JP3827929B2 - Automotive exhaust gas measurement system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automobile exhaust gas measurement system capable of automatically (unattended) measuring exhaust gas discharged from an automobile engine.
[0002]
[Prior art]
As an automobile exhaust gas measurement system for measuring components such as hydrocarbons (HC), nitrogen oxides (NO _x ), carbon monoxide (CO), carbon dioxide (CO ₂ ) contained in automobile engine exhaust gas, a chassis has been conventionally used. The vehicle mounted on the dynamo device is driven by the automatic vehicle driving device according to the driving mode, the exhaust gas discharged at that time is collected by a constant volume sampling device, and the collected sample gas (exhaust gas) is taken as the measurement principle. Some of them are supplied to a gas measuring device equipped with a plurality of different gas analyzers to measure each of the components, and the measurement result is managed by an automobile exhaust gas measurement management device.
[0003]
[Problems to be solved by the invention]
However, in the conventional automobile exhaust gas measurement system, when performing a plurality of measurements, regardless of a single measurement, a human must always execute it, and automatic measurement cannot be performed. And in this kind of automobile exhaust gas measuring device, among the various devices, there is one that warms up the chassis dynamo device before the measurement or cools down after the measurement. The cooling down time is considerably long depending on the apparatus, and so-called setup other than the original measurement may take a longer time than the measurement, and these setups must be performed manually. Therefore, in the conventional automobile exhaust gas measurement system, an arbitrary number of measurements cannot be performed automatically (unmanned) at an arbitrary time.
[0004]
In the conventional automobile exhaust gas measurement system, particularly when the mode operation is performed for a long time, a plurality of workers may share and manage one automobile exhaust gas measurement system. It has been difficult for the worker who has been managing the above to convey the inconveniences, improvements, changes in the set values, and the like that he / she has noticed to the subsequent workers. In other words, for exchanging information between workers, it has traditionally been necessary to fill in a message on a memo paper with a sticky part and paste a lot of it on the desk. In addition to being unavoidable, there were also problems such as the loss of memo paper.
[0005]
In addition, when an automobile exhaust gas measurement device is operating automatically (unattended), it may be inadvertently operated by operating an automobile exhaust gas measurement system without knowing that a third party who is not familiar with the situation is operating automatically. Sometimes exhaust gas measurement was interrupted.
[0006]
The present invention has been made in consideration of the above-mentioned matters, and its purpose is to improve the method of information transmission in an automobile exhaust gas measuring device, particularly when performing exhaust gas measurement automatically (unmanned), and It is to provide a useful automobile exhaust gas measurement system that reduces communication mistakes by displaying the communication items in the system in a reliable and attractive manner.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, an automobile mounted on a chassis dynamo device is caused to travel on a roller of the chassis dynamo device by an automobile automatic driving device according to a running mode, and exhaust gas discharged at that time is collected. In the automobile exhaust gas measurement system in which the collected sample gas is measured by the gas measurement device and the measurement result is managed by the automobile exhaust gas measurement management device, the exhaust gas measurement scheduling , the chassis dynamo device warm-up and A function for setting and managing the operation schedule of exhaust gas measurement by a plurality of test modes including the adjustment of the automatic driving apparatus of the automobile , and on / off control of power of each device in the system corresponding to the set operation schedule of exhaust gas measurement A schedule management device with a function to manage Provided separately from the automobile exhaust gas measuring management device, further, the schedule management device, freely write contacted regarding the exhaust gas measured on the screen, and the written the communication matter, list of the operation schedule at the same time has the function of governing the formation of a display screen to be displayed, and characterized in that so as to perform the transfer of signals between the schedule management device and the automobile exhaust gas measuring management apparatus (claim 1).
[0008]
According to the above configuration, not only vehicle exhaust gas measurement in a plurality of modes can be performed according to the operation schedule, but also a display screen is displayed simultaneously with a list of exhaust gas measurement operation schedules by the schedule management device, which is left behind by the previous worker. Therefore, the operator after sharing the system can surely and easily obtain important communication items regarding the exhaust gas measurement being performed by viewing this display screen. Further, the situation where the memo paper is lost as in the conventional case is not reached, and the workers can communicate with each other reliably and in a good-looking manner. That is, the efficiency and labor saving of exhaust gas measurement are promoted.
