JP2970495B2 - Recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recording and / or displaying a physical quantity of an object to be measured.
The present invention relates to a recording apparatus in which the units are connected by a communication cable to improve the degree of freedom of expansion / reduction of functions.

[0001]

2. Description of the Related Art FIG. 7 is a block diagram showing a conventional example of a hybrid recorder. In the figure, a portion indicated by A is an analog portion including an input terminal portion 1, a multiplexer 2 functioning as a scanner, an A / D converter 3, and the like.
The portions indicated by are the two microprocessors 4a and 4b, the memories 5a and 5b, the key display interface 6,
An arithmetic control unit including an alarm interface 7, a communication interface 8, and the like.
The recording unit includes a relay output 11, various drivers 12 for recording, and the like.

A measuring signal inputted to an input terminal 1 of the recorder is sequentially selected point by point by a scanner 2 and A / D conversion is performed by an analog section A in accordance with a preset measuring range.
Is converted. This data is sent to the arithmetic control unit B, subjected to processing such as linearization, scaling, and alarm calculation according to the type of input, converted into display data and recording data, and stored in the memories 5a and 5b. The recording data is
Each of the analog and the print is converted so as to correspond to the recording position. These controls are performed by the first microprocessor 4a.

Recording is performed by, for example, a raster scan method. Each time the print head moves from one end of the recording paper to the other in a predetermined step, the microprocessor 4b refers to the recording data. The solenoid of the print head is excited to hit the dot. This operation is repeated, and when the head reaches the other end, one scan ends.

FIG. 8 is a block diagram showing such a hybrid recorder for each functional block. An input terminal 1, a multiplexer 2, an A / D converter 3, a microprocessor 4, a print processor 12, and an alarm output unit 7 are shown. , A general-purpose communication function 13 and a remote communication function 8 are formed for each block, and these are housed in one housing. FIG.
(A), (b) is the front view and side view which show the general mounting state of a recorder. As shown in the figure, the recorder main body 98 is inserted into the cut hole of the panel 100 and is supported by the support 99.

[0005]

By the way, in the above-mentioned conventional recording apparatus, the input module comprises an input terminal 1, a multiplexer 2, and an A / D converter 3.
The output module is composed of the alarm output terminal unit 11, the alarm output unit 7, and the like, but the configuration is fixed, and it is difficult to freely change the enlargement / reduction of the function. For example, when it is necessary to increase or decrease the number of terminals for input and alarm, it is necessary to change the design of the housing.

Each unit is composed of a microprocessor 4
However, since the electrical specifications are different between the multiplexer control signal and the input signal for data input and the output signal for data output, for example, the analog input is removed and the alarm output is added to that part You can't do that.

Each unit is composed of a microprocessor 4
, And must be arranged in the same housing. For example, it is not possible to install only one analog input block away from the housing. As a result, there is a problem that the specification change is limited.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the apparatus is divided into functional units, which can be attached and detached, and each unit is connected by a communication cable. An input having communication means for converting measurement signals from a plurality of objects to be measured into digital signals and transmitting the digital signals, with the object of realizing a recording apparatus in which the degree of freedom of expansion / reduction of functions is improved. An operation / communication means having a unit and a plurality of connectors of the same standard to which the input unit can be attached, having position information based on the attachment position of the connector, collecting the measurement signal and performing arithmetic processing, and the operation thereof A mounting plate having storage means for storing results, and a control unit for performing signal processing and recording by using the measurement signals stored in the storage means of the mounting plate. Made, the control unit, collected
Communicates with the arithmetic communication means on the attachment plate via a communication cable
And confirm the entire configuration according to the response from the mounting plate.
It is characterized by having a function to recognize

[0009]

