TR201513699A2 - A GPS-ACTIVE ANTENNA SYSTEM WITH FAULT DETECTION - Google Patents

Abstract

SUMMARY OF THE INVENTION The present invention provides an antenna using a switching power supply (2), capable of performing fault detection of the GPS module (3) and / or the active antenna (4) located thereon by comparing the duty cycles enabling the switching power supply (2) to be driven by a control unit (5). system (1).

Description

DESCRIPTION A GPS ACTIVE ANTENNA SYSTEM WITH FAULT DETECTION Technical Area This invention is based on switching mode power supply, SMPS. GPS on it by taking advantage of the duty cycle that allows it to be driven An antenna system that enables fault detection of the module and active antenna. It is related to. Prior Art With the widespread use of consumer electronics and smart devices, with the help of electromagnetic waves such as communication systems and satellite positioning. The usage areas of devices that transfer data and power are also increasing. Like this technologies, consumer electronics as well as automotive, transportation and all other air, land, sea vehicles, toys, military applications, agricultural equipment and so on. It has also been widely used in the fields.

It is determined that the systems that transfer data and power are fully functional. various systems according to the place of use, purpose, design and function of the systems. is of utmost importance. system function in many industrial applications. It is vital to monitor and diagnose faults.

In the state of the art, in systems where electromagnetic waves are used, whether the antennas that can be used on the receiver or transmitter are functioning properly. raw signal directly at the output of the receiver circuit to check that it does not see is interpreted. Function of the entire system in the absence of a significant signal It is understood that it is not seen or the signal level is insufficient. However, this In this case, it is determined whether the source of the problem is the antenna itself. not possible.

In a method in the state of the art, systems with active antennas The power drawn by the antenna is measured by measuring the current on the feed line to the antenna. The function of the antenna is checked by calculation. In another method, the antenna physical presence of the antenna and/or short circuit - open circuit by measuring its impedance control can be made. The impedance of said current or antenna. Additional electronic components required for open circuit voltage measurements such as increases the cost of the system. In addition to the cost burden, the added components cause electromagnetic noise or various compatibility issues. may result in significant design change requirements in the system. can open.

Chinese patent number CN201489075 in the state of the art In the method suggested in the document, the GPS module of the active antenna The antenna function is controlled by measuring the current from the supply output.

Using the necessary additional components for current measurement over the supply output increases the cost of the system. Application with the patent document in question Among the subject invention, in terms of measuring power consumed by the GPS module, there is difference. In the reference invention, the power management of the GPS module Antenna function is detected via In the method described in the document, for the detection of antenna function, The gain difference between the signal level and the active amplifier is used.

Between the patent document in question and the invention that is the subject of the application, the GPS module difference in antenna function detection via power management are available.

Chinese patent number CN102967793, which is in the state of the art In the method suggested in the document, it is active when the antenna is energized. Open circuit voltage control is recommended for the control of the antenna's function. PROMISE In the patent document in question, the power consumption of the module and the function of the antenna are fulfilled. It is determined whether it has been delivered or not. If the subject of the application is the invention, GPS Antenna function is determined through the power management of the module.

In current applications, the antenna is usually measured by measuring the open circuit voltage. The power it draws is measured and it is determined whether the antenna performs its function or not. is detected. In current applications, power management of the GPS module An application for detecting the function of the antenna via does not exist.

Objectives of the Invention The aim of this invention is to prevent the failure of the antenna without measuring the open circuit voltage. to realize an antenna system that can detect

The other purpose of this invention is to provide antenna without the need for additional electronic components. It is to realize an antenna system that can control the working state.

Another object of this invention is that even in low antenna gain An antenna system that can detect the physical presence and operating status of the antenna. is to perform.

Brief Description of the Invention A switching power supply (switch mode power) that supplies power to the system. supply, SMPS) by making sense of the duty cycle that drives It allows to detect the working status of the GPS module and active antenna. It is an antenna system.

Detailed Description of the Invention An antenna system realized to achieve the purpose of this invention is presented in the attached figures. shown and these figures; Figure 1. A schematic view of an antenna system.

The parts in the figures are numbered one by one and the corresponding numbers are given below.

antenna system Switched power supply GPS module active antenna control unit circuit breaker Even when the antenna gain is low, the physical presence of the antenna and Antenna that can detect the working status, preferably used in motor vehicles at least one switching power supply (2), by calculating the distance between the satellite or satellites, at least one GPS module (3), by receiving global positioning message signals from a satellite or satellites at least one active antenna (4) transmitting to the GPS module (3), generating a control signal allowing the switching power supply (2) to be driven, A feedback is provided by the switching power supply (2) measuring the output voltage. the duty cycle of the control signal for voltage adjustment by taking includes at least one control unit (5) that changes the

In the antenna system (1) in an embodiment of the invention, at least one switched power source (2) (SMPS - Switch Mode Power Supply), at least one GPS module (3), at least at least one active antenna (4) and at least one control unit (5).

