Display system, saddled-type vehicle, speed meter, mobile terminal, and program

Abstract

To provide a display system, a saddled-type vehicle, a speed meter, a mobile terminal, and a program with which it is possible to further improve the comfort of visual recognition of a meter by a user and further reduce burdens.SOLUTION: A display system 10 comprises: a display unit 16 for displaying the speed V of a vehicle 1; and a processing unit 17 for setting a display update period T of the display unit 16 in accordance with the speed V. The processing unit 17 changes the display update period T to an increasing trend when the speed V is greater than or equal to a high-side speed threshold VH when the vehicle 1 accelerates, and changes the display update period T to a declining trend when the speed V is lower than or equal to a low-side speed threshold VL when the vehicle 1 decelerates. The processing unit 17 causes a period change width to be changed to a decreasing trend when accelerating and causes the period change width to be changed to an increasing trend when decelerating.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a display system, a saddle-type vehicle, a speedometer, a mobile terminal, and a program. [Background technology]

[0002] Conventionally, for example, a meter device that updates a display in accordance with the speed of a moving object is known (for example, see Patent Document 1). This meter device updates the display with high responsiveness when the speed of the moving object is slow, and updates the display with low responsiveness when the speed of the moving object is fast. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-14647 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional meter device, the correspondence between speed and display responsiveness is set to be the same when the moving object is accelerating and when it is decelerating, so there was room for improvement in terms of the fine changes in responsiveness when traveling at a speed close to the threshold value at which the responsiveness is changed.

[0005] An object of the present invention is to provide a display system, a saddle-type vehicle, a speedometer, a portable terminal, and a program that can improve the comfort of a user's viewing of a meter and further reduce the burden on the user. [Means for solving the problem]

[0006] In order to solve the above problems and achieve the above object, the present invention employs the following aspects. A display system (10, 30) according to one embodiment of the present invention includes a display unit (16, 22) that displays the speed of a moving body (1), and a control unit (17, 24) that sets the display update period of the display unit in accordance with the speed, and the control unit changes the display update period when the speed is equal to or greater than a first speed threshold when the moving body is accelerating, and changes the display update period when the speed is equal to or less than a second speed threshold different from the first speed threshold when the moving body is decelerating.

[0007] In the display system described above, the control unit may set the first speed threshold relatively greater than the second speed threshold, and change the display update period from the first period to the second period when the speed is greater than or equal to the first speed threshold, and change the display update period from the second period to the first period when the speed is less than or equal to the second speed threshold.

[0008] In the display system described above, the control unit may change the display update period when the moving body accelerates so that the periodic change width tends to decrease, and when the moving body decelerates, change the display update period when the periodic change width tends to increase.

[0009] A saddle-type vehicle (1) according to one embodiment of the present invention includes a display system (10) described in any one of the above, and a detection unit (12) that detects a state quantity related to the speed, and the control unit acquires the speed based on a detection signal output from the detection unit.

[0010] A speedometer according to one aspect of the present invention includes any one of the display systems (10) described above, and the display system is mounted on the moving body.

[0011] A mobile terminal according to one aspect of the present invention includes any one of the display systems (20) described above and a communication unit (23) that communicates with the mobile body.

[0012] A program according to one aspect of the present invention is a program executed by a computer that controls a display unit (16, 22) that displays the speed of a moving object (1), the program comprising: The device executes the steps of: setting a display update period of the display unit in accordance with the speed; changing the display update period when the speed is equal to or greater than a first speed threshold when the moving body is accelerating; and changing the display update period when the speed is equal to or less than a second speed threshold different from the first speed threshold when the moving body is decelerating. Effect of the Invention

[0013] According to the above, by setting a first speed threshold during acceleration and a second speed threshold during deceleration in order to change the display update period according to the speed of the moving body, the period during which the display update period is maintained unchanged can be substantially extended compared to the case where only a single speed threshold is set, for example. This makes it possible to prevent the display update period from being frequently changed according to the speed, thereby further improving the comfort of the user's meter viewing and further reducing the burden.

