CN101127154B - Scan test display method and device - Google Patents
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- CN101127154B CN101127154B CN2007101540079A CN200710154007A CN101127154B CN 101127154 B CN101127154 B CN 101127154B CN 2007101540079 A CN2007101540079 A CN 2007101540079A CN 200710154007 A CN200710154007 A CN 200710154007A CN 101127154 B CN101127154 B CN 101127154B
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Abstract
The utility model relates to a displaying method and a device of circulation detection, belonging to industrial automatic instrumental technique, and is characterized in that a plurality of sensors can achieve multiunit and multiclass data storages via switching or memory; the stored signal is instructed by a command device going through transformation into quantified data after classified data pattern calculation and then to a monitor for display; an calculation conversion device comprises multiclass operation modules and transfers an ending signal to start a selftimer simultaneously; therefore controls the displaying time of each signal and the delayed switchover of signal in order to make the monitor to display the quantized data or the address code of each signal; the command device fetches the stored data and then starts the next operation. The utility model has the advantages that the utility model adopts multiunit and multiclass data from built-in memory or outside storage in order that the switching apparatus can select the data to operate, therefore achieves circulation display by the monitor and saves the operation cost of industrial automatic instrument. Simultaneously the utility model can achieve circulation monitoring for multichannel; therefore can meet the developmental needs of industrial instrument and achieve switchable input of all the data.
Description
Technical field:
The present invention relates to industrial automation instrument technology, the measurement that is specially adapted to physical quantitys such as all temps, pressure, rotating speed, length shows.
Background technology:
Measuring Displaying Meter at present mainly is made up of stimulus part, A/D converter, CPU processor, arithmetic unit, display.Only can receive the single signal of one group of single class sensor signal, multiclass signal such as voltage, electric current, resistance are arranged ... can only receive, show a wherein class in single group, it uses loaded down with trivial details in commercial Application, and cost is also than higher, and an instrument is only monitored an equipment.
Summary of the invention:
The objective of the invention is to overcome above-mentioned defective, but provide a kind of unit to receive the scan test display method and the device of the hyperchannel input of many group multiclass signals.
The invention scheme:
The scheme of scan test display method one of the present invention is:
Set up the input signal change-over switch to be connected with a plurality of sensors, the input signal change-over switch is connected with A/D converter by hyperchannel, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, it is corresponding with the input end interface of A/D converter to be provided with address code in the A/D converter simultaneously, address code comprises group sign indicating number, classification sign indicating number, be provided with arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with LED charactron and input keyboard, and its operation steps is:
1, keyboard is connected with the input signal change-over switch of CPU processor, and instruction switching signal selection mode and delay time section are provided with;
2, a plurality of sensors are input to the input signal change-over switch with each group data, and every group of data comprise different classes of data again;
3, the input signal change-over switch switch single group data by the Instruction Selection of the signalling channel switching command device in the CPU processor or respectively organize in the homogeneous data one with the A/D converter channel connection, thereby realize signal input to CPU processor calculating device;
Show for display to display output corresponding address sign indicating number when 4, A/D converter is given the CPU input signal;
5, the arithmetic unit of CPU processor carries out class discrimination to input signal and then enters such other computing conversion equipment according to classification, calculates the quantized data that is used to show demand;
6, the arithmetic unit computing is transferred to display with quantized data after finishing, and simultaneously individual data computing end signal is input to signalling channel switching command device;
7, after signalling channel switching command device receives on the arithmetic unit digital operation end signal, start time-delay mechanism, inhomogeneity signal on the same group or similar not next channel connection of a corresponding data-signal and A/D converter in the signal sequence command input signals switch are on the same group selected by setting in time-delay back, instruct A/D converter to the inferior address code in the corresponding back of display output simultaneously.