[0009]
In order to achieve the same object as described above, the second invention is to collect the exhaust gas exhausted at the time when the vehicle mounted on the chassis dynamo device is driven on the roller by the automatic vehicle driving device according to the driving mode. In the automobile exhaust gas measurement system in which the collected sample gas is measured by the gas measurement device and the measurement result is managed by the automobile exhaust gas measurement management device, the exhaust gas measurement scheduling , the chassis dynamo device warm-up and A function for setting and managing the operation schedule of exhaust gas measurement by a plurality of test modes including the adjustment of the automatic driving apparatus of the automobile , and on / off control of power of each device in the system corresponding to the set operation schedule of exhaust gas measurement function which is responsible for, as well as, on-screen contact matters related to exhaust gas measurement Freely writable, and has a function for governing the formation of a display screen for displaying the written the communication matter simultaneously with a list of the operation schedule, characterized in that remembering the automobile exhaust gas measuring management device ( Claim 2).
[0010]
In the case of having a function of saving the contents recorded on the display screen and leaving it as a record, (Claim 3) a past repair record or the like can also be written, and what kind of repair has been performed in the past. It is also possible to consider the characteristics of the automobile exhaust gas measurement system. That is, maintenance performance can be improved by leaving a past record such as a repair log.
[0011]
In addition, depending on the method of use, it may be necessary to display a “continuous operation” or “prohibit entry to the test room during automatic operation” to a third party so as not to perform an operation that hinders automatic operation. It is also possible to warn. That is, trouble can be prevented from occurring.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 schematically shows an example of the configuration of an automobile exhaust gas measurement system according to the present invention. In this figure, reference numerals 1 and 2 denote an automobile exhaust gas measurement management device (not shown) provided in a measurement chamber (not shown). Hereinafter, it is a measurement management device) and a schedule management device (hereinafter referred to as a scheduler), each comprising an appropriate computer such as a personal computer, and provided with display units 1a and 2a for displaying various data. The measurement management device 1 and the scheduler 2 are connected by a wired LAN 3 so that data can be exchanged between them.
[0013]
4, 5, 6 a, and 7 a are controls for a gas measuring device, a constant-capacity sampling device (CVS), and a chassis dynamo device 6 that are provided in a test chamber (not shown) that is airtightly separated from the measurement chamber. And a control unit of the automobile automatic driving device 7, which is connected to the measurement management device 1 by the LAN 3. In the following, the measurement room and the test room may be collectively referred to as a cell.
[0014]
Reference numeral 6b denotes a chassis dynamometer provided in the test chamber, which is controlled by a chassis dynamometer control unit 6a. A driving wheel 8a of the automobile 8 to be tested is placed on the roller 6c. Reference numeral 7b denotes an automatic driving robot of the automatic vehicle driving device 7, which is set in a driver's seat of the vehicle 8 by an appropriate method, and is controlled by a signal from the automatic driving device controller 7a.
[0015]
The measurement management device 1 performs various test modes stored in the measurement management device 1 on the basis of a command from the scheduler 2 to collect and manage measurement data. , CVS 5, chassis dynamo device 6, automatic vehicle driving device 7, issue control signals via LAN 3, operate them, and perform various operations based on signals output from these devices 4 to 7, for example, Based on the signal from the gas measuring device 4, the concentration and amount of the measurement target component are calculated, and the calculation result is stored as measurement data. In addition to the test mode, the database of the measurement management apparatus 1 stores shift type information of the automobile 8 used for the test, event information whether to use the CVS 5, vehicle information, and the like. Yes. The function of the scheduler 2 will be described later in detail.
[0016]
The gas measuring device 4 is equipped with a plurality of gas analyzers having different measurement principles, and HC, NO _x , CO, CO ₂ contained in the engine exhaust gas G based on a command from the measurement management device 1. Each component such as can be measured separately, and the measurement data is sent to the measurement management device 1.
[0017]
The CVS 5 samples the exhaust gas G diluted with the dilution air A based on a command from the measurement management device 1 as a sample gas S at a constant volume, and provides a flow signal measured by the CFV 16 or the like. It is sent to the measurement management device 1.
[0018]
Further, the chassis dynamo device 6 is controlled by a command from the measurement management device 1 and places driving wheels (a front wheel in the example in the figure) 8a of the automobile 8 to be tested on the roller 6c to generate power absorption. Therefore, an output from a speed sensor or a torque sensor (none of which is shown) provided on the roller 6c is sent to the measurement management device 1.
