JP4095460B2 - Operation management system for commercial vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an operation management system that manages the operation of commercial vehicles such as trucks, taxis, and motorcycles, and in particular has a function of detecting the state of a curve on which the vehicle is traveling.Commercial vehicleIt relates to the operation management system.
[0002]
[Prior art]
[Patent Document 1]
  JP-A-11-316899
[0003]
  In recent years, the use of OA in the transportation industry has been extended not only in offices but also in trucks. The contents of work records, mileage, and speed (hereinafter referred to as vehicle speed) are automatically recorded individually, and after returning to work. An operation management system that outputs from a computer in the office has been introduced and is now in practical use.
[0004]
  Fig. 8 shows conventionalCommercial vehicleAn example of an operation management system is shown. In FIG. 8, 51 is a vehicle-mounted device of a conventional operation management system, 52 is a vehicle equipped with this vehicle-mounted device 51, 53 is an office for carrying out transportation work, for example, 54 is arranged on the office 53 side, and each vehicle-mounted device 51 It is a server of the operation management system that performs management of each vehicle 52 and overall business record by totaling the operation management data recorded by.
[0005]
  The in-vehicle device 51 is arranged in each part of the vehicle 52 to detect various vehicle state signals such as vehicle speed and engine speed, and an input terminal (handy terminal) 57 for inputting work contents by the crew member 56. And a storage medium (memory card) 58 that records the input work content as operation management data together with various data such as vehicle state data as work content data.
[0006]
  On the other hand, the server 54 has a computer 54a for performing predetermined processing, a card reader 59 for reading operation management data recorded on the memory card 58, and a printer 60 for printing business records analyzed by the computer 54a. ing.
[0007]
  Each vehicle 52 circulates a plurality of work points 61 according to a route instructed from the office 53 side with the memory card 58 set in the in-vehicle device 51. And when the crew 56 loads and unloads luggage,ThatThe work contents are input using the input terminal 57, and the in-vehicle device 51 operates the vehicle state (vehicle speed, direction, engine speed, etc.) in addition to the input work contents (for example, loading, unloading, rest, etc.). The management data is recorded in the memory card 58 in time series. Further, when all the working points 61 are visited and returned to the office 53, the memory card 58 is taken out from the in-vehicle device 51 and inserted into the card reader 59, so that the daily work record can be reported.
[0008]
  FIG. 9 is a diagram showing an operation surface of the input terminal 57 in the conventional vehicle-mounted device 51. In FIG. 9, 62 is a keyboard for inputting work contents, and 63 is a display unit for confirming the input of work contents and monitoring time and vehicle status. The keyboard 62 is provided with various keys 64 each associated with work contents (loading, unloading, car washing inspection, etc.) and a plurality of keys such as a numeric keypad 65. By operating the keys 64 and 65, the work point and the work content can be input.
[0009]
[Problems to be solved by the invention]
  By the way, the running vehicle is a sharp curveRanIf this sharp curveTravelingTo detect and warnvehicleIn operation management systems, the vehicle must be equipped with an accelerometer that measures the lateral acceleration that the vehicle receives when driving in a vehicle curve, and a high-accuracy gyro that outputs a signal according to the angular velocity in the horizontal direction of the vehicle. It was. In addition, sensor parts such as accelerometers and gyros must be installed in a predetermined position and direction with respect to the vehicle in order to operate with high accuracy. Accordingly, the mounting position of the in-vehicle device is also limited.
[0010]
  Therefore, the conventionalCommercial vehicleIn the operation management system,VehicleSharp curveTravelingSensor parts such as accelerometers and gyros are required to detect the sensor, and construction work for attaching such sensor parts to the vehicle is also required, which tends to increase costs, and sensors such as accelerometers and gyros Since the mounting positions and directions of parts and in-vehicle devices with respect to the vehicle are restricted, the crew may not be easy to use in the vehicle.
[0011]
  In addition, as a conventional technique provided with a gyro and configured to issue a warning by detecting a sharp curve, for example, a vehicle curve traveling warning device described in Patent Document 1 is known, but this conventional technique also uses a gyro. Since the vehicle is used to detect the angular velocity, the same problem as described above occurs.
[0012]
  The present invention has been made in order to solve the above-described problems, and a vehicle that is running is sharply curved without using a sensor component such as an accelerometer or a gyroscope.TravelingCan detectCommercial vehicleThe purpose is to provide an operation management system.
