KR940004919B1 - Data processing method and apparatus for taxi operation - Google Patents

Abstract

The method provides a convenience to users or managers by remote control method, The apparatus includes a meter which processes computed data by mode selection of data detection sensor (SN) and selector (SW), and MCU (MC) which executes an arithmetic process program and saves, outputs data to a bus controller (BC) and an external memory (RM). The bus controller (BC) has a data latch (U3) and address latches (U4,U5) between MCU (MC) and external memory (RM). An input-output unit (I/O) has infra-led diodes (LD1,LD2) and a photo-transistor (PT).

Description

Taxi driving record processing method and device

1 is a block diagram according to a conventional taxi driving recorder.

2 is a block diagram of a taxi driving record processing apparatus of the present invention.

3 is a circuit diagram according to an embodiment of a taxi driving record processing apparatus of the present invention.

4 is a main program flow chart showing a taxi driving record process of the present invention.

5 is a sub-program flow chart showing a taxi driving record process of the present invention.

6 is an addressing flowchart of the present invention.

6A is a Z addressing flowchart.

6b is an X, Y addressing flowchart.

7 is an input / output data timing chart of the present invention.

7A is a timing chart of clock signal SCK.

7B and 7C are timing charts of the input signal SI.

7d is a timing chart of the output signal SO.

* Explanation of symbols for main parts of the drawings

MC: MICRO COMPUTER UNIT

DP: Display SW: Selection

I / O: I / O BC: Bus Controller

RM: External Memory EM: Nonvolatile Memory

MS: Variable change switch LD1, LD2: Infrared diode

LP1-LP2: Display lamp PT: Phototransistor

SN: Sensor U3: EP Data Latch

U4, U5: Address latch U6: Control data latch

The present invention relates to recording and processing taxi operations. In particular, the present invention focuses on enabling the vehicle's driving condition analysis and area analysis, recorded data remote processing, and variable data change using MCU (MICRO COMPUTER UNIT). I put it.

In general, the taxi meter can display the fare display, operating distance, total distance, number of zones, total income, etc., and analyze the driving conditions of the day or sudden stop and operation of the vehicle based on these data. The time records should be processed into data to enable a comprehensive analysis of the driving conditions of the day or precise business analysis of the driver's driving behavior.

As a conventional apparatus for handling the taxi operation state as described above, there was a utility model notification (notification number 88-1586) issued on January 30, 1985, and applied for a patent of 4, 1988, which detects the taxi operation state. There were many problems with the circuitry of processing data, how to store data, and how to record and change data. The circuit problem and method problem in which these problems occur will be described.

In detecting the taxi driving status and processing the data, the first CPU of Metagi itself, which detects the taxi driving status and informs the driver or the user, and the taxi driving status is detected and stored in the memory and notified to the manager (taxi company). It is divided into a unit having a second CPU of the data recording apparatus. Taxi driving status detection is performed by the first CPU, and taxi driving status is detected by the second CPU of the driving recorder. Therefore, since two CPUs have inefficient aspects of performing the same arithmetic processing in parallel, uncertain data may occur. Not only are they stored, but the circuitry is complex, increasing production costs. In the method of storing data, if a specified amount of data is stored, no more data is stored, and new data exceeding the capacity cannot be stored, resulting in recent data loss. Therefore, to enter new data, the data must already be read before the storage capacity is exceeded. Next, when you want to change the variable data, that is, when the taxi fare is changed, for example, only one economic unit (regional unit divided into national or city, provincial taxi fare hour, distance system, etc.) is uniform. Since all taxi fare changes are made at this time, it is necessary to change and record the data. In the case of the previous taxi meta machine, if you want to record data change, separate the variable storage memory from the board in the main body of the machine and use a separate device for nonvolatile The data change recording was very difficult and time consuming because the data had to be written to memory or program ROM and then connected to the circuit board again.

Therefore, in order to solve the above problems, the present invention detects a taxi driving state by using a single MCU, and generates and processes a program to store memory data at the same time as arithmetic processing, and stores data through a data bus controller. After storing as much as possible, the oldest data is erased and new data is stored in place so that the latest data can always be stored.

In addition, when data change recording is performed, the data input through the input unit, directly or remotely, can be recorded in the nonvolatile memory. It also aims to output data to the I / O unit when driving record is controlled as MCU to record and output to memory.

The present invention having the above object controls the MCU as a control signal selected by the selection unit, which is a sensor unit for detecting a driving state, a display unit for displaying each driving state and time, and a nonvolatile recording the variable data. An external memory unit for recording data by a memory and a data bus control, and an input / output unit for outputting a recorded signal and inputting a change signal at the same time will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the MCU MC executing an embedded program according to a signal selected by each mode selection unit SW of a matrix switch executes a program and detects a signal of a sensor unit SN detecting a driving state. Input to MCU (MC) to display on display (DP) or save to external memory (RM) .If variable data is changed by input / output (I / O), change data to non-volatile memory (EM) and save. If you want to output the stored data is configured to output to the input / output unit (I / O) via the data bus controller (BC) and MCU (MC) stored in the external memory (RM).

