 Optical color-separation system for use in a color television camera |
| In view of the above defects, the primary object of this invention is to provide an improved ... |
|
| Multiple site, differential displacement, surface contacting assembly |
| What is claimed is: 1. A multiple site surface contacting assembly comprising in combination: a ... |
|
| Multi-purpose telephone holder apparatus |
| OF THE INVENTION Referring to FIG. 1, there is shown a tray member 10. As will be explained, the ... |
|
| Support for a one-piece telephone |
| According to the present invention, there is provided a support for a one-piece telephone, ... |
|
| Adapter for protective mask for a helmet |
| I claim: 1. An adapter in combination with a fastening strap and a protective mask for a helmet ... |
|
| Retransmission control method and the apparatus |
| An object of the present invention is to provide an effective retransmission control method and an ... |
|
| Electronic component operating with acoustic waves |
| I claim: 1. An electronic component operating with acoustic waves, comprising: a substrate; at ... |
|
| Doppler radar clutter spike rejector |
| What is claimed is: 1. A doppler radar system for processing the received signal from a radar ... |
|
| System and method for transmitting information signals |
| What is claimed is: 1. A method for communicating information comprising the steps of: a. encoding ... |
|
| Signal acquisition using data bit information |
| Techniques are provided for aiding in acquiring a signal using the data bit information that is ... |
|
|
Measuring arrangement having a plurality of measuring points connected to one another by means of a cable
| Details |
Inventors: Chaborski, Hoiko; Mehnert, Walter;
Assignee: MITEC Moderne Industrietechnik GmbH (Ottobrunn, DE)
Primary Examiner: Swann, III; Glen R.
Assistant Examiner:
Attorney, Agent or Firm:
A measuring cable with spaced measuring stations is laid. The measuring stations each have a sensor whose electrical conductivity depends on an ambient variable such as temperatures light etc., each sensor is provided with a control arrangement which, due to a transmitted signal from a control center, connects its sensor to a constant current source and returns a signal indicative of any voltage change dependent on the variable ambient which signal is measured by the control center. The measuring cable is divided into sections each having a selectable circuit which can be selected individually by the control center. A clock pulse signal is transmitted to all measuring stations but is only active for the cable section which has been selected. In this manner, the cable section can be chosen as desired, the time required for the control center to have access to certain measuring stations is shortened and semiconductor switches can be used because measurements are only made in the steady state. |
|
DETAILED DESCRIPTION What is claimed is: 1.
In an arrangement for measuring variable ambient physical parameters having a plurality of measuring stations connected by means of a multiwire cable to one another and to a remote control and measuring centre, each of said measuring stations comprising at least one sensor (20) which changes its electric resistance dependent on the physical ambient parameter, at least one switch arrangement (21) which in its closed state connects the sensor via a first wire (22) of the cable to a common energy source from and via a second wire (23) back to the control and measuring centre (2), and a control circuit (25, 45) which closes the switch arrangement (21) for a short period for each measuring operation and then opens it, said stations being arranged along said cable in a plurality of sections (7-13), each section being provided with a selectable circuit (15) independently activated over a third wire (16) by the control and measuring centre (2), said control circuits (25) of each of said measuring stations within each cable section being triggered by said control and measuring centre sequentially one after another for closing the corresponding switch means (21) only after activation of the corresponding selectable circuit (15), by means of a clock signal commonly transferred by a fourth wire (17) to all measuring stations from the control and measuring centre (2).
2.
The system according to claim 1, wherein the control circuit of each measuring station (5) includes a flip-flop arrangement (25, 45), and the closing of the corresponding switch arrangement (21) is effected by the appearance of a predetermined logic level at least at one output of the corresponding flip-flop arrangement (25, 45), said flip-flop arrangements (25, 45) in each cable section (7 to 13) being connected together in the manner of a shift register into whose first stage the predetermined logic level can be inputted when the selectable circuit (15) is activated and shifted further from stage to stage by the clock signal transmitted from the control and measuring centre (2)
|
|
Cell Phones 
