DE449383C - Electrical remote indicator for barometer, thermometer, hygrometer, etc. Like. With separate donor and receiving work - Google Patents

Description

The invention relates to an electrical telecommunication device, in particular for meteorological Information that makes reading z. B. a barometer on a remote from the barometer Position, for example _ on a tower.

Such telecommunication devices, as they are already known for various other purposes consist of a transmitter and ίο a receiver that are electrically connected to each other are connected. Here it is known that the encoder station has received feedback from to indicate to the receiving station that the command from the sending station has been sent to the receiving station is executed.

The meteorological telecommunication device also makes use of these known devices, the novelty of which is ^{the peculiar design of the transmitter and receiver 1 -works.} These works are adapted to the peculiarities of meteorological instruments, in which, as is well known, the moving forces are very small and in equilibrium with one another, so that these forces must not be weakened in any way unless the equilibrium is disturbed and false information is obtained. According to the invention, the hands of both works are almost fixed, that is, they play only in a very small space between two contacts, while the works under the hands are rotated away from under the hands in different directions. The new telemaker is briefly characterized by the following working process: The movement of the pointer movement of the transmitter mechanism causes the receiver mechanism to be slightly rotated in relation to its stationary pointer by means of the electric current, whereby the receiver mechanism's pointer closes a circuit which now causes the transmitter mechanism to move its pointer follows in its previous direction of rotation, whereby the pointer of the encoder mechanism returns to its rest position between two contacts.

For a more detailed illustration of the invention, what is shown in the drawing is used Circuit diagram for the remote transmission of barometer readings.

The transmitter unit I or the actual barometer 1 rests centrally on a disk 2 which can be rotated about its axis on a plate 3. On the plate 3, two contacts A, B are fixedly attached at a certain distance from one another, between which a pointer 4 oscillates, depending on the tendency of the air pressure, falling on the left contact A and rising, touching the right contact B. In the rim of the disk 2 teeth are cut into which a worm S engages, at the ends of each axis a small motor M _z , M ^ is attached, by which the disk 2 can be moved to the left or right. Since the pointer 4 is stored in a very limited, almost fixed position and the movement 1 is rotated under the pointer 4, a circular graduation 6 is attached to the disk rim, to which an index /, which is on the plate 3 is located, the respective barometer reading can be read.

The receiving mechanism II consists of two disks 7, 8 seated centrally on a common axis. On this axis, the pointer disk 7 is fixedly arranged with a pointer 9, while the contact disk 8 can be rotated on it. The latter has two spring-loaded contacts A ₁ , B ₁ arranged at the same distance as the contacts of the transmitter unit I , which, depending on the message from the transmitter unit I, come into contact with the pointer 9 located between them. In the ring of the pointer and the contact disk 7 and 9 are

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As in the case of the disk, 2 teeth are cut into which two worms 10, 11 engage, which move the disks 7 and 8 left or right by one of the motors M ₁ , M ₂ and M ₅ , M _{6 mounted on their shaft ends.}

The mode of operation of the new telecommunication device will now be explained using an example: Increases the air pressure, the pointer 4 of the moves

ίο barometer 1 to the right and comes to rest on contact B of plate 3, whereby a weak current circuit can be seen in the drawing - power source Acc. I, line 12, pointer 4, contact B, line 13, relay R ₂ , line 14, Acc. I - is closed. The relay R ₂ excited in this way closes a power circuit through its armature - feed line 15, line 16, motor M ₂ , line 17, 15 - whereby the motor M ₂ rotates the pointer disk 7 together with the pointer 9 clockwise through the intermediary of the worm 10. As a result of this rotation, the pointer 9 comes to rest on the contact B _{1 of} the disk 8, whereby the following two low-voltage circuits are closed simultaneously - Acc. II, 18, 9, B ₁ , 19.20, ^ ₆ , 21, Acc. II - and - Acc. II, 18, 9, B ₁ , ig, 20, R _is 21, Acc. II -. The now energized relays R _e and /? ₄ simultaneously put two power circuits - 15, 22, M ₆ , 23, 15 - and - 15, 24, M ±, 25, 26, 15 - under voltage, whereby the motor M _e turns the contact disk 8 clockwise by means of the worm 11, so that the contact B ₁ moves away from the pointer 9 and interrupts the circuit with the relay R _e , and at the same time the motor M _i by means of the worm 5 turns the disc 2 and thus also the barometer 1 somewhat back, so that the pointer 4 the fixed contact B leaves.

By opening contacts 4, B and 9, B ₁ at the same time, relays R ₂ and R _{1 that have been in operation} and the motors M ₂ and M ^ controlled by them are de-energized, so that the transmitter and receiver

4-5 factory are at rest, with the hands 4, 9 occupying their central positions between the contacts A, B and A ^ B _1.

If the air pressure continues to rise, the above-described game starts again; if, on the other hand, the air pressure falls, the pointer 4 will touch contact A , whereby the same game occurs with the opposite direction of rotation, with the relays R ₁ , R ₃ , R working accordingly ₅ and the motors M ₁ , Μ _Ά , M ₅ repeated.

So that the contact does not take place immediately, it is advisable, in the practical version of the new meteorological telecommunication device, not to couple the motors M _x to M ₆ directly to the axes of the screws 5, 10, 11, but rather to couple them between the screw axes and the motor shafts To switch on single-tooth gear with Maltese cross, whereby the immediate message is inhibited for a short time. Furthermore, the number of motors can be reduced by half if reversible motors are used to which the circuit would have to be adapted. The relay circuits could also be supplied from the feed line with the interposition of known throttle systems and voltage converters.

Claims (3)

Patent claims: 1. Electrical remote indicator for barometers, thermometers, hygrometers and the like. With separate transmitter and receiver units, characterized in that the pointer (4) of the rotatably mounted transmitter unit (1) is arranged between two fixed contacts (A, B) , and that when the pointer deflects, the transmitter mechanism (I) is moved back by the receiver mechanism (II) counter to the rotation of the pointer that has taken place by a piece corresponding to the pointer deflection and causing a contact closure (4, A or 4, B). 2. Telecommunication device according to claim 1, characterized in that the receiving unit (II) consists of two turntables (7,8), of which the disc (7) is firmly connected to the pointer (9), while the disc (8) has two Contacts (A ₁ , B ₁ ) carries, which are located on both sides of the pointer (9). 3. Telecommunication device according to claim 1 and 2 with switched on in the circuits relays and motors, characterized in that the contact caused by a pointer deflection (4, A or 4, B) closes one or more circuits, whereby the pointer disk (7,9 ) of the receiving mechanism (II) is rotated by a piece corresponding to the pointer deflection according to direction and size, so that the pointer (9) by touching one of the contacts (A ₁ , B ₁ ) closes one or more additional circuits, which in turn simultaneously the discs (8 and 2, 1) turn in such a way that both pointers (4,9) are in their central position between the contacts (A, B and A ₁ , B ₁ ) , whereby all circuits are switched off at the same time. 1 sheet of drawings.