JP2001256584A - Measuring system for mounting on flying object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a measuring instrument small by contriving a data measuring function and a data processing function of the measuring instrument, to also make the measuring instrument light in weight by making instrumentation with a sensor short and to reduce adjustment work by providing a correction function of sensor data. SOLUTION: This measuring instrument performing measurement and processing of the sensor data is divided into a plurality of measuring parts 2a, 2b,...2n and one unit of processing part 3. The miniaturized measuring parts 2a, 2b,...2n are respectively arranged in the vicinity of sensors 1a, 1b,..., 1n, and the distance of instrumentation between each measuring part and each sensor is made short. Because the part 3 and the respective measuring parts 2a, 2b,...2n are connected by a loop-shaped serial interface, the instrumentation between them is also reduced. In either the measuring parts 2a, 2b,...2n or the part 3 or both of them, data correction is performed to modify data errors when the respective sensors 1a, 1b,...1n are subjected to characteristic change due to drift.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measuring system for mounting a flying object mounted on a flying object such as a rocket or an artificial satellite, and more particularly, to a measuring system for mounting a flying object and receiving data from various sensors. The present invention relates to a measuring device for measuring and processing the data.

[0002]

2. Description of the Related Art A conventional measuring system for mounting a flying object mounted on a flying object such as a rocket or an artificial satellite includes various sensors, a measuring device, and a telemeter. That is, the measurement device receives data of various sensors installed at respective locations, performs measurement and processing of the data, and further transmits the data to the ground via a telemeter. It is configured.

FIG. 2 is a conceptual diagram showing a configuration of a conventional measurement system for mounting a flying object. That is, as shown in the figure, the conventional measurement system for mounting a flying object acquires and collects a plurality of sensors 11 for measuring an object to be measured, data from each sensor 11, and measures and processes these data. And a telemeter 14 for transmitting data acquired from the measuring device 12 to the ground and acquiring information about the data from the ground.

As shown in FIG. 1, a measurement device 12 and a plurality of sensors 11 for measuring an object to be measured are connected by instrumentation such as wiring. Further, the measurement device 12 includes a measurement function for measuring the acquired data, a processing function for processing the data, and a transmission circuit for transmitting the data to the telemeter 14 in a single housing.

[0005]

However, according to the prior art as described above, the measuring device 12 accommodates a functional unit for measuring and processing data and a transmitting circuit necessary for transmission in one housing. Therefore, the shape of the measuring device 12 is generally large, and the place where the measuring device 12 can be mounted is limited. In addition, since the positions of the objects to be measured are dispersed in various places, the instrumentation such as the wiring from the measuring device 12 to the various sensors 11 is inevitably lengthened, and the instrumentation is naturally proportional to this. Weight also increases.

If the output characteristics of the various sensors 11 change due to environmental drift such as temperature or changes over time, an error naturally occurs in the data, so that the internal circuit of the measuring device 12 needs to be readjusted. Time and labor for adjustment work are required.

As described above, in the conventional measuring system for mounting a flying object, since the mounting location of the measuring device mounted on a rocket or an artificial satellite is limited, the distance of the instrumentation to the sensor for measuring the object to be measured is long. The weight of the instrumentation increases in proportion to this. When the sensor changes its characteristics due to temperature drift or aging,
It is necessary to adjust the measurement circuit.

The present invention has been made in view of the above circumstances, and has as its object to improve the data measurement function and data processing function of a measuring device to reduce the size of the measuring device and to use various sensors. It is an object of the present invention to provide a flying object mounting measurement system capable of reducing the weight by shortening the instrumentation during the period, and further having a function of correcting sensor data to reduce adjustment work.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a measuring system for mounting a flying object according to the present invention separates a measuring unit and a processing unit and transmits digital data between them. The measurement unit is reduced in size, and the measurement unit can be arranged near the sensor to be measured.
Thereby, the instrumentation between the measurement unit and the sensor can be shortened, and the weight of the measurement system can be reduced. Furthermore, the measurement unit or the processing unit is provided with a correction function that can correct data acquired from various sensors. As a result, data adjustment work can be reduced.

That is, the measuring system for mounting a flying object according to the present invention includes a plurality of sensors mounted on the flying object and individually measuring a plurality of objects to be measured, and measuring by acquiring data from the plurality of sensors. And a measuring means for performing the processing, and transmitting the data obtained from the measuring means to the ground,
A flying object mounting measurement system configured by a telemeter that acquires information about data from the ground,
The measuring means receives a plurality of measurement units for measuring data individually acquired from the plurality of sensors, and performs processing by receiving each data measured by the plurality of measurement units, and transmits each processed data to the telemeter. And a processing unit for transmitting. The plurality of measurement units are individually arranged in the vicinity of the sensor for measuring the measurement target in accordance with the required measurement position of the flying object.

