JP2011165154A - Measured value management system using measuring equipment with display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measured value management system for measuring equipment with a display, which facilitates management of a measured value by simple constitution, in the measuring equipment for converting and displaying a measured signal, and outputting an alarm, or the like. <P>SOLUTION: Historical data stored in a memory part 205 is encoded into a QR code 225 by an encoder part 206, to be displayed in a liquid crystal display part 204. An image thereof is captured by a camera part 301 of a cellular phone 30, and is decoded into a readable character data by a decoder part 305, to be output to a liquid crystal display part 306 in the next stage. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention is a measurement value management system using an instrumentation device equipped with a display such as a liquid crystal display device or a 7-segment LED device, particularly in an instrumentation device that converts a measurement signal, displays it, outputs an alarm, etc. This is a measurement value management system using instrumentation equipment with a display that can easily perform the measurement value management with a simple configuration.

  Conventionally, when measuring an instrument such as a liquid crystal display device or a 7-segment LED device and measuring a temperature, which is one of physical quantities, for example, the user must first control the solid surface to be controlled, the solid interior Depending on the conditions such as the temperature measurement range and measurement accuracy in the system that controls the temperature of gases, etc., the sensor unit is appropriately selected from various temperature sensors such as thermocouples, resistance thermometers, and thermistors. It was.

  Next, the sensor unit was installed in the system of the system that controls the controlled object, and the output terminal side of the temperature sensor was connected to the sensor input terminal of the instrumentation device.

  Then, when the device of the system that controls the temperature of the solid surface, solid inside, gas, etc. to be controlled starts operating and measurement by the temperature sensor is started, the temperature measurement value is changed from the sensor input terminal of the instrumentation device. A corresponding input signal is input, the A / D conversion is performed by the built-in signal conversion unit, and the arithmetic processing unit converts the input signal into a unified signal within a predetermined range (for example, DC 4 to 20 mA or DC 1 to 5 V). Thus, real-time measurement data is output, a part of the binary data is supplied to the liquid crystal display unit, and a predetermined numerical value is displayed on the liquid crystal display unit.

  Here, it is not necessary for the user to perform function settings such as setting according to the sensor type, upper limit / lower limit setting, scaling setting, alarm output setting in advance on the initial setting screen of the liquid crystal display unit before starting measurement. However, since desired measurement data is displayed after the start of measurement, appropriate measurement value management can be performed.

  In recent years, paperless recorders equipped with a liquid crystal display device and displaying various measurement data in real time without the need for recording paper have been put on the market.

  For example, as shown in FIG. 11, on the simple setting screen of the paperless recorder, the user can easily check various setting states such as a temperature range and a time axis that are previously performed by the user's key operation on the display screen. It has become.

  At the same time, a trend graph during measurement in which the measurement date and time, the measurement value, and the number of input channels are 10 or more is displayed (for example, see Patent Document 1).

  On the other hand, a method has been proposed in which a two-dimensional barcode displayed on a TV monitor is read by a portable terminal with a two-dimensional barcode reading function, and a URL for ordering goods / services can be directly accessed to place an order easily. (For example, refer to Patent Document 2).

Japanese Unexamined Patent Publication No. 2007-132661 (page 7, FIG. 6) JP 2006-99150 A

  However, even if the user uses the paperless recorder described above, the measurement data of the current value at the time of observation, the past transition and the trend can be easily grasped visually, but the amount of information of the display data is very large, It is difficult to acquire, store, and transmit data only for desired measurement data.

  In particular, when the number of instrumentation equipment to be managed is large, it is not suitable for statistical processing of acquired measurement data in addition to the increase in management man-hours, and the solid surface, solid interior, gas, etc. to be controlled As a result, it is difficult to manage the measured values quickly and accurately in the system that controls the temperature of the system, so that the user can detect various abnormalities such as temperature runaway and signs of accidents, or be monitored by the user. There is a problem that it is impossible to grasp the abnormality history when there is not, and to diagnose and discover the cause early.

  In addition, when an explosion-proof outer casing is required for instrumentation equipment to prevent explosion outside the container even if an explosion occurs inside the container, Designed to be robust and fully enclosed to withstand, users cannot access it directly during measurement.

  Therefore, it is impossible to use an external recording medium such as a CompactFlash (registered trademark) or a memory card that can be attached to and detached from the main unit for acquiring measurement data. Even in such a case, the user directly accesses the instrumentation device. Therefore, there has been a demand for a measured value management system using an instrument with a display device having a simple configuration that enables acquisition, storage, and transmission of measurement data including instantaneous values and integrated values.

  In particular, among measurement data, measurement value information of either the maximum input value or minimum input value, or event information of alarm output, loop check, power ON, or power OFF, and the occurrence time information of the information As described above, so-called historical data acquisition is a combination of various abnormalities such as temperature runaway of the device in the system that controls the temperature of the solid surface, solid inside, and gas to be controlled by the user, as well as a sign of an accident. Although it is very important data to detect the cause and to diagnose and discover the cause at an early stage, Data could not be easily acquired, and in addition, the acquired measurement data could not be stored and transmitted.