Method two of the present invention is:
Sensor signal is connected with A/D converter, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, be provided with signal data internal storage, arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with LED charactron and input keyboard, and its operation steps is:
1, keyboard is connected with the signalling channel switching command device of CPU processor, and instruction switching signal selection mode and delay time section are provided with;
2, a plurality of sensors are input to the datarams reservoir by A/D converter with each group data, and every group of data comprise different classes of data again;
3, the datarams reservoir switches single group data or respectively organizes corresponding one and arithmetic unit channel connection in the homogeneous data by the Instruction Selection of the signalling channel switching command device in the CPU processor, corresponding each data all are provided with address code in the datarams reservoir simultaneously, in the output individual data address code of these data are exported to display for demonstration;
4, the arithmetic unit of CPU processor carries out class discrimination and then enters such other computing translative mode according to classification, calculates the quantized data that is used to show demand;
5, the arithmetic unit computing is transferred to display with quantized data after finishing, and simultaneously individual data computing end signal is input to signalling channel switching command device;
6, after signalling channel switching command device receives on the arithmetic unit digital operation end signal, start time-delay mechanism, inhomogeneity signal on the same group or similar not next channel connection of corresponding data signal of signal sequence director data internal storage internal memory and arithmetic unit are on the same group selected by setting in time-delay back, simultaneously this data corresponding address sign indicating number are exported to display.
The device scheme of implementation method one is:
Set up the input signal change-over switch to be connected with a plurality of sensors, the input signal change-over switch is connected with A/D converter by hyperchannel, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, it is corresponding with the input end interface of A/D converter to be provided with address code in the A/D converter simultaneously, address code comprises the group sign indicating number, the classification sign indicating number, be provided with arithmetic unit in the CPU processor, signalling channel switching command device, display is provided with the LED charactron and the input keyboard of quantized data and address code demonstration, the time-delay mechanism in keyboard and the signalling channel switching command device, command device connects respectively;
The CPU processor comprises:
Be used for the A/D converter input signal is carried out the arithmetic unit that discriminated union is established a plurality of kind operational patterns in distributing to; This arithmetic unit comprises:
Be transferred to the comparer of this kind operational pattern after being used for certain kind digital signal of A/D converter input differentiated,
The signal that is used for that comparer is imported converts the needed quantized data of LED charactron to by this kind numeral translative mode and quantized data is transferred to the LED charactron, sends the computing conversion equipment of this time computing end signal for signalling channel switching command device simultaneously, several are used for by the kind number, are provided with the computing conversion equipment of a plurality of single kinds;
Be used to receive the signalling channel switching command device of time-delay switching command after last time data operation finished; This device comprises:
Be used to receive the time-delay mechanism that starts timing behind the computing end signal last time, the conversion of signals of sending after being used for will the time-delay mechanism timing finishing becomes switching command, the command input signals change-over switch by setting select on the same group inhomogeneity or similar not on the same group in the data order corresponding one is communicated with, instructs simultaneously A/D converter to export to the command device of display with subchannel behind the A/D converter as back time signal for demonstration corresponding to the address code that contains group sign indicating number, classification sign indicating number of the inferior signal in back.
The device scheme of implementation method two is:
Its output terminal of A/D converter that is connected with a plurality of sensors is connected with the I/O mouth of CPU processor, be provided with signal data internal storage, arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with the LED charactron and the input keyboard of quantized data and address code demonstration
The CPU processor comprises:
Be used for being connected the data datarams reservoir of the many groups of storage, multiple class data with the I/O interface;
Be used for the data-signal that data datarams reservoir is transferred is carried out the arithmetic unit that discriminated union is established a plurality of kind operational patterns in selecting to distribute to;
This arithmetic unit comprises:
Be transferred to the comparer of this kind operational pattern after being used for the data-signal that data datarams reservoir is transferred differentiated,
Be used for converting the signal of comparer input to LED charactron needed quantized data by this kind data transfer module, and quantized data is transferred to the LED charactron, send the computing conversion equipment of this time computing end signal for simultaneously signalling channel switching command device, several are used for being provided with by the kind number computing conversion equipment of a plurality of single kinds;
Be used to receive the signalling channel switching command device of time delay command behind the data operation end signal last time; This device comprises:
Be used to receive the time-delay mechanism that starts timing behind the computing end signal last time, the conversion of signals of sending after being used for will the time-delay mechanism timing finishing becomes switching command, the inhomogeneity on the same group in the Instruction Selection data datarams reservoir or similar not on the same group in the data corresponding data by the order of setting as the back secondary data be communicated with, the director data internal storage is exported to the command device that display shows for display corresponding to the address code that contains group sign indicating number, classification sign indicating number of back time signal simultaneously.
