WO2019155562A1 - Measurement device and measurement device control method - Google Patents

Abstract

This measurement device for measuring characteristic parameters of an internal combustion engine enhances testing efficiency as a result of comprising: a map alarm setting unit (16) for setting, as conditions, a plurality of internal-combustion-engine protection operation ranges each defined using two characteristic parameters; an alarm condition selection unit (17) for selecting at least one of the plurality of conditions; and an instruction unit (stopping instruction unit (18), automatic refueling instruction unit (19), or alarm output instruction unit (22)) for instructing that an internal-combustion-engine protection operation be carried out if a measured characteristic parameter falls within a protection operation range constituting a condition selected by the selection unit.

Description

Measuring device and method for controlling measuring device

The present invention relates to a measuring apparatus that performs tests on an internal combustion engine of a vehicle, a power train, and the like, and a control method for the measuring apparatus.

At the development stage of automobile internal combustion engines and power trains, the test target (test body) internal combustion engine and power train are attached to a test bench (table test machine), and the internal combustion engine and power train have the prescribed power performance. It is common to measure how well it is performing.

Such a measurement system includes a measurement device having an automatic operation schedule creation / execution command output function, a test body (an internal combustion engine or a power train), a load device (dynamo), and a controller that controls the load device. Tests such as an automatic endurance test of a specimen are made possible (see, for example, Patent Document 1).
Furthermore, the measurement system of Patent Document 1 has a processing function for measuring, recording, and detecting abnormality of test information. When the measured value of the specimen exceeds a preset range, it is determined as abnormal, and a test stop process is performed. Can be automatically performed, and the test information immediately before reaching the abnormal state can be recorded.

JP 2006-170741 A

In the above prior art, the torque or speed of the test specimen during the test, the current or voltage of the load device, or the measurement value obtained by combining a plurality of sounds generated from the test specimen, or a measurement value that is a combination of a plurality, is set or measured in advance. It is determined whether the deviation from the measured value is within the allowable deviation setting value, and the presence or absence of abnormality of the specimen is determined by combining this determination result and the abnormality determination result according to the operation time of the operation schedule. Yes.
As a result, the specimen can be automatically stopped (interlocked) as a security function during unattended automatic operation of the measurement system, so that the specimen can be protected.
However, since it is impossible to accurately determine abnormality due to a plurality of correlated parameters in the prior art abnormality determination, it is possible to stop the specimen in a state where it is not necessary to stop it. May not be possible.

In addition, the conventional measurement system does not consider the consumption or deterioration of replacement parts (consumables) such as engine oil that maintains the performance of internal combustion engines and powertrains. It was done by judgment. For this reason, there has been an effect on exhaust gas due to parts deterioration, engine seizure problems, and lower piston operating efficiency. Further, when performing an endurance test on the test body, there is a problem that test interruption occurs due to unnecessary supply or replacement of engine oil, resulting in a decrease in test efficiency.

An object of the present invention is to provide a measuring apparatus and a measuring apparatus control method capable of more accurately performing abnormality determination and improving test efficiency.

In order to solve the above problems, a measuring device for measuring a characteristic parameter of an internal combustion engine according to the present invention includes a setting unit configured to set a plurality of conditions on the safety operation range of the internal combustion engine defined by the two characteristic parameters; A selection unit that selects at least one of the conditions; and an instruction unit that instructs execution of the safety operation of the internal combustion engine when the measured characteristic parameter overlaps the safety operation range of the condition selected by the selection unit; , With.

According to the measuring apparatus and the measuring method of the present invention, it is possible to determine the abnormality more accurately and improve the test efficiency.

It is a schematic structure figure of a measuring system to which a measuring device of an embodiment is applied. It is a functional block diagram of the measuring device of an embodiment. It is a schematic process flow figure of a measuring device. It is a figure which shows the setting screen of a map alarm. It is a figure explaining the detail of the graph area | region in the setting screen of a map alarm. It is a setting figure of the abnormal operation range of an engine in a map alarm setting file. It is a figure which shows the conditions of the security operation | movement in the map alarm setting file. It is a figure which shows the setting screen of an alarm condition. It is a figure explaining the example which performs security operation combining two map warnings. It is a figure explaining the structure file of alarm condition information. It is a flowchart explaining the detail of an alarm determination process. It is a figure explaining the table which an alarm determination part registers. It is a figure explaining the other table which an alarm determination part registers. It is a figure explaining the detail of security operation processing.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a measurement system to which the measurement apparatus according to the embodiment is applied. According to the measurement system of FIG. 1, various performance / endurance tests such as a running fuel consumption test, an exhaust gas test, an output characteristic test, and a deterioration durability test of an internal combustion engine (engine) of an automobile can be performed.

1 includes a measuring device 1, a dynamo 3, a dynamo control panel 4, an exhaust gas analyzer 5, a cooling water temperature controller 6, a lubricant controller 7, a throttle actuator 8, and a fuel temperature controller 9. . The measuring device 1 measures a characteristic parameter of the engine 2.
The measuring device 1 is connected to an engine 2 as a test body and a dynamo 3 as a load device of the engine 2 in a controllable manner. Further, the measuring device 1 controls the dynamo 3 via the dynamo control panel 4 and applies a load corresponding to the traveling load to the engine 2. Further, the measuring device 1 can adjust the throttle opening of the engine 2 via the throttle actuator 8.

The measuring device 1 measures the rotation speed and torque of the engine 2 in operation by a torque detector (not shown). The measuring device 1 can measure the cooling water temperature of the engine 2 via the cooling water temperature controller 6 and can control the circulating flow rate and temperature of the cooling water. Further, the measuring device 1 measures the temperature of the lubricating oil of the engine 2 via the lubricating oil controller 7 and controls the temperature of the lubricating oil to replenish or replace the lubricating oil. Further, the measuring device 1 measures the fuel temperature of the engine 2 via the fuel temperature controller 9 and controls the temperature of the fuel.
The exhaust gas analyzer 5 performs component analysis such as NOx (nitrogen oxide) on the exhaust gas of the engine 2. The measurement data of the exhaust gas analyzer 5 is notified to the measuring device 1.
The display 21 is a display device that is connected to the measurement device 1 and displays a measurement condition setting screen and a warning display during measurement.

