JPH09233569A - Environment measurement controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain a high processing speed and to improve the convenience of use by providing an arithmetic processing means converts input data from various sensors into data in the unit of characteristic values, applying arithmetic processing to the conversion result and sending the processed data to a host system. SOLUTION: A temperature sensor as a general-purpose sensor 10 is connected and a CPU 3 makes calculation of a mean value of a temperature measured by the sensor 10 and a temperature measured by a temperature sensor 7. That is, the detected value of the sensor 7 and the detected value of the temperature sensor being the sensor 10 are detected respectively as different detection reference value. Then the CPU 3 has a voltage-temperature conversion table and converts a voltage from each sensor into a temperature and calculates a mean temperature from the temperature data after the conversion. Since the quantity of transmission data is reduced by sending the result of arithmetic operation to a host system 1, the communication time between the system 1 and the environment measurement controller 2 is reduced and the data such as temperature with excellent conversion accuracy are sent.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to temperature, humidity, wind speed,
The present invention relates to an environment measurement control device that measures carbon dioxide and the like to control loads and the like.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional environment measurement control device disclosed in Japanese Patent Laid-Open No. 2-272926.
1 is a host system which manages the measurement data of the environment measurement control device, 2 is an environment measurement control device, 21 is the analog data measured by each sensor-7, 8, 9, 10, which will be described later, is converted into data that can be read by the host system. Converter, 7 is a temperature sensor for detecting temperature, 8 is a humidity sensor for detecting humidity, 9 is a wind speed sensor for detecting wind speed, 10 is a general purpose 4-
Each general-purpose sensor has a 20mA, 1-5V interface. FIG. 4 is an overall system diagram, and 22 in this figure is a man-machine operated by a person while looking at the screen, 2
3 is a serial interface for controlling the data from each gateway, and 24 is a gateway for controlling the environment measurement control device.

Next, the operation will be described. In FIG. 3, all values detected by the temperature sensor 7, the humidity sensor 8, the wind speed sensor 9, the general-purpose 4-20 mA sensor 10a, and the 1-5V sensor 10b are converted into voltage values and read by the converter 21. The converter converts the read voltage data into measured values such as temperature and humidity, and sends the measured values to the host system 1. In the host system, the gateway 24 shown in FIG. 4 organizes the measurement data from each environmental measurement control device 2, and the organized measurement data is converted by the serial interface 23 into data that can be received by the man-machine 22.
Will process, confirm and transfer the data. The man-machine 22 has a built-in CPU.

[0004]

Since the conventional environment measurement control device is configured as described above, when the average value is calculated from two or more input data, it is performed by the host system. Since the data is transmitted to the host system, there is a problem that the communication time between the host system and the environment measurement control device becomes long. In addition, when controlling the load according to the input value from each sensor, since the host system controls each general-purpose device that is the load after sequentially reading the input data from each sensor, There is a problem that it takes a long time from the time to control and the responsiveness is poor. Further, even if there is only one general-purpose sensor, two detection circuits are required, and even in the case of detecting temperature, only the accuracy corresponding to the resolution of the A / D conversion bit number of the CPU can be obtained. was there.

The present invention has been made in order to solve the above-mentioned problems, and it is not affected by noise so much, the response of the control process is fast, the detection circuit of the general-purpose sensor is sufficient, and the temperature detection is performed. It is an object of the present invention to provide an economical and highly reliable environmental measurement control device with improved resolution.

[0006]

An environment measurement control device according to the present invention is an environment measurement control device for converting input data from various sensors such as temperature, humidity, and wind speed and transmitting the converted data to a host system. The environment measurement control device is provided with an arithmetic processing means for converting input data from the various sensors into data in characteristic value units, arithmetically processing the conversion result, and transmitting the result to the host system. Is.

Further, the environment measurement control device has a control means for controlling the operation of a load connected to the equipment, and controls the control means according to a command from the host system.

The environment measurement control device skips and reads the input data from the various sensors in response to a command from the host system.

Further, the environment measurement control device includes a conversion detection circuit for converting the input data from the various sensors into a voltage value, and the conversion detection circuit includes a voltage dividing resistance circuit having a jumper wire. Then, the jumper wire is attached to convert the current into a voltage.