[0019]
The automobile automatic driving device 7 automatically drives the vehicle 8 in a predetermined driving mode based on the driving pattern of the driving mode (test mode) from the measurement management device 1.
[0020]
In FIG. 1, 9 is an engine cooling fan provided in front of the automobile 8. A large display panel 10 is provided in the test room so that it can be seen from the measurement room. Based on the signal from the scheduler 2, unmanned operation / manned operation, engine speed, vehicle speed, boost pressure, various alarms, etc. are displayed. The
[0021]
In FIG. 1, reference numeral 11 denotes a span gas concentration setting personal computer, which is connected to the measurement management device 1 and the scheduler 2 via the LAN 3. Further, 12a, 12b, 12c,... Are incidental facilities provided in the test chamber, and in this embodiment, air conditioning facilities, alarm devices, and fire extinguishing facilities are illustrated. These facilities 12a,... Are controlled or managed by the scheduler 2.
[0022]
FIG. 2 schematically shows an example of the configuration of the main hardware part in the automobile exhaust gas measurement system. In this figure, 8b is an engine of the automobile 8, and 8c is an exhaust pipe connected to the engine 8b. An exhaust gas flow path 13 is connected to the exhaust pipe 8c, and a pipe 5a of the CVS device 5 is connected to the downstream side thereof. The upstream side of the pipe 5a is connected to a dilution air supply path 15 having a dilution air purifier (hereinafter referred to as DAR) 14, and the exhaust gas G from the engine 8b is appropriately diluted with the dilution air A. Is done. Further, the pipe 5a is provided with a critical flow venturi (CFV) 16 and a suction blower 17 on the downstream side thereof, and a sampling unit for collecting the exhaust gas G diluted slightly upstream of the CFV 16 as a sample gas S A gas sampling pipe 18 provided with 18a is connected, and the sample gas S is collected at a constant volume. In addition, 19 is an atmospheric bypass port provided in the dilution air supply path 15, and 20 is an opening / closing valve thereof.
[0023]
Next, the function of the scheduler 2 will be described with reference to FIGS. This scheduler 2 controls the setting and scheduling of exhaust gas measurement in an automobile exhaust gas measurement system, and controls the power on / off of each device in the system, and also has a display function of analysis results and a management function of span gas concentration. I have.
[0024]
That is, the scheduler 2 can input an annual calendar (equipment plan) of the automobile exhaust gas measurement system. As shown in FIG. 3, for example, an operating schedule (including holidays) 21 for 8 days is shown on the display unit (screen) 2 a, and clearly shows operating days, holidays, end, and unmanned operation. The scroll bar 22 can be used to scroll on a weekly basis. This screen is also provided with buttons 23 such as “Copy”, “Paste”, “Apply”, “Cancel”, “Unattended operation”, “Stop operation”, etc. Can be edited.
[0025]
Then, the scheduler 2 turns on / off each device according to the difference of working days / holidays / long-term suspension set in the annual calendar, STBY (standby) / PAUSE of the analyzer of the gas measuring device 4, and the chassis dynamo device 6 warm-up and adjustment of automatic operation robot 7b of the (RO _- Adjust) can be set as shown in FIG. 4, for example. FIG. 4 shows an example of input of an automation table (equipment state) for morning and evening regular work. Therefore, the scheduler 2 outputs a contact signal for each power supply or issues a command to the measurement management apparatus 1 as shown in FIG. 5 showing a signal flow for power-on. In FIG. 5, 24 is an uninterruptible power supply.
[0026]
The scheduler 2 inputs a test sequence as shown in FIG. The contents input here include, for example, as shown in FIG. 7, the test mode stored in the measurement management device 1, shift type information, event information whether or not to use the CVS 5, vehicle information, etc. (Refer to (A) in the figure), specify whether to perform various calibrations (see (B) in the same figure), specify whether to specify distance units and whether to perform continuous measurement. For example (see FIG. 5C). When a plurality of tests are sequentially performed, editing is performed on the test mode editing screen shown in FIG.
[0027]
Furthermore, when an abnormality or failure occurs in each device or facility in the system, the scheduler 2 receives and inputs an alarm signal from an abnormality detector or alarm provided in each device or the like. Based on the signal, it has functions such as displaying the contents of the abnormality that has occurred, issuing a command for processing the abnormality, and recording the alarm contents in a database. FIG. 9 shows an example of a signal flow related to an alarm in the system.