Next, the configuration of the measurement apparatus 1 that performs measurement control of various tests of the measurement system will be described.
The measuring device 1 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), an HDD (Hard Disk Drive) and an SSD (Solid State Drive) external storage device, a communication and signal interface, and the like. It is the control computer provided with the hardware.
The measuring device 1 performs data measurement of the engine 2, control of the dynamo 3 and the like by a program executed by the CPU, and travels fuel consumption test, exhaust gas test, output characteristic test, deterioration durability of the internal combustion engine (engine) of the automobile. Various performance and durability tests such as tests can be performed.

FIG. 2 is a functional block diagram of the measuring apparatus 1 realized by a program.
The information storage unit 20 is provided in an external storage device of the measurement device 1, and includes operation pattern information 201 indicating a test procedure, measurement data 202 of the measured engine 2 and power train (not shown), and operation of the measurement device 1. A log file 203 that records a history, map alarm information 204 that defines an abnormal operation range of the engine 2 whose details will be described later, and alarm condition information that is a condition for determining whether or not to perform alarm processing of the engine 2 whose details will be described later 205 is stored.

The sequence control unit 10 is a control unit that controls the measurement timing of the engine 2 and the power train (not shown), the dynamo 3, the throttle actuator 8, and the like based on the operation pattern information 201. The processing history of the sequence control unit 10 is recorded in the log file 203.
The controller control unit 11 is a control unit that gives control instructions to the dynamo control panel 4, the throttle actuator 8, the coolant temperature controller 6, the lubricating oil controller 7, and the fuel temperature controller 9 based on instructions from the sequence control unit 10. .

The data / setting display unit 15 is a display unit that displays measurement data and warning information, and sets operation inputs and measurement conditions for measurement operations. Measurement data, warning information, operation information, and setting information are displayed on the display 21 connected to the measurement apparatus 1.
The map alarm setting unit 16 is activated by the data / setting display unit 15 and performs a map alarm setting process to be recorded in the map alarm information 204. Details will be described later. The map alarm setting unit 16 functions as a setting unit that sets a plurality of conditions for the safe operation range of the engine 2 defined by two characteristic parameters. The map alarm setting unit 16 sets a security operation corresponding to the security operation range for each condition.
The alarm condition selection unit 17 is activated by the data / setting display unit 15 and performs processing for setting alarm conditions to be recorded in the alarm condition information 205. Details will be described later. The alarm condition selection unit 17 functions as a selection unit that selects at least one of the conditions of the plurality of security operation ranges.

The data measurement unit 12 is a processing unit that acquires measurement data of the engine 2 and a power train (not shown) based on an instruction from the sequence control unit 10. The measurement data acquired by the data measuring unit 12 includes rotation speed, shaft torque, intake air temperature, intake air pressure, fuel consumption, exhaust gas pressure, exhaust gas temperature, cooling water flow rate, cooling water inlet temperature, cooling water outlet temperature. These are engine characteristic parameters such as lubricating oil pressure, lubricating oil temperature, and fuel temperature. Note that the characteristic parameter is not limited to the above, and may be a measured value of another arbitrary physical quantity or a value calculated secondarily from an arbitrary measured value.
When conducting a powertrain test, the powertrain torque converter and transmission oil temperature, oil pressure, front wheel rotation difference, rear wheel rotation difference, front and rear wheel rotation difference, etc. are measured.

The alarm determination unit 14 refers to the map alarm information 204 and the alarm condition information 205, and determines the presence or absence of an abnormality in the operating state of the engine 2 and the necessity of the refueling process based on the measurement data acquired by the data measurement unit 12. It is a processing unit.
The data recording unit 13 is a processing unit that records the measurement data acquired by the data measurement unit 12 in the measurement data 202. The data recording unit 13 records the measurement data acquired by the data measurement unit 12 in the log file 203 that records the operation history of the measurement device 1.

The stop instruction unit 18 is a processing unit that performs a stop process of the engine 2 when the alarm determination unit 14 determines whether or not the operation state of the engine 2 is abnormal. More specifically, the stop instruction unit 18 stops the engine 2 when the power of an ECU (Engine Control Unit) of the engine 2 is turned off or the fuel pump is turned off.
Further, the stop instruction unit 18 instructs the controller control unit 11 to stop the regeneration of the dynamo 3 and brakes the engine 2.
Alternatively, the stop instruction unit 18 instructs the controller control unit 11 to perform a free run of the dynamo 3 and causes the engine 2 to perform an idling operation.

The automatic refueling instruction unit 19 is an instruction unit that performs lubricating oil supply processing to the engine 2 when the warning determination unit 14 determines that the refueling processing of the engine 2 is necessary. For example, the automatic oil supply instructing unit 19 instructs the lubricating oil controller 7 to replenish or replace the lubricating oil in the lubricating oil controller 7.
The warning output instruction unit 22 instructs the display 21 to perform a warning display of the operating state of the engine 2. Although details will be described later, according to the operating state of the engine 2, it is not abnormal to stop the engine 2, but a warning display for alerting and a warning display indicating that the engine 2 is in an emergency stop state are instructed. To do. Furthermore, the warning output instructing unit 22 notifies the occurrence of abnormality to the outside via a network (not shown) depending on the urgency level of the warning. Further, the warning output instruction unit 22 may instruct lighting of a warning lamp such as a patrol lamp not shown in FIG.

