CN112256073B - Temperature and humidity test chamber safety control method and device, electronic equipment and storage medium - Google Patents
Temperature and humidity test chamber safety control method and device, electronic equipment and storage medium Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 193
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- 238000004590 computer program Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
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- 238000005057 refrigeration Methods 0.000 abstract description 11
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- 206010053615 Thermal burn Diseases 0.000 description 5
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
Abstract
The invention provides a safety control method and device for a temperature and humidity test chamber, electronic equipment and a storage medium, wherein the current temperature value of air in the temperature and humidity test chamber and fault state information of a refrigerating system are obtained when a test is stopped; judging whether a door opening condition is met or not according to the current temperature value; if so, unlocking a box door of the temperature and humidity test box; if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box; if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal is received so as to judge whether a person is in a dangerous area; if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber; therefore, under the condition of the fault of the refrigeration system, the high-temperature air scalding is avoided while the fact that a worker can open the test box door in time is guaranteed.
Description
Technical Field
The invention relates to the technical field of environmental tests, in particular to a temperature and humidity test chamber safety control method and device, electronic equipment and a storage medium.
Background
Temperature and humidity test case is one kind of environmental test case, generally, after accomplishing the experiment or when carrying out the test in-process and need stop the experiment temporarily, if be high temperature state or high temperature and high humidity state before stopping, because the air temperature in the test case is higher, if the staff directly opens the test chamber door, easily is scalded by the high temperature air. Therefore, some temperature and humidity test boxes can lock the test box door in the test process, and are cooled through a refrigerating system when the test is stopped until the temperature is reduced to a safe range, and the locking is released; however, when the temperature and humidity test chamber needs to stop the test due to the failure of the refrigeration system, normal temperature reduction cannot be performed, the time for natural temperature reduction is long, and a worker needs to wait for a long time to open the test chamber door; sometimes, the staff needs to open the test box door in time after the test is stopped (some test articles need to be taken out in time after the test is stopped), and in this case, the test box door is difficult to open in time because the test box door is locked.
Disclosure of Invention
In view of the defects of the prior art, an object of the embodiment of the application is to provide a method and a device for safely controlling a temperature and humidity test chamber, an electronic device and a storage medium, which can ensure that a worker can timely open a test chamber door and avoid being scalded by high-temperature air under the condition of a fault of a refrigeration system.
In a first aspect, an embodiment of the present application provides a method for safely controlling a temperature and humidity test chamber, which is applied to the temperature and humidity test chamber, and includes the steps of:
A1. acquiring the current temperature value of air in a temperature and humidity test box and fault state information of a refrigerating system when a test is stopped; the fault state information is fault information or non-fault information;
A2. judging whether a door opening condition is met or not according to the current temperature value;
A3. if so, unlocking a box door of the temperature and humidity test box;
A4. if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box;
A5. if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal is received so as to judge whether a person is in a dangerous area;
A6. and if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber.
In the method for safely controlling the temperature and humidity test chamber, the step A2 includes:
acquiring the current humidity value of the air in the temperature and humidity test box;
acquiring a first temperature threshold according to the current humidity value;
judging whether the current temperature value exceeds a first temperature threshold value or not;
if so, judging that the door opening condition is not met, and if not, judging that the door opening condition is met.
In the method for safely controlling the temperature and humidity test chamber, after the step A2, the method further comprises the following steps:
if the fault state information is not satisfied, starting the nitrogen dehumidifying device, inputting nitrogen into the temperature and humidity test chamber, and exhausting air in the temperature and humidity test chamber.
In the method for safely controlling the temperature and humidity test chamber, after the step A2, the method further comprises the following steps:
if the fault state information is not satisfied, the ultrasonic atomizer is started, and water vapor is input into the temperature and humidity test box.
Further, if unsatisfied and fault status information is fault information, then start nitrogen gas dehumidifying device, after the step of discharging the air in the temperature and humidity test incasement to the temperature and humidity test incasement input nitrogen gas, still include:
acquiring a first real-time temperature value in the temperature and humidity test chamber and a second real-time temperature value of the exhaust gas;
judging whether a first unlocking condition is met or not according to the first real-time temperature value and the second real-time temperature value;
and if so, unlocking the door of the temperature and humidity test chamber.
In the method for safely controlling the temperature and humidity test chamber, the method further comprises the following steps after the step A5:
if the person is in the dangerous area, warning information is sent out to prompt the person to leave the dangerous area.