[0013]
[Means for Solving the Problems]
  In order to achieve the above object, the present invention provides:Vehicle state data including vehicle speed and engine speed, work content data and work data indicating the work content at each input point, and operation instruction data indicating the operation route of the vehicle.Operation management dataAsRecordAn in-vehicle device that has a storage unit and is mounted on a vehicle, and the operation management data that is arranged in the place where the transportation work is performed and is recorded in the storage unit of the in-vehicle device, and manages each vehicle and the overall operation record A communication vehicle that includes a communication unit that downloads the operation instruction data from the server to the in-vehicle device and uploads the operation management data from the in-vehicle device to the server.An operation management system,The in-vehicle device is provided with a curve monitoring unit for monitoring the vehicle's curve traveling,Based on the speed signal and direction signal from the GPS receiver,An angular velocity calculating means for calculating an angular velocity; an angular velocity determining means for determining whether the calculated angular velocity of the vehicle exceeds an angular velocity threshold set for each vehicle type; and the angular velocity is determined by the angular velocity determining means as the angular velocity threshold. When it is determined that the vehicle has exceeded the curve, the vehicle is assumed to have started curve driving, and when the vehicle has entered the curve, the vehicle has finished curve driving when the angular velocity is determined to be equal to or less than the angular velocity threshold. A curve start / end determination means for detecting the time when the vehicle has advanced from the curve, and a curve angle for calculating the curve angle by integrating the angular velocities from the time when the determination means detects that the vehicle has entered the curve. Calculating means, and curve determining means for assuming that the vehicle has traveled a curve when the curve angle calculated by the curve angle calculating means is equal to or greater than a predetermined angle; Of vehicleFrom the time of entering the curveBy the curve angle and curve time based on the angular velocityCalculate average angular velocityMeans for calculating an average angular velocity, and the calculatedAverage angular velocity isSet for each modelOutput warning signal when average angular velocity threshold is exceededWarning signal output means and means for counting the curve determined by the curve determination means to obtain the number of curves, and the angular velocity, curve angle, average angular velocity, curve number obtained by each means in this curve monitoring unit The data of the number of warnings is totaled and recorded, and the totaled data is transmitted from the in-vehicle device to the server via the communication means.(Claim 1).
[0014]
  Of this configurationCommercial vehicleIn operation management systemIsWhen the vehicle enters the curve, the angular velocity changes because the vehicle direction changes, and the curve monitoring unit is based on the speed signal and the direction signal from the GPS receiving unit.The angular velocity of the vehicle is calculated and the curve angle and curve time based on the angular velocity are calculated.The average angular velocity from the time of entering the curve is calculated.Set for each modelWhen the average angular velocity threshold is exceeded, a warning signal is output as a dangerous curve for the vehicle.be able to.
[0015]
  So this configurationCommercial vehicleAccording to the operation management system, it is possible to detect the running state of the vehicle based on the speed signal and the direction signal from the GPS receiver and to warn of a dangerous curve for the vehicle, so that sensor parts such as an accelerometer and a gyro This also eliminates the need to install such sensor parts on the vehicle, thereby reducing costs and eliminating the restrictions on the mounting position and direction of the in-vehicle device with respect to the vehicle. It can be used effectively, and the ease of use in the vehicle is improved for the crew.
[0016]
[0017]
[0018]
  The curve monitoring unit has an angular velocity.Set for each modelAn angular velocity determining means for determining whether or not the angular velocity threshold is exceeded, and the vehicle starts a curve when the angular velocity determining means determines that the angular velocity exceeds a predetermined angular velocity threshold.WatchIn addition, when it is determined that the angular velocity is equal to or less than the predetermined angular velocity threshold, the vehicle has finished the curve.WatchCurve start / end judgment meansAlso have.
[0019]
  for that reasonWhen the angular velocity of the running vehicle exceeds a predetermined angular velocity threshold, the vehicle starts to curveNurseWhen the angular velocity falls below a predetermined angular velocity threshold, the vehicle has finished the curve.Being seenThus, it is possible to detect when the vehicle has entered the curve and when it has advanced from the curve. For example, if you compare a bus with a passenger car, even if you turn the same curve, the change in angular velocity is differentButThe angular velocity threshold is set for each vehicle typeBecause,Whatever vehicle type it isIt becomes possible to accurately detect the time when the vehicle enters the curve and the time when the vehicle advances from the curve.
[0020]
  Also, the curveAngle calculation meansCalculates the curve angle by integrating the angular velocity from the curve start time when it is determined that the curve starts.Is a thing.
[0021]
  According to this configuration, when the vehicle enters the curve, the angular velocity is integrated (integrated with time), and the curve angle can be obtained. That is, the angle at which the vehicle is bent can be obtained.
[0022]
  Further, the curve monitoring unit is a curve determination unit that determines that the vehicle is curved when the calculated curve angle is equal to or greater than a predetermined angle.Also has.
[0023]
  ThereforeWhen the curve angle is greater than or equal to the predetermined angle, the vehicle is curvedWatchIf the curve angle is less than the predetermined angle, the vehicle is not curvedWatchbe able to. For example, even if the vehicle is traveling on a straight road, a slight curve angle usually occurs.Without carecan do.