In the description of the present embodiment, the stop operation and idling operation based on the detection of the abnormal state of the engine 2, the lubrication oil supply to the engine 2, and the warning operation are referred to as a safety operation. The stop instructing unit 18, the automatic refueling instructing unit 19, and the warning output instructing unit 22 function as an instructing unit that instructs the execution of the safety operation when the measured characteristic parameter overlaps the safety operation range of the selected condition. Moreover, the warning determination part 14 functions as a determination part which determines safety operation.

Next, with reference to FIG. 3, an outline of processing of the measuring apparatus 1 in an output performance test for obtaining the relationship between the engine speed and the shaft output of the measuring system will be described.
First, the measuring device 1 performs the processing from step S30 to step S32 as an initial setting.

Step S30 is a step in which the map alarm setting unit 16 (see FIG. 2) sets a map alarm that defines an abnormal operation range of the engine 2 whose details will be described later, and records it in the map alarm information 204 (see FIG. 2). is there.
In step S31, the alarm condition selection unit 17 (see FIG. 2) performs an alarm condition setting process that is a determination condition as to whether or not to perform an alarm process of the engine 2 described in detail later, and alarm condition information 205 (FIG. 2). This is a step of recording in the reference).
In step S32, the CPU of the measuring device 1 is determined for each test such as a travel fuel consumption test, an exhaust gas test, an output characteristic test, a deterioration durability test, etc. of the measurement system. This is a step of acquiring an operation pattern indicating a test sequence in which the time change of the operation condition of the dynamo 3 is determined from the operation pattern information 201 (see FIG. 2).

In step S33, the measuring device 1 starts up the sequence control unit 10 (see FIG. 2) by starting measurement. The sequence control unit 10 starts the engine 2 (see FIG. 1) and starts measurement based on the operation pattern of the operation pattern information 201.

Then, the sequence control unit 10 performs a dynamo control panel via the controller control unit 11 (see FIG. 2) based on the operation conditions of the engine 2, the setting conditions of the throttle actuator 8 and the operation conditions of the dynamo 3 included in the operation pattern. 4. The throttle actuator 8 is controlled to adjust the engine 2 and the dynamo 3 (see FIG. 1) (S34).
The sequence control unit 10 waits until the states of the engine 2 and the dynamo 3 are stabilized as necessary, and proceeds to step S35.

In step S35, the data measuring unit 12 reads the load value of the dynamo 3, the rotational speed of the engine 2, the intake air temperature, the intake air pressure, the fuel consumption, the fuel consumption time, the exhaust gas pressure, the exhaust gas temperature, the cooling water flow rate, Characteristic parameters such as cooling water inlet temperature, cooling water outlet temperature, lubricating oil pressure, and fuel temperature are measured and used as measurement data.

In step S36, the alarm determination unit 14 refers to the map alarm information 204 and the alarm condition information 205, and based on the measurement data measured in step S35, the safety operation of the engine 2 (engine 2 stop operation, idling operation, engine 2), it is determined whether or not to perform lubricating oil supply to 2 and a warning operation).
When it is determined that the safety operation is to be performed, the alarm determination unit 14 determines the operation of the safety operation (the engine 2 stop instruction, the engine 2) according to the alarm type (security function type) set in the map alarm information 204. Idling instruction, automatic lubricating oil supply instruction to engine 2 and warning output instruction).
Details of the processing of the alarm determination unit 14 in step S36 will be described later.

In step S37, the data recording unit 13 records the measurement data acquired in step S35 in the measurement data 202, and records the determined alarm state and the operation history of the measurement device 1 in the log file 203.

Then, in step S38, the sequence control unit 10 determines whether or not the measurement is stopped by notifying the safety operation such as the engine stop in step S36, and if the measurement is stopped (Yes in S38), the process is stopped.
Moreover, the sequence control part 10 progresses to step S39, when it is not measurement stop (No of S38).

In step S39, the sequence control unit 10 determines whether or not the operation pattern acquired in step S32 has ended. If the operation pattern has ended (Yes in S39), the sequence control unit 10 proceeds to step S40.
Further, when the operation pattern is not completed (No in S39), the sequence control unit 10 returns to Step S34 and continues the measurement.

In step S40, the sequence control unit 10 stops the engine 2 and the dynamo 3 (see FIG. 1), and the measuring device 1 ends the measurement.

Next, the map alarm set by the map alarm setting unit 16 (see FIG. 2) in step S30 in FIG. 3 will be described in detail with reference to FIGS. 4, 5, 6A, and 6B.

The map alarm includes the rotation speed, shaft torque, intake air temperature, intake air pressure, fuel consumption, exhaust gas pressure, exhaust gas temperature, cooling water flow rate, cooling water inlet temperature, cooling water outlet temperature measured by the data measuring unit 12. The abnormal operation range of the engine 2 is defined by two characteristic parameters among the lubricating oil pressure, the lubricating oil temperature, the fuel temperature, and the like, and the safety operation is defined corresponding to the abnormal operation range.
By defining the abnormal operation range of the engine 2 using the two characteristic parameters, the abnormal operation determination of the engine 2 can be performed more accurately than when the abnormal operation range is defined by a single characteristic parameter threshold.

FIG. 4 shows a map alarm setting screen displayed on the display 21 by the map alarm setting unit 16.
The measuring device 1 of the embodiment displays each map alarm from MAP1 to MAP10 as a window tab. FIG. 4 shows a window tab (hereinafter referred to as tab 40) of the map alarm of MAP1. The window tabs from MAP2 to MAP10 have the same configuration.
In addition, the measuring apparatus 1 displays a hierarchical display of window tabs (map setting list tabs in FIG. 4) for setting alarm conditions and list of security operations, which will be described later, and window tabs in which MAP1 to MAP10 are combined. .

Hereinafter, the screen configuration of the tab 40 for setting the map alarm of MAP1 will be described.
The abnormal operation range of the engine 2 is set by inputting a characteristic parameter of range information to be determined as normal operation in the range data input area 42 of the tab 40.
Specifically, a normal range in which the engine lubricating oil pressure (Y axis data) is determined to be normal is input as a lower limit value and an upper limit value of the engine lubricating oil pressure for each arbitrary point of the engine speed (X axis data). For example, when the engine speed (X-axis data) is 100, the lower limit value is set to 10 and the upper limit value is set to 60 as the normal range of the engine lubricating oil pressure (Y-axis data).