In the temperature and humidity test box safety control method, in step A5, when a door opening trigger signal is received, unlocking password information is obtained first, whether the unlocking password information is correct or not is judged, and if the unlocking password information is correct, position information of a worker is obtained to judge whether a person is in a dangerous area or not.
In a second aspect, an embodiment of the present application provides a temperature and humidity test chamber safety control device, is applied to the temperature and humidity test chamber, includes:
the first acquisition module is used for acquiring the current temperature value of air in the temperature and humidity test box and the fault state information of the refrigerating system when the test is stopped; the fault state information is fault information or non-fault information;
the first judgment module is used for judging whether the door opening condition is met or not according to the current temperature value;
the first unlocking module is used for unlocking a box door of the temperature and humidity test box when door opening conditions are met;
the second unlocking module is used for starting the refrigerating system to cool when the door opening condition is not met and the fault state information is non-fault information, and unlocking the door of the temperature and humidity test box until the door opening condition is met;
the first execution module is used for acquiring the position information of a worker when receiving a door opening trigger signal under the condition that a door opening condition is not met and the fault state information is fault information so as to judge whether a person is in a dangerous area;
and the third unlocking module is used for unlocking the door of the temperature and humidity test box when no person is in the dangerous area.
In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory, where the memory stores a computer program, and the processor is configured to execute the steps of the safety control method for the temperature and humidity test chamber by calling the computer program stored in the memory.
In a fourth aspect, an embodiment of the present application provides a storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of safety control of the temperature and humidity test chamber.
Has the advantages that:
according to the temperature and humidity test box safety control method, the temperature and humidity test box safety control device, the electronic equipment and the storage medium, when a test is stopped, the current temperature value of air in the temperature and humidity test box and the fault state information of a refrigerating system are obtained; judging whether a door opening condition is met or not according to the current temperature value; if so, unlocking a box door of the temperature and humidity test box; if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box; if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal is received so as to judge whether a person is in a dangerous area; if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber; therefore, under the condition of the fault of the refrigeration system, the high-temperature air scalding is avoided while the fact that a worker can open the test box door in time is guaranteed.
Drawings
Fig. 1 is a flowchart of a method for safely controlling a temperature and humidity test chamber according to an embodiment of the present application.
Fig. 2 is a block diagram of a safety control device for a temperature and humidity test chamber according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
FIG. 4 is a schematic diagram of an exemplary temperature and humidity test chamber air extraction system.
Fig. 5 is a schematic view of a hazardous area.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, an embodiment of the present application provides a method for safely controlling a temperature and humidity test chamber, which is applied to the temperature and humidity test chamber, and includes the steps of:
A1. acquiring the current temperature value of air in a temperature and humidity test box and fault state information of a refrigerating system when a test is stopped; the fault state information is fault information or non-fault information;
A2. judging whether the door opening condition is met or not according to the current temperature value;
A3. if so, unlocking a box door of the temperature and humidity test box;
A4. if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box;
A5. if the situation is not met and the fault state information is fault information, when a door opening trigger signal is received, position information of a worker is obtained to judge whether a person is in a dangerous area;
A6. and if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber.
In the control method, when a test is stopped, if a refrigerating system is normal, the refrigerating system is firstly used for cooling until door opening conditions are met (personnel cannot be scalded if the door opening conditions are met), and locking is not released; if the refrigeration system is abnormal, when a worker needs to open the door in time, a door opening trigger signal is input (for example, a sensor is arranged on a door handle, so that the door opening trigger signal is generated when the worker pulls the door handle, or a sensor is arranged at a door opening key, so that the door opening trigger signal is generated when the worker presses the door opening key). Therefore, under the condition of the fault of the refrigeration system, the high-temperature air scalding is avoided while the fact that a worker can open the test box door in time is guaranteed.
In this embodiment, a position sensor (e.g., a radar) may be disposed on the temperature and humidity test chamber to obtain position information of the worker, where the position information includes distance information between the worker and the position sensor and/or azimuth angle information of the worker. For example, in fig. 5 (which is a plan view), a fan-shaped area right in front of the box body 1 is defined as a dangerous area 8, and if a worker is in the dangerous area 8, the worker is easily scalded by the hot air directly hitting the human body at a short distance when opening the door, and the worker is safe in all areas other than the dangerous area 8.
Taking the top view in fig. 5 as an example, the azimuth angles refer to: in this plan view, the angle a between the line connecting the position 10 of the worker and the position sensor 9 and the center axis of the housing 1 is shown. Therefore, when judging whether a person is in the dangerous area, if the absolute value of the azimuth angle of at least one person is not more than the preset angle threshold (namely, the semi-circle center angle of the fan-shaped dangerous area 8) and the distance between the absolute value and the position sensor is not more than the preset distance threshold (namely, the radius of the fan-shaped dangerous area 8), judging that the person is in the dangerous area 8, otherwise, judging that no person is in the dangerous area 8.
