JPH08186545A - Self-diagnostic system for radio equipment dedicated to reception - Google Patents

Abstract

PURPOSE: To diagnose all the functions of radio equipment dedicated to reception while including a reception antenna by transmitting data for test at a weak level and investigating the result of receiving these data. CONSTITUTION: A data control circuit 33 transmits the data for test to a modulating circuit 34 at every 30 minutes, the modulating circuit 34 modulates the data, and a transmitting circuit 35 transmits a radio wave, on which the data for modulation test are put, from a transmission antenna 4. Radio equipment 1 dedicated to reception receives the radio wave through a reception antenna 2 and a power measuring circuit 31 measures the power of the received radio wave and transmits the measured data to the data control circuit 33. The radio equipment 1 dedicated to reception sends the received data to a demodulating circuit 32 and demodulates data there and the demodulating circuit 32 transmits the demodulated data to the data control circuit 33. The data control circuit 33 checks the presence/absence of a remarkable power drop from the measured data of the power measuring circuit 31 and when there is the power drop, PW.ALM is set to diagnostic result report data so that it can be reported through an interface circuit 36 to an output line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-diagnosis system for a reception-only radio device, and more particularly to a self-diagnosis system for a reception-only radio device capable of diagnosing all functions of the reception-only radio device.

[0002]

2. Description of the Related Art As an example of a conventional technique of this kind, "Control channel fault detection system for radio telephone apparatus" described in Japanese Patent Publication No. 60-218218 is cited. In a radiotelephone device having a channel for controlling a call from the device, means for measuring an interval between signals received by a channel receiver for controlling the call, and a received signal to be measured by the measuring means are predetermined. A test transmitter that sends out a calling signal when the calling signal is not detected within a predetermined time interval, and a channel that controls this calling when the calling signal is not detected in a time longer than the predetermined time interval. The test transmitter is installed near the channel receiver, and the reception interval at a predetermined time and It is self-detecting channel failure by detection of the call signal.

[0003]

In this conventional control channel failure detection method for a radiotelephone device, it is necessary to install a test transmitter having a channel for controlling a call from a mobile station near the channel receiver. Therefore, the introduction of this method is not only costly, but there is a problem that it is necessary to apply for a license to install the transmitter.

Further, since the channel failure is detected only by looking at the reception interval of the signal in the channel receiver and the presence / absence of the reception, the failure of the deterioration of the receiving ability due to the failure of the receiving antenna, for example, becomes impossible until the signal cannot be received. There was a problem that it was not discovered.

Further, since the failure diagnosis is based on the presence / absence of a received signal, there is a problem that the failure occurrence point cannot be specified when the channel receiver fails.

An object of the present invention is to transmit a weak level of test data, check a result of receiving the test data, and diagnose all functions of the receive-only radio apparatus including a receive antenna. The purpose is to provide a self-diagnosis method.

[0007]

According to the present invention, a reception-only radio apparatus having a reception antenna and a self-diagnosis apparatus for transmitting a test data signal to the reception-dedicated radio apparatus to perform self-diagnosis thereof. The self-diagnosis device includes a transmission antenna, a power measurement circuit that measures the output power of the reception-only radio device that receives the test data signal of a predetermined level transmitted from the transmission antenna through the reception antenna, and A data control circuit that monitors the power level from the power measurement circuit, a modulation circuit that modulates the test data created by this data control circuit, and a modulation signal from this modulation circuit as the test data signal at the predetermined level. The transmission circuit for transmitting from the transmission antenna and the diagnostic result notification data edited by the data control circuit are output. And an interface circuit for outputting to the power measurement circuit, the data control circuit edits the diagnostic result notification data indicating a power decrease and outputs the data to the interface circuit when the measurement result of the power measurement circuit does not reach a predetermined level. A self-diagnosis method for a reception-only wireless device is obtained.