[0014] In the above case, by setting the first speed threshold relatively larger than the second speed threshold, the period during which the display update period is maintained at the first period or the second period can be substantially extended, and frequent changes of the display update period depending on the speed can be prevented.

[0015] In the above case, by changing the periodic change width to a decreasing trend during acceleration and changing the periodic change width to an increasing trend during deceleration, the comfort of the user's viewing of the meter in accordance with changes in speed can be further improved and the burden on the user can be further reduced.

[0016] According to the above-mentioned saddle-type vehicle or speedometer, the period during which the display update cycle is maintained unchanged can be substantially extended, and the discomfort felt by the user from visual information and the increase in the visual burden can be suppressed. For example, the convenience and comfort of the speed display can be improved without depending on an appropriate device carried by the user.

[0017] According to the above mobile terminal, the period during which the display update cycle is maintained unchanged can be substantially extended, and the discomfort and visual burden felt by the user from the visual information can be suppressed from increasing. For example, compared to the case where various processes are performed by an appropriate device mounted on the mobile body, the need to increase the processing capacity of the device mounted on the mobile body can be suppressed. For example, the versatility and comfort of the speed display can be improved without depending on an appropriate device mounted on the mobile body. [Brief description of the drawings]

[0018] [Figure 1] 1 is a configuration diagram of a display system mounted on a vehicle according to an embodiment of the present invention. [Diagram 2] 5 is a graph showing an example of the correspondence relationship between the speed and the display update period when the vehicle is accelerating and decelerating in the display system according to the embodiment of the present invention. FIG. [Diagram 3] FIG. 4 is a graph showing an example of the correspondence relationship between the vehicle speed and the display update period in the display system according to the embodiment of the present invention. [Figure 4] 4 is a flowchart showing the operation of the display system according to the embodiment of the present invention. [Diagram 5] FIG. 13 is a configuration diagram of a display system according to a modified example of the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A display system according to an embodiment of the present invention will now be described with reference to the accompanying drawings. FIG. 1 is a configuration diagram of a display system 10 mounted on a vehicle 1 in an embodiment. As shown in Fig. 1, a display system 10 according to the embodiment is mounted on a vehicle 1. The vehicle 1 is a saddle-ride type vehicle, for example, a motorcycle. The vehicle 1 includes, for example, front wheels FW which are steered wheels, rear wheels RW which are driven wheels, and a vehicle body frame 2. The front wheel FW is supported by a pair of left and right front forks 3 and is steered by a bar handle 4. The pair of front forks 3 and the bar handle 4 are supported by a head pipe (not shown) of the body frame 2 so as to be steerable. The rear wheel RW is connected to a power unit (not shown) that transmits power, and is supported by a swing arm 5. For example, the swing arm 5 is supported by the vehicle body frame 2 via a link (not shown) and a cushion (not shown) by a so-called link-type suspension. The vehicle 1 includes, for example, a front cowl 7 at the front of the body cover 6, and a windscreen 8 provided at the upper center of the front cowl 7.

[0020] The display system 10 mounted on the vehicle 1 includes, for example, an operation unit 11, a rotation sensor 12, an accelerator position sensor 13, a front brake sensor 14, a rear brake sensor 15, a display unit 16, and a processing unit 17. For example, the operation unit 11, the display unit 16, and the processing unit 17 constitute a display unit 10a. The display unit 10a constitutes, for example, at least a part of a speedometer or the like. The display unit 10a is disposed, for example, in front of the handlebar 4, and is covered from the front and above by the front cowl 7 and the windscreen 8. Note that the operation unit 11 of the display unit 10a may be disposed in a location different from the display unit 16, for example, on the handlebar 4.

[0021] The operation unit 11 includes, for example, an input device that is a user interface. The input device is, for example, a button or a touch panel that accepts an input operation by an operator's finger. The operation unit 11 outputs an operation signal according to the input operation by the operator. The rotation sensor 12 is, for example, a wheel speed sensor provided on the steered wheels (front wheels FW) or a rotation speed sensor provided on the power unit, and detects a state quantity related to the speed V of the vehicle 1 and outputs a detection signal of the state quantity related to the speed V.

