JPH0583683B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present application relates to a snowplow operation storage device that is attached to a snowplow or the like and collects information such as the time of snow removal work actually performed.

[Prior Art] Conventionally, this type of device is as follows.

Traditionally, in order to collect information indicating the status of snow removal work by snowplows, records from tachographs attached to snowplows and other vehicles were compared with daily vehicle driving reports prepared by snowplow operators to confirm actual snow removal operations. Checking the time spent (actual working time), etc. was done.

With a tachograph, the distance traveled is recorded on a single sheet of recording paper.
Engine speed and running speed are mechanically recorded,
The actual working time is mainly determined based on the state of the traveling speed, but it is difficult to accurately determine the working state due to the relationship between forwarding, idling, etc.

Furthermore, since the recording paper of a tachograph contains very fine analog records within a narrow recording width, it is difficult to read the records and it is easy to make mistakes, making it difficult to check and confirm the actual working time. Ta.

Therefore, the detection output of a sensor that detects whether snow removal is being performed or not, and the output of a travel sensor that generates a signal related to the travel of the snowplow to which this sensor is attached, are sent at regular intervals, for example, every minute. Intake,
A recording device that determines whether or not the vehicle is running based on the captured data and writes the determination result on a storage medium together with data indicating the working status is disclosed in, for example, Japanese Patent Application Laid-Open No. 61-90289. 1986-
Publication No. 297615, Japanese Patent Publication No. 63-297616, Publication No. 297616, Japanese Patent Publication No. 297615
This method is proposed by Japanese Patent No. 63-297617.

[Problems to be Solved by the Invention] The conventional techniques described above had the following problems.

In the case of conventional snowplow construction recording devices, the operator carries a portable storage medium, attaches it at the beginning of work, and takes it out at the end. Since the storage medium and the recording device are connected by a connector, it is easy to cause contact failure when using a snowplow with strong vibrations, and when transporting a portable storage medium, data may be destroyed by static electricity from clothing, etc. Its reliability is at stake, and since it is carried by the operator, care must be taken when handling it.

In addition, the portable storage medium has a small capacity, and it is necessary to replace the portable storage medium during snow removal work, which is performed by the operator. Therefore, data may not be accurate due to operating mistakes made by inexperienced operators. In some cases, the information was not memorized, so it was not possible to conduct sufficient research and analysis.

Furthermore, a plurality of portable storage media are required for each snowplow, which is inconvenient in terms of management.

Therefore, the present invention is capable of collecting snow removal work status data of a snowplow vehicle using a small-capacity storage medium without the need to replace the storage medium during snow removal work, and to allow even inexperienced operators to collect data accurately without making mistakes. The purpose of the present invention is to provide a snowplow construction recording device that enables the following.

[Means for Solving the Problems] In order to achieve the above object, the present invention is as follows.

That is, in the present application, the snowplow construction recording device made according to the present invention in order to solve the above-mentioned problems, as shown in the basic configuration diagram of FIG. , a running determination means B that determines whether the snow plow to which the snow removal work device is attached is running or stopping; a manual input means C that allows the operator to select and input work items; and a state based on the detection output of the state detection means A. When the state storage means D for storing data and the state time series data and cumulative data stored in the state storage means D are compared with a predetermined pattern and the data compression processing means F described below is executed, the difference is detected. data correction processing means E that corrects the data to an appropriate value, and data compression processing means F that compresses the data corrected by the data correction processing means E according to predetermined conditions.
, a compressed data storage means G for storing data compressed by the data compression processing means F, and a memory for transmitting the compressed data stored in the compressed data storage means G to a portable terminal or the like that can be carried freely. It includes a data sending means H and a voice output means (not shown) that outputs operation instructions by voice synthesis.

In other words, the portable storage medium is not operated by the operator, but a fixed storage medium is provided inside the recording device, and the operator is asked to press the appropriate button at the beginning and end of the work, and the snow removal work data is stored inside the recording device. Stored on a fixed storage medium.

In addition, by compressing and storing snow removal work data, it is possible to store several days' worth of data even on a small-capacity storage medium, and since a fixed storage medium is used, it is also possible to use a large-capacity storage medium. becomes.

Furthermore, by displaying and audibly outputting operating instructions to the operator, even an inexperienced operator can operate the system without making mistakes.

After storing the snow removal work data for each snowplow, the manager uses a portable terminal such as a handy terminal with a large capacity to transfer the snow removal work data stored in each snowplow using non-contact optical communication. By recording the snowplows, the reliability of the data is improved, and it becomes possible to manage the work data of a plurality of snowplow vehicles with one portable terminal.