Further, in an environment measurement control device for converting input data from various sensors such as temperature, humidity, and wind speed and transmitting it to a host system, the environment measurement control device comprises:
An amplifier circuit that amplifies the input data from the various sensors, a determination unit that determines whether or not the input data from the various sensors has reached a preset range value, and based on this determination result. , A calculating means for calculating and transmitting the input data from the amplifier circuit when it is within a preset range value.

Further, when the judging means judges from the judgment result that it is not within the preset range, it judges whether or not it is within the lower limit range set corresponding to the set range.

Further, when the judging means judges from the judgment result that the range is not preset, it judges whether or not it is within the upper limit range set corresponding to the set range.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. First, the basic configuration of each of the following first to fifth embodiments of the present invention will be described. FIG. 1 is a block diagram of an environment measuring system according to the present invention. In this figure, 4 is an input data from a temperature sensor 7, for example, an amplifier circuit for amplifying a voltage value, and 5 is an input data from various general-purpose sensors 10. -Data (for example, 4-20mA, 1-5V data-
Of the general purpose load 11 is provided in the conversion detecting circuit 5, and 6 is a relay for controlling the operation of the general purpose load 11.
This is a jumper wire that changes the voltage dividing resistance in the conversion detection circuit by removing it with a 0 mA sensor or a 1-5 V sensor). It should be noted that other reference numerals having the same reference numerals as those of the conventional example indicate the same elements, and thus the description thereof will be omitted. 2 is a flow chart of the present invention.

The operation of the first embodiment will be described. For example, in the case where a temperature sensor is connected as the general-purpose sensor 10 in FIG. 1 and the CPU 3 which is an arithmetic processing unit performs an arithmetic operation such as an average temperature value of the temperature measured by the temperature sensor and the temperature measured by the temperature sensor 7. The detection value of the temperature sensor 7 and the detection value of the temperature sensor as the general-purpose sensor 10 are different from each other, for example, even if the same 10 ° C. is 1
0 mV and 20 mV are used as reference values), the average value is directly calculated from the detected values, and the higher system 1 converts the calculated detected values into temperatures. The accuracy becomes too bad. Therefore, the CPU 3 is provided with a voltage-temperature change table, the voltage value from each sensor is converted into a temperature, and then the average temperature is calculated from the temperature data after the conversion. If the data is transmitted to, the number of transmission data is reduced, so that the communication time between the host system and the environment measurement control device can be shortened, and data such as temperature with good conversion accuracy is transmitted.

As described above, the environment measurement control device is provided with the arithmetic processing means and the temperature data after the arithmetic operation is transmitted to the host system, so that the number of transmission data to the host system is reduced. The communication time between the host system and the environment measurement control device can be shortened, and since data such as temperature with good conversion accuracy is transmitted, the processing speed from calculation to control is fast and easy to use. A highly reliable environment measurement control device can be obtained.

Embodiment 2 The operation of the second embodiment will be described. When the general-purpose load 11 is controlled by the environmental data detected by the sensors 7 to 10 in FIG. 1, first, the host system 1 is initially set to determine when the input of which sensor has what value the load 11 is operated. Set. For example, when it is desired to operate the load 11 when the temperature becomes 20 ° C. or higher, when the temperature sensor 7 detects 20 ° C. or higher,
If the system 1 is set so that the relay 6, which is the control means, is turned ON, the operation control of the load with respect to the input temperature becomes possible. When changing the combination of the control load and each sensor, or when canceling the load operation control, the host system 1
Then, the combination content and the operation release content are reset. In the second embodiment, the operation of the load 11 is controlled based on the input temperature data from the temperature sensor 7, but other input data such as humidity and wind speed may be used.
The operation mode is not only above that value but below that value, or
It may be inside or outside of a plurality of set values.

Embodiment 3 The operation of the third embodiment will be described. In FIG. 1, when the humidity sensor 8 is not connected or used, the CPU 3 reads the detection value from the extra sensor (the sensor which is not used) by initializing the fact that the humidity sensor 8 is not used in the host system 1. Skip without skipping and read the data of the next sensor. In this way, the extra data is not read and communication with the host system is not performed, so the load on the CPU of the environment measuring device 2 is reduced.