The type of the two characteristic parameters (X-axis data and Y-axis data) is selected by a list box displayed by pressing the item selection button on the tab 40. In this list box, a list of characteristic parameters measured by the data measuring unit 12 is registered in advance.

In the graph area 43 of the tab 40, the value input in the range data input area 42 is displayed in a graph.
Details of the graph area 43 will be described with reference to FIG.

The upper limit line 434 is obtained by plotting the upper limit value of the range data input area 42 (FIG. 4) of the tab 40 and connecting them with a line. The upper limit line 434 represents the upper limit of the normal operation range regarding the engine speed and the engine lubricating oil pressure.
The lower limit line 435 is obtained by plotting the lower limit value of the range data input area 42 (FIG. 4) of the tab 40 and connecting them with a line. This lower limit line 435 represents the lower limit of the normal operation range regarding the engine speed and the engine lubricating oil pressure.
A region sandwiched between the upper limit line 434 and the lower limit line 435 represents a normal operation range 432 regarding the engine speed and the engine lubricating oil pressure.

When the measurement data is not in the normal operation range (outside the normal operation range 432), that is, when the measurement data is in the upper limit excess region 431 exceeding the upper limit line 434, or when the measurement data does not reach the lower limit line 435 When it is in the reach region 433, it is determined that the engine 2 is in an abnormal operation state.

As will be described in detail later, the map alarm can specify different types of security operations for the upper limit excess area 431 and the lower limit unachieved area 433.
In the graph area 43, the upper limit excess area 431 and the lower limit unachieved area 433 are filled with different colors or displayed with different hatching so that the security actions can be identified for each type of designated security action. .
The normal operation range 432 indicating the normal operation range is also displayed so that it can be distinguished from the upper limit excess region 431 and the lower limit unachieved region 433.

Returning to FIG. 4, the security operation setting area 41 for designating different types of security operations in the upper limit excess area 431 and the lower limit unachieved area 433 will be described.
First, “alarm number” will be described.
In the map alarm, in each of MAP1 to MAP10, the upper limit excess area 431 and the lower limit unachieved area 433 are identified by an alarm number. For this reason, one of alarm numbers 1 to 20 is assigned to the upper limit excess area 431 and the lower limit unachieved area 433.
Each map alarm item described below is set for each alarm number that has been set.

“Type” indicates which information is the upper limit excess area 431 (upper limit) or the lower limit unachieved area 433 (lower limit).
In “ON / OFF”, valid (ON) / invalid (OFF) of abnormal operation determination is set.
In the “discrimination time”, a smoothing time for removing noise from the measurement data is set.
In “Release Delay”, a standby time is set until the measurement process is restarted after the safety operation is performed after determining the abnormality.

In “alarm type”, the type of the safety operation performed when the abnormal operation of the engine 2 is determined is set.
In the measuring apparatus 1 of the embodiment, one of the safety operations of “major failure”, “emergency stop”, “light failure”, “warning”, and “automatic refueling” is set to “alarm type”.
The “serious failure” is a safety operation that stops the engine 2 by regenerating and stopping the dynamo 3 to brake the engine 2 and turning off the ECU and the fuel pump.

“Emergency stop” measures the “serious failure”, detects abnormal operation of the engine 2 and displays the fact that the engine 2 has been stopped on the display 21, and notifies the management department and measurement staff of the occurrence of the abnormality. It is a security action.
“Minor failure” is a safety operation in which the dynamo 3 is free run and the engine 2 is idling. The measuring device 1 can eliminate the abnormal state by free running the dynamo 3 to eliminate the load on the engine 2. In this case, the measuring device 1 may stop the engine 2 after a predetermined time has elapsed.

“Warning” is a security operation that displays on the display 21 that an abnormal operation of the engine 2 has been detected without stopping the engine 2 and displays a warning. In the “warning”, a patrol lamp (not shown) may be turned on.
“Automatic refueling” is a safety operation that causes the lubricating oil controller 7 to perform a lubricating oil supply operation to the engine 2 without stopping the engine 2.
The “alarm type” described above is set by selecting a list box in which the list of security operations is registered in advance.

In the “monitoring condition”, a period for determining whether or not the engine 2 is in an abnormal operation state based on the measurement data is set. When “Always monitor” is set, monitoring is always performed during measurement. When “rotating” is set, monitoring is performed while the engine 2 is rotating.
In “Correction method”, a countermeasure method when an abnormal operation of the engine 2 is determined and a safety operation is performed is input. The inputted countermeasure is displayed on the display 21 during the security operation.

As described above, by setting the upper limit value and the lower limit value regarding the characteristic parameter of the normal operation range of the engine 2, when the measurement data exceeds the upper limit value or when the measurement data does not reach the lower limit value, the engine 2 is determined to be in an abnormal operation state, and the security operation can be executed. That is, registering the lower limit value and the upper limit value related to the normal operation range of the two characteristic parameters is equivalent to defining the abnormal operation range or the safe operation range.

Next, a map alarm configuration file stored in the map alarm information 204 will be described with reference to FIGS. 6A and 6B.
The map alarm configuration file has a format structure in which each of MAP1 to MAP10 and alarm numbers 1 to 20 are sections, and upper / lower limit values, alarm types, and the like are parameters.

FIG. 6A is a diagram of information indicating the setting of the abnormal operation range of the engine in the map alarm setting file.
The [MAP1] section indicating the map alarm of MAP1 described in FIG. 4 includes an alarm number key that specifies alarm numbers assigned to the upper limit excess area 431 and the lower limit unachieved area 433 in order of upper limit and lower limit, and X-axis data. And a Data key indicating the lower limit value and the upper limit value of the normal range of the Y-axis data corresponding to one arbitrary value. The area exceeding the straight line connecting the points indicated by the X axis data and the Y axis data of the upper limit value of the adjacent Data key is the upper limit excess area 431. A region beyond the straight line connecting the points indicated by the X axis data and the Y axis data of the lower limit value of the adjacent Data key is a lower limit unachieved region 433.
The map alarms from MAP2 to MAP10 have the same configuration.

