CN109946546A - A kind of photoelectric coupler aging test system and overheating protection method - Google Patents

Abstract

The present invention relates to the degradation systems and method for excessive heating protection of a kind of photoelectrical coupler.It mainly include control module, ageing oven, temperature sensor and data transmission module.The temperature sensor is arranged in ageing oven and is connected with the control module, and the temperature sensor is used to obtain the temperature data that region is specified in ageing oven, and the temperature data is sent to the control module；The data transmission module is connected with the control module, and when heating rate is abnormal, control module sends warning message to remote terminal by data transmission module.When in use, when the temperature of system some regions is abnormal, relevant warning message can issue remote terminal to above system, and operator on duty can know relevant information by remote terminal, and then the generation for the fire that can take measures to avoid.

Description

A kind of photoelectric coupler aging test system and overheating protection method

technical field

The invention belongs to the technical field of photoelectric device testing, and in particular relates to an aging test system and an overheating protection method for a photoelectric coupler.

Background technique

An optocoupler (referred to as optocoupler) is an electronic component that transmits electrical signals using light as a medium. Photocouplers are widely used in various industries because of their good electrical insulation and anti-interference capabilities.

Optocouplers are rarely used alone, and are mostly integrated inside the circuit board to achieve optoelectronic isolation, which is not easy to observe directly, and the working state is in the switching state, so the degree of aging is difficult to find. Once aging failure occurs, the entire circuit board will lose its proper function, resulting in serious consequences. Therefore, it is of great significance to study the aging and lifespan of optocouplers and specify a reasonable preventive replacement cycle for preventing failures caused by optocoupler aging failures.

At present, Chinese patent ZL201410126570.5 discloses a photoelectric coupler aging test system and method, Chinese patent ZL201420151197.4 discloses a photoelectric coupler aging test system, Chinese patent ZL201420151696.3 discloses a photoelectric Test setup for couplers. The above three patents solve several problems of the optocoupler's aging test device, life test system and life evaluation method, but in actual use, due to the realization of unattended, the on-duty personnel are not near the device, so they cannot immediately know each Information such as the current state of the sample, whether there is an abnormality in the test system, and whether the test has reached the cut-off condition. What's more serious is that once the temperature of the device is abnormal, the on-duty personnel cannot obtain relevant information in the first time, which may easily cause a fire.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide an aging test system for optocouplers in view of the problem that traditional aging devices are prone to fire.

An aging test system for an optocoupler, comprising a control module and an aging box, and the aging test system further includes:

a temperature sensor, the temperature sensor is arranged in the aging box and is connected with the control module, and the temperature sensor is used for acquiring temperature data of a designated area in the aging box, and sending the temperature data to the control module;

a data transmission module, the data transmission module is connected with the control module;

a cooling device, the cooling device is arranged on the aging box, and the cooling device is connected with the control module;

The control module includes a heating rate calculation unit, a comparison unit and an instruction processing unit, the heating rate calculation unit is used to calculate the heating rate according to the temperature data, the comparison unit is used to compare the temperature data with the threshold temperature, and is used to compare the temperature. The heating rate is compared with the threshold rate,

When the heating speed is greater than or equal to the first threshold speed and the temperature data is less than the threshold temperature, the command processing unit of the control module sends alarm information to the remote terminal through the data transmission module, and turns on the cooling device.

When the above system is in use, when the temperature in some areas of the system is abnormal, the relevant alarm information can be sent to the remote terminal, and the duty personnel can obtain the relevant information through the remote terminal, and then can take measures to avoid the occurrence of fire.

In one embodiment, the aging test system further includes a human-computer interaction module, which is connected to the control module for interacting with the control module.

In one embodiment, when the temperature data is greater than or equal to a threshold temperature, the instruction processing unit sends a power-off instruction to the power supply, or, when the temperature data is greater than or equal to a threshold temperature, continue to judge whether the heating rate is greater than or equal to is equal to the second threshold speed, and only when the heating speed is greater than or equal to the second threshold speed, the instruction processing unit sends a power-off instruction to the power supply.

