IEEE Std 1937.1-2020 pdf download

IEEE Std 1937.1-2020 pdf download.IEEE Standard lnterface Requirements and Performance Characteristics of Payload Devices in Drones.
IEEE Std 1937.1-2020
IEEE Standard Interface Requirements and Performance Characteristics of Payload Devices in Drones
The requirements of the electrical interface are described in 6.3.
5.3 Data interface
The data interface can also be expressed as the communication protocol. In telecommunication, a communication protocol is a system of rules that allow two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics, and synchronization of communication and possible error-recovery methods.
Communicating systems use well-defined formats for exchanging various messages. Each message has an exact meaning intended to elicit a response from a range of possible responses pre-determined forthat particular situation. The specified behavior is typically independent of how it is to be implemented. Communication protocols have to be agreed upon by the parties involved. The requirements of the data interface are described in 6.4.
6. Interface requirements
6.1 General requirements
General requirements of all types of payload interfaces are as follows:
a) The interface between unmanned aircraft and payload consists of two mating connectors, one located at the unmanned aircraft and the other located at the payload. The two parts of the interface are connected mechanically and electrically by a specific mechanism. For a payload with high stability requirements, the interface should support the connection to the gimbal.
b) The interface shall have error-proofing design, such as anti-reverse plug design, anti-mistake plug design, interface identification, etc.
c) The interface shall be designed to withstand abrasion, and for convenient repetitious insertion and removal.
d) The interface shall have a locking mechanism to avoid loosening and falling off.
e) The interface connection shall be able to withstand adverse mechanical environmental conditions. such as vibration, shock, and drop that may occur during normal transportation, handling, and flight. The interface should be equipped with vibration dampers.
f) The interface shall meet applicable safety requirements during installation, use, and maintenance. Its accessible surface shall be free from burr, flash, and other sharp edges.
g) The interface shall be dustproof and waterproof.
h) The interface shall be corrosion proof and rustproof.
i) The interface should be flame resistant, and produce no toxic smoke.
j) Hot swapping of payloads shall not be permitted to avoid accidental personal injury and electronics damage, unless sufficient safety designs and protection measures are made. If needed, an electrical interftce capable of hot-swapping shall be designed to reduce the risk of damage or performance degradation rhile connecting or disconnecting the payload. Possible corruption of signal or data shall also be reliably detected.
6.2 Mechanical interface
Requirements of the mechanical interface are as follows:
a) The mechanical interface shall match the reserved structure of the unmanned aircraft interface or the gimbal, and the structure size should be as small as practical.
b) The weight of the mechanical interface should be as light as practical.
c) The structure of the mechanical interface shall be stable, not easy to deform.
d) The structure of the mechanical interface shall be easy to mount and dismount.
e) The mounting position of the mechanical interface shall not adversely affect the stability of the unmanned aircraft.
f) For the interface used on drones with gimbal, the equipped payload gravity center should be in the center line of the gimbal pitch axis.
6.3 Electrical interface
Requirements of the electrical interface are as follows:
a) If the power supply requirement of payload can be met by the drone through reliable communication. the drone shall supply power to payload devices through the electrical interface according to the requirement; ifthe requirement cannot be communicated or met, the power shall be supplied according to the capacity of the drone.
h) The drone should provide a regulated dc power output to payload devices through the electrical interface at a minimum.
c) The drone may provide unregulated dc power to payload devices through the electrical interface.
d) Power supply provided by the electrical interface shall have short-circuit protection. The drone should have the ability to limit the current consumption of payload devices to prevent excessive exploitation of battery power.
e) Current-carrying capacity of the electrical interface contacts shall be sufficiently derated to verify maximum temperature rise be no more than 20 °C under the highest loading situation. High-current power and ground connections should use irniltiple redundant contacts.