The invention has the advantages that the data external memory that adopts many groups, multiple class or internal memory show to realize that display is touring for the switching device shifter computing of recruiting, saved the cost that industrial automatic instrument(s) uses, unit can be realized the hyperchannel itinerant monitor system, the needs of industrial instrument development can be satisfied simultaneously again, the complete changeable input of signal can be accomplished.
Description of drawings:
Fig. 1 is the step block scheme of method one.
Fig. 2 is the step block scheme of method two.
Fig. 3 is the block diagram of device one.
Fig. 4 is the block diagram of device two.
Embodiment:
The step of the solution of the present invention one is:
Set up the input signal change-over switch to be connected with a plurality of sensors, the input signal change-over switch is connected with A/D converter by hyperchannel, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, it is corresponding with the input end interface of A/D converter to be provided with address code in the A/D converter simultaneously, address code comprises group sign indicating number, classification sign indicating number, be provided with arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with LED charactron and input keyboard, and its operation steps is:
1, keyboard is connected with the input signal change-over switch of CPU processor, and instruction switching signal selection mode and delay time section are provided with;
2, a plurality of sensors are input to the input signal change-over switch with each group data, and every group of data comprise different classes of data again;
3, the input signal change-over switch switch single group data by the Instruction Selection of the signalling channel switching command device in the CPU processor or respectively organize in the homogeneous data one with the A/D converter channel connection, thereby realize signal input to CPU processor calculating device;
Show for display to display output corresponding address sign indicating number when 4, A/D converter is given the CPU input signal;
5, the arithmetic unit of CPU processor carries out class discrimination to input signal and then enters such other computing conversion equipment according to classification, calculates the quantized data that is used to show demand;
6, the arithmetic unit computing is transferred to display with quantized data after finishing, and simultaneously individual data computing end signal is input to signalling channel switching command device;
7, after signalling channel switching command device receives on the arithmetic unit digital operation end signal, start time-delay mechanism, inhomogeneity signal on the same group or similar not next channel connection of a corresponding data-signal and A/D converter in the signal sequence command input signals switch are on the same group selected by setting in time-delay back, instruct A/D converter to the inferior address code in the corresponding back of display output simultaneously.
The device of its enforcement is:
Set up the input signal change-over switch to be connected with a plurality of sensors, the input signal change-over switch is connected with A/D converter by hyperchannel, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, it is corresponding with the input end interface of A/D converter to be provided with address code in the A/D converter simultaneously, address code comprises the group sign indicating number, the classification sign indicating number, be provided with arithmetic unit in the CPU processor, signalling channel switching command device, display is provided with the LED charactron and the input keyboard of quantized data and address code demonstration, the time-delay mechanism in keyboard and the signalling channel switching command device, command device connects respectively;
The CPU processor comprises:
Be used for the A/D converter input signal is carried out the arithmetic unit that discriminated union is established a plurality of kind operational patterns in distributing to; This arithmetic unit comprises:
Be transferred to the comparer of this kind operational pattern after being used for certain kind digital signal of A/D converter input differentiated,
The signal that is used for that comparer is imported converts the needed quantized data of LED charactron to by this kind numeral translative mode and quantized data is transferred to the LED charactron, sends the computing conversion equipment of this time computing end signal for signalling channel switching command device simultaneously, several are used for by the kind number, are provided with the computing conversion equipment of a plurality of single kinds; Be used to receive the switching command device of the signalling channel of time-delay switching command after last time data operation finished; This device comprises:
Be used to receive the time-delay mechanism that starts timing behind the computing end signal last time, the conversion of signals of sending after being used for will the time-delay mechanism timing finishing becomes switching command, the command input signals change-over switch by setting select on the same group inhomogeneity or similar not on the same group in the data order corresponding one is communicated with, instructs simultaneously A/D converter to export to the command device of display with subchannel behind the A/D converter as back time signal for demonstration corresponding to the address code that contains group sign indicating number, classification sign indicating number of the inferior signal in back.
Signal is meant the signal such as electric current, voltage, thermal resistance, thermopair of single device on the same group;
Can realize that each sorting signal is imported the computing demonstration successively on the same group;
Uniformity signal is meant the same sorting signal of every equipment, shows for selecting then to import computing successively with the current signal of each group as setting current signal.