  The present invention solves the above-described conventional problems, and uses a display-equipped instrument that can easily acquire, store, and transmit instantaneous values, integrated values, or historical data with a simple configuration. An object is to provide a measurement value management system.

  In order to solve the above-described conventional problems, in a measurement value management system using an instrument with a display according to the present invention, a sensor unit for sensing a physical quantity, and an electrical signal acquired from the sensor unit as a predetermined input An input processing unit that performs the input processing, a signal conversion unit that converts an output signal of the input processing unit into a unified signal within a predetermined range, and a unified signal output from the signal conversion unit by A / D conversion to a predetermined value An arithmetic processing unit that performs the output arithmetic processing, a display unit that displays character data according to binary data output from the arithmetic processing unit, a memory unit that stores predetermined specific data extracted by the arithmetic processing unit, An instrumentation device including an encoder unit that encodes data stored in the memory unit into a two-dimensional code, a camera unit that can recognize the two-dimensional code displayed on the display unit of the instrumentation device, and a camera unit A measurement value management system using an instrumentation device with a display, comprising: a receiving device including a decoder unit that decodes the two-dimensional code recognized via the data into readable character data; An image of the two-dimensional code converted by the encoder unit of the device is displayed on the display unit of the instrumentation device, the image is recognized by the camera unit of the receiving device, and decoded by the decoder unit, and the predetermined specific data To obtain readable character data corresponding to.

  According to this configuration, an image converted into a two-dimensional code by the encoder unit of the instrumentation device is displayed on the display unit of the instrumentation device, and the image is recognized by the camera unit of the reception device and decoded by the decoder unit. By using the instrumented instrument with a display that can acquire, store, and transmit the measured data without acquiring direct access to the instrumented instrument with a simple configuration by acquiring the character data corresponding to the specific data Provision of a measurement value management system can be realized.

  In addition, when an explosion-proof outer casing is required for instrumentation equipment to prevent explosion outside the container even if an explosion occurs inside the container, Because it is designed to be durable and fully enclosed, it cannot be directly accessed by the user during measurement. Use an external recording medium such as a CompactFlash (registered trademark) or a memory card that can be attached to and detached from the main unit to acquire measurement data. However, even in such a case, it is possible to acquire, store, and transmit measurement data without a direct access to the instrumentation device with a simple configuration.

  In addition, even if there are many instrumentation devices to be managed, the acquired measurement data can be easily processed, enabling statistical processing and quick and highly accurate measurement value management. Become.

  In the measurement value management system using the instrumentation with display according to the present invention, in addition to the above configuration, the predetermined specific data may include an instantaneous value or an integrated value of the measurement data acquired via the sensor unit. preferable.

  According to this configuration, when predetermined specific data is an instantaneous value of measurement data, real-time measurement data following changes in the physical quantity to be controlled can be easily acquired, stored, and transmitted. A quick response is possible in management.

  In addition, when the predetermined specific data is an integrated value, for example, a power meter that serves as a measuring means even if the target of control is consumption of resource energy such as electric power, gas, clean water, supply heat, and hot water supply By introducing a measurement value management system using an instrument with an indicator according to the present invention to gas flow meters, water flow meters, calorimeters, hot water meters, etc., energy supply companies and local governments Therefore, the consumption amount can be easily grasped, so that the cost billing system for consumers can be made more efficient.

  In the measurement value management system using the instrument with an indicator according to the present invention, in addition to the above configuration, the predetermined specific data includes measurement value information of either the input maximum value or the input minimum value, or an alarm output. It is preferable to include historical data in which event information of any one of loop check, power ON, and power OFF and occurrence time information of the information are paired.

  According to this configuration, the user can detect various abnormalities such as temperature runaway in the system that controls the temperature of the solid surface, solid inside, and gas to be controlled, as well as signs of accidents, or can be monitored under the visual inspection of the user. It is possible to easily acquire data that is very important for diagnosing and discovering the cause of abnormalities at an early stage by grasping the history of abnormalities.

  In the measurement value management system using the instrumentation with display according to the present invention, in addition to the above-described configuration, when a predetermined trigger signal is input from the outside, predetermined specific data stored in the memory unit is stored as 2 It is preferable to encode the dimension code and display it on the display unit of the instrumentation device.

  According to this configuration, only the real-time measurement data is displayed during normal operating, and the two-dimensional code can be displayed on the display unit only when the user needs to acquire, store, and transmit predetermined specific data. Therefore, the limited display area can be used efficiently, and there is no need to provide a large display section in the instrumentation device.

  In the measurement value management system using the instrumentation with display according to the present invention, in addition to the above configuration, when a predetermined trigger signal is input from the outside, predetermined specific data stored in the memory unit is cleared. It is preferable to set default data.

  According to this configuration, when the user desires, the predetermined data acquired so far can be temporarily cleared and acquisition of new predetermined specific data can be started. After that, it is possible to acquire, store, and transmit predetermined specific data again, so that quick process repair can be easily realized.