Figure 3 is a detailed circuit diagram of an embodiment according to the block of the taxi driving record processing apparatus of the present invention, MCU (MICRO COMPUTER UNIT) has a built-in operation RAM and program ROM to be described below, which is divided, premium, empty car, All selection switches for driving and standby (payment) are operated according to the mode selected by the selection unit (SW) composed of a matrix, and a direct line can be used for input / output, and input / output as a remote device is possible. It has an input / output unit (I / O) connecting the infrared diodes LD1 and LD2 to the photo transistor PT and a printer PRT to read data directly. The sensor unit SN for detecting a taxi driving state and the lamps LP1, LP2, LP3, and LP4 for displaying each selection mode (empty car, driving, surcharge, waiting) of the selection unit SW are connected. And 16-bit address latches (U4, U5), 4-bit control data latches (U6), 8-bit input data latches (U3), and data selector (U7) for reading or storing taxi driving data. Data bus controller (BC) is configured and connected to external memory (RM) to control data bus controller (BC) according to program of MCU (MC) to read or write data stored in external memory (RM) )do. In addition, the non-volatile memory (EM) is connected to the memory (EM) by turning on the variable change switch (MS) when the fee is changed and each variable is changed by the built-in program of the MCU (MC). By applying to (I / O), data changes can be directly made to the nonvolatile memory (EM).

In addition, the display DP displays a taxi driving state, a date, and a time according to each mode.

The operation program of the present invention as described above will be described according to the main program of FIG. 4 and the addressing program of FIG. First, the main program of FIG. 4 sets each variable and the circuit state used in the program to the free-difference mode when the power is supplied to the circuit and the operation is performed (step 1). If the mode is selected, the division number is increased by one, and if the previous division number is the last one, the division number starts again from "1". (Step 2) Confirm the selection key of the selection unit (Step 3), and then press the key. If is changed, the key change state and the number of times are stored in the external memory RM (step 4). Then, the selection mode is performed (step 5). In the driving selection mode, the basic driving fare variable data is stored in the fare multiplication buffer and set as the state for driving base distance and fare multiplication. If the previous state was payment or premium, the data of the fare multiplication buffer is maintained as it is. The calculation mode is changed to calculate the variable and the distance after driving (step 5-1). In the case of the premium selection mode, the premium base rate variable data is stored in the charge accumulation buffer and set as the state for the premium base distance and the charge accumulation.If the previous state was payment or driving, the data in the charge accumulation buffer is kept as it is. Then, the calculation mode is changed to calculate the fare variable and the distance after the premium (step 5-2). In the payment (standby) selection mode, there is a time distance divider and a distance system operation, which is set by the installer according to the local situation. The charge multiplication is stopped and the mode is changed to a mode in which charges are added only by distance. In addition, when the payment selection mode is selected in the state set to the distance system operation, the charge integration according to the distance is stopped and another charge is added to the waiting time (step 5-3). In the vacant vehicle selection mode, the accumulated fare and distance are summed in the driving surcharge or payment (waiting) state, and the operation according to the fare is not performed after setting the vacant vehicle mode. At this time, the accumulated riding distance in the driving surcharge or payment (waiting) mode is stored in the external memory RM and initialized to the empty vehicle state (step 5-4). In the deceleration change mode, adjust the deceleration variable by changing the displayed number using the drive and pay switch. Alternatively, the deceleration change can be made from an external device using the serial data input, and once the change operation is completed, the changed data is stored in the nonvolatile memory (EM) (step 5-5). After performing according to the selection mode as described above, step 6 is performed, which generates the data necessary for the clock and the date every second during the main program processing and integrates the sensor part SN accumulated every second by the sub-program (FIG. 5). The number of pulses is sampled and stored in the external memory (RM), which can be used as the speed change status data, and when the speed change status is detected, the time at that time is also stored in the external memory (RM) and pulses per second sampled for a certain variable time. By comparing the numbers with each other, the highest value and the average value are sampled at constant variable time intervals and stored in the external memory RM for use as speed change data (step 6). The accumulated charge, distance, time, date, and the like are code-converted so as to be outputted to the display unit DP by the operation of the circuit and stored in the internal display memory RAM of the MCU MC (step 7). When a data input / output command is input from an external device through serial input, it is determined whether to output the data currently held or input variable data from the outside to change each internal variable (step 8). When data is output, the content to be output and the amount of data to be output are determined by the command of the external device, and are repeatedly outputted one by one (Step 9). In case of variable data input, the variable change switch (MS) is in the enable position (on state), and the variable data input from the external device is changed using the serial input, and the changed data is stored in the nonvolatile memory (EM) to supply power. This data is not destroyed even when it is interrupted (step 10).