The alarm determination unit 14 refers to the alarm number key in the [MAP1] section to acquire the values “1” and “2”, and the alarm in the [alarm number 1] [alarm number 2] section of FIG. Refer to parameters such as type. That is, the alarm number key is link information of an alarm number assigned to the map alarm.

FIG. 6B is a diagram showing conditions for the security operation in the map alarm setting file.
The set values are recorded as parameters in the [alarm number 1] and [alarm number 2] sections in the security operation setting area 41 that specifies the types of security operations in the upper limit excess area 431 and the lower limit unachieved area 433 in FIG. That is, in the setting file, each item name of the map alarm in the security operation setting area 41 is used as a parameter key, and a setting value is used as a key value.

Next, an alarm condition setting screen displayed on the display 21 by the alarm condition selection unit 17 will be described with reference to FIG.
The alarm condition setting screen of FIG. 7 is a window tab (hereinafter referred to as tab 70), similar to the map alarm setting screen described with reference to FIG.

The tab 70 includes a list display area 71 for security actions and a condition selection area 72 for security actions.
The list display area 71 refers to the map alarm information 204 and displays a list of security operations set in the upper limit excess area 431 and the lower limit unachieved area 433 for each of the map alarms of MAP1 to MAP10.

Specifically, the name of the set security operation is displayed, and different colors are painted and hatched so that the security operation type can be visualized. Here, “emergency stop” and “serious failure” are painted in red, indicating that the urgency of the security operation is high. “Warning” is filled with yellow. “Automatic refueling” is painted orange.
In this way, the alarm type is visualized, and the security operation of each map alarm can be easily grasped without opening a tab for each map alarm.

The security operation condition selection area 72 is a screen for selecting a map alarm as an alarm condition for performing the security operation. The alarm condition defined by the selected map alarm is recorded in the alarm condition information 205 as will be described in detail later.
In the alarm condition information 205, a plurality of alarm conditions are recorded. One is an alarm condition for performing a security operation by a single map alarm, and the other is an alarm condition for performing a security operation by a combination of a plurality of map alarms.

The “No.” column in the condition selection area 72 for the security operation indicates the type of alarm condition. In FIG. 7, four types of alarm conditions of “single setting”, “1”, “2”, and “3” are set. it can.
For each of the four types of alarm conditions, check boxes are arranged corresponding to the map alarms of MAP1 to MAP10. The operator can select a condition by clicking a check box.

In the “single setting” alarm condition, measurement data is included in one of the map alarm security operation ranges (upper limit area 431 and lower limit unreachable area 433) corresponding to the clicked (checked) check box. Sometimes, the measuring device 1 performs a security operation specified by an alarm number corresponding to the area.

Specifically, when the measurement data is included in the security operation range of any one of the map alarms of MAP4, MAP9, or MAP10, the measuring device 1 determines that the upper limit excess region 431 included in this security operation range or the lower limit has not been reached. The security operation set corresponding to the area 433 is performed. For example, when the measurement data is included in the lower limit unachieved region of the security operation range of the MAP 4, the measurement device 1 performs the “warning” security operation.

In each of the alarm conditions of “1”, “2”, and “3”, the map alarm corresponding to the clicked (checked) check box has a security operation range (upper limit area 431 and lower limit unachieved area 433). When the measurement data is included, the measuring device 1 performs the security operation specified by the alarm numbers corresponding to the upper limit excess area 431 and the lower limit unachieved area 433. That is, when the measurement data overlaps with the selected map alarm security operation range, the measuring device 1 performs a security operation corresponding to this overlapped area.
According to these four types of alarm conditions of “single setting” “1”, “2”, “3”, the alarm condition selection unit 17 selects a plurality of safety operation ranges as a condition, or a plurality of safety operation ranges. Can be switched as a condition.

Specifically, under the alarm condition “2” in the “No.” column, when the measurement data overlaps the upper limit exceeded area of the safe operation range of MAP2, MAP3, and MAP7, the measuring device 1 displays “warning”. And “Minor failure” and “Automatic refueling” are performed.
In the following description, four types of alarm conditions of “single setting”, “1”, “2”, and “3” are referred to as logic detection 0, logic detection 1, logic detection 2, and logic detection 3.

As described above, since a plurality of alarm conditions for performing a security operation by at least one map alarm can be set on the same setting screen by checking the check box, the operator of the measuring apparatus 1 can easily set the alarm conditions. It is possible to easily grasp the alarm condition setting.

Here, an example in which the measurement apparatus 1 performs an abnormal operation determination by combining two map alarms and performs a security operation will be described with reference to FIG.
8 shows an upper limit excess region 431, a normal operation range 432, and a lower limit unachieved region 433 regarding the engine speed and the instantaneous fuel flow rate in the map alarm of MAP3. In the lower part of FIG. 8, an upper limit excess region 431, a normal operation range 432, and a lower limit unachieved region 433 relating to the engine speed and the engine lubricating oil pressure in the map alarm of MAP1 are shown.

The white circles in FIG. 8 indicate the case where the measurement data is engine speed: 1500 r / min, engine lubricating oil pressure: 25 kPa, and instantaneous fuel flow rate: 70 L / h.
In the upper MAP3 map alarm, the measurement data is included in the lower limit unreachable area 433, and in the lower MAP1 map alarm, the measurement data is included in the lower limit unreachable area 433.

If the alarm condition is set to be a combination of the map alarm of MAP1 and the map alarm of MAP3, the alarm condition is satisfied. Therefore, the measuring device 1 can secure the alarm type set to the map alarm of MAP1 and the map alarm of MAP3. Perform the action.