[0028]
FIG. 10 shows an example of the display screen of the scheduler 2 during the test. In this example, the screen is divided into two screens 25A and 25B. Then, on the left screen 25A, the test mode names are displayed in order from the top in accordance with the scheduled execution order as indicated by reference numeral 26, whereby the operation schedule list Ls is displayed. In addition, the list display Ls of the operation schedule indicates a currently-executed one by adding a pointing mark 27 to a currently-tested one.
[0029]
The two test mode names 26 displayed at a position higher than the pointing mark 27 are surrounded by a thick frame 28 and the inside thereof is colored, so that these two test modes have already been completed. Is shown. On the other hand, the three test mode names 26 displayed at positions lower than the pointing mark 27 are surrounded by a simple frame 29. Therefore, the user can confirm that the two test modes above the mark M have already been tested at this point, the test mode with the mark M is the currently running test, and the bottom three test modes are It can be understood at a glance that it is a test to be performed, and the visibility can be improved accordingly.
[0030]
On the other hand, each information in the test is displayed on the screen 25B on the right simultaneously with the display contents and the operation schedule list Ls. In the example of FIG. 10, the tag 30 for indicating “end result” is selected, and the results R ₁ and R _{2 of the} finished test are displayed. In the case of this example, the test results R ₁ and R ₂ are both “OK”, indicating that the test is proceeding smoothly.
[0031]
FIG. 11 shows another example of the display screen of the scheduler 2 during the test. In this example, the tag 30 for indicating “memo” is selected on the display screen 25B on the right side, and communication by the operator is performed. A memo screen N on which items are freely written is displayed. This memo screen N allows you to freely write notifications regarding exhaust gas measurement as if you were leaving a memo in the notebook. In this example, a third party is told that “! Continuous operation! No access to the test room during automatic operation” writing the message N ₁ in large letters that. That is, it is possible to prevent an unnecessary trouble from occurring such as a third party operating the scheduler 2 by mistake to stop automatic operation or changing a set value.
[0032]
In addition, on the memo screen N, a work message N ₂ is written as “Work memo: Attention! The switch at the entrance to the underground inspection port is turned off during dynamo inspection”. Therefore, the worker can surely know the precautions from the previous worker by looking at the messages N ₁ and N _2, and can prevent the occurrence of inconvenience due to a contact error between the workers. In particular, since the contents of the messages N ₁ and N ₂ are stored by the scheduler 2, the contents of the messages N ₁ and N ₂ are not lost as long as the scheduler 2 operates, and the appearance is improved. .
[0033]
Further, since the messages N ₁ and N ₂ from the operator are input as memos to the scheduler 2, it is possible to store this information in the scheduler 2 and leave it as a record. In other words, the scheduler 2 records information on repairs and maintenance performed by the worker, so that the worker can perform maintenance while referring to past records, so that work efficiency can be improved.
[0034]
Note that the contents of the messages N ₁ and N ₂ described above in FIG. 11 are merely examples for explaining an example of forming the memo screen N by the scheduler of the present invention, and do not limit the present invention. Needless to say. For example, the memo screen N is not limited to characters entered as text, and may be handwritten memos written using a pointing device such as a mouse. That is, if the memo is a character, there is an advantage that a smaller amount of information is sufficient. However, by allowing the handwritten memo to be written as the messages N ₁ and N ₂ , more free messages N ₁ and N ₂ can be left. Not only can you easily show the work contents that are difficult to express in words.
[0035]
Further, the memo screen N is provided with a function for automatically displaying messages N ₁ and N ₂ after a predetermined time from when the operator has no operation on the scheduler 2, or left for a predetermined time. It is also conceivable to add a function for displaying the memo screen N at the moment when the mouse or cursor key is moved to input the operation of the scheduler 2 later. In this case, when the worker changes, the subsequent worker can first see the memo screen N and can reliably receive the messages N ₁ and N ₂ from the previous worker.
[0036]
As described above, in the automobile exhaust gas measurement system according to the above-described embodiment, the scheduler 2 that controls the setting and scheduling of exhaust gas measurement, and the power on / off control of each device in the system, includes the measurement management device 1 and Separately, these devices 2 and 1 are connected via a LAN 3 so that signals can be exchanged between these 2 and 1 so that a single measurement can be performed as well as a plurality of measurements. It can be executed automatically (unmanned) at an arbitrary time, and past measurement results can be freely referred to.