[0022] The accelerator position sensor 13 is, for example, a magnetic sensor using a non-contact type Hall element, etc. The accelerator position sensor 13 detects an accelerator operation, which is, for example, an accelerator position that changes in response to an operation of a throttle grip (not shown) by the driver of the vehicle 1, and outputs a detection signal of the accelerator operation. Each of the front brake sensor 14 and the rear brake sensor 15 is, for example, a hydraulic pressure sensor or a stroke sensor. The front brake sensor 14 detects a brake operation, such as an operation of a brake lever (not shown) by the driver of the vehicle 1 or hydraulic pressure resulting from the operation of the brake lever, and outputs a detection signal of the brake operation. The rear brake sensor 15 detects a brake operation, such as an operation of a brake pedal (not shown) by the driver of the vehicle 1 or hydraulic pressure resulting from the operation of the brake pedal, and outputs a detection signal of the brake operation.

[0023] The display unit 16 is, for example, a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display. The processing unit 17 is, for example, a software function unit that functions when a processor such as a CPU (Central Processing Unit) executes a predetermined program. The software function unit is an ECU (Electronic Control Unit) that includes a processor such as a CPU, a ROM (Read Only Memory) that stores programs, a RAM (Random Access Memory) that temporarily stores data, and electronic circuits such as a timer. At least a part of the processing unit 17 may be an integrated circuit such as an LSI (Large Scale Integration).

[0024] The processing unit 17 controls the operation of the display unit 16 based on, for example, operation signals and detection signals output from the operation unit 11 and the sensors 12, 13, 14, and 15. The processing unit 17 acquires the speed V of the vehicle 1 based on the detection signal output from the rotation sensor 12. When displaying the speed V of the vehicle 1 on the display unit 16, the processing unit 17 updates the display on the display unit 16 at a display update period T corresponding to the speed V. For example, the processing unit 17 prestores information on a predetermined correspondence relationship between a speed threshold having so-called hysteresis and the display update period T, and sets the display update period T according to a result of a magnitude comparison between the speed threshold and the speed V.

[0025] Fig. 2 is a graph showing an example of the correspondence relationship between the speed V of the vehicle 1 during acceleration and deceleration and the display update period T in the display system 10 according to the embodiment of the present invention. Fig. 3 is a graph showing an example of the correspondence relationship between the speed V of the vehicle 1 and the display update period T in the display system 10 according to the embodiment. 2 and 3, the speed thresholds for determining whether or not the display update cycle T needs to be changed are a relatively small low side speed threshold VL and a relatively large high side speed threshold VH. The processing unit 17 changes the display update cycle T to an increasing tendency when the speed V of the vehicle 1 is equal to or greater than the high side speed threshold VH during acceleration, and changes the display update cycle T to a decreasing tendency when the speed V of the vehicle 1 is equal to or less than the low side speed threshold VL during deceleration.

[0026] For example, the processing unit 17 selects one of the initial display update period T0, the first display update period T1, the second display update period T2, the third display update period T3, and the fourth display update period T4, which increase sequentially, according to the speed V. For example, as shown in Figs. 2 and 3 and Table 1 below, in the initial state where the speed V is zero (zero kph), the first speed threshold VT1 for changing the display update period T between the first display update period T1 and the second display update period T2 is set to a first high side speed threshold VH1 (VT1 = VH1) that is greater than zero. The second speed threshold VT2 for changing the display update period T between the second display update period T2 and the third display update period T3 is set to a second high side speed threshold VH2 (VT2 = VH2) that is greater than the first high side speed threshold VH1. The third speed threshold VT3 for changing the display update period T between the third display update period T3 and the fourth display update period T4 is set to a third high side speed threshold VH3 (VT3=VH3) that is greater than the second high side speed threshold VH2.

