JPS6231309B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that displays both a centralized warning system that warns about abnormalities in a vehicle and the time on the same display section. BACKGROUND ART Various centralized warning devices have been devised to notify the driver of burnout of lamps, door ajar, etc. using text, diagrams, etc. Digital clocks for automobiles are also well known, but in the former, a display section is provided for each object to be detected independently, or a drum-type display device is used to display characters corresponding to abnormal locations. However, now that safety is particularly important, the number of detection points has increased due to safety, and the proportion of the central alarm display unit itself on the dash board has increased, and moreover, many accessory parts such as the above-mentioned watches are being attached. As a result, the driver's field of vision is expanded, causing him to become distracted, which may have a negative impact on safe driving. In addition, the display mechanism of the display unit is not used during normal times, and the increase in the number of detected points as described above is not necessarily directly related to safe driving, which requires immediate correction in the event of an abnormality.
Since parts that only need to be inspected after arriving at the destination are often incorporated, the display itself becomes expensive, and a considerable amount of space is taken up on the vehicle's dash board and the display mechanism is wasted. The purpose of the present invention is to minimize the proportion of the display section on the dash board, thereby concentrating the driver's attention on one point, contributing to safe driving, and eliminating waste of the display mechanism so that it can be used effectively at all times. The present invention provides an automobile clock that can be used for automobiles. The present invention will be described in detail below based on the accompanying drawings. In the figure, 1 is an on-vehicle power supply, 2 is a key switch, 3 is a timing circuit that is connected to the on-vehicle power supply 1 and operates at all times, and 4 is a detection unit, which is installed corresponding to multiple objects to be detected in the vehicle, and is activated in the event of an abnormality. The switches 5A to 5N to be closed are key switches 2.
connected in parallel to the non-power side terminal of the Further, one end of the resistors 6A to 6N is connected to the output sides of the switches 5A to 5N, respectively, and the other end is connected to the negative electrode of the power source 1. 7 is a priority circuit, OR circuit 8B
~8N, and EXOR circuits 9B~9N,
One of the inputs of OR circuits 8B to 8N is switch 5B to
5N, and the other one is sequentially connected to the upper output terminals of the circuits 8B to 8N, and one of the inputs of the highest OR circuit 8B is connected to the switch 5A. Further, the inputs of the EXOR circuits 9C to 9N are connected to each of the OR circuits 8B to 8N, two at a time from the top, and one of the inputs of the highest EXOR circuit 9B is connected to the switch 5A. Reference numeral 10 denotes a memory circuit that outputs a character signal corresponding to the abnormal location of the detected object based on the output from the EXOR circuit, the input terminal A is connected to the switch 5A, and the input terminals B to N are connected to the EXOR circuits 9B to 9B. 9N, respectively. Reference numeral 11 denotes a character generator, which outputs a display signal for displaying the time or characters corresponding to an abnormal location of the detected object, based on a character signal from the memory circuit 10 or a clock signal from the clock circuit 3. For example, 12 is 1
The display consists of a 5 x 7 dot display tube, and the segment terminals are connected to the character generator 11 mentioned above.
The grid terminals are connected to the clock circuit 3 and the memory circuit 10 , respectively.
In response to a shift signal from the clock circuit 3 or the memory circuit 10 , the lamps are turned on in sequence at a high speed, and are visually recognized by the naked eye as characters corresponding to the time or an abnormal location. Reference numeral 13 denotes a gate circuit, which is composed of AND circuits A , 1 to A, 14, the clock signal from the clock circuit 3 is applied to the character generator 11 . One of the inputs of the AND circuit 14 is connected to the non-power terminal of the key switch 2, and the other is connected to the output of the lowest OR circuit 8N via the NOT circuit 15. The clock signal from clock circuit 3 is sent to the gate circuit above.
13 . Also resistance 16
is the non-power side terminal of key switch 2 and the display 12.
This damping resistor is connected between the filaments of the key switch 2 and displays characters corresponding to the time or an abnormal location only when the key switch 2 is closed. Next, the operation in the above configuration will be explained. First, the key switch 2 is closed, and if all the objects to be detected are normal and all the switches 5A to 5N, which are closed when an abnormality occurs, are open, the outputs of the OR circuits 8B to 8N are are all at low level, and therefore the outputs of EXOR circuits 9B to 9N are also all at low level, and no signals are applied to inputs A to N of memory circuit 10 . Furthermore, since the output of the lowest OR circuit 8N is also low level, it is ANDed through the NOT circuit 15.
applied as a high level to the input of circuit 14,
As a result, the output of the AND circuit 14 becomes high level, and the AND circuits A, 1 to A, X of the gate circuit 13
The clock signal from the clock circuit 3 is applied to the character generator 1 through the gate circuit 13 .
1 is input. In this way, a display signal corresponding to the clock signal is applied from the character generator 11 to the segment terminal of the display 12 , and the clock circuit 3
In response to a digit shift signal, the clock lights up in cycles to display the time. Next, if an abnormality occurs in any one part of the object to be detected, for example, the switch 5B corresponding to the abnormal part
is closed, the output of OR circuit 8B becomes high level and is applied to each input of EXOR circuits 9B, 9C and OR circuit 8C. Therefore, the output of the OR circuit 8C becomes a high level and is applied to one input of the OR circuit 8D, and the high level is applied to the lower OR circuits in order.
All outputs of the OR circuit are inverted to high level and EXOR
It is applied to the circuits 9C to 9N, and therefore the outputs of the EXOR circuits 9C to 9N are all at low level. Further, the output of the OR circuit 8B is applied to one input of the EXOR circuit 9B, but the switch 5A is in an open state.
Since the other inputs of the EXOR circuit 9B are at a low level, the output of the EXOR circuit 9B becomes a high level and is applied to the input B of the storage circuit 10 . In the end, a signal is applied only to input B of the memory circuit 10 , and a character signal corresponding to the abnormal location is output. At the same time, the output of the OR circuit 8N, which is at a high level, is inverted to a low level by the NOT circuit 15, and the output of the AND circuit 14 is inverted to a low level by the NOT circuit 15.
, the output of the AND circuit 14 becomes low level, and the AND circuits A and A of the gate circuit 13
1 to A and X. As a result, the clock signal from the clock circuit 3 is cut off, and only the character signal corresponding to the abnormal location is input to the character generator 11 . and the character generator 11
Characters corresponding to the location of the abnormality are displayed on the display 12 in response to a display signal from the vehicle, so that the driver can immediately know the occurrence of the abnormality and its location. Next, if an abnormality occurs in two or more detected objects, for example, the switch 5 corresponding to the abnormality
If B and 5D are closed, OR circuits 8B and 8
The output of D becomes high level, but at the same time the OR circuit 8
The output of B is applied to the OR circuit 8C, and the output of the OR circuit 8D is applied to the OR circuit 8E, so the outputs of the lower circuits are all at high level, and EXOR
A high level will be applied to all inputs of circuits 9C-9N. Further, the output of the EXOR circuit 9B is determined by the output state of the OR circuit 8B and the switch 5A, but as described above, the output of the OR circuit 8
Since the output of B is high level and the output of switch 5A is open, it is low level, so EXOR circuit 9
The output of B becomes high level and is applied to input B of the memory circuit 10 . In the end, a signal is applied to the memory circuit 10 only to the input B corresponding to the higher priority abnormality location of the object to be detected, so the display 12
, the characters corresponding to the top abnormal locations are displayed. If the upper abnormality point displayed here is corrected, the corresponding switch 5B will be in the open state, but since the switch 5D corresponding to the lower abnormality point is still closed, the display 12 will show will display the characters corresponding to the lower abnormality location. In this way, the lower abnormalities are displayed one after another, and if all the abnormalities are corrected, the time will be displayed on the display 12 again, indicating that all detected objects have returned to their normal state. . As detailed above, in the present invention, the display 12 serves both as a time display and a centralized alarm display, and the time is always displayed using a clock signal from the clock circuit 3 .
When an abnormality occurs in the object to be detected, one of the switches 5A to 5N corresponding to the abnormal location is closed, a signal is applied to the memory circuit 10 via the priority circuit 7 , and the signal is output from the memory circuit 10 . When a character signal corresponding to the abnormal location is displayed on the display 12 via the character generator 11 , the detected objects are prioritized in advance and multiple detected objects are displayed. When simultaneous abnormalities occur, the priority circuit 7 applies only the signal corresponding to the upper abnormality point to the memory circuit 10 , and the character signal from the memory circuit 10 is used to write the character corresponding to the upper abnormality point. By configuring the display unit 12 to display the information, it is possible to use the display mechanism effectively, and an excellent effect on safe driving can be obtained.
It is possible to provide reliable warning at low cost.
In addition, the priority circuit 7 is replaced with the OR circuits 8B to 8N.
By connecting and configuring EXOR circuits 9B to 9N, it is possible to reliably determine and output priorities without using a multi-input gate circuit, and even if there are a large number of detection targets, the circuits can be It is only necessary to add it by connecting, which simplifies the configuration.