As described above, in the flying object mounting measurement system of the present invention, the measuring means for measuring and processing data is separated into the measuring unit and the processing unit, and the measuring unit is downsized.
Thus, the measurement unit can be arranged near the sensor to be measured in accordance with the required measurement position of the flying object. Therefore, the instrumentation between the sensor and the measurement unit can be shortened, and the weight of the instrumentation can be reduced.

In the measurement system for mounting a flying object according to the present invention, the plurality of measurement units include an analog / digital conversion unit for converting analog data obtained from a plurality of sensors into digital data. The digital data communicated between and is communicated by a serial-to-serial interface.

Therefore, according to the measuring system for mounting a flying object of the present invention, by using serial transmission for communication between the measuring unit and the processing unit, the instrumentation of the measuring unit and the processing unit can be connected with a minimum number of units. And the weight of the instrumentation can be reduced.

[0014] In the measurement system for mounting a flying object according to the present invention, at least one of the plurality of measurement units or the processing units may be configured to transmit data generated by the characteristic change when at least one of the plurality of sensors changes its characteristic due to drift. It is characterized by having a data error correction function for correcting an error.

Therefore, according to the flying object mounting measurement system of the present invention, even if the sensor changes its characteristics due to temperature drift or aging, the error of the data can be automatically corrected, so that the accuracy is always improved. High data can be measured.

Further, in the measuring system for mounting a flying object according to the present invention, at least one of the plurality of measuring units or the processing units includes data transmitted from a plurality of sensors and digital data converted by an analog / digital conversion unit. And a linearity correction function for correcting the linearity and the data conversion width.

Therefore, according to the measurement system for mounting a flying object of the present invention, even if the characteristics of the sensor change due to temperature drift or aging, the linearity and conversion width of the data can be automatically corrected. Therefore, highly accurate data can always be measured.

In the measurement system for mounting a flying object according to the present invention, the processing unit includes an external serial interface, and the processing unit receives the correction data from the outside through communication, so that the correction data of the data error correction function is transmitted. It is characterized in that it can be changed or the correction data of the linearity correction function can be changed.

That is, according to the flying object mounting measurement system of the present invention, the correction data can be easily changed from the outside by communication. Therefore, even after a sensor or a measuring device is attached to a flying object such as a rocket or an artificial satellite, drift or the like can be corrected.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a measurement system for mounting a flying object according to the present invention.
The measurement system for mounting a flying object according to the present invention basically includes a sensor for measuring an object to be measured, a measurement device for measuring and processing data from the sensor, and communication of information about data, as in the related art. And a telemeter between it and the ground. However, the features of the flying object mounting measurement system of the present invention are that the measurement device is divided into a measurement unit for measuring data and a processing unit for processing data, and that the measurement unit is close to the sensor. That is, each copy is divided into a plurality.

FIG. 1 is a configuration diagram showing an embodiment of a measurement system for mounting a flying object according to the present invention. That is, as shown in the drawing, the flying object mounting measurement system of the present invention acquires and collects data from the plurality of sensors 1a, 1b... 1n and the sensors 1a, 1b. A measuring device comprising units 2a, 2b... 2n and a processing unit 3 for processing data, and a telemeter 4 for transmitting data acquired from the measuring device to the ground and acquiring information on data from the ground. Have been.

That is, the measuring section 2a is connected to a plurality of sensors 1a for measuring an object to be measured by instrumentation.
b is connected to a plurality of sensors 1b for measuring the object to be measured by instrumentation, and similarly, the measuring unit 2n is connected to a plurality of sensors 1n for measuring the object to be measured by instrumentation.
Thus, the measuring unit 2a is near the sensor 1a, the measuring unit 2b is near the sensor 1b, and the measuring unit 2n is
n, the instrumentation connecting each measuring unit and the sensor is short.

The plurality of measuring units 2a, 2b...
It is connected to a processing unit 3 for processing data by instrumentation for serial transmission, and further connected to a telemeter 4 from the processing unit 3. The telemeter 4 has a function of transmitting the data of the measuring units 2a, 2b... 2n acquired from the processing unit 3 to the ground, and acquiring information on the data from the ground.

With such a configuration, for example, data measured by the plurality of sensors 1b is input to the measuring unit 2b disposed nearby, and data is amplified or amplified by a circuit (not shown) built in the measuring unit 2b. A / D conversion and data correction are performed. The A / D-converted digital data is stored in a register or a memory (not shown) in the measuring unit 2b, and the digital data is output to the processing unit 3 in response to a request from the processing unit 3. Further, the processing unit 3
Adds data to the data collected from the measurement unit 2b, as necessary, and performs processing such as shifting the time for outputting the data.

