JPH01263712A - Electronic control equipment - Google Patents

Abstract

PURPOSE:To simplify constitution by inputting code information, etc., all at once as the activating means of a utility program with an existing operating part. CONSTITUTION:The period from an (a) point to a (b) point is the one of one code input, and during the period, a TM (timer) is cleared with a bit signal SW becomes '0 1' or '1 0,' respective types of the time are measured. For example, after the bit signal SW is changed to '0 1,' when a switch 2 is released before the condition of SW='1' passes for more than 2 seconds, the said input bit data are discriminated to be '0.' After the bit signal SW is changed to '0 1,' when the condition of SW=1 passes for more than 2 seconds, the said input bit data are discriminated to be '1.' Consequently, the correct input of bit data '0' is executed by releasing the switch 2 within two seconds, and the correct input of bit data '1' is executed by releasing a switch more than 2 seconds less than 5 seconds. By such an input means, the code for the activation of the utility program is inputted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to electronic control equipment, and particularly to system equipment (magnetic disk device, optical disk device, etc.) and other electronic control devices to which microcomputer control is applied.

[Prior Art] Microcomputer control is applied not only to system equipment such as magnetic disk devices and optical disk devices, but also to home appliances such as automobiles, stereo devices, and air conditioners. Such electronic control equipment usually has only the minimum necessary operating units (switches and displays) from the viewpoint of design and functionality. On the other hand, due to the high level and complexity of control of these devices, it is necessary to perform fault diagnosis, maintenance, adjustment, etc. using utility programs.

[Problems to be Solved by the Invention] However, conventionally, as a means for starting such a utility program, an expensive configuration that can input code information and the like all at once has always been installed inside the device.

Alternatively, they carried around an expensive activation method and connected it externally every time they performed maintenance or adjustment.

The present invention eliminates the above-mentioned drawbacks of the prior art, and its object is to provide an electronic control device that has a simple configuration and allows code information to be input easily and reliably, preferably using an existing operating section. Our goal is to provide the following.

[Means for Solving the Problems] In order to achieve the above object, the electronic control device of the present invention has the following features:
a switch means for manipulating and inputting a bit signal; a discriminating means for determining bit information based on whether or not the duration of the bit signal being manipulated is longer than a predetermined time; The outline of the system is to include a display means for displaying the discrimination state.

[Function] In this configuration, the user operates and inputs a bit signal using the switch means. The discriminating means (6) discriminates bit information depending on whether the duration of the bit signal being inputted is longer than a predetermined time. The display means guides the operation input of the bit signal and displays the discrimination state of the bit information.

[Description of Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of an electronic control device according to an embodiment of the present invention. It should be noted that various types of electronic control equipment can be considered as the electronic control equipment of the embodiment. Examples include system equipment such as magnetic disk devices and optical disk devices, as well as home appliances such as automobiles, stereo devices, and air conditioners.

In the figure, l is an operation section, which is an original operation section (operation panel) provided in a normal electronic control device. 8 is a control unit, which is a microcomputer (
This is the part that applies the MPU) control system. It should be noted that since various types of electronic control equipment can be considered, only the numerical control bus CB will be shown here, and description of the functions and configuration of the equipment itself will be omitted.

In the operation unit 1, reference numeral 2 denotes a button switch, one or two of which are always required for a normal electronic control device. Even if you don't need it, you can just install one, so the cost is low. If installed, it is installed on the operation panel. If it is on the operation panel, there is no need to open the equipment cabinet and it can be easily operated. The switch 2 cooperates with the pull-up resistor R and the inverter circuit 5 to follow the manual operation of the user.
A bit signal SW of a value level (for example, OV="0", 5v="1") is generated. This binary level is recognized by the control unit 8 via the sense line 50. 3 is a light emitting diode (LED), and similarly one or two are always required.