Also can realize on the same group, uniformity signal intersects and to import computing successively and show;
In the arithmetic unit " several are used for being provided with by the kind number computing conversion equipment of a plurality of single kinds " be meant species number if having four as: electric current, voltage, thermal resistance, thermopair then just comprise current operator conversion equipment, voltage operational conversion equipment, thermal resistance computing conversion equipment, thermopair computing conversion equipment totally four sub-devices under the arithmetic unit item.Because the quantized data kind data-signal translative mode difference in each sub-device, and quantized data, end signal output are identical.
During running, at first with keyboard input display mode as showing various types of signal on the same group successively, or show uniformity signal of each group successively, keyboard also will be given the time-delay input time delay time period simultaneously;
Keyboard can also be clicked certain kind signal demonstration of certain group by demand.
After the setting, send enabled instruction by lower keyboard, operational devices then begin to switch on request transfer data comparison, computing, export last time data presentation, time-delay transferred the back secondary data and entered program, realized switching continuously showing, display is the quantized data of explicit address sign indicating number and this yard simultaneously.
The step of the solution of the present invention two is:
Sensor signal is connected with A/D converter, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, be provided with signal data internal storage, arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with LED charactron and input keyboard, and its operation steps is:
1, keyboard is connected with the signalling channel switching command device of CPU processor, and instruction switching signal selection mode and delay time section are provided with;
2, a plurality of sensors are input to the datarams reservoir by A/D converter with each group data, and every group of data comprise different classes of data again;
3, the datarams reservoir switches single group data or respectively organizes corresponding one and arithmetic unit channel connection in the homogeneous data by the Instruction Selection of the signalling channel switching command device in the CPU processor, corresponding each data all are provided with address code in the datarams reservoir simultaneously, in the output individual data address code of these data are exported to display for demonstration;
4, the arithmetic unit of CPU processor carries out class discrimination and then enters such other computing translative mode according to classification, calculates the quantized data that is used to show demand;
5, the arithmetic unit computing is transferred to display with quantized data after finishing, and simultaneously individual data computing end signal is input to signalling channel switching command device;
6, after signalling channel switching command device receives on the arithmetic unit digital operation end signal, start time-delay mechanism, inhomogeneity signal on the same group or similar not next channel connection of corresponding data signal of signal sequence director data internal storage internal memory and arithmetic unit are on the same group selected by setting in time-delay back, simultaneously this data corresponding address sign indicating number are exported to display.
The device of its enforcement is:
Its output terminal of A/D converter that is connected with a plurality of sensors is connected with the I/O mouth of CPU processor, be provided with signal data internal storage, arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with the LED charactron and the input keyboard of quantized data and address code demonstration
The CPU processor comprises:
Be used for being connected the data datarams reservoir of the many groups of storage, multiple class data with the I/O interface; Be used for the data-signal that data datarams reservoir is transferred is carried out the arithmetic unit that discriminated union is established a plurality of kind operational patterns in selecting to distribute to;
This arithmetic unit comprises:
Be transferred to the comparer of this kind operational pattern after being used for the data-signal that data datarams reservoir is transferred differentiated,
Be used for converting the signal of comparer input to LED charactron needed quantized data by this kind data transfer module, and quantized data is transferred to the LED charactron, send the computing conversion equipment of this time computing end signal for simultaneously signalling channel switching command device, several are used for being provided with by the kind number computing conversion equipment of a plurality of single kinds; Be used to receive the switching device shifter of time delay command signalling channel behind the data operation end signal last time; This device comprises:
Be used to receive the time-delay mechanism that starts timing behind the computing end signal last time, the conversion of signals of sending after being used for will the time-delay mechanism timing finishing becomes switching command, the inhomogeneity on the same group in the Instruction Selection data datarams reservoir or similar not on the same group in the data corresponding data by the order of setting as the back secondary data be communicated with, the director data internal storage is exported to the command device that display shows for display corresponding to the address code that contains group sign indicating number, classification sign indicating number of back time signal simultaneously.
Scan test display method and device can be realized and the host computer on-line communication by its communication module and host computer management software, send output unit to give peripheral hardware by installing to become, can realize that by relay is installed switching value output is to reach the purpose of control peripheral hardware measuring the operation result change.
Keyboard to set up and running are identical with the keyboard to set up and the running embodiment of scheme one.