It should be understood by those skilled in the art that, in the above-mentioned safety area, the optimal area is the position of the side of the door 7 facing away from the dangerous area 8 when the door is opened, and because there is a shielding of the door 7, it is also possible to use "all workers are located in the optimal area" as the unlocking condition, and then step a5 is: if the fault state information is not satisfied and the fault state information is fault information, when a door opening trigger signal is received, position information of workers is obtained to judge whether all the workers (actually, 1 worker is generally in number) are located in the optimal area; step a6 is: and if all the workers are located in the optimal area, unlocking the door of the temperature and humidity test chamber.
In the step a1, a current temperature value is obtained through a temperature sensor arranged in the temperature and humidity test chamber. If a plurality of temperature sensors are arranged in the temperature and humidity test box, the average value of the values measured by all the temperature sensors can be used as the current temperature value, and the highest value of the values measured by all the temperature sensors can also be used as the current temperature value (the mode is relatively conservative, so that the safety is higher).
In some embodiments, step a2 includes:
A201. acquiring the current humidity value of the air in the temperature and humidity test box;
A202. acquiring a first temperature threshold according to the current humidity value;
A203. judging whether the current temperature value exceeds a first temperature threshold value;
A204. if so, judging that the door opening condition is not met, and if not, judging that the door opening condition is met.
The hot air can scald a human body, is related to temperature and humidity, under the same contact time condition, the higher the humidity of the air at the same temperature, the greater the heat contained, the more easily scald the human body, can be obtained by experiment or theoretical derivation according to a certain contact time (for example, 2s, but not limited thereto) as a condition, and form a lookup table, in step 202, a corresponding critical temperature value is obtained by querying in the lookup table according to the current humidity value, and then the critical temperature value can be used as a first temperature threshold value, and the difference between the critical temperature value and a preset safety value (for example, 5 ℃, but not limited thereto) can also be used as a first temperature threshold value (the method is more conservative, and the safety is higher).
The current humidity value is obtained through the humidity sensors arranged in the temperature and humidity test box, if the humidity sensors in the temperature and humidity test box are multiple, the average value of the measured values of all the humidity sensors can be used as the current humidity value, and the highest value of the measured values of all the humidity sensors can also be used as the current humidity value (the mode is relatively conservative, so that the safety is higher).
In fact, only the temperature may be considered in determining whether the door opening condition is satisfied, and thus in other embodiments, step a2 includes:
A205. judging whether the current temperature value exceeds a preset second temperature threshold value or not;
A206. if yes, the door opening condition is judged not to be met, and if not, the door opening condition is judged to be met.
Wherein, the setting standard of the second temperature threshold is as follows: given a certain contact time (for example, but not limited to, 2 s), if the air in the box is higher than the second temperature threshold, the human body will be burned no matter how low the humidity of the air is. Therefore, if the current temperature value is higher than the second temperature threshold, the door must be locked. For safety reasons, the second temperature threshold is generally set lower (experimentally or theoretically derivable) than the first temperature threshold.
In fact, some temperature and humidity test chambers are provided with a nitrogen dehumidifying device, as shown in fig. 4, the nitrogen dehumidifying device comprises an air outlet channel 2 arranged on one side of a chamber body 1 of the temperature and humidity test chamber and an air inlet channel 3 arranged on the other side of the chamber body 1, electromagnetic valves 4 are arranged on the air outlet channel 2 and the air inlet channel 3, and the air inlet channel 3 is connected with a liquid nitrogen bottle 5; when the humidity reduction control is carried out in the temperature and humidity test box, the electromagnetic valve 4 is opened, so that liquid nitrogen in the liquid nitrogen bottle 5 can be gasified into nitrogen (dry) and enters the box body 1, and original air in the box body 1 is extruded out from the air outlet channel 2. Thus, in some preferred embodiments, after step a2, the method further comprises the steps of:
A7. if the fault state information is not satisfied and the fault state information is fault information, the nitrogen dehumidifying device is started, and air in the temperature and humidity test box is exhausted while nitrogen is input into the temperature and humidity test box.
Therefore, before the door of the box is opened by the staff, the temperature is gradually reduced in a mode of discharging air in the temperature and humidity test box, and then when the door of the box is opened by the staff, the temperature can be reduced to some extent, the reduction amplitude is related to the time for the door of the box to be opened by the staff, and the safety can be further improved.