The data correction process performed by the measuring unit 2b is as follows.
If any or a plurality of the sensors 1b change their output characteristics due to temperature drift, aging, etc.,
It has a function of correcting data and correcting errors.
Further, these data correction functions may be provided in the processing unit 3.

Similarly, data measured by the plurality of sensors 1a is input to a measuring unit 2a which is disposed close to the instrumentation, and data amplification, A / D conversion, and data correction are performed by the measuring unit 2a. Done. The A / D-converted digital data is stored in a register or a memory in the measuring unit 2a, and the digital data is output to the processing unit 3 in response to a request from the processing unit 3. Further, the processing unit 3 performs processing such as saving the data and shifting the time for outputting the data to the data collected from the measurement unit 2a as necessary. The data correction process performed by the measurement unit 2a includes a function of correcting data and correcting an error when one or more of the plurality of sensors 1a change output performance due to temperature drift, aging, or the like. Have.

The measuring unit 2n performs the same data processing as the measuring units 2a and 2b.

In this way, the measuring units 2a, 2b... 2
The processing unit 3 having acquired the data from n outputs the data for each measurement item to the telemeter 4 at a desired timing. Then, the telemeter transmits these measurement data to the ground.

The processing section 3 has an external serial interface (not shown), and each of the measuring sections 2a, 2b.
Can be changed.

[0030]

As described above, according to the measuring system for mounting on a projectile according to the present invention, since the measuring section can be arranged near the object to be measured, the instrumentation between the measuring section and the sensor can be performed. Can be shortened, and the instrumentation weight can be reduced. Further, by shortening the instrumentation, the analog circuit is less likely to be affected by noise, so that the noise resistance of the entire system can be improved.

Further, the instrumentation between the plurality of measurement units and the processing units is formed as a loop-shaped serial interface, and communication is performed by digital data, thereby reducing instrumentation between the measurement units and the processing units. And the instrumentation weight can be reduced. In addition, by using a loop-shaped serial interface, it is possible to easily add or delete measurement units within a range that can be controlled by the processing unit. It can respond to increase or decrease.

Further, correction data corresponding to a change in output characteristics of a sensor or the like due to a temperature drift or a change over time can be provided in either the measurement unit or the processing unit. Can be easily changed. Therefore, even after a sensor or a measuring device is attached to a flying object such as a rocket or an artificial satellite, drift or the like can be corrected.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a measurement system for mounting a flying object according to the present invention.

FIG. 2 is a conceptual diagram showing a configuration of a conventional measurement system for mounting a flying object.

[Explanation of symbols]

 1a, 1b, 1n, 11 Sensors 2a, 2b, 2n Measurement unit 3 Processing unit 4, 14 Telemeter 12 Measurement device

Claims (6)

[Claims] 1. A plurality of sensors mounted on a flying object for individually measuring a plurality of objects to be measured, a measuring unit for acquiring data from the plurality of sensors to perform measurement and processing, and the measuring unit Transmitting the data acquired from the ground, and a telemeter for acquiring information about the data from the ground, a flying object mounted measurement system, wherein the measurement means, the data individually acquired from the plurality of sensors A plurality of measurement units that perform measurement of the plurality of measurement units, a processing unit that receives and processes each data measured by the plurality of measurement units, and transmits each processed data to the telemeter. The measurement unit of
A measurement system for mounting a flying object, which is individually arranged in the vicinity of a sensor for measuring an object to be measured. 2. The plurality of measurement units include an analog / digital conversion unit that converts analog data obtained from the plurality of sensors into digital data, and is communicated between the plurality of measurement units and the processing unit. The flying object mounting measurement system according to claim 1, wherein the digital data is communicated by a serial serial interface. 3. At least one of the plurality of measurement units or the processing unit has a data error correction function for correcting an error of data caused by a characteristic change when at least one of the plurality of sensors has a characteristic change due to a drift. The flying object mounting measurement system according to claim 1, wherein the measurement system is provided. 4. At least one of the plurality of measurement units or the processing unit includes a linearity and a data conversion width of data transmitted from the plurality of sensors and digital data converted by the analog / digital conversion unit. 4. The measurement system for mounting a flying object according to claim 2, further comprising a linearity correction function for correcting the flying object. 5. The processing unit includes an external serial interface, and the processing unit changes correction data of the data error correction function by receiving correction data from outside through communication. The flying object mounting measurement system according to claim 3. 6. The processing unit has an external serial interface, and the processing unit changes correction data of the linearity correction function by receiving correction data through external communication. The flying object mounting measurement system according to claim 4.