JP2579657Y2 - Electronics - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device which reads setting data of a setting unit every time the power is turned on, and makes a self-determination of a model and an operation mode. The present invention relates to a technique for reducing noise.

[0002]

2. Description of the Related Art In an electronic device of this kind, for example, a digital panel meter, a type of output such as a relay output, a transistor output, and a BCD output, and a type of display such as a display content on a front display panel are selected. There are a plurality of models, and the operation mode includes various modes such as a test mode and a maintenance mode used by a manufacturer, and a RUN mode used by a user.

For this reason, in a digital panel meter, data indicating a model and an operation mode are set in a diode switch as a setting unit. Each time the power is turned on, the setting data of the diode switch is read and the model and operation mode are read. The mode is self-determined, and processing corresponding to the model and operation mode determined is performed.

[0004]

Conventionally, setting data of a diode switch is read a predetermined number of times, for example, 20 times, as shown in the flowchart of FIG. When the data is consecutive five times, the data is determined to be determined data, and the processing shifts to a process according to the model and operation mode corresponding to the determined data.

[0005] Therefore, for example, when reading data of 3 bits, as follows, the first time, the second time, the third time, the fourth time, the fifth time 001 001 001 001 001 001 In this case, the data 001 is smoothly processed. Is determined data, and the corresponding model and operation mode are determined.

However, for example, when data is read as follows due to the influence of noise or the like, the first time, the second time, the third time, the fourth time, the fifth time 001 001 001 001 001 000 the sixth time, the eighth time, the ninth time, the tenth time, and the tenth time 001 001 001 001 010 11 times 12 times 13 times 14 times 15 times 001 001 001 001 001 011 16 times 17 times 18 times 19 times 20 times 001 001 001 001 101 In this case, the same data is read 5 times in succession. Therefore, the data cannot be determined, and the process cannot proceed to the next process. In this case, it is necessary to turn on the power again.

Further, when erroneous data is read five times in succession due to the influence of noise or the like, the operation mode is shifted to an operation mode different from the operation mode to be originally shifted.

As described above, in the conventional electronic device, when the same data is read a predetermined number of times and the same data continues for a certain number of times, the data is determined as the determined data, so that the determined data cannot be obtained. There is a drawback in that erroneous data may be determined data.

The present invention has been made in view of the above points, and reads data set in a setting unit in response to power-on, and based on the read data, a model and an operation mode. It is an object of the present invention to reduce the reading error of set data and increase the accuracy of self-determination in an electronic device that performs self-determination.

[0010]

In order to achieve the above-mentioned object, the present invention is configured as follows.

That is, the present invention is an electronic device which reads data set in a setting unit in response to power-on and self-determines a model or the like based on the read data. Reading means for repeatedly reading data that has been performed a predetermined number of times, selecting means for selecting data having the highest number of appearances among data of the predetermined number of times read by the reading means, and data having the highest number of occurrences being 1 A determination unit for determining whether the type is the type, and when it is determined that the most frequent data is one type, the most frequent data is determined as the determined data. The reading of the predetermined number of times and the selection by the selection means are performed until the data having the largest number of appearances is determined to be one type by the determination means to obtain the final data. A data determination means for repeating, on the basis of the determined data, and discriminating means for discriminating the type or the like,
It has.

[0012]

According to the above configuration, the reading of the predetermined number of times is repeated until the data having the largest number of appearances becomes one type and the fixed data is obtained in the reading of the predetermined number of times. When the data continues for a certain number of times, unlike the conventional example in which the data is determined data, it is possible to reduce the possibility that determined data cannot be obtained or that erroneous data is determined as defined data.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic structural view of one embodiment of the present invention. In this embodiment, the present invention will be described by applying to a digital panel meter.

In FIG. 1, reference numeral 1 denotes a key switch for performing various settings such as a level and a mode, 2 denotes an input circuit to which an output of a sensor (not shown) is given, and 3 denotes a display for displaying various values such as a current value or a comparison output. A circuit 4 is an output circuit for providing a transistor output, for example, 5 is a power supply circuit for supplying power to each unit, and 7 is a diode as a setting unit in which data corresponding to the model and operation mode of the digital panel meter 6 is set. A switch 8 is a microcomputer for controlling each unit.

