CH645719A5 - Method and device for measuring, recording and evaluating physical measurements. - Google Patents

Description

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PATENT CLAIMS a data reduction controlled by the adapter (10)

1. A method for recording, recording and evaluating device (25) for preprocessing the digital signal (22) supplied by the A / D converter by means of a measuring sensor (1) via any (4) contains measured values of physical quantities determined for the input of the period , shaped data signals to the switching device (26). by means of which an electrical analog signal is generated in the sensor. 5. The device as claimed in claim 3, characterized in that it comprises the steps of converting the analog signal supplied by the sensor to the A / D converter (4) of the data receiving unit (3) a digital signal, transfer range selection memory (24) is assigned to determine the measuring range of the digital signal at time intervals and / or on the basis of the measuring sensor (1).

an exceeded threshold value in a storage unit 6. Device according to claim 5, characterized in

(7) for the purpose of storing a digital measured value signal, and i0 that the range selection memory (24) has a range selection

the connection (23 ') which is independent of this measurement value storage is connected to the adaptation unit (10).

Calling the measured value signals from the memory unit and 7. Device according to claim 3, characterized in

feeding the measured value signals to an evaluation unit that the data output devices of the adaptation unit (10)

(11), characterized in that at the output of a digital / analog converter (43) and / or a parallel

Analog-digital (A / D) converter (4) adjacent digital 15 serial signal converter (45).

Measured value signals are fed to a logic circuit (6) controlled by clocking means (5) and read commands (28),

The clocking means (5) actuates a programmable device (31) for generating write commands (27). The invention relates to a method and a device for the logic circuit (6) to record, record and evaluate physical data based on the write commands 20 - (27) the conversion of the above-mentioned measured value signals into a see measured data in accordance with the generic terms of the Patentan measured value memory (7A) of the memory unit (7), claims 1 and 3.

that the logic circuit (6), based on the read commands (28), for retrieving physical measurement data from the temperature unit evaluation unit (11), retrieving data, electrical variables, air pressure, moisture and data storage (7B) from the storage unit (7). stored measurement identifiers for the purpose of displaying, monitoring and evaluating sensor characteristic data signals and the measured value signals and the physical relationships, it is known to use sensors to transfer the characteristic data and measured value signals to an adapter or to adapt the acquired measured data or adaptation unit (10). and that convert the measured values into electrical signals. The obtained characteristic data and measured value signals in electrical signals can, after appropriate processing of this unit, optionally be directed to a number of output channels 30 and amplification e.g. in an analog recorder, one (43 ', 44, 46) to be recorded or stored in the evaluation unit (11) in order to assign these signals to predetermined printers or on magnetic tape etc. or other storage means. It is common to run out. . For reasons of cost, several sensors, the same or different

2. The method according to claim 1, characterized in that different types of measurement data are assigned to a measurement that the analog signals of the sensor (1) are to be fired independently of the data recording device. For special the adaptation unit (10) and the evaluation unit (11) via a high-temperature measurement task, solid-state sensor lines (2) have become known the A / D converter (4), the clocking memory, which, however, is only an analog one From the means (5), the logic circuit (6) and the memory unit supply the output signal.

(7) containing data receiving unit (3), which are recorded in a measurement data recording device

and that the data receiving unit (3) by means of a multi-40 drawn or stored data are previously preferred

Special plug-in contact arrangement (9.9 ') with the adapter unit (10) manually, by direct reading or with electronic

evaluated for the purpose of entering characteristic data signals in the characteristic data processing (EDP) means.

Memory (7B) and retrieval of characteristic data signals from the known measurement data recording devices

Characteristic data memory (7B) and measured value signals from the, however, have a number of different disadvantages.

Measured value memory (7A) is connected. 45 Because the individual sensors, depending on the physical

3. A device for carrying out the method according to the lische size of the electrical claim 2, which differs greatly from one another, with a data receiving unit (3) which provide means (7; output signals are in many cases complex adaptations 7A, 7B) for programmed storage in a digital network and amplifier This is necessary so that the analog signal of the sensor (1) converted into the respective signal keeps the signal in a form suitable for data evaluation and can be brought about by means of a multiple plug contact arrangement (9,9 '). This signal adaptation requires a special temporary connection to the adaptation unit (10), the cial knowledge in the relevant measurement technology, which is why data reception unit (3) a logic circuit (6, FIG. 2) often occurs with errors.

