JPS5872621A - Abnormality display device of power equipment - Google Patents

Abstract

PURPOSE:To perform early repair of an equipment, by detecting and storing a condition of oil pressure and water temperature, and both displaying abnormality on the basis of a memory in case of abnormality of either oil pressure or water temperature and ceasing operation of the equipment. CONSTITUTION:An oil pressure detector circuit 2 detecting and storing a condition of oil pressure, water temperature detector circuit 3 detecting and storing water temperature, and oil pressure abnormality display circuit 9 displaying each abnormality, water temperature abnormality display circuit 10, alarm circuit 8 and stop mechanism driver circuit 7 are provided. Then a device is constituted in such a manner that when either oil pressure or water temperature is abnormal, operation of an equipment is promptly stopped, while an alarm is generated further only abnormality, causing a stop of operation, is displayed. In this way, a location of trouble can be known and immediately repaired, thus generation of a serious failure in the power equipment can be prevented.

Description

[Detailed Description of the Invention] Auxiliary equipment such as compressors and generators used in factories or work sites are driven by controlling the output of compressed air or electric power according to the demand at the factory or work site. Therefore, the motion drive frequently repeats full-load operation, no-load operation, or medium-load continuous operation, which tends to cause abnormalities in the power equipment, and stoppages due to such abnormalities can lead to work stagnation in factories and work sites. Therefore, the function display systems such as lubricant oil pressure and cooling water temperature of these power equipment are constantly monitored and an 1M alarm is issued when an abnormality occurs.

It is necessary to discover and repair the abnormality at an early stage.

In addition, the internal combustion engine that drives the compressor and generator mentioned above is also
As the load conditions change frequently as the operating conditions of the compressor and generator change, abnormalities are likely to occur.Also, it is important to detect and repair abnormalities in the oil pressure of the internal combustion engine's own lubricating oil and water temperature of the cooling water early. do.

The present invention is capable of displaying abnormal conditions such as a drop in lubricating oil pressure or a rise in temperature of cooling water when abnormal conditions occur during operation of the compressor or power equipment such as the internal combustion engine that drives the compressor. This invention relates to a device that automatically stops the operation of power equipment in an emergency and displays an abnormal state.

In the present invention, the auxiliary device refers to a device that supplies power (energy) to the outside through rotational operation, and includes a lubricating device and a cooling device.

Conventional devices that display abnormalities in internal combustion engines used to drive compressors and generators use circuits that generate signals that indicate the engine's rotational speed, oil pressure, and water temperature as elements that indicate the operating status of the engine. No. 18, which indicates an abnormality in oil pressure and water temperature, is used as an input signal to the OR circuit, and the output signal of the OR circuit drives the stop mechanism drive circuit of the internal combustion bale control, and the alarm generation circuit detects the abnormality. it's shown. However, when the internal combustion engine is stopped by a signal indicating an abnormality in the oil pressure, the water temperature often rises temporarily because the cooling effect disappears as the internal combustion engine stops, and therefore an alarm indicating an abnormality in water temperature is also issued. occurs,
This method has the disadvantage that when inspecting the cause of an abnormality, it is unclear which is the cause of the abnormality.

Fig. ig1 and Fig. 2 show the above-mentioned conventional device.
In the following description, unless otherwise specified, the explanation will be based on positive logic in which the high level of voltage is "1" and the low level is rOJ.

In diagram A1, 1 is a rotation detection circuit that outputs an output when the internal combustion engine is rotating normally (for example, when it is rotating at a predetermined number of revolutions or more), and 2 is a rotation detection circuit that outputs an output when the internal combustion engine is rotating normally (for example, when it is rotating at a predetermined number of revolutions or more). 5 is a water temperature detection circuit that outputs a signal when the water temperature is abnormal (for example, when the temperature exceeds a predetermined value); 4 is a rotation detection circuit. A timer circuit or delay circuit that generates a signal after a predetermined time has elapsed since the signal No. 1 is output,
5 is an AND circuit whose inputs are the output from the oil pressure detection circuit 2 and the output from the timer circuit 4; 6 is an OR circuit whose inputs are the output of the AND circuit 5 and the output of the water temperature detection circuit 3; and 7 is the output of the OR circuit 6. 8 is a circuit that generates an alarm with the output of the OR circuit 6, 9 is a circuit and indicator that indicates abnormality in oil pressure with the output of the AND circuit 5, and 10 is a circuit that drives the internal combustion stop mechanism. This is a circuit and indicator that uses the output of the water temperature detection circuit 5 to indicate abnormality in water temperature.