The digital panel meter 6 of this embodiment is
Similar to the conventional example, every time the power is turned on, the data set in the diode switch 7 is read, and the model and the operation mode are self-determined, and processing corresponding to the determined model and the operation mode is performed. is there.

Further, this digital panel meter 6
In order to reduce errors in reading data set in the diode switch 7 and increase the accuracy of self-determination, the following configuration is provided.

That is, as shown in the functional block diagram of FIG. 2, the microcomputer 8 repeatedly reads the data set in the diode switch a predetermined number of times in response to power-on, in this embodiment, 20 times. Reading means 9, selecting means 10 for selecting data having the highest number of appearances from the read data for 20 times, and determining means 11 for judging whether or not the data having the highest number of occurrences selected is one type When it is determined that the most frequent data is one type, the most frequent data is determined data, and when it is determined that it is not one type, 20 readings by the reading means 9 and selection by the sorting means 10 are performed. The most frequently appearing data is 1
It has a function as a data determination unit 12 that repeats until the type is determined and the determined data is obtained, and a determination unit 13 that determines a model and an operation mode based on the determined data.

That is, in the digital panel meter 6 of this embodiment, when the data set in the diode switch 7 is read 20 times, the most frequently appearing data is 1
The above 20 readings are repeated until the data is determined as the type and the determined data is obtained.

FIG. 3 is a flowchart of this self-determination, and the process shifts to this process every time the power is turned on.

First, the data set in the diode switch 7 is repeatedly read 20 times (step n).
1), the data having the highest number of appearances in the 20 readings is selected (step n2), and it is determined whether or not the selected data is one type (step n3). If not, the process proceeds to step n1. Return, when there is only one type,
The one type of data is used as fixed data (step n
4) The process proceeds to the process corresponding to the determined data as in the conventional case.

As described above, when the power is turned on, the data set in the diode switch 7 is read 20 times, and the data having the largest number of appearances becomes one type until the determined data is obtained. Is read repeatedly, so when the same data is repeated a certain number of times, there is no possibility that the confirmed data cannot be obtained as in the conventional example that uses that data as the confirmed data. It is possible to reduce the use of fixed data.

For example, in the case of reading the above-mentioned 3-bit data, conventionally, 3-bit data, for example, 001 has to be read continuously 5 times in a row, but the data is read with a clock of 1 ms7 cycle. If it is read, a one-bit error is not allowed for about 35 ms.
Since the data having the largest number of appearances is determined as the determined data in each reading, an error is allowed up to nine times.

In the above-described embodiment, the digital panel meter has been described. However, the present invention is not limited to the digital panel meter. The same applies to vessels.

[0025]

As described above, according to the present invention, the reading of the predetermined number of times is repeated until the data having the largest number of appearances becomes one type and the determined data is obtained by reading the data of the setting section a predetermined number of times. Since the repetition is repeated, it is possible to reduce the possibility of obtaining definite data or changing erroneous data to definite data, as in the conventional example, and to increase the accuracy of self-determination.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a functional block diagram of the embodiment of FIG.

FIG. 3 is a flowchart for explaining the operation of the embodiment of FIG. 1;

FIG. 4 is a flowchart of a conventional example.

[Explanation of symbols]

 Reference Signs List 6 Digital panel meter 7 Diode switch (setting unit) 8 Microcomputer 9 Reading means 10 Sorting means 11 Judgment means 12 Data determination means 13 Judgment means

Claims (1)

(57) [Scope of request for utility model registration] 1. A data set in a setting section is read in response to power-on, and based on the read data,
An electronic device for self-determining a model or the like, comprising: a reading unit that repeatedly reads data set in the setting unit a predetermined number of times; and a most frequently appearing number of data of the predetermined number of times read by the reading unit. Selecting means for selecting data; determining means for determining whether or not the most frequent data is one type; and when it is determined that the most frequent data is one type, the most frequent data is determined. When it is determined that the data is not one type, the predetermined number of times of reading by the reading unit and the selection by the selecting unit are determined by the determining unit to be one type with the most frequently appearing data, and the determined data is obtained. An electronic device comprising: a data determination unit that repeats until the determination data;