  In the measurement value management system using the instrumentation with display according to the present invention, in addition to the above configuration, when a predetermined trigger signal is input from the outside, the illumination unit of the display unit emits light, and the display unit It is preferable to irradiate the image of the two-dimensional code displayed on the screen.

  According to this configuration, even if the surroundings where the instrumentation device is installed are dark and it is difficult to visually recognize the screen of the display unit, the image can be easily displayed even in an atmosphere where the two-dimensional code cannot be recognized by the camera. Can be recognized by the camera unit of the receiving device and decoded by the decoder unit.

  In the measurement value management system using the instrumentation with display according to the present invention, in addition to the above configuration, the display magnification of the image of the two-dimensional code displayed on the display unit when a predetermined trigger signal is input It is preferable to display at a predetermined time interval by changing.

  According to this configuration, even if the distance between the display unit of the instrumentation device and the camera unit of the receiving device changes every time the image data of the two-dimensional code is recognized, it is necessary for recognition within the recognition area of the camera unit. Therefore, measurement data can be easily acquired by improving the camera recognizability of the two-dimensional code.

  In the measurement value management system using the instrumentation with display according to the present invention, in addition to the above configuration, the input of a predetermined trigger signal is received from a plurality of trigger input units provided in the instrumentation. This is preferably performed when the relative difference in the amount of light exceeds a predetermined threshold.

  According to this configuration, the desired function described above can be obtained by irradiating the predetermined trigger input unit with a penlight or a laser pointer, for example, without directly accessing the instrumentation device.

  In the measurement value management system using the instrumentation device with a display according to the present invention, in addition to the above configuration, the reception device has a camera function capable of recognizing a two-dimensional code displayed on the display unit of the instrumentation device. A mobile terminal device is preferred.

  According to this configuration, for example, it is possible to use a portable terminal that is widely spread in the market and that can recognize a typical QR code (registered trademark) as a two-dimensional code, and thus is easy to use and is supported by many users. Can provide a system.

  In the measurement value management system using the instrumentation device with a display according to the present invention, in addition to the above configuration, the reception device has an imaging camera function capable of recognizing a two-dimensional code displayed on the display unit of the instrumentation device. The PC preferably includes a display unit that displays character data obtained by decoding two-dimensional codes of one or more instrumentation devices.

  According to this configuration, in particular, a large number of measurement points are required in the system device that controls the temperature of the solid surface, solid interior, gas, and the like to be controlled, and the number of instrumentation devices to be managed is large. However, not only can the number of management man-hours be reduced, but if an environment in which an imaging camera is always installed and a two-dimensional code can be acquired is prepared, it is possible to completely unmanned.

  In addition, statistical processing of acquired measurement data is facilitated, and rapid and highly accurate measurement value management of a system that performs temperature control of a solid surface, a solid interior, or a gas to be controlled can be realized.

  According to the measurement value management system using the instrumentation device with a display according to the present invention, the image converted into the two-dimensional code by the encoder unit of the instrumentation device is displayed on the display unit of the instrumentation device, and the image is received. Recognized by the camera unit of the device and decoded by the decoder unit to obtain readable character data corresponding to the specified specific data, so that the measurement data obtained from the instrumentation device can be obtained with a simple configuration In addition, it is possible to provide a measurement value management system using an instrument with a display that can be stored and transmitted.

The whole block diagram of the measured value management system using the signal converter in embodiment of this invention The flowchart for acquiring the historical data of the signal converter in the embodiment of the present invention and displaying it on the liquid crystal display unit (A) Front panel view of the signal converter in the embodiment of the present invention, (b) Enlarged view when the QR code is displayed on the liquid crystal display portion of the signal converter in the embodiment of the present invention. Flowchart for displaying historical data on a liquid crystal display unit in a mobile phone according to an embodiment of the present invention (A) The figure seen from the housing | casing outer side of the mobile telephone which has a camera function in embodiment of this invention, (b) The figure seen from the housing | casing inner side of the mobile telephone which has a camera function in embodiment of this invention, (C) The enlarged view of the liquid crystal display part of the portable terminal device which has a camera function in embodiment of this invention The whole block diagram which shows the modification of the signal converter in embodiment of this invention Flowchart for obtaining historical data and displaying it on a liquid crystal display in a modification of the signal converter in the embodiment of the present invention (A) Front panel view in a modified example of the signal converter, (b) Enlarged view when the QR code is displayed on the liquid crystal display part of the signal converter in the modified example of the signal converter The whole block diagram which shows the modification of the measured value management system using the signal converter in embodiment of this invention The figure which shows the liquid crystal display part of PC in the modification of the measured value management system using the signal converter in embodiment of this invention Diagram showing an example of a trend graph displayed on a conventional paperless recorder

  Hereinafter, in order to describe an embodiment of the present invention, it will be described with reference to the drawings.

