JPH0283423A - Temperature monitor apparatus to be carried on artificial satellite - Google Patents

Abstract

PURPOSE:To obtain a large number of temp. measuring points with limited channel capacity by selecting a temp. sensor to be used in measurement among a plurality of temp. sensors arranged in a matrix state on the basis of a command and connecting the same to a telemetry transmission system through a control unit. CONSTITUTION:(mXn) temp. sensors a11-amn are arranged in a matrix state and transistors b1-bm, C1-Cn are mutually connected so that one of the temp. sensors a11-amn is connected to a telemetry system apparatus (f) when one of the transistors b1-bm and one of the transistors C1-Cn are respectively brought to a continuity state. It is controlled which of the temp. sensors a11-amn is selected for telemetry, by a matrix control apparatus (d) but this selection is changed by the command input (e) from the outside. The matrix of the temp. sensors a11-amn is the sensor group connected to one channel of telemetry channels and, by increasing (m) or (n), many temp. monitors become possible.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a temperature monitoring device mounted on an artificial satellite.

[Conventional technology]

Conventionally, temperature monitoring devices mounted on artificial satellites pass a constant current through the sensor and measure the voltage drop.Even if they have a subcommutation function, they basically only perform telemetry for one sensor. 1 channel was assigned.

[Problem to be solved by the invention]

In the conventional satellite temperature monitoring device described above, the number of measurement points of the temperature sensor is limited due to the channel capacity of the telemetry system, and as satellites become larger, some devices become unable to monitor temperature, so it is difficult to detect abnormal devices. This has the disadvantage that it hinders discovery and investigation of the cause of the problem.

The object of the present invention is to solve a limited number of telemetry systems.

An object of the present invention is to provide a temperature monitoring device mounted on an artificial satellite that can obtain a large number of temperature measurement points with a channel capacity.

[Means for solving problems]

The temperature monitoring device on board an artificial satellite of the present invention includes a plurality of temperature sensors arranged in a matrix, and a control device that selects a temperature sensor to be measured from among the plurality of temperature sensors by a command and connects it to a telemetry transmission system. It is equipped with

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

Temperature sensors all to a□ are arranged in a matrix (m×n), and when each of transistors b1 to b and transistors 01 to C0 becomes conductive, temperature sensors all to a are activated. Temperature sensors all~a□ and transistors b,~t)rm+C1~c0 are interconnected such that one of them is connected to the telemetry system f. Transistor b! The on/off of ~b, , c1~C0 is controlled by a matrix control device. For example, when transistors b1 and cl are conductive, a constant current flows from the telemetry system f to the temperature sensor all during sampling, and the voltage drop is input to one channel of the telemetry system jf and output as the telemetry output g. be done. Matrix temperature sensor a
Which of ll-a and fi is selected for telemetry is controlled by the matrix control device f, which can be switched by an external command e. A matrix of temperature sensors all to a□ is a group of sensors connected to one telemetry channel, and if h input channels are assigned to telemetry system f for temperature measurement, a similar matrix is It is possible to monitor temperatures of mxnxh by providing a set of 2. Even if h is limited by the number of channels of the telemetry system f, by setting m and n large, it is possible to monitor a large number of temperatures.

〔Effect of the invention〕

As explained above, the present invention has the effect of being able to obtain many temperature measurement points with a limited number of telemetry channels by connecting a matrix of temperature sensor groups that can be switched by commands to the input channels of a telemetry device. be.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. all~a0...Temperature sensor, b1~b,...Transistor, C! ~c8...Transistor, d...Matrix control device, e...Command input, f...
Telemetry system equipment, g...Telemetry output. town tfu

Claims (1)

[Claims] An artificial satellite-mounted satellite characterized by comprising a plurality of temperature sensors arranged in a matrix, and a control device that selects a temperature sensor to be measured from among the plurality of temperature sensors by a command and connects it to a telemetry transmission system. temperature monitoring device.