[0024]
  In addition, the curve monitoring unit includes a curve approach information acquisition unit that acquires a curve approach speed and direction at a curve start time from the speed signal and the direction signal at that time (claim).2), The curve approach speed and direction of the vehicle can be obtained.
[0025]
  Further, the curve monitoring unit has a curve advance information acquisition means for acquiring the curve advance speed and direction at the end of the curve from the speed signal and the direction signal at that time (claim).3), The curve advance speed and direction of the vehicle can be obtained.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
  FIG. 1 relates to an embodiment of the present invention.Commercial vehicleIt is a figure which shows the example of the operation management using an operation management system. thisCommercial vehicleThe operation management system is arranged on the vehicle-mounted device 1 mounted on the vehicle 2 and, for example, on the side of the office 3 that carries out transportation work, and the operation management data recorded by each vehicle-mounted device 1.And later collected dataAnd a server 4 that manages each vehicle 2 and performs overall business recording.
[0027]
  The in-vehicle device 1 is disposed in the vehicle 2 and includes an antenna 5 of a GPS receiving unit for obtaining vehicle state data such as position data (latitude, longitude), vehicle speed, and direction of the vehicle 2, and an input for inputting work contents. A terminal 7, a wireless communication card 8 for forming a wireless LAN by digital wireless communication using a prescribed transmission protocol, and a cigar plug (a power terminal having a shape inserted into a power supply socket of the vehicle) 9 to be inserted into the vehicle 2 And.
[0028]
  The in-vehicle device 1 of the present embodiment attaches the GPS antenna 5 to an appropriate position facing the upper surface of the vehicle 2 and inserts a cigar plug 9 into a power supply socket (hereinafter referred to as a cigar socket) of the vehicle 2. It can be attached very easily without installation work of a sensor or the like to the vehicle 2.
[0029]
  On the other hand, the server 4 has a function for transferring a file to and from the in-vehicle device 1 connected via a wireless LAN, for example, a FTP (file transfer protocol) service function and a computer 4a that performs a predetermined process. In order to communicate with the wireless communication card 8 and read the operation management data recorded in the in-vehicle device 1, for example, the terminal 10 that performs communication corresponding to the standard IEEE802.11b and the business record analyzed by the computer 4a And a printer 11 for printing. Here, the communication means using the wireless LAN is shown as the communication means between the server 4 and the in-vehicle apparatus 1, but the communication means between the server 4 and the in-vehicle apparatus 1 is not limited to this, for example, a PHS line, a mobile phone line, etc. May be used.
[0030]
  Note that the transmission protocol used by the wireless communication card 8 performs communication of the standard IEEE802.11b defined by the above-mentioned IEEE (American Institute of Electrical and Electronics Engineers) 802 committee (preferably a non-profit organization WECA: Wireless In addition to the Ethernet (registered trademark) Compatibility Alliance), the PIAFS (PHS internet access forum) established by the PHS (PHS internet access forum) voluntary organization (PIAF) standard)), etc.
[0031]
  Each vehicle 2 circulates a plurality of work points 12a, 12b... According to a route instructed by operation instruction data (to be described later) downloaded from the server 4 by communication using the wireless communication card 8. Then, when the crew member 6 loads and unloads the luggage, the work content is input using the input terminal 9, and the in-vehicle device 1 records the input content in a storage unit (not shown). Further, when all of the work points 12a, 12b,... Are visited and returned to the office 3, the wireless communication card 8 becomes communicable with the terminal 10 again by entering the wireless LAN area. By uploading operation management data (to be described later) from the in-vehicle device 1 to the server 4 by communication with the vehicle 10, it is possible to report a daily work record.
[0032]
  FIG. 2 is a block diagram showing the configuration of the in-vehicle device 1. As shown in FIG. 2, the in-vehicle device 1 is connected to a GPS antenna 5, and in addition to position data such as latitude / longitude and altitude of the current position, various vehicle states such as the traveling speed and direction of the vehicle are used as vehicle information data. The GPS receiving unit 13 (hereinafter referred to as the GPS receiving unit 13 including the GPS antenna 5), the audio output unit 14 having an amplifier circuit and a speaker, and the wireless communication card 8 are detachably held, and this wireless A card interface 15 for exchanging data with the communication card 8 and a cigar plug 9 are used. For example, a power supply voltage Vi of 12V is adjusted to an output voltage Vo of a necessary magnitude and the power supply voltage Vo is momentarily interrupted. The power supply circuit 16 having a power storage function for stabilizing the voltage Vo even when the voltage Vo occurs, and the ripple of the power supply voltage Vi is used to control the energy of the vehicle 2. A rotation speed detection circuit 17 for detecting the rotational speed of the Jin 2a, has a display unit 19 for displaying the work or processing results, and a processing unit 18 for the respective components are connected.
