The invention relates to an improvement in a power ring device, such as would be used in a military vehicle or non-military vehicle, for supplying electrical power to various electrical consuming devices incorporated within the vehicle. Specifically, the power ring device constructed in accordance with the present invention includes an errors recognition feature with a mechanism for compensating for any electrical error occurring in the power ring device.
It is known that to supply devices with electrical energy, as individual components and consumers of electrical power in a vehicle such as a military vehicle, a so-called “power ring” is frequently employed. A power ring is a ring conductor that transports output energy and that connects each electrically consuming device with a power generator, which is different from star-shaped electrical connections that can be employed to connect each electricity consuming device (also referred to as an “electrical consumer”) with a generator.
A short circuit in the ring conductor of the conventional power ring has the disadvantage that all electrical consumers connected to the power ring are no longer supplied with electrical power. Consequently, a repair shop is then sought so that the error causing the short circuit in the power ring can be addressed and fixed.
Military vehicles, however, have special requirements and it is an undesirable shortcoming that the internal electrical current supply for all connected devices should fail due to a simple short circuit. Furthermore, repair shops are not always readily available in places where military vehicles may travel. To address this problem, known embodiments of the prior art provide, for example, division of the power ring into individual segments by employing a power-ring controller. Thus, energy consuming devices supplied by the power ring with electrical power are connected to different segments of the power ring. When a short circuit occurs in one segment, only those devices that are connected to this one malfunctioning segment are impaired and fail, while those devices connected to the other isolated segments of the power ring are not affected by the short circuit and continue to be supplied with electrical energy and remain functioning.
In DE 199 16 452 C2 to Joehnke et al., a device is disclosed for a power ring employing a ring conductor in a military vehicle, in order to supply electricity to various devices. This prior art power ring device includes several controllers functioning as oversight and switch devices that are connected along, and to, the ring conductor. The prior art power ring device disclosed by Joehnke et al. also includes additional component devices for the oversight and control of the ring conductor, wherein security is adjusted by means of a number of controlled switches so that ring conductor segments to the left or right of a pick-up controller can be closed or shut off.
After a failure caused by a short circuit in the ring conductor, for example, the power ring is subsequently completely shut off. In other words, a short in any segment of the ring conductor causes the entire power ring to cease conducting power. Subsequently, by means of successive switching, the failing conductor segment is identified and decoupled from the power ring. However, this technique of isolating the failed conductor segment, by systematically testing each segment while the ring conductor is unable to conduct electricity has disadvantages. In particular, it is a disadvantage that the power ring, in a case of electrical failure (i.e., short circuit), must be subsequently shut off completely, thereby interrupting the energy supply to all of the connected electrically consuming devices. In addition, the power ring device disclosed by Joehnke et al. cannot readily locate failures that are sporadic failures. The Joehnke et al. power ring can only localize an electrical failure that persists for a given period of time.
An object of the present invention is to improve failure recognition of a ring conductor element of a power ring.
The present invention endeavors to overcome the limitations of the prior art power ring device. More particularly, the present invention solves the problem of detecting and compensating for a limited electrical failure of a ring conductor element of a power ring by measuring the in and out flowing electrical current of each ring conductor element or segment in the power ring. By differentiating the measured electrical current values, the electrical failure of the ring conduction element can be immediately recognized when the differential current is not equal to zero, which corresponds to the condition that there is a short circuit.
One advantage of the present invention lies in that the previously experienced disadvantage of the prior art power ring, in which there is a long time period delay while the failed conductor segment is identified and isolated which requires successive powering up of the power ring after an electrical failure, can be avoided. In addition, the power ring device in accordance with the present invention is able to measure the electrical power consumption of the individual connected electrical energy consumers that are connected to the power ring.
Thus, in accordance with the present objectives, the present invention provides a first apparatus embodiment, specifically, a power ring device in a military vehicle for supplying electrical power to electrical consuming devices of the vehicle. The power ring device includes: (a) a ring conductor; (b) a plurality of controllers operating as control and switching devices, wherein each controller is connected to the ring conductor and each controller includes a first control unit; (c) a plurality of paired pick ups disposed on the ring conductor, wherein each pair of pick ups connects either an electrical consumer device or an electrical power supply to the ring conductor and to one of the plurality of controllers, wherein a first pair of pick ups of a first controller is connected to a first power supply; and (d) a plurality of current sensor signal lines connecting each control unit of the plurality of controllers so as to form a data connection between the controllers that supervise and control transmission of electrical power along the ring conductor. Each controller further comprises: i. a right side and a left side, and each controller includes a right sided switch element and a left sided switch element connected to the control unit and the ring conductor; and ii. a right sided current sensor and a left sided current sensor connected to the ring conductor, to the first control unit, and to the plurality of current sensor signal lines so that a first current value measured by the left sided current sensor of the first controller is transmitted as data to the first control unit of a second controller.