In fact, some temperature and humidity test chambers are provided with an ultrasonic atomizer 11 (see fig. 4) for humidification, so that in some embodiments, after the step a2, the method further includes the following steps:
A8. if the fault state information is not satisfied and the fault state information is fault information, the ultrasonic atomizer is started, and water vapor is input into the temperature and humidity test box.
Before the chamber door was opened to the staff, through to input steam in the temperature humidity test case, the heat in the air can be absorbed to steam to further reduce the temperature of air, can further improve the security.
If the nitrogen dehumidifying device and the ultrasonic atomizer work simultaneously, the temperature reducing speed is higher, and the safety is higher.
Furthermore, if the staff does not try to open the box door all the time, the nitrogen dehumidifying device and/or the ultrasonic atomizer can work all the time, so that in order to avoid wasting power and materials, the locking of the box door can be released when the temperature is reduced to meet the preset conditions, and the nitrogen dehumidifying device and/or the ultrasonic atomizer can stop working; in this case, after step a7, the method further includes:
A9. acquiring a first real-time temperature value in a temperature and humidity test chamber and a second real-time temperature value of exhaust gas;
A10. judging whether a first unlocking condition is met or not according to the first real-time temperature value and the second real-time temperature value;
A11. and if so, unlocking the door of the temperature and humidity test chamber.
The first real-time temperature value can be obtained through a temperature sensor in the temperature and humidity test box, and the second real-time temperature value can be obtained through a temperature sensor 6 (see fig. 4) arranged in the air outlet channel 2.
Wherein, in some embodiments, step a10 comprises: calculating the average value of the first real-time temperature value and the second real-time temperature value; judging whether the average value exceeds a preset third temperature threshold value; if so, judging that the first unlocking condition is not met; if not, the first unlocking condition is judged to be met.
In other embodiments, step a10 includes: calculating a weighted average of the first real-time temperature value and the second real-time temperature value; judging whether the weighted average value exceeds a preset third temperature threshold value or not; if so, judging that the first unlocking condition is not met; if not, the first unlocking condition is judged to be met. In this embodiment, a weight corresponding to the position of each temperature sensor is set, and the weighted average value includes temperature information of each position, so that the overall situation of the temperature in the box can be reflected relatively accurately.
In still other embodiments, step a10 includes: taking the highest one of the first real-time temperature value and the second real-time temperature value as an effective temperature value; judging whether the effective temperature value exceeds a preset third temperature threshold value or not; if so, judging that the first unlocking condition is not met; if not, the first unlocking condition is judged to be met. In this embodiment, the judgment is performed by using the highest temperature value, which is most conservative and has the highest safety.
In some preferred embodiments, step a5 is followed by the steps of:
A12. if the person is in the dangerous area, warning information is sent out to prompt the person to leave the dangerous area.
So that the staff can leave the dangerous area in time, and the unlocking can be carried out in time.
In some preferred embodiments, in step a5, when the door opening trigger signal is received, the unlocking password information is obtained, and it is determined whether the unlocking password information is correct, and if so, the position information of the staff is obtained to determine whether a person is in the dangerous area.
The method comprises the steps that when a door opening trigger signal is received, a face image is obtained firstly, whether the operator has unlocking qualification or not is judged according to the face image, if yes, the position information of the operator is obtained, whether the operator is in a dangerous area or not is judged, and the operator can be unlocked only after the verification is passed, so that accidents caused by the fact that unqualified personnel perform the operation are avoided.
According to the temperature and humidity test box safety control method, the current temperature value of the air in the temperature and humidity test box and the fault state information of the refrigerating system are obtained when the test is stopped; judging whether a door opening condition is met or not according to the current temperature value; if so, unlocking a box door of the temperature and humidity test box; if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box; if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal is received so as to judge whether a person is in a dangerous area; if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber; therefore, under the condition of the fault of the refrigeration system, the high-temperature air scalding is avoided while the fact that a worker can open the test box door in time is guaranteed.
