CN113115028A - Rebroadcasting station signal monitoring system - Google Patents
Rebroadcasting station signal monitoring system Download PDFInfo
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- CN113115028A CN113115028A CN202110314765.2A CN202110314765A CN113115028A CN 113115028 A CN113115028 A CN 113115028A CN 202110314765 A CN202110314765 A CN 202110314765A CN 113115028 A CN113115028 A CN 113115028A
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Abstract
The invention relates to a signal monitoring system of a relay station, which comprises a signal receiving circuit, a control circuit, a signal tuning circuit and a signal demodulation circuit, wherein the signal receiving circuit is electrically connected with the signal demodulation circuit; the signal receiving circuit is used for receiving frequency modulation and amplitude modulation signals, the control circuit is used for monitoring the frequency modulation and amplitude modulation signals, the signal tuning circuit is used for receiving ground digital television signals, and the control circuit is further used for enabling the signal demodulation circuit to demodulate the ground digital television signals and output transport streams. The signal monitoring system of the relay station disclosed by the invention realizes automatic monitoring of the signal index of the relay station.
Description
Technical Field
The invention relates to the technical field of relay station monitoring, in particular to a relay station signal monitoring system.
Background
With the development of science and technology, a plurality of high-tech elements are integrated into a broadcasting and television broadcasting station, and a transmitter is qualitatively changed from an electronic tube to solid state and integration, from analog to digital; the backup design and the automatic control protection of the transmitter ensure that the safe broadcasting work is more ensured; the improvement of the broadcasting control environment greatly improves the reliability, stability and technical indexes of operation, so that various broadcasting monitoring systems of the broadcasting stations gradually enter the field, but are designed aiming at the station requirement of people on duty, and the automatic monitoring of the signal indexes of the broadcasting stations cannot be realized.
Disclosure of Invention
In view of the above, there is a need to provide a signal monitoring system for a relay station, which is used to solve the problem in the prior art that the automatic monitoring of the signal index of the relay station cannot be realized.
The invention provides a signal monitoring system of a relay station, which comprises a signal receiving circuit, a control circuit, a signal tuning circuit and a signal demodulation circuit, wherein the signal receiving circuit is electrically connected with the signal demodulation circuit;
the signal receiving circuit is used for receiving frequency modulation and amplitude modulation signals, the control circuit is used for monitoring the frequency modulation and amplitude modulation signals, the signal tuning circuit is used for receiving ground digital television signals, and the control circuit is further used for enabling the signal demodulation circuit to demodulate the ground digital television signals and output transport streams.
Further, the signal receiving circuit comprises an fm and am receiving chip IC6, a resistor R92, a resistor R93, a resistor R98, a resistor R100, a capacitor C135, a capacitor C137-C141, a capacitor C144, an inductor L22, an inductor L23, an inductor L25, a voltage regulator D3 and a connector RF2, wherein a 7 pin of the fm and am receiving chip IC6 is connected to one end of the resistor R92, the other end of the resistor R92 is connected to one end of the capacitor C135, the other end of the capacitor C135 is connected to one end of the capacitor C141 through the capacitors C137, C138 and inductor L23, the other end of the capacitor C141 is connected to ground through the inductors L24 and L25, one end of the resistor R93 is connected between the capacitor C135 and the capacitor C137, the other end of the resistor R93 is connected to one end of the resistor R98, the other end of the resistor R98 is connected between the capacitor C137 and the capacitor C138, the resistor R100 and the inductor C23 are connected in parallel, the capacitor C144 is connected between the inductor L25 and one end of the inductor L599, the other end of the inductor L22 is connected with the connector RF2 through a capacitor C139 and a voltage regulator tube D3.
Furthermore, the signal receiving circuit further comprises capacitors C126, C127 and C134 and inductors L18, L19 and L21, wherein pins 3 and 4 of the fm and am receiving chip IC6 are respectively connected to two ends of the capacitor C127, pin 2 of the fm and am receiving chip IC6 is connected to one end of the capacitor C126, the other end of the capacitor C126 is connected to pin 4 of the fm and am receiving chip IC6 through an inductor L18, the other end of the capacitor C126 is connected to pin 5 of the fm and am receiving chip IC6, and pin 6 of the fm and am receiving chip IC6 is connected to the connector RF2 through an inductor L19, a capacitor C134, an inductor L21.
Furthermore, the control circuit comprises a master control chip M1, pins 42 and 44 of the master control chip M1 are respectively connected with pins 13 and 12 of the fm/am receiving chip IC6, and pins 1 to 6 of the master control chip M1 are connected with a first direct current power supply.