a switching device (26), which firstly, for cost reasons, it is common to store several sensors each of the digital arriving from the A / D converter (4) to a multi-channel data acquisition system (2 to 100 or signal (22) on the basis of a clock-controlled write command (27) 55 more channels). For this purpose, the input channels must be set up in a measured value memory (7A), and secondly in the case of channels depending on the process to be monitored (production-switched connection between the data reception process, recording of environmental data, etc.) on the sensor unit (3) and the Adaptation unit (10) can be adapted on the basis of a wide variety of types. This requires a flexible last unit entered into the logic circuit (6) reading and thus expensive matching electronics, the complicated manual command (28) of which a data channel connection (29/30) with the usage is often the reason for measurement and reading errors. In addition, the fitting unit (10) produces, and that the adapter unit (10) is usually an expensive and fault-sensitive sensor connection control logic (41) required for the optional switching of the input lines.

side data channel (30) to a number of data output. The data acquisition systems available today are pre-

Devices (43, 44, 45) and switching means (23 ', 28, 34, 43') are designed for the direct or indirect input of recording variables or measuring points or input channels for the reception of large amounts of data per sensor and require bien in the data receiving unit (3) contains. therefor registration means such as printers, analog recorders or

4. Device according to claim 3, characterized in that magnetic tape recording means with a large number of sensitive logic components (6) of the data receiving unit (3) which do not meet the tough requirements.

are sufficient and therefore unreliable. In addition, they can be unsuitable for mobile purposes due to their large size. If the data is only recorded in analog form, as is the case with inexpensive data acquisition systems using analog recorders, the data can only be converted into an EDP-compatible form with great effort and evaluated in an EDP device. Furthermore, the electrical power requirement of such data acquisition systems is often so great that battery operation that is independent of external power sources and is therefore in many cases inexpensive and very reliable is at least difficult.

The aim of the invention is to propose a method for recording and evaluating physical measurement data by means of which the disadvantages mentioned can be avoided. In order to carry out this method, a device is to be created which is easy to transport and takes up little space, is easy to use, provides EDP-compatible data, works reliably and is inexpensive to manufacture.

The object of the invention is achieved by a method and a device, the characteristics of which are evident from patent claims 1 and 3. Embodiments thereof are defined by the respective dependent claims.

A preferred embodiment of the invention is explained below with reference to the drawing, for example. It shows

1 is a block diagram of the device according to the invention,

Fig. 2 is a block diagram of the logic circuit of Fig. 1 with more details, and

Fig. 3 is a block diagram of the adapter with more details.

In Fig. 1, 1 denotes a sensor for detecting physical. mical data such as temperature values, pressure values (sound pressure, barometer reading), electrical measurement variables etc. 2 denotes a connecting line between the sensor 1 and a data receiving unit 3, the connecting line 2 being detachably connected to an input terminal or to a plug contact 2 'which / which is connected via the internal feed line 2 "to an analog-digital converter (A / D converter) 4. In the latter, the analog input signal is converted into a digital signal.

The data reception unit 3 also contains a time base 5 for generating a clock signal for the purpose of defining the intervals for data transfer from the sensor 1, and a logic circuit 6 for the data transfer to a storage unit 7. The time base can be designed as a multivibrator circuit with quartz stabilization and, if necessary, its own coaster. The storage unit 7 contains a measured value memory 7A, in which periodically incoming measured values are digitally stored, and a characteristic data memory 7B, in which the specific characteristic data of the sensor 1 are recorded.

The memory locations of both the measured value memory and the characteristic data memory are preferably solid-state memories in order to accommodate a large number of memory locations in a small space.

The memory unit 7 is assigned a preferably digital display device 7C for displaying the degree of occupancy of the measured value memory 7A.

The data reception unit 3 is expediently housed in a closed housing, also protected against harsh environmental influences, and can be designed as a portable device. The switching, converter * and storage means housed in this housing are operated by an on-board (primary or secondary) battery 8, so that the installation of the device is not tied to any external power source.

Through the terminal connections 2 'for the sensor leads 2

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it is possible to design the data receiving unit 3 as an exchange device which can be periodically connected to an evaluation unit 11 which is not part of the invention for the purpose of evaluating the data contained in the measured value memory 7A or as required via an adaptation unit 10 described later. However, the sensor 1 can also be permanently attached to the above-mentioned device housing and connected by means of a signal line 2 leading directly to the A / D converter 4 or can be integrated directly into the housing.