[Effect] The invention works as follows.

Next, the overall operation of the snowplow construction recorder of the present invention will be explained using the flowcharts shown in FIGS. 4A and 4B.

The CPU 11 starts operating in the power control section 2.
3 is in operation, it is checked in step S1 whether the optical signal is being received, and if it is in operation, the process branches to step S2 and the power control unit 23 is powered on.
-Outputs ON signal to continue power supply. Next, in step S3, the light emitting section 20 is operated to send out a response signal.

After sending the response signal, it is checked in step S4 whether there is a data sending request, and if there is no data sending request, the process branches to step S25 and outputs a POW-OFF signal to the power supply control section, turning off the power supply and ending the process.

If there is a data transmission request in step S4, then in step S5, the light emitting section 20 is operated to transmit the 10-minute time series data in a predetermined format to the outside.

After sending out all the data, it is checked in step S6 whether there is a data clear request, and if there is no request, the process branches to step S25 and ends after the power supply is turned off.

If there is a data clear request, all data areas are cleared in step S7, and the process ends after the power supply is turned off in the same manner as described above.

If no optical signal is received in step S1, the process branches to step S8, and in step S8 it is checked whether the ACC switch has been turned on.

If the ACC switch is OFF, the process branches to step S25 and the power supply is turned OFF.

If the ACC switch is ON in step S8, a POW-ON signal is output to the power supply control section 23 in step S9 to continue supplying power.

Next, in step S10, the remaining memory capacity of the 1-minute time series data area is checked, and if it is determined that the remaining capacity is less than a predetermined capacity (for example, one day's worth), the process branches to step S13 and the display is displayed. A message is displayed on the screen to notify the operator to send the stored data using a portable terminal, etc.

Thereafter, the process returns to step S8 and this loop is repeated until the ACC switch is turned off.

If it is determined in step S10 that there is sufficient memory, a message is output on the display and synthesized voice in order to initialize the work classification, work route number, etc. in step S11, and key input is performed. Prompt.

Next, in step S12, it is checked whether all the registrations are completed, and the steps are continued until the registration is completed.
The loop from S8 to step S12 is repeatedly executed.

When all the registrations are completed in step S12, the process advances to step S14, and the registered data is written in a predetermined location in the time series data area.

When the key input processing at step S14 is completed, one-minute time series data creation and recording processing at step S15 is performed, which will be described later with reference to FIG. 4B.

Next, in step S16, it is checked whether the remaining memory capacity of the 1-minute time series data area has reached the warning value, and if it has reached the warning value, the process branches to step S17, and the remaining memory capacity warning is sounded. This is done with sound and display, and the process proceeds to step S18.If the remaining memory capacity has not reached the warning value, it is checked in step S18 whether or not the work end key has been pressed.

If the end key is not pressed, it checks for other key inputs, and if there are any key inputs, the step continues.
Returning to S14, key input processing is performed, and the loop from step S15 to step S19 is executed again. If there is no key input at step S19, the process returns to step S15 and the same loop is executed.

When the end key is pressed in step S18, that is, when the remaining memory capacity warning occurs or when the work is completed and the end key is pressed, the process moves to step S20, which is a process for correcting 1-minute time series data.

In the correction process, all of the one-minute time series data is compared with a predetermined time series pattern, and the correction process is performed only on data that differs from the actual working state, that is, data that requires correction.

Next, in step S21, 1 minute time series data is
It is extracted in units of 10 minutes, compressed into 10 minute time series data, and stored in the RAM 18 in step S22.
Write to the 10-minute time series data area.

After creating the 10-minute time-series data, the 1-minute time-series data will no longer be needed, so after clearing all the 1-minute time-series data area in step S23, proceed to step S8.
Return to This allows the 1 minute time series data area to be reused.

The 1-minute time series data creation and recording process will be explained using the flow shown in FIG. 4B.

First, in step S30, the contents of the time counter by the software timer are read out, and
Check whether or not seconds have elapsed. If one second has not elapsed, return to the main routine; if one second has elapsed, proceed to step 31 and read the running pulse count.

The running pulse count is such that the CPU 11 is interrupted every time a running pulse is generated, and the number of interrupts is counted up.

The read driving pulse count is
It is written as a travel cumulative value in S32, and then compared with the previous count value (one second ago) in step S33, and if there is a difference greater than the set value, it is determined that "travel is present".
It is determined that the process branches to step S34, the running time is added, and the process proceeds to step S35.
If the difference from the previous count value is less than the set value, it is determined that there is no running and the process proceeds to step S35.

