
Some using methods of the electric appliance are always very important and necessary in the process of using the electric appliance, the using methods and the control method of the electric appliance are relevant, and when the control method has problems, the use of the electric appliance is influenced to a great extent.
For the air conditioner, when the air conditioner is abnormal, such as a load circuit is damaged and short-circuited, a device is short-circuited, an enameled wire is damaged, the control system cannot recognize the abnormality in time, the air conditioner can be started by multiple attempts without knowing whether the air conditioner is normal, and finally the load is seriously burnt out, the device is burnt out, the damaged range is enlarged, and the whole electric appliance is possibly burnt out, even the air conditioner is on fire and the like.
Disclosure of Invention
The invention aims to provide a start prevention detection method, a start prevention detection system and an air conditioner, and aims to solve the problem that starting is prone to failure in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a method of start-up prevention detection comprising: before the load starts to operate, setting a detection threshold value, and applying a test voltage to the load; and integrating the detection parameters of the load, comparing the detection parameters with the detection threshold, starting the load if the detection parameters fall into the range of the detection threshold, and keeping the load in a shutdown state if the detection parameters do not fall into the range of the detection threshold.
Further, the detection value of the detection parameter does not fall within the range of the detection threshold, the load keeps a shutdown state, and an abnormal information value is recorded.
Further, the detection parameter includes a resistance value of the insulation resistor.
Further, if the detected resistance value of the insulation resistor is larger than the insulation resistor threshold value, the load is started, otherwise, the load keeps a shutdown state.
Further, the detection parameter further includes a value of the leakage current.
Further, if the detected leakage current value is smaller than the leakage current threshold value, the load is started, otherwise, the load keeps a shutdown state.
Further, the range of the test voltage is 0-36V.
Another objective of the present invention is to provide a start prevention detection system, which includes a power switch, a detection unit, and a main control unit, wherein the power switch is connected in series in a power line of a load, and is used for switching on and off the power supply of the load; the detection unit is used for applying a test voltage to the load and collecting detection parameters; and the main control unit judges whether the detection parameters fall into the range of the detection threshold value according to the detection parameters so as to control the on-off of the power switch.
Further, the start prevention detection system further comprises a storage module for recording and storing the abnormal information value.
It is still another object of the present invention to provide a start-up prevention detection system including the above start-up prevention detection system.
The start prevention detection method provided by the invention has the beneficial effects that: compared with the prior art, the method has the advantages that the test voltage is applied to the load, the detection parameter of the load is detected and compared with the detection threshold value, and the load is allowed to start after the detection parameter of the load is determined to be within the normal range. The method is equivalent to that the load is firstly subjected to test operation under the detection voltage before the load is started, and if the test operation of the load is normal, the load is allowed to be normally started. And if the load test operation does not reach the standard, the load is not allowed to start to operate. The method has the advantages that the trial operation is performed before the load is operated, whether the load can be operated or not is detected, the condition that the load is easy to break down when the load is directly started is avoided, and the safety of load starting is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow structure diagram of a method for starting a prevention detection according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of load detection according to an embodiment of the present invention, in which a part of the structure is not shown;
fig. 3 is a schematic structural diagram of load detection according to an embodiment of the present invention, and a partial structure is not shown.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to fig. 3, a method for detecting a start-up prevention according to an embodiment of the present invention will now be described. The start prevention detection method comprises the following steps of setting a detection threshold value in advance before a load starts to operate, and applying a test voltage to the load, wherein the value range of the test voltage is 0-36V. And integrating the detection parameters of the load, comparing the detection parameters with the detection threshold, starting the load if the detection parameters fall into the detection threshold, and keeping the original state of the load to be not started if the detection parameters do not fall into the detection threshold. Before the load is started, testing the detection parameters of the load, and allowing the load to be started when the detection parameters of the load fall into the range of the detection threshold, otherwise, keeping the load in the original shutdown state and not starting the load.
Compared with the prior art, the start prevention detection method provided by the invention has the advantages that the test voltage is added on the load, the detection parameter of the load is detected and compared with the detection threshold value, and the load is allowed to start after the detection parameter of the load is determined to be within the normal range. The method is equivalent to that the load is firstly subjected to test operation under the detection voltage before the load is started, and if the test operation of the load is normal, the load is allowed to be normally started. And if the load test operation does not reach the standard, the load is not allowed to start to operate. The method has the advantages that the trial operation is performed before the load is operated, whether the load can be operated or not is detected, the condition that the load is easy to break down when the load is directly started is avoided, and the safety of load starting is greatly improved.
Further, referring to fig. 1 to fig. 3, as a specific embodiment of the start prevention detection method provided by the present invention, if the detection value of the detection parameter does not fall within the range of the detection threshold, the load keeps the shutdown state, and the abnormal information value is recorded, so as to facilitate the analysis of the reason for the load abnormality, facilitate the related personnel to overhaul and maintain the load, to eliminate the reason for the load failure, and avoid the load from having the same problem again.
Further, referring to fig. 1 to fig. 3 together, as an embodiment of the start-up prevention detection method provided by the present invention, the detection parameters include the resistance value of the insulation resistor and the magnitude of the leakage current value, if the detected resistance value of the insulation resistor is greater than the insulation resistor threshold value, the load is started, otherwise, the load is continuously stopped while remaining unchanged. If the detected leakage current value is smaller than the leakage current threshold value, the load is started, otherwise, the load is kept in a shutdown state. For example, the insulation resistance threshold is set to 1M Ω, and the leakage current threshold is set to 30mA ± 10%.
In addition to the detection of insulation resistance and leakage current mentioned above, the detection parameter may be a temperature change rate, and whether the load can be started or not is determined by testing the temperature change rate at which the load is trial-run at the test voltage.
Further, referring to fig. 1 to 3 together, as a specific embodiment of the start-up prevention detection method provided by the present invention, the value range of the test voltage is 0 to 36V, and the test voltage is selected from the above range through experiments and tests of the inventor in order to select a relatively low voltage to prevent injury to human body during use.
Referring to fig. 2 and fig. 3, the present invention further provides a start prevention detection system, which includes a power switch, a detection unit and a main control unit. The power supply to the load is realized by the power supply switch which is connected in series with the power line of the load. The detection unit applies test voltage to the load for acquiring detection parameters. And after the detection parameters are collected and collected, the main control unit compares the detection parameters with the detection threshold value according to the detection parameters, judges whether the detection parameters fall into the range of the detection threshold value, and controls the power switch to be closed if the detection parameters fall into the range of the detection threshold value, so that the load starts to work. And if the detection parameter does not fall into the range of the detection threshold, the main control unit controls the power switch to keep the disconnected state.
Further, as a specific implementation manner of the start prevention detection system provided by the present invention, the start prevention detection system further includes a storage module, and as mentioned above, if the detection parameter does not fall within the range of the detection threshold, the power switch is kept turned off, and the storage module records and stores the occurred abnormal information value, so as to facilitate analysis of the reason for the load to become abnormal, which is beneficial for related personnel to overhaul and maintain the load, so as to eliminate the reason for the load to become faulty, and avoid the load from having the same problem again.
The invention also provides an air conditioner which comprises the start prevention detection system.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (1)

