摘要:
A helmet display for displaying information to a user thereof while the user is riding, for example, a motorcycle. A display mounted on a helmet includes a plurality of display elements horizontally aligned in a spaced relation along the curvature of the jaw of the helmet. A reflector reflects the images of the display elements into the eyes of a user wearing the helmet. The images of the display elements form as a whole information to the user. The reflector may be a reflective surface provided at a lower portion on the shield of the helmet. The reflector may be mounted on the upper portion of the jaw and the reflective surface thereof may have a curvature substantially the same as that of the jaw of the helmet.
摘要:
A microcomputer 23 monitors the battery condition by detecting a first deterioration degree caused by increase of an internal resistance of a battery 13 and a second deterioration degree caused by inactivation of an activation material in the battery 13 based on outputs of a current sensor 15 and a voltage sensor 17.
摘要:
A method of estimating a state of charge of a battery, a method of estimating an open circuit voltage of a battery, and a method and device for computing a degradation degree of a battery are provided. As a degradation degree, a ratio of a total electrical quantity chargeable or dischargeable of a battery at any time point to an initial electrical quantity that is a total electrical quantity chargeable or dischargeable of the battery upon non-degradation is computed, and by using the degradation degree, a state of charge or an open circuit voltage of the battery is accurately estimated.
摘要:
In an apparatus for measuring a pure resistance of an in-vehicle battery, a terminal voltage and a discharging current of the battery are measured when the discharging current flows from the battery. A first approximate equation of a voltage-current characteristic curve is acquired for an increasing discharging current, and a second approximate equation is the voltage-current characteristic curve is acquired for a decreasing discharging current. Two points providing equal synthesized resistances each composed of the pure resistance and polarization resistance component are set on the voltage-current characteristic curves represented by the first and the second approximate equations, respectively. The gradients between the two points in each of the voltage-current characteristic curves are corrected to provide two corrected gradients each exclusive of a voltage drop due to the polarization resistance component. The two corrected gradients are averaged to provide an average value which is measured as a pure resistance of the battery.
摘要:
As a simulation load is driven with an object cell, a cell discharge stop voltage is estimated by collecting data of a discharge current and a terminal voltage, processing the collected data to obtain an approximate linear function between the discharge current and the terminal voltage, substituting a first reference value into the linear function to estimate a first voltage, making a decision for the first voltage having reached a second reference value, responding to the decision for substituting a third reference value into the linear function to estimate a second voltage, and outputting the second voltage as a representative value of the discharge stop voltage.
摘要:
A sensor contactlessly driven by a single power supply is disclosed. A current flows in a resistor R.sub.L through the secondary winding of a coil in the direction corresponding to the direction of magnetic fluxes generated in the coil in accordance with discharge or charge mode of a main battery. The input terminal of a voltage follower is connected to the voltage-dividing point of a series circuit including resistors R.sub.1 and R.sub.2 and a reference voltage control circuit. The reference voltage control circuit changes the input voltage of the voltage follower in accordance with the direction of the current flowing in the resistor R.sub.L. It follows therefore that the measurement range is switched in accordance with discharge or charge mode of the main battery, with the result that the overall measurement range can be widened in spite of the fact that only a single power supply +Vcc is used.
摘要:
In a semiconductor device which has an air tight metal package containing a high frequency wave range circuit element and which has a waveguide-coaxial line transformation structure, a metal terminal for the waveguide-coaxial line is air-tightly attached directly in a hole of a base of the metal package with a dielectric spacer, usually by glass fusion, whereby the thickness of the base may be reduced and attachment of the terminal to the base is simplified.
摘要:
A blood fluidity-improving agent, a blood circulation promoter or a cerebrovascular disease-improving agent, containing as an active ingredient thereof one or more ingredients selected from the group consisting of chlorogenic acids, caffeic acids, ferulic acids and pharmaceutically acceptable salts of these acids. The present blood fluidity-improving agent, blood circulation promoter or cerebrovascular disease-improving agent is highly safe and can be orally taken over longer periods of time.
摘要:
A microcomputer monitors, on the basis of outputs from a current sensor and voltage sensor, a voltage drop due to an internal resistance when the drop in the terminal voltage due to polarization occurring during the discharge of a battery is saturated, and a dischargeable capacity of the battery corresponding to the value resulting when the saturated voltage drop of the terminal voltage is subtracted from the chargeable capacity of the battery. Such a configuration provide a battery status monitoring device capable of knowing the battery status correctly, a saturation polarization detecting method which is useful to know the charging state of the battery and a dischargeable capacity detecting method.
摘要:
A method and apparatus are provided, by which a state of charge of a battery is accurately computed without being influenced by the polarization effect. An estimated voltage of the battery 13 in a constant load discharge with a predetermined large current value is estimated from a voltage-current characteristic when the discharge current of the constant load discharging process by the battery 13 that is in an equilibrium state is decreasing from the predetermined large current value corresponding to a maximum supplying electric power to the load. A difference between the estimated voltage and an open circuit voltage, which estimates the estimated voltage and is a terminal voltage of the battery 13 that is in an equilibrium state before the start of the constant load discharge by using the predetermined large current value, is calculated. Then, the difference is memorized by first memory means 27 for memorizing a residual voltage drop defining as the residual voltage drop due to a residual polarization at the end of the discharging process of the battery 13. The residual voltage drop memorized by the first memory means 27 is added to the estimated voltage of the battery 13, thereby a present charging capacity of the battery 13 is computed.