[0033]
  In this embodiment, since the wireless communication card 8 is attached to the card interface 15, the in-vehicle device 1 enters the wireless LAN area of the terminal 10 connected to the computer 4 a in the server 4, so It is possible to perform data communication with each other via a LAN connection. Therefore, the crew member 6 automatically downloads operation instruction data from the server 4 and uploads operation management data to the server 4 without using the memory card 58 as in the conventional case shown in FIG. Can do.
[0034]
  The in-vehicle device 1 in the operation management system of the present embodiment is not limited to setting the wireless communication card 8 in the card interface 15, and the operation is performed by inserting a memory card into the card interface 15.InstructionsData and operation management data may be exchanged via a memory card.
[0035]
  The rotation speed detection circuit 17 detects a periodic ripple generated by an AC generator (alternator) 2b rotating at a rotation speed proportional to the rotation of the engine 2a, and multiplies the ripple by a predetermined constant, thereby The number of revolutions is obtained. The engine speed detection circuit 17 includes, for example, ripple passing means (not shown) that allows only the ripple generated by the AC generator 2b that is linked to the engine 2a to pass, and the engine speed is based on the ripple that has passed through the ripple passing means. The number is detected. As a result, it is possible to detect the rotational speed without being affected by the spike noise generated with the operation of the engine.
[0036]
  FIG. 3 is a block diagram for explaining the contents of the processing in the processing unit 18 of the in-vehicle device 1. Since the configuration of each unit shown in this example is realized by a program executed by the processing unit 18, it schematically shows the contents of the program processing, but these may be formed by hardware. Needless to say. The present invention is not limited to such a configuration.
[0037]
  In FIG. 3, reference numeral 30 denotes speed management means for obtaining an accurate vehicle speed using speed data obtained from the rotation speed detection circuit 17 and the GPS reception section 13, 31 denotes speed monitoring means for monitoring the vehicle speed, and 32 denotes GPS reception section 13. Position associating means for associating the work contents in a state that satisfies the input conditions of the work contents from the position data obtained from the vehicle and the vehicle speed. Reference numeral 33 denotes a storage unit in the in-vehicle device 1, and 34 denotes vehicle state data such as vehicle speed, position, and engine speed, and details of work, etc. are recorded in the storage unit 33. Enter / exit the server 4 viaOrIt is a total recording means.
[0038]
  35 is a work content confirmation means for confirming the work content to the crew member 6, 14a is a sound output means for outputting a sound signal to the sound output unit 14 having a speaker, and 19a displays the operation content and the work content. Display means for outputting a display signal to the display unit 19.
[0039]
  For example, as the operation management data 40, the storage unit 33 includes vehicle state data 41 such as a position 41a such as latitude and longitude of the vehicle 2, a vehicle speed 41b, and an engine speed 41c, and work content data 42 indicating work content at each point. The time data 43 is recorded in time series. Then, the work content input history 42 a by the crew 6 is recorded as the work content data 42. Further, the storage unit 33 records operation instruction data 44 including, for example, positions 44a such as latitude and longitude of each work point, work time 44b, work content candidates 44c and probabilities 44d.
[0040]
  The operation instruction data 44 is basically downloaded from the server 4 side or registered with the input of work contents by the crew 6, and the operation management data 40 is sequentially accumulated as the work is performed. Recorded data.
[0041]
  In addition, when the crew member 6 inputs some work by operating the input terminal 7 or the like, if this input is not already recorded in the operation instruction data 44, a new work point is specified as the operation instruction data. Work point registration means 46 registered in 44 is work content probability adjustment means for adjusting work content candidates 44c and their probabilities 44d using the input history 42a recorded in the operation management data 40.
[0042]
  FIG. 4 relates to this embodiment.Commercial vehicleIn-vehicle device for operation management system1Curve monitoring unit36It is a block diagram which shows the structure of these. In FIG. 4, the curve monitoring unit 36 is an angular velocity calculating means for calculating the angular velocity of the vehicle based on the velocity signal (velocity data) and the azimuth signal (azimuth data) from the GPS receiver 13 (see FIG. 3).403Average angular velocity calculating means 408 for calculating an average angular velocity based on a curve angle and a curve time based on the angular velocity from the time when the vehicle enters the curve;Average angular velocity determination means 407 for determining whether or not the average angular velocity calculated by the average angular velocity calculation means 408 exceeds a predetermined average angular velocity threshold set for each vehicle type;A warning signal output means 411 for outputting a warning signal when the calculated average angular velocity exceeds a predetermined average angular velocity threshold;Calculated by the angular velocity calculation means 403An angular velocity determining means 402 for determining whether or not the angular velocity exceeds a predetermined angular velocity threshold; and when the angular velocity determining means 402 determines that the angular velocity exceeds a predetermined angular velocity threshold, the vehicle starts a curve.WatchAnd when the vehicle finishes the curve when it is determined that the angular velocity is equal to or less than the predetermined angular velocity threshold.WatchAnd a curve start / end determination means 410.