Note that the LED 3 in this embodiment uses a three-terminal type, and the combination of the red lighting signal R and the green lighting signal G causes the red (
It can display three colors: R), green (G), and orange (CM=R*G). 4 is a Schmitt gate circuit that operates together with a capacitor C and a pull-up resistor R to generate an interrupt signal (
PWR-ON-INT). The interrupt signal causes an interrupt to the control unit (MPU) 8 via a corresponding interrupt line. Reference numeral 6 denotes an edge detection circuit, which detects each edge where the bit signal SW being manually input changes from "0 to 1" and "1 to O", and outputs a switch interrupt signal (SW-I NT) at that point.
Output. 7 is a peripheral I10 driver circuit, which drives a 3-terminal LED according to a red lighting signal R and a green lighting signal G.
Drive 3.

The control unit 8 is composed of various functional blocks realized by a microcomputer. A main control means 9 manages and executes the code information input processing by the switch 2 and the original normal processing as an electronic control device. Reference numeral 10 denotes an input control means, which guides the operation input of the bit signal by LED 3, and determines the bit information depending on whether the duration of the bit signal being input is longer than a predetermined time; Displays the determination status of bit information. The input control means 10 includes the necessary configuration to perform such control. For example, 13 is a code buffer (BUFF), which stores a predetermined number of manually generated bit information (code information). A timer enable flag (TMEF) 14 activates/deactivates the function of the timer (TM) 15. 15 is a timer (TM), which starts when inputting a bit signal.
The duration of the input bit signal ("O" or "1") is measured. This measurement is performed while a predetermined condition is satisfied, for example, a clock signal (CLOC) with an interval of 100 m5.
This is done by counting the number of interrupts (100ms-INT) caused by K). In addition, set the clock interval to Lo.
The reason for using oms is to reduce the error between the actual manual motion and the measurement time. If the time is set to 10 ms, the error will be further reduced. 16 is an index counter (n) that indexes the bit write address in BUFF 13; 17 is a predetermined value (N), which determines the number of bits of one code information.

Reference numeral 11 denotes a utility processing means, which executes various maintenance and adjustment processes using the bit-input code information as command information or parameter information of the utility program. There may be multiple types of utility programs for one device. In this case, one can be selected using code information manually input. In addition, utility programs are tailored to the functions and configurations of various electronic control devices.
For example, in the case of a magnetic disk device or optical disk device, the functions include a servo function check and an ID read check, and in the case of an IC card drive device, the functions include a memory test, a device ID number set, and an automatic failure diagnosis function. Reference numeral 12 denotes a normal processing means, which is a part that performs microcomputer control inherent to electronic control equipment. Of course, the normal processing program depends on the functions and configurations of various electronic control devices.

FIG. 2 is a flowchart of the processing procedure of the main control means of the embodiment. When the device of this embodiment is powered on while holding down the switch 2 of the operation section 1, it enters the bit data input mode, and when the power is turned on without pressing the switch 2, it operates as an original electronic control device.

When the power is turned on to the device, an interrupt signal (P
WR-ON-INT) occurs and enters this process.

In step S1, it is determined via the sense line 50 whether or not the bit signal 5W=1. If SW=1 is not present at this point, the process advances to step S5 and normal processing is executed. This is the original usage as an electronic control device. Also SW
When = 1, the process proceeds to step S2, and code input processing using the bit signal SW (Fig. 3, Fig. 4 (A) and (B))
Execute. In step S3, a corresponding utility program is executed according to the input code information. In step S4, it is determined whether or not the utility processing has ended. In this case, for example, when the terminated utility program requests the activation of another utility program, a determination of "NO" is made in step S4, and the next code information input process is performed. Further, the utility program just started in step S3 may further request input of a plurality of parameters. Even in such a case, the determination of "No" is made in step S4, and the process of inputting the necessary number of pieces of code information is repeated. In this way, when it is determined in step S4 that the utility processing has ended, the process advances to step S5.
Perform normal processing.

In addition to the above method, a method may also be used in which, for example, the execution of one utility program is terminated, the power is turned off, and the power is turned on again.

In this way, the main control means 9 can be simplified, and each time the power is turned on, a different utility program can be selected and executed, and normal processing can be started at will.

