Tang Yue dragged out the emergency oxygen system.

Unlike the OGS cabinet, which uses molecular sieves and water electrolysis to produce oxygen, the emergency oxygen generation system uses a non-renewable chemical oxygen source to produce oxygen through catalytic decomposition of solid chlorate - this system is very old and simple, but it is very reliable, and there is no complex mechanical and circuit structure, which means that it is almost impossible to fail.

This system has been kept in the first-aid kit as a backup in case of emergency, in case of problems with the OGS, then the crew in the station can rely on it to provide oxygen, the emergency oxygen production system produces enough oxygen for six people to breathe for 12 hours, and can also replenish oxygen for the life support system of Mingguang armor, which is enough to support the scientific expedition team members to evacuate Kunlun Station in time under normal circumstances.

However, the OGS of Kunlun Station has always been reliable, and it has been used for so many years, and there has been no major problem, so the spare parts have been sealed and have never been put into use for so many years.

The emergency oxygen production system has a high degree of integration, usually packed in a box, and taken out separately is just a 60 centimeter long, adult arm thickness cuboid, weighing about 15 kilograms, white plastic shell, integrated inside a mixed column of alkali metal chlorate, as well as electronic ignition and gas filtration and compression device, as long as the switch is turned on, the internal column will begin to react under the action of the catalyst and release oxygen.

There's even a strap on it, so you can wear it on your back if you wish.

A cuboid oxygen generation unit can produce a total of 2,500 liters of oxygen, and there are six such units in Kunlun Station.

The old cat turned off the OGS system, and the green indicator light on the cabinet slowly went out.

The computer detects that the OGS cabinet is closed and starts to alarm.

"Shut up." The old cat said coldly.

The computer shut up.

Tang Yue put on a breathing mask, there was still a certain amount of oxygen left in the hall of Kunlun Station, and he was not in a hurry to turn on the backup oxygen system, because this thing was not renewable, it was a disposable, and if you use a little, you will have to save it, so you can save it.

The old cat and Tang Yue dismantled the cabinet and carefully took out the control motherboard of the temperature control system, and Tang Yue smelled a smell of burnt paste.

"Something burned." Tang Yue whispered.

The old cat nodded slowly, reached out the tweezers in his hand, and made the messy lines clear one by one.

"Is there a short circuit somewhere?" Tang Yue copied an electric pen in his hand, squinted his eyes, and looked left and right, repairing household appliances was his old job.

"It may be the cause of the chip, which is affected by the single-event effect of high-energy radiation, and its control logic is faulty." The old cat said.

The so-called single event effect, is a kind of influence of high-energy radiation in the universe on semiconductor devices and integrated circuits, in the eyes of ordinary people, the information inside the computer is binary 0 and 1, but in physical hardware, the essence of this logic is actually the change of charge, integrated circuit components through the identification of electrons and produce operational logic - and the universe carries high energy elementary particles, can interfere with the work of circuits, resulting in logic errors, some wrong results are harmless, but some errors will lead to logic reversal, Or even burn the hardware.

The more sophisticated and high-frequency the computer, the more likely it is to produce this problem.

This is also why the computers in the Mars program are relatively backward, and when the VR system on Earth has long been popular, the space station and Kunlun station still use the original display screen and buttons, which is for safety reasons.

"But the temperature control system of OGS is similar to that of Gree air conditioner, and such a stupid and coarse design will also be affected by the single-event effect?" Tang Yue frowned.

"It's hard to say, the problems caused by high-energy radiation are purely occasional natural disasters, and the probability is very low, but it is unpredictable and difficult to eliminate." The old cat shook his head, "It's just that they generally don't cause any serious consequences, at most, they will be a blue screen of death, just restart it." ”

Tang Yue used a screwdriver to remove the screws on the protective cover of the motherboard one by one, and then threw them in the dinner plate.

From the outside, it was difficult for them to find the source of the fault, because there was no obvious damage to the motherboard, only a few spot solder footnotes were blackened, and if there was a problem with the chip, then it had to be tested with software.

The old cat sat in front of the computer and began to test the functionality of the motherboard.

"Based on my many years of work experience and a keen intuition." Tang Yue carefully looked at the components on the motherboard, "I think most of them are second ......."

"Control Unit 3 is damaged." The old cat looked up after the inspection.

"That's right, it's Three!" Tang Yue said, "I was about to say Unit 3!" ”

He gently unplugged the processor of the No. 3 control unit and looked at the light carefully, the chip itself was only the size of a fingernail, and the internal structure was completely encapsulated, and only the fine metal pins on both sides could be seen, as well as the eye-catching Intel logo.

From the outside, he can't find any problems, the structure of the semiconductor chip is completely enclosed in that small black square, but there is no doubt that there must be a mistake in this processor, and it is a very serious mistake, due to limited conditions, the old cat can not further explore the source of the fault, the semiconductor itself is a precision industry, if you want to explore the inside of the chip, you must polish off the surface of the package, which requires professional equipment and professional personnel, and only Intel and Huaqiangbei can do it in the world, Old cats can't do that.

Lao Mao and Tang Yue reinserted the chip and tested it many times, and finally had to admit that this thing had been completely damaged.

"Hell, this thing doesn't work." The old cat slapped the keyboard, "There must be a hard damage inside it, that is, physical damage, which cannot be repaired by software." ”

"If the motherboard can't be repaired, what about the temperature control system?" Tang Yue asked, "Will we have to live the life of an Eskimo in the future?" ”

"Without a temperature control system, the room temperature in Kunlun Station would sooner or later drop to minus 50 degrees, and even Eskimos would freeze to death...... What about backups? The old cat said, "I really can't fix it, let's put on the spare parts." ”

Tang Yue pointed to the chip on the plate, "This is the backup." ”

The old cat frowned, "What? ”

"Lao Wang, when they were still there, they overhauled the OGS cabinet once and replaced all the parts that could be replaced with new ones." Tang Yue pinched the chip on the plate and shook it, "This is the last OGS temperature control system processor in Kunlun Station...... The next batch of replacement chips would have left a year later and will never be now. ”

This time, the old cat stared.

"You mean you don't have to change it?"

Tang Yue nodded.

The old cat pinched the screwdriver in his paw and was silent for several seconds.

"I ...... Depend on! ”