The black circles indicate the case where the measurement data is engine speed: 1500 r / min, engine lubricating oil pressure: 125 kPa, and instantaneous fuel flow rate: 150 L / h.
In this case, in the map alarm of the upper MAP3, the measurement data is included in the normal operation range 432, and in the map alarm of the lower MAP1, the measurement data is included in the upper limit excess region 431.

When the alarm condition is set by a combination of the map alarm of MAP1 and the map alarm of MAP3, the measurement data indicated by the black circle is included in the normal operation range 432 of the map alarm of MAP3. 1 does not perform a security operation.

As described above, the measuring device 1 combines the MAP1 map alarm related to the engine speed and the engine lubricating oil pressure and the MAP3 map alarm related to the engine speed and the instantaneous fuel flow rate, thereby combining the engine speed, the engine lubricating oil pressure, and the instantaneous fuel. It is possible to determine the abnormal operation of the engine 2 from the flow rate measurement data and perform a safety operation.

Note that the measuring device 1 may create a map alarm including a three-dimensional safety operation range based on the three engine characteristic parameters of the engine speed, the engine lubricating oil pressure, and the instantaneous fuel flow rate, and perform the abnormal operation determination of the engine 2. Good.
However, by combining the map alarm defined by the two characteristic parameters of the present embodiment, it is possible to determine the abnormal operation of the engine 2 using the three characteristic parameters with a smaller amount of data.

Next, a configuration file of the alarm condition information 205 in which the alarm condition set on the alarm condition setting screen described in FIG. 7 is stored will be described with reference to FIG.
The alarm condition configuration file includes sections “logic detection 0 to logic detection 3” corresponding to the four alarm conditions (FIG. 7) of “single setting”, “1”, “2”, and “3”, and “Mode”. And a format structure with parameters using “Alarm” as keys.

The “Mode” key is set with a parameter indicating the output mode of the security operation. When “single” is set in the “Mode” key, the measurement device 1 will be in that area if the measurement data is included in the security operation range of any one of the selected map alarms. The security action specified by the corresponding alarm number is performed. When “Mode” key is set to “n-Multiple”, the measuring apparatus 1 corresponds to a plurality of areas if all of the security operation ranges of the plurality of selected map alarms are included in the measurement data. The security operation specified by the alarm number is performed, where n of “n-Multiple” represents the number of selected map alarms.

The “Alarm” key is a parameter indicating a logical expression of an alarm condition indicating a combination of map alarms for performing a security operation.
When the “Mode” key is “single”, the alarm determination unit 14 generates a logical expression in which the map alarm clicked on the setting screen of FIG. 4 is connected by “+” that represents a logical sum, and “Alarm” The key value.
When the “Mode” key is “n-Multiple”, the alarm determination unit 14 generates a logical expression in which the map alarm clicked on the setting screen of FIG. The value of the “Alarm” key.

Specifically, the map condition of MAP4, MAP9, and MAP10 is clicked as the alarm condition set by “single setting” in FIG. Therefore, “MAP4 + MAP9 + MAP10” is set in the “Alarm” key in the [logic detection 0] section.
No. in FIG. In the alarm condition “2” in the “column”, “MAP2 * MAP3 * MAP7” is set in the “Alarm” key in the [Logic detection 2] section.

In the above description, an example has been described in which the alarm determination unit 14 generates a logical expression based on the check status of the check box in FIG. 7 and sets it as the value of the “Alarm” key. The logical expression of the “key” may be directly input.

Next, details of the alarm determination process of the alarm determination unit 14 (FIG. 2) in step S36 of the flowchart of FIG. 3 will be described with reference to the flowchart of FIG.
In step S50, the alarm determination unit 14 refers to the map alarm information 204 (FIGS. 6A and 6B) and the alarm condition information 205 (FIG. 9), and acquires a map alarm and an alarm condition.

Next, the warning determination part 14 performs the process of step S52 by the number of map warnings of MAP1 to MAP10 from step S51 to step S53.
In step S52, the warning determination unit 14 determines whether the measurement data is included in the security operation range of the upper limit excess area 431 or the lower limit unachieved area 433 (FIG. 4) for each map alarm.

Specifically, as shown in FIG. 11, the alarm determination unit 14 is designated as an area determination value, an upper limit excess area 431 or a lower limit unachieved area 433 including measurement data, and an area for each map alarm. A table 23 for registering the alarm types is created. In step S52, the alarm determination unit 14 registers a value in the table 23.

For example, in MAP1, the alarm determination unit 14 refers to the alarm number key in the [MAP1] section of the map alarm (FIG. 6A) and acquires values “1” and “2”. Further, the alarm determination unit 14 refers to a parameter such as an alarm type in the [alarm number 1] [alarm number 2] section of the map alarm setting file (FIG. 6B). The alarm determination unit 14 determines whether or not the measurement data is included in the upper limit excess area 431 or the lower limit unachieved area 433 represented by the [MAP1] Data key. In FIG. 11, since the measurement data is not included in the upper limit excess area 431 or the lower limit unachieved area 433, the alarm determination unit 14 sets the area determination to “No” and determines the area type and the alarm type as “None”.

In MAP2, the alarm determination unit 14 refers to the alarm number key in the [MAP2] section of the map alarm (FIG. 6A) and acquires values “3” and “4”. Further, the alarm determination unit 14 refers to a parameter such as an alarm type in the [alarm number 3] [alarm number 4] section of the map alarm setting file (FIG. 6B). The alarm determination unit 14 determines whether or not the measurement data is included in the upper limit excess area 431 or the lower limit unreachable area 433 represented by the [MAP2] Data key. In FIG. 11, since the measurement data is included in the upper limit excess area 431, the alarm determination unit 14 sets the area determination to “Yes” and sets the area type to “exceeding the upper limit”. The alarm determination unit 14 determines the alarm type as “warning” with reference to the [alarm number 3] section of the map alarm (FIG. 6B) corresponding to the upper limit excess area 431.

