JPS6132881B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle traveling information reproducing device for reproducing the recorded contents of a recording device that records vehicle traveling information such as vehicle speed, mileage, operation of on-board devices, and driving operations of crew members. It is.

Speed information and distance information are obtained using a speed generator driven by the wheels of the vehicle, and each time the distance information increases by a certain value, various driving information of the vehicle, such as speed, operating status of the main equipment of the vehicle, and information on various equipment of the crew, is obtained. 2. Description of the Related Art It is widely used to record operating conditions and the like using a recording device, and to reproduce the recorded contents as needed to investigate the driving conditions of a vehicle.

Conventional recording devices receive speed information from a speed generator that is attached to a vehicle and detects the speed of the vehicle, but this speed information currently comes in a variety of different forms. For example, as is well known, the diameter of vehicle wheels varies widely depending on the vehicle model, and there are many types, from locomotives over 1m to general trains less than 1m. However, due to aging and wear, for example, the diameter of a general railway vehicle changes by a maximum of 100 mm. In addition, it also differs depending on the type of speed generator installed on the vehicle and how it is installed, for example, whether it is driven directly by the wheels or whether it is driven by increasing/decelerating through a gear mechanism or the like.

In this way, the amount of speed information per unit traveling distance of a vehicle (specifically, the number of speed pulses or frequency per unit time) can vary depending on the vehicle type, wheel wear, speed generator type and installation method, etc. Since the wheel diameter changes, many types of recording devices are required to correspond to this, and it is also necessary to provide a complicated correction device to constantly perform corrections in response to changes in wheel diameter, etc.

However, generally speaking, it requires a lot of effort and expense to install such a correction device in many vehicles and to adjust the correction device according to changes in the wheel diameter. Furthermore, if the specified wheel diameter or the type of speed generator differs, a separate type of recording device must be provided accordingly, resulting in a significant increase in the number of types of recording devices.

On the other hand, it is not often that the recorded contents of a recording device are reproduced. This is because such an opportunity is limited to when an accident or the like occurs in a vehicle and the driving situation of the vehicle at that time is investigated. Therefore, if the recording device mounted on the vehicle does not have a correction device for correcting the wheel diameter, and the playback device is equipped with this function, the mechanism of the large number of recording devices on the vehicle can be simplified. This is very desirable in terms of standardization, reduction of labor for correction for wheel diameter differences, etc. Of course, when reproducing recorded content using a reproducing device, it is necessary to set conditions such as the specified wheel diameter and the wear condition of the wheels, so the reproducing device must be equipped with a function for this purpose. It is inevitable that the configuration of the playback device itself becomes complicated. However, common sense suggests that there are not many opportunities to use playback devices as mentioned above, so the number of playback devices can be considered to be extremely small compared to the number of recording devices, and they are installed in many vehicles. If you combine the advantages such as the fact that the mechanism of the recording device has been greatly simplified and the labor involved in wheel diameter correction being eliminated, and the disadvantage that the configuration of the few playback devices is complicated, it is clear that the recording device There is an advantage to simplifying.

However, until now, there has been no example of a recording device and a playback device that have been made with sufficient consistency from this point of view, and the recording device itself has a mechanism for correcting the wheel diameter. Most of them had diameter correction. The concept of correcting the wheel diameter using a regenerator has not existed in the past. Furthermore, when reproducing vehicle running information recorded by a recording device without a wheel diameter correction mechanism, the actual situation is that the reproduced information is once reproduced without correction, and then the reproduced information is manually corrected.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle travel information reproducing device that can solve the above-mentioned problems and improve compatibility with a recording device.

In order to achieve this object, the present invention includes a wheel diameter setting section that sets a specified wheel diameter of the vehicle, a correction value setting section that sets a correction value for correcting a change in wheel diameter, and a wheel diameter setting section that sets a correction value for correcting a change in wheel diameter. a logic section that converts the recorded speed information into a speed corresponding to the traveling distance while calculating a correction for a change in wheel diameter based on the specified wheel diameter and correction value set by the section and the correction value setting section; The present invention is characterized in that the setting of the specified wheel diameter and the correction for changes in the wheel diameter are all carried out on the playback device side.