Further, the signal tuning circuit comprises a tuner IC1, inductors L3 to L7, capacitors C8 to C13, and a connector RF1, wherein pins 23 and 25 of the tuner IC1 are respectively connected to two ends of an inductor L5, pin 23 of the tuner IC1 is further connected to one end of an inductor L3, the other end of the inductor L3 is connected to pin 25 of the tuner IC1, the other end of the inductor L3 is further connected to one end of a capacitor C10, the other end of the capacitor C10 is connected to one end of an inductor L4, the other end of the inductor L4 is connected to one end of a capacitor C13, the other end of the capacitor C13 is connected to one end of an inductor L7, the other end of the inductor L7 is connected to one end of a capacitor C11, one end of the inductor L4 is connected to the other end of the capacitor C11 by a capacitor C9, and the other end of the capacitor C11 is connected to a connector RF1 by a capacitor C8.
Furthermore, the signal tuning circuit further comprises capacitors C4-C7 and inductors L1 and L2, pins 20 and 21 of the tuner IC1 are respectively connected to two ends of a capacitor C5, the capacitor C4 is connected in parallel with the capacitor C5, the pin 20 of the tuner IC1 is connected to a second direct-current power supply through an inductor L1, pins 11 and 12 of the tuner IC1 are respectively connected to two ends of a capacitor C6, the capacitor C6 is connected in parallel with the capacitor C7, and the pin 12 of the tuner IC1 is connected to the second direct-current power supply through an inductor L2.
Furthermore, the signal demodulation circuit comprises a demodulator IC2, a resistor R9, a resistor R10, a light emitting diode D2, capacitors C24 and C25, pins 6 and 7 of the demodulator IC2 are respectively connected with two ends of the resistor R9, a pin 7 of the demodulator IC2 is also connected with the ground through a resistor R10, the light emitting diode D2 is connected with the resistor R10 in parallel, and pins 43 and 44 of the demodulator IC2 are respectively connected with pins 14 and 13 of the tuner IC1 through a capacitor C24 and a capacitor C25.
Further, the relay station signal monitoring system further comprises a display circuit, the display circuit comprises a display interface J3, a capacitor C159 and a capacitor C160, 1 and 2 of the display interface J3 are both grounded through the capacitor C159, 40 pins of the display interface J3 are grounded through the capacitor C160, 3-10 pins of the display interface J3 are respectively connected with 1, 3, 5, 7, 9, 11, 13 and 15 pins of the main control chip M1, 12-19 pins of the display interface J3 are respectively connected with 17, 19, 23, 25, 27, 29, 31 and 33 pins of the main control chip M1, and 21-28 pins of the display interface J3 are respectively connected with 35, 37, 41, 43, 45, 47, 49 and 51 pins of the main control chip M1.
Further, the signal monitoring system of the relay station also comprises a communication circuit, the communication circuit comprises a communication chip U1A, pins 50-56 of the communication chip U1A are all grounded, and pins 68, 67, 66 and 62 of the communication chip U1A are respectively connected with pins 36, 38, 48 and 46 of the main control chip M1.
Further, the relay station signal monitoring system further comprises a network port circuit, the network port circuit comprises a network port chip U16, capacitors C183, C184, C186-C189 and inductors L30 and L31, pins 30 and 2 of the network port chip U16 are grounded through the capacitors C183 and C184 respectively, pins 19, 25 and 11 of the network port chip U16 are grounded through the capacitors C186-C188 respectively, the capacitor C188 is connected with the C189 in parallel, and pins 13 and 11 of the network port chip U16 are connected with a third direct-current power supply through the inductors L30 and L31.
Compared with the prior art, the invention has the beneficial effects that: receiving frequency and amplitude modulation signals through the signal receiving circuit, monitoring the frequency and amplitude modulation signals by the control circuit, receiving ground digital television signals by the signal tuning circuit, demodulating the ground digital television signals by the signal demodulating circuit by the control circuit, and outputting a transport stream; the automatic monitoring of the signal index of the broadcasting station is realized.