[0043]
  The curve monitoring unit 36 includes a curve angle calculation unit 404 that calculates the curve angle by adding the angular velocities from the curve start time when the curve start is determined, and the calculated curve angle is a predetermined angle. When the vehicle is overTravelingDidWatchA curve determination unit 409, a curve approach information acquisition unit 405 for acquiring the curve approach speed and direction at the start of the curve from the speed signal and the direction signal at that time, and a curve advance speed and direction at the end of the curve , Curve advance information acquisition means 406 for acquiring from the speed signal and the direction signal at that time. Each of these means 402 to 411 is connected to the calculation control means 401, and each operation is performed under the control of the calculation control means 401.
[0044]
  Next, with reference to FIGS. 1 to 3, for example, a case where a transportation operation is performed using the vehicle 2 on which the in-vehicle device 1 is mounted will be described.
[0045]
  In the office 3, the server 4 uses the wireless LAN to make the in-vehicle device 1 of the vehicle 2 at least from the position 44a, the work time 44b, the work content candidate 44c and the probability 44d of each work point 12a, 12b. The operation instruction data 44 is transferred. In addition, when the work content in each work point 12a, 12b ... is decided, the probability 44d of this work content is 100%.
[0046]
  When the crew member 6 arrives at each of the work points 12a and 12b, the position associating means 32 compares the data of the position 44a included in the operation instruction data 44 with the position data received from the GPS receiver 13, and the vehicle When the position 2 approaches the position 44a included in the operation instruction data 44, for example, within 100 m, and the speed monitoring means 31 detects that the vehicle speed is, for example, 3 km / h or less, Detect that the input condition is met. That is, the position associating means 32 monitors whether or not the work content input condition is satisfied using the speed and position of the vehicle 2.
[0047]
  Here, since the input condition of the work content includes that the speed of the vehicle 2 is extremely low (for example, 3 km / h or less as a predetermined speed), it is assumed that the crew member 6 operates the in-vehicle device 1. However, it does not interfere with driving. Moreover, even if it is the detection of the vehicle speed using only the GPS receiving part 13 with a speed error of about 2-3 km / h normally, the vehicle-mounted apparatus 1 can be operated reliably.
[0048]
  Further, the position association means 32 refers to the work content candidates 44 c at the respective positions 44 a recorded as the operation instruction data 44, and associates the work content candidates 44 c with the highest probability 44 d from the current position of the vehicle 2 ( Search for. When the probability is 100%, the work content listed in the candidate 44c is confirmed.
[0049]
  Next, the work content confirmation unit 35 inputs / outputs the work content for the crew member 6 in the following procedure, for example. As an example, when the position of the vehicle 2 approaches the work points 12a, 12b... Having a high probability of performing the loading work, the work content confirmation unit 35 uses the voice output unit 14 to confirm the work content with the highest probability. As a message, for example, a voice prompting the crew member 6 to input the work content is issued, such as “Is loading?”. If it is loading, the crew member 6 operates the input terminal 7 to input “loading”. In this case, the work content confirmation unit 35 can confirm that the loading operation is being performed, and can proceed to the next process.
[0050]
  After that, when the work content can be confirmed, the work content confirmation unit 35 displays, for example, “I have input the loading operation” on the display unit 19 via the display unit 19a, and outputs the voice via the voice output unit 14a. Have the part 14 say "I have loaded". The total recording means 34 can register the work content that can be input by the series of work content confirmation operations as the operation management data 40. The total recording means 34 records the relationship between the input work content and the current position as an input history 42a. Further, the work content probability adjusting means 46 adjusts the probability 44d using the relationship between the work content recorded in the input history 42a and the current position, and prepares for the next work content input.
[0051]
  Next, referring to FIG. 4 to FIG.vehicleAn operation (pre-processing related to curve warning) that is characteristic of the operation management system will be described. For example, when the vehicle turns right on the road R from the direction a as shown in FIG. 6 and travels in the direction b, the vehicle takes a trajectory as indicated by a broken line L. Since the vehicle travels according to the locus indicated by the broken line L, the angular velocity of the vehicle changes as indicated by, for example, the line L1 shown in FIG. Since it does not occur, the angular velocity is almost zero or small. When the vehicle turns right along the broken line L as shown in FIG. 6, the turning angle θ (curve angle) increases, and when the vehicle turns, for example, 90 degrees, the curve angle θ becomes π / 2 Here, when the angular velocity is ω [rad / sec] and the time is t [sec], θ = ωt.