In one embodiment, the aging test system further includes an alarm module, the alarm module is connected to the control module, when the temperature data is greater than or equal to a threshold temperature, or, when the temperature data is greater than or equal to a threshold temperature When the heating speed is greater than or equal to the second threshold speed, the second threshold speed is greater than the first threshold speed, the instruction processing unit sends a trigger instruction to the alarm module, and the alarm module starts the alarm mode after receiving the trigger instruction.

In one embodiment, the control module receives the power control instruction sent by the remote terminal through the data transmission module, and controls the power supply on and off according to the power control instruction.

In one embodiment, the control module sends the test data and test status of each sample in the aging box to the remote terminal through the data transmission module.

In one embodiment, when the sample reaches the test cut-off condition, the control module sends the test completion information to the remote terminal through the data transmission module.

An aging test overheating protection method for an optocoupler, comprising:

Obtain the temperature data of the designated area in the aging box in real time. When the heating rate is greater than or equal to the first threshold speed and the temperature data is less than the threshold temperature, an alarm message is sent to the remote terminal, and the temperature in the aging box is controlled by the cooling device.

In one embodiment, when the temperature data is greater than or equal to a threshold temperature, the instruction processing unit sends a power-off instruction to the power supply, or, when the temperature data is greater than or equal to a threshold temperature, continue to judge whether the heating rate is greater than or equal to is equal to the second threshold speed, and only when the heating speed is greater than or equal to the second threshold speed, the instruction processing unit sends a power-off instruction to the power supply.

In one of the embodiments, the test data and test status of the samples in the aging box are sent to the remote terminal, and the power supply is controlled on and off according to the instructions of the remote terminal.

Description of drawings

FIG. 1 is a schematic diagram of an aging test system for an optocoupler according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a control module according to an embodiment of the present invention.

FIG. 3 is a flowchart of an overheat protection method according to an embodiment of the present invention.

in:

110, control module 111, heating rate calculation unit 112, comparison unit

113. Instruction processing unit 120, aging box 130, temperature sensor

140, data transmission module 150, remote terminal 160, human-computer interaction module

170, alarm module 180, power supply 190, cooling device

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in FIG. 1 and FIG. 2 , an embodiment of the present invention provides an aging test system for an optocoupler, including a control module 110 and an aging box 120, the aging test system further includes: a temperature sensor 130, the temperature The sensor 130 is disposed in the aging box 120 and connected to the control module 110 . The temperature sensor 130 is used to acquire temperature data of a designated area in the aging box 120 and send the temperature data to the control module 110 . The data transmission module 140 is connected with the control module 110 . A cooling device 190 , the cooling device 190 is disposed on the aging box 120 , and the cooling device 190 is connected to the control module 110 . The control module 110 includes a heating rate calculation unit 111 , a comparison unit 112 and an instruction processing unit 113 , and the heating rate calculation unit 111 is configured to calculate the heating rate according to the temperature data. The heating rate can be calculated using existing algorithms. For example, the temperature increase rate can be calculated from the temperature difference per unit time. The comparison unit 112 is used for comparing the temperature data with the threshold temperature, and for comparing the heating speed with the threshold speed, when the heating speed is greater than or equal to the first threshold speed and the temperature data is less than the threshold temperature, the instruction processing of the control module 110 The unit 113 sends alarm information to the remote terminal 150 through the data transmission module 140, and turns on the cooling device 190.

When the above system is in use, the control module 110 obtains the temperature data of the designated area in real time through the temperature sensor 130, and compares the obtained temperature data with the threshold temperature. When the temperature of some areas in the aging box 120 of the system is abnormal, The control module 110 sends the alarm information to the remote terminal 150 through the data transmission module 140, and the on-duty personnel can obtain the relevant information through the remote terminal 150, and then can take measures to avoid the occurrence of fire.

The above system does not simply judge whether to alarm or not based on the threshold temperature. Instead, two conditions, the threshold temperature and the heating rate, are comprehensively considered. Because when the temperature is lower than the threshold temperature, if the heating rate of some areas is abnormal, the temperature data detected by the temperature sensor 130 may not exceed the threshold temperature, but at this time, the area is already in a relatively dangerous state. If no measures are taken, or close observation is made, it may cause a fire. At this time, the alarm information needs to be sent to the remote terminal 150 to attract the attention of the relevant personnel.