Drawings
Fig. 1 is a block diagram of a signal monitoring system of a relay station according to the present invention;
FIG. 2 is a schematic circuit diagram of a signal receiving circuit according to the present invention;
FIG. 3 is a schematic circuit diagram of a control circuit provided by the present invention;
FIG. 4 is a circuit schematic of a signal tuning circuit provided by the present invention;
FIG. 5 is a schematic circuit diagram of a signal demodulation circuit provided by the present invention;
FIG. 6 is a schematic circuit diagram of a display circuit according to the present invention;
FIG. 7 is a circuit schematic of a communication circuit provided by the present invention;
fig. 8 is a schematic circuit diagram of a network interface circuit provided by the present invention.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
Example 1
The embodiment of the invention provides a signal monitoring system for a relay station, which is a structural block diagram, and as shown in fig. 1, the system comprises a signal receiving circuit 1, a control circuit 2, a signal tuning circuit 3 and a signal demodulation circuit 4, wherein the signal receiving circuit 1 is electrically connected with the signal demodulation circuit 4, the signal tuning circuit 3 is electrically connected with the signal demodulation circuit 4, and both the signal receiving circuit 1 and the signal demodulation circuit 4 are electrically connected with the control circuit 2;
the signal receiving circuit 1 is configured to receive an fm/am signal, the control circuit 2 is configured to monitor the fm/am signal, the signal tuning circuit 3 is configured to receive a terrestrial digital television signal, and the control circuit 2 is further configured to enable the signal demodulating circuit 4 to demodulate the terrestrial digital television signal and output a transport stream.
It should be noted that, the frequency modulation and amplitude modulation signal is received by the signal receiving circuit, the control circuit monitors the frequency modulation and amplitude modulation signal, the signal tuning circuit receives the terrestrial digital television signal, and the control circuit enables the signal demodulation circuit to demodulate the terrestrial digital television signal and output a transport stream; the automatic monitoring of the signal indexes of the broadcasting station is realized, wherein the signal indexes comprise field intensity, signal-to-noise ratio and the like; when the rebroadcast signal is monitored to be abnormal, various electric control interfaces can be adopted to be connected with corresponding control objects for control, wherein the control objects comprise a transmitter system, an antenna feeder system and the like.
Preferably, the signal receiving circuit comprises an fm and am receiving chip IC6, a resistor R92, a resistor R93, a resistor R98, a resistor R100, a capacitor C135, a capacitor C137-C141, a capacitor C144, an inductor L22, an inductor L23, an inductor L25, a voltage regulator D3 and a connector RF2, wherein a 7 pin of the fm and am receiving chip IC6 is connected to one end of the resistor R92, the other end of the resistor R92 is connected to one end of the capacitor C135, the other end of the capacitor C135 is connected to one end of the capacitor C141 through the capacitors C137, C138 and inductor L23, the other end of the capacitor C141 is connected to ground through the inductors L24 and L25, one end of the resistor R93 is connected between the capacitor C135 and the capacitor C137, the other end of the resistor R93 is connected to one end of the resistor R98, the other end of the resistor R98 is connected between the capacitor C137 and the capacitor C138, the resistor R100 is connected in parallel with the inductor C23, the capacitor C144 is connected in parallel with one end of the inductor L22 and one end of the, the other end of the inductor L22 is connected with the connector RF2 through a capacitor C139 and a voltage regulator tube D3.
In one embodiment, the circuit schematic of the signal receiving circuit is shown in fig. 2; the signal of the fm receiving chip IC6 is SI4755, which is used to receive fm signals, so as to monitor the signal broadcasting condition, and in fig. 2, LOUT1 and ROUT1 output audio signals of left and right channels, respectively.
Preferably, the signal receiving circuit further includes capacitors C126, C127, C134 and inductors L18, L19, and L21, wherein pins 3 and 4 of the fm and am receiving chip IC6 are respectively connected to two ends of the capacitor C127, pin 2 of the fm and am receiving chip IC6 is connected to one end of the capacitor C126, the other end of the capacitor C126 is connected to pin 4 of the fm and am receiving chip IC6 through an inductor L18, the other end of the capacitor C126 is connected to pin 5 of the fm and am receiving chip IC6, and pin 6 of the fm and am receiving chip IC6 is connected to the connector RF2 through an inductor L19, a capacitor C134, an inductor L21.
Preferably, the control circuit includes a main control chip M1, pins 42 and 44 of the main control chip M1 are respectively connected to pins 13 and 12 of the fm/am receiving chip IC6, and pins 1 to 6 of the main control chip M1 are connected to a first dc power supply.
In one embodiment, the circuit schematic of the control circuit is as shown in fig. 3; the model of the master control chip M1 is XC7Z010CLG 400-1.