Claims (4)
1. scan test display method comprises signal input, A/D conversion, categorical data computing conversion, quantized data demonstration, it is characterized in that:
Set up the input signal change-over switch to be connected with a plurality of sensors, the input signal change-over switch is connected with A/D converter by hyperchannel, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, it is corresponding with the input end interface of A/D converter to be provided with address code in the A/D converter simultaneously, address code comprises group sign indicating number, classification sign indicating number, be provided with arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with LED charactron and input keyboard, and its operation steps is:
1), time-delay mechanism, command device in keyboard and the signalling channel switching command device be connected respectively, instruction switching signal selection mode and delay time section are provided with;
2), a plurality of sensor with each the group data be input to the input signal change-over switch, every group of data comprise different classes of data again;
3), the input signal change-over switch switch single group data by the Instruction Selection of the signalling channel switching command device in the CPU processor or respectively organize in the homogeneous data one with the A/D converter channel connection, thereby realize signal input to CPU processor calculating device;
Show for display to display output corresponding address sign indicating number when 4), A/D converter is given the CPU input signal;
5), the arithmetic unit of CPU processor carries out class discrimination to input signal and then enters such other computing conversion equipment according to classification, calculates the quantized data that is used to show demand;
6), the arithmetic unit computing is transferred to display with quantized data after finishing, and simultaneously individual data computing end signal is input to signalling channel switching command device;
7) after, signalling channel switching command device receives on the arithmetic unit digital operation end signal, start time-delay mechanism, time-delay back command input signals change-over switch by setting select on the same group inhomogeneity or similar not on the same group in the data order corresponding one as back time signal next channel connection with A/D converter, instruct A/D converter to the inferior address code in the corresponding back of display output simultaneously.
2. scan test display method comprises signal input, A/D conversion, categorical data computing conversion, quantized data demonstration, it is characterized in that:
Sensor signal is connected with A/D converter, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, be provided with signal data internal storage, arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with LED charactron and input keyboard, and its operation steps is:
1), keyboard is connected instruction switching signal selection mode and the setting of delay time section with the signalling channel switching command device of CPU processor;
2), a plurality of sensor by A/D converter with each the group data be input to the datarams reservoir, every group of data comprise different classes of data again;
3), the datarams reservoir switches single group data or respectively organizes corresponding one and arithmetic unit channel connection in the homogeneous data by the Instruction Selection of the signalling channel switching command device in the CPU processor, corresponding each data all are provided with address code in the datarams reservoir simultaneously, in the output individual data address code of these data are exported to display for demonstration;
4), the arithmetic unit of CPU processor carries out class discrimination and then enters such other computing translative mode according to classification, calculates the quantized data that is used to show demand;
5), the arithmetic unit computing is transferred to display with quantized data after finishing, and simultaneously individual data computing end signal is input to signalling channel switching command device;
6) after, signalling channel switching command device receives on the arithmetic unit digital operation end signal, start time-delay mechanism, inhomogeneity on the same group in the Instruction Selection signal data internal storage of time-delay back or similar not on the same group in the data corresponding data simultaneously this data corresponding address sign indicating number is exported to display by next channel connection of order of setting and arithmetic unit.
3. data-logger comprises signal input apparatus, A/D converter, CPU processor, display, it is characterized in that:
Set up the input signal change-over switch to be connected with a plurality of sensors, the input signal change-over switch is connected with A/D converter by hyperchannel, A/D converter is connected with the I/O mouth of CPU processor by hyperchannel, it is corresponding with the input end interface of A/D converter to be provided with address code in the A/D converter simultaneously, address code comprises the group sign indicating number, the classification sign indicating number, be provided with arithmetic unit in the CPU processor, signalling channel switching command device, display is provided with the LED charactron and the input keyboard of quantized data and address code demonstration, the time-delay mechanism in keyboard and the signalling channel switching command device, command device connects respectively;
The CPU processor comprises:
Be used for the A/D converter input signal is carried out the arithmetic unit that discriminated union is established a plurality of kind operational patterns in distributing to; This arithmetic unit comprises:
Be transferred to the comparer of this kind operational pattern after being used for certain kind digital signal of A/D converter input differentiated,
The signal that is used for that comparer is imported converts the needed quantized data of LED charactron to by this kind operational pattern and quantized data is transferred to the LED charactron, sends the computing conversion equipment of this time computing end signal for signalling channel switching command device simultaneously
Several are used for by the kind number, are provided with the described computing conversion equipment of a plurality of single kinds;
Be used to receive the signalling channel switching command device of time delay command after last time data operation finished; Described switching command device comprises:
Be used to receive the time-delay mechanism that starts timing behind the computing end signal last time,
The conversion of signals of sending after being used for will the time-delay mechanism timing finishing becomes switching command, the command input signals change-over switch by setting select on the same group inhomogeneity or similar not on the same group in the data order corresponding one is communicated with, instructs simultaneously A/D converter to export to the command device of display with subchannel behind the A/D converter as back time signal for demonstration corresponding to the address code that contains group sign indicating number, classification sign indicating number of the inferior signal in back.