The switching power supply (2) supplies power to the system. switched power The source (2) preferably has a voltage regulator. Control unit (5) driving the switched-mode power supply (2) (appropriate switching necessary control for the production of the necessary voltage for the system generates the Control Signal. In the preferred embodiment of the invention control signal pulse width modulation (PWM, Pulse Width Modulation) is created by doing. The control unit (5) is connected to the switch-mode power supply (2). It receives a feedback (FB) by measuring the output voltage. Control control unit (5) for voltage regulation It is adapted to change the duty cycle of the sign.

The control unit (5) is switched by the control signal with the appropriate duty cycle adapted to drive the power supply (2). Thus, the antenna system (1) needs The voltage it hears is independent of the amount of load in the antenna system (l). It can be supplied from the switched power supply (2) output.

The GPS module (3) in the antenna system (1) is a global positioning system. module. The GPS module (3) calculates the distance between the satellites and the antenna. determines the instantaneous position of the system (1). If the active antenna (4) is a satellite or by receiving the global positioning message signals from the satellites to the GPS module. (3) transmits.

In other words, GPS when the GPS module (3) in the antenna system (l) is disabled. While the module (3) is not energized, the control signal produced by the control unit (5) the duty cycle value (Dl) is determined by pre-measurement.

When the GPS module (3) in the antenna system (l) is active, in other words, GPS module (3) is energized, but the active antenna (4) is connected to the GPS module (3) duty cycle value of the control signal produced by the control unit (5) when it is not (DZ) is determined by pre-measurement.

When the GPS module (3) in the antenna system (l) is active and the active antenna (4) is GPS function of the control signal produced by the control unit (5) when connected to the module (3). cycle value (D3) is determined by pre-measurement.

While the antenna system (1) is operating, the control signal produced by the control unit (5) cycle value with pre-measured (Dl), (D2) and (D3) values. compares. The value of the control signal produced by the control unit (5), It varies according to the output voltage produced by the switching power supply (2).

While determining the (Dl), (D2) and (D3) values, the switching power supply (2) the output voltage it produces and the control signal produced by the control unit (5). values are compared.

The duty cycle value of the control signal generated by the control unit (5), antenna produced by the control unit (5) when the GPS module (3) in the system (l) is disabled. GPS if the control signal is equal to the pre-measured duty cycle value (Dl) module (3) does not consume power, so it does not perform its function properly, is found to be defective.

The duty cycle value of the control signal generated by the control unit (5), antenna When the GPS module (3) in the system (l) is active, but the active antenna (4) is the control signal produced by the control unit (5) when it is not connected to the module (3). If the pre-measured duty cycle value is equal to (D2), the GPS module (3) functions properly, but the active antenna (4) does not consume power. It is determined that it does not perform properly and is defective.

The duty cycle value of the control signal generated by the control unit (5), antenna When the GPS module (3) in the system (l) is active and the active antenna (4) is connected to the GPS module (3) pre-measured the control signal produced by the control unit (5) when connected. If the duty cycle value is equal to (D3), the GPS module (3) does not consume power. therefore, it is determined that it does not perform its function properly and is defective.

In another embodiment of the invention, a control unit (5) can be controlled the key GPS module (3) and/or the active antenna connected to the GPS module (3). (4) There is at least one circuit breaker (6) that can cut the outgoing energy. circuit breaker (6) a mechanical switch that can be controlled electronically e.g. relay, active half a switch with conductive electronic components such as a transistor, IGBT, or vacuum tube it could be. The circuit breaker (6) is not limited to the examples given. find this (Dl), (DZ) and (D3) values are not measured beforehand in the GPS application. The energy going to the active antenna (4) connected to the GPS module (3) and/or the GPS module (3) (D1), (DZ) and (D3) values are measured by cutting.

The control unit (5) is connected to the active antenna connected to the GPS module (3) of the circuit breaker (6). (4) gives a command to cut the outgoing energy. Behind the control unit (5) the duty cycle value (DZ) of the control signal it produces and the said active antenna. (4) the duty cycle value of the control signal before cutting the outgoing power (D3) is compared by the control unit (5). If the values are equal, the active antenna (4) it does not consume power, so it does not perform its function properly, it is defective is detected. If the values are different, it means that the active antenna (4) consumes power. It is determined that it performs its function properly and is not defective.

The control unit (5) only controls the power to the GPS module (3) of the circuit breaker (6). commands to interrupt. The control produced by the control unit (5) with the duty cycle value (Dl) of the sign to the said GPS module (3) The duty cycle value of the control signal (D3) before de-energizing the control The unit is compared by (5). If the values are equal, the power of the GPS module (3) It is determined that it does not consume its function properly, therefore it is defective. is being done. If the values are different, it is because it consumes power to the GPS module (3). It is determined that it performs its function properly and is not defective.

