ISO 7176-14:2022 車椅子— Part 14: 電動車椅子およびスクーター用の電源および制御システム—要件と試験方法 | ページ 6

3.1

analogue signal

signal in which the characteristic quantity representing information can at any instant assume any value within a continuous interval

Note 1 to entry: An analogue signal can follow continuously the values of another physical quantity representing information.

[SOURCE:IEV 702-04-02]

3.2

battery

one or more cells that are electrically connected together and fitted with devices necessary for use

[SOURCE:IEV 482-01-04, modified]

3.3

battery charger

device that is connected to supply mains and to a battery set for the purpose of charging the batteries

3.4

battery compartment

removable or non-removable enclosure for one or more batteries

3.5

battery set

set of interconnected batteries used to power a wheelchair

3.6

battery terminal

terminal on a battery to which a cable or connector can be connected

3.7

capacity

electric charge that a cell or battery can deliver under specified discharge conditions

Note 1 to entry: The SI unit for electric charge is the coulomb, C [1 C = 1 A·s (ampere-seconds)] but in practice, capacity is usually expressed in ampere-hours (A·h) or watt-hours (Wh).

[SOURCE:IEV 482-03-14, modified]

3.8

charge completion voltage

voltage, normally specified by the battery manufacturer, to which a battery is charged in defined circumstances, required to assure that a battery can be fully charged

3.9

charge rate

electric current at which a secondary cell or battery is charged

Note 1 to entry: The charge rate is expressed as the reference current I_t = C_r/n where C_r is the rated capacity declared by the manufacturer and n is the time base in hours for which the rated capacity is declared.

[SOURCE:IEV 482-05-45]

3.10

coexistence

ability of two or more spectrum-dependent devices or networks to operate without harmful interference.

Note 1 to entry: Spectrum dependence may include, but is not limited to radio, ultrasound and infrared.

[SOURCE:IEEE Std 1900.1:2008, B28]

3.11

command signal

electrical signal from the control device

3.12

control device

device with which the operator indicates the desired speed and/or direction of movement of the wheelchair and can optionally control their position within the wheelchair

Note 1 to entry: A control device can be an integral part of a controller.

3.13

controller

electrical devices, circuits, and the case(s) in which they are housed, that are used to convert the operator's indication of desired speed and/or direction of movement into the appropriate power that is supplied to the motor(s)

3.14

cut-off voltage

voltage specified by the battery manufacturer at which the discharge of a battery is considered finished

[SOURCE:IEV 482-03-30, modified]

3.15

discharge rate

electric current at which a battery is discharged

Note 1 to entry: The discharge rate is calculated as the rated capacity divided by the corresponding discharge time, which results in an electric current.

[SOURCE:IEV 482-03-25]

3.16

draught-free environment

space in which the results of experiments are not significantly affected by the local air speed

Note 1 to entry: A qualitative example is a space in which a wax candle flame remains essentially undisturbed. Quantitative examples are small-scale fire tests in which a maximum air speed of 0,1 m⋅s⁻¹ or 0,2 m⋅s⁻¹ is sometimes specified.

[SOURCE:ISO 13943:2017, 3.83]

3.17

enclosure

part providing protection of equipment against certain external influences and, in any direction, protection against contact

Note 1 to entry: Enclosures provide protection of equipment against harmful effects of mechanical impacts.

Note 2 to entry: Barriers, shapes of openings or any other means – whether attached to the enclosure or formed by the enclosed equipment – suitable to prevent or limit the penetration of the specified test probes, are considered as a part of the enclosure, except when they can be removed without the use of a key or tool.

3.18

entry point

output terminals of the battery charger for on-board, off-board and carry-on chargers

3.19

harm

physical injury or damage to the health of people or animals, or damage to property or the environment

[SOURCE:IEC 60601-1:2005+AMD1:2012, 3.38]

3.20

hazard

potential source of harm

[SOURCE:IEC 60601-1:2005+AMD1:2012, 3.39]

3.21

hazardous situation

circumstance in which people, property or the environment are exposed to one or more hazard(s)

[SOURCE:IEC 60601-1:2005+AMD1:2012, 3.40]

3.22

latched control

function that remains active without continuous input from the operator

3.23

leakage current

electric current in an unwanted conductive path other than a short circuit

[SOURCE:IEV 151-15-49]

3.24

pinch point

location at which a moving part comes into contact with or close proximity to another part such that another object at that location would be cut or crushed

3.25

single fault condition

condition in which a single means for reducing a risk is defective or a single abnormal condition is present

[SOURCE:IEC 60601-1:2005+AMD1:2012, 3.115, modified]

3.26

switch

mechanical switching device capable of making, carrying and breaking currents under normal operating conditions which might include specified operating conditions, overload conditions and also carrying for a specified time currents under specified abnormal circuit conditions such as those of short circuit

Note 1 to entry: A switch may be capable of making but not breaking short circuit currents.

[SOURCE:IEV 441-14-10]

3.27

terminal

conductive part of a device, electric circuit or electric network, provided for connecting that device, electric circuit or electric network to one or more external conductors

Note 1 to entry: Removable bolts, screws and fasteners are not considered part of a terminal.

[SOURCE:IEV 151-12-12]

3.28

theoretical state of charge

electric charge added to a fully discharged battery by charging at a known charge rate for a known time, or estimated to remain in a battery that has been fully charged and then discharged at a known discharge rate for a known time, and expressed as a percentage of the rated capacity