In step S35, each work state sensor is read and ON/OFF is checked in step S36.For ON work, the process branches to step S37, where the work state time counter is incremented, and the process proceeds to step S38. For the work that is OFF in S36, the process proceeds to step S38 without performing addition processing.

Step S38 reads the state of the ACC switch, checks ON/OFF in step S39, and turns it ON.
In this case, ACC ON time addition processing is performed in step S40, and the process proceeds to step S41.

When the ACC switch is OFF in step S39,
Proceed to step S41.

In step S41, the content of the time counter by the software timer is read and it is checked whether one minute has elapsed. If one minute has not elapsed, the process returns to the main routine, and if one minute has elapsed, the process proceeds to step S42 and starts running. If the reference time set for the time, each work state time, and the ACC-ON time has been reached, the bit corresponding to that sensor is set to 1, and if not, the bit is set to 0 to set the time to 1 minute. The series data is created, and the process advances to step S43, where it is written into the 1-minute time series data area of the RAM 18.

In steps S44 to S46, the next running time,
After clearing each counter to measure the working state time and ACC-ON time, the process returns to the main routine.

[Embodiments of the invention] Examples will be described with reference to the drawings.

Electrical Configuration FIG. 2 is a block diagram showing an example of the electrical configuration of the snowplow construction recorder of the present invention.
is a CPU (microcomputer).

CPU11 is ROM (read-only memory)12
It operates according to the program stored in the computer, and performs display, keyboard input, data input, data output,
Perform other processing.

First, a display section 13 and a keyboard 14 are connected to the CPU 11.

The display section 13 is composed of a display element such as an LCD (liquid crystal display), and displays the time, operation messages, remaining memory capacity of stored data, and the like.

The keyboard 14 is composed of a numeric keypad and various selection keys, and is used as a means for inputting data such as vehicle codes and work classifications.

A voice synthesis section 15 is also connected to the CPU 11, and the voice output section 16 is further connected to the voice synthesis section 15.
is connected.

Based on instructions from the CPU 11, the speech synthesis unit 15
The above-mentioned keyboard operation instructions and the like are generated by synthesized sounds and notified to the operator via the voice output section 16.

The clock device 17 generates real time data and constantly
It is supplied to CPU11. RAM18 is CPU11
It is a storage unit for 1-minute time series data, 10-minute time series data, etc., which will be described later, and is stored internally so that the memory will not be lost even if the power supply from the on-board battery 28 is cut off. It is backed up by batteries etc.

E ² PROM (read-only memory that can be electrically erased and rewritten) 19 is a non-volatile memory for storing settings such as the vehicle code, which is data unique to the snowplow, the combination of status sensors to be used, etc. .

The light emitting section 20 and the light receiving section 21 are respectively connected to the serial input/output section of the CPU 11, and are used to convert data from electricity to light and from light to electricity.
It consists of LEDs, photodiodes, etc., and serves as a means for inputting and outputting data with portable terminals and the like.

The light receiving section 21 is also connected to the signal detecting section 22, and when it receives a specific code (light signal),
It also serves as a means for the signal detection section 22 to respond and operate the power supply control section 23 to supply power to the entire apparatus.

That is, it is a means for operating the present apparatus by an optical signal from a portable terminal or the like even when the ACC switch 27, which will be described later, is in the OFF state.

An interface section 24 is further connected to the CPU 11, and a traveling sensor section 25, a state sensor section _26l to _26o , and an ACC are connected to the CPU 11.
This is a means for causing the CPU 11 to read the state of the switch 27.

The travel sensor section 25 generates a pulse every time the vehicle travels a predetermined distance, and by counting the number of pulses within a certain period of time with the CPU 11, the average speed of the vehicle within that period of time can be detected. This is a means of detecting the distance traveled by accumulating the numbers.

The status sensor units _26l to _26o are comprised of proximity switches and the like provided corresponding to snow removal devices used for snow removal work, and are means for detecting whether or not each snow removal device is in use.

The ACC switch 27 is linked to the engine key of the vehicle, and is always turned on when the vehicle is preparing to drive (in an idling state) or is running.

The ACC switch 27 is also connected to the power supply control section 23, and when the ACC switch 27 is turned on, the power supply control section 23 is operated to supply power to the entire apparatus.

The power supply control unit 23 connected to the CPU 11 is operated by the signal from the signal detection unit 22 or the ACC switch 27, and is a means for supplying power to the CPU 11 and other devices. Under the control of

In addition, the power control unit 23 always supplies power to the signal detection unit 22, the clock device 17, and the RAM 18 even when it is not in operation, and detects optical signals and controls the clock device 17.
continues operation and stores data in the RAM 18.

