A camera weighing only 680 grams and the detector are unlocked, gradually moving away from the detector at a speed of about 0.2 meters per second. In the process of gradually moving away from the detector, the body of the “tianwen-1” detector with the national flag is photographed from near to far On October 1, on the occasion of the national day and the Mid Autumn Festival, the National Space Administration released the flight images of China’s first Mars exploration mission “tianwen-1”, with five-star red flag shining in space. Since China’s first autonomous Mars exploration mission was established, how to do a good job in the visual monitoring of Mars probe’s in orbit has become one of the important tasks faced by the research team. < / P > < p > in order to obtain the full picture of tianwen-1 in the process of running into the fire, the Mars Orbiter engineering measurement sub-system team of the eighth research institute specially designed a monitoring system composed of several “little guys” with “small mass, small head and low energy consumption”. < / P > < p > when taking self portraits on the ground, people can take pictures after selecting the angle and light and shadow with the help of a self timer such as a self timer. However, the self shooting of tianwen-1 is not so simple. < p > < p > experts told reporters that due to its large size, if the self timer stick strategy is adopted, “tianwen-1” needs to use a self timer pole with a length of 15 meters in order to achieve full-scale self portrait, which not only consumes a lot of resources, but also is prone to potential security risks. < p > < p > for this reason, the Mars Orbiter engineering measurement subsystem team of the eighth Institute of engineering and measurement proposed a “separated monitoring scheme”, that is, “throwing” a light camera to take photos of “tianwen-1” under appropriate lighting conditions, and transmit the image back to the “tianwen-1” probe in real time. < / P > < p > in order to successfully implement the separated monitoring scheme, the engineering measurement sub-system team of the Mars Orbiter of the eighth research institute needs a “little guy” who can “share out, shoot clearly, transmit back, and persist”: the camera can be “distributed” by using a light, small and low impact unlocking separation device; and < / P > < p > use a disposable battery that can provide power for more than one hour Can “hold on”, so that the ground can see the “Tianwen 1” running fire state. < / P > < p > considering that the camera may turn over when it is gradually away from the detector, the development team designed the camera as a positive and negative camera to ensure that the camera can also capture as many detector images as possible during the process of turning over. < / P > < p > after four years of research and development, this “little guy” with a total weight of 950 grams has successfully carried the “tianwen-1” Mars probe into space, and successfully separated the camera weighing about 680 grams, and obtained clear images, thus successfully completing the task of “tianwen-1” Panoramic visualization monitoring. < / P > < p > as an important part of the engineering measurement subsystem of the Mars Orbiter, the flag on the “tianwen-1” Mars probe was specially designed and developed for the mission. < / P > < p > in order to ensure that the national flag can still be bright and intact after the harsh space environment test, the national flag was finally installed on the side of the detector after multiple tests such as irradiation, alternating high and low temperature, and low temperature storage. < p > < p > at present, the engineering measurement subsystem of the Mars Orbiter has successfully completed many tasks, including solar wing deployment, directional antenna deployment, and self timer of the probe. < / P > < p > in the following ground fire transfer flight, the engineering measurement subsystem of the Mars Orbiter of the eighth Academy of Sciences will continue to carry out tasks, regularly carry out visual monitoring on the operation of solar wings and directional antennas, and continue to escort the “tianwen-1” fire exploration trip. Global Tech