[0037]
The present invention can be implemented with various modifications. For example, the LAN 3 may be wireless. Further, in the above-described embodiment, apart from the measurement management apparatus 1 originally provided in the automobile exhaust gas measurement system, settings and scheduling of exhaust gas measurement, and power on / off of each device in the system Although the scheduler 2 having a function for controlling the control is provided, instead of this, the measurement management apparatus 1 may be provided with the function. In this case, it is necessary to use a measurement management apparatus 1 having a higher processing speed and a larger memory capacity.
[0038]
【The invention's effect】
As described above, first, in the second aspect of the invention, the conventional automobile exhaust gas measuring system provided with a schedule management function, contact regarding exhaust gas measuring freely writable on the screen, a list of operation schedule of the exhaust gas measurement A function to form a display screen that is displayed at the same time as the table is provided so that not only vehicle exhaust gas measurement in multiple modes can be performed according to the operation schedule, but also when multiple workers share and manage a single system By looking at the screen written by and displayed by the management device that contains the information left behind by the previous worker, the subsequent worker can reliably and easily obtain important communication information regarding the exhaust gas measurement being performed. Further, the efficiency and labor saving of exhaust gas measurement can be promoted.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing an example of the configuration of an automobile exhaust gas measurement system according to the present invention.
FIG. 2 is a diagram schematically showing an example of a configuration of main hardware parts in the measurement system.
FIG. 3 is a diagram for explaining a function of a scheduler used in the measurement system.
FIG. 4 is a diagram for explaining the function of the scheduler;
FIG. 5 is a diagram illustrating an example of a signal flow regarding power-on in the measurement system.
FIG. 6 is a diagram illustrating an example of a signal flow related to a test sequence in the measurement system.
FIG. 7 is a diagram for explaining the test sequence.
FIG. 8 is a diagram for explaining test mode editing by the scheduler;
FIG. 9 is a diagram illustrating an example of a signal flow related to an entire alarm in the measurement system.
FIG. 10 is a diagram showing an example of a scheduler display screen during a test.
FIG. 11 is a diagram showing an example of a scheduler-free memo screen of a scheduler during a test.
[Explanation of symbols]
1 ... automobile exhaust gas measuring management apparatus, 2 ... schedule management apparatus, 5 ... constant volume sampling device, 6 ... chassis dynamometer, 7 ... automotive automatic operation device, 8 ... automobile, G ... exhaust gas, N ... memo screen, N _1, N ₂ ... message, S ... sample gas.

Claims (3)

The vehicle mounted on the chassis dynamo device is driven on the roller of the chassis dynamo device by the automatic driving device according to the driving mode, the exhaust gas discharged at that time is collected, and the collected sample gas is used as a gas measuring device. In an automobile exhaust gas measurement system in which the measurement result is managed by an automobile exhaust gas measurement management device,
It corresponds to the setting management function of the operation schedule of exhaust gas measurement by a plurality of test modes including the scheduling of exhaust gas measurement, the warming up of the chassis dynamo device and the adjustment of the automatic driving device of the vehicle , and the set operation schedule of exhaust gas measurement A schedule management device having a function to control power on / off of each device in the system separately from the automobile exhaust gas measurement management device,
Furthermore, this schedule management device can freely write communication items regarding exhaust gas measurement on the screen, and controls the formation of a display screen that displays the written communication items simultaneously with the list of operation schedules. Has function,
Automobile exhaust gas measuring system, characterized in that so as to perform the transfer of signals between the schedule management device and the automobile exhaust gas measuring management device. The vehicle mounted on the chassis dynamo device is driven on the roller by the automatic vehicle driving device according to the driving mode, the exhaust gas discharged at that time is collected, the sampled gas is measured with the gas measuring device, In the automobile exhaust gas measurement system that manages the measurement results in the automobile exhaust gas measurement management device,
It corresponds to the setting management function of the operation schedule of exhaust gas measurement by a plurality of test modes including the scheduling of exhaust gas measurement, the warming up of the chassis dynamo device and the adjustment of the automatic driving device of the vehicle , and the set operation schedule of exhaust gas measurement A function for controlling on / off control of the power of each device in the system, and communication items regarding exhaust gas measurement can be freely written on the screen, and the written communication items are listed in the operation schedule. A vehicle exhaust gas measurement system characterized in that the vehicle exhaust gas measurement management device has a function for controlling the formation of a display screen to be displayed simultaneously . The automobile exhaust gas measurement system according to claim 1, wherein the system has a function of storing the contents recorded on the display screen and leaving them as a record.

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