JP4465220B2 - Diagnostic method and apparatus for garbage truck - Google Patents

Description

  The present invention relates to a method for diagnosing a breakdown of a garbage truck by comparing it with information in a normal operation state of an electronic maintenance manual, and a diagnostic apparatus therefor.

As a device that compares and diagnoses with normal operation information in an electronic maintenance manual, it is connected to an electronic control device mounted on the vehicle, and data in this electronic control device can be read to perform fault diagnosis The device is conventional (Patent Document 1).
As shown in FIG. 6, the failure diagnosis apparatus 100 disclosed in Patent Document 1 has a diagnosis program that is different for each diagnosis item for the electronic control device or for each vehicle type. For example, fuel injection pulse time data of the electronic control device 101 is diagnosed by installing the stored ROM via the ROM cartridge 100a. When diagnosing the fuel injection pulse time data of the electronic control device 101, as shown in FIG. 6, the fuel injection pulse is sent from the failure diagnosis device 100 connected to the electronic control device 101 via the adapter harness 102 to the electronic control device 101. When the time data is requested, the data is transmitted from the electronic control device 101 to the failure diagnosis device 100 and displayed on the display 100b. Next, the computerized data (electronic) of the maintenance manual corresponding to the fuel injection pulse time data stored in the host computer 103 is connected to the host computer 103 connected via the wireless communication from the failure diagnosis apparatus 100. Requested normal operation information) is transmitted from the host computer 103 to the failure diagnosis apparatus 100 and displayed on the display 100b. As a result, the maintenance staff can make a diagnosis by comparing the fuel injection pulse time data from the electronic control unit 101 displayed on the display 100b with the digitized data of the maintenance manual from the host computer 103. .

However, the failure diagnosis device is used when individually diagnosing data of a specific diagnosis item such as fuel injection pulse time data of the electronic control device, such as loading operation of a garbage truck. The continuous operation is decomposed into an appropriate number of phases, and an input signal supplied to the controller at an appropriate time for each decomposed phase or at an appropriate elapsed time of the continuous operation, and sent from the controller. It is not suitable for diagnosing the output signal.
In addition, since the failure diagnosis device must access a host computer separate from the failure diagnosis device each time to obtain the digitized data of the maintenance manual, the failure diagnosis device continues such as loading operation of a garbage truck. It is complicated and unsuitable as a device for diagnosing the input / output signal during operation.
Japanese Patent No. 3219935 (pages 3 to 5, FIG. 1)

  The problem to be solved is that an appropriate time for each phase when a series of continuous operations such as a loading operation of a garbage truck is decomposed into an appropriate number of phases, or an appropriate elapsed time of the series of operations. Each time, it is possible to diagnose an input signal supplied to the controller and an output signal sent from the controller.

Fault diagnosis method of refuse collection vehicle according to claim 1 of the present invention, the controller control program for controlling the operation of waste trucks is stored, the backward and forward of the conveyor panel in the waste trucks by execution of the control program An input signal supplied to the controller from a predetermined switch that is turned ON / OFF in accordance with a swing operation or a rotation operation of the ram panel, and an output sent from the controller for the swing operation of the conveyor panel and the rotation operation of the ram panel A memory for storing signals at appropriate times for each phase when a series of operations associated with execution of the control program is decomposed into an appropriate number of phases, or at appropriate elapsed times during execution of the control program An area is provided, and the input signal and output signal information is read out from the memory area and processed in advance. It is a method of comparing and judging with the information in the normal operation state corresponding to these pieces of information, and according to such a method, a continuous series of operations such as a loading operation of a garbage truck is appropriately divided into a number of phases. The input signal supplied to the controller and the output signal sent from the controller can be diagnosed at an appropriate time for each phase when disassembling, or at an appropriate elapsed time, so that a failure can be detected and repaired. Treatment can be done quickly.
By the way, the information stored in the memory area is calculated using the latest input signal and the previously stored input signal, for example, when outputting the current output signal in addition to the input signal and output signal. The result information of the calculation process in the middle of being performed may be included.