[Brief explanation of the drawing]

The figure is a circuit configuration diagram showing an embodiment of the present invention. 3 ...Clock circuit, 4 ...Detection section, 7 ...Priority circuit, 10 ...Storage circuit, 11 ...Character generator, 12 ...Display device, 13 ...Gate circuit.

Claims (1)

[Claims] 1. A detection unit consisting of a timing circuit that is connected to the on-vehicle power source and operates at all times, a switch that is installed on multiple detected objects of the vehicle and switches to each one in the event of an abnormality, and a detection section that is configured to prioritize the detected objects in advance. It has a priority circuit that outputs a signal corresponding to the higher priority detected object when an abnormality occurs with multiple detected objects, and a priority circuit that stores multiple character signals and responds to signals to multiple input terminals. a memory circuit that outputs a character signal corresponding to the input terminal (abnormal location of the detected object); a character generator that outputs a display signal corresponding to the time or the abnormal location; and a display from the character generator. It consists of a display device that receives a signal and displays the time or numbers or letters corresponding to the abnormal location, and a gate circuit that passes through and outputs the clock signal of the clock circuit only when a signal is present at the control input terminal, and the gate circuit that passes through and outputs the clock signal of the clock circuit. The circuit consists of multiple OR circuits with one input connected to each of the above-mentioned switch outputs for abnormality detection, and multiple EXOR circuits that sequentially input the outputs of the two OR circuits from the highest priority order. The other input of each OR circuit is sequentially connected to the output of the upper OR circuit, and the output of each EXOR circuit is connected to each input terminal of the storage circuit, and the gate circuit is a priority circuit. The determination output that there is no abnormal signal from the controller is input to the control input terminal, each clock signal output of the clock circuit is used as a signal input, and the output is connected to the signal input terminal of the character generator. An automobile watch which also serves as a central alarm, characterized in that each output of the gate circuit and each output of the memory circuit are commonly connected to each input terminal of the circuit.