Consumption measuring device, in particular heating or warm water cost measuring device.

The invention relates to an electrical utility distribution, especially heating cost or warm water distribution, for residential and / or business premises with wireless transmission of the measured consumption values ​​together with the identification and specification of data to a central office, for onward transmission to a central accounting office or for immediate execution of the consumption billing.

Purpose of the invention is to promote the central reading of the consumption determined by cost distributors consumption values.

It is known to the central reading of consumption distribution in the form of heat cost allocators make a central reading in that the individual devices are connected via a plurality of the same sensing wire loops with an outside homes provided central point at which the consumption data, if not the individual measuring points, so but the entire apartment can be read, possibly even are ausdruckhar.

However, this requires extensive electrical installations are required to connect the individual consumption distribution with the central office. Moreover, the wirings of the central detection systems are easily exposed to disturbances which affect the functional safety of such a facility.

It is also known to provide trained as cost allocators consumption distribution with small built UFH transmitters which transmit the measured values ​​determined at an outside homes provided central office that accepts and processes the measured values ​​via an associated radio receiver, the documents sent by the individual measuring points.

The invention is based, to improve the consumption distribution devices used for such a known wireless consumption distribution system, in particular heat cost allocators in terms of their technical configuration the task.

The invention solves this problem in that the antenna of the consumption distribution is formed as an extending in the longitudinal direction of the housing of the consumption manifold elongated electrically conductive member connected the adjacent at one end to the electrical output of this end associated circuitry of the UHF transmitter is and the other end is kept electrically isolated.

A special feature of the invention is that the antenna is formed as on the exterior of consumption manifold in the longitudinal direction along guided member whose one outer end electrically connected to the output of this end in the housing of the consumption manifold adjacent circuitry (16) of the UHF transmitter (18) and the other end isolated ends on the housing.

Another specific embodiment of the invention is seen in the fact that the antenna is located formed as a along the printed circuit board extending electrically conductive member having one end electrically adjacent to the output of this end or close to the printed circuit board arranged circuitry of the UHF is connected transmitter and the other end is kept isolated.

Finally, an additional embodiment of the invention is recognized that the antenna is formed with its bent both ends on this supported terter wire hanger as a along the printed circuit board extends, which with its one end to the electrical output of the immediately adjacent to this end is connected on the printed circuit board arranged circuitry of the UHF-transmitter, and which is with its other end connected to the isolated conductor plate.

Further developments and embodiments of the invention can be taken from the dependent claims.

The invention has to have a number of advantages. Thus, no special installation of the antenna outside the case, for example of the heat cost allocator is required. A separation between the equipment and the antenna does not come about, but both units always remain united, for example during assembly or disassembly of the consumption manifold, eg heat cost allocator; special measures to antenna installation are therefore not necessary.

The invention is explained in the form of an embodiment in this specification and illustrated in the accompanying drawings.

Show it:<dl id="dl0001"><dt>figure 1</dt><dd>a plan view of the lower housing part of an open heat cost allocator of a first embodiment of the invention; </dd><dt>figure 2</dt><dd>a side view of the removed from the lower housing part of the heat cost allocator according to Figure 1 the upper housing portion;</dd><dt>figure 3</dt><dd>a side view of the upper housing part of a second embodiment of the invention;</dd><dt>figure 4</dt><dd>a plan view of the lower housing part of an open heat cost allocator of a third embodiment of the invention;</dd><dt>figure 5</dt><dd>a left side view of the printed circuit board of the heating cost distributor according to a fourth embodiment of the invention.</dd></dl>

Figures 1 and 2 illustrate a heat cost allocators are according to the invention. Figure 1 shows the lower housing part 1 with the inserted printed circuit board 2, which is mounted with screws 3. On the printed circuit board 2, a digital display 4 for the current consumption value, and another digital display 5 is provided for the evaluation factor. This value is a handheld computer can be supplied via a plug connector 6 entered, taken over which also determined consumption values ​​(new and old values) and.

On the circuit board 2 inte-grated circuits 7, 8, a radiator sensor 1o, components 11, 12 and other integrated circuits 13, 14 are further provided. The feeding of the heat cost allocator is performed on a common battery, in particular lithium battery 15, which is also arranged on the printed circuit board second Down at the far end of the circuit board 2, the circuit arrangement is finally 16 for the UHF miniature transmitters 18th This circuit 16 is applied to a small, separate printed circuit board 19 and consists of a number of not shown devices, such as transistors, resistors and inductors. Suitably, a surface acoustic wave element 22 has been used as a resonator for the circuit arrangement of the UHF micro-transmitter that permits small size and stable frequency ratios. The circuit arrangement 16 is mounted at the lower extremity of the housing of the heat cost allocator, in order to enable the longest possible extent of the antenna 2o. This is designed as a wire bracket 17 and the outside of the housing 1, 21 is guided along. It is designed as Marconi antenna which oscillates at a frequency of quarter wave; it is at the electrical output 4o either soldered at the lower end of the circuitry 16, or - as the embodiment shows - releasably screwed to a terminal 23rd

At the top of the antenna is 2o kept electrically open or isolated, however, she has there a turn or bend 24 which is received in a corresponding recess 24 'of a housing extension 25, 26th

With a closed casing 1, the antenna 21 2o in its housing 24 'and bracket 23 is secured.