[0027] [Table 1]

[0028] When the speed V is less than the first high-side speed threshold value VH1 which is zero or greater and greater than zero during the acceleration of the vehicle 1, the processing unit 17 sets the display update period T to the first display update period T1. When the speed V becomes greater than or equal to the first high-side speed threshold value VH1 due to the acceleration of the vehicle 1, the processing unit 17 changes the display update period T from the first display update period T1 to the second display update period T2, and thereafter regards the first speed threshold value VT1 as the first low-side speed threshold value VL1 (<VH1). When the speed V becomes greater than or equal to the second high-side speed threshold value VH2 which is greater than the first high-side speed threshold value VH1 due to the acceleration of the vehicle 1, the processing unit 17 changes the display update period T from the second display update period T2 to the third display update period T3, and thereafter regards the second speed threshold value VT2 as the second low-side speed threshold value VL2 (<VH2). When the speed V becomes greater than or equal to the third high-side speed threshold value VH3 which is greater than the second high-side speed threshold value VH2 due to the acceleration of the vehicle 1, the processing unit 17 changes the display update period T from the third display update period T3 to the fourth display update period T4, and thereafter regards the third speed threshold value VT3 as the third low-side speed threshold value VL3 (<VH3).

[0029] On the other hand, when the speed V is greater than the third low-side speed threshold value VL3 which is less than the third high-side speed threshold value VH3 during the deceleration of the vehicle 1, the processing unit 17 sets the display update period T to the fourth display update period T4. When the speed V becomes less than or equal to the third low-side speed threshold value VL3 due to the deceleration of the vehicle 1, the processing unit 17 changes the display update period T from the fourth display update period T4 to the third display update period T3, and thereafter regards the third speed threshold value VT3 as the third high-side speed threshold value VH3. When the speed V becomes less than or equal to the second low-side speed threshold value VL2 due to the deceleration of the vehicle 1, the processing unit 17 changes the display update period T from the third display update period T3 to the second display update period T2, and thereafter regards the second speed threshold value VT2 as the second high-side speed threshold value VH2. When the speed V becomes less than or equal to the first low-side speed threshold value VL1 due to the deceleration of the vehicle 1, the processing unit 17 changes the display update period T from the second display update period T2 to the first display update period T1, and thereafter regards the first speed threshold value VT1 as the first high-side speed threshold value VH1.

[0030] For example, the period change width (first period change width ΔT1=T1-T0) between the initial display update period T0 and the first display update period T1 is relatively larger than the period change width (second period change width ΔT2=T2-T1) between the first display update period T1 and the second display update period T2. The second period change width ΔT2 is relatively larger than the period change width (third period change width ΔT3=T3-T2) between the second display update period T2 and the third display update period T3. The third period change width ΔT3 is relatively larger than the period change width (fourth period change width ΔT4=T4-T3) between the third display update period T3 and the fourth display update period T4. The processing unit 17 changes the display update period T when the vehicle 1 accelerates so that the period change width changes to a decreasing trend, and changes the display update period T when the vehicle 1 decelerates so that the period change width changes to an increasing trend.

[0031] 4 is a flowchart showing the operation of the display system 10 according to the embodiment of the present invention. For example, the processing unit 17 repeatedly executes a series of processes shown in FIG. As shown in FIG. 4, first, in step S01, the processing unit 17 acquires the display update cycle T that is set at this time point. Next, in step S02, the processing unit 17 acquires the high side speed threshold value VH and the low side speed threshold value VL associated with the display update period T. Next, in step S03, the processing unit 17 acquires the speed V of the vehicle 1 based on the detection signal output from the rotation sensor 12.

[0032] Next, in step S04, the processing unit 17 determines whether or not the speed V is equal to or greater than the high speed threshold VH. If the result of this determination is "YES", the processing unit 17 advances the process to step S05. On the other hand, if the result of this determination is "NO", the processing unit 17 advances the process to step S06. Then, in step S05, the processing unit 17 increases the display update cycle T. Then, the processing unit 17 advances the process to step S08. Moreover, in step S06, the processing unit 17 determines whether or not the speed V is equal to or lower than the low speed threshold VL. If the result of this determination is "YES", the processing unit 17 advances the process to step S07. On the other hand, if the result of this determination is "NO", the processing unit 17 advances the process to the end. Then, in step S07, the processing unit 17 decreases the display update cycle T. Then, the processing unit 17 advances the process to step S08. Next, in step S08, the processing unit 17 updates the high side speed threshold VH and the low side speed threshold VL in accordance with the changed display update cycle T. Then, the processing unit 17 advances the process to the end.