  FIG. 1 is an overall configuration diagram of a measurement value management system using a signal converter according to an embodiment of the present invention, and FIG. 2 obtains historical data of the signal converter according to the embodiment of the present invention and displays it on a liquid crystal display. FIG. 3A is a front panel view of the signal converter in the embodiment of the present invention, and FIG. 3B is a flowchart of the signal converter in the embodiment of the present invention. FIG. 4 is an enlarged view when a QR code is displayed on the liquid crystal display unit. FIG. 4 is a flowchart for displaying historical data on the liquid crystal display unit with the mobile phone according to the embodiment of the present invention. FIG. FIG. 5B is a view from the outside of the casing of the mobile phone having the camera function in the embodiment of the present invention, and FIG. 5B is a view from the inside of the casing of the mobile phone having the camera function in the embodiment of the present invention. In the figure FIG. 5C is an enlarged view of the liquid crystal display unit of the portable terminal device having a camera function in the embodiment of the present invention, and FIG. 6 is an overall view showing a modification of the signal converter in the embodiment of the present invention. FIG. 7 is a configuration diagram, and FIG. 7 is a flowchart for acquiring historical data and displaying it on a liquid crystal display unit in a modification of the signal converter in the embodiment of the present invention. FIG. FIG. 8B is an enlarged view when a QR code is displayed on the liquid crystal display portion of the signal converter in the modification of the signal converter, and FIG. FIG. 10 is an overall configuration diagram illustrating a modified example of the measurement value management system using the signal converter in the embodiment, and FIG. 10 illustrates a PC in the modification example of the measurement value management system using the signal converter in the embodiment of the present invention. LCD display It is a diagram.

  First, FIG. 1 is an overall configuration diagram of a measurement value management system using a signal converter according to an embodiment of the present invention. For example, temperature control of a solid surface, a solid interior, a gas, or the like to be controlled is performed. 1 shows an embodiment when used in an apparatus of a system, which is composed of a sensor unit 10, a signal converter 20 as an instrumentation device with a display, and a mobile phone 30 as a receiving device. Has been.

  Here, the sensor unit 10 is composed of a temperature sensor such as a thermocouple, a resistance temperature detector, or a thermistor, which is appropriately selected according to conditions such as a temperature measurement range and measurement accuracy, and is surrounded by a broken line. It is arranged at a desired location such as a solid surface, a solid interior, or a gas to be controlled, senses the temperature of the control target to be controlled, and outputs an electrical signal to the input processing unit 201 of the signal converter 20.

  Next, the input processing unit 201 performs low drift input processing on the electrical signal output from the sensor unit 10 and outputs the processed signal to the signal conversion unit 202 at the next stage.

  Next, the signal conversion unit 202 performs A / D conversion on the output of the input processing unit 201 and outputs it to the digital arithmetic circuit unit 203 at the next stage.

  The digital arithmetic circuit unit 203 converts the digital signal input from the signal conversion unit 202 into a unified signal (for example, DC 4 to 20 mA, DC 1 to 5 V) within a predetermined range by performing necessary input arithmetic processing such as scaling. When the real-time measurement data is output as binary data to the next-stage liquid crystal display unit 204 and displayed as readable character data, or when the scaling value input from the signal conversion unit 202 exceeds a predetermined threshold value Output calculation processing such as driving the relay 207 to output an alarm or setting up sensor input settings, alarm output settings, delay time, etc. from the PC via a configurator connection jack (not shown) Has been given.

  Here, when the real-time measurement data exceeds a predetermined threshold, the relay 207 connects a contact point connected to the COM terminal 210 in accordance with a command from the digital arithmetic circuit unit 203 after a predetermined delay time from the NC terminal 209 to the NO terminal 208. The contact is output to the external alarm device.

  In addition, the digital arithmetic circuit unit 203 is a historical data paired with measured value information of the maximum input value and minimum input value, event information of alarm transmission and power ON, and occurrence time information according to a predetermined flowchart described later. Are stored in the memory unit 205 in the next stage.

  The historical data stored in the memory unit 205 is once taken into the digital arithmetic circuit unit 203 and encoded into a QR code 225 that is a two-dimensional code by the encoder unit 206, and is the same as the measurement data in the liquid crystal display unit 204. It is displayed as an image on the screen (see FIG. 3B).

  On the other hand, when an image of the QR code 225 displayed on the liquid crystal display unit 204 of the signal converter 20 is captured by the camera unit 301 of the mobile phone 30 by the user's operation, the camera unit 301 outputs an analog captured signal to the next stage. To the analog signal processing unit 302.

  Then, the analog signal processing unit 302 performs predetermined analog signal processing on the photographed signal and outputs it to the A / D conversion unit 303 at the next stage.

  Next, the A / D conversion unit 303 converts the output signal into a digital signal and outputs the digital signal to the next-stage digital signal processing unit 304, which can be decoded by the next-stage decoder unit 305. Predetermined digital signal processing is performed so that

  Then, the decoder unit 305 decodes the digital signal output subjected to the digital signal processing into readable character data and outputs it to the next-stage liquid crystal display unit 306, and the liquid crystal display unit 306 displays the character data. .

  Further, the user can store only desired data in, for example, the internal memory unit 307 of the DRAM by operating the operation unit 308 having keys arranged as necessary.