Further, the self-diagnosis device comprises a demodulation circuit for demodulating a signal received by the reception-only radio device, and the data control circuit for monitoring the presence or absence of a demodulation signal from the demodulation circuit, for a predetermined time. When a demodulation signal is not output from within the demodulation circuit, the data control circuit edits the diagnostic result notification data indicating reception failure and outputs the edited diagnostic result notification data to the interface circuit. can get.

Further, when the demodulated data from the demodulation circuit is judged to be the test data, the data control circuit checks whether or not there is an abnormality in the data content, and if there is an abnormality in the data content, a diagnosis indicating a demodulation failure is made. A self-diagnosis method for a receive-only wireless device, characterized in that result notification data is edited and output to the interface circuit.

[0010]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a system block diagram showing an embodiment of a self-diagnosis system for a reception-only radio apparatus according to the present invention.
(A) And (b) is a figure which shows an example of the format of the test data and diagnostic result notification data in a present Example, respectively.

Referring to FIG. 1, the system of the present embodiment comprises a reception-only radio apparatus 1 having a reception antenna 2, and a self-diagnosis apparatus for transmitting test data to the reception-dedicated radio apparatus 1 for self-diagnosis. 3 and 3.

Self-diagnostic device 3 having transmitting antenna 4
Is a power measurement circuit 31 that measures the power of the output of the reception-only wireless device 1 that receives the weak test data signal transmitted from the transmission antenna 4 through the reception antenna 2.
A demodulation circuit 32 that demodulates the signal received by the reception-only radio apparatus 1, a data control circuit 33 that monitors the power level from the power measurement circuit 31 and the presence or absence of a demodulation signal from the demodulation circuit 32, and data. A modulation circuit 34 for modulating the test data signal created by the control circuit 33, a transmission circuit 35 for transmitting the modulation signal from the modulation circuit 34 from the transmission antenna 4 at a predetermined weak level, and a diagnosis edited by the data control circuit 33. An interface circuit 36 for outputting the result notification data to the output line.

Here, as shown in FIG. 2A, the test data includes SYN indicating synchronization, STX indicating the start of text, test data (TST • DATA), and ETX indicating the end of text. , CR indicating error check
It is composed of C and.

As shown in FIG. 2 (b), the diagnostic result notification data includes SYN, STX, PW.ALM. DM / AL indicating an error in received data
M, RC / ALM indicating reception failure of the reception antenna or the reception-only radio apparatus, ETX, and CRC.

Next, the operation of this embodiment will be described with reference to FIG.

In the self-diagnosis device 3, the data control circuit 33
2 sends the test data shown in FIG. 2A to the modulation circuit 34 at regular intervals, for example, every 30 minutes, and the modulation circuit 3
4 modulates this test data and sends it to the transmission circuit 35.

The transmitting circuit 35 transmits the modulated signal from the transmitting antenna 4 by mounting the modulated test data on an electric wave of a predetermined level (here, a weak level which does not require acquisition of a transmission license).

The reception-only radio apparatus 1 receives the radio wave from the transmission antenna 4 through the reception antenna 2, and the power measuring circuit 31 measures the power of the reception radio wave of the reception-only radio apparatus 1 and sends the measurement data to the data control circuit 33. send. Further, the reception-only radio apparatus 1 sends the received data to the demodulation circuit 32 for demodulation, and the demodulation circuit 32 sends the demodulated data to the data control circuit 33.

The data control circuit 33 compares the demodulated data from the demodulation circuit 32 with the test data input to the modulation circuit 34, and the received data of the reception-only radio apparatus 1 is the test data or the normal data. Check if there is. Then, when the data is determined to be test data, it is checked whether or not the data content is abnormal. Here, if there is an abnormality in the data contents such as garbled data, RC / ALM is set in the diagnostic result notification data shown in FIG. 2B and the output line is notified through the interface circuit 36.