FIG. 3 is a flowchart of the bit data input processing procedure of the embodiment. When the power is turned on with the switch 2 held down as described above, this processing is entered. Step Sll
Then, the signals R and G (=orange M) are blinked at the same time at a relatively slow cycle. This relatively slow blinking of orange notifies the operator that the bit signal is ready to be read. A series of initial processing is performed in steps 812 to S14. That is, in step S12, the TMEF 14 is cleared to deactivate the timer function. In step S13, B
Write all bit data “O” to UFF 13. This guarantees that the bit data is "O" unless the bit data "l" is written later. In step S14, the contents of index (n) 16 are cleared.

Thus, in step S15, the process waits for the operator to release switch 2 (SW=O). When switch 2 is released, the process advances to step 316 and the first bit signal input starts (SW=1
) to wait. First press switch 2 (SW=1
), the process advances to step S17, and TMEF is set to "1". This allows the function of the timer (TM) 15 (Fig. 4 (
B)) function is activated. In step S18, 5W=
Wait until it becomes 1. However, when inputting from step S17, the meaning is only to confirm that SW=1. In step S19, set (R=OFF)*(G=ON) and turn the LE
Light up green on D3.

This green lighting informs the operator that the bit signal SW is recognized as "1". And this green light is 5W
Since the state of =1 has not passed for more than the predetermined time (2 seconds), if you release switch 2 at this point, the bit data will become "0".
The operator is informed that the

In step S20, the operator releases switch 2 (SW=
Wait for O). In addition, if the input bit information is “1” or “0”
This determination is performed at the same time as the process shown in Figure 4 (B), which measures the length of the bit signal SW = 1 according to the number of Looms-INT interrupts. What is done is to separate each bit input operation into bits.In other words, regardless of the length of time when SW = 1, when the operator releases switch 2 after pressing it, the input for one bit of information is completed. In step S21, the contents of index (n) 16 are incremented by 1.If bit data "1" has not been written to BUFF (n) by the process shown in FIG. 4(B) by this point, The bit information of the address is “0”.Step S2
2, it is determined whether the contents of index (n) 16 are a predetermined value N-1. If n=N-1, the input of one code data has not been completed, and the flow advances to step S23. In step S23, (n=ON)*(G=ON) is set and the LED 3 lights up orange.

This orange lighting informs the operator that the next bit input is waiting.

In this way, when the bits for the ■ code (N bits) are input, it is determined in step S22 that n=N-1. The flow advances to step S24, where TMEF is set to "0". In step S25, the signals R and G (=orange M) are simultaneously blinked at a relatively fast cycle. This relatively fast blinking of orange informs the operator that input of one code data has been completed. Note that this blinking is fast, so it is easy to distinguish it from the orange lighting during input (next bit input instruction). Therefore, one code can be input quickly.

FIG. 4(A) is a flowchart of switch interrupt processing according to the embodiment. The edge detection circuit 6 outputs an edge detection signal (SW
-INT) is input to this process. In step S31, the contents of 7M15 are cleared. That is, 7M
15 is cleared each time the bit signal SW becomes ro-IJ or r1-OJ.

FIG. 4 CB) is a flowchart of timer interrupt processing in the embodiment. When a clock signal CLOCK with a period of 100m5 is generated, it is input to this process. In step S41, T
It is determined whether MEF=1 or not. While TMEF=1, 7M15 does not function at all because the bit signal SW is not being input. When TMEF=1, the bit signal SW is being input, and the flow advances to step S42. Step S4
2, add +1 to the contents of 7M15. In step S43, it is determined whether TM=20 (2 seconds have passed). When 2 seconds have elapsed, the process advances to step S44, and it is further determined whether 5W=1. If SW = 1, the input of bit signal “1” is 2
This means that seconds have elapsed, and in step S45, the red LED 3 ((n=ON)*(G=OFF)) is turned on. This red lighting informs the operator that the input bit data has been recognized as "1". In step S46, BUFF
Bit data "1" is written to the bit address pointed to by index (n) 16 of 15.

Further, if SW=t is not determined in step S44, it means that 2 seconds have elapsed since the bit signal 5W=O was input.