  In addition, the user replaces the internal memory unit 307 with an SD card, compact flash (registered trademark), smart media (registered trademark), memory stick (registered trademark), multimedia card (registered trademark), not shown. It is configured so that it can be stored in an external memory unit such as a USB or a small PC card.

  Further, other receiving devices such as another mobile phone (not shown) or a PC connected to the Internet by operating the operation unit 308 by operating desired data stored in the internal memory unit 307 or the external memory unit (not shown). Can also be sent to.

  Next, processing performed by the digital arithmetic circuit unit 203 from when the signal converter 20 is turned on until the QR code 225 is displayed on the liquid crystal display unit 204 will be described using the flowchart shown in FIG.

  First, immediately after the power is turned on, the power-on time is stored in the memory unit 205 (S01), and then the maximum temperature, the minimum temperature, and the alarm ON time stored in the memory unit 205 are set to default values ( S02).

  Then, the measurement operation is started, and it is determined whether or not the temperature measurement data measured in real time is larger than the maximum temperature (S03).

  If the measurement data is larger than the maximum temperature, the maximum temperature is replaced with the measurement data (S04), and the process goes to the next step. If the measurement data is not larger than the maximum temperature, the next step is continued. go to.

  Next, it is determined whether or not the temperature measurement data measured in real time is smaller than the minimum temperature (S05).

  If the measurement data is smaller than the minimum temperature, the minimum temperature is replaced with the measurement data (S06), and the process proceeds to the next step. If the measurement data is not smaller than the minimum temperature, the process proceeds to the next step.

  Next, the switching direction of the relay 207 is determined (S07), and if it is on the NC terminal side, predetermined data stored in the memory unit 205 is converted into a QR code (S10).

  On the other hand, the switching direction of the relay 207 is determined (S07), and if it is on the NO terminal side, it is determined whether the alarm ON time data is stored (S08). The data is stored in the memory unit 205 as the ON time (S09), and predetermined data stored in the memory unit 205 is converted into a QR code (S10).

  On the other hand, it is determined whether or not the alarm ON time data is stored (S08). If the alarm ON time data is not stored, the predetermined data stored in the memory unit 205 is converted into a QR code as it is (S10). ).

  Thereafter, the QR code is displayed on the liquid crystal display unit 204 (S11), and the process returns before determining whether the measurement data is larger than the maximum temperature (S03). Thereafter, the steps from S03 to S11 are performed. Repeat during operation of the signal converter 20.

  Next, the configuration of the front panel of the signal converter 20 will be described with reference to FIGS. 3 (a) and 3 (b).

  Above the front panel of the signal converter 20, a liquid crystal display unit 204 for displaying predetermined display contents is disposed.

  Below that, a MODE button 220 for entering various setting mode screens, a SET button 221 for selecting and determining a command displayed on the liquid crystal display unit, and moving the cursor, and a cursor for increasing a display value An UP button 222 for moving the button upward, and a DOWN button 223 for decreasing the display value or moving the cursor downward are arranged.

  Further below that, a storage unit 224 storing a jack (not shown) for connecting the configurator is arranged.

  Real-time temperature measurement data is displayed on the right side of the screen of the liquid crystal display unit 204. On the left side of the screen, the measurement value information of the maximum temperature and the minimum temperature, the alarm output, and the power ON event information described above. The historical data that is paired with the occurrence time information is encoded and displayed as a QR code 225.

  Below that, various threshold setting values 226 set for alarm output are displayed. By switching the display, it is possible to display the excitation direction at the time of alarm and alarm operation.

  Next, the image of the QR code 225 displayed on the liquid crystal display unit 204 of the signal converter 20 is captured by the camera unit 301 of the mobile phone 30 using the flowchart of FIG. 4 and FIGS. Steps from when the predetermined data is stored in the internal memory unit 307 will be described.

  First, the QR code photographing mode is set by key operation of the operation unit 308 of the mobile phone 30 (S21), and then the QR code 225 is captured by the camera unit 301 while confirming with the image on the liquid crystal display unit 306 (S22).

  Next, when the QR code 225 is photographed by operating the key of the operation unit 308 (S23), the image data is analog signal processing unit 302, A / D conversion unit 303, digital signal processing unit as described above. The QR code 225 is decoded through 304 and the decoder unit 305 (S24), and readable character data is displayed on the liquid crystal display unit 306 (S25).

  Next, after the user confirms predetermined historical data displayed on the liquid crystal display unit 306, a desired storage range in the historical data can be selected by key operation of the operation unit 308 as necessary (S26). ).

  Then, the character data in the selected storage range is stored in the internal memory unit 307 (S27), and the operation ends.

  Therefore, the character data stored in the internal memory unit 307 can be reproduced on the mobile phone 30 at any time by the key operation of the operation unit 308, and transferred to another mobile phone or a PC connected to the Internet as necessary. Is also possible.

  Further, as shown in FIGS. 5A and 5B, the operation unit casing 31 and the display unit casing 32 are combined so as to be foldable via the hinge portion 33, and the operation unit casing 31 is assembled. The camera unit 301 is built in outside.

