JPS6323600B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a centralized warning device that displays a warning of an abnormality in a vehicle, for example, and particularly when a plurality of detection points become abnormal at the same time. The present invention relates to a priority circuit for displaying information on a single display unit in a determined priority order. [Technical Background of the Invention and Problems Therewith] Various centralized warning devices have been devised to notify the driver of burnout of lamps, door ajar, etc. using text, diagrams, etc. These devices either provide a separate display section for each object to be detected or use a drum-type display device 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 furthermore, many accessory parts such as watches are being attached. As a result, the driver's field of vision is expanded, causing distraction, which may have a negative impact on safe driving. Additionally, the increase in the number of detected locations is not limited to those directly related to safe driving that require immediate correction in the event of an abnormality, but also includes locations that only need to be inspected after arriving at the destination. , the display itself is expensive,
There is also considerable waste in the space taken up on the vehicle's dash board and the display mechanism. [Object of the Invention] The present invention uses a single centralized warning display section, displays abnormality of the detected object in text with a small display area, and also prioritizes the detected object according to the degree of danger to safe driving. , and when an abnormality occurs, indicators such as letters and pictures corresponding to the high-level abnormality are displayed, minimizing the proportion of the display area on the dash board and concentrating the driver's attention on one point. The purpose is to contribute to safe driving, eliminate waste of the display mechanism, and use it effectively. [Summary of the Invention] A detection unit is provided in a plurality of objects to be detected, and includes a switch that switches when an abnormality occurs. When the switch is activated, there is a priority circuit that outputs a signal corresponding to the object to be detected that is higher in the priority order, and a letter or picture corresponding to the abnormal location of the object to be detected is output based on the signal from the priority circuit. In a centralized alarm system consisting of a display device that displays indicators such as
OR circuit and above top switch output and above OR
An EXOR circuit with the circuit output as input, multiple OR circuits with one input connected to each of multiple switch outputs except for the top switch above, and two outputs from the upper side of each OR circuit. It consists of multiple EXOR circuits with two inputs in sequence, and
The other input of each OR circuit is connected sequentially to the output of the upper OR circuit, and the output of the uppermost switch and
The present invention is characterized in that each output of the EXOR circuit is derived as an abnormal output corresponding to each switch of the detection section. [Embodiments of the Invention] Examples of the present invention will be described in detail below based on the accompanying drawings. In this example, we take a vehicle intensive warning as an example.
A device that also functions as a clock will be explained. 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-board power supply 1 and operates at all times, and 4 is a detection section, which is installed in correspondence with multiple objects to be detected in the vehicle, and is used in the event of an abnormality. Closing switches 5A to 5N are connected in parallel to the non-power supply side terminal of the key switch 2. 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. Here, the higher rank has higher priority. 7 is a priority circuit according to the present invention, consisting of OR circuits 8B to 8N and EXOR circuits 9B to 9N;
One of the inputs of the circuits 8B to 8N is connected to the switches 5B to 5N, and the other is sequentially connected to the upper output terminals of the circuits 8B to 8N, and the uppermost OR circuit 8
One of the inputs of B is connected to switch 5A. Furthermore, the input of EXOR circuits 9C to 9N is the above OR circuit 8.
Two units from the top of B to 8N are connected in order, 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 object to be detected by the output from the switch 5A and the EXOR circuit, the input terminal A is connected to the switch 5A, and the input terminals B to N are connected to the
They are connected to EXOR circuits 9B to 9N, respectively.
Reference numeral 11 denotes a character generator , which outputs a display signal for displaying the time or a character corresponding to an abnormal location of the object, based on a character signal from the memory circuit 10 or a clock signal from the clock circuit 3 . Reference numeral 12 denotes a display consisting of, for example, a 5×7 dot display tube, the segment terminals of which are connected to the display signal terminals of the character generator 11 , and the grid terminals connected to the clock circuit 3 and the memory circuit 10 . 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. 13 is a gate circuit, AND circuits A1 to A(X)
One of its inputs is connected to the clock circuit 3 , and the other is connected as a common terminal to the output of the AND circuit 14, and the output of the AND circuit 14 allows the clock signal from the clock circuit 3 to The voltage is applied to the character generator 11 . One of the inputs of the AND circuit 14 is connected to the non-power supply side 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 the clock circuit 3 is cut off at the gate circuit 13 . The resistor 16 is a damping resistor connected between the non-power supply side terminal of the key switch 2 and the filament of the display section 12 , and is used to display the time or characters corresponding to 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 in the open state, 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 at a low level, it is output via the NOT circuit 15.