The at least one input unit fixed to the mounting plate performs A / D conversion of the measured analog signals input from the plurality of channels, and sends out the converted analog signals to the mounting plate via the communication unit. The mounting plate performs linearization, scaling, alarm calculation on the received measurement signal and sends it to the control unit. The control unit prints and / or displays the signal sent from the mounting plate, or both. An alarm output unit having communication means in addition to the input unit, an analog output unit, a communication relay unit, a general-purpose communication unit, a power supply unit, and the like can be selectively mounted on the mounting plate. The mounting plate can be fixed to the control unit or can be arranged at a remote location via a cable, and the number of input units can be increased or decreased, so that a small-scale or large-scale instrumentation can have a degree of freedom.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the configuration of an embodiment of the recording apparatus of the present invention. In the figure, reference numeral 30 denotes a control unit (recording apparatus main body), which has a printing function and / or a display function on the front side, although not shown. Reference numeral 31a denotes a mounting plate on which a power supply unit 32a, an alarm output unit 33, and a general-purpose communication unit 34 are mounted, and two input units 35a and 35b are mounted.

Reference numeral 31b denotes a mounting plate.
A plurality of input units 35, for example, an AC input unit 35d for measuring power, and a communication / power supply unit 36 in which a communication unit and a power supply unit are integrated are mounted. Each of these units is housed in a unified casing of the same size, and is mounted on a mounting plate via a connector 37 of a unified standard. Communication / power supply unit 36
Communicates with the control unit 30 via the communication cable 70. 39 is a power supply terminal of the control unit.

FIG. 2 shows the configuration of an input unit for each functional block. Reference numeral 1 denotes an input terminal unit, 2 denotes a multiplexer, and 3 denotes an A / D converter. The A / D converter shown here has a multiplexer. And a control unit for controlling the A / D converter itself and transmitting the converted digital signal. 3
5x is a case for storing them, and this case 35
At x, a connector 37 for electrical / mechanical connection to the mounting plate 31 is mounted.

FIG. 3 shows three input units 3 on a mounting plate 31.
5 is a perspective view showing a state in which a communication unit 5 and a communication / power supply unit 36 are mounted, and these units are fixed to the mounting plate 31 by a connector 37 having standardized specifications.

FIG. 4 is a block diagram showing an embodiment of the electrical connection of the recording apparatus according to the present invention. In this embodiment, an input unit 35, an alarm output unit 33, and a general-purpose communication unit 34 are mounted on a mounting plate 31. An example is shown. The mounting plate 31 has an arithmetic / communication unit 361. After performing a process such as a format operation and a linearize operation of the measurement signal taken in by the microprocessor 360, the main communication unit described later is executed by the communication unit 36. 60.

A control unit 30 includes a measuring unit 58 and a print / display processing unit 64.
8 transmits a command from the main control unit 61 to the communication unit 36 of the mounting plate 31. Main controller 6
1 performs, for example, setting of a sampling cycle and a measurement range of each input unit, or various controls for printing and displaying according to a control program stored in the ROM 62. Reference numeral 63 denotes a RAM for collecting measurement data.

A communication cable 70 has one end connected to the main communication section 60 and the other end connected to the arithmetic / communication unit 361 of the mounting plate 31. The operation / communication unit 361 is composed of a microprocessor 360 and communication means 36a.
And is connected by a communication line 38 to the alarm output unit 33 and the communication unit 36b of the general-purpose communication unit. Then, a unique address is given by the number of the mounting plate 31 and the mounting position, and each unit constantly monitors a signal transmitted from the communication cable 70 via the communication line 38, and when communication with its own address is started. Respond to the communication.

Next, the operation will be described with reference to FIG.
First, the mounting plate 31 sequentially communicates with all addresses on the communication line, and discriminates between addresses having a response and addresses having no response. Then, an instruction is issued to report the type of the unit to the address with the response, and the configuration on the mounting plate 31 is grasped by the response.

Further, the main control unit 61 sequentially communicates with all the mounting plates 31 on the communication cable 70, instructs to report the configuration on the mounting plate, and grasps the configuration of the entire system based on the response. I do.

A plurality of signals from the object to be measured are connected to an input terminal unit 1 of an input unit, selected by a multiplexer 2 at a predetermined timing, and then output to a preamplifier 3a, A
It is converted into a digital value by the / D converter 3. The control unit 3b controls the multiplexer 2 and the A / D converter 3, and
The / D-converted digital signal is output to the communication line 38 via the communication unit 36b.