In accordance with a second apparatus embodiment of the present invention, the plurality of controllers operate together to provide an intelligent control unit for controlling the transmission of electrical power from the first power supply to a first current consumer connected by a second pair of pick ups of a second controller to the ring conductor, wherein the intelligent control unit operates to maintain stable transmission of electrical power to the first current consumer by isolating a short circuit or a power surge in the ring conductor.
In accordance with a third apparatus embodiment of the present invention, the control units of the plurality of controllers operate together as control nodes to provide an intelligent control unit for controlling the transmission of electrical power from the first power supply to a first current consumer connected by a second pair of pick ups of a second controller to the ring conductor, wherein the intelligent control unit operates to maintain stable transmission of electrical power to the first current consumer by isolating an electrical disturbance in the ring conductor, wherein the electrical disturbance is either a short circuit or a power surge.
In accordance with a fourth apparatus embodiment of the present invention, each first control unit provides a control node for an integrated intelligent control unit, and each first control unit comprises a device for voltage measurement and a device for conduction protection with status indication.
In accordance with a fifth apparatus embodiment of the present invention, the integrated intelligent control unit includes a master controller connected to send control signals to each first control unit.
In accordance with a sixth apparatus embodiment of the present invention, each first control unit comprises a device for voltage measurement and a device for conduction protection with status indication.
In accordance with a seventh apparatus embodiment of the present invention, each pick up controller includes one pair of pick ups forming a connection to the ring conductor and to a component selected from the group consisting of an electrical consumer, a power supply and the first power supply so that the right sided switch element is connected to the ring conductor to the right of the connection and the left sided switch element is connected to the ring conductor to the left of the connection.
In accordance with an eighth apparatus embodiment of the present invention, the right sided switch element is connected to the ring conductor between the right sided current sensor and the one pair of pick ups, and the left sided switch element is connected to the ring conductor between the left sided current sensor and the one pair of pick ups.
In accordance with a ninth apparatus embodiment of the present invention, the data connection connects the control nodes so that measured current values sensed by the right sided current sensors and the left sided current sensors are exchanged with adjacent control nodes.
In accordance with a tenth apparatus embodiment of the present invention, each first control unit is connected to receive a control signal from a higher order control device.
In accordance with an eleventh apparatus embodiment of the present invention, the right sided current sensor and the left sided current sensor of each pick up controller are disposed for measuring electrical current values in conducting lines of the ring conductor and the one pair of pick ups.
In accordance with the present objectives, the present invention provides a vehicle. The vehicle that includes: (A) a first power supply; (B) one or more electrical consuming devices; and (C) a power ring device connected to receive electrical power from the first power supply and connected to transmit electrical power to the one or more electrical consuming devices. The power ring device comprises: i. a ring conductor; ii. a plurality of controllers operating as control and switching devices, wherein each controller is connected to the ring conductor and each controller includes a first control unit; iii. a plurality of paired pick ups disposed on the ring conductor, wherein each pair of pick ups connects either an electrical consumer device or an electrical power supply to the ring conductor and to one of the plurality of controllers, wherein a first pair of pick ups of a first controller is connected to the first power supply; and iv.a plurality of current sensor signal lines connecting each control unit of the plurality of controllers so as to form a data connection between the controllers that supervise and control transmission of electrical power along the ring conductor. Each controller further comprises: a. a right side and a left side, and each controller includes a right sided switch element and a left sided switch element connected to the control unit and the ring conductor; and b. a right sided current sensor and a left sided current sensor connected to the ring conductor, to the first control unit, and to the plurality of current sensor signal lines so that a first current value measured by the left sided current sensor of the first controller is transmitted as data to the first control unit of a second controller.
In accordance with a thirteen embodiment of the present invention, the control units of the plurality of controllers operate together as control nodes to provide an intelligent control unit for controlling the transmission of electrical power from the first power supply to a first current consumer connected by a second pair of pick ups of a second controller to the ring conductor, wherein the intelligent control unit operates to maintain stable transmission of electrical power to the first current consumer by isolating an electrical disturbance in the ring conductor, wherein the electrical disturbance is either a short circuit or a power surge.