Preferably, the signal tuning circuit includes a tuner IC1, inductors L3 to L7, capacitors C8 to C13, and a connector RF1, pins 23 and 25 of the tuner IC1 are respectively connected to two ends of an inductor L5, pin 23 of the tuner IC1 is further connected to one end of an inductor L3, the other end of the inductor L3 is connected to pin 25 of the tuner IC1, the other end of the inductor L3 is further connected to one end of a capacitor C10, the other end of the capacitor C10 is connected to one end of an inductor L4, the other end of the inductor L4 is connected to one end of a capacitor C13, the other end of the capacitor C13 is connected to one end of an inductor L7, the other end of the inductor L7 is connected to one end of a capacitor C11, one end of the inductor L4 and the other end of the capacitor C11 are connected by a capacitor C9, and the other end of the capacitor C11 is connected to a connector RF1 by a capacitor C8.
In one embodiment, the signal tuning circuit is a schematic circuit diagram, as shown in fig. 4, the tuner IC1 is of type ATBM253 for receiving DTMB (terrestrial digital television) program signals.
Preferably, the signal tuning circuit further includes capacitors C4-C7 and inductors L1 and L2, pins 20 and 21 of the tuner IC1 are respectively connected to two ends of a capacitor C5, the capacitor C4 is connected in parallel with the capacitor C5, the pin 20 of the tuner IC1 is connected to a second dc power supply through an inductor L1, pins 11 and 12 of the tuner IC1 are respectively connected to two ends of a capacitor C6, the capacitor C6 is connected in parallel with the capacitor C7, and the pin 12 of the tuner IC1 is connected to the second dc power supply through an inductor L2.
Preferably, the signal demodulation circuit includes a demodulator IC2, a resistor R9, a resistor R10, a light emitting diode D2, capacitors C24 and C25, pins 6 and 7 of the demodulator IC2 are respectively connected to two ends of the resistor R9, pin 7 of the demodulator IC2 is further connected to ground through a resistor R10, the light emitting diode D2 is connected in parallel with the resistor R10, and pins 43 and 44 of the demodulator IC2 are respectively connected to pins 14 and 13 of the tuner IC1 through a capacitor C24 and a capacitor C25.
In a specific embodiment, as shown in fig. 5, the signal demodulation circuit is a schematic circuit diagram of the signal demodulation circuit, the model of the demodulator IC2 is ATBM8881, and is used for demodulating a DTMB signal and outputting a TS stream (transport stream), the signal demodulation circuit further includes capacitors C26 and C27, the pin 35 of the demodulator IC2 is grounded through a capacitor C26, and the capacitor 27 is connected in parallel with the capacitor C26.
Preferably, the relay station signal monitoring system further includes a display circuit, the display circuit includes a display interface J3, a capacitor C159, and a capacitor C160, 1 and 2 of the display interface J3 are both grounded through the capacitor C159, 40 pins of the display interface J3 are grounded through the capacitor C160, 3-10 pins of the display interface J3 are respectively connected to 1, 3, 5, 7, 9, 11, 13, and 15 pins of the main control chip M1, 12-19 pins of the display interface J3 are respectively connected to 17, 19, 23, 25, 27, 29, 31, and 33 pins of the main control chip M1, and 21-28 pins of the display interface J3 are respectively connected to 35, 37, 41, 43, 45, 47, 49, and 51 pins of the main control chip M1.
In one embodiment, the circuit schematic of the display circuit is as shown in fig. 6; the display interface J3 is a liquid crystal display interface.
Preferably, the relay station signal monitoring system further comprises a communication circuit, the communication circuit comprises a communication chip U1A, pins 50-56 of the communication chip U1A are all grounded, and pins 68, 67, 66 and 62 of the communication chip U1A are respectively connected with pins 36, 38, 48 and 46 of the main control chip M1.
In one embodiment, as shown in fig. 7, the communication chip U1A model EC200S is used for wireless communication.
Preferably, the relay station signal monitoring system further comprises a network interface circuit, the network interface circuit comprises a network interface chip U16, capacitors C183, C184, C186-C189 and inductors L30 and L31, pins 30 and 2 of the network interface chip U16 are grounded through the capacitors C183 and C184 respectively, pins 19, 25 and 11 of the network interface chip U16 are grounded through the capacitors C186-C188 respectively, the capacitor C188 is connected in parallel with the C189, and pins 13 and 11 of the network interface chip U16 are connected to a third direct current power supply through the inductors L30 and L31.
In one embodiment, the electrical schematic of the portal circuit is shown in fig. 8; the network port chip U16 model WieB50610 is a gigabit network port chip.