To explain the operation of the apparatus shown in FIG. 1, first turn on the main power switch (not shown). At this point, the internal combustion engine is not rotating, so the oil pressure signal of the oil pressure detection circuit 2 is "1", which is the same as an abnormal state, but the rotation detection circuit 10 is "0", and the output of the timer circuit 4 is "0", and the AND circuit 5 is in a closed state.

Next, when the starting circuit is operated to start the internal combustion engine, the timer circuit 4 becomes the output "1" after a predetermined period of time has elapsed after the rotation detection circuit 1 outputs a signal. The predetermined time is, for example, a time slightly longer than the time required for the output of the oil pressure detection circuit 2 to change from "1" to "0" at startup. When the output of the timer circuit 4 becomes "1", if the internal combustion 121 is not operating normally, the oil pressure becomes a predetermined value or more, and the output of the oil pressure detection circuit 2 becomes "0". Therefore, timer circuit 4
Even if the output of the AND circuit 5 becomes 11, the output of the AND circuit 5 becomes 0.
” remains.

Next, when the oil pressure detection circuit 2 or the water vA output circuit detects an abnormality during operation between internal combustion types and its output becomes "1", the output of the AND circuit 5 becomes "11", and the oil pressure abnormality display circuit 9 is activated. When the water temperature abnormality display circuit 10 is activated, the output of the OR circuit 6 becomes "1", and the stop@structure drive circuit 7 and the ν alarm generation circuit 8 are driven. Furthermore, when the water temperature rises to an abnormal state and the internal combustion engine stops, the oil pressure also drops and an oil pressure abnormality signal is displayed, making it impossible to determine whether the main cause is the water temperature or the oil pressure even if an immediate inspection is performed. Furthermore, when an inspection is performed after a period of time has elapsed, the water temperature also drops and the abnormal water temperature display disappears.Next, the abnormality display device shown in FIG. 2 will be explained. In the figure, numerals 1 to 10 indicate the same parts as in FIG. 11 is a main power switch; 12 is a reset signal output circuit that outputs a power reset signal for setting a flip-flop 15 to a predetermined stable point when the main power switch 11 is turned on; 1;
Reference numeral 3 designates a flip-flop circuit that is set to a predetermined stable point by the output shaft number - of the reset signal output circuit 12, and set to another stable point by the output of the timer circuit 4.

To explain the operation of the abnormality display device shown in FIG. 2, it is similar to the operation of the abnormality display device shown in FIG. , the flip-frog 16 is set at a predetermined stable point, and the mutual terminal becomes "0". When a starting operation is performed in this state to start the internal combustion engine, the output of the rotation detection circuit 1 becomes "1" and after a predetermined period of time, the output of the timer circuit 4 becomes "1", and the flip-flop 13 becomes "1". Stability point 1. If set to , the Q terminal changes to "1",
It is now possible to display oil pressure abnormalities and water temperature abnormalities. In the case of the abnormality display device shown in FIG. 2, since the flip-flop 13 is used, even if the output of the timer circuit 4 is in the form of a pulse, the inhibiting operation of the AND circuit 5 can be ensured.

However, this abnormality display device also has the same drawback as the abnormality display device shown in Fig. 1 (^).In other words, the water temperature rises and an abnormal state occurs, and when the internal combustion engine stops, the water temperature and abnormality are displayed as well as the oil pressure. An error message is also displayed, making it impossible to determine which is the main cause.

