Abstract:
A vehicle speed is obtained from detection signals obtained from wheel speed sensors. In a case where a vehicle speed calculation is shifted from a first method to a second method, a vehicle speed displayed on a speedometer is gradually changed from the vehicle speed obtained by the first method to the vehicle speed obtained by the second method. This avoids abrupt change in the displayed vehicle speed causing the driver to feel discomfort.
Abstract:
A method is disclosed which is for assembling to an automotive instrument panel a meter module having incorporated therein meters, their control circuits. On an outer wall (9a) of a meter module (A) is provided a guide projection (10) extending in a fitting direction. On a ceiling wall (12a) of a meter-module receiving portion (12) of an instrument panel (P) is provided a guide recess (13) for receiving therein the guide projection (10). The meter module (A) is received into the meter-module receiving portion (12), with the guide projection (10) inserted in the guide recess (13), followed by coupling connectors (5a) on the part of the meter module (A) and connectors (16) attached to a wiring harness (15) together. The working efficiency during assembly of meter modules to a vehicle is improved, while contributing to a reduction in weight of meter modules.
Abstract:
A CPU measures pulse width of a vehicle speed pulse signal transmitted from a vehicle speed sensor continuously and estimates the pulse width coming next according to the pulse width of the present pulse and preceding pulses. The CPU calculates a set position of a stepping motor from the data of the pulse width and the estimated pulse width, and calculates the number of steps for the stepping motor to move to the set position from the set position data and the present position data. Each driving time of the stepping motor is calculated from the estimated pulse width data and the number of steps.
Abstract:
A method is disclosed for the monitoring of items of equipment by a user, of the type comprising the operations consisting of sensing stresses undergone by the items of equipment, recording signals corresponding to these stresses, then reading out these signals after possible processing. The device is of the type comprising at least one sensor connected to a recorder assembly equipped with a microprocessor, memories, a time stamp, device for programming the microprocessor and device for reading out stored data. It is characterized in that one memory is intended to contain programs for data acquisition and processing, another memory is intended to contain rules and specific data selected by a user and constituting a specific job, which memory is on the one hand in a state of permanent back-up as soon as the rules and specific data are effectively stored and on the other hand protected against access by any person other than the user, the device also comprising a memory which is to contain data from the sensor or sensors as well as a device for selective access to the memories associated with a condemnation device capable of being neutralized by the user only.
Abstract:
A device for detecting and counting occurrences of specific human motions. The device includes structure for mounting the device to an object or a part of the human body which takes part in the motion. The device further comprises at least one acceleration-sensitive switch, a computer connected to an output from the acceleration-sensitive switch, a reset switch connected to the computer, and a display which is controlled by the computer. The acceleration-sensitive switch is preferably uniaxial, and therefore closes to complete a circuit and generates a pulse only when subjected to acceleration forces in a predetermined direction. The computer is programmed to detect the duration of the pulses received from the acceleration-sensitive switch, and is further programmed with parameters indicative of the minimum duration of such a pulse which will be deemed to have resulted from the occurrence of the specific human motion. By programming the computer in this manner, the computer determines when the human motion has occurred. The computer is further programmed to count the number of pulses which have exceeded the minimum duration, and to generate an output signal to the display indicative of this count.
Abstract:
The present invention is concerned with a displaying apparatus for a vehicle which assures that a displayed image for displaying informations on the present running state of the vehicle such as a running speed or the like in the form of a virtual image by reflecting the displayed image on the displaying unit to an eye range on the driver's seat with the aid of a first reflective plate, and its object resides in providing a displaying apparatus of the foregoing type which assures that quality of the displayed image can be improved with inexpensive construction, and moreover, visual recognizability of the displaying apparatus can be improved (with improved optical contrast). According to the present invention, a surface glass disposed on a displaying unit adapted to allow displaying light beam from a second reflective plate to permeate through a first reflective plate is inclined in such a manner that a virtual image (ghost) identical with a displayed image built by the first reflective plate and the second reflective plate is located outside of a visual recognizable area.
Abstract:
A moving magnet type indicating instrument comprising a moving magnet type instrument, a counter mechanism, a drive unit, and a frame body produced of a synthetic resin. The magnet type indicating instrument includes a magnet mounted in bobbins produced of the synthetic resin, a needle shaft fixed to the magnet, and a coil wound at an angle on the bobbins. The bobbins are housed in a magnetic shield case and the coil is electrically connected to terminals provided on the bobbins. The counter mechanism, including a total counter and reset counter having a zero-resetting device, is mounted on the frame body. The drive unit comprises a case including a step motor for driving the counter mechanism and a groove of gears, and is fixed to the frame body. Terminals for the moving magnet type indicating instrument and the drive unit are inserted and connected to the connectors provided on a printed-circuit board. Therefore, it is possible to easily electrically connect and fix the moving magnet type indicating instrument and the drive unit to the connectors on the printed-circuit board through these terminals.
Abstract:
In the revolution frequency indication apparatus in which the revolution frequency of a rotating body is measured and indicated according to a sensor pulse obtained from a revolution sensor mounted on said rotating body or its surrounding, a revolution frequency indication apparatus comprising an indication updating time counter circuit which counts predetermined indication updating time intervals, and a revolution frequency measurement portion which measures the revolution frequency of said rotating body by means of a sensor pulse entered within a measurement time interval of said counter circuit.
Abstract:
A method is provided for displaying the speed and the distance on board a motor vehicle. The shaft of an auxiliary motor drives a speed indicator and a mileage recorder and its rotation controls a train of pulses. The speed of rotation of the auxiliary motor is controlled so that the period of the train of pulses and the total number of pulses are slaved respectively to the period of another train of pulses and to their total number, this other train of pulses being controlled by the rotation of one of the wheels of the vehicle.
Abstract:
A shifting timing indicating system for a vehicle includes a control circuit having an engine rpm sensor for detecting the engine rpm and a rpm comparator which receives the output of the engine rpm sensor and determines whether the engine rpm exceeds a preset value. The control circuit outputs a shift-up signal when the engine rpm exceeds the preset value. A shift-up indicator receives the shift-up signal from the control circuit and makes a shift-up display to direct the operator of the vehicle to shift up. An acceleration detecting circuit detects the rate of increase in engine load and the shift-up indicator is inhibited from making the shift-up display for a predetermined time interval which is extended with increase in the rate of increase in engine load.