In MAP3, the alarm determination unit 14 refers to the alarm number key in the [MAP3] section of the map alarm (FIG. 6A) and acquires values “5” and “6”. Further, the alarm determination unit 14 refers to a parameter such as an alarm type in the [alarm number 5] [alarm number 6] section of the map alarm setting file (FIG. 6B). The alarm determination unit 14 determines whether or not the measurement data is included in the upper limit excess area 431 represented by the Data key of [MAP3]. In FIG. 11, since the measurement data is included in the upper limit excess area 431, the alarm determination unit 14 determines that the area determination is “Yes”, the area type is “exceeding the upper limit”, and the alarm type is “Minor failure”.
In addition, since the ON / OFF key of the [alarm number 6] section is off, the abnormal operation determination regarding the lower limit is not set. Therefore, the alarm determination unit 14 sets the area type and the alarm type to “None” even if the measurement data is included in the lower limit unachieved area 433 represented by the Data key of [MAP3].

The alarm determination unit 14 proceeds to step S54 after repeating step S52 for the number of map alarms, and whether or not the alarm condition of step S55 is satisfied for the number of alarm conditions of the alarm condition information 205 in step S54 to step S56. The determination process is performed.

Specifically, as shown in FIG. 12, the alarm determination unit 14 creates a table 24 for registering a determination value as to whether or not to perform a security operation and the type of security operation to be performed for each alarm condition. In step S55, the alarm determination unit 14 acquires a logical expression of an alarm condition indicating a combination of map alarms for performing a security operation for each alarm condition. The logical expression of the alarm condition is the value of the “Alarm” key of the alarm condition information 205 shown in FIG. Further, the alarm determination unit 14 refers to the table 23 to determine whether or not a logical expression of the alarm condition is satisfied, and records the determination value in the table 24.
The alarm determination unit 14 determines that the map alarm is “true” and satisfies the logical expression of the alarm condition when the map alarm area determination value of the table 23 is “Yes”.

For example, in the alarm condition (logic detection 0) of “single setting” in FIG. 7, the alarm determination unit 14 refers to the [logic detection 0] section of the alarm condition information 205 (FIG. 9) and sets the “Alarm” key. As a value, a logical expression “MAP4 + MAP9 + MAP10” is acquired. Then, the alarm determination unit 14 refers to the table 23 (FIG. 11) and acquires the region determination values of MAP4, MAP9, and MAP10. In this case, since MAP4, MAP9, and MAP10 are all “No”, the logical expression is not satisfied. For this reason, the alarm determination unit 14 sets the determination value of logic detection 0 in the table 24 to “No”.

In the alarm condition “2” (logic detection 2) in FIG. 7, the alarm determination unit 14 refers to the [logic detection 2] section of the alarm condition information 205 (FIG. 9) and outputs an alarm as the value of the “Alarm” key. The determination unit 14 acquires a logical expression “MAP2 * MAP3 * MAP7”. And the alarm determination part 14 acquires the area | region determination value of MAP2, MAP3, and MAP7 with reference to the table 23 (FIG. 11). In this case, since MAP2, MAP3, and MAP7 are all “Yes”, the logical expression is satisfied. Therefore, the alarm determination unit 14 sets “Yes” as the determination value of the logic detection 2 in the table 24 (FIG. 12).

The alarm determination unit 14 proceeds to step S57 after repeating step S55 for the number of alarm conditions. Further, the alarm determination unit 14 refers to the table 23 (FIG. 11) for the alarm condition whose determination value in the table 24 (FIG. 12) is “Yes”, and based on the logical expression of the alarm condition, ) Type.

For example, the alarm determination unit 14 obtains the alarm types of MAP2, MAP3, and MAP7 from the logical expression “MAP2 * MAP3 * MAP7” of the logic detection 2 with reference to the table 23. Further, the alarm determination unit 14 sets the security operation type of the table 24 (FIG. 12) as “MAP2” alarm type “warning”, MAP3 alarm type “minor failure”, and MAP7 alarm type “automatic refueling”. Record.

Although not shown, the alarm determination unit 14 determines that the determination value of the alarm condition (logic detection 0) of “single setting” in which the value of the “Alarm” key is “MAP4 + MAP9 + MAP10” is “Yes”. For this, the alarm type of the map alarm whose area determination value in the table 23 (FIG. 11) is “Yes” is obtained and recorded in the type of the security operation in the table 24 (FIG. 12).

Next, the warning determination unit 14 proceeds to step S58, and performs a security operation process based on the type of security operation in the table 24 (FIG. 12). Details of the processing in step S58 will be described with reference to FIG.

After completing the security operation process in step S58, the alarm determination unit 14 determines in step S59 whether the processed security operation is “serious failure” or “emergency stop”, and the safety operation is “serious failure” or “ If it is “emergency stop” (Yes in S59), the process proceeds to step S60. If the safety operation is not “serious failure” or “emergency stop” (No in S59), the alarm determination unit 14 ends the alarm determination process.

In step S60, the alarm determination unit 14 sets the processing state to measurement stop so that the measurement is stopped in step S38 of FIG. And the alarm determination part 14 complete | finishes the alarm determination process of FIG.

Next, details of the security operation process in step S58 of FIG. 11 will be described with reference to FIG.
First, in step S70, the alarm determination unit 14 refers to the table 24 (FIG. 12), and acquires the type of the security operation of the alarm condition determined to perform the security operation.

In step S71, the warning determination unit 14 determines whether or not “emergency stop” is included in the acquired type of security operation. If not (No in S71), the process proceeds to step S73. .
When “emergency stop” is included (Yes in S71), the warning determination unit 14 instructs the stop instruction unit 18 to stop the engine 2 and instructs the warning output instruction unit 22 to output a warning. (S72). Accordingly, the stop instruction unit 18 stops the engine 2. The warning output instructing unit 22 displays a warning indicating that the operation state of the engine 2 is abnormal on the display 21 as an emergency state notification instruction, and causes an abnormality to occur in the management department or measurement staff via a network (not shown). Notice.
Then, the warning determination part 14 complete | finishes the security operation process of FIG.