This is the idle time between one bit data input and the next bit data input, and is not informative at all.

Also, if it is determined in step S43 that 2 seconds have not elapsed (less than 2 seconds or more than 2 seconds), TM=50 in step S47.
(5 seconds have passed). If 5 seconds have not elapsed, the process is RETURN. Also, when 5 seconds have passed,
Regardless of whether the bit signal 5W=1 or 5W=0, the input operation is canceled and the flow is the third one.
Return to step Sll in the figure. That is, it is preferable that one code input is completed within a certain time after a bit input operation is started. However, if the bit signal is “l” or “
If the switch 2 is left in the "O" state for a long time, it is assumed that the switch 2 is malfunctioning or that the operator has voluntarily given up on inputting the code.Therefore, it was decided to cancel the bit input operation.

FIG. 5 is a timing chart of the input processing operation of the embodiment. In the figure, the period from point a to point b is one code input period. During this period, the bit signal SW of TM11 is r.
After being cleared at each time when o-IJ or r 1-OJ is reached, various times are measured. For example, bit signal SW
If the switch 2 is released before 2 seconds or more have elapsed after the SW=1 state changes to "ro-1", the input bit data is determined to be "0". Also, the bit signal sw is ro-
After changing to IJ, if the state of 5W=1 continues for 2 seconds or more, the input bit data is determined to be "1". Therefore, correct input of bit data "0" is performed by releasing switch 2 within 2 seconds, and correct input of bit data "1" is performed by releasing switch 2 within 2 seconds or more and less than 5 seconds.

Manual operation is free within this range, and display guidance and recognition display proceed according to this manual operation. This allows both experienced and inexperienced users to input codes reliably. Moreover, the correctness of the input data can be confirmed by the recognition display during operation.

FIG. 6 is an external perspective view of an optical disk device (ODD) according to an embodiment. In the figure, 100 is the main body of the ODD, 21 is an optical disc insertion slot, and 22 is a power switch. Reference numeral 2 denotes an operation switch (electric type), which is originally used for loading/ejecting an optical disc. However, at the same time, it is configured to be operable as a switch 2 according to the present invention. 3 is an LED (three-color type), which originally indicates whether the optical disk is being accessed or not. However, at the same time, it is configured to be operable as an LED 3 according to the present invention.

[Effects of the Invention] As described above, according to the present invention, code information can be reliably input while guiding operation input, preferably by using an existing operation unit, so maintenance and adjustment of electronic control equipment can be performed efficiently. It can be done accurately.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of an electronic control device according to an embodiment of the present invention; FIG. 2 is a flowchart of a processing procedure of the main control means of the embodiment; FIG. 3 is a flowchart of a bit data input processing procedure of an embodiment; 4(A) is a flowchart of the switch interrupt processing of the embodiment, FIG. 4(B) is a flowchart of the timer interrupt processing of the embodiment, FIG. 5 is a timing chart of the input processing operation of the embodiment, and FIG. 6 1 is an external perspective view of an optical disk device (ODD) according to an embodiment. In the figure, l...operation unit, 2...button (touch) switch, 3...light emitting diode-ν (LED), 4...
・Schmitt gate circuit, 5... Inverter circuit, 6
... Edge detection circuit, 7... Peripheral I10 driver circuit, 8... Control section, 9... Main control means, 1
0... Input control means, 11... Utility processing means, 12... Normal processing means, 13... Code buffer (BUFF), 14... Timer enable flag (TMEF), 15... Timer (TM), 16...
・Index count (n), 17...predetermined value (N
). Patent applicant Copal Co., Ltd. Agent Patent attorney Yasunori Otsuka (and one other person) Figure 2 10゜Figure 6

Claims (1)

[Claims] In an electronic control device using microcomputer control, the bit information is determined based on a switch means for operating and inputting a bit signal, and whether or not the duration of the bit signal during operation input is longer than a predetermined time. An electronic control device comprising: a determining means; and a display means for guiding the operation input of the bit signal and displaying the determined state of the bit information.