The above designated area refers to the area near the photocoupler sample. That is, the temperature sensor 130 is installed near the optocoupler sample to monitor the temperature of this area. The number of temperature sensors 130 can be determined according to the number of samples and the distribution area.

The above-mentioned cooling device 190 may be a ventilation device, such as a fan or the like. Other types of cooling devices are also possible. It can have a cooling effect.

The above-mentioned remote terminal 150 may be various types of terminal devices such as a mobile phone, a tablet computer, and a desktop computer. The remote terminal 150 is used to acquire and display the information sent by the data transmission module 140 . Further, the control instruction may also be sent to the control module 110 through the data transmission module 140 .

The above-mentioned data transmission module 140 may be a wired data transmission module or a wireless data transmission module. For example, WIFI module, GSM module, etc.

The above threshold temperature can be selected according to the actual situation, for example, the threshold temperature can be set to 75°C. It can be understood that the threshold temperature can also be set to other temperatures.

The form of the above-mentioned alarm information may take the form of information in the prior art. For example, when the remote terminal 150 is a mobile phone, the alarm information can be sent to the mobile phone in the form of a short message.

In this embodiment, the aging test system further includes a human-computer interaction module 160 , and the human-computer interaction module 160 is connected to the control module 110 for interacting with the control module 110 . For example, the above-mentioned threshold temperature and the like can be set through the human interaction module. Further, the above-mentioned human-computer interaction module 160 may have an operation interface, through which the above-mentioned aging test system can be controlled, and data can also be exchanged in the form of charts and the like.

In this embodiment, when the temperature data is greater than or equal to the threshold temperature, the instruction processing unit 113 sends a power-off instruction to the power supply 180 . Or, when the temperature data is greater than or equal to the threshold temperature, continue to judge whether the heating speed is greater than or equal to the second threshold speed, and only when the heating speed is greater than or equal to the second threshold speed, the instruction processing unit 113 sends a power outage to the power supply 180 instruction. In this way, when the power supply 180 receives the power-off signal, it can power off by itself. This avoids the occurrence of fire. The above-mentioned threshold temperature, second threshold speed and first threshold speed can be set according to actual conditions.

Further, in the above setting, when the temperature data is greater than or equal to the threshold temperature, continue to judge whether the heating speed is greater than or equal to the second threshold speed, and only when the heating speed is greater than or equal to the second threshold speed, the instruction processing unit 113 The power supply 180 sends a power-off command. This setting can avoid power-off operation without power-off in some cases. For example, when the threshold temperature is set unreasonably, for example, it is relatively low, even if the temperature data is greater than the threshold temperature, it is possible that when the cooling device is activated, dangerous situations such as fire will not occur. At this time, it is necessary to judge whether the cooling device can control the temperature after the temperature data is greater than the threshold temperature, so that it does not rise rapidly, or rises steadily after a period of time. If the above effect can be achieved, there is no need to cut off the power supply, which can ensure that the experiment can continue, and at the same time, it can also ensure that no dangerous situations such as fire will occur.

The following examples illustrate the above two situations.

For example, the heating rate and the current temperature should be considered comprehensively. When the measured temperature does not exceed the threshold temperature, if the heating rate is greater than 10 degrees per second, it is necessary to warn and ventilate, indicating that the temperature rises too fast, and send information to the staff in real time. Monitor the current temperature and cut off the power immediately once the temperature exceeds the threshold temperature.

For example, when the measured temperature exceeds the threshold temperature, it can be judged whether the power is required to be powered off by judging whether the temperature rise rate is greater than the second threshold rate. For example, when the temperature rise rate is less than 5 degrees per second, it means that there is no fire Turn on the ventilation device to cool down and monitor the heating rate in real time. When the ventilation cannot control the heating rate, that is, when the heating rate is greater than or equal to 5 degrees per second, the power supply should be cut off immediately.

Further, on the basis of the above, a camera device can also be provided, the camera device is used for photographing the situation in the aging box, and the camera device can be connected with the control module. When the temperature is abnormal or the heating rate is abnormal, the camera device can be turned on to capture a photo of the abnormal area, and the photo can be sent to the remote terminal.