In step S73, the warning determination unit 14 determines whether or not “serious failure” is included in the acquired type of the security operation, and if it is not included (No in S73), the process proceeds to step S75.
When a “serious failure” is included (Yes in S73), the warning determination unit 14 instructs the stop instruction unit 18 to stop the engine 2 (S74). Accordingly, the stop instruction unit 18 stops the engine 2.
Then, the warning determination part 14 complete | finishes the security operation process of FIG.

In step S75, the warning determination unit 14 determines whether or not the “type of security operation” includes “minor failure”. If not included (No in S75), the process proceeds to step S77.
When “minor failure” is included (Yes in S75), the alarm determination unit 14 instructs the stop instruction unit 18 to perform an idling operation of the engine 2 (S76). As a result, the engine 2 performs an idling operation.
Thereafter, the warning determination unit 14 proceeds to step S77.

In step S77, the warning determination unit 14 determines whether or not “automatic refueling” is included in the acquired type of the security operation. If not included (No in S77), the process proceeds to step S79.
When “automatic refueling” is included (Yes in S77), the warning determination unit 14 instructs the automatic refueling instruction unit 19 to supply lubricating oil to the engine 2 (S78). As a result, the lubricant controller 7 replenishes or replaces the lubricant for the engine 2.
Thereafter, the warning determination unit 14 proceeds to step S79.

In step S79, the warning determination unit 14 determines whether or not “warning” is included in the type of the acquired security operation, and if it is not included (No in S79), the security operation processing of FIG. 13 is performed. finish.
When “warning” is included (Yes in S79), the warning determination unit 14 instructs the warning output instruction unit 22 to display a warning (S80). As a result, a warning is displayed on the display 21 that the operating state of the engine 2 is abnormal.
Then, the warning determination part 14 complete | finishes the security operation process of FIG.

The alarm determination unit 14 determines the type of safety operation in the order of “emergency stop”, “major failure”, “light failure”, “automatic refueling”, and “warning”. Even in this state, protection of the specimen can be prioritized.

In the above description, an example in which a warning process is performed as a security operation when a map alarm for which “warning” is set is one of the combinations of map alarms and is established together with other map alarms. explained.
However, in the alarm conditions combined with the map alarm, if the measurement data satisfies the map alarm for which “warning” is set, even if the other map alarm is not satisfied, the alarm process may be performed as a safety operation. Good.

In the measurement apparatus 1 of the above-described embodiment, the alarm types “emergency stop”, “major failure”, “light failure”, “automatic refueling”, and “warning” assigned to the map alarm are not limited to the map alarm. It explained so that it could be assigned. However, as shown in the alarm condition setting screen of FIG. 7, the alarm type of “automatic refueling” is limited to the four map alarms of MAP7 to MAP10. Furthermore, the alarm conditions of MAP1 to MAP6 and the alarm conditions of MAP7 to MAP10 may be managed as different alarm conditions.
Thereby, the utilization efficiency of a setting screen improves and management of security operation (alarm operation) becomes easy.

In the measurement device 1 of the first embodiment described above, the case where the safety operation is performed based on the measurement data of the engine 2 has been described. However, in the power train measurement system, the safety operation is performed based on the measurement data of the power train. The same can be done.

The present invention is not limited to the embodiments and includes various modifications. The embodiments have been described in detail for easy understanding in the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment.

DESCRIPTION OF SYMBOLS 1 Measuring apparatus 2 Engine 3 Dynamo 4 Dynamo control panel 5 Exhaust gas analyzer 6 Cooling water temperature controller 7 Lubricating oil controller 8 Throttle actuator 9 Fuel temperature controller 10 Sequence control part 11 Controller control part 12 Data measurement part 13 Data recording part 14 Alarm Judgment unit 15 Data / setting display unit 16 Map alarm setting unit (setting unit)
17 Alarm condition selection part (Selection part)
18 Stop instruction section (instruction section)
19 Automatic refueling instruction section (instruction section)
22 Warning output instruction section (instruction section)
20 Information storage unit 201 Operation pattern information 202 Measurement data 203 Log file 204 Map alarm information 205 Alarm condition information

Claims (5)

In a measuring device for measuring characteristic parameters of an internal combustion engine,
A setting unit that sets a plurality of conditions for a safe operation range of the internal combustion engine defined by the two characteristic parameters;
A selection unit that selects at least one of the plurality of conditions;
An instruction unit for instructing execution of the safety operation of the internal combustion engine when the measured characteristic parameter overlaps the safety operation range of the condition selected by the selection unit;
A measuring device comprising: The measuring device according to claim 1,
The setting unit sets a security operation corresponding to the security operation range for each condition,
The measurement device according to claim 1, wherein the instruction unit instructs execution of a safety operation corresponding to the overlapped safety operation range. In the measuring device according to claim 1 or 2,
The measuring apparatus according to claim 1, wherein the safety operation is at least one of a stop operation of the internal combustion engine, an idling operation of the internal combustion engine, supply of lubricating oil to the internal combustion engine, and a warning operation. In the measuring device according to any one of claims 1 to 3,
The selection unit can switch between selecting a plurality of safe operation ranges as a condition or selecting a plurality of safe operation ranges as a condition.
A measuring device characterized by that. A control method of a measuring device for measuring a characteristic parameter of an internal combustion engine,
A plurality of safety operation ranges of the internal combustion engine defined by the two characteristic parameters and a safety function corresponding to the safety operation range are set as conditions,
Selecting at least one of the plurality of conditions,
A control method for a measuring apparatus, comprising: instructing execution of a security function for the condition when the measured characteristic parameter is within the security operation range for the selected condition.

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