1. An air conditioner, characterized in that: the air conditioner use start prevention detection method comprises the following steps:
the power switch is connected in series in a power line of a load and used for switching on and off a load power supply;
before a load starts to operate, setting a detection threshold, and applying a test voltage to the load, wherein the test voltage range is 0-36V;
integrating detection parameters of the load, comparing the detection parameters with a detection threshold, if the detection parameters fall into the range of the detection threshold, controlling the power switch to be switched on and the load to be started, otherwise, controlling the power switch to be switched off and the load to be in a shutdown state, and recording abnormal information values;
the detection parameters comprise the temperature change rate of the test operation of the load under the test voltage, the resistance value of the insulation resistor and the numerical value of the leakage current;
if the detected resistance value of the insulation resistor is larger than the insulation resistor threshold value, starting the load, otherwise, continuing to stop the machine if the load is kept unchanged;
if the detected leakage current value is smaller than the leakage current threshold value, the load is started, otherwise, the load is kept in a shutdown state.
CN201911159546.0A 2019-11-22 2019-11-22 Start prevention detection method and system and air conditioner Active CN110779156B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911159546.0A CN110779156B (en) 2019-11-22 2019-11-22 Start prevention detection method and system and air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911159546.0A CN110779156B (en) 2019-11-22 2019-11-22 Start prevention detection method and system and air conditioner

Publications (2)

Publication Number Publication Date
CN110779156A CN110779156A (en) 2020-02-11
CN110779156B true CN110779156B (en) 2021-05-25

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5603807B2 (en) * 2011-03-07 2014-10-08 Ntn株式会社 Electric vehicle drive motor diagnosis device and diagnosis method, and electric vehicle drive motor diagnosis device
CN102255278B (en) * 2011-07-01 2014-04-16 河北工业大学 Comprehensive leakage protector
CN103558499B (en) * 2013-11-18 2017-01-25 深圳市英威腾电气股份有限公司 Electric leakage detection device of explosive-proof frequency converter
US10018660B2 (en) * 2014-06-12 2018-07-10 Taiwan Semiconductor Manufacturing Company, Ltd. Output resistance testing structure
KR20160046420A (en) * 2014-10-20 2016-04-29 현대자동차주식회사 Relay Re-connection Method in Battery Management System
CN108398617A (en) * 2018-02-12 2018-08-14 江苏师范大学 A kind of detection of super-pressure electrical body failure and transmitting device and detection method

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