According to a second aspect of the present invention, there is provided an apparatus for diagnosing a waste collection vehicle through a communication cable and a controller storing a control program for controlling the forward / backward swing motion of the conveyor panel and the rotational operation of the ram panel. A failure diagnosis apparatus for a garbage truck connected to the controller, wherein an input is supplied to the controller from a predetermined switch that is turned ON / OFF in accordance with a swing operation of the conveyor panel or a rotation operation of the ram panel by execution of the control program. When the signal and the output signal sent from the controller for the swing operation of the conveyor panel and the rotation operation of the ram panel are decomposed into a suitable number of phases, a series of operations accompanying the execution of the control program Stored at an appropriate time for each phase or at an appropriate elapsed time during execution of the control program The input signal and the output signal are read from the controller, the information of the input signal and the output signal is processed, and compared with the information stored in the normal operation state corresponding to the information stored in advance. According to such a device, at a suitable time for each phase when a series of continuous operations such as a loading operation of a garbage truck is broken down into a suitable number of phases, or at an appropriate elapsed time Since the input signal supplied to the controller and the output signal sent from the controller can be diagnosed, the failure can be detected and the action for the failure can be performed quickly.
By the way, as described above, the information stored in the controller uses, in addition to the above input signal and output signal, for example, when outputting the current output signal, the latest input signal and the previous input signal already stored. The result information of the calculation process in the middle of the calculation may be included.
The failure diagnosis apparatus here can be a general personal computer, PDA, programmable display, or the like, without being a special dedicated apparatus.

  The garbage truck failure diagnosis method and apparatus according to the present invention can be applied to an appropriate time for each phase when a continuous series of operations such as a loading operation of a garbage truck is disassembled into an appropriate number of phases, or at an appropriate time. An input signal supplied to the controller at every elapsed time and an output signal sent from the controller can be diagnosed without complication, and there is an advantage that a failure location can be found and repairs can be speeded up.

An embodiment of the present invention will be described with reference to FIGS. 1 to 5 using a rotary plate type loading device.
As shown in FIG. 1A, the failure diagnosis apparatus 1 is connected via a controller 3 and a communication cable 4 in which a garbage truck control program for controlling operations of a conveyor panel and a ram panel, which will be described later, of the garbage truck 2 is stored. In this embodiment, a general personal computer is connected. However, this failure diagnosis device 1 is used by being connected to the controller 3 when performing a failure diagnosis of the garbage truck 2, and needless to say, it is not normally connected.
Before describing the failure diagnosis method by the failure diagnosis apparatus 1, the configuration of the controller 3 and the loading operation of the garbage truck 2 as an example to be subjected to the failure diagnosis will be described.
First, as shown in FIG. 1B, the controller 3 generally includes a CPU (Central Processing Unit) 3a, a ROM 3b in which a garbage truck control program is stored, an input signal and an output signal described in detail later. In the present embodiment, the RAM 3c having a memory area stored at an appropriate time for each phase when the series of operations of the loading operation is decomposed into four phases, and the input signal and output signal I / O port 3d, which is connected via a data path 3e.

Next, the loading operation of the garbage truck 2 will be described with reference to FIG. This loading operation is taken as an example of the target of this fault diagnosis. Here, for convenience of explanation, the series of the loading operation is broken down into four phases as shown in FIG. However, it is simplified by limiting the number of switches that operate in accordance with the loading operation.
At the start of the loading cycle, as shown in FIG. 2A, the conveyor panel 5 is stopped at the rotation start position A, which is detected by the forward rotation completion switch 10, and the pushing operation by the ram panel 6 is completed. Is detected by the push-in completion switch 11, and the conveyor panel 5 starts to rotate forward by a hydraulic motor (not shown) based on the detected information, and the conveyor panel 5 starts to raise the dust (first phase). When the conveyor panel 5 rotates forward and reaches the position shown in FIG. 2B (second phase), the reverse signal switch 12 is activated, and a hydraulic cylinder (not shown) is operated based on the signal from the switch 12. ) Swings the ram panel 6 backward. When the ram panel 6 moves backward and reaches the position shown in FIG. 3C (third phase), the return completion switch 13 is activated, and the ram panel 6 is held at this position based on the signal from the return completion switch 13. The However, the forward rotation of the conveyor panel 5 described above is continued, whereby the dust is scraped up. When the conveyor panel 5 rotates forward and reaches the position shown in FIG. 4D, that is, the rotation start position A (fourth phase), the forward rotation completion switch 10 detects this, and the forward rotation completion switch Based on the signal from 10, the hydraulic cylinder moves the ram panel 6 forward and swings it to push it into the dust box. Thereby, the loading operation as one cycle is completed.