The circuitry 16 of the UHF transmitter operates at a UHF frequency of approximately 45o MHz, precisely with a product approved by the Telekom for control and measurement purposes in the field frequency.

Due to the limited length ratios of the antenna 2o an adaptation to the transmitted frequency is only possible, however, the ratios given represent a acceptable compromise.

3 shows a similar embodiment of the invention, as those of figure 1 and 2 is illustrated. There, the antenna is 2o out side of the housing upper part 21 along metal as a decorative strip 27th This is supported with their outer ends 28, 29 on the side surface of the housing upper part 21, additionally glued still advantageous with this.

At the end of 29 the trim has 27 via an attachment 3o, which projects into the region of the printed circuit board 2 of the housing part 1 and there with closed housing 1, 21 passes on the printed circuit board 19 to the contact-making support.

Of course, which is designed as decorative strip 27 antenna could 2o also be provided on the lower housing part. 1 The assignment of the antenna 2o to the housing upper part 21 has the advantage that this (2o) - is arranged further away from the radiator and thus the radiation of the former is less damped - in case of a heat cost allocator. In many cases, the arrangement is already made so that the printed circuit board 2 with their devices 4 - 16 or modules located within the upper housing portion 21 and thus the assignment of antenna 2o to this (21) is recommended or suggest.

According to an expedient embodiment of the invention that could be 27 completely or partially injected in Figure 3, the antenna 2o performing or forming metal band or the trim in a side wall of the upper housing portion 21 in the preparation of this part in a plastic molding with molded, for example. This would simplify the production lot.

Even in such a case, of course, must also be an electrically accessible approach or extension 3o be provided on the antenna 2o to allow a connection with the circuit 16, the UHF transmitter 18 - regardless of whether the printed circuit board 2 with its components 4 - should be placed 16 (18) now in the lower part of housing 1 or housing upper part 21st Suitably, this 4o provided on the circuit board 19 of the circuit 16 a correspondingly formed, as flexible as possible, counter contact, the 27 occurs in a closed housing 1, 21 with the lug 30 of the decorative strip in contact-making contact or is but firmly soldered to the approach 3o.

Instead of a metal strip 27, of course, could be laterally arranged in the front wall 32 of the upper housing portion 21 and is injected or molded, a metal rod or wire in a side wall 31 or.

4 shows a further embodiment of the invention is shown. In the heating cost distributor according to this illustration, the antenna 2o than along an edge 36 of the printed circuit board 2 of the device guided conductor track 37 is formed, which is electrically connected with its lower end 38 to the output 4o of the circuit arrangement 16 of the UHF-transmitter 18, the (16) disposed adjacent to its board 19th This embodiment has the advantage that the conductor track 37, which forms the antenna 2o, together with the remaining conductor tracks of the printed board 2 in one and the same operation can be formed without additional overhead.

The antenna 2o forming interconnect 37 is shown hatched in Figure 4 for clarity. This conductor 37 may be located on the back of the printed circuit board 2, of course, since there for switching the remaining conductor tracks are provided ungsnetzwerk the heat cost allocator.

5 shows a modification of the embodiment of the invention is shown in FIG. 4 Instead of printed circuit track 37 as an antenna 2o according to Figure 4, here a U-shaped Drahbügel 42 is provided with its two bent ends 43 and 44 once (43) near the lower disposed circuitry 16 of the UHF transmitter 18 on the printed circuit board 2 is mounted and electrically connected to the output 4o there (16), while the upper bent end 44 insulated, soldered, for example on a piece of blind conductor 46 and is supported thereby.

2o This arrangement of antenna has the advantage that the shaft 47 of the wire bracket 42 can be held by the heating element by appropriate configuration of the bent ends 43, 44 remote from the printed circuit board 2 and is lifted more. This is a way to reduce the attenuation of the antenna is given 2o. Moreover, with such an arrangement saves space connected as possibly a smaller printed circuit board can find 2 use.

In all previously heschriebenen embodiments of the invention, the antenna 2o forming member 17, 27, 37, 42 electrically one-ends to the output 4o the circuitry 16 of the UHF transmitter 18 is connected both electrically and mechanically. The other end 24, 28, 39, 44 of the element 17, 27, 37, 42 will remain the responsibility each electrically isolated from the circuit of the printed circuit board 2 and of mass, ie electric or high frequency technically "open".