JP2518546Y2 - Tachograph for work management - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work management tachograph mounted on a vehicle, and more particularly to a work management tachograph capable of recording operating hours of crew members of various vehicles on a chart paper for each work. It is a thing.

[0002]

2. Description of the Related Art In general, in a tachograph, chart paper is rotated with the progress of time, and a speed recording hand is set at an amplitude corresponding to the speed, and a traveling distance recording hand is kept constant at right angles to the rotation direction of the chart paper. It reciprocates at a speed corresponding to the speed in the range of the amplitude, and scrapes off the paint on the chart paper surface at each needle point to record the speed and the traveling distance.

In addition to the above-described speed and mileage, some tachographs can record the operating time of the crew of the vehicle on a chart paper for each work.

In this type of tachograph, as shown in FIG. 25, between the outermost speed record 2a and the innermost mileage record 2b on the chart paper 2, the work classification record 2 of the crew member is recorded.
c and 2d are performed. The work division records 2c and 2d are drawn by allocating the recording widths of the thick line, the middle line, and the thin line, respectively, corresponding to the work division. The thick line and the medium line are drawn by reciprocating the recording needle with large and medium amplitudes of a relatively short fixed period, and the thin line is performed by not moving the recording needle.

As described above, as a work management tachograph, conventionally, a push button is provided corresponding to each work section, and a work section is recorded by operating the push button to input the work section. There is something I did. In this tachograph, for example, the unloading push button is turned on to start the unloading record at the unloading place at the point A, the reset push button is turned on when the unloading work is finished to end the unloading record, and then the loading at the point B is loaded. Move to the place and turn on the loading push button to record the loading. Then, when the work is completed, turn on the reset push button again to release the loading record.

[0006]

However, when considering a series of recording operations for such work divisions, it is necessary to input a signal for canceling the work divisions each time the work divisions are completed, and the operation is frequently performed. There is a problem that it becomes annoying. In addition, in the above example, if the user forgets to release the work category for unloading, there is a problem that the record will be unloading even for loading work.

Therefore, in view of the above-mentioned conventional problems, the first object of the present invention is to provide a work management tachograph which simplifies the operation without performing the operation of releasing the work section. .

In view of the above-mentioned conventional problems, the present invention also provides a work management tachograph capable of preventing the user from forgetting to cancel the work classification and recording the wrong work classification. It is an issue.

[0009]

A work management tachograph made according to the present invention to solve the above first problem is as follows.
As shown in the basic configuration diagram of FIG. 1, work classification input means 13a for inputting the classification of work to be performed when the vehicle is stopped.
To 13e and a recording needle drive means 11a for driving the recording needles 113U and 113D so as to record the work divisions input by the work division inputting means 13a to 13e on the chart paper 2, A travel sensor 12 for generating a travel signal according to the travel of the vehicle,
The travel detection means 132a for detecting the travel of the vehicle based on the travel signal generated by the travel sensor 12 and the recording needle drive means 11a record the work categories input by the work category input means 13a to 13e. At this time, in response to the detection of the traveling of the vehicle by the traveling detection means 132a, the work classification input means 13a to the recording needle drive means 11a.
First control means for causing the recording needle drive means 11a to perform stop recording in response to the vehicle stop detection by the travel detection means 132a thereafter, instead of recording the work classification input by 13e. And 132b.

In order to solve the above-mentioned second problem, the work management tachograph made by the present invention inputs the classification of work to be performed when the vehicle is stopped, as shown in the basic configuration diagram of FIG. Work including work classification input means 13a to 13e and recording needle driving means 13a to 13e for driving the recording needles 113U and 113D so as to record the work classification input by the work classification input means on the chart paper 2. In the management tachograph, a traveling sensor 12 that generates a traveling signal according to traveling of the vehicle, a traveling detection unit 132a that detects traveling of the vehicle based on the traveling signal generated by the traveling sensor 12, and the recording needle driving unit 11a. Is recording the work divisions input by the work division inputting means 13a to 13e, the traveling detection of the vehicle by the traveling detecting means 132a is performed. Depending the recording needle driving means 11a the working classification input means 13a~13e in place of the recording of the input operation block to perform the travel recorded by the response to stop detection of the vehicle by subsequent said running detecting means 132a,
Second control means 132c for causing the recording needle drive means 11a to record the original work section, and the second control means 13
2c is provided with an alarm sound generating means BZ for generating an alarm sound until the work classification inputted by the work classification inputting means 13a to 13e is canceled while the recording needle driving means 11a is performing traveling recording. It has a feature.

The work management tachograph made according to the present invention to solve the above-mentioned problem is, as shown in the basic configuration diagram of FIG. 1, a work classification input for inputting the classification of the work to be performed when the vehicle is stopped. The recording needles 113U and 11 are used to record the work categories input by the means 13a to 13e and the work category inputting means 13a to 13e on the chart paper 2.
In a work management tachograph including recording needle driving means 11a for driving 3D, a travel sensor 12 that generates a travel signal according to the travel of the vehicle, and the travel of the vehicle is detected based on the travel signal generated by the travel sensor 12. When the traveling detection means 132a that performs the operation and the recording needle driving means 11a are recording the work divisions input by the work division input means 13a to 13e, the traveling detection means 132a detects the traveling of the vehicle, and The recording needle driving means 11a is caused to perform traveling recording instead of the recording of the work divisions inputted by the work division inputting means 13a to 13e, and in response to the vehicle stop detection thereafter by the travel detecting means 132a.
The first control means 132b for causing the recording needle driving means 11a to perform stop recording and the recording needle driving means 11a for recording the work classification input by the work classification inputting means 13a to 13e, Running detection means 132
The recording needle drive means 1 according to the traveling detection of the vehicle by a.
1a is made to perform traveling recording instead of recording the work divisions input by the work division inputting means 13a to 13e, and the recording needle driving means 11a is used as a source in response to subsequent detection of the vehicle stop by the traveling detecting means 132a. Second control means 132c for performing the recording of the work classification and the second classification means 132c while the second needle control means 132c is causing the recording needle driving means 11a to perform the travel recording, the work classification input means 13a to 13e.
Is provided with an alarm sound generating means BZ for generating an alarm sound until the work classification input by the above is canceled, and a selecting means SW7 for selectively operating one of the first and second control means 132b and 132c. There is.