The invention discloses a signal monitoring system of a relay station, which receives frequency modulation and amplitude modulation signals through a signal receiving circuit, a control circuit monitors the frequency modulation and amplitude modulation signals, a signal tuning circuit receives ground digital television signals, and the control circuit enables a signal demodulating circuit to demodulate the ground digital television signals and output a transmission stream; the automatic monitoring of the signal index of the broadcasting station is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A signal monitoring system of a relay station is characterized by comprising a signal receiving circuit, a control circuit, a signal tuning circuit and a signal demodulation circuit, wherein the signal receiving circuit is electrically connected with the signal demodulation circuit;
the signal receiving circuit is used for receiving frequency modulation and amplitude modulation signals, the control circuit is used for monitoring the frequency modulation and amplitude modulation signals, the signal tuning circuit is used for receiving ground digital television signals, and the control circuit is further used for enabling the signal demodulation circuit to demodulate the ground digital television signals and output transport streams.
2. The relay station signal monitoring system of claim 1, wherein the signal receiving circuit comprises an FM/AM receiving chip IC6, a resistor R92, a resistor R93, a resistor R98, a resistor R100, a capacitor C135, a capacitor C137-C141, a capacitor C144, an inductor L22, an inductor L23, an inductor L25, a voltage regulator tube D3 and a connector RF2, the 7 pins of the FM/AM receiving chip IC6 are connected with one end of the resistor R92, the other end of the resistor R92 is connected with one end of the capacitor C135, the other end of the capacitor C135 is connected with one end of the capacitor C141 through the capacitors C137, C138 and L23, the other end of the capacitor C141 is grounded through the inductors L24 and L25, one end of the resistor R93 is connected between the capacitor C135 and the capacitor C137, the other end of the resistor R93 is connected with one end of the resistor R98, the other end of the resistor R98 is connected between the capacitor C137 and the capacitor C138, and the resistor R23 in parallel, the capacitor C144 is connected in parallel with the inductor L25, one end of the inductor L22 is connected between the inductor L23 and the capacitor C141, and the other end of the inductor L22 is connected with the connector RF2 through the capacitor C139 and a voltage regulator tube D3.
3. The signal monitoring system of claim 2, wherein the signal receiving circuit further comprises capacitors C126, C127, C134 and inductors L18, L19, L21, wherein pins 3 and 4 of the fm/am receiving chip IC6 are respectively connected to two ends of the capacitor C127, pin 2 of the fm/am receiving chip IC6 is connected to one end of the capacitor C126, the other end of the capacitor C126 is connected to pin 4 of the fm/am receiving chip IC6 through an inductor L18, the other end of the capacitor C126 is connected to pin 5 of the fm/am receiving chip IC6, and pin 6 of the fm/am receiving chip IC6 is connected to the connector RF2 through an inductor L19, a capacitor C134, an inductor L21.
4. The signal monitoring system of claim 3, wherein the control circuit comprises a master control chip M1, pins 42 and 44 of the master control chip M1 are connected to pins 13 and 12 of the FM/AM receiving chip IC6, respectively, and pins 1 to 6 of the master control chip M1 are connected to a first DC power supply.
5. The relay station signal monitoring system of claim 4, wherein said signal tuning circuit comprises a tuner IC1, inductors L3-L7, capacitors C8-C13, and a junction RF1, the pins 23 and 25 of the tuner IC1 are respectively arranged at two ends of an inductor L5, the pin 23 of the tuner IC1 is also connected with one end of the inductor L3, the other end of the inductor L3 is connected with a pin 25 of the tuner IC1, the other end of the inductor L3 is also connected with one end of a capacitor C10, the other end of the capacitor C10 is connected with one end of an inductor L4, the other end of the inductor L4 is connected with one end of a capacitor C13, the other end of the capacitor C13 is connected with one end of an inductor L7, the other end of the inductor L7 is connected with one end of a capacitor C11, one end of the inductor L4 and the other end of the capacitor C11 are connected through a capacitor C9, and the other end of the capacitor C11 is connected to a terminal RF1 through a capacitor C8.
6. The relay station signal monitoring system according to claim 5, wherein the signal tuning circuit further comprises capacitors C4-C7 and inductors L1 and L2, pins 20 and 21 of the tuner IC1 are respectively connected to two ends of a capacitor C5, the capacitor C4 is connected in parallel with the capacitor C5, pin 20 of the tuner IC1 is connected to a second DC power supply through an inductor L1, pins 11 and 12 of the tuner IC1 are respectively connected to two ends of a capacitor C6, the capacitor C6 is connected in parallel with the capacitor C7, and pin 12 of the tuner IC1 is connected to the second DC power supply through an inductor L2.