Referring to fig. 2, an embodiment of the present application provides a safety control device for a temperature and humidity test chamber, which is applied to the temperature and humidity test chamber and includes a first obtaining module 1, a first determining module 2, a first unlocking module 3, a second unlocking module 4, a first executing module 5, and a third unlocking module 6;
the first acquisition module 1 is used for acquiring the current temperature value of air in the temperature and humidity test box and the fault state information of the refrigeration system when the test is stopped; the fault state information is fault information or non-fault information;
the first judging module 2 is used for judging whether the door opening condition is met according to the current temperature value;
the first unlocking module 3 is used for unlocking a box door of the temperature and humidity test box when door opening conditions are met;
the second unlocking module 4 is used for starting the refrigerating system to cool when the door opening condition is not met and the fault state information is non-fault information, and unlocking the door of the temperature and humidity test box until the door opening condition is met;
the first execution module 5 is configured to, when receiving a door opening trigger signal, acquire position information of a worker to determine whether a person is in a dangerous area under the condition that a door opening condition is not satisfied and fault state information is fault information;
and the third unlocking module 6 is used for unlocking the door of the temperature and humidity test chamber when no person is in the dangerous area.
In this embodiment, a position sensor (e.g., a radar) may be disposed on the temperature and humidity test chamber to obtain position information of the worker, where the position information includes distance information between the worker and the position sensor and/or azimuth angle information of the worker. For example, in fig. 5 (which is a plan view), a fan-shaped area right in front of the box body 1 is defined as a dangerous area 8, and if a worker is in the dangerous area 8, the worker is easily scalded by the hot air directly hitting the human body at a short distance when opening the door, and the worker is safe in all areas other than the dangerous area 8.
Taking the top view in fig. 5 as an example, the azimuth angles refer to: in this plan view, the angle a between the line connecting the position 10 of the worker and the position sensor 9 and the center axis of the housing 1 is shown. Therefore, when the first execution module 5 determines whether a person is in the dangerous area, if the absolute value of the azimuth angle of at least one person is not greater than the preset angle threshold (i.e., the semi-circle center angle of the fan-shaped dangerous area 8) and the distance between the absolute value and the position sensor is not greater than the preset distance threshold (i.e., the radius of the fan-shaped dangerous area 8), it is determined that a person is in the dangerous area 8, and otherwise, it is determined that no person is in the dangerous area 8.
It should be known to those skilled in the art that, in the above-mentioned safety area, the optimal area is a position on a side of the box door 7 facing away from the dangerous area 8 when the box door 7 is opened, and therefore, because of the shielding of the box door 7, "all the staff members are located in the optimal area" may also be used as an unlocking condition, at this time, the first execution module 5 is configured to, when receiving the door opening trigger signal and under the condition that the door opening condition is not satisfied and the fault state information is non-fault information, obtain the position information of the staff members to determine whether all the staff members (actually, the number of the staff members is generally 1) are located in the optimal area; and the third unlocking module 6 is used for unlocking the door of the temperature and humidity test chamber when all the workers are located in the optimal area.
The first obtaining module 1 obtains a current temperature value through a temperature sensor arranged in the temperature and humidity test box. If a plurality of temperature sensors are arranged in the temperature and humidity test box, the average value of the values measured by all the temperature sensors can be used as the current temperature value, and the highest value of the values measured by all the temperature sensors can also be used as the current temperature value (the mode is relatively conservative, so that the safety is higher).
In some embodiments, when the first determining module 2 determines whether the door opening condition is satisfied according to the current temperature value,
acquiring the current humidity value of the air in the temperature and humidity test box;
acquiring a first temperature threshold according to the current humidity value;
judging whether the current temperature value exceeds a first temperature threshold value;
if so, judging that the door opening condition is not met, and if not, judging that the door opening condition is met.
The hot air can scald a human body, is related to temperature and humidity, under the same contact time condition, the air at the same temperature has higher humidity, the contained heat is larger, the scald is more easily caused, the critical temperature value capable of causing the scald to the human body under different humidity conditions can be obtained according to experiment or theoretical derivation according to the condition of certain contact time (such as 2s, but not limited thereto) in advance, a query table is formed, the first judgment module 2 queries the query table according to the current humidity value to obtain the corresponding critical temperature value, the critical temperature value can be used as the first temperature threshold value, and the difference between the critical temperature value and a preset safety value (such as 5 ℃, but not limited thereto) can be used as the first temperature threshold value (the mode is more conservative, and the safety is higher).
The current humidity value is obtained through the humidity sensors of the setting unit in the temperature and humidity test box, if the humidity sensors in the temperature and humidity test box are multiple, the average value of the measured values of all the humidity sensors can be used as the current humidity value, and the highest value of the measured values of all the humidity sensors can also be used as the current humidity value (the mode is relatively conservative, so that the safety is higher).
In fact, only the temperature may be considered when determining whether the door opening condition is satisfied, so that in other embodiments, when the first determination module 2 determines whether the door opening condition is satisfied according to the current temperature value,
judging whether the current temperature value exceeds a preset second temperature threshold value or not;
if yes, the door opening condition is judged not to be met, and if not, the door opening condition is judged to be met.