[0012]

With the above construction, the recording needle driving means 11a drives the recording needles 113U and 113D so that the recording of the work division input by the work division input means 13a to 13e is performed on the chart paper 2 when the vehicle is stopped. At this time, based on the traveling signal generated by the traveling sensor 12, the traveling detecting means 132a
When the vehicle detects the traveling of the vehicle, the first control means 131b causes the recording needle drive means 11a to input the work classification input means 13a to 13a.
Since the travel record is performed instead of the record of the work category input by e, and the record needle driving means 11a is caused to perform the stop record in accordance with the subsequent detection of the vehicle stop by the travel detection means 132a, the work category input means 13a. It is not necessary to cancel the work category input by 13e each time the work is completed.

When the recording needle driving means 11a is driving the recording needles so as to record the work divisions inputted by the work division inputting means 13a to 13e on the chart paper 2 when the vehicle is stopped, the traveling sensor 12 is operated. When the travel detection means 132a detects the travel of the vehicle based on the travel signal generated by the second operation means 132c, the second control means 132c replaces the work classification input by the work classification input means 13a to 13e in the recording needle driving means 11a. The recording of the original work division is performed by the recording needle driving means 11a in response to the vehicle stop detection by the travel detection means 132a after that. Therefore, the work division input by the work division input means 13a to 13e is recorded. Even if the work is not canceled each time the work is completed, the record is automatically switched to the traveling record, and when the next work classification is the same, the work classification is performed. It is possible to re-record the original operation block by the stop of the vehicle when not cancel operation block inputted by the force means 13 a to 13 e. Further, the alarm sound generating means BZ generates an alarm sound until the second control means 132c causes the recording needle driving means 11a to perform traveling recording, until the work classification input by the work classification input means 13a to 13e is canceled. Therefore, when the next work classification changes, the operation of canceling the work classification input by the work classification input means 13a to 13e according to this alarm sound can be performed without forgetting.

The selecting means S selects one of the operation by the first control means 132b and the operation by the second control means 132c.
Since it can be selected by W7, it is not necessary to release the work classification input by the work classification inputting means 13a to 13e each time the work is completed, or the work classification inputting means 13a to 13e Even if the entered work classification is not canceled each time the work is completed, the record is automatically switched to the travel record, and when the next work classification is the same, the work classification input means 13a to 13e.
According to need, it is possible to select whether or not to perform recording so that the original work division can be recorded again when the vehicle is stopped when the input work division is not canceled.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 2 and 3 are views showing an external configuration and a circuit configuration of a system showing an embodiment of a work management tachograph according to the present invention, respectively. Referring to FIG. 1, the system includes a tachograph main body 11, a traveling sensor 12, a control box 13, and a sensor switch 14, 15 is a transmission, and 16 is a battery.

The tachograph main body 11 has a timepiece mechanism for driving a chart paper to rotate therein with time, a speed recording needle driving mechanism for driving a speed recording hand, and a distance recording needle driving mechanism for driving a traveling distance recording needle. In addition, it has a work section recording needle drive mechanism 11a for driving two work section recording needles. The speed recording needle driving mechanism and the distance recording needle driving mechanism are attached to the transmission 15 and are rotated by the rotational force extracted from the traveling sensor 12 that receives rotation in proportion to the rotation of the wheels via the rotation connecting cable L1. It is a mechanical type that drives each recording needle. The travel sensor 12 receives rotation in proportion to the rotation of the wheels and generates a travel pulse having a cycle corresponding to the vehicle speed.

The control box 13 has a signal line L2.
In addition to the running pulse input from the running sensor 12 through the external device, external signals from the five sensor switches 14a to 14e are input, and these external signals and signals generated by operating the five operation switches 13a to 13e are output. To generate a drive signal for driving the work section recording needle drive mechanism 11a, and supply this to the tachograph body 11 via the signal line L3.

The work section recording needle drive mechanism 11a is, as shown in FIG. 4, a rotary shaft 1 of a rotary drive source 111 which is rotated to a predetermined angular position called a rotary magnet.
11a, the cam 112 is fixed.
In the cam groove 112a formed over the upper recording needle 1
The cam follower pin 113Ub of the needle support lever 113Ua supporting the 13U and the cam follower pin 113Db of the needle support lever 113Da supporting the lower recording needle 113D are fitted 180 ° apart from each other to rotate the cam 112 within a predetermined rotation angle range. Thus, the recording needles can be selectively reciprocated at a large amplitude and a medium amplitude, or not, so that a thick line, a medium line, and a thin line can be drawn.

The rotary drive source 111 is specifically shown in FIG.
As shown in the partially broken view of the
And NS2 in the hollow portion and the second is parallel to the coil 111b ₁ and 111b ₂ one of the coils 111b ₁ formed by the third coil 111b ₃ wound in the opposite direction
The magnet rotor 111c magnetized in the pole is rotatably housed, and the rotating shaft 111 of the magnet rotor 111c is accommodated.
The configuration is such that the cam 112 is fixed to the upper end of a. A small chamber 111d into which silicon grease is injected is provided below the rotation drive source 111, and a disk 111e fixed to the lower end of the rotation shaft 111a is accommodated therein, and friction between the disk 111e and the silicon grease is provided. The force prevents the magnet rotor 111c from rotating unnecessarily.

The operation principle of the rotary drive source 111 will be described below with reference to FIG. 6. First, the second coil 111b will be described.
₂ is energized in one direction.
A magnetic field Φ ₂ is generated in the direction shown in FIG. 3A, and the NS pole of the magnet rotor 111c assumes a position corresponding to the direction of the magnetic field Φ _2.
This position is maintained by the frictional force between e and the silicon grease. Now, this position is set as the origin position.

If the first coil 111b ₁ is energized in one direction when the magnet rotor 111c is at the origin position in FIG. 6 (a), the direction of the magnetic field Φ ₂ is changed by this coil as shown in FIG. 6 (b). A magnetic field Φ ₁ is generated in the orthogonal direction, and the NS pole of the magnet rotor 111c has a magnetic field Φ ₁
, And a position rotated 90 ° clockwise from the origin position, and this position is maintained by the frictional force between the disk 111e and the silicon grease even after the energization is released. Further, when the magnet rotor 111c is energized in one direction to the third coil 111b ₃ when in the home position, the magnetic field [Phi ₃ is generated by the coil in the magnetic field [Phi ₁ and backward as shown in FIG. 6 (c) , magnet rotor 111c thereof NS pole coincides with the direction of the magnetic field [Phi _3, made from the home position to take a rotated position at 90 ° counter-clockwise direction.