In this embodiment, the aging test system further includes an alarm module 170. The alarm module 170 is connected to the control module 110. When the temperature data is greater than or equal to a threshold temperature, or when the temperature data is greater than or equal to a threshold temperature When the temperature is higher than or equal to the second threshold speed, the second threshold speed is greater than the first threshold speed, the instruction processing unit 113 sends a trigger instruction to the alarm module 170, and the alarm module 170 starts the alarm mode after receiving the trigger instruction. . The above-mentioned alarm module 170 may be an acousto-optic alarm module 170 or the like. The alarming by the alarming module 170 can attract the attention of the relevant personnel. In this way, on the one hand, the remote terminal 150 of the person on duty can receive the alarm information, and on the other hand, there are auxiliary measures such as sound and light alarm to attract the attention of the relevant personnel. The dual measures are used together to effectively improve the safety of the aging test system.

In this embodiment, the control module 110 receives the power control instruction sent by the remote terminal 150 through the data transmission module 140, and controls the power supply 180 on and off according to the control instruction. This setting can give the duty personnel the right to choose. It can be determined whether the power supply needs to be turned off according to the relevant alarm information. If the power supply needs to be turned off, the remote terminal 150 can send a control command to turn off the power supply. After the power is turned off, the power can also be turned on again by sending an instruction through the remote terminal 150 . It can be understood that when the remote terminal 150 is a mobile phone, the sending of the control instruction can be realized by means of a short message on the mobile phone or an APP on the mobile phone. Specifically, a short message with corresponding content can be sent to the remote terminal 150 according to a pre-written program instruction and according to the test situation, that is, the short message content has an interactive function. At the same time, the on-duty personnel can reply according to the content of the short message, and the control module 110 can execute corresponding instructions according to the content of the reply and the current state of the test system. So as to correctly realize the action of remote power on and off.

In this embodiment, the control module 110 sends the test data and test status of each sample in the aging box 120 to the remote terminal 150 through the data transmission module 140 . The test status means that the sample is in the test, or the test is completed and the test is exited. The test data and test status can be sent to the remote terminal 150 in various forms. For example, it can be sent to the mobile phone of the person on duty by means of a text message. Further, the test data and test status can also be sent to the remote terminal 150 of the on-duty personnel in the form of graphs and the like.

In this embodiment, when the sample reaches the test cut-off condition, the control module 110 sends the test completion information to the remote terminal 150 through the data transmission module 140 . This setting enables the on-duty personnel to know which samples have been tested for the first time. So that the staff on duty can take the next action at the first time.

It can be understood that the above information can also be sent to the remote terminal 150 in various ways. For example, it can be sent by SMS. It can also be sent via charts, etc.

As shown in FIG. 3 , an embodiment of the present invention also provides an aging test overheating protection method for an optocoupler, including:

S100, obtaining temperature data of a designated area in the aging box 120 in real time;

S200 , when the heating speed is greater than or equal to the first threshold speed and the temperature data is less than the threshold temperature, send an alarm message to the remote terminal, and control the temperature in the aging box 120 through the cooling device 190 .

Further, as shown in FIG. 3, step S210: when the temperature data is greater than or equal to the threshold temperature, the instruction processing unit 113 sends a power-off instruction to the power supply 180, or, when the temperature data is greater than or equal to the threshold temperature At this time, continue to judge whether the heating rate is greater than or equal to the second threshold rate, and the instruction processing unit 113 sends a power-off instruction to the power supply 180 only when the heating rate is greater than or equal to the second threshold rate.

Further, on the basis of the above, step S300 may also be included: sending the test data and test status of the sample in the aging box 120 to the remote terminal 150, and when the sample reaches the test cut-off condition, sending the sample completion information to the remote terminal 150. It can be understood that the above-mentioned control module 110 can acquire the test data of the samples in the aging box 120 in real time, and then can send the test data to the remote terminal 150 through the data transmission module 140 . At the same time, the above-mentioned test data can also be displayed on the above-mentioned human-computer interaction module 160 .

It can be understood that the method for using the above-mentioned system in the embodiment of the present invention is not limited to the above-mentioned several manners.