In the abnormality display device shown in FIGS. 1 and 2, when the oil pressure decreases, the oil pressure detection circuit 2 outputs an output to operate the oil pressure abnormality display circuit 9, and the stop mechanism drive circuit 7
works and stops the internal combustion engine. After the engine is stopped, the water temperature temporarily increases due to loss of cooling effect, etc., the water temperature detection circuit 6 is activated, and the water temperature abnormality display circuit 10 is activated.
In the end, it has the disadvantage that it is unclear whether the main cause of failure is oil pressure abnormality or water temperature abnormality, even by looking at the display.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above drawbacks, maintain an abnormality display, display only the true cause of the abnormality, and enable correct recognition of the cause of the abnormality. This purpose is to provide an abnormality display device d that detects an abnormality in the oil pressure and water 64 of an internal combustion engine and displays the abnormality. , a means for storing the water temperature state, a means for displaying an 11 old-E abnormality based on the above memory, a means for displaying a crystal abnormality based on the above memory, and a means for displaying a crystal abnormality based on the above memory. By providing a means for driving a mechanism for stopping the internal combustion engine and a means for generating an alarm, and a means for canceling the above-mentioned memory, there is also a means for displaying only the memory that occurred first among the above-mentioned two memories. This is achieved by providing a.

This invention will be explained based on the embodiment shown in FIGS. 6 to 5.

In Fig. 6, 1 is a rotation detection circuit that outputs an output when the internal combustion engine is rotating normally, 2 is an oil pressure detection circuit that outputs a signal when the oil pressure is abnormal, and 4 is an output signal from the rotation detection circuit 1. 3 is a water temperature detection circuit that issues a signal when the water temperature is abnormal; 5 is a flip-flop 15 to be described later;
11 is a main power switch; 12 is a main power switch 11;
15 is a flip-flop whose set input is the output of the timer circuit 4; 14 is a circuit that locks the output of the AND circuit 5; 15, 14, 15;
is reset by the output of the power supply reset circuit 12. Reference numeral 6 indicates an OR circuit which inputs the output of the flip 70 knob 14.15, 7 indicates a stop mechanism drive circuit which uses the output of the OR circuit 6 to drive the stop mechanism of the internal combustion engine, and 8 indicates a signal using the output of the OR circuit 6. 9 is an oil pressure abnormality display circuit that displays 1 when the oil pressure is abnormal, and 10 is a water temperature abnormality display circuit that displays when the water temperature is abnormal.

The output of the timer circuit 4 is connected to the set terminal S of the flip-flop 16, the mutual terminal of the flip-flop 15 is connected to one input terminal of the AND circuit 5, and the output of the oil pressure detection circuit 2 is connected to the other input terminal of the AND circuit 5. be done. AND circuit 5
The output is connected to the set terminal S of the 7-rip-flop 14, and the oil pressure state is stored in the 7-rip-flop 14. The output of the water temperature detection circuit 5 is connected to the set terminal S of the 7-lip flop 15. The mutual terminals of the seven-lip flop 14 are connected to the oil pressure abnormality display circuit 9 and also to one input terminal of the OR circuit 6.゛Fri Laugh 0 again
The i terminal of the knob 15 is connected to the water temperature abnormality display circuit 10, and is also connected to the other input terminal of the OR circuit NI6.
The output terminal of the OR circuit 6 is connected to a stop mechanism drive circuit 7 and an alarm generation circuit 8. The output terminal of the power supply reset circuit 12 is connected to the reset terminal R of the flip-flops 15, 14.15, respectively.

The operation will be explained below.

In the device of the present invention shown in FIG. 5, when the switch 11 is first turned on, the output of the power supply reset circuit 12 resets the flip-flops 13, 14, and 15 to a predetermined stable point. At this point, the internal combustion engine is not rotating, so the output of the oil pressure detection circuit 2 is "1", but since the mutual terminals of the flip-flop 16 are set to "0", the output of the AND circuit 5 is "0". Therefore, the 7 lip 70 knob 14 is not set, the output of the mutual terminal is "0", the display of the oil pressure abnormality display circuit 9 is off, the output of the water temperature detection circuit 6 is also "0", and the flip 7
Since the 0 knob 15 is not set, the water temperature abnormality display circuit 10
The display has also disappeared.