Further, when the magnet rotor 111c is at the origin position, the first and second coils 111b ₁ and 1b
When applying current in one direction 11b _2, these by the coil magnetic field [Phi ₁ and [Phi ₂ as shown in FIG. 6 (d) is generated, the magnet rotor 111c magnetic field [Phi ₁ the NS pole
And matching the [Phi ₂ in the synthesized direction of the magnetic field [Phi _21, now take a position rotated from the home position to the 45 ° clockwise, the second and third coil 111b ₂ and 111b ₃
When current flows in one direction, the coils shown in FIG.
A magnetic field Φ ₂ and a magnetic field Φ ₃ are generated as shown in FIG.
The magnet rotor 111c assumes a position rotated in the counterclockwise direction by 45 ° from the origin position, the NS pole of which coincides with the direction of the magnetic field Φ ₂₃ obtained by combining the magnetic fields Φ ₂ and Φ ₃ .

The rotary shaft 111 of the rotary drive source 111 described above.
cam groove 112a of the cam 112 which is fixed and rotated
Are as shown in FIG. 7, and the cam follower pin 11
The first cam groove portion 112a _{1 into} which 3Ub fits and the second cam groove portion 112a ₂ into which the cam follower pin 113Db fits.
It consists of Now, when the magnet rotor 111c is way of illustrating the angular position of the cam 112 when it is in home position, the first cam groove 112a ₁ is 0 ° from 90 °
Through a range of 180 ° to 270 °,
With the cam groove 112a ₂ is formed in a range of 270 ° from 90 °, the cam follower pin 113Ub and 113
Db is fitted into the first cam groove portion 112a ₁ and the second cam groove portion 112a ₂ at angular positions of 0 ° and 180 °, respectively, and the recording needles 113U and 113D are positioned on the 0 ° side as shown in the drawing.

The first cam groove portion 112a ₁ has an angle range L ₁ of 90 ° from 0 ° to 90 ° and an angle range of 45 ° from 315 ° to 0 ° from the rotary shaft 111a.
₂ , the angle range of 45 ° from 270 ° to 315 ° is L
₃ (L ₁ <L ₂ <L ₃ ). Second
The cam groove portion 112a ₂ has a distance of 9 from the rotating shaft 111a.
90 ° angle range from 0 ° to 180 ° is L ₅ , 180 °
The angle range of 45 ° from 225 ° to 225 ° is L ₄ , and the angle range of 45 ° from 225 ° to 270 ° is L ₃ (L ₃ <L ₄ <
L ₅ ). Incidentally, indicating expand first cam groove portion 112a ₁ and a second cam groove 112a ₂ described above is as shown in FIGS. 8 (a) and (b).

With such a cam groove shape, the cam 112
Is rotated 90 ° clockwise and then returned to the original position in the figure, the recording needle 113D is moved to L ₅ and L indicated by the dotted line.
Range corresponding to the difference between the ₃ moves in (large-amplitude) was recorded thick line, also by being returned to the original position of Figure after being rotated 45 °, recording the needle 113D is the difference of L ₅ and L ₄ The middle line is recorded by moving in a half range (medium amplitude) of the range indicated by the corresponding dotted line. On the contrary, the recording needle 1 is rotated 90 ° counterclockwise and returned to the original position in the figure.
13U is by being returned to the original position of FIG After recording the thick line moves within a range (large amplitude) corresponding to a difference between L ₁ and L ₃ shown by the dotted line, also, which is rotated 45 °, recording the needle 113
U records the midline moving at half the range of the range shown by the dotted line corresponding to a difference between L ₁ and L ₂ (medium amplitude).

The control box 13 is configured as shown in FIG. 9, and has a power supply circuit 131 that converts + 24V into stabilized + 5V and supplies the power to each unit, and the power supply circuit 13.
1 and a microcomputer (CPU) 132 operated according to a predetermined control program.
Have. The CPU 132 has the five operation switches 13a to 13e and the eight switches SW1 to SW described above.
8 is directly connected, the travel sensor 12 described above via the interface (I / F) 134, and the five sensor switches 14a to 14e described above via the I / F 135 are connected to the I / F 136. Light emitting diode (LED) for four indicators via
137a to 137d are connected to the buzzer BZ via the I / F 138, and the above-mentioned rotation drive source 111 via the I / F 139, respectively. In addition, 140 is an LED for night illumination.

The operation switches 13a to 13d are used to input, for example, loading, unloading, waiting, and rest of the work section, and the operation switch 13e is used to cancel the work section input by operating the operation switches 13a to 13d. Each assigned to enter.
The indicator LEDs 137a to 137d are provided corresponding to the respective operation switches 13a to 13d, and are turned on when the input work category is entered.

Of the five sensor switches 14a to 14e connected through the I / F 135, 14a is an actual vehicle tariff switch of a taxi, and 14b is turned on by mounting a recording medium on a first external recording device, for example. Switch 14c is a switch that is turned on when the recording medium is attached to the first external recording device, 14d is an operation switch of a loading device mounted on the vehicle, and 14e is an unloading device mounted on the vehicle. It corresponds to each operation switch.

Switch SW1 of the setting switch 133
Of SW1 to SW8, SW1 to SW3 are used to set a running detection time to be described later, SW4 to SW6 are used to set a stop detection time, SW7 is used to set a running switching mode (auto / manual), and SW8 is used to set an inspection mode start.

In the configuration outlined above, the control box 13 is provided with a work section recording needle drive mechanism 11a in the tachograph body 11 in response to the input of a signal from the sensor switch 14 and the operation of the operation switches 13a to 13e.
The rotary driving source 111 is driven, and recording of 9 items as shown in FIG. 10 is performed by the two recording needles operated by the driving of the driving source 111.

As can be seen from FIG. 10, of the nine recording items, No1 and No2 are running records (actual vehicle running and running), No3 and No4 are external records (A and B), and No5 to No.
No. 8 is a work record (loading, unloading, waiting and rest), and No. 9 is a stop record.

In the actual vehicle traveling record, it is judged that the vehicle is traveling by the traveling pulse from the traveling sensor 12,
When the vehicle is a taxi and the tariff is a real vehicle and the sensor switch 14a is turned on, a thick line is drawn on both of the two recording hands, and the traveling record is obtained by the traveling pulse from the traveling sensor 12. When it is determined that the vehicle is traveling, this is performed by drawing a thick line on the upper recording needle and a thin line on the lower recording needle.

In the external recording A, when the sensor switch 14b is on, a thick line is drawn on the upper recording needle and a middle line is drawn on the lower recording needle, and external recording B is an upper recording needle when the sensor switch 14c is on. The drawing is performed by drawing a thin line and a middle line on the lower recording needle.