The following is a fare and distance calculation sub-program. If an interrupt or an interrupt by the speed limit timer is generated by the driving sensor during execution of the main program, the sub-program is executed and the main program is executed again. Therefore, when the pulse of the sensor unit SN is input, the number of pulses per second is integrated, the distance per pulse is calculated, and the driving distance is calculated. Add and calculate the number of charges. That is, when a pulse of distance is applied from the sensor unit SN, an interrupt signal is generated to stop execution of the main program, and when the driving distance and the time interval of the pulses sampled per second are earlier than the time proportional to the limit speed, Continue. If the selection state of the selection unit (SW) is not in the vacant vehicle mode (ride state), the ride distance is integrated to perform the calculation required to add the fare. Charges are added, stored in the charge display buffer, and the number of additions is stored in the external memory RM so that the charge can be calculated by the external device (step 13). When selecting the riding mode (driving or surcharge), if it is in the case of a divider and not in the payment (standby) mode, the speed limit timer starts to operate and an interrupt signal is generated after a certain time has elapsed. In this case, the sensing pulse rate of the sensor unit SN is measured, and if it is less than the limit speed, the above-described step 13 calculation is executed.

In addition, Z addressing program (Fig. 6A) and pulse number per second to perform key change state and number of times and ride distance storage, speed change time storage, peak value storage and reading display storage of the main program of FIG. The operation of the X and Y addressing subprogram (Fig. 6B) in parallel with the circuit of the embodiment of the present invention in Fig. 3 will be described.

After storing each necessary data, the next address selection method is divided into the area where the storage address can be variably designated by the area X and Y variables of the external memory (RM) and the area where the storage address can be variably designated by the Z variable. .

The area designated by X and Y is connected with as many as Y addresses, so if you store data at the place designated by X and Y, if you increase only one Y variable, Y variable is 0. 1. 2. 3.… N1. N. 0. 1. 2... As shown in the figure below, when the memory capacity is filled up to N, the first data is destroyed and the latest data is stored.

When reading, the data is read in reverse form from the latest data, and thus the latest data from the present to the past can be read at all times.

In this way, if the number of pulse data sampled is stored every second and the speed change state is detected, the time is stored at the location designated by Z, and if the X variable is increased by one, the speed change data as much as Y variable is changed. It stays on the line you specified before, and X specifies the next line.

Like the Y variable, the X variable is also reduced, so the old rows are automatically destroyed and only the most recent data is preserved by X rows.

In this method, the Z variable is also designated as a reduced type, and records and stores the latest data by the Z variable.

At this time, the area designated by X and Y is used as a storage place for the speed change data, and other various data (speed, key change state, etc.) are set to be recorded and stored in the area designated by Z.

The controller's control program stores data and reads data through the bus controller. The control program consists of a read / write (W / WRITE) standby program, a data transfer program and a read or write end program. The command to store or read data in the external memory (RM) is latched to the control data latch (U6), and the data transfer unit sequentially outputs the data and address contents in six steps of 4 bits each to the data latch (U3) and the like. Latch to address latches U4 and U5.

However, when reading, the output of the data contents from the MCU MC to the data latch U3 is omitted.

The read or finish section outputs a write or read command to the control data latch U6, and in the case of a read command, the data D0-D7 input to the data selector U7 by the control signal X6. D3) 4 bits or 4 bits of terminal (D4-D7) are selectively read.

This will be described in more detail as follows.

The data storage operation outputs a write ready command signal " 111 " (optionally settable) to the terminals X0-X3, and latches and stores it in the control data latch U6 in accordance with the synchronous control signal of the terminal X6. 16-bit data specifying the data to be stored and the address of the terminal are synchronized with the signal of terminal X4 and outputted continuously to the terminals X0-X3 in six steps of four bits. The data latches U3 and address latches U6 and U5 Latch on the

Therefore, 24 terminal lines are controlled by using the 4-bit data terminal, and the write completion command signal "0" is outputted to the terminals X0-X3 and the control latch signal of the terminal U6 is applied to the data latch U6. The write operation is completed by latching.

The data read operation outputs the command signal " 110 " (arbitrary setting function) to the terminals X0-X3 and latches it to the control data latch U6 by the synchronous control signal of the terminal X6. The 16-bit data designating address is synchronized with the signal of the terminal X4 and outputted in 4 steps in succession to the terminals X0-X3 in four steps. The latched signal is latched to the address latches U4 and U5. Is applied to the addresses A0-A15 of the RM.