[0052]
  Next, a description will be given according to the flowchart shown in FIG. In a state where the vehicle is traveling, the curve monitoring unit 36 included in the processing unit 18 of the in-vehicle device 1 acquires a speed signal and an azimuth signal (azimuth signal based on latitude and longitude) from the GPS receiving unit 13 (step S1). ). Then, the angular velocity calculating means 403 in the curve monitoring unit 36 calculates the angular velocity based on the velocity signal and the azimuth signal (step S2). That is, since the GPS receiving unit 13 receives data from three artificial satellites (not shown) in units of one second, the angular velocity calculating means 403 detects an angular change per second based on the data. Thus, the angular velocity can be obtained.
[0053]
  The calculated angular velocity is input to the angular velocity determining means 402, and it is determined whether or not a predetermined angular velocity threshold value X (a level indicated by a line L2 in FIG. 7) as a trigger angular velocity is exceeded (step S3). For example, if the vehicle is an ordinary vehicle, the angular velocity threshold value X is X = 5. When the angular velocity exceeds the angular velocity threshold value “5”, the curve start / end determining means 410 can determine that the vehicle has started the curve. When it is determined that the vehicle has started a curve, the curve approach information acquisition unit 405 acquires the curve approach speed and direction of the vehicle from the speed signal and direction signal from the GPS receiver 13 at that time (step S4). . Here, the curve approach speed refers to a speed immediately before the vehicle starts a curve.
[0054]
  Then, the vehicle enters a curve, and the angular velocity changes with time as indicated by a line L1 in FIG. The curve angle calculation unit 404 integrates the angular velocities from the curve start time (step S5), that is, integrates the angular velocities that change every moment with time to obtain a curve angle (an angle at which the vehicle is bent) (step S6). . Here, the curve start time point means a time point when the angular velocity changing every moment exceeds the angular velocity threshold value X (line L1 in FIG. 7) as the trigger angular velocity.
[0055]
  Next, the curve determination unit 409 determines whether or not the curve angle is equal to or greater than a predetermined angle (step S7). If the curve angle is equal to or greater than the predetermined angle, the vehicle is curved.Nurse(Step S8) If the curve angle is less than a predetermined angle, the curve isNurseryNo (step S9). In general, even if the road is a straight course, the vehicle travels on a straight course after correcting a certain amount of left / right swaying by a steering wheel operation, so a slight curve angle is generated at this time. Therefore, if the vehicle is less than a predetermined angle,WatchThere is no need to turn the vehicle beyond a certain angleIf you watchIt will be good.
[0056]
  Further, the average angular velocity calculating means 408, which has input the curve angle (the angle during which the vehicle is turning) obtained in the process of step S6 and the curve time, inputs the average based on the curve angle and the time. An angular velocity is calculated (step S12). For example, the change in the curve angle per second becomes the angular velocity, but if the integrated value (curve angle at that time) obtained by integrating this angular velocity with time is divided by the curve time up to that time, that time Average angular velocity can be obtained.
[0057]
  Since the average angular speed at that time also changes in accordance with the change in the curve speed of the vehicle in the curve, it is determined by the average angular speed determining means 407 whether or not the average angular speed at that time exceeds a predetermined average angular speed threshold value Y ( Step S13). For example, even if the vehicle stops due to a signal waiting in the middle of a curve and then travels on a curve, the curve angle based on the angular velocity up to this point and the curve time during travel (excluding the curve time when stopped) Can calculate the average angular velocity.
[0058]
  The average angular velocity threshold Y to be compared with the average angular velocity is set to “13” for a normal vehicle, for example, and if the average angular velocity of the ordinary vehicle exceeds “13”, it is determined as a dangerous curve. That is, when the average angular velocity determination means 407 determines that the average angular velocity exceeds a predetermined average angular velocity Y, it warns the vehicle crew that it is a dangerous curve to turn at the current velocity. The warning signal output means 411 outputs a warning signal for warning a dangerous curve (step S14). The voice output means 14a (see FIG. 3) to which this warning signal is input inputs a voice signal for making a warning voice such as "This curve is dangerous" to the voice output unit 14, thereby The warning output is output from the audio output unit 14.
[0059]
  On the other hand, when the angular velocity determination means 402 determines that the angular velocity is equal to or less than the angular velocity threshold value X (step S3), and the curve start / end determination means 410 has performed curve detection (determination that the vehicle has ended the curve) ( Step S10), when the vehicle has finished curve drivingNurseThen, the curve advance information acquisition means 406 acquires the curve advance speed and direction at that time based on the speed signal and direction signal from the GPS receiver 13 (see FIG. 3) at that time (step S11).