In the loading record, when the sensor switch 14d is turned on or the loading operation switch 13a is turned on, a middle line is drawn on the upper recording needle and a thin line is drawn on the lower recording needle. When the sensor switch 14e is turned on or the unloading operation switch 13b is turned on,
The middle line is drawn on the upper and lower recording hands, and the standby recording is performed by drawing the middle line on the upper recording hand and the thick line on the lower recording hand when the standby operation switch 13c is turned on. When the switch 13d is turned on, this is performed by drawing a thin line on the upper recording needle and a thick line on the lower recording needle. The stop recording is performed by drawing a thin line on each of the recording needles while there is no other recording input after the reset operation switch 13e is turned on.

In carrying out the above-mentioned recording, as shown in FIG. 10, in order not to cause a problem when an external signal is input from the sensor switches 14a to 14e and an ON operation of the operation switches 13a to 13e occurs at the same time. Priorities are set. That is, first, the recording based on the input of the external signal is prioritized. Among them, the highest priority items are actual vehicle traveling, the second item is traveling, the third item is loading, the fourth item is unloading, and the fifth item is the external record A. , The sixth item is the external record B. After that, recording based on the operation of the operation switch is performed in the priority order of loading, unloading, waiting, resting and stopping.

In order to record each record item described above with reference to FIG. 10 by a combination of two lines having three different thicknesses, the coil 111b ₁ of the rotary drive source 111 of the work section recording needle drive mechanism 11a, 111b ₂ and 111
energization to b ₃ may be controlled to perform a pulse-like current pattern as shown in FIG. 11.

The running detection time and the stop detection time set by the switches SW1 to SW3 of the setting switches 133 are, as shown in FIG. 12, a combination of the ON states of the switches SW1 to SW3 and SW4 to SW6. Depending on the setting, 0 seconds, 15 seconds, ...

This set traveling detection time is used to determine the traveling state based on the traveling speed measured based on the traveling pulse from the traveling sensor 12, and perform traveling recording based on this determination. As shown in 13, when the measured traveling speed is equal to or higher than a predetermined traveling detection speed of, for example, 1 km / h, it is determined that the vehicle is in the traveling state when the traveling detection time continues for the traveling detection time or longer. The stop detection time is used to determine the stop state based on the travel speed measured based on the travel pulse from the travel sensor 12 and to record the travel after this determination. As shown in FIG. After the vehicle speed becomes equal to or less than a predetermined travel detection speed of, for example, 0.5 km / h, the travel recording is continued for the stop detection time.

When the traveling switching mode (auto / manual) set by the switch SW7 of the setting switches 133 is auto, for example, FIG.
As shown in (a), for example, when the traveling pulse is input from the traveling sensor 12 while the loading operation switch 13a is turned on once, the loading in the on state is automatically turned off and the recording is recorded as traveling recording. At the same time as switching, the load indicator LED 137a is turned off, and thereafter, traveling and stopping are recorded based on the traveling pulse from the traveling sensor 12.

On the other hand, in the case of manual, for example, as shown in FIG.
As shown in (b), for example, when a traveling pulse from the traveling sensor 12 is input while the loading operation switch 13a is turned on, the buzzer BZ is sounded to give an alarm to the crew, and the reset operation by the reset operation switch 13e. Prompt. Unless a release operation is performed in response to this buzzer, the loading indicator LED 137a remains lit. However, according to the above-described priority of recording, recording is performed preferentially by the traveling pulse from the traveling sensor 12. . Further, when the traveling pulse from the traveling sensor 12 disappears and the vehicle stops, the recording returns to the original loading record.

The outline of the operation has been described above, but a more detailed description will be given below with reference to the flowcharts of FIGS. 15 to 24 showing the work performed by the CPU 132 according to a predetermined program.

The CPU 132 starts its operation when the power is turned on, and in the first step S1, the CPU 132
Initialization such as clearing various memory areas configured in a RAM (not shown) in 132 is performed. Thereafter, the process proceeds to step S2, where it is determined whether or not the switch SW8 is on, that is, whether or not the inspection mode start is set. Now, the switch S of the setting switch 133
If W8 is on, the determination in step S2 is YES, and the inspection operation in steps S3 to S10 described below is performed.

It should be noted that the CPU 132 is shown in FIG. 16 every 10 ms.
The timer interrupt shown in (1) is executed, and the first step S1a is executed.
In step S1b, the timer T1 for the inspection mode, which expires in 120 seconds for use in the inspection mode, is advanced.
, And in step S1c, the buzzer timer T3 is incremented, and the process returns to the step executed before the timer interruption. In addition, the CPU 132
FIG. 1 shows that each time a running pulse is input from the running sensor 12,
The external interrupt shown in FIG. 7 is executed, and in step S1d, the process returns to the step executed before the external interrupt after the speed measurement process is performed based on the input traveling pulse.

In step S3, it is determined whether or not the timer T1 stepped in step S1a of the timer interruption has timed out, that is, 120 seconds have elapsed, and the time has passed. If the determination is NO, the process proceeds to step S7, where it is determined whether the content of the inspection counter CK is 0 or 2.
Inspection counter CK immediately after cleared in initialization
Is 0. In this case, the process proceeds to step S8, where the actual vehicle running record described above with reference to FIG.
A signal for energizing the coil with the pulse-shaped energizing pattern shown in FIG. 1 is output to the rotary drive source 111 through the I / F 139, and the process returns to step S2. Thereafter, until the determination in step S3 becomes YES, That is, 120
Steps S2, S3, S7 and S8 are repeatedly executed until the second has elapsed, whereby both of the two recording needles draw a thick line for 120 seconds.

When the determination in step S3 is YES, the process proceeds to step S4, where the content of the inspection counter CK is incremented, and then proceeds to step S5. In step S5, it is determined whether or not the content of the inspection counter CK is 3 or more. If the determination is NO, the process proceeds to step S7, where the content of the inspection counter CK is 0 to 2 as described above. Is determined. If the result of this determination is that the content of the inspection counter CK is 1, the flow proceeds to step S9, where the coil is energized in the pulse-shaped energizing pattern shown in FIG. 11 for performing the unloading recording described above with reference to FIG. I / F 139
Is output to the rotation drive source 111 through step S2, and then returns to step S2.
Steps S2, S3, S7 and S9 are repeatedly executed until both of the two recording hands become 1
The center line is drawn for 20 seconds.