The loading operation is performed by the execution of the garbage truck control program, and the input signal supplied to the controller 3 from the predetermined switches 10 to 13 which are turned ON / OFF in accordance with the operation of the conveyor panel 5 and the ram panel 6, and the controller 3 An output signal sent for the operation of the conveyor panel 5 and the ram panel 6 is stored in a predetermined memory area of the RAM 3c for each phase as the garbage truck control program is executed.
Specifically, as shown in FIG. 3, the first phase is the input signal and output signal shown in FIG. 2A, and the forward rotation completion switch 10 and the push-in completion switch are the input signals. 11 is stored as an input signal “1” in the ON state, and an input signal “0” in the OFF state of the other switches 12 and 13, and the output signal “1” of the rotation operation of the conveyor panel 5 is stored as the output signal. ”And the output signal“ 0 ”in a stopped state of the ram panel 6 are stored. In the second phase, the input signal and the output signal are as shown in FIG. 2B. For the input signal, the input signal “1” in the ON state of the backward cue switch 12 is the other signal. The input signal “0” of the OFF state of the switches 10, 11, 13 is stored, and the output signal thereof is the output signal “1” of the rotation operation of the conveyor panel 5 and the output signal of the (reverse) swing operation of the ram panel 6. “1” is stored. In the third phase, the input signal and the output signal are as shown in FIG. 2C. For the input signal, the input signal “1” in the ON state of the return completion switch 13 is used. The input signal “0” of the OFF state of the switches 10 to 12 is stored, and the output signal “1” of the rotation operation of the conveyor panel 5 and the output signal “0” of the stop state of the ram panel 6 are stored. The Further, in the fourth phase, the input signal and the output signal shown in FIG. 2D are the input signal “1” in the ON state of the forward rotation completion switch 10, and the others. The switch 11 to 13 in the OFF state of the input signal “0” is stored, and the output signal “0” in the stop state of the conveyor panel 5 and the output signal “(forward) swing operation of the ram panel 6” 1 "is stored.

  In this loading operation, one cycle is completed in the first phase to the fourth phase. In this embodiment, the input signal and the output signal described above in the first phase to the fourth phase of the next cycle are used. Is overwritten in the memory area where the input signal and output signal of the first to fourth phases of the previous cycle are stored, but a new memory area is allocated in the RAM 3c. You may make it store.

Next, a failure diagnosis method using the failure diagnosis apparatus 1 will be described with reference to FIGS. Here, in the first phase of the loading operation process, the output signal “0” of the rotation state of the conveyor panel 5 must be stored, the output signal “0” in the OFF state is stored, and the forward rotation completion switch 10 It is assumed that the input signal “0” in the OFF state is stored where the input signal “1” in the ON state must be stored.
If a failure or malfunction occurs during the loading operation, it is necessary to stop the loading operation, find the cause, and repair it. In order to find the cause of such a failure, as shown in FIG. 1A, the failure diagnosis apparatus 1 is connected to the controller 3 with a communication cable 4 and an appropriate operation is performed on the display of the failure diagnosis apparatus 1. The display as shown in FIG. That is, in the loading operation process, when the failure occurs in the conveyor panel 5 and the loading operation is stopped, the input signals and output signals in the first phase to the fourth phase are displayed in the RAM 3c as shown in FIG. It is stored in the state of A) (however, the storage state is shown in a two-dimensional display diagram). However, paying attention to the conveyor panel 5 and the forward rotation completion switch 10 in the first phase in FIG. 4A, the output signal “0” in the OFF state is stored at the conveyor panel 5, and the forward rotation completion switch. An input signal “0” in an OFF state is stored at 10.

  Therefore, the failure diagnosis apparatus 1 reads out all the input signals and output signals in FIG. 4A stored in the RAM 3c of the controller 3, and uses the failure diagnosis program to store the information of these input signals and output signals. The information is compared with the information in the normal operation state corresponding to these pieces of information stored in advance in the diagnostic device 1. FIG. 4B is a display screen showing the comparison determination result in the first phase. As can be seen from this screen display, when viewing the “X5 output state” in the input / output number column, the state column is Although it is “OFF”, the column of the normal operation state is “ON”, and when the “X10 input state” in the I / O number column is seen, the state column is “OFF”. However, the column of the normal operation state is “ON”, and it can be determined at a glance that a failure has occurred in the conveyor panel 5 and the forward rotation completion switch 10. In addition, since the message “It is judged that the conveyor panel does not rotate is due to an abnormality in the forward rotation completion switch” is displayed, the cause of the failure can be easily identified and repairs can be speeded up. Here, “X5” in the I / O number column is the conveyor panel 5, “X6” is the ram panel 6, “X10” is the forward rotation completion switch, “X11” is the push completion switch, and “X12” is the backward movement. “C13” represents a signal switch, and “X13” represents a return completion switch. Needless to say, for example, when “go to the next screen” is clicked, the screen is switched to the display screen showing the comparison determination result in the second phase.