  Further, the operation unit casing 31 and the display unit casing 32 are both formed thin, and an operation unit 308 in which various operation keys are arranged is provided inside the operation unit casing 31. A liquid crystal display unit 306 is provided on the inner side.

  Further, as shown in FIG. 5C, in addition to the model number and serial number that can identify the signal converter 20 from which the measurement data is acquired, the historical data described above are the maximum temperature, minimum temperature, alarm output, and The power ON is displayed on the liquid crystal display unit 306 together with each occurrence time information.

  As described above, according to the present embodiment, an instrumentation device with a display that can acquire, store, and transmit measurement data with a simple configuration without directly accessing the instrumentation device is used. Provision of a measurement value management system can be realized.

  In addition, when an explosion-proof outer casing is required for instrumentation equipment to prevent explosion outside the container even if an explosion occurs inside the container, Because it is designed to be durable and fully enclosed, it cannot be directly accessed by the user during measurement. Use an external recording medium such as a CompactFlash (registered trademark) or a memory card that can be attached to and detached from the main unit to acquire measurement data. However, even in such a case, it is possible to acquire, store, and transmit measurement data without a direct access to the instrumentation device with a simple configuration.

  Also, when the user detects various abnormalities such as temperature runaway in the system that controls the temperature of the solid surface, solid interior, gas, etc. to be controlled and signs of accidents, or is not under surveillance by the user It is possible to easily obtain data that is very important in understanding the history of abnormalities and diagnosing and discovering the cause early.

  Further, since it is possible to use a portable terminal that is widely spread in the market and can recognize a typical QR code (registered trademark) as a two-dimensional code, it is possible to provide a system that is easy to use and is supported by many users.

  Next, a modified example of the signal converter will be described with reference to FIG. 6, but the same components as those described above are denoted by the same reference numerals and description thereof is omitted.

  In addition to the configuration described above, the signal converter 25 is provided with a trigger signal input unit 230. When a predetermined trigger signal is input to the trigger signal input unit 230, the type of the trigger signal is determined, Depending on the type of the trigger signal, either the display of the measurement data is left as it is or the predetermined data converted into a QR code is displayed, and the screen display content is switched by the switching unit 231.

  Further, the trigger signal input unit 230 includes a trigger signal input unit 230A and a trigger signal input unit 230B as shown in FIG. 8A, and displays a measurement data by determining a relative difference between the two. Is selected, or predetermined data converted into a QR code is displayed, and a predetermined signal is output to the switching unit 231 at the next stage.

  Depending on the type of the trigger signal, in other words, the magnitude relationship between the light amount input to the trigger signal input unit 230A and the light amount input to the trigger signal input unit 230B, the maximum temperature and the minimum temperature stored in the memory unit 205 are determined. The alarm ON time is reset to the default value.

  FIG. 7 is a flowchart showing a process performed when the type of the trigger signal (the magnitude relationship of the amount of received light) input by the trigger signal input unit 230 is determined and the type is determined.

  After the signal converter 25 is turned on, real-time measurement data is displayed (S41), it is determined whether there is a trigger signal input (whether there is a relative difference) (S42), and the trigger signal is input. If not, the process returns to the step before displaying the measurement data (S41). If there is a trigger signal input, the trigger A input to the trigger signal input unit 230A and the trigger input to the trigger signal input unit 230B shown in FIG. B is compared (S43).

  If the trigger A is larger than the trigger B, the displayed measurement data is erased (S44), the liquid crystal backlight is turned on (S45), and the predetermined data stored in the memory unit 205 is changed to QR. The code is converted (S46), the QR code is displayed for a predetermined time (S47), the liquid crystal backlight is turned off (S48), and the process returns to the step before displaying the measurement data (S41).

  On the other hand, the trigger A input to the trigger signal input unit 230A and the trigger B input to the trigger signal input unit 230B are compared (S43), and if the trigger A is smaller than the trigger B, the maximum temperature, the minimum The temperature and alarm ON time are reset to the default values (S49), and the process returns to the step before the measurement data display (S41).

  Here, as described with reference to FIG. 8A, the trigger signal input unit 230A is disposed on the right side of the front panel, and the trigger signal input unit 230B is disposed on the left side.

  In order to detect the amount of received light, for example, a photosensor such as a photodiode, a phototransistor, or a CdS cell is selected and mounted as the light receiving unit of the trigger signal input unit 230A and the trigger signal input unit 230B. When performing treatment, it is sufficient to irradiate only one of them with light such as a penlight or a laser pointer.

  Thereby, the trigger A that is the amount of light received from the light receiving unit of the trigger signal input unit 230A and the trigger B that is the amount of light received from the light receiving unit of the trigger signal input unit 230B, which corresponds to the step of S43 described above. A determination is made whether the relative difference exceeds a predetermined threshold.

  FIG. 8B shows the state of the treatment content of S47 in FIG. 7, in which the QR code 235 is displayed on the liquid crystal display unit 204 for a predetermined time.