When the determination in step S3 is YES, the process proceeds to step S4, where the content of the inspection counter CK is incremented, and then the process proceeds to step S5. In step S5, it is determined whether or not the content of the inspection counter CK is 3 or more. If the determination is NO, the process proceeds to step S7, where the content of the inspection counter CK is 0 to 2 as described above. Is determined. If the result of this determination is that the content of the inspection counter CK is 2, the flow proceeds to step S10, where the coil is energized in the pulsed energization pattern shown in FIG. 11 for performing the stop recording described above with reference to FIG. I / F13
After outputting to the rotary drive source 111 through 9, the process returns to step S2, and then the determination in step S3 is YE.
Steps S2, S3, S7 and S10 are repeatedly executed until S is reached, whereby both of the two recording needles draw a fine line for 120 seconds.

As described above, each of the two recording needles has a thick line,
It is possible to perform the operation of drawing the middle line and the thin line on the chart paper, and by observing the drawing on the chart paper obtained by this operation, each recording needle can normally draw the predetermined line at the predetermined position on the chart paper. It can be checked whether it can be drawn.

Next, when the determination in step S2 is NO and the inspection mode is not selected, a traveling pulse is input from the traveling sensor 12 through the I / F 134, and it is determined that traveling is being performed by this traveling pulse. When
If the determination in step S11 is YES, step S12
Proceed to.

In step S12, it is determined whether the switch SW7 of the setting switch is set to auto or manual, and when it is set to auto, a signal for turning off the buzzer is sent to the I / F1 in step S13.
38 is output. On the other hand, when the switch SW7 is set to the manual mode, it is determined in step S15 whether or not stop recording is currently performed. When stop recording is not performed, a signal for turning on the buzzer in step S16 is sent to the I / F 138. The buzzer sounds when the vehicle starts running. If stop recording is currently being performed, a signal to turn off the buzzer is output to the I / F 138 in step S17.

Then, it is determined in step S1 whether or not the vehicle is an actual vehicle.
At 4, it is determined whether or not the sensor switch 14a is on. If it is an actual vehicle, step S18
In step S1, it is determined whether or not the actual vehicle running or running record is being performed.
In step 9, the travel detection time set by the setting switch 133 is set in the delay timer. When recording is currently being performed, a predetermined time of, for example, 2 seconds is set in the delay timer. Until it is determined in step S21 that the set delay time has elapsed, the recording pattern currently being output is continuously output in step S22.

When the delay time elapses, it is determined in step S23 whether it is auto or manual. When it is auto, in step S24 the stop recording pattern is stored after the traveling is stopped so that the stop recording pattern is stored and then the process proceeds to step S25 to use for the indicator. Turn off the LED and continue with step S
In step 26, the output pattern is changed to the actual vehicle traveling record and output, and then the process returns to step S2. Step S11 is performed until the determination in step S11 or S14 becomes NO, that is, until the vehicle stops running or is not a real vehicle.
The actual vehicle running record output at 26 is continuously performed. On the other hand, in the case of the manual operation, the current recording pattern is stored in step S27 in order to make the recording pattern currently being output after the driving stop, the process proceeds to step S26, and the output pattern is changed to the actual vehicle traveling record and output. It returns to step S2.

When the determination in step S14 is NO, that is, when the vehicle is not an actual vehicle, it is determined in step S28 whether or not actual vehicle traveling or traveling recording is currently performed. If no recording is performed, the traveling time detected by the delay timer is set in the delay timer in step S29. When it is set and recording is being performed, the delay timer is set to 2 seconds in step S30. After setting the time in the delay timer, it is determined in step S31 whether or not the delay time has elapsed. If the delay time has not elapsed, the recording pattern currently being output is continuously output in step S32.

When the delay time has elapsed, step S
In step S33a, it is determined whether the vehicle is in the automatic mode or in the manual mode. If the mode is in the automatic mode, the stop recording pattern is stored in order to perform the stop recording after the vehicle stops, and the process proceeds to step S34a to turn off the indicator LED. Is changed to the running record and output, and then the process returns to step S2. And
The travel recording output in step S35a is continuously performed until the determination in step S11 or S14 becomes NO, that is, until the vehicle stops running or becomes an actual vehicle. On the other hand, in the case of manual, the current recording pattern is stored in step S36a after the traveling is stopped and the current recording pattern is stored, and then the process proceeds to step S35a to change the output pattern to traveling recording and output the same. Return to S2.

When the determination in step S11 is NO, that is, when the vehicle is no longer running, the buzzer is turned off in step S11a, and then the sensor switch 14d is turned on in step S33. Determine if it is a load. When the sensor switch 14d is ON, it is determined in step S33 whether or not the loading recording pattern is currently being output. When not outputting, the delay timer is set to 2 seconds in step S35, and then step S36.
In step S37, it is determined whether or not 2 seconds have elapsed since the loading indicator LED was turned on. If not, in step S38, the recording pattern currently being output is continuously output for 2 seconds. When is passed, the output pattern is changed to the loading record pattern and output in step S39, and then the process returns to step S2. Then, the loading recording pattern is output, and if the determination in step S34 is YES, step S3
Steps 5 to S37 are skipped, the loading record pattern is changed and output in step S39, and the process returns to step S2.

When the determination in step S33 is NO,
That is, when the sensor switch 14d is not turned on, next, in step S40, the sensor switch 14e
It is determined whether or not is turned on. Sensor switch 14
When e is on, that is, when unloading is performed, it is determined in step S41 whether the unloading recording pattern is currently being output. If not, the delay timer is set to 2 seconds in step S42, and after that, the unloading indicator LED is turned on in step S43, and it is determined in step S44 whether 2 seconds have elapsed. Sometimes, in step S45, the recording pattern currently being output is continuously output,
When 2 seconds have passed, the output pattern is changed to the unloading record pattern in step S46, and is output, and then the process returns to step S2. When the unloading record pattern is output and the determination in step S41 is YES, steps S42 to S44 are skipped, the unloading record pattern is changed and output in step S46, and the process returns to step S2.

When the determination in step S40 is NO,
That is, when the sensor switch 14e is off, it is next determined in step 47 whether or not the external recording A is performed based on whether or not the sensor switch 14b is on.
When the sensor switch 14b is ON, that is, when the external recording A is set, it is determined in step S48 whether the external recording A pattern is currently being output. If not, the delay timer is set to 2 seconds in step S49. Thereafter, it is determined in step S50 whether 2 seconds have elapsed. If not, the recording pattern currently being output is continued in step S51. After two seconds have elapsed, the output pattern is changed to the external recording A pattern in step S52, and the process returns to step S2. And external record A
When the pattern is output and the determination in step S48 is YES, steps S49 to S50 are skipped, the external recording A pattern is changed and output in step S52, and then the process returns to step S2.