About data recording formats Figure 3 shows a format sequence in which 1-minute time-series data and 10-minute time-series data are recorded.

In FIG. 3, bits b0 to b7 are flags corresponding to the travel sensor, state sensors 1 to 6, and ACC switch, respectively, and 0 or 1 is recorded therein.

To determine 0 or 1, check the status of each sensor by CPU1
1 is read every second and is determined by the total ON time of each sensor after a minute has elapsed.

1-minute time series data is written as 1 byte of data every minute, but in order to save 1 day's worth of data, the RAM 18 must be 1 (day) x 24 (hour) x
60 (minutes) = 1440 bytes are required.

The amount of memory of 1440 bytes is not that large today, but if it is for example 30 days,
30 (days) x 24 (hours) x 60 (minutes) = 43,200 bytes are required, which increases the complexity of the device and increases costs.

In the present invention, data is compressed into 10-minute time-series data shown in FIG. 3, but the 1-minute time-series data is corrected in order to bring the compressed data closer to reality.

Data correction is performed by setting the flags of bits b0 to b7 in a predetermined pattern so that there is no discrepancy with the actual working status by comparing the previous and succeeding 1-minute time-series data for each 1-minute time-series data. Rewrite from 0 to 1 or from 1 to 0.

For example, to give an example of a correction pattern, if there is a stoppage due to a traffic light etc. during actual work, it is more natural to consider a short time stoppage that is recorded as idling in the 1-minute time series data as actual work. Therefore, the bit corresponding to the running sensor is rewritten from 0 to 1, and the bit corresponding to the ON state sensor of the immediately preceding one-minute time series data is rewritten from 0 to 1.

That is, correction is performed so that the immediately preceding one-minute time series data is continued.

Data compression is performed by extracting 10 1-minute time-series data in chronological order after completing the correction for the corresponding 1-minute time-series data, and selecting representative 1-minute time-series data according to predetermined criteria. Ten
Write as minute time series data.

For example, the 1-minute time-series data that exists the most among the 10 1-minute time-series data is assumed to be the 10-minute time-series data.

By performing the data compression described above, to save 30 days of 10-minute time series data, 30 (days) x 24
(Time) x 6 (10 minutes) = 4320 bytes, which means that 30 days' worth of data only requires a storage capacity of about 4320 bytes. Furthermore, after data compression, 1-minute time-series data can be cleared, making it possible to use memory capacity effectively.

[Effects of the Invention] Since the present invention is configured as described above, it produces the following effects.

The present invention provides a small-capacity fixed storage system that stores a large amount of snow removal work data within the main body by configuring snow removal work status data of a snowplow vehicle with a data correction processing means, a data compression processing means, and a compressed data storage means. It can be stored in a medium, and operators do not need to replace the storage medium during snow removal work, do not need to be careful when handling portable storage media, and can work without being aware of the storage medium. The operability has improved significantly.

Furthermore, since the system is configured to output operation instructions for the device using the audio output means, even an inexperienced operator can collect data accurately without making any operational mistakes.

As described above, according to the present invention, by performing correction processing and compression processing on snowplow work data, it is possible to record data with less storage capacity than before without impairing realism, which is extremely advantageous in terms of cost. Furthermore, reliability and operability have been significantly improved by using optical communication when transmitting stored data to portable terminals and the like.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the basic configuration of a snowplow construction recording device according to the present invention, Fig. 2 is a block diagram showing an embodiment of the present invention, Fig. 3 is a diagram showing an example of a data recording format, and Fig. 4A. and FIG. 4B are flowcharts showing the tasks performed by the CPU in FIG. 2. A...State detection means, B...Driving determination means, C
...Manual input means, D...State storage means, E...Data correction processing means, F...Data compression processing means,
G...Compressed data storage means, H...Stored data sending means.

Claims (1)

[Claims] 1. A state detection means for detecting the state of a snow removal device attached to a snow removal vehicle using a snow removal sensor;
a running determination means for determining whether the snow removal vehicle to which the snow removal work device is attached is stopped; a state storage means for storing state data based on a detection output of the state detection means; and a state stored in the state storage means. data correction processing means for correcting time series data and cumulative data according to a predetermined pattern; and data compression processing means for performing compression processing on the data corrected by the data correction processing means according to predetermined conditions; a compressed data storage means for storing data compressed by the data compression processing means; a stored data sending means for sending the data stored by the compressed data storage means to a portable terminal or the like through optical communication; 1. A snowplow construction storage device comprising: audio output means for outputting operational instructions in voice; and manual input means for an operator to select a work item.