Next, when the internal combustion engine is started by operating the starting circuit (not shown), the output of the rotation detection circuit 1 becomes "1", and the timer circuit 4 determines the predetermined time (the length is the same as in the case of FIG. 1). ), the output becomes ``1'', the flop 13 is set and inverted, and the output of the mutual terminal becomes ``11''.
We begin monitoring the hydraulic system for abnormalities.

When the oil pressure drops abnormally during internal combustion engine operation, the output of the oil pressure detection circuit 2 becomes "1" and the output of the AND circuit 5 also becomes "1".
”. Then 7 lip-flop 140 set terminal S
When the set signal is input to the switch, the flip 70 knob 14 is reversed, the output of the mutual terminal becomes "1", and the hydraulic abnormality display circuit 9
is activated and displays. Also, the output of OR circuit 6 is also “1”
Then, the stop mechanism drive circuit 7 is driven to bring the internal combustion engine to an emergency stop, and the alarm generation circuit 8 is also driven to issue a bias alarm.

In addition, when the water temperature rises abnormally, the output of the water temperature detection circuit 5 becomes "1", a set signal is input to the flip-flop 15, which is reversed and activates the water temperature abnormality display circuit 10 to display the abnormality of the oil pressure. Stop mechanism circuit 7 as time
and drives the alarm generation circuit 8. In this abnormality display device, the flip-flops 14 and 15 can store abnormal signals, and the outputs of the oil pressure detection circuit 2 and the water temperature detection circuit 1 6 disappear and the
'', the display can continue to be displayed unless the reset circuit 1''1 is operated.

In the abnormality display device according to another embodiment of the present invention shown in FIG. 4, among the abnormal signals generated from the oil pressure detection circuit 2 and the water temperature detection circuit 3, only the abnormal signal generated first is one. Yes,
Items 1, +=]', which can be displayed, 1 to 15 indicate the same items as in FIG.

16 is a prohibition gate that prohibits the display of oil pressure abnormality, 17 is a prohibition gate that prohibits the display of water temperature abnormality, and 18 is a prohibition gate 1.
6.17 Prohibit human power to control input to fli'j) leaf switch.

timer! ! The output terminal of l1S4 is Noritsubu flop 1
Set of 5 y-face svc grounding n1 flip-flop 1
The Q terminal of 3 is one input terminal of the AND circuit 5.
The output terminal of the AND circuit 5 is connected to one input terminal of the inhibit gate 16. The control flop 14 records and corrects the malfunction of the hydraulic pressure, and its set terminal is connected to the output terminal of the inhibit gate 16. The mutual terminals of the flip-flop 14 are connected to the oil pressure abnormality display circuit 9 and are also applied to one input terminal of the OR circuit 6. Further, the Q terminal of the flip-flop 14 is connected to one input terminal of the inhibit gate 17 via one line of the inhibit input control switch 18. The output terminal of the water temperature detection circuit 6 is connected to the other input terminal of the prohibition gate 17, and the output of the prohibition gate 17 is connected to the set terminal S of the flip-flop 15. The flip-flop 15 stores the water temperature state, and its mutual terminals are connected to the water temperature abnormality display circuit 10 and also to other input terminals of the OR circuit 6. The Q terminal of the flip-flop 15 has the other line of the inhibit input control switch 18 and is connected to the inhibit gate 16.
Connected to the other input terminal of the terminal. The output terminal of the OR circuit 6 is connected to a stop mechanism drive circuit 7 and a reward generation circuit 8.

The output of the power supply reset circuit 12 is a 7-lip flop 13,
It is connected to each reset terminal R of 14.15.