When the determination in step S47 is NO,
That is, when the sensor switch 14b is not turned on, the sensor switch 14c is next operated in step S53.
It is determined whether or not is turned on. Sensor switch 14
When c is on, that is, when external recording B is set,
In step S54, it is determined whether the external recording B pattern is currently being output. When not outputting,
In step S55, the delay timer is set to 2 seconds,
Thereafter, it is determined in step S56 whether or not 2 seconds have elapsed. If not, the recording pattern currently being output is continuously output in step S57.
After the elapse of the second, the output pattern is changed to the external recording B pattern in step S58 and output, and then the process returns to step S2. When the external recording B pattern is output and the determination in step S54 is YES,
Steps S55 to S56 are skipped, the output is changed to the external recording B pattern in step S58, and the process returns to step S2.

When the determination in step S53 is NO,
That is, when the sensor switch 14c is off, it is next determined in step 59 whether the loading operation switch 13a is on. When the loading operation switch 13a is ON, it is determined in step S60 whether or not the loading recording pattern is currently being output. If not, the delay timer is set to 2 seconds in step S61, then the loading indicator LED is turned on in step S62, and the buzzer sounds for 0.1 second in step S63, and then 2 seconds in step S64.
It is determined whether or not seconds have elapsed. If the elapsed time has not elapsed, the recording pattern currently being output is continuously output in step S65, and if two seconds have elapsed, the operation proceeds to step S66.
After the output pattern is changed to the loading record and output, the process returns to step S2. Then, the loading record pattern is output and the determination in step S60 is YES.
Then, the process skips steps S61 to S64, changes to the loading recording pattern in step S66, outputs the pattern, and returns to step S2.

When the determination in step S59 is NO,
That is, if the loading operation switch 13a is not turned on, then in step S67, the unloading operation switch 1
It is determined whether 3b is on. When the unloading operation switch 13b is turned on, that is, when unloading is performed,
In step S68, it is determined whether the unloading recording pattern is currently being output. If not, the delay timer is set to 2 seconds in step S69, and then the unloading indicator LED is set in step S70.
Is turned on and the buzzer is sounded for 0.1 second in step S71, and it is determined in step S72 whether two seconds have elapsed. If not, step S
At 73, the currently output recording pattern is continuously output, and after 2 seconds have elapsed, the output pattern is changed to the unloading recording pattern at step S74, and the process returns to step S2. If the unloading recording pattern is output and the determination in step S68 is YES, steps S69 to S72 are skipped and step S68 is performed.
In 74, after changing to the unloading record pattern and outputting, the process returns to the step S2.

When the determination in step S67 is NO,
That is, when the unloading operation switch 13b is off, it is next determined in step 75 whether the standby operation switch 13c is on. When the standby operation switch 13c is on, it is determined in step S76 whether or not the standby recording pattern is currently being output. When not outputting, the delay timer is set to 2 seconds in step S77, the standby indicator LED is turned on in step S78, and the buzzer sounds for 0.1 second in step S79, and then 2 seconds has elapsed in step S80. Or not. If it has not elapsed, the recording pattern currently being output is continuously output in step S81, and if 2 seconds have elapsed, step S8
In step 2, the output pattern is changed to standby recording and output, and the process returns to step S2. Then, the standby recording pattern is output, and the determination in step S76 is YE.
When S is reached, steps S77 to S80 are skipped, the standby recording pattern is changed and output in step S82, and then the process returns to step S2.

When the determination in step S75 is NO,
That is, when the standby operation switch 13c is not turned on, next, in step S83, the rest operation switch 1
It is determined whether 3d is on. When the break operation switch 13d is on, that is, when it is a break,
In step S84, it is determined whether a break recording pattern is currently being output. If not, the delay timer is set to 2 seconds in step S85, and then the break indicator LED is set in step S86.
Is turned on and the buzzer is sounded for 0.1 second in step S87, and it is determined in step S88 whether two seconds have elapsed. If not, step S
At 89, the currently output recording pattern is continuously output, and after 2 seconds have elapsed, the output pattern is changed to a rest recording pattern at step S89, and the process returns to step S2. When the break recording pattern is output and the determination in step S84 is YES, steps S85 to S88 are skipped and step S84 is skipped.
At 90, the break recording pattern is changed and output, and the process returns to step S2.

When the determination in step S83 is NO,
That is, when the break operation switch 13d is off, it is then determined in step 91 whether the reset operation switch 13e is on. Reset operation switch 1
When 3e is on, the buzzer is sounded for 0.1 seconds in step S92, the indicator LED is turned off in step S93, and it is determined in step S94 whether the vehicle is currently traveling or traveling. If the determination in step S94 is NO, the delay timer is set to 2 seconds in step S95. If the determination is YES, the stop detection time is set in the delay timer in step S95a, and then the process proceeds to step S96 to determine whether the delay time has elapsed. Is determined. If not, step S
In step S98, the output pattern is changed to stop recording and output in step S98.
Return to step S until the next recording is performed.
After outputting the stop recording pattern at 97 and S98, the process returns to step S2.

When the determination in step S91 is NO,
That is, when the reset operation switch 13e is not turned on, it is next determined in step S99 whether or not the vehicle is currently traveling or traveling, and if the determination is NO, the recording pattern currently being output is continued in step S106. The output is continued and the process returns to step S2. If the current vehicle running or running record is present and the determination in step S99 is YES, it is determined in step S100 whether the vehicle is auto or manual. If it is auto, the indicator LED is turned off in step S101, and then step S95a is performed. Proceed to and set the stop detection time in the delay timer. On the other hand, if it is manual, the stop detection time is set in the delay timer in step S102, and the flow advances to step S103 to determine whether or not the delay time has elapsed. If not, the currently output recording is output in step S104. The pattern is continuously output, and when the delay time elapses, step S
In 105, the output pattern is changed to the actual vehicle traveling or the recording before the traveling recording and is output, and then the process returns to step S2.

As described above, the CPU 132 causes the traveling pulse from the traveling sensor 12, the signal from the sensor switch 14, the setting signal generated by the setting switch 133, and the signal generated by turning on the operation switches 13a to 13e. Is input, and these are processed according to a predetermined program, so that the rotary drive source 1 of the work section recording needle drive mechanism 11a can perform desired recording.
A signal for driving and controlling the LED 11 is output via the I / F 139, and the ON / OFF of the indicator LED is controlled.