Furthermore, if the playback device of the present invention is used, not only will there be no need for a wheel diameter correction mechanism for the on-vehicle recording device, but the recording device itself, which differs depending on the vehicle model, will be unified to the same one. There are even benefits if you can do it.

Before describing one embodiment of the present invention, an on-vehicle recording device for recording vehicle running information to be reproduced by the reproducing device of the present invention will first be described. FIG. 1 shows a block diagram of a recording device. The input terminal 1 receives a speed pulse from a speed generator driven by the wheels, and the input terminal 2 receives various types of travel information. As this driving information, various kinds of received information, the status of the brake system, the status of brake operation, equipment failure, and the operation status of switches by the crew members are inputted, for example. Distance counter 3 integrates speed pulses,
Every time the cumulative number of pulses increases by a certain value, an address signal is output to the first non-volatile generation memory 4 or the second
The addresses of the non-volatile generation memory 5 are sequentially specified starting from address 1. The nonvolatile memories 4 and 5 are nonvolatile random access read/write memories, and their memory cells are composed of a volatile P-MOS RAM and a nonvolatile MOS ROM. Assuming that the first non-volatile memory 4 is selected by the memory selection circuit 6, when the address signal is input from the distance counter 3 to the first non-volatile memory 4, the cumulative number of pulses of the distance counter 3 at that time, The speed pulse frequency counted by the speed counter 7 and various traveling information inputted from the input terminal 2 are stored in the RAM of the volatile area P-MOS at address 1 of the first nonvolatile memory 4. Thereafter, each time an address signal is output from the distance counter 3, it is sequentially stored in the RAM of the volatile area P-MOS starting from address 2 of the first nonvolatile memory 4. When the final address is memorized, it returns to address 1 again.
Memory is updated. Both new and old stored data are stored in the nonvolatile memories 4 and 5.

When the traveling information inputted from the input terminal 2 matches the recording conditions, the recording condition detection circuit 8 detects this and operates the recording command circuit 9. As a recording condition, for example, after receiving the ATS emergency brake signal or manual emergency brake signal, the train speed is 5 km/h.
When the following conditions occur, when the power is turned off without the above processing being performed, when the failure reset push button is pressed down, etc. When a recording command is input to the first non-volatile memory 4, the volatile area P-MOS is
Data stored in RAM is stored in the non-volatile area MOS
The data is transferred to the ROM and the memory is retained. Also,
In response to the recording command, the memory selection circuit 6 switches from the first nonvolatile memory 4 to the second nonvolatile memory 5, and subsequent data is stored in the second nonvolatile memory 5. As a result, memory retention in the event of an abnormality can be performed twice. Next, an embodiment of the present invention will be described in which the recorded contents of a recording device having no wheel diameter correction mechanism as shown in FIG. 1 are reproduced.

FIG. 2 shows a block diagram of the playback device. An input terminal 11 is connected to an output terminal 10 of the recording device, and data in the nonvolatile memories 4 and 5 in the recording device is read out by a logic section 13 via an input/output section 12. The wheel diameter setting section 14 consists of five wheel diameter setting switches _S1 to _S5 , each corresponding to five types of prescribed wheel diameters depending on the type of vehicle. The five specified wheel diameters are already stored at predetermined addresses in the nonvolatile memories 4 and 5 before use. The memory switching unit 15 includes a first memory switching switch S6 that switches to playback of data in the first nonvolatile memory 4, and a second memory switch _S6 that switches to playback of data in the second nonvolatile memory 5.
It consists of a memory selector switch _S7 . The correction value setting unit 16 sets the change in wheel diameter with respect to the specified wheel diameter as a correction value.The actual wheel diameter is measured, the measured value is subtracted from the specified wheel diameter to calculate the change, and this is corrected. Set as value. logic part 1
3 calculates the correction factor α (=actual wheel diameter ÷ specified wheel diameter) from the correction value and the specified wheel diameter, and then calculates the recorded cumulative pulse number S and speed pulse frequency from the pre-programmed formula below. L and speed V
Convert to .