[0060]
  Next, the average angular velocity calculation means 408 calculates the curve angle obtained by integrating the angular velocities from the curve entry time point to the curve advancement time in the curve angle calculation means 404 to the curve time required from the curve entry time point to the curve advancement time point. And the average angular velocity of the vehicle in this curve traveling is calculated (step S12). In this case, the average angular velocity can be obtained from the curve time required from the time when the vehicle enters the curve travel from the straight traveling to the time when the vehicle travels from the curve and exits the curve travel, and the curve angle at which the vehicle is bent. That is, average angular velocity = curve angle ÷ curve time.
[0061]
  Thereafter, the average angular velocity determination means 407 determines whether or not the average angular velocity exceeds the average angular velocity threshold Y (step S13). When the average angular velocity determination means 407 determines that the average angular velocity exceeds a predetermined average angular velocity Y, a warning is issued to warn the vehicle crew that the curve is dangerous to turn at the current speed. The signal output means 411 outputs a warning signal for warning a dangerous curve (step S14). The audio output means 14a to which the warning signal is inputted inputs an audio signal for making a warning voice such as "This curve is dangerous" to the audio output unit 14, and thereby the audio output unit 14 Outputs the warning sound.
[0062]
  Further, if the sign of the angular velocity when the vehicle turns clockwise is positive, and the sign of the angular velocity when the vehicle turns counterclockwise is negative, the sign of the angular speed calculated by the angular speed calculation means 403 and the curve determination means 409 And the number of clockwise curves and the number of counterclockwise curves can be obtained by counting the clockwise curve and the counterclockwise curve, respectively. (Step S15).
[0063]
  The above processing is performed in the curve monitoring unit 36, and the angular velocity, curve angle, curve start time, curve end time, curve entry speed, curve approach speed, curve advance speed, curve advance speed obtained by the curve monitoring unit 36, Data such as azimuth at the time of curve advancement, average angular velocity, number of curves, number of clockwise curves, number of counterclockwise curves, number of warnings related to curves, time and time at which each processing is performed, and so forth are tabulated recording means 34 (see FIG. 3) The collected data is transmitted to the server 4 via the wireless LAN, for example, at the end of one day of operation. In response to this, the server 4 processes the collected data and prints out an evaluation result related to safe driving, for example. Then, the operation manager can effectively give guidance on safe driving regarding a sharp curve or the like by showing the evaluation result to the crew.
[0064]
  As described above, according to the present embodiment, the average angular velocity from the time when the vehicle enters the curve is calculated based on the velocity signal and the direction signal from the GPS receiver 13, and the average angular velocity exceeds a predetermined average angular velocity threshold. Since the vehicle-mounted device 1 having the curve monitoring unit 36 that sometimes outputs a warning signal is provided, it is possible to warn of a dangerous curve for the vehicle, as well as sensors such as an accelerometer and a gyro as in the prior art. There is no need for parts, and construction for attaching such sensor parts to the vehicle is also unnecessary, so that the cost can be reduced, and there are no restrictions on the mounting position and direction of the in-vehicle device 1 in the vehicle. The interior of the vehicle can be used effectively, and the usability for the crew is also improved.
[0065]
  Further, since the angular velocity that is dangerous for a vehicle traveling on a curve differs depending on the vehicle type, it is possible to accurately detect the curve that is dangerous for the vehicle by setting the average angular velocity threshold value for each vehicle type. In addition, for example, when comparing a bus and a passenger car, even if the vehicle turns the same curve, the change in angular velocity is different, so by setting the angular velocity threshold for each vehicle type, the vehicle enters the curve and enters the curve. It is possible to accurately detect the point in time.
[0066]
  If the curve angle is equal to or greater than the predetermined angle, the vehicle is curved.WatchIf the curve angle is less than the predetermined angle, the vehicle is not curvedWatchbe able to. For example, even if the vehicle is traveling on a straight road, a slight curve angle usually occurs.NurseCan be eliminated.
[0067]
  In the above embodiment, the case where the vehicle turns right on the road has been described. However, the present invention is not limited thereto, and the vehicle overtakes the vehicle traveling ahead when the vehicle is traveling on a straight road. In doing so, since the angular velocity changes greatly when the vehicle changes lanes, it goes without saying that a warning can be generated when this angular velocity exceeds a predetermined angular velocity threshold. Thereby, the accident of the vehicle at the time of overtaking can be prevented. The concept of a curve referred to in the present invention includes a curve when the vehicle changes its traveling direction and the angular velocity changes at that time.