The mounting plate 31 calls out an input unit to which a measurement signal to be taken is input via a communication line 38,
Command to send a measurement signal. Then, the taken-in signal is subjected to arithmetic processing by the microprocessor 360 and sent out to the communication cable 70 via the communication unit 36a. The mounting plate is a storage device that stores the calculation results.
It has a step .

The main control unit 61 controls the mounting plate 3 via the main communication unit 60 in accordance with the control program stored in the ROM 62.
1 and instructs to transmit a measurement signal. The taken-in signal is stored in the RAM 63. The stored signal is subjected to arithmetic processing by the main control unit 61 according to a control program stored in the ROM 62, sent to the printing / display means 64, and displayed on a printer and / or a screen. Note that the measurement target printed / displayed is not necessarily all but a selected part.

As a result of the calculation, for example, if the numerical value of a certain measurement object exceeds a certain value, the main control unit 61 communicates via the main communication unit 60 → the mounting plate 31 → the communication unit 36 of the alarm output unit 40. Give an alarm command. The drive unit 65 drives the contacts based on the command, and issues an alarm via the connector 11.

When it is desired to transmit the result of the operation, that is, the result of a certain measurement object to, for example, an external personal computer 40, the main control unit 61 transmits the main communication unit 60 → the mounting plate 31 → the general-purpose communication unit 3.
4 is output from the input / output connector 52 via the communication unit 36 → the control unit 3b ′ → the interface circuit 51.

The number of units to be mounted on the mounting plate 31 can be easily removed by using a connector 37 (see FIG. 3) having a uniform unit size. Can be freely expanded or reduced.

FIG. 5 shows an example in which a number of input units are connected using a communication cable 70.
The four input units 35a are attached to a, and are connected from the operation / communication unit 361a of the attachment plate 31a to the input unit 361b attached to the next attachment plate 31b via the communication cable 70a. As described above, by connecting a large number of mounting plates with the communication cable, the system can be freely expanded or reduced.

By the way, in the above embodiment, the expansion of the input unit using the communication unit has been described. However, as shown in FIGS. 6 (a) and 6 (b), the control unit 30 includes the measurement unit 58 and the display unit 64a. It is also possible to configure in a separate form. In FIG. 6A, 90
Is a display means. The display means is a power supply 91, a display 9
2, a receiving unit + a display control unit 93, which are housed in a display case 95 and are provided with a display unit 64a.
Is composed. 6B, reference numeral 58 denotes a measurement unit, which includes a main communication unit 60 and a main control unit 6 shown in FIG.
1, ROM62, RAM63, input units, and other devices necessary for measurement are stored. Reference numeral 70 denotes a communication cable for connecting the receiving unit of the display unit and the main communication unit 60 of the measuring unit.

According to the above configuration, as the display unit 64a, it is only necessary to incorporate the receiving unit and the display control unit in addition to the power supply and the display into the display case 95, so that the case can be made smaller, thinner, and lighter. Becomes As a result, remote data can be transmitted at low cost by connecting the units by digital communication having a speed sufficient for updating data. In addition, since the display unit can be reduced in size and thickness, it has conventionally been necessary to make a hole in the panel and fix the recorder main body to the support base. .

A configuration in which the power supply and the display control unit in the display unit are arranged on the measurement unit side and only the display 92 is housed in the display unit is also conceivable.
Since the signal transmission between each unit is a high-speed image signal,
The transmission distance is limited or expensive.
In this embodiment, the mounting plate 31 is connected to the control unit by a communication cable. However, the communication cable is cut off, and only the mounting plate is installed near the object to be measured and used as a data collection device. Is also possible.