  Here, the display magnification of the QR code 235 displayed on the liquid crystal display unit 204 may be changed and displayed at intervals of about several seconds for each display magnification.

  As described above, according to the modification of the signal converter, only the numerical data is displayed during normal operation, and only when the user needs to acquire, store, and transmit predetermined specific data, Since the code can be displayed on the display unit, the limited area of the liquid crystal display unit can be used efficiently, and there is no need to provide a large liquid crystal display unit in the instrumentation device.

  In addition, when the user desires, the predetermined data acquired up to that time can be once cleared and acquisition of new predetermined specific data can be started. The specific data can be acquired, recorded, and transmitted, so that quick process repair can be realized easily.

  Further, when a predetermined trigger signal is input from the outside to the instrumentation device, the illumination unit of the display unit emits light, and the instrumentation device is irradiated with the image of the two-dimensional code displayed on the display unit. Even in an atmosphere where it is difficult to visually recognize the screen of the display unit due to the dark surroundings where the display is installed, the decoder unit can easily recognize the image in the camera unit of the receiving device. Can be decrypted.

  In addition, when a predetermined trigger signal is input from the outside to the instrumentation device, the display magnification of the two-dimensional code displayed on the display unit is changed and displayed at a predetermined time interval to display the two-dimensional code. Even if the distance between the display unit of the instrumentation device and the camera unit of the receiving device changes every time the image data is recognized, image data of an appropriate size necessary for recognition can be obtained in the recognition area of the camera unit. Therefore, measurement data can be easily acquired by improving the camera recognizability of the two-dimensional code.

  In addition, a predetermined trigger signal is input when the relative difference in the amount of light received from a plurality of trigger input units provided in the instrumentation device exceeds a predetermined threshold, thereby allowing the user to measure the predetermined trigger signal. A desired function can be obtained without directly accessing the equipment.

  Next, using FIG. 9 and FIG. 10, a modified example of the measurement value management system using the signal converter in the embodiment of the present invention described above will be described. The same reference numerals are given and description thereof is omitted.

  As shown in FIG. 9, the QR code 451 displayed on the signal converter 45 subjected to the explosion-proof processing by the explosion-proof case 46 is photographed by the imaging camera 51, and similarly, the explosion-proof case 48 performs the explosion-proof processing. The QR code 471 displayed on the signal converter 47 is photographed by the imaging camera 52, and the QR code 491 displayed on the signal converter 49 subjected to the explosion-proof processing by the explosion-proof case 50 is photographed by the imaging camera 53. Although not shown, the QR codes of the other three signal converters are also photographed in the same manner.

  The QR code images captured by the six imaging cameras in total are transmitted to the PC 55 via the signal cable 54, and the same processing as that performed inside the mobile phone 30 described above is performed in the PC 55. The liquid crystal display unit 551 displays the historical data of the six signal converters as a list of readable character data.

  FIG. 10 shows a state where the historical data of the six signal converters is displayed in a list on the liquid crystal display unit 551.

  According to such a configuration, particularly when a large number of measurement points are required in a system device that controls the temperature of a solid surface, solid interior, gas, or the like to be controlled, and the number of instrumentation devices to be managed is large. Even in such a case, not only can the number of management man-hours be reduced, but if an environment in which an imaging camera is always installed to obtain a two-dimensional code is prepared, it is possible to completely unmanned.

  Further, the obtained six historical data are processed using the function of the central processing unit (not shown) of the PC 55, and the maximum temperature value, the minimum temperature value, the intermediate temperature value, etc. are displayed in graphic form for comparison. This makes it possible to easily process the acquired measurement data and display an average value, a variance value, a transition graph, and the like.

  That is, statistical processing of the acquired measurement data is facilitated, and rapid and highly accurate measurement value management of a system that performs temperature control of the solid surface, solid interior, gas, and the like to be controlled can be realized.

  Further, in the present embodiment, when the predetermined specific data is historical data, only the mode of acquiring the specific data has been described. However, the predetermined specific data may be an instantaneous value or an integrated value of the measurement data.

  If the specified specific data is the instantaneous value of the measurement data, real-time measurement data that follows changes in the physical quantity to be controlled can be easily acquired, stored, and transmitted, and this data can be used and managed quickly. Correspondence becomes possible.

  Further, if the predetermined specific data is an integrated value, for example, a wattmeter that serves as a measuring means even if the object to be controlled is a consumption amount of resource energy such as electric power, gas, clean water, supply heat, and hot water supply By introducing a measurement value management system using an instrument with an indicator according to the present invention to gas flow meters, water flow meters, calorimeters, hot water meters, etc., energy supply companies and local governments Therefore, the consumption amount can be easily grasped, so that the cost billing system for consumers can be made more efficient.

  The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. The technical scope disclosed in different embodiments, respectively. Modifications of the embodiment obtained by appropriately combining the means are also included in the technical scope of the present invention.