In particular, the operation for running recording as shown in FIG. 13 will be described with reference to a flowchart. now,
When the vehicle is stopped, steps S11 and S3 are performed.
3, S40, S47, S53, S59, S67, S7
5, S83, S91, S99, and S106 are repeatedly executed to perform stop recording. Thereafter, when the vehicle starts traveling and the traveling speed becomes equal to or higher than the traveling detection speed, step S11 is executed.
Is YES, and if the vehicle is in the actual vehicle state at this time, the process proceeds to step S19 via step S12 and the like. In step S19, the travel detection time is set in the delay timer, step S22 is executed until the set delay time is determined in step S21, and the stop recording currently output is continuously performed. And
After the delay time has elapsed, the output pattern is changed from stop to actual vehicle traveling and output in step S26.

If the vehicle is not in the actual state, step S14
Then, the process proceeds to step S29, in which the travel detection time is set in the delay timer, and step S32 is executed until it is determined in step S31 that the set delay time has elapsed, and the stop record currently output is recorded. Continue to do so. Then, after the delay time has elapsed, step S
At 35a, the output pattern is changed from stop to running and output.

Thereafter, the vehicle enters the stop operation, the traveling speed becomes equal to or lower than the stop detection speed, and the determination in step S11 is N.
When it becomes O, it goes through step S11a and so on to step S9.
9. If it is auto, in step S95a, the stop detection time is set in the delay timer. Then, after continuously outputting the currently output recording pattern in step S97 until the set delay time elapses,
By changing the output pattern to stop recording and outputting in step S98, traveling recording as shown in the figure is performed.

As described above, since the previous recording is continuously performed during the traveling detection time and the stop detection time after the traveling detection or the stop detection, the traveling detection time and the stop detection are detected by the vehicle due to traffic congestion or the like. Even if the running / stopping is repeated for a short time at a time interval shorter than the time, the record is kept in the state of the stop record or the run record before that.

Next, the switch SW of the setting switch 133
The recording operation in the case where the setting is set to auto by 7 will be described with reference to FIG. now,
When the vehicle is stopped and the loading operation switch 13a is turned on, loading recording is performed and the loading indicator LED is turned on. When the vehicle starts running from such a state, the determination in step S11 is YE
In S, the process proceeds to step S14 via steps S12 and S13.
Steps S3 through S29, S31, S32, S32a
Go to 3. In step S33a, a stop recording pattern is stored in order to perform stop recording after stopping traveling, and thereafter, the indicator LED is turned off in step S34a, and the process proceeds to step S35a to change the output pattern to traveling recording and output it. In the case of an actual vehicle, step S2
LED for indicator by execution of 4 to S26
Is turned off and the actual vehicle running record is made.

After that, when the vehicle stops, step S1
If the determination at 1 is NO, steps S11a, S33, S
40, S47, S53, S91, S99, S100, S
The process proceeds to step S98 via 101, S95a, S96, S97, etc., where the output pattern is changed to stop recording and output.

As described above, when the automatic mode is set, the actual vehicle traveling or traveling recording is automatically performed according to the traveling of the vehicle even if the loading operation switch 13a is turned on, and then the vehicle is stopped. Since the stop recording will be performed when necessary, the crew member does not have to cancel the operation switch.

The recording operation when set to manual will be described with reference to FIG. 14B and the flowchart.
Now, in the state where the vehicle is stopped and the loading operation switch 13a is turned on, loading recording is performed and the loading indicator LED is turned on. When the vehicle starts running from such a state, the determination in step S11 becomes YES, and the process proceeds to step S16 through step S12 and step S15 to turn on the buzzer to sound, and when the vehicle is not an actual vehicle, steps 28, S29, and S31. , S3
2. The process proceeds to step S36a via S32a. In step S36a, the current loading recording pattern is stored in order to make the currently output loading recording pattern after the traveling stop,
Then, the process proceeds to step S35a, where the output pattern is changed to the traveling record and output. In the case of a real vehicle, the actual vehicle running record is performed by executing steps S27 and S26.

After that, when the vehicle stops, step S1
If the determination at 1 is NO, steps S11a, S33, S
40, S47, S53, S91, S99, S100, S
The process proceeds to step S105 via 102, S103, and S104, where the output pattern is changed to the actual vehicle traveling or the loading record before traveling recording and output.

As described above, when the vehicle is traveling while the loading operation switch 13a is turned on when the manual is set, the recording is automatically switched to the actual vehicle traveling or the traveling recording, but the buzzer sounds. Then, the loading operation switch 13a is warned that the loading switch 13a is still turned on, and when the vehicle stops, the record is automatically switched from the actual vehicle traveling or the traveling record to the loading record. In such a case, the traveling record and the loading record are automatically switched without turning on / off the loading operation switch one by one.

In the above-described embodiment, the rotary drive source 111 causes the cam 112 to reciprocally rotate about the origin position within a predetermined angle range depending on the work section, and the cam 112 is reciprocally rotated within the predetermined angle range. When rotating from the origin position in one direction, one recording needle is reciprocated with medium amplitude and large amplitude according to its rotation angle, and when rotating from the origin position in the other direction, the other recording needle is rotated with medium amplitude and large amplitude. By making a reciprocating movement with a large amplitude, the single cam 112 draws a thick line, a middle line, and a thin line on the chart paper 2 by the recording needles 113U and 113D. Alternatively, each recording needle may be driven by a separate cam.

In the embodiment, the rotary drive source 111 is
First to third coils 111b ₁ , 111b ₂ , 111
b ₃ selectively centered both directions is reciprocatingly rotated within a range of 45 ° or 90 ° to the home position the magnet rotor 111c by a magnetic field generated by energizing the cam 112 in the rotating
Is reciprocated in a predetermined angle range, so that the recording needles 113U and 113D indicate a thick line on the chart paper 2,
Although the middle line and the thin line are drawn, the rotation of the cam 112 may be controlled by servo control using a potentiometer.

In the above-described embodiment, one work segment is recorded by combining the line thicknesses recorded by the two recording needles, but the present invention uses any one recording needle. Running with / without recording of the thickness recording line
It can be applied effectively to those that record outages.

[0078]

As described above, according to the present invention, when the running of a vehicle is detected while recording the work classification input when the vehicle is stopped, the travel recording is performed instead of the work classification recording. In addition, since it is not necessary to perform stop recording according to the detection of the stop of the vehicle thereafter and release the work division at each end of the work, the effect of simplifying the operation can be obtained.