Next, the operation of the apparatus shown in FIG. 4 will be explained. In this abnormality display device, when the main power switch 11 is turned on, the 7 liplocks 15, 14 and 15 are reset in the same way as in FIG.
”, the mutual terminal output becomes rOJ. At this point, one input of the inhibit gate 16 or 17 connected to the Q terminal of the flip-flop 14 or 15 is "1".

In this state, the oil pressure detection circuit 2 detects an abnormality and outputs "1".
”, the output of the AND circuit 1lli85 becomes “1” by AND with the mutual terminal output “1” of the flip-flop 13 which is inverted by the output of the timer circuit 4, and the inhibition gate 1 is output.
6 becomes the output "1", the flip-flop 14 is set, the Q terminal output becomes "0", the mutual terminal output becomes "1", and the hydraulic abnormality display circuit 9 and the stop mechanism drive circuit 7 are driven. The alarm generation circuit 8 is activated. The fcQ terminal output opens the inhibit gate 17 via the inhibit input control switch 18. In this state, the output of the water temperature detection circuit 6 is "1"
Even at this time, the output of the inhibit gate 17 remains "0" and the p7 lip-flop 15 is not inverted, so the water temperature abnormality display circuit 10 is not displayed and only the oil pressure abnormality display circuit 9 is displayed.

When the water temperature detection circuit 5 first detects an abnormality and outputs "1", the 7 flip-flop 15 is set and the mutual terminal output becomes "1", and the water temperature abnormality display circuit 10 is displayed and the flip-flop is The output "0" of the Q terminal of the gate 15 becomes the inhibit input of the inhibit gate 16 via the inhibit input control switch 18. In this state, the output of the oil pressure detection circuit 2 is “1”.
'', the output of the narrowing gate 16 is ``0'', the Noritsubu flop 14 is not inverted, the oil pressure abnormality display circuit 9 is not displayed, and only the water temperature abnormality display circuit 9 is displayed.

By doing this, only the inside of the true abnormality bag is displayed. Furthermore, by opening the prohibition input control switch 18 in advance, the apparatus shown in FIG. 4 can display all the alarms outputted in the recess g as shown in FIG.

In another abnormality display device according to the invention shown in FIG. 5, numerals 1 to 15 indicate the same ones as in FIG. 16 is 7
17 is an inhibit gate which uses the mutual terminal output of flip-flop 14 as one input signal input;
The prohibition gate whose terminal output is the input No. 100 input, 18' is the prohibition human power 1ff]] control switch, and the prohibition gate 16
The output of the inhibit gate 17 is connected to the other input terminal of the inhibit gate 17 via an inverter 19, and the output of the inhibit gate 17 is connected to the other input terminal of the inhibit gate 16 via an inverter 19'.

Other connections are the same as in FIG. 4.

In the abnormality display device shown in FIG. 5, when the main power switch 11 is turned on, 7 lip flops 7'15, 1
4.15 is reset to a predetermined stable point and each 7
The mutual terminal output of the lip 70 tube becomes "0". And since the signal inputs of prohibition gates 16 and 17 are "0",
The outputs of the Soji gates 16 and 17 become "0", and the output of the inverter 19.degree. 19' becomes "1".

At this time, the oil pressure increases abnormally and the output of the oil pressure detection circuit 2 becomes "
When the signal becomes "1", the flip-flop 14 is set and n1 is inverted, and the mutual terminal output becomes "1".

Since the input of the prohibition gate 16 is "1", the output of the prohibition gate α6) is "1". At the same time, inverter 1
The output of the gate 9 becomes "0" and the inhibition gate 17 is closed. Ode circuit 6 due to output “1” of prohibition gate 16
When the output becomes "1", the stop mechanism drive circuit 7 and the alarm generation circuit 8 are activated, and the internal combustion engine is urgently stopped and an alarm is issued. Further, the output of the prohibition gate 16 is input to the oil pressure abnormality display circuit 9 to display the oil pressure abnormality.