  A screen display as shown in FIG. 5 is displayed on the display of the failure diagnosis apparatus actually used. Looking at the display screen, in the “X39 input state” in the input / output number column, the state column is “OFF”, but the normal operation state column is “ON”. In the “Y35 output state”, the state column is “OFF”, but the normal operation state column is “ON”, so that the failure location can be seen at a glance. In addition, the cause of the failure can be easily identified by the message displayed below.

In the above-described embodiment, the failure diagnosis apparatus 1 is connected to the controller 3 by the communication cable 4. However, the connection with the controller 3 is replaced by the wireless communication instead of the communication cable 4. Normal operation corresponding to the information stored in advance using the failure diagnosis program at the service center, for example, received at the service center, the information of the input signal and the output signal read out from the RAM 3c and transmitted wirelessly You may make it compare with the information at the time of a state.
Thus, when performing a failure diagnosis at the service center, the user (occupant of the garbage truck 2) may operate the controller 3 to transmit the input signal and the output signal when the failure occurs. Alternatively, the user may notify the service center of the failure by telephone or the like, and issue a command from the service center to the controller 3 so that the input signal and the output signal are transmitted to the service center.

  The failure diagnosis method as in the present invention can be widely applied not only to the operation of loading garbage trucks, but also to, for example, vehicle control devices and factory machine tools. It can be said that it contributes to.

1 is a system configuration diagram in the case where failure diagnosis is performed by a failure diagnosis apparatus according to an embodiment of the present invention. It is an operation | movement figure for every phase of the loading operation | movement of a garbage truck. It is a two-dimensional display figure of the signal stored in RAM of the controller of FIG. FIG. 2 is a two-dimensional display diagram of signals including failure information stored in the RAM of the controller of FIG. 1 and a screen display diagram displayed on the failure diagnosis device at this time. It is an illustration figure of the screen display displayed on a failure diagnosis apparatus when failure information exists. It is a schematic block diagram of the conventional failure diagnosis system.

Explanation of symbols

1 Failure diagnosis device 2 Dust collector 3 Controller 3c RAM
5 Conveyor panel 6 Ram panel 10 Forward rotation completion switch 11 Push-in completion switch 12 Backward signal switch 13 Return completion switch

Claims (2)

A controller in which a control program for controlling the operation of the garbage truck is stored, a predetermined switch that is turned ON / OFF in accordance with the swing operation of the forward and backward movement of the conveyor panel and the rotation operation of the ram panel by the execution of the control program An input signal supplied from the controller to the controller and an output signal sent from the controller for the swinging operation of the conveyor panel and the rotating operation of the ram panel are appropriately set in a series of operations accompanying the execution of the control program. A memory area is provided to store at an appropriate time for each phase when disassembled into phases, or at an appropriate elapsed time during execution of the control program, and information on the input signal and output signal is stored from the memory area. Read-out processing from the outside and stored in advance, in the normal operation state corresponding to these information Garbage car fault diagnosis method characterized by comparing determines that distribution. A fault diagnosis device for a garbage truck connected via a communication cable to a controller storing a control program for controlling the forward / backward swinging movement of the conveyor panel and the rotation operation of the ram panel in the garbage truck, the control program execution by an input signal supplied to the controller from a predetermined switch oN · OFF in accordance with the rotation operation of the rocking motion and the Ramupaneru of the conveyor panel, and from the controller of the Ramupaneru the swinging motion of the conveyor panel The output signal sent for the rotation operation is an appropriate time for each phase when a series of operations accompanying the execution of the control program is decomposed into an appropriate number of phases, or during the execution of the control program. The input signal and output from the controller stored for each appropriate elapsed time A garbage truck fault diagnosis device characterized in that the information of the input signal and the output signal is read out, and the information of the input signal and the output signal is processed and compared with the information stored in the normal operation state corresponding to the information in advance. .

Images