It is applied as a high level to the input of the AND circuit 14, but as a result, the output of the AND circuit 14 becomes a high level, and the AND circuits A1 to A of the gate circuit 13
(X), and the clock signal from the clock circuit 3 is input to the character generator 11 through the gate circuit 13 . 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 in response to a digit shift signal from the clock circuit 3 , the display is lit 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. The output of the OR circuit 8B is applied to one input of the EXOR circuit 9B, but since the switch 5A is open and the other inputs of the EXOR circuit 9B are at a low level, the output of the EXOR circuit 9B is becomes a high level and is applied to input B of the memory circuit 10 . Eventually, 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.
Since it is applied to the AND circuit 14, the AND circuit 1
The output of gate circuit 13 becomes low level, and the output of gate circuit 13 becomes low level.
It is applied to AND circuits A1 to A(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 . In response to the display signal from the character generator 11 , the display 12
Characters corresponding to the location of the abnormality are displayed, allowing the driver to 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
Since 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,
The outputs of the lower circuits below are all high level,
A high level will be applied to all inputs of EXOR circuits 9C to 9N. Also, EXOR circuit 9
The output of B is determined by the output state of the OR circuit 8B and the switch 5A, but as mentioned above,
The output of OR circuit 8B is at a high level, and switch 5
Since A is in an open state and has a low level,
The output of the EXOR circuit 9B becomes high level and is applied to the input B of the memory circuit 10 . After all, in the memory circuit 10, a signal is applied only to the input B corresponding to the high-rank abnormality location of the object to be detected, which has been prioritized, so that the display 12 displays characters corresponding to the high-rank abnormality locations. Ru. If the upper abnormality point displayed here is corrected, the corresponding switch 5B will be in the open state, but the switch 5B corresponding to the lower abnormality point will be in the open state.
Since D is still closed, the display 12 will display 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. . [Effects of the Invention] As described in detail above, the present invention provides a centralized warning display for a plurality of abnormal locations on the display 12 , and when an abnormality occurs in the detected object, the switches 5A to 5A corresponding to the abnormal location are activated. 5N is closed, a signal is applied to the memory circuit 10 via the priority circuit 7 , and a character signal corresponding to the abnormal location from the memory circuit 10 is sent to the display via the character generator 11 . Indicators such as letters or pictures corresponding to abnormal locations are displayed on 12 , and the objects to be detected are prioritized in advance. When abnormalities occur in multiple objects at the same time, the priority order circuit 7 selects the top abnormal points. By applying only the signal corresponding to the storage circuit 10 to the storage circuit 10, and using the signal from the storage circuit 10 to display an index corresponding to the upper abnormality location on the display 12 , the display mechanism can be used effectively. This makes it possible to obtain an excellent effect on safe driving, and also to provide reliable warning at low cost. In particular, the priority circuit 7 is replaced with the OR circuits 8B to 8N.
By connecting and configuring EXOR circuits 9B to 9N, priority can be determined reliably and a signal corresponding to the highest priority abnormality can be output without using complex circuits such as multi-input gate circuits. Even if there are a large number of detection targets, it is only necessary to sequentially connect additional OR circuits and EXOR circuits, which has the advantage of simplifying the configuration. Note that the display device does not need to be electronic as described above; for example, a warning can be issued by stacking light guide panels using stippled displays and illuminating the panel corresponding to the abnormal location. It may also be configured to display. In any case, the priority circuit according to the present invention can provide reliable priority warnings and can be suitable for various types of concentrated warnings.

[Brief explanation of the drawing]

The figure is a circuit configuration diagram showing an embodiment of the present invention. 3 ...Time measurement circuit, 4 ...Detection unit, 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 switch installed on a plurality of objects to be detected, each of which switches when an abnormality occurs, and prioritizing the objects to be detected in advance, and when multiple abnormalities occur, the corresponding plurality of switches are activated. When this occurs, a priority circuit outputs a signal corresponding to the detected object that is higher in the priority order, and an indicator such as a letter or a picture corresponding to the abnormal location of the detected object is determined by the signal from the priority circuit. In a centralized alarm system consisting of a display device, one input of the priority circuit is connected to the highest priority switch output among the switch outputs for abnormality detection.
OR circuit and above top switch output and above OR
EXOR circuit with circuit output as input, multiple OR circuits with one input connected to each of multiple switch outputs except for the top switch above, and two outputs from the upper side of each OR circuit. It consists of multiple EXOR circuits that have two inputs in sequence, and
The other input of each OR circuit is connected to the output of the upper OR circuit in sequence, and the output of the uppermost switch and
A priority circuit in a central alarm system, characterized in that each output of the EXOR circuit is derived as an abnormal output corresponding to each switch of the detection section.