Next, when the internal combustion engine stops or the water temperature rises abnormally due to other reasons, the output of the water temperature detection circuit 6 becomes "1", the flip-flop 15 is set and reversed, and the mutual terminal output is 11'', but since the prohibition gate 17 is in a quiet state as mentioned above, the prohibition gate 17
The output remains "0" and the water temperature abnormality display circuit 10 is not driven.

Similarly, if the water temperature rises abnormally first, the flip-flop 15 is set and the flip-flop 15 is reversed.
The mutual terminal output becomes "1", and the output of the inhibition gate 17 becomes
r, IJ, and set the output of the OR circuit 6 to "1". Then, the stop mechanism drive circuit 7 and the retaining shaft generating circuit 8 are driven, and the water temperature abnormality display circuit 10 is activated. The output "1" of the prohibition gate 17 is inverted by the inverter 19' and the prohibition gate 16 is closed via the prohibition input control switch 1g. Next, even if the oil pressure becomes abnormal and the 7 lip 70 knob 14 is reversed, the output of the inhibition gate 16 remains "0" and the oil pressure abnormality display circuit 9 is not activated.

By doing this, when the oil pressure or water temperature becomes abnormal, each signal is memorized, and only the abnormality that occurred first is displayed, and the abnormality that occurs later is not displayed, and the main cause of the abnormality can be understood. can do.

If the inhibit input control switch 18' is turned off from the beginning, full display can be performed as in FIG. 3. Also, if you turn off the inhibit input control switch 18' while an error is displayed,
．． 17 is opened, and all abnormalities can be displayed according to the status of the clip 70 tabs 14 and 15 that store abnormalities.

Although we have explained above about abnormalities in oil pressure and water temperature, it is not limited to these, but any number of abnormalities can be displayed, and if there are three or more abnormalities, the flip-flop will be displayed according to the number of abnormalities displayed. All you need to do is add a block and a prohibition gate.

It is also possible to control with negative logic instead of positive logic, and S
The present invention also includes the use of other 7-lip-flops such as TK flip-flops in place of the I'j flip-flops. Furthermore, it is applicable not only to abnormality indications of internal combustion engines but also to general multiple status indications, and can be used in combination with other sequence circuits and automatic control circuits. Furthermore, it has the advantage that it can be used even if it is inserted into a conventional abnormality display device.

In the above embodiments, the rotation speed of the internal combustion engine itself, the oil pressure of the lubricating oil, and the temperature of the cooling water are detected and the internal combustion engine is stopped in the event of an abnormality. In power equipment that is operated in a continuous manner, the compressor 0. The present invention can also be applied to an embodiment in which the engine speed, cooling water temperature, and lubricating oil oil pressure are detected, and an internal combustion engine or motor is brought to an emergency stop in the event that an abnormality occurs in any of these.

As explained in detail above, the present invention provides a compressor driven by an internal combustion engine or a motor, or an internal combustion engine that should drive the compressor, which supplies power (energy) to the outside and which itself has a yQ sliding device. and a cooling device, a means for detecting the oil pressure state, a means for storing the oil pressure state, a means for displaying an oil pressure abnormality based on the memory, a means for detecting the water temperature state, and a water temperature state. means for displaying an abnormal water temperature based on the memory; means for driving a mechanism for stopping the operation of the power equipment based on at least one of the memories; It is a device that detects the oil pressure and water temperature states respectively when the power equipment is in operation, stores the detected oil pressure state and water temperature state, and releases the oil pressure or water temperature. If there is an abnormality, the system displays the abnormality in oil pressure or water temperature based on the memory, and also stops the operation of the power equipment, so that when an abnormality occurs in either water temperature or oil pressure, the equipment can be started quickly. It is possible to prevent serious failures of power equipment by stopping the equipment, identifying the abnormal part that caused the shutdown according to the display, and making early repairs possible.

Furthermore, due to the existence of the memory means, even if the oil pressure and water temperature signals disappear due to the stoppage of the power equipment, the memory continues to display the location of the abnormality, making it possible to accurately confirm the location of the abnormality. After repair, by clearing the memory, the display circuit returns to its original state before the power equipment started operating.