[0033] As described above, the display system 10 of the embodiment sets a high side speed threshold VH during acceleration and a low side speed threshold VL during deceleration in order to change the display update cycle T according to the speed V of the vehicle 1. By setting a speed threshold having so-called hysteresis, the processing unit 17 can substantially extend the period during which the display update cycle T is maintained unchanged, compared to, for example, a case in which only a single speed threshold is set. By preventing the display update cycle T from being frequently changed according to the speed V, the user's comfort in viewing the meter can be further improved and the burden on the user can be further reduced.

[0034] The processing unit 17 changes the periodic change width to a decreasing trend during acceleration and to an increasing trend during deceleration, thereby improving the comfort of the user's meter viewing and further reducing the burden in response to changes in speed V.

[0035] According to the vehicle 1 or the display unit 10a of the embodiment, the period during which the display update cycle T is maintained unchanged can be substantially extended, and the discomfort felt by the user from visual information and the increase in the visual burden can be suppressed. For example, the convenience and comfort of speed display can be improved without depending on an appropriate device carried by the user.

[0036] (Modification) Modifications of the embodiment will be described below. Note that the same parts as those in the above-described embodiment will be denoted by the same reference numerals and descriptions thereof will be omitted or simplified.

[0037] In the above-described embodiment, the display system 10 is mounted on the vehicle 1, but this is not limiting. For example, at least a part of the display system 10 may not be mounted on the vehicle 1, or the vehicle 1 may include an external device that is not mounted on the vehicle 1 in addition to the display system 10. FIG. 5 is a configuration diagram of a display system 30 according to a modified example of the embodiment. As shown in FIG. 5, a display system 30 of the modified example includes a vehicle-side system 10A including a display unit 10b of the modified example instead of the display unit 10a of the above-described embodiment, and an information terminal 20 outside the vehicle 1. A display unit 10b of the modified example includes, for example, the display unit 10a of the above-described embodiment, and further includes a communication unit 18. The communication unit 18 communicates with an information terminal 20, for example, directly or via a network NW.

[0038] The information terminal 20 is, for example, a mobile information terminal such as a smartphone, a tablet terminal, or a personal computer, or a mobile display terminal, etc. The information terminal 20 includes, for example, an operation unit 21, a display unit 22, a communication unit 23, and a processing unit 24. The operation unit 21 includes, for example, an input device that is a user interface. The input device is, for example, a button or a touch panel that accepts an input operation by an operator's finger. The operation unit 21 outputs an operation signal according to the input operation by the operator. The display unit 22 is, for example, a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display. The communication unit 23 communicates with the vehicle-side system 10A, for example, directly or via the network NW.

[0039] The processing unit 24 is a software function unit that functions by a processor such as a CPU (Central Processing Unit) executing a predetermined program. The software function unit is an ECU (Electronic Control Unit) that includes a processor such as a CPU, a ROM (Read Only Memory) that stores programs, a RAM (Random Access Memory) that temporarily stores data, and electronic circuits such as a timer. At least a part of the processing unit 24 may be an integrated circuit such as an LSI (Large Scale Integration). The processing unit 24, for example, executes the same operations as the processing unit 17 in the above-described embodiment.

[0040] According to the information terminal 20 of the modified example, the period during which the display update cycle T is maintained unchanged can be substantially extended, and the discomfort felt by the user from visual information and the increase in the visual burden can be suppressed. For example, compared to a case in which various processes are executed by an appropriate device mounted on the vehicle 1, the need to increase the processing capacity of the device mounted on the vehicle 1 can be suppressed. For example, the versatility and comfort of the speed display can be improved without depending on an appropriate device mounted on the vehicle 1.