The control unit (5) is connected to the active antenna connected to the GPS module (3) of the circuit breaker (6). (4) adapted to cut the outgoing energy in case of failure. Control unit (5), with the duty cycle value (D2) of the control signal it produces to the said active antenna. (4) the duty cycle value of the control signal (D3) before cutting off the outgoing power. to compare and if the mentioned values are equal, the active antenna (4) is faulty. adapted to detect

The control unit (5) ensures that the circuit breaker (6) only supplies the GPS module (3). the control signal produced by the control unit (5), which commands the the energy going to the said GPS module (3) with the duty cycle value (Dl). compare the duty cycle value (D3) of the control signal before cutting, if the mentioned values are equal, to detect that the GPS module (3) is faulty. has been adapted.

The control unit (5), the duty cycle value of the control signal, the GPS module (3) pre-measured control signal produced by the control unit (5) when disabled. compare with the duty cycle value (Dl), when said values are equal It is adapted to detect when the GPS module (3) is faulty.

The control unit (5), the duty cycle value of the control signal, the GPS module (3) control when active but active antenna (4) not connected to GPS module (3) pre-measured duty cycle value of the control signal produced by the unit (5) Comparing with (D2), when the mentioned values are equal, the GPS module (3) to detect that it is working properly but the active antenna (4) is faulty. has been adapted.

As a result of the comparison made in the applications of the invention, the GPS If a fault is detected in the module (3) or the active antenna (4), the control unit (5) generates a written or visual warning signal.

Claims (8)

REQUESTS 1. In its most basic form used in motor vehicles, in which fault detection in a GPS module (3) and/or an active antenna (4) can be made, at least one switched power supply (2) is the most efficient way to determine the instantaneous position by measuring the distance between it and satellites or satellites. an active antenna connected to the GPS module (3) and/or the GPS module (3), comprising at least one active antenna (4) that receives the global positioning message signals from the satellite or satellites (3) and transmits them to the GPS module (3). (4) at least one circuit breaker (6) that can cut off the outgoing energy, to command the circuit breaker (6) to cut the energy to the active antenna (4) connected to the GPS module (3), with the duty cycle value (DZ) of the control signal it produces. An antenna system characterized by at least one control unit (5) adapted to compare the duty cycle value (D3) of the control signal before cutting off the energy to said active antenna (4), and to detect that the active antenna (4) is faulty if said values are equal. (one). 2. To command the circuit breaker (6) to cut the power to the GPS module (3) only, to compare the duty cycle value (Dl) of the control signal it produces with the duty cycle value (D3) of the control signal before it cuts off the power to the said GPS module (3), An antenna system as in Claim 1, characterized by a control unit (5) adapted to detect a malfunction of the GPS module (3) if said values are equal. 3. An antenna system (1) as in Claim 1, characterized by a circuit breaker (6) which can be an electronically controllable mechanical switch or an active semiconductor electronic component switch or a vacuum tube. 4. Claim 1, characterized by at least one control unit (5) that produces a control signal that enables the drive of the switching power supply (2), and changes the duty cycle of the control signal for voltage adjustment by receiving a feedback by measuring the output voltage of the switching power supply (2). An antenna system as in (1). 5. In its most basic form of fault finding in a GPS module (3) and/or an active antenna (4), at least one switched power supply (2) is a switched-mode power supply that produces a control signal that enables the switching power supply (2) to be driven. (2) at least one control unit (5) that changes the duty cycle of the control signal for voltage adjustment by measuring the output voltage, at least one GPS module (3) that provides the determination of the instant position by measuring the distance between the satellite or satellites, satellite or The pre-measured duty cycle value of the control signal generated by the control unit (5) when the GPS module (3) is deactivated, which includes at least one active antenna (4) receiving the global positioning message signals from the satellites and transmitting them to the GPS module (3). Dl), a network characterized by a control unit (5) adapted to detect that the GPS module (3) is faulty when the said values are equal. antenna system (1). 6. Comparing the duty cycle value of the control signal with the pre-measured duty cycle value (D2) of the control signal produced when the GPS module (3) is active but the active antenna (4) is not connected to the GPS inodule (3) is to compare the duty cycle value (D2) of the GPS inodule (3 ) an antenna system (1) such as Istem Siteki, characterized by a control unit (5) adapted to detect that the active antenna (4) is functioning properly but the active antenna (4) is faulty. 7. An antenna as in 1 or 57, characterized by a control unit (5) that generates a written or visual warning signal if a fault is detected in the active antenna (4) 8. An antenna system (1) as in any of 2 or Siten, characterized by a control unit (5) that generates a written or visual warning signal if a malfunction is detected in the GPS module (3).