Matrix type active temperature acquisition control system and acquisition control method for space camera

Abstract

The invention, which relates to the industrial automation field, provides a matrix type active temperature acquisition control system and acquisition control method for a space camera. Therefore, problems that that existing space camera temperature acquisition control system has the complicated structure and tedious testing process because of lots of cables and devices can be solved. The matrix type active temperature acquisition control system is composed of a temperature acquisition circuit, a temperature sensor, a heater, a heating circuit, a controller, a power module, a temperature acquisition matrix type cable and a heating matrix type cable. The temperature sensor collects temperature information of a corresponding measuring point of a space camera in real time and transmits the temperature information to the temperature acquisition circuit by the temperature acquisition matrix type cable; the temperature acquisition circuit converts the temperature information into a digital temperature signal and transmits the digital temperature signal to the controller; the controller outputs a heating control signal and sends the signal to the heating circuit; the heating control circuit transmits a heating voltage signal to the heater by the heating matrix type cable; and the heater heats the space camera. Therefore, the cable number for the active heat control system is reduced effectively.

Description

technical field

[0001] The invention relates to the field of industrial automation, in particular to an active temperature acquisition control system and an acquisition control method, which are applied to the active temperature acquisition control system and acquisition control method of a space camera. Background technique

[0002] Space cameras are placed on space vehicles such as satellites or spacecraft to complete the imaging task of ground scenes, and are important payloads of space vehicles. When the space camera is in orbit, it will be in a high vacuum, cold darkness and heat radiation environment for a long time. In order to enable the space camera to work normally in these harsh environments, it is necessary to control the temperature of the space camera so that the temperature of the space camera can be stabilized within the working temperature range, so that the imaging task can be completed.

[0003] The temperature control of space cameras is mainly divided i...

Examples

specific Embodiment approach 1

[0031] Specific implementation mode 1. Combination Figure 1 to Figure 6 Description of this embodiment, the space camera matrix active temperature acquisition control system includes a temperature acquisition circuit, a temperature sensor, and a temperature acquisition matrix cable electrically connected to the temperature sensor; the temperature sensor and the temperature acquisition matrix cable are fixed on On the space camera, the temperature acquisition circuit is located in the space camera control electric box; the temperature sensor collects the temperature information of the corresponding measuring point of the space camera in real time, and transmits the temperature information to the temperature acquisition circuit through the temperature acquisition matrix cable, and the temperature acquisition circuit Convert the temperature information into a temperature digital signal. The system also includes:

[0032] The heater fixed on the space camera, the heating matrix ...

specific Embodiment approach 2

[0044] Embodiment 2. This embodiment is the acquisition control method of the space camera matrix active temperature acquisition control system described in Embodiment 1. The method is implemented by the following steps:

[0045] The power module in the control box is powered on to supply power to other parts, the active temperature acquisition control system of the space camera starts to work, and the temperature acquisition start command is injected into the controller;

[0046] Step 1, the controller controls the temperature sensor matrix to collect temperature information; specifically:

[0047] The controller controls the first row, the first column to the 1nth column wire in the temperature acquisition matrix cable matrix to output the resistance value information of the first row in the temperature sensor matrix to the first analog multiplexer, and at the same time, the signal conditioning circuit converts the first The resistance value information of the first line out...

specific Embodiment approach 3

[0054] Specific Embodiment 3. This embodiment is an embodiment of the space camera matrix active temperature acquisition control system described in Specific Embodiment 1: this embodiment takes the acquisition of a temperature sensor matrix as an example to illustrate the composition of the temperature acquisition circuit. Figure 4 , the first analog multiplexer in the temperature acquisition circuit includes a plurality of AMUX chips, and the AMUX chip selects one of the X signal signals for output each time. Define the matrix temperature acquisition cable. The number of row cables and column cables in the matrix is ​​Y1 and Y2 respectively. Then take an integer after Y1 / X, and then add this integer + 1 to connect to the row line in the matrix temperature acquisition cable matrix. The number of AMUX chips in the cable; take an integer after Y2 / X, and then the integer + 1 is the number of AMUX chips connected to the matrix temperature acquisition cable matrix column cable. Co...

technical field

[0001] The invention relates to the field of industrial automation, in particular to an active temperature acquisition control system and an acquisition control method, which are applied to the active temperature acquisition control system and acquisition control method of a space camera. Background technique

[0002] Space cameras are placed on space vehicles such as satellites or spacecraft to complete the imaging task of ground scenes, and are important payloads of space vehicles. When the space camera is in orbit, it will be in a high vacuum, cold darkness and heat radiation environment for a long time. In order to enable the space camera to work normally in these harsh environments, it is necessary to control the temperature of the space camera so that the temperature of the space camera can be stabilized within the working temperature range, so that the imaging task can be completed.

[0003] The temperature control of space cameras is mainly divided i...

Examples

specific Embodiment approach 1

[0031] Specific implementation mode 1. Combination Figure 1 to Figure 6 Description of this embodiment, the space camera matrix active temperature acquisition control system includes a temperature acquisition circuit, a temperature sensor, and a temperature acquisition matrix cable electrically connected to the temperature sensor; the temperature sensor and the temperature acquisition matrix cable are fixed on On the space camera, the temperature acquisition circuit is located in the space camera control electric box; the temperature sensor collects the temperature information of the corresponding measuring point of the space camera in real time, and transmits the temperature information to the temperature acquisition circuit through the temperature acquisition matrix cable, and the temperature acquisition circuit Convert the temperature information into a temperature digital signal. The system also includes:

[0032] The heater fixed on the space camera, the heating matrix ...

specific Embodiment approach 2

[0044] Embodiment 2. This embodiment is the acquisition control method of the space camera matrix active temperature acquisition control system described in Embodiment 1. The method is implemented by the following steps:

[0045] The power module in the control box is powered on to supply power to other parts, the active temperature acquisition control system of the space camera starts to work, and the temperature acquisition start command is injected into the controller;

[0046] Step 1, the controller controls the temperature sensor matrix to collect temperature information; specifically:

[0047] The controller controls the first row, the first column to the 1nth column wire in the temperature acquisition matrix cable matrix to output the resistance value information of the first row in the temperature sensor matrix to the first analog multiplexer, and at the same time, the signal conditioning circuit converts the first The resistance value information of the first line out...

specific Embodiment approach 3

[0054] Specific Embodiment 3. This embodiment is an embodiment of the space camera matrix active temperature acquisition control system described in Specific Embodiment 1: this embodiment takes the acquisition of a temperature sensor matrix as an example to illustrate the composition of the temperature acquisition circuit. Figure 4 , the first analog multiplexer in the temperature acquisition circuit includes a plurality of AMUX chips, and the AMUX chip selects one of the X signal signals for output each time. Define the matrix temperature acquisition cable. The number of row cables and column cables in the matrix is ​​Y1 and Y2 respectively. Then take an integer after Y1 / X, and then add this integer + 1 to connect to the row line in the matrix temperature acquisition cable matrix. The number of AMUX chips in the cable; take an integer after Y2 / X, and then the integer + 1 is the number of AMUX chips connected to the matrix temperature acquisition cable matrix column cable. Co...

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