[0041] In the above-described embodiment, as shown in Fig. 4, the display update period T is changed according to a change in the speed V acquired by a series of processes repeatedly executed at appropriate timing, but the present invention is not limited to this. For example, the processing unit 17 may detect acceleration and deceleration of the vehicle 1 based on the detection signals output from each of the accelerator position sensor 13, the front brake sensor 14, and the rear brake sensor 15, or changes in the speed V. The processing unit 17 may separately execute different processes when the vehicle 1 accelerates and when it decelerates, that is, a process of changing the display update period T to an increasing tendency according to the high side speed threshold VH and a process of changing the display update period T to a decreasing tendency according to the low side speed threshold VL.

[0042] In the above-described embodiment, the speed threshold value for determining whether or not the display updating cycle T needs to be changed may be one or more. For example, when a plurality of different speed thresholds are set, the amount of change in the speed thresholds may be either constant or variable. The hysteresis width between the high side speed threshold VH and the low side speed threshold VL may be either constant or variable.

[0043] In the above-described embodiment, the vehicle 1 is described as a saddle-ride type vehicle in which the driver rides by straddling the body or sitting on the seat, such as a motorcycle, but is not limited to this and may be a moving body such as a vehicle with a riding position other than a saddle-ride type.

[0044] In addition, a program for realizing all or part of the functions of the display system 10, 30 of the present invention may be recorded in a computer-readable recording medium, and the program recorded in the recording medium may be read into a computer system and executed to perform all or part of the processing performed by the display system 10, 30. Note that the term "computer system" as used herein includes hardware such as an OS and peripheral devices. The term "computer system" also includes a WWW system equipped with a homepage providing environment (or display environment). The term "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into a computer system. The term "computer-readable recording medium" also refers to a storage device that holds a program for a certain period of time, such as a volatile memory (RAM) inside a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line.

[0045] The above program may also be transmitted from a computer system in which the program is stored in a storage device or the like to another computer system via a transmission medium, or by transmission waves in the transmission medium. Here, the "transmission medium" that transmits the program refers to a medium that has the function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The above program may also be for realizing part of the above-mentioned functions. Furthermore, it may be a so-called difference file (difference program) that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0046] The embodiments of the present invention are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope of the invention and its equivalents as described in the claims, as well as the scope and spirit of the invention. [Explanation of symbols]

[0047] 1...vehicle, 10, 30...display system, 11...operation unit, 12...rotation sensor, 13...accelerator position sensor, 14...front brake sensor, 15...rear brake sensor, 16...display unit, 17...processing unit, 18...communication unit, 20...information terminal, 21...operation unit, 22...display unit, 23...communication unit, 24...processing unit.

Claims

1. A display unit (16, 22) for displaying the speed of the moving object (1); a control unit (17, 24) that sets a display update cycle of the display unit in accordance with the speed; Equipped with The control unit is changing the display update period when the speed of the moving object is equal to or greater than a first speed threshold when the moving object is accelerating; The display update period is changed when the speed of the moving object is equal to or lower than a second speed threshold different from the first speed threshold during deceleration of the moving object. Display system.

2. The control unit is The first speed threshold is set relatively larger than the second speed threshold, changing the display update period from a first period to a second period when the speed is equal to or greater than the first speed threshold; When the speed is equal to or less than the second speed threshold, the display update cycle is changed from the second cycle to the first cycle. The display system of claim 1 .

3. The control unit is changing the display update period so that a period change width tends to decrease when the moving body accelerates; When the moving body is decelerating, the display update period is changed so that the period change width tends to increase. A display system according to claim 1 or 2.

4. A display system (10) according to claim 1, A detection unit (12) for detecting a state quantity related to the speed; Equipped with The control unit obtains the speed based on a detection signal output from the detection unit. Saddle type vehicle.

5. A display system (10) according to claim 1, The display system is mounted on the moving object. speedometer.

6. A display system (20) according to claim 1; A communication unit (23) for communicating with the mobile body; Equipped Mobile device.

7. A program executed by a computer that controls a display unit (16, 22) that displays the speed of a moving object (1), The computer includes: setting a display update cycle of the display unit in accordance with the speed; changing the display update period when the velocity of the moving object is equal to or greater than a first velocity threshold during acceleration of the moving object; changing the display update period when the speed of the moving object is equal to or less than a second speed threshold different from the first speed threshold when the moving object is decelerating; A program that executes the following.

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