4. data-logger comprises signal input apparatus, A/D converter, CPU processor, display, it is characterized in that:
Its output terminal of A/D converter that is connected with a plurality of sensors is connected with the I/O mouth of CPU processor, be provided with signal data internal storage, arithmetic unit, signalling channel switching command device in the CPU processor, display is provided with the LED charactron and the input keyboard of quantized data and address code demonstration
The CPU processor comprises:
Be used for being connected the signal data internal storage of the many groups of storage, multiple class data with the I/O interface;
The data-signal that is used for that the signal data internal storage is transferred carries out the arithmetic unit that discriminated union is established a plurality of kind operational patterns in selecting to distribute to;
This arithmetic unit comprises:
Be transferred to the comparer of this kind operational pattern after being used for the data-signal that the signal data internal storage is transferred differentiated,
Be used for converting the signal of comparer input to LED charactron needed quantized data by this kind operational pattern, and quantized data be transferred to the LED charactron, send the computing conversion equipment of this time computing end signal simultaneously to signalling channel switching command device,
Several are used for being provided with by the kind number the described computing conversion equipment of a plurality of single kinds;
Be used to receive the signalling channel switching command device of time delay command behind the data operation end signal last time; Described switching command device comprises:
Be used to receive the time-delay mechanism that starts timing behind the computing end signal last time,
The conversion of signals of sending after being used for will the time-delay mechanism timing finishing becomes switching command, the inhomogeneity on the same group in the Instruction Selection signal data internal storage or similar not on the same group in the data corresponding data by the order of setting as the back secondary data be communicated with, the director data internal storage is exported to the command device that display shows for display corresponding to the address code that contains group sign indicating number, classification sign indicating number of back time signal simultaneously.
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| CN102902234B (en) * | 2011-07-26 | 2015-12-09 | 昆山子力高新科技实业有限公司 | Hardware modularity and the configurable industrial control instrument device and method of software |
| CN104698247A (en) * | 2015-03-02 | 2015-06-10 | 优利德科技(中国)有限公司 | Equivalent-functional dual-channel data measuring method and equivalent-functional dual-channel data measuring apparatus |
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| US4031355A (en) * | 1975-03-31 | 1977-06-21 | Leonik Jr Stephen A | Multi-channel temperature responsive process control system |
| EP0232720A1 (en) * | 1986-01-10 | 1987-08-19 | Omron Tateisi Electronics Co. | Multi channel temperature controller utilizing electronic multiplexer |
| CN2364450Y (en) * | 1999-03-18 | 2000-02-16 | 华南理工大学 | Pressure data logger for single-chip microcomputer textile plant equipment |
| CN1128501C (en) * | 1998-12-25 | 2003-11-19 | 华南理工大学 | Twelve position mode/digit converting card |
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2007
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4031355A (en) * | 1975-03-31 | 1977-06-21 | Leonik Jr Stephen A | Multi-channel temperature responsive process control system |
| EP0232720A1 (en) * | 1986-01-10 | 1987-08-19 | Omron Tateisi Electronics Co. | Multi channel temperature controller utilizing electronic multiplexer |
| CN1128501C (en) * | 1998-12-25 | 2003-11-19 | 华南理工大学 | Twelve position mode/digit converting card |
| CN2364450Y (en) * | 1999-03-18 | 2000-02-16 | 华南理工大学 | Pressure data logger for single-chip microcomputer textile plant equipment |
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