  Further, in this embodiment, only the case of temperature sensing and temperature management as physical quantity sensing has been described. However, other physical quantities such as pressure, luminous intensity, flow rate, and water level, or current, electricity, voltage, electrostatic Any physical quantity that can be obtained by sensing an electrical signal, such as a physical quantity related to electricity or magnetism such as capacitance, magnetic field, magnetic flux density, inductance, electrical resistance, conductance, reactive power, etc. It can be similarly applied by selecting a corresponding sensor unit.

  The measurement value management system using the instrumentation device with a display of the present invention is useful because the measurement value management in the instrumentation device that performs conversion, display, alarm output, etc. of the measurement signal can be easily performed with a simple configuration. It is.

DESCRIPTION OF SYMBOLS 10 Sensor part 20 Signal converter 25 Signal converter 30 Mobile telephone 31 Operation part housing | casing 32 Display part housing | casing 33 Hinge part 45 Signal converter 46 Explosion-proof case 47 Signal converter 48 Explosion-proof case 49 Signal converter 50 Explosion-proof case 51 Imaging Camera 52 Imaging camera 53 Imaging camera 54 Signal cable 55 PC
201 Input processing unit 202 Signal conversion unit 203 Digital arithmetic circuit unit 204 Liquid crystal display unit 205 Memory unit 206 Encoder unit 207 Relay 208 NO terminal 209 NC terminal 210 COM terminal 220 MODE button 221 SET button 222 UP button 223 DOWN button 224 Storage unit 225 QR code 226 Threshold setting value 230 Trigger signal input unit 230A Trigger signal input unit 230B Trigger signal input unit 231 Switching unit 235 QR code 301 Camera unit 302 Analog signal processing unit 303 A / D conversion unit 304 Digital signal processing unit 305 Decoder unit 306 Liquid crystal display unit 307 Internal memory unit 308 Operation unit 451 QR code 471 QR code 491 QR code 551 Liquid crystal display unit

Claims (10)

A sensor unit that senses a physical quantity, an input processing unit that performs predetermined input processing using an electrical signal acquired from the sensor unit as an input, and a signal that converts an output signal of the input processing unit into a unified signal within a predetermined range A conversion unit; an arithmetic processing unit that performs A / D conversion on the unified signal output from the signal conversion unit to perform predetermined output calculation processing; and character data is displayed according to binary data output from the calculation processing unit An instrumentation device comprising: a display unit configured to store; a memory unit that stores predetermined specific data extracted by the arithmetic processing unit; and an encoder unit that encodes the data stored in the memory unit into a two-dimensional code; ,
A camera unit capable of recognizing a two-dimensional code displayed on the display unit of the instrumentation device; and a decoder unit configured to decode the two-dimensional code recognized via the camera unit into readable character data. A receiving device;
A measurement value management system using an instrument with a display equipped with
The image of the two-dimensional code converted by the encoder unit of the instrumentation device is displayed on the display unit of the instrumentation device, the image is recognized by the camera unit of the reception device, and decoded by the decoder unit, and the predetermined unit A measurement value management system using instrumented equipment with a display, characterized by acquiring readable character data corresponding to the specific data. The measured value management system using an instrument with a display according to claim 1, wherein the predetermined specific data includes an instantaneous value or an integrated value of data acquired through the sensor unit. The predetermined specific data includes measured value information of either the input maximum value or the input minimum value, or event information of alarm output, loop check, power ON, or power OFF, and occurrence time information of the information. The measured value management system using the instrumentation equipment with a display of Claim 1 or 2 characterized by including the historical data which made a pair. 2. When a predetermined trigger signal is input from the outside, predetermined specific data stored in the memory unit is encoded into a two-dimensional code and displayed on a display unit of the instrumentation device. The measured value management system using the instrumentation apparatus with a display of any one of Claim 3. The predetermined specific data stored in the memory unit is cleared and set as default data when a predetermined trigger signal is input from the outside. 5. Measurement value management system using instrumentation equipment with a display as described in 1. The illumination unit of the display unit emits light and emits an image of the two-dimensional code displayed on the display unit when a predetermined trigger signal is input from the outside. 6. A measurement value management system using the instrumentation device with a display according to any one of 5 above. 7. When a predetermined trigger signal is inputted from outside, the display magnification of the image of the two-dimensional code displayed on the display unit is changed and displayed at predetermined time intervals. The measured value management system using the instrumentation apparatus with a display of any one of. The input of the predetermined trigger signal is performed when a relative difference in the amount of light received from a plurality of trigger input units provided in the instrumentation device exceeds a predetermined threshold value. The measured value management system using the instrumentation equipment with a display of any one of Claims 4-7. The said receiving apparatus is a portable terminal device which has a camera function which can recognize the two-dimensional code displayed on the display part of the said instrumentation apparatus, The any one of Claims 1-8 characterized by the above-mentioned. Measurement value management system using instrumented equipment with a display. The receiving device is a PC having an imaging camera function capable of recognizing a two-dimensional code displayed on a display unit of the instrumentation device, and is a character obtained by decoding one or more two-dimensional codes of the instrumentation device The measurement value management system using the display-equipped instrument according to any one of claims 1 to 8, further comprising a display unit that displays data.

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