L=πDαS/P [m] (1) V=3.6πDαf/P [Km/h] (2) However, D is the specified wheel diameter [m], α is the correction factor, and P
is the number of poles of the speed generator. In addition, when the speed generator is driven via a gear mechanism, multiply the rotation ratio of the gear by the denominator of equations (1) and (2).

In addition to the read traveling information, the calculated distance and speed, the logic unit 13 displays the address, new/old data, and whether the data is in the memory 4 or 5 on the panel display unit 17, and prints out the information on the printer 18 as necessary.

An example of print record data is shown in FIG. 1st~
The 4th digit is the distance, the 2nd to 7th digits are the speed, the 8th digit is the reception information (part 1), the 9th digit is the reception information (part 2), and the 10th digit is the reception information (part 1).
The digit is the pattern speed, the 11th digit is the manual brake operation status, the 12th digit is the ATS brake, the 13th digit is the brake system status, the 14th digit is equipment failure, the 15th digit is the switch operation status by the crew, 16 digits are allocated to new and old data.

The correction value set in the correction value setting section 16 may be a measured value of the actual wheel diameter instead of the change in the wheel diameter. In this case, the arithmetic expression programmed into the logic section 13 is changed. Either one of the nonvolatile memories 4 and 5 may be used. A volatile memory with an auxiliary power supply circuit can be used instead of the nonvolatile memories 4 and 5. In this case, the recording condition detection circuit 8 and the recording command generation circuit 9 are unnecessary. Furthermore, the memory is not limited to IC memory, and magnetic tapes, magnetic disks, and the like can be used.

In the illustrated embodiment, distance information is recorded, but instead of recording distance information, speed information and other traveling information may be recorded at regular intervals. In this case, if distance information is required, velocity information is obtained by integrating it over time. The apparatus can be simplified by performing this not in the recording device but in the reproducing device. Speed information is not limited to digital quantities called speed pulses;
It may be an analog quantity expressed in the form of voltage or current. In this case as well, distance information is obtained by integrating velocity information over time.

As described above, according to the present invention, the wheel diameter setting section sets the specified vehicle wheel diameter of the vehicle, the correction value setting section sets a correction value for correcting a change in the wheel diameter, and the wheel diameter setting section sets a correction value for correcting a change in the wheel diameter. Logic that converts the recorded speed information into a speed corresponding to the travel distance while calculating corrections for changes in wheel diameter based on the specified wheel diameter and correction value set by the diameter setting section and correction value setting section. Since the setting of the specified wheel diameter and the correction for changes in wheel diameter are all carried out on the playback device side, the speed information recorded by the recording device that does not have a wheel diameter correction mechanism can be accurately reproduced. It is possible to play back the data, and it is possible to improve the compatibility with the recording device. In addition, along with this, it becomes possible to downsize and standardize recording devices, which are larger in number than playback devices, and to reduce maintenance labor, which has a large economic effect.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a recording apparatus according to an embodiment of the present invention, FIG. 2 is a block diagram of a reproducing apparatus, and FIG. 3 is a diagram showing an example of print recording data. 1, 2...Input terminal, 4, 5...Nonvolatile memory, 7...Speed counter, 10...Output terminal, 1
1...Input terminal, 13...Logic section, 14...Wheel diameter setting section, 16...Correction value setting section, _S1 to _S5 ...Specified wheel diameter setting switch.

Claims (1)

[Claims] 1. In a vehicle running information reproducing device that reproduces the recorded contents of a recording device that records vehicle running information including speed information proportional to the number of wheel rotations of the vehicle, a wheel diameter setting section that sets a specified vehicle diameter of the vehicle; a correction value setting section that sets a correction value for correcting a change in diameter, and the recorded speed information based on the specified wheel diameter and correction value set by the wheel diameter setting section and the correction value setting section. A vehicle travel information reproducing device comprising: a logic unit that calculates a correction for a change in wheel diameter and converts the speed into a speed corresponding to a travel distance.