The system and method of the present invention can realize the control of the optocoupler aging test system through a human-computer interaction mode, and can also perform data exchange in the form of charts and the like. The operating temperature of the designated area of the optocoupler aging test system can be collected in real time, and the system power supply 180 can be automatically cut off when it is found that the operating temperature exceeds a threshold value, and an alarm signal can be issued. The test information collected in real time can be sent to the remote terminal 150 far away from the test area by means of remote information transmission. And can send short messages to the mobile phone of the personnel on duty through the mobile phone short message interaction module, so that the personnel on duty can know the test information at the first time. When the test system needs to be powered on and off, the personnel on duty can send corresponding control instructions to the control module 110 through the remote terminal 150 . The system and method of the present invention effectively improve the safety of the aging test system. It also greatly facilitates the remote control of the system by the on-duty personnel.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. a kind of degradation system of photoelectrical coupler, including control module and ageing oven, which is characterized in that the aging examination Check system further include:

Temperature sensor, the temperature sensor are arranged in ageing oven and are connected with the control module, the temperature sensing Device is used to obtain the temperature data that region is specified in ageing oven, and the temperature data is sent to the control module；

Data transmission module, the data transmission module are connected with the control module；

Cooling device, the cooling device are arranged on ageing oven, and the cooling device is connected with the control module；

The control module includes heating rate computing unit, comparing unit and instruction process unit, the heating rate meter It calculates unit to be used to calculate heating rate according to temperature data, the comparing unit is for comparing temperature data and threshold temperature Compared with, and be compared for will heat up speed with threshold velocity,

When heating rate is more than or equal to first threshold speed and temperature data is less than threshold temperature, the instruction processing of control module Unit sends warning message to remote terminal by data transmission module, and cooling device is opened.

2. the degradation system of photoelectrical coupler according to claim 1, which is characterized in that the degradation system It further include human-computer interaction module, the human-computer interaction module is connected with the control module, for carrying out with the control module Interaction.

3. the degradation system of photoelectrical coupler according to claim 1, which is characterized in that when the temperature data is big When being equal to threshold temperature, described instruction processing unit sends cut-offing instruction to power supply, alternatively, when the temperature data is big When being equal to threshold temperature, continue judge whether heating rate is more than or equal to second threshold speed, only heating rate greater than etc. When second threshold speed, described instruction processing unit just sends cut-offing instruction to power supply.

4. the degradation system of photoelectrical coupler according to claim 1, which is characterized in that the degradation system It further include alarm module, the alarm module is connected with the control module, when the temperature data is more than or equal to threshold temperature When, alternatively, when the temperature data be more than or equal to threshold temperature when, and heating rate be more than or equal to second threshold speed when, institute Second threshold speed is stated greater than first threshold speed, described instruction processing unit sends triggering command to alarm module, mould of alarming Block starts alarm mode after receiving triggering command.

5. the degradation system of photoelectrical coupler according to claim 1, which is characterized in that the control module passes through Data transmission module receives the power supply control instruction that remote terminal is sent, and controls power supply according to the power supply control instruction On-off.

6. the degradation system of photoelectrical coupler according to claim 1, which is characterized in that the control module passes through Data transmission module sends the test data and trystate of each sample in ageing oven to remote terminal.

7. the degradation system of photoelectrical coupler according to claim 6, which is characterized in that cut when sample reaches test Only when condition, the control module sends test to remote terminal by data transmission module and completes information.

8. a kind of degradation method for excessive heating protection of photoelectrical coupler, characterized by comprising:

The temperature data that region is specified in ageing oven is obtained in real time, when heating rate is more than or equal to first threshold speed and temperature number When according to being less than threshold temperature, warning message is sent to remote terminal, and aging the temperature inside the box is controlled by cooling device.

9. the degradation method for excessive heating protection of photoelectrical coupler according to claim 8, which is characterized in that

When the temperature data is more than or equal to threshold temperature, described instruction processing unit sends cut-offing instruction to power supply, Alternatively, continuing to judge whether heating rate is more than or equal to second threshold speed when the temperature data is more than or equal to threshold temperature When degree, only heating rate are more than or equal to second threshold speed, described instruction processing unit just sends power-off to power supply and refers to It enables.

10. the degradation method for excessive heating protection of photoelectrical coupler according to claim 8, which is characterized in that Xiang Yuancheng Terminal sends the test data and trystate of sample in ageing oven, according to the logical of the instruction control power supply of remote terminal It is disconnected.