[0029]

As described above, according to the present invention,
A plurality of connectors of the same standard to which a plurality of input units can be attached, a plurality of connectors having position information based on the attachment positions, an arithmetic / communication means for collecting the measurement signals and performing arithmetic processing, and storing the arithmetic results. Since the mounting plate is provided with a storage means for storing the input unit, the input unit can be easily attached and detached, and the number of input units can be expanded or reduced. Then, since this mounting plate can be directly mounted on the recorder main body or can be arranged at a remote place and connected by a communication cable, small-scale or large-scale dispersion measurement can be performed.
Further, since the input unit is detachable, the input signal lines can be connected to the input / output force terminals after the input unit is detached, and then attached to the mounting plate, thereby facilitating wiring work. Further, by providing the display unit independently from the recorder main body and connecting the display unit with the communication cable, the degree of freedom of the installation location of the display unit can be increased.

[Brief description of the drawings]

FIG. 1 is a configuration perspective view showing one embodiment of a recording apparatus of the present invention.

FIG. 2 is a configuration diagram showing an input unit for each functional block.

FIG. 3 is a perspective view showing a state where an input unit and a communication / power supply unit are mounted on a mounting plate.

FIG. 4 is a block diagram showing an embodiment of an electrical connection of the recording apparatus.

FIG. 5 is a diagram illustrating a connection state with a communication cable when each unit is mounted on a mounting plate.

FIG. 6 is an explanatory diagram showing one embodiment in which a display unit is provided independently.

FIG. 7 is a configuration diagram showing a conventional example of a recording apparatus.

FIG. 8 is a configuration diagram showing a recorder for each functional block.

FIG. 9 is a front view and a side view showing a general mounting state of the recorder.

[Explanation of symbols]

 1, 37 input terminal (connector) 2 multiplexer (scanner) 3 A / D converter 4 microprocessor 5 memory 6 key display interface 7 alarm interface (alarm output unit) 8 communication interface (remote communication function) 10 key display 11 relay Output (alarm output connector) 12 Print / display processing unit 13 General-purpose communication function 30 Control unit (recording device main body) 31 Mounting plate 32, 91 Power supply 33 Alarm output unit 34 General-purpose communication unit 35 Input unit 36 Communication / power supply unit 361 Calculation / Communication unit 38 Communication line 39 Power supply terminal 58 Measurement unit 60 Main communication unit 61 Main control unit 62 ROM 63 RAM 64 Printing / display processing unit 64a Display unit 70 Communication cable 90 Display means 92 Display 93 Display control + communication section 95 case

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G01D 9/00 G01D 15/00 G01D 21/00

Claims (7)

(57) [Claims] 1. An input unit having communication means for converting measurement signals from a plurality of measurement objects into digital signals and transmitting the digital signals, and a plurality of connectors of the same standard to which the input units can be attached. A mounting plate having position information based on the mounting position of the connector, having an operation / communication means for collecting the measurement signals and performing arithmetic processing, and a storage means for storing the operation result; and a storage means for the mounting plate. using the stored the measurement signal consists of a control unit for performing recording performs signal processing, the control unit, passing between the computing communication means of the mounting plate
Communication via the communication cable and response from the mounting plate
A recording device having a function of recognizing the entire configuration according to the information . 2. The control unit comprises a measuring unit and a display unit. The display unit comprises a power source, a display, a display control unit, and a receiving unit. The communication unit between the measuring unit and the display unit is a communication cable. 2. The recording apparatus according to claim 1, wherein the recording apparatus is connected by: 3. The recording apparatus according to claim 1, wherein an input / output unit for communicating with another device and an alarm unit are selectively attached to the connector of the attachment plate. 4. The recording apparatus according to claim 1, wherein said mounting plate is fixed to said control unit. 5. A recording apparatus according to claim 1, wherein said mounting plate is set apart from said control unit, and said control unit and said arithmetic and communication means of said mounting plate are connected by a communication cable. 6. provided a plurality of said mounting plate, fixed to at least one of the plurality of mounting plate to the control unit, placed away other mounting plate from the control unit, wherein
2. The recording apparatus according to claim 1 , wherein the arithmetic and communication means of the plurality of mounting plates are connected by a communication cable. 7. The apparatus according to claim 1, wherein at least one of said plurality of mounting plates is fixed to said control unit, another mounting plate is installed separately from said control unit, and said arithmetic / communication means is connected by a communication cable. The recording apparatus according to claim 1, wherein: [0000]