[0068]
【The invention's effect】
  As described above, the present inventionCommercial vehicleAccording to the operation management system, when the vehicle enters the curve, the angular velocity changes because the direction of the vehicle changes. In the curve monitoring unit, the average from the time of entering the curve based on the speed signal and the direction signal from the GPS receiving unit. When the angular velocity is calculated and the average angular velocity exceeds a predetermined average angular velocity threshold, a warning signal is output as a dangerous curve for the vehicle. Therefore, it is possible to detect a curve without using a sensor component such as an accelerometer or a gyro as in the prior art, and to warn of a dangerous curve for the vehicle. Therefore, a sensor component such as the accelerometer or a gyro, In addition, the work of attaching such sensor parts to the vehicle is no longer necessary, so that the cost can be reduced, and there are no restrictions on the mounting position and direction of the in-vehicle device in the vehicle, thereby effectively using the interior of the vehicle. This will improve the ease of use in the car for the crew.
[Brief description of the drawings]
FIG. 1 relates to an embodiment of the present invention.Commercial vehicleIt is a block diagram which shows the whole operation management system.
FIG. 2 is a block diagram illustrating a configuration of the in-vehicle device in FIG.
FIG. 3 is a block diagram showing processing contents of a processing unit in FIG. 2;
FIG. 4 relates to an embodiment of the present invention.Commercial vehicleIt is a block diagram which shows the structure of the curve monitoring part with which the vehicle-mounted apparatus of an operation management system is equipped.
FIG. 5 is a flowchart for explaining the operation of the curve monitoring unit.
FIG. 6 is a diagram for explaining a curve angle in the operation of the curve monitoring unit.
FIG. 7 is a diagram for explaining a temporal change in angular velocity in the operation of the curve monitoring unit.
FIG. 8 ConventionalCommercial vehicleIt is a block diagram which shows the whole operation management system.
FIG. 9Commercial vehicleIt is a figure which shows the operation surface of the input terminal of the vehicle-mounted apparatus in an operation management system.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 1 ... Car-mounted apparatus, 2 ... Vehicle, 13 ... GPS receiving part, 36 ... Curve monitoring part, 402 ... Angular velocity determination means, 403 ... Angular velocity calculation means, 404 ... Curve angle calculation means, 405 ... Curve approach information acquisition means, 406 ... Curve advance information acquisition means, 407 ... average angular velocity determination means, 408 ... average angular velocity calculation means, 409 ... curve determination means, 410 ... curve start / end determination means, 411 ... warning signal output means.

Claims (3)

Vehicle speed, a storage unit for recording the operation management data operation instruction data for instructing work content data and running route of the time data and a vehicle showing the work at each point that has been input and vehicle state data including the engine rotational speed An in-vehicle device mounted on the vehicle, and a server for managing each vehicle and recording the entire business operation by totaling operation management data recorded in the storage unit of the in-vehicle device, which is arranged in a place where the transportation business is performed An operation management system for a business vehicle comprising communication means for downloading the operation instruction data from the server to the in-vehicle device and uploading the operation management data from the in-vehicle device to the server. ,
The in-vehicle device is provided with a curve monitoring unit that monitors the vehicle's curve traveling, and the curve monitoring unit calculates an angular velocity of the vehicle based on a velocity signal and a direction signal from the GPS receiver. And an angular velocity determining means for determining whether or not the angular velocity of the vehicle calculated by the angular velocity calculating means exceeds an angular velocity threshold set for each vehicle type, and the angular velocity exceeds the angular velocity threshold by the angular velocity determining means. When it is determined that the vehicle has started curve driving, the time when the vehicle has entered the curve is detected, and when the angular velocity is determined to be equal to or less than the angular velocity threshold, it is considered that the vehicle has ended curve driving. A curve start / end determination means for detecting the time when the vehicle has advanced from the curve, and the angular velocity from the time when the determination means detects that the vehicle has entered the curve. A curve angle calculating means for calculating a curve angle by adding the degrees, a curve determining means for assuming that the vehicle has made a curve when the curve angle calculated by the curve angle calculating means is equal to or greater than a predetermined angle, Average angular velocity calculating means for calculating an average angular velocity based on a curve angle and a curve time based on the angular velocity from the time of entering the curve, and a warning signal when the calculated average angular velocity exceeds an average angular velocity threshold set for each vehicle type Warning signal output means for outputting a signal and means for obtaining the number of curves by counting the curve determined by the curve determination means, the angular velocity, curve angle, average obtained by each means in the curve monitoring unit The data of the angular velocity, the number of curves, and the number of warnings are aggregated and recorded, and the aggregated data is sent from the in-vehicle device to the server via the communication means Operation management system for commercial vehicles, characterized in that it is configured to transmit. 2. The business according to claim 1, wherein the curve monitoring unit includes a curve approach information acquisition unit configured to acquire a curve approach speed and direction at the start of the curve from the speed signal and the direction signal at the time. Vehicle operation management system. The curve monitoring unit, wherein the curve advancing speed and orientation of the curve at the end, to claim 1 or 2, characterized in that it has a curved advancing information obtaining means for obtaining from said orientation signal and said speed signal at that time Management system for commercial vehicles .

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