Embodiment. 4 The operation of the fourth embodiment will be described. When the 4-20 mA general-purpose sensor 10 is connected to the environment measurement control device 2 of FIG. 1, by connecting the jumper wire 12 of the conversion detection circuit 5, the current from the sensor 10 is converted into a voltage by a voltage dividing resistor. , From the detection circuit 5 to the CPU 3. on the other hand,
The environment measurement control device 2 of FIG.
Is connected, the jumper wire 12 is left unconnected and the voltage from the sensor is directly transmitted from the detection circuit 5 to the CPU 3. As described above, by sharing the detection circuit of each general-purpose sensor 10 of 4-20 mA and 1-5V,
The number of components is small, downsizing is possible, and there is no reduction in measurement accuracy due to the effect of contact resistance, especially compared to when switching is performed using a switch, and an economical and highly reliable environment measurement control device can be obtained. To be

Embodiment 5 The operation of the fifth embodiment will be described. When the temperature sensor 7 is connected in FIG. 1 to detect its temperature, the resolution is determined by the number of A / D conversion bits of the CPU 3. For example, when the number of A / D conversion bits is 8 bits, a resolution of 2 8 = 256 can be obtained. Therefore, if you try to measure the temperature from -20 ℃ to 65 ℃,
When the temperature range of 85 deg ° C. is divided into 256, the resolution becomes 0.3 ° C. Therefore, if all temperature data in 0.1 ° C. units are required, it is impossible with 8-bit A / D resolution. Therefore, -20 ° C to 10 ° C, 35 ° C to 65
℃ is measured in 0.5 ℃ unit, 0.1 at 10 ℃ ~ 35 ℃
In addition to the reading port a which is directly connected to the temperature sensor 7, the temperature sensor 7 can be measured in units of ° C.
A read port b for reading the input data from the CPU through the amplifier circuit 4 is added to the CPU3, and the range of 0.5 ° C and the range of 0.1 ° C are compared to determine which range is valid. CP as a judgment means (not shown) for judging whether or not to
In addition to U3, a specific area within a wide measurement area can be measured in units of 0.1 ° C. The amplifier circuit 5 amplifies and outputs the input data from the temperature sensor 7, for example, a voltage value, and outputs CP according to the amplified voltage.
Since U3 calculates the temperature data, the temperature of the amplification region is subdivided as a result.

Next, referring to the flowchart of FIG. 2,
The operation of the determining means will be described. First, in step 13, the CPU 3 reads temperature data from the amplifier circuit 5 and the temperature sensor 7 through the lines a and b. Next, at step 14, if this temperature data is within a temperature range which is a preset characteristic value range, for example, a temperature range of 9.5 ° C to 34.5 ° C, the process proceeds to step 18, and If it is out of the set range, the process proceeds to step 15. In step 15, it is determined whether or not the temperature is within the lower limit temperature range (for example, 9.5 to 10.5 ° C.) set corresponding to the preset temperature range, and the result of the determination is 9. 5 ° C ~ 10.5
If it is in the temperature range of ° C, the process proceeds to step 18, and if it is out of the range, the process proceeds to step 16. In step 16, it is determined whether or not the temperature is within the upper limit range (for example, 33.5 to 34.5 ° C.) set corresponding to the preset temperature range, and the result of the determination is 33.5. If it is in the temperature range of 3 ° C to 34.5 ° C, the process proceeds to step 18, and if it is out of the range, the process proceeds to step 17. Proceeding to step 17, 0.
Judge that 5 ° C input is valid. That is, the CPU 3 validates the input from the a circuit and performs the calculation processing of the temperature data with the resolution of 0.5 ° C. In addition, when the process proceeds to step 18, 0.1
Judge that ℃ input is valid. In other words, the CPU 3 validates the input from the b circuit, and the CPU 3 calculates the temperature data with a resolution of 0.1 ° C. The above content is just an example of temperature,
The resolution may be another data value.

[0021]

As described above, according to the environment measurement control device of the present invention, the environment measurement control device is provided with the arithmetic processing means so that the temperature data after the calculation is transmitted to the host system. Since the number of transmission data of the above is reduced, the communication time between the host system and the environment measurement control device can be shortened, and the data such as the temperature with good conversion accuracy is transmitted, so that it can be used from calculation to control. It is possible to obtain an environment measurement control device with high processing speed, good usability, and high reliability.