In accordance with a fourteenth embodiment of the present invention, each pick up controller includes one pair of pick ups forming a connection to the ring conductor and to a component selected from the group consisting of an electrical consumer, a power supply and the first power supply so that the right sided switch element is connected to the ring conductor to the right of the connection and the left sided switch element is connected to the ring conductor to the left of the connection.
In accordance with a fifteenth embodiment of the present invention, the integrated intelligent control unit includes a master controller connected to send control signals to each first control unit.
In accordance with a sixteenth embodiment of the present invention, the right sided switch element is connected to the ring conductor between the right sided current sensor and the one pair of pick ups, and the left sided switch element is connected to the ring conductor between the left sided current sensor and the one pair of pick ups.
In accordance with a seventeenth embodiment of the present invention, the right sided current sensor and the left sided current sensor of each pick up controller are disposed for measuring electrical current values in conducting lines of the ring conductor and the one pair of pick ups.
In accordance with an eighteenth embodiment of the present invention, each first control unit comprises a device for voltage measurement and a device for conduction protection with status indication.
In accordance with a nineteenth embodiment of the present invention, the twelfth embodiment is modified so that the vehicle is a military vehicle.
An illustrative example of the present invention is shown schematically in the drawings and is further described as follows. Further objects, features and advantages of the present invention will become apparent from the Detailed Description of the Illustrative Embodiments, which follows, when considered together with the attached drawings.
1. Pick-up Controller with Housing
2. Control Unit
3. Current Sensor at Side A
4. Current Sensor at Side B
5. Switching Element at Side A
6. Switching Element at Side B
7. Pick-up for Electrical Consumers, or a Power Supply (Plus and Minus)
8. Signal line for Failure Signals and Confirmation
9. Current Sensor Signal line for connecting Neighboring Pick-up Controller to Side A
10. Current Sensor Signal line for connecting Neighboring Pick-up Controller to Side B
11. Current Sensor Signal line for connecting Current Sensor at Side A
12. Current Sensor Signal line for connecting Current Sensor at Side B
13. Ring Conductor Discharge segment at Side A (Plus and Minus)
14. Ring Conductor Discharge segment at Side B (Plus and Minus)
The power ring apparatus of the present invention is described in
The current sensors 3 and 4 measure electrical current flowing within the pick up controller 1. Current sensor 3 measures electrical current flowing in conductor line 13 at the left side A of the controller 1, whereas current sensor 4 measures electrical current flowing in the conductor line 14 at the right side B of the controller 1. The measured current values as measured by current sensor 3 are transmitted as data (i.e., signal input) to the left side of the control unit 2 and to a neighboring pick up controller connected to the left side A of the pick up controller 1. The measured current values as measured by current sensor 4 are transmitted as data (i.e., signal input) to the right side of the control unit 2 and to a neighboring pick up controller connected to the right side B of the pick up controller 1.
For example, as shown in the power ring of
In accordance with the present invention, as illustrated in
Each pick up controller 1.1, 1.2 and 1.3 has the same structure, and operates in the same way, as the pick up controller shown in
As shown in
As mentioned,
As shown in
The pick up controller 1, as shown in
As evident from
Current surge on the pick up of a pick up controller connected to one of the consumers 102 or 103 connected to the lines 7.2 or 7.3, respectively, can also be recognized by employing a differentiation of current values measured by sensors 3 and 4 (See
In accordance with another embodiment of the present invention, as shown in
In accordance with the present invention, a power supply 100 can be either a conventional battery constructed for use in a vehicle, or the power supply could be an electric generator powered by the vehicle's engine. The electrical consumers 102, 103 can be any electrically powered system carried by a military or non-military vehicle, and may include, but is not limited to: internal lighting, external lighting (blinkers, headlights, flood lights), internal global positioning systems, guidance systems, weapons systems, communications systems, air conditioning systems, heating systems, ventilation systems, and the like.
While the present invention has been described with reference to certain preferred embodiments, one of ordinary skill in the art will recognize that additions, deletions, substitutions, modifications and improvements can be made while remaining within the spirit and scope of the present invention as defined by the appended claims.
Number | Date | Country | Kind |
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103 29 914.9 | Jul 2003 | DE | national |