Three minutes to take you to follow Bosch, review the development of sensors in the field of cars and mobile phones
According to Memes Consulting, Bosch currently manufactures about 4.5 million sensors per day. This number is expected to continue to expand as the number of connected objects increases. Starting with automotive airbags and developing today's smartphones, MEMS sensors have come a long way and are now in every corner of the office, in the pockets of clothing, and in the corners of the room.
Each smartphone has an automatic screen rotation function that allows you to switch between landscape and portrait mode; every new car sold in the US is equipped with airbags as required by law. The former satisfies the user's need to watch YouTube on the train; the latter can save the user's life in an accident. On the surface, the two are completely random and unrelated examples. However, airbags and smartphones have in common that most people imagine.
This story begins before the rise of electronics. In the spring of 1923, Bosch introduced a warning bell that warns drivers of car tire leaks. This is a simple and clever design. The warning bell is installed on the inside of each rim. If the tire pressure is low, each time the tire rotates, the warning bell will touch the ground and give an alarm. We can think of it as the original version of today's tire pressure monitoring system.
Technology is growing rapidly. In the late 1960s, Bosch began manufacturing mechanical pressure sensors for fuel injection systems and began manufacturing oxygen content (LAMBDA) sensors for pollution prevention systems in the 1970s. In 1987, the development of the next generation of smarter mechanical sensors was successfully established in Bosch.
At the time, for comfort and safety, and to meet the stringent pollution regulations in markets such as North America and Europe, automotive manufacturers around the world were looking for ways to integrate more and more electronic features into their modules. Bosch also embarked on the road to challenge.
The first wave of mass production of microelectromechanical systems (MEMS) dates back to 1995. The sensor size at that time was much larger than today, mainly used in car safety and comfort systems, and also played an important role in the operation of engine management software, after which it was used for power drive auxiliary systems such as anti-lock braking systems and electronic stability control. .
It is worth mentioning that the MEMS sensor will tell the onboard computer whether to open the airbag in the event of a collision. The advent of plasma etching technology known as the "Bosch Process" has made mass production possible. The automotive industry suddenly (unexpectedly) found that MEMS devices smaller than a quarter of the cherry core actually drove the industry to the heart of the technological revolution.
In the 1990s, as sensors became more powerful and smaller, the market demand grew. Smart engineers have emerged the idea of ​​applying sensor technology to areas outside the automotive industry. Everything looks perfect: the SUV market has prospered, and sensor technology has gained a foothold in all aspects of our daily lives, including work, education and entertainment.
The second wave of MEMS sensor booms was in the late 21st century, and although cars still use MEMS sensors, MEMS sensors have emerged in a variety of consumer electronics, including smartphones and tablets. For example, for indoor navigation to provide highly accurate data.
The "Small Spider Drone" in the movie "Spiderman: Going Home" is equipped with Bosch's inertial measurement unit. The electronic warrior of the Jedi Luke Skywalker in the movie "Star Wars" uses Bosch's accelerometer, Manus VR. The gloves use Bosch's magnetometer and sensor hub. Today, three-quarters of the MEMS sensors shipped by Bosch are for the consumer electronics market.
Technology is growing so fast that the next round of evolution has not taken too long. The current wave of sensors appeared around 2005. Compared to “predecessorsâ€, sensors have become smaller and more powerful, can be connected to huge Internet of Things (IoT) network devices, and begin to appear in smart city devices (such as Bosch climate). Monitoring system), smart phones, drones, etc. Of course, sensors continue to be used in the automotive sector and will continue to exist for the foreseeable future.
Reinhard Neul, head of Bosch's innovative sensor technology project, said: "In the field of autonomous driving, we are currently developing new angular rate sensors, combined with additional inertial sensors, lidars and satellite navigation to fully collect vehicle-related data. The control system can sense the position and movement of vehicles and other road users in real time and can respond to this information accordingly."
According to Memes Consulting, Bosch currently manufactures about 4.5 million sensors per day. This number is expected to continue to expand as the number of connected objects increases. Starting from car airbags and developing today's smart phones, MEMS sensors have come a long way. Now they are in the office, clothes pockets, and every corner of the room. They have become an indispensable part of human life. one.
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