Further, when the running classification of the vehicle is detected while recording the work classification input when the vehicle is stopped, the running recording is performed instead of the recording of the work classification, and in response to the subsequent detection of the stop of the vehicle. If the original work classification is recorded and the work classification is not canceled each time the work is completed, the record is automatically switched to the travel record, and the next work classification is the same and the work classification is not canceled. Since it is possible to record the original work section again by stopping the operation, the operation can be simplified. In addition, while running recording, an alarm sound is generated until the entered work classification is canceled, so when the next work classification changes, the work classification can be canceled without forgetting to follow this warning sound. Therefore, it is possible to prevent the operation of canceling the work division from being forgotten and the wrong work division to be recorded.

Since one of the above operations can be selected, it is not necessary to cancel the input work division at each end of the work, or the input work division is recorded at each end of the work. Even if you do not cancel it, the record will be automatically switched to running record, and when the next work classification is the same, if you do not cancel the input work classification, the original work classification can be recorded again by stopping the vehicle. It is possible to select whether or not to enable the recording according to need, and it is also possible to obtain the effect of abundant product variations.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of a work management tachograph according to the present invention.

FIG. 2 is a diagram showing a system configuration of an embodiment of a work management tachograph according to the present invention.

FIG. 3 is a diagram showing a circuit configuration of the system of FIG. 2;

4 is an exploded perspective view showing a configuration of a recording needle drive mechanism in FIG.

FIG. 5 is a perspective view showing a configuration of the rotary drive source in FIG. 4 with a part thereof cut away.

FIG. 6 is a diagram for explaining the operation principle of the rotary drive source in FIG.

FIG. 7 is a plan view showing a cam groove shape of the cam in FIG. 4;

FIG. 8 is an expanded view of the cam groove in FIG. 7;

FIG. 9 is a diagram showing a circuit configuration of a control box in FIG. 3;

FIG. 10 is a diagram for explaining recording performed by control by the control box in FIG. 9;

11 is a diagram showing an energization pattern for each coil for performing the recording of FIG.

FIG. 12 is a diagram showing how to set a traveling detection time and a stop detection time.

FIG. 13 is a diagram for explaining a method of running recording performed using a running detection time and a stop detection time.

FIG. 14 is a diagram for explaining a recording method in the case of auto and manual.

FIG. 15 is a flowchart showing a part of the work performed by the CPU in FIG. 9 according to a program.

16 is a flowchart showing a timer interrupt process of the CPU in FIG.

FIG. 17 is a flowchart showing an external interrupt process of the CPU in FIG. 9;

18 is a flowchart showing another part of the work performed by the CPU in FIG. 9 according to a program.

FIG. 19 is a flowchart showing yet another portion of the work performed by the CPU in FIG. 9 according to a program.

20 is a flowchart showing another part of the work performed by the CPU in FIG. 9 according to a program.

FIG. 21 is a flowchart showing yet another portion of work performed by the CPU in FIG. 9 according to a program.

FIG. 22 is a flowchart showing a part of a job performed by a CPU in FIG. 9 according to a program.

FIG. 23 is a flowchart showing another part of the work performed by the CPU in FIG. 9 according to a program.

24 is a flowchart showing yet another part of the work performed by the CPU in FIG. 9 according to a program.

FIG. 25 is a diagram showing a chart paper on which work categories are recorded by a conventional tachograph.

[Explanation of symbols]

11a Recording needle driving means 113U, 113D Recording needle 12 Travel sensor 13a-13e Work classification input means (operation switch) 132a Travel detection means (CPU) 132b First control means (CPU) 132c Second control means (CPU) SW7 Selection means (switch) 2 Chart paper BZ Alarm sound generation means (buzzer)

Claims (3)

(57) [Scope of utility model registration request] 1. A work classification input means for inputting a classification of work to be performed when a vehicle is stopped, and a recording needle for recording the work classification input by the work classification input means on a chart paper. In a work management tachograph provided with a recording needle drive means, a travel sensor that generates a travel signal according to the travel of the vehicle, and travel detection means that detects the travel of the vehicle based on the travel signal generated by the travel sensor, When the recording needle drive means is recording the work division input by the work division input means, the work division input means inputs the record needle drive means in response to the traveling detection of the vehicle by the traveling detection means. The recording is performed instead of the recorded work classification, and the recording needle driving means is caused to perform the stop recording in response to the detection of the stop of the vehicle thereafter by the travel detecting means. A tachograph for work management, comprising: 2. A work classification input means for inputting a classification of work to be performed when a vehicle is stopped, and a recording needle for recording the work classification input by the work classification input means on a chart paper. In a work management tachograph including recording needle driving means, a travel sensor that generates a travel signal according to the travel of the vehicle, and travel detection means that detects the travel of the vehicle based on the travel signal generated by the travel sensor, When the recording needle drive means is recording the work division input by the work division input means, the work division input means inputs the record needle drive means in response to the traveling detection of the vehicle by the traveling detection means. The traveling needle is recorded instead of the recorded work division, and the recording needle driving means records the original work division in response to the detection of the vehicle stop by the traveling detection means thereafter. A second control means for performing recording, and an alarm sound until the work classification input by the work classification input means is canceled while the second control means causes the recording needle driving means to perform travel recording. A work management tachograph, comprising: an alarm sound generating means for generating the alarm sound. 3. A work classification input means for inputting a classification of work to be performed when the vehicle is stopped, and a recording needle for recording the work classification input by the work classification input means on a chart paper. In a work management tachograph provided with a recording needle drive means, a travel sensor that generates a travel signal according to the travel of the vehicle, and travel detection means that detects the travel of the vehicle based on the travel signal generated by the travel sensor, When the recording needle drive means is recording the work division input by the work division input means, the work division input means inputs the record needle drive means in response to the traveling detection of the vehicle by the traveling detection means. The recording is performed instead of the recorded work classification, and the recording needle driving means is caused to perform the stop recording in response to the detection of the stop of the vehicle thereafter by the travel detecting means. The first needle control means and the recording needle drive means are recording the work category input by the work category input means, the record needle drive means is responsive to the traveling detection of the vehicle by the traveling detection means. In place of the record of the work category input by the work category input means, the travel record is performed, and in accordance with the detection of the stop of the vehicle thereafter by the travel detection means, the record needle drive means records the original work category. Second control means to be performed, and while the second control means is causing the recording needle drive means to perform traveling recording, an alarm sound is generated until the work category input by the work category input means is canceled. A work management tachograph comprising: an alarm sound generating means; and a selecting means for selectively operating one of the first and second control means.