For the connection of the data receiving unit 3 to the adapter unit 10, which is preferably connected to the evaluation unit 11 via fixed lines 12, a commercially available multiple plug contact arrangement 9, 9 'can be provided.

15 The essential circuit elements of the logic circuit 6, which causes the measured values and characteristic data to be stored in the memory unit 7 or its memory 7A, 7B and the output of the related storages, can be seen from FIG. 2. The connection, also designated 21 in FIG. 1, between the A / D converter 4 and the logic circuit 6 contains a data channel 22 and an area selection channel 23, which is fed by an area selection memory 24. The area selection memory 24 is preprogrammed via the line 23 ', which is switched through by the evaluation unit 11 via the adaptation unit 10.

In embodiments of the data receiving unit 3 with means for reducing the data to be stored according to certain programs, to which reference will be made later, the data channel 22 passes through a data reduction memory 3o 25, in which e.g. a selection or combination of the data to be input to a data channel switch 26 is made. The desired selection or combination program is entered into memory 25 via line 25 '. The changeover switch 26 is used to switch the data channel 22 to the data channel 29 leading to the storage unit 7 if there is a write command on the line 27, or to the data channel 30 leading to the matching unit 10 if there is a read command on the line 28. If none of these command signals is at the changeover switch 26, the changeover switch 26 blocks 40 the data transmission.

The write command on line 27, which becomes effective only when measurement data is present at the data channel switch 26, is supplied by a programmable counter 31, which is controlled by the time base 5. At the same time, the 45 write command via line 27 'is also at an address counter 32, which instructs the memory location in the memory unit 7 or in the measured value memory 7A via the address channel 33. The preferably digital display device 7C (FIG. 1) for occupying the measured value memory 7A in the memory unit 7 is also actuated via the address counter 32.

The program is entered into the programmable counter 31 via the interval selection line 34, which is connected through the adapter unit 10 to the evaluation unit 11 and is fed from there.

In cases where the data receiving unit 3 contains a data reduction memory 25, there is a connection 25 "between the memory 25 and the programmable counter 31, via which a control signal is input to the counter 31 in the presence of a" reduced "data signal its output to generate a write command.

The read command entered by the evaluation unit 11 via the adapter unit 10 on the line 28 to the logic circuit 6 is also present via the branch 28 'at the address counter 32, which also defines the desired memory location in the measured value memory 7A via the address channel 33 controls the characteristic data memory 7B in order to also retrieve the associated characteristic data signals from the memory unit 7 with the measured value signals.

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The task of the adaptation unit 10 is to remain in the data and data reception unit during a

receiving unit 3 or in the storage unit 7 (7A, 7B) tuned period, e.g. a day, a week or saved and from this retrievable data so longer practically unattended in their area of application. That in the evaluation unit 11 e.g. directly in table form through the time base 5 (FIG. (FIG. 1))

(Printing device) or in a graphical representation 5 bar counter 31 (Fig. 2) now generates on the one described above

(Analog writing) can be presented, or, according to an EDP method, write commands at intervals (line 27),

moderate further processing according to predetermined evaluation, which is then carried out at the data channel switch 26 (FIG. 2).

tion criteria can be arranged to a desired lying digital measured value signal in the measured value memory 7A

To provide information digitally and / or analog. is registered.

The essential circuit elements of the adaptation unit 10 i0 as soon as the intended monitoring time period is shown in FIG. 3. As shown at the top of the picture, the data receiving unit 3, including the input and outputs, are aligned with the inputs and outputs on the 1 series 1 and are removed from the measuring point for the purpose of ejecting the bottom of the picture in FIG. 2 and are in multiples - Contain the stored data via the adapter 10 with plug contact arrangement 9 'according to FIG. 1. As directly connected to the evaluation unit 11.

to the evaluation unit 11 or to the conductor connection 12 15 In the event that the is switched through for a certain time, i.e. Data to be evaluated without connections to the circuit area, which are shown above the adapter unit 10, are shown with the same monitoring but without interruption with the same sensor numbers as lines 23 ', 25', 34 and 28 shown in FIG. 2 1, the previously used data for the range selection of the A / D converter 4, the program reception unit 3 is simply replaced by a replacement unit with the data reduction memory 25, the interval program 20 recordable measurement value memory 7A, suitably pre-programmed counter 31 and the read command issuance. programmed logic circuit 6 (area memory 24, data re

The one with the data channel switch 26 of the logic circuit memory 25, clock counter 31) and with the related

Data channel 30 connected to device 6 is replaced by identification data memory 7B provided with control logic 41,

connected, which is actuated by an actuating device 42 for long-term monitoring or for applications. The control logic 41 provides information about the occupancy corresponding to the actuation with a large amount of data.