When the read command signal "1100" is output to the terminals X0-X3 and latched to the control data latch U6 by the terminal X6 signal, the data of the memory RM is output to the terminals D0-D7 to select data. It is input to the input terminals A0-A3 and B0-B3 of the circuit U7 and the output of the data selection circuit U7 is permitted by the terminal X5 of the read signal, and the synchronization signal of the terminal X6 is allowed. The data signal applied to the selection circuit U7 is inputted through the terminals A0-A3 or B0-B3 selectively through the terminals X0-X3, so that a read operation is performed.

In addition, the process of remotely inputting / outputting driving data data or inputting radius storage will be described.

Instead of connecting the signal line directly to the input / output unit (I / O) of FIG. 3, a connection device that can be connected to a separate computer is used to input and output data, and the clock signal SCK of the computer unit MC emits infrared light. The synchronous clock signal is transmitted to the remote device as shown in FIG. 7a through the diode LD1, and the command data signal is read from the signal SI connected to the phototransistor PT. The command data signal is transmitted to the phototransistor PT. It receives a signal transmitted from a separate remote device to be transmitted and reads it as command data signal.

According to the command data signal, the data stored in the external memory RM is output or the data stored in the nonvolatile memory EM is changed and stored, which is changed as shown in FIG. 7 if the initial command data signal is "10". In this case, it is assumed that the initial command data signal "1" is set to output data.

When the command data signal is applied to the signal SI through the phototransistor PT as " 1010011 " as shown in FIG. 7B, the initial " 10 " signal is read out and stored as the next signal " 10011 " The change data is stored in EM).

However, when the command data signal is initially applied to the signal SI through the phototransistor PT as a "1" signal as shown in FIG. 7c, it reads that the command data signal is a data output command and infra-red through the data output signal SO. As the light emitting diode LD2, the signal can be read from the remote device by the data signal of the memory RM.

At this time, if the data of the memory RM is "11011" as shown in FIG. 7d, the data "11011" is read by the remote device via the light emitting diode LD2, which is also read according to the synchronous clock signal SKC. The data recorded in the memory RM is output to the remote device by the command data input from the remote device, or the data stored in the nonvolatile memory EM is changed and stored by the data commanded from the remote device.

As described above, the present invention stores and reads data in a reduced form so that the latest data is always stored as much as the installed capacity of the memory RM, and does not require a separate storage device for arithmetic and data storage. In addition, since the taxi driving status data can be stored and read by a program embedded in a single MCU, the circuit is very simple and the production cost can be produced at a low price.

Moreover, data change is very convenient because the data can be changed and saved by the program embedded in the MCU without separate change or exchange of variable storage memory or program memory when fee revision or each variable data needs to be input.

In addition, it is useful to provide maximum convenience to users or administrators by enabling remote I / O when data is output or change input.

Claims (8)

Taxi consisting of a meta data processing data calculated by each mode selection of the data sensing sensor unit SN and the selection unit SW, and a data recording device for storing and outputting data from the sensor unit SN. In the driving record apparatus, the operation processing program is executed in the MCU MC by the selection mode of the sensing sensor SN and the selection SW, while the bus controller BC and the external memory RM are connected to the MCU MC. Taxi driving record processing device characterized in that the data to be stored and output to the same MCU (MC) by connecting. The data bus of claim 1, wherein a data latch U3, an address latch U4 and U5, a control data latch U6, and a data selector U7 are formed between the MCU MC and the external memory RM. Taxi driving record processing apparatus comprising a controller (BC) to store data or to read. The variable change data according to claim 1, wherein a nonvolatile memory EM is connected to the MCU MC, and the variable change data applied by the control of the input unit I / O or the selection unit SW as its own program of the MCU MC. Taxi driving record processing device, characterized in that configured to store. The taxi driving record process according to claim 1 or 3, characterized in that the input / output unit (I / O) is equipped with infrared diodes (LD1, LD2) and phototransistor (PT) to remotely input and output data. Device. In the taxi driving record processing method which performs the selection mode after confirming the key state change of the taxi meter and stores the operation status and the detected data, the variable data input from the external device when the variable data should be input. Taxi driving record processing method characterized in that to be stored in the nonvolatile memory (EM). A taxi driving record processing method in which a data of a taxi meter can be stored and read out in a memory, and the data to be stored or the address designation data can be continuously output to increase or decrease the memory capacity with only a limited number of terminals. 6. The method according to claim 5, wherein the sampled pulse number data is stored every second, and when the speed sudden state is detected, the time is stored at a location designated by Z, and if the X variable is increased by one, the speed sudden data as much as Y variable is obtained. It is stored in the designated row before being changed, X is designated as the next row, and X variable is also designated as reducing type like X variable so that the past row is automatically destroyed and only the latest data is preserved by X rows. Record processing method. The taxi driving record processing method according to claim 7, wherein the Z variable is designated as a reduced type so that only the latest data can be recorded and stored at all times.