Wherein, the setting standard of the second temperature threshold is as follows: given a certain contact time (for example, but not limited to, 2 s), if the air in the box is higher than the second temperature threshold, the human body will be burned no matter how low the humidity of the air is. Therefore, if the current temperature value is higher than the second temperature threshold, the door must be locked. For safety reasons, the second temperature threshold is generally set lower (experimentally or theoretically derivable) than the first temperature threshold.
In fact, some temperature and humidity test chambers are provided with a nitrogen dehumidifying device, as shown in fig. 4, the nitrogen dehumidifying device comprises an air outlet channel 2 arranged on one side of a chamber body 1 of the temperature and humidity test chamber and an air inlet channel 3 arranged on the other side of the chamber body 1, electromagnetic valves 4 are arranged on the air outlet channel 2 and the air inlet channel 3, and the air inlet channel 3 is connected with a liquid nitrogen bottle 5; when the humidity reduction control is carried out in the temperature and humidity test box, the electromagnetic valve 4 is opened, so that liquid nitrogen in the liquid nitrogen bottle 5 can be gasified into nitrogen (dry) and enters the box body 1, and original air in the box body 1 is extruded out from the air outlet channel 2. Therefore, in some preferred embodiments, the safety control device for the temperature and humidity test chamber further comprises a first temperature reduction module;
the first cooling module is used for starting the nitrogen dehumidifying device under the condition that door opening conditions are not met and fault state information is fault information, and exhausting air in the temperature and humidity test box while inputting nitrogen into the temperature and humidity test box.
Therefore, before the door of the box is opened by the staff, the temperature is gradually reduced in a mode of discharging air in the temperature and humidity test box, and then when the door of the box is opened by the staff, the temperature can be reduced to some extent, the reduction amplitude is related to the time for the door of the box to be opened by the staff, and the safety can be further improved.
In fact, some temperature and humidity test chambers are provided with an ultrasonic atomizer for humidification, so that in some embodiments, the temperature and humidity test chamber safety control device further comprises a second temperature reduction module;
and the second cooling module is used for starting the ultrasonic atomizer and inputting water vapor into the temperature and humidity test box under the conditions that the door opening condition is not met and the fault state information is fault information.
Before the chamber door was opened to the staff, through to input steam in the temperature humidity test case, the heat in the air can be absorbed to steam to further reduce the temperature of air, can further improve the security.
Furthermore, if the staff does not try to open the box door all the time, the nitrogen dehumidifying device and/or the ultrasonic atomizer can work all the time, so that in order to avoid wasting power and materials, the locking of the box door can be released when the temperature is reduced to meet the preset conditions, and the nitrogen dehumidifying device and/or the ultrasonic atomizer can stop working; at the moment, the safety control device of the temperature and humidity test box further comprises a second acquisition module, a second judgment module and a fourth unlocking module;
the second acquisition module is used for acquiring a first real-time temperature value in the temperature and humidity test box and a second real-time temperature value of the exhaust gas;
the second judgment module is used for judging whether the first unlocking condition is met or not according to the first real-time temperature value and the second real-time temperature value;
and the fourth unlocking module is used for unlocking the door of the temperature and humidity test chamber when the first unlocking condition is met.
The first real-time temperature value can be obtained through a temperature sensor in the temperature and humidity test box, and the second real-time temperature value can be obtained through a temperature sensor 6 (see fig. 4) arranged in the air outlet channel 2.
In some embodiments, the second judging module calculates an average value of the first real-time temperature value and the second real-time temperature value when judging whether the first unlocking condition is met; judging whether the average value exceeds a preset third temperature threshold value; if so, judging that the first unlocking condition is not met; if not, the first unlocking condition is judged to be met.
In other embodiments, the second determining module calculates a weighted average of the first real-time temperature value and the second real-time temperature value when determining whether the first unlocking condition is satisfied; judging whether the weighted average value exceeds a preset third temperature threshold value or not; if so, judging that the first unlocking condition is not met; if not, the first unlocking condition is judged to be met. In this embodiment, a weight corresponding to the position of each temperature sensor is set, and the weighted average value includes temperature information of each position, so that the overall situation of the temperature in the box can be reflected relatively accurately.