Further, when changing the combination of the control load and each sensor or when canceling the operation control of the load, it is only necessary to reset the combination content and the operation cancellation content in the host system 1. Since the operation control can be performed, a convenient environment measurement control device can be obtained.

Further, since extra data is not read and communication with the host system is prevented, C of the environment measuring device 2
The load on the PU is reduced.

Further, by sharing the detection circuit of each general-purpose sensor 10 of 4-20 mA and 1-5 V, the number of constituent parts is small and the size can be reduced. In particular, as compared with the case of switching using a switch, It is possible to obtain an economical and highly reliable environment measurement control device without any decrease in measurement accuracy due to the influence of contact resistance.

Further, it is determined whether or not it is within a preset range value, and the calculation resolution of the input data is changed according to this judgment result. Therefore, the number of A / D conversion bits of the calculation processing means. Even if the size is small, a wide range of measurement can be taken and a specific range can be measured in detail. Therefore, it is easy to use, economical, and highly reliable environmental measurement control with improved measurement accuracy in the specific range. The device is obtained.

Further, since it is determined whether or not it is within the lower limit range corresponding to the preset range value, and the calculation resolution of the input data is determined based on the result of this determination, the lower limit of the set range is particularly important. It is possible to obtain a highly reliable environment measurement control device in which the reliability of the calculation processing result at the limit is improved and the measurement accuracy in the region is improved.

Further, it is determined whether or not it is within the upper limit range corresponding to the preset range value, and the calculation resolution of the input data is determined based on the result of this determination. It is possible to obtain a highly reliable environment measurement control device in which the reliability of the calculation processing result at the limit is improved and the measurement accuracy in the region is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of an environment measurement control device of the present invention.

FIG. 2 is a flowchart of the present invention.

FIG. 3 is a block diagram of a conventional environment measurement control device.

FIG. 4 is a system diagram of a conventional environment measurement control device.

[Explanation of symbols]

1 host system, 2 environment measurement control device, 3 environment measurement control device CPU, 4 amplification circuit, 5 conversion detection circuit, 6 general-purpose load control relay, 7 temperature sensor, 8 humidity sensor, 9 wind speed sensor, 10 general-purpose sensor, 11
General load, 12 jumper wires,

Claims (7)

[Claims] 1. An environment measurement control device for converting input data from various sensors such as temperature, humidity, and wind speed and transmitting the data to a host system, wherein the environment measurement control device receives input data from the various sensors. An environment measurement control device comprising: an arithmetic processing unit that converts data into data in units of characteristic values, arithmetically processes the conversion result, and transmits the result to the host system. 2. The environment measurement control device has a control means for controlling the operation of a load connected to the equipment, and controls the control means according to a command from the host system. 1. The environment measurement control device according to 1. 3. The environment measurement control device skips and reads input data from the various sensors in response to a command from the host system.
The environmental measurement control device according to any one of 1. 4. The environment measurement control device includes a conversion detection circuit for converting input data from the various sensors into a voltage value, and the conversion detection circuit includes a voltage dividing resistance circuit having a jumper wire. 4. The environment measurement control device according to claim 1, wherein the jumper wire is attached to convert current into voltage. 5. An environment measurement control device for converting input data from various sensors such as temperature, humidity, and wind speed and transmitting the same to a host system, wherein the environment measurement control device receives input data from the various sensors. -Amplifying circuit for amplifying data, determining means for determining whether or not the input data from the various sensors has reached a preset range value, and a preset range value based on the result of the determination Environment measurement control device, characterized by comprising: a calculating means for calculating and transmitting the input data from the amplifier circuit at the time of the inside. 6. The determination means, when the determination result determines that the range is not a preset range, determines whether or not it is within a lower limit range set corresponding to the set range. Item 6. The environment measurement control device according to item 5. 7. The determination means, when the determination result determines that the range is not a preset range, determines whether or not it is within an upper limit range set corresponding to the set range. Item 7. The environment measurement control device according to item 5 or 6.