Furthermore, in the present invention, by making it possible to display only the memory that occurred earlier among the self-memories of the memory means, the operation of the power equipment is stopped due to an abnormality in either the oil pressure or the water temperature, and then Even if the other detection signal indicates an abnormality due to the stoppage of the power equipment, this will not be displayed, so there is no risk of misidentifying an abnormal situation in the driving status of the power equipment.

[Brief explanation of drawings]

1 and 2 are schematic diagrams of a conventional abnormality display device, and FIG. 5 is a mechanical diagram of an abnormality display device according to an embodiment of the present invention. 4 and 5 are schematic diagrams of an abnormality display device according to another embodiment of the present invention. Not shown in the diagram: 1 is an internal combustion engine rotation detection circuit 2 is an oil pressure detection circuit 6 is a water temperature detection circuit 4 is a timer circuit 7 is a stop mechanism drive circuit 8 is an alarm generation circuit 9 is an oil pressure abnormality display circuit 10 is a water temperature abnormality display circuit 13 .14.15 is a flip-flop 16. 17 is an inhibit gate 18, and 18' is a constriction input control switcher.〇Figure 1 Figure 2 33! f Figure 4 Procedural Amendment (Eiguan) May 21, 1939 Haruki Shimada, Commissioner of the Japan Patent Office 1 Indication of the case 1981 Patent Application No. 171790 2 Name of the invention Abnormality display device for power equipment 5 Amendment Representative Masao Ishida Agent 〒102 & Contents of amendment (1) In the first line of page 9 of the specification, the phrase “Mi terminal?” has been replaced with “Q
``The terminal is'' corrected. (2) On page 15, line 19 of the specification, replace "4 terminals" with "
Correct it as "Q terminal". (8) The phrase "forbidden input" in the third line of page 18 of the specification is corrected to "prohibited input." (4) On page 20, line 17 of the specification, the phrase "output '1'" is corrected to read "output '1'is". 1

Claims (1)

[Scope of Claims] (1) An abnormality display device that detects abnormalities in oil pressure and water temperature of power equipment such as internal combustion engines and compressors and displays the abnormality, including means for detecting the oil pressure state and means for storing the oil pressure state. , means for displaying an oil pressure abnormality based on the above memory, means for detecting a water temperature state, and means for storing a water temperature state;
means for displaying an abnormal water temperature based on the above memory; means for driving a mechanism for stopping the operation of the power equipment based on at least one memory of each of the above; and means for canceling each of the above memories. An abnormality display device for power equipment, which is characterized by a failure. (2) The abnormality display device for power equipment according to claim 1, wherein flip-flops are used as the means for storing the oil pressure state and the means for storing the water temperature state, respectively. (8) An abnormality display device that detects abnormalities in oil pressure and water temperature of power equipment such as internal combustion engines and compressors and displays the abnormality, including means for detecting the oil pressure state, means for storing the oil pressure state, and a means for detecting the oil pressure state based on the above memory. means for displaying a hydraulic pressure abnormality, means for detecting a water temperature state, and means for storing a water temperature state;
The above-mentioned No. 1 includes a means for displaying an abnormal water temperature based on the above-mentioned memory; a means for driving a mechanism for stopping the operation of the power/controller based on at least one of the above-mentioned memories; This is an abnormality display device for power equipment, which is patented as having means for displaying only the memory that occurred earlier, and means for canceling each of the above-mentioned memories. (4) An abnormality display device for power equipment according to claim 6, characterized in that a flip-flop is used as the means for storing the oil pressure state and the means for recording the water temperature state. . (A prohibition gate and a prohibition input 1till T are used as a means to display only the memory that occurred first among the five memories.
An abnormality display device for power equipment according to claim 3 or 4, characterized in that four switches are used. (6) An abnormality display device for power equipment according to claim 84, characterized in that a prohibition gate is provided on the input side of the flip 70 knob. (γ) An abnormality display device for power equipment according to claim 4, characterized in that a prohibition gate is provided on the output side of the flip-flop.