Further, the data control circuit 33 checks from the measurement data of the power measuring circuit 31 whether or not there is a significant power decrease, and if there is a power decrease, PW / ALM is set in the diagnostic result notification data shown in FIG. 2B. Then, the output line is notified through the interface circuit 36.

Further, the data control circuit 33 checks whether the demodulation data is output from the demodulation circuit 32 for a certain period of time, for example, 60 minutes, and if the demodulation data is not output, the diagnostic result notification shown in FIG. RC for data
Set ALM and notify the output line through the interface circuit 36.

When the demodulated data from the demodulation circuit 32 is not the test data, the data control circuit 33 determines that the reception-only radio apparatus 1 has received the regular data, and the demodulation is performed without performing any of the above checks. The data is output to the output line through the interface circuit 36.

[0024]

As described above, the present invention comprises a reception-only radio apparatus having a reception antenna, and a self-diagnosis apparatus which transmits a test data signal to the reception-dedicated radio apparatus to perform self-diagnosis. , The self-diagnostic device has a transmitting antenna, a power measuring circuit for measuring the output power of a reception-only radio device which receives a test data signal of a predetermined level transmitted from the transmitting antenna through the receiving antenna, and a power measuring circuit from the power measuring circuit. A data control circuit that monitors the power level, a modulation circuit that modulates the test data created by this data control circuit, and a modulation signal from this modulation circuit that is transmitted as a test data signal of a predetermined level from the transmission antenna Interface circuit that outputs the diagnostic result notification data edited by the circuit and the data control circuit to the output line. By providing bets, it has the effect of being able to self-diagnose all functions of receive-only radio apparatus including a receiving antenna.

[Brief description of drawings]

FIG. 1 is a system block diagram showing an embodiment of a self-diagnosis method of a reception-only radio apparatus according to the present invention.

2A and 2B are diagrams showing an example of formats of test data and diagnostic result notification data in the present embodiment, respectively.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 reception-only radio device 2 reception antenna 3 self-diagnosis device 4 transmission antenna 31 power measurement circuit 32 demodulation circuit 33 data control circuit 34 modulation circuit 35 transmission circuit 36 interface circuit

Claims (3)

[Claims] 1. A reception-only radio apparatus having a reception antenna, and a self-diagnosis apparatus that transmits a test data signal to the reception-only radio apparatus to perform self-diagnosis thereof.
The self-diagnosis device includes a transmission antenna, a power measurement circuit that measures the output power of the reception-only radio device that receives the test data signal of a predetermined level transmitted from the transmission antenna through the reception antenna, and the power measurement circuit. A data control circuit that monitors the power level from the circuit, a modulation circuit that modulates the test data created by this data control circuit, and a modulation signal from this modulation circuit that is transmitted as the test data signal of the predetermined level. The data control includes a transmission circuit for transmitting from an antenna and an interface circuit for outputting diagnostic result notification data edited by the data control circuit to an output line, and the data control when the measurement result of the power measurement circuit does not reach a predetermined level. The circuit edits the diagnostic result notification data indicating the power reduction and Self-diagnosis system of the received dedicated radio system and outputting the interface circuit. 2. The self-diagnosis apparatus comprises a demodulation circuit for demodulating a signal received by the reception-only radio apparatus, and the data control circuit for monitoring the presence or absence of a demodulation signal from the demodulation circuit, and the self-diagnosis apparatus has a predetermined time. 2. The reception-only radio apparatus according to claim 1, wherein when no demodulation signal is output from the demodulation circuit, the data control circuit edits the diagnostic result notification data indicating reception failure and outputs the data to the interface circuit. Self-diagnosis method. 3. The data control circuit, when the demodulated data from the demodulation circuit is judged to be the test data, checks whether or not there is an abnormality in the data content, and if there is an abnormality in the data content, a diagnosis indicating a demodulation failure is made. 2. The self-diagnosis method for a reception-only radio apparatus according to claim 1, wherein the result notification data is edited and output to the interface circuit.