In some further embodiments, when the second determining module determines whether the first unlocking condition is satisfied, the highest one of the first real-time temperature value and the second real-time temperature value is taken as the effective temperature value; judging whether the effective temperature value exceeds a preset third temperature threshold value or not; if so, judging that the first unlocking condition is not met; if not, the first unlocking condition is judged to be met. In this embodiment, the judgment is performed by using the highest temperature value, which is most conservative and has the highest safety.
In some preferred embodiments, the temperature and humidity test chamber safety control device further comprises a warning module;
the warning module is used for sending warning information when a person is in a dangerous area so as to prompt the person to leave the dangerous area.
So that the staff can leave the dangerous area in time, and the unlocking can be carried out in time.
In some preferred embodiments, when receiving the door opening trigger signal, the first execution module 5 first obtains the unlocking password information, and determines whether the unlocking password information is correct, and if so, then obtains the position information of the worker, so as to determine whether a person is in a dangerous area.
The method comprises the steps that when a door opening trigger signal is received, a face image is obtained firstly, whether the operator has unlocking qualification or not is judged according to the face image, if yes, the position information of the operator is obtained, whether the operator is in a dangerous area or not is judged, and the operator can be unlocked only after the verification is passed, so that accidents caused by the fact that unqualified personnel perform the operation are avoided.
According to the temperature and humidity test box safety control device, the current temperature value of air in the temperature and humidity test box and the fault state information of the refrigerating system are obtained when the test is stopped; judging whether a door opening condition is met or not according to the current temperature value; if so, unlocking a box door of the temperature and humidity test box; if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box; if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal is received so as to judge whether a person is in a dangerous area; if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber; therefore, under the condition of the fault of the refrigeration system, the high-temperature air scalding is avoided while the fact that a worker can open the test box door in time is guaranteed.
Referring to fig. 3, an electronic device 100 according to an embodiment of the present application further includes a processor 101 and a memory 102, where the memory 102 stores a computer program, and the processor 101 is configured to execute the steps of the safety control method for the temperature and humidity test chamber by calling the computer program stored in the memory 102.
The processor 101 is electrically connected to the memory 102. The processor 101 is a control center of the electronic device 100, connects various parts of the entire electronic device using various interfaces and lines, and performs various functions of the electronic device and processes data by running or calling a computer program stored in the memory 102 and calling data stored in the memory 102, thereby performing overall monitoring of the electronic device.
The memory 102 may be used to store computer programs and data. The memory 102 stores computer programs containing instructions executable in the processor. The computer program may constitute various functional modules. The processor 101 executes various functional applications and data processing by calling a computer program stored in the memory 102.
In this embodiment, the processor 101 in the electronic device 100 loads instructions corresponding to one or more processes of the computer program into the memory 102, and the processor 101 runs the computer program stored in the memory 102 according to the following steps, so as to implement various functions: acquiring the current temperature value of air in a temperature and humidity test box and fault state information of a refrigerating system when a test is stopped; judging whether a door opening condition is met or not according to the current temperature value; if so, unlocking a box door of the temperature and humidity test box; if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box; if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal is received so as to judge whether a person is in a dangerous area; and if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber.
According to the above, the electronic equipment acquires the current temperature value of the air in the temperature and humidity test box and the fault state information of the refrigeration system when the test is stopped; judging whether a door opening condition is met or not according to the current temperature value; if so, unlocking a box door of the temperature and humidity test box; if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box; if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal is received so as to judge whether a person is in a dangerous area; if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber; therefore, under the condition of the fault of the refrigeration system, the high-temperature air scalding is avoided while the fact that a worker can open the test box door in time is guaranteed.
The embodiment of the application also provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the temperature and humidity test box safety control method are executed, so that the following functions are realized: acquiring the current temperature value of air in a temperature and humidity test box and fault state information of a refrigerating system when a test is stopped; judging whether a door opening condition is met or not according to the current temperature value; if so, unlocking a box door of the temperature and humidity test box; if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box; if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal is received so as to judge whether a person is in a dangerous area; and if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber.
The storage medium may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), a Programmable Read-Only Memory (PROM), a Read-Only Memory (ROM), a magnetic Memory, a flash Memory, a magnetic disk, or an optical disk.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, which are substantially the same as the present invention.