7. The relay station signal monitoring system according to claim 5, wherein the signal demodulation circuit comprises a demodulator IC2, a resistor R9, a resistor R10, a light emitting diode D2, capacitors C24 and C25, pins 6 and 7 of the demodulator IC2 are respectively connected with two ends of a resistor R9, pin 7 of the demodulator IC2 is also connected with the ground through a resistor R10, the light emitting diode D2 is connected with the resistor R10 in parallel, and pins 43 and 44 of the demodulator IC2 are respectively connected with pins 14 and 13 of the tuner IC1 through a capacitor C24 and a capacitor C25.
8. The relay station signal monitoring system according to claim 7, further comprising a display circuit, wherein the display circuit comprises a display interface J3, a capacitor C159, and a capacitor C160, wherein 1 and 2 of the display interface J3 are both grounded through the capacitor C159, 40 pins of the display interface J3 are grounded through the capacitor C160, 3-10 pins of the display interface J3 are respectively connected with 1, 3, 5, 7, 9, 11, 13, and 15 pins of the master control chip M1, 12-19 pins of the display interface J3 are respectively connected with 17, 19, 23, 25, 27, 29, 31, and 33 pins of the master control chip M1, and 21-28 pins of the display interface J3 are respectively connected with 35, 37, 41, 43, 45, 47, 49, and 51 pins of the master control chip M1.
9. The relay station signal monitoring system according to claim 4, further comprising a communication circuit, wherein the communication circuit comprises a communication chip U1A, pins 50-56 of the communication chip U1A are all grounded, and pins 68, 67, 66 and 62 of the communication chip U1A are respectively connected to pins 36, 38, 48 and 46 of the master chip M1.
10. The relay station signal monitoring system according to claim 4, further comprising a net port circuit, wherein the net port circuit comprises a net port chip U16, capacitors C183, C184, C186-C189 and inductors L30, L31, pins 30 and 2 of the net port chip U16 are grounded through the capacitors C183 and C184 respectively, pins 19, 25 and 11 of the net port chip U16 are grounded through the capacitors C186-C188 respectively, the capacitor C188 is connected in parallel with the C188, and pins 13 and 11 of the net port chip U16 are further connected with a DC power supply III through the inductors L30 and L31.
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| CN202110314765.2A CN113115028B (en) | 2021-03-24 | 2021-03-24 | Broadcasting station signal monitoring system |
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| CN202110314765.2A CN113115028B (en) | 2021-03-24 | 2021-03-24 | Broadcasting station signal monitoring system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2097227A (en) * | 1981-04-01 | 1982-10-27 | Plessey Co Ltd | FM rebroadcast transceiver |
| CN202841400U (en) * | 2012-06-11 | 2013-03-27 | 中广电广播电影电视设计研究院 | Multi-source radio television broadcast program monitoring equipment and system |
| JP2018182762A (en) * | 2018-08-09 | 2018-11-15 | シャープ株式会社 | Receiving apparatus, television apparatus, storage medium, receiving method, and program |
| CN109379095A (en) * | 2018-09-30 | 2019-02-22 | 张健 | A kind of construction of the highway monitoring system based on Internet of Things |
| CN110460796A (en) * | 2019-08-30 | 2019-11-15 | 郑州工程技术学院 | A kind of industrial equipment operation monitoring signal adjusting circuit |
-
2021
- 2021-03-24 CN CN202110314765.2A patent/CN113115028B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2097227A (en) * | 1981-04-01 | 1982-10-27 | Plessey Co Ltd | FM rebroadcast transceiver |
| CN202841400U (en) * | 2012-06-11 | 2013-03-27 | 中广电广播电影电视设计研究院 | Multi-source radio television broadcast program monitoring equipment and system |
| JP2018182762A (en) * | 2018-08-09 | 2018-11-15 | シャープ株式会社 | Receiving apparatus, television apparatus, storage medium, receiving method, and program |
| CN109379095A (en) * | 2018-09-30 | 2019-02-22 | 张健 | A kind of construction of the highway monitoring system based on Internet of Things |
| CN110460796A (en) * | 2019-08-30 | 2019-11-15 | 郑州工程技术学院 | A kind of industrial equipment operation monitoring signal adjusting circuit |
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| Publication number | Publication date |
|---|---|
| CN113115028B (en) | 2022-11-22 |
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