The device 42 can selectively maintain the connection state of the measured value memory 7A,

Therefore, the receiver unit can be provided with a display device 7C for the a) a digital-analog (D / A) converter 43 for generating memory allocation. This can be used to control an analog output from e.g. 1-10 volts for supplying personnel can be oriented at any time via the “filling status” of the memory of the analog recorder via line 43 ', 30.

b) a bi-di leading directly to the evaluation unit 11. If the logic circuit 6 (see FIG. 2) contains a data-rectional parallel data channel 44 production memory 25, the data can be transmitted via the line 25 "

c) a parallel / serial signal converter 45 for generating, storing in the measured value memory 7A, in addition to a bi-directional serial data output 46. semi-fixed time intervals, for example then

The outputs mentioned under b) and c) can also be initiated if the sensor detects a measured value in accordance with different data evaluation methods in relation to a threshold value or one that is "normal", which may be available in an EDP system appropriate physical condition or process ascertained. The outputs a), b) and c) can be used individually or in e.g. the falling below or exceeding the threshold desired combinations are fed. value, an “abnormal” change in measured value over time, or a

With the actuator 42, the control logic 40 can perform an "abnormal" change cycle. In addition, a

41 e.g. are brought into the following switching states: non-linear recording of part of the measured values within

- Measured value and characteristic data output, programmed in individual steps half of a certain measured value range or controlled by the evaluation unit 11, to or. If e.g. within a range of 10 to 80 ° C several of the exits mentioned under a-c, in particular the range section of 20 to 40 ° C of

- Input of characteristic data in the characteristic data memory 7B. 45 is more important, the latter can have a larger resolution. With the control logic 41, a display device 47 is bound to the rate of dissolution than in the less important area sections which are provided by numbers and / or analog display, i.e. the resolution in the areas 10 is able to give whether there is still data in the measured value storage up to 20 ° C. and 40 to 80 ° C. with 2 "C. per step sufficient 7 A or whether it is empty. The device can be correct while it should also be 47 in the range from 20 to 40 ° C to indicate the data storage values for single and 0.5 ° C. It goes without saying that after this step output of measurement and characteristic data to the evaluation zip, programmable Data receiving units 3 a large unit 11, and to monitor the input of characteristic data on a range of different criteria allow to serve the characteristic data memory 7 B. After a data receiving unit 3 described above

The adapter unit 10 contains for the operation of the in its own way "filled" with measurement data and a separate, preferably ss location has been removed from the circuit elements used, it is supplied via the plug-in contact network-supplied power source 48 to keep it from the Current sources 9, 9 'are not connected to a matching unit 10 of the type of data receiving unit 3 and evaluation unit 11 described above, which are preferably to be made dependent on fixed lines 12. connected to an also stationary evaluation unit 11 The mode of operation of the device according to the invention is. As already mentioned, the latter can be an EDP system - which is no longer part of the invention, which is part of an exemplary monitoring 60 - or can be described from parts of the functioning of a building heating system. In such a system and further evaluation devices, it should also be interested in the functioning of the heating system. In short: it contains the means a) for determining the renden rooms or parts of the building, a working area of the A / D converter 4, b) for determining the one or more data receiving units 3, each with a mode of operation of the data reduction memory 25, c) Inter-connected sensor 1 introduced. The sensor 1 determines 65 vall preselection of the programmable memory 31, d) for example for the outside temperature, the heating flow output of the read commands (manual or program-controlled) or return temperature, the local temperature at and transmission of the characteristic data for the characteristic data storage location Room or part of the building etc. sensor rather, and e) for recording and / or arithmetic

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Evaluation of the data signals forwarded via control logic 41 (FIG. 3) to various recordings, a data printing device and electronic value points. In particular, it can contain data processing devices.

a conventional analog recorder for x-y or x-T

C.

3 sheets of drawings