Claims (8)
1. A safety control method of a temperature and humidity test chamber is applied to the temperature and humidity test chamber and is characterized by comprising the following steps:
A1. acquiring the current temperature value of air in a temperature and humidity test box and fault state information of a refrigerating system when a test is stopped; the fault state information is fault information or non-fault information;
A2. judging whether a door opening condition is met or not according to the current temperature value;
A3. if so, unlocking a box door of the temperature and humidity test box;
A4. if the door opening condition is not met and the fault state information is non-fault information, starting a refrigerating system for cooling until the door opening condition is met, and unlocking a door of the temperature and humidity test box;
A5. if the fault state information is not satisfied and the fault state information is fault information, acquiring position information of a worker when a door opening trigger signal input by the worker is received so as to judge whether the worker is in a dangerous area;
A6. if no person is in the dangerous area, unlocking the door of the temperature and humidity test chamber;
after the step a2, the method further includes the steps of:
if the fault state information is not satisfied and the fault state information is fault information, starting a nitrogen dehumidifying device, inputting nitrogen into a temperature and humidity test chamber, and simultaneously exhausting air in the temperature and humidity test chamber;
if the fault state information is not satisfied, the ultrasonic atomizer is started, and water vapor is input into the temperature and humidity test box.
2. The temperature and humidity test chamber safety control method according to claim 1, wherein step A2 includes:
acquiring the current humidity value of the air in the temperature and humidity test box;
acquiring a first temperature threshold according to the current humidity value;
judging whether the current temperature value exceeds a first temperature threshold value or not;
if so, judging that the door opening condition is not met, and if not, judging that the door opening condition is met.
3. The safety control method for the temperature and humidity test chamber according to claim 1, wherein if the safety control method is not satisfied and the fault state information is fault information, the nitrogen dehumidifying device is started, and after the step of inputting nitrogen into the temperature and humidity test chamber and exhausting air in the temperature and humidity test chamber, the safety control method further comprises:
acquiring a first real-time temperature value in the temperature and humidity test chamber and a second real-time temperature value of the exhaust gas;
judging whether a first unlocking condition is met or not according to the first real-time temperature value and the second real-time temperature value;
and if so, unlocking the door of the temperature and humidity test chamber.
4. The temperature and humidity test chamber safety control method according to claim 1, further comprising, after the step A5, the steps of:
if the person is in the dangerous area, warning information is sent out to prompt the person to leave the dangerous area.
5. The temperature and humidity test chamber safety control method according to claim 1, wherein in step A5, when a door opening trigger signal is received, unlocking password information is obtained first, whether the unlocking password information is correct or not is judged, and if the unlocking password information is correct, position information of a worker is obtained to judge whether a person is in a dangerous area or not.
6. The utility model provides a temperature and humidity test case safety control device, is applied to temperature and humidity test case, its characterized in that includes:
the first acquisition module is used for acquiring the current temperature value of air in the temperature and humidity test box and the fault state information of the refrigerating system when the test is stopped; the fault state information is fault information or non-fault information;
the first judgment module is used for judging whether the door opening condition is met or not according to the current temperature value;
the first unlocking module is used for unlocking a box door of the temperature and humidity test box when door opening conditions are met;
the second unlocking module is used for starting the refrigerating system to cool when the door opening condition is not met and the fault state information is non-fault information, and unlocking the door of the temperature and humidity test box until the door opening condition is met;
the first execution module is used for acquiring the position information of a worker when receiving a door opening trigger signal input by the worker under the condition that the door opening condition is not met and the fault state information is fault information so as to judge whether the worker is in a dangerous area;
the third unlocking module is used for unlocking the door of the temperature and humidity test box when no person is in the dangerous area;
the temperature and humidity test box safety control device further comprises:
the first cooling module is used for starting the nitrogen dehumidifying device under the conditions that the door opening condition is not met and the fault state information is fault information, inputting nitrogen into the temperature and humidity test box and simultaneously exhausting air in the temperature and humidity test box;
and the second cooling module is used for starting the ultrasonic atomizer and inputting water vapor into the temperature and humidity test box under the conditions that the door opening condition is not met and the fault state information is fault information.
7. An electronic device, comprising a processor and a memory, wherein the memory stores a computer program, and the processor is used for executing the steps of the safety control method for the temperature and humidity test chamber according to any one of claims 1 to 5 by calling the computer program stored in the memory.
8. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the steps of the safety control of the temperature and humidity test chamber according to any one of claims 1 to 5.
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| CN115961846B (en) * | 2022-01-05 | 2023-10-27 | 江苏拓米洛高端装备股份有限公司 | Environmental test box door lock system and environmental test box door lock control method |
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Denomination of invention: Safety control methods, devices, electronic devices, and storage media for temperature and humidity test chambers Effective date of registration: 20230420 Granted publication date: 20211102 Pledgee: Bank of China Limited Guangzhou Development Zone Branch Pledgor: Guangzhou Youyi Technology Co.,Ltd. Registration number: Y2023980038627 |
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