CN201044446Y - Wireless repeater with same, pilot frequency transmission function - Google Patents
Wireless repeater with same, pilot frequency transmission function Download PDFInfo
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- CN201044446Y CN201044446Y CNU2007200067238U CN200720006723U CN201044446Y CN 201044446 Y CN201044446 Y CN 201044446Y CN U2007200067238 U CNU2007200067238 U CN U2007200067238U CN 200720006723 U CN200720006723 U CN 200720006723U CN 201044446 Y CN201044446 Y CN 201044446Y
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Abstract
The utility model provides a wireless direct amplification station with a same and different frequency forwarding function, which comprises a donor antenna, a retransmission antenna, a first and a second duplexer, a first and a second frequency signal link and a controller, wherein, the first frequency signal link comprises a combiner, a first radio frequency switch connected with a first channel of the first duplexer, a second radio frequency switch connected with a first frequency channel of the second duplexer, a third radio frequency switch connected with the first radio frequency switch and the second radio frequency switch respectively, a first downlink low-noise amplifier connected between the first radio frequency and a first input end of the combiner, a first uplink low-noise amplifier connected between the second radio frequency and a second input end of the combiner and a first main power amplifier connected between an output end of the combiner and the third radio frequency switch. The second frequency signal link comprises a second low-noise amplifier serially connected between a second frequency channel of the first duplexer and a second frequency of the second duplexer and a second main power amplifier. The controller is connected with each radio frequency switch and controls switching of the switches.
Description
Technical field
The utility model relates to a kind of wireless discharging-directly station same, different-frequency forwarding function that has, in particular for having of railroad train wireless dispatching communication system wireless discharging-directly station same, different-frequency forwarding function.
Background technology
The railroad train wireless dispatching communication system is a kind of visual plant that guarantees traffic safety, and this system mainly comprises dispatching telephone control board, station (base station) equipment, locomotive equipment, handheld device etc.Along with improving constantly of railway production and operation efficient, Transport Safety requirement and communication modernization level, the railroad train wireless dispatching communication system will realize that not only train radio is dispatched, rail yard is shunt Speech Communication functions such as communication, railway section mobile communication, has also born the wireless transmission task of data such as running number transmission, train tail wind pressure transfer of data, road junction pre-(newspaper) police simultaneously.On the other hand, the highway section of hilly country is long because Chinese Railway is in, interval bend and tunnel are numerous, and the railroad train wireless dispatching communication system must realize that non-blind area carries out lid.
Known, repeater (repeater) is a kind of equipment that plays signal enhancing and relaying in the wireless communication transmissions process, is widely used in the covering in radio communication blind area and weak district.Use the repeater can guarantee under the prerequisite that does not increase base station number that communication network extends covering, it is good to have anti-interference, simple in structure, small investment and advantage such as easy for installation.Existing repeater mainly contains wireless discharging-directly station, optical fiber repeater, frequency-shift repeater etc.Wherein, wireless discharging-directly station comprises donor antenna, radio frequency unit, retransmitting antenna, and its operation principle is: in down link, receive base station signal by donor antenna, treat the overlay area by being transmitted into by retransmitting antenna after radio frequency unit filtering, the amplification again.In up link, the signal of the travelling carriage in the overlay area is transmitted into the base station after being handled by radio frequency unit with same working method, thereby realizes the signal transmission of base station and travelling carriage.
At present, the interval overlay device that uses in the railway wireless communication system comprises: in the hole, outer tunnel, hole alien frequencies repeater, cross complaint formula repeater, head and the tail platform repeater, wireless discharging-directly station, alien frequencies optical fiber repeater, common frequency optical fiber repeater etc., though above equipment can solve some interval blind area communications, but all there is deficiency in various degree, all adopt alien frequencies signal relay pass-through mode as tunnel repeater, can not satisfy with audio data and transmit, and the investment of leakage cable is higher relatively; Cross complaint repeater and head and the tail platform all adopt a frequency arrowband mode, can not satisfy the needs that data transmit; The alien frequencies optical fiber repeater can not satisfy equally with audio data to be transmitted; Wireless discharging-directly station mainly adopts homogenous frequency signal relaying pass-through mode, and is identical with common frequency optical fiber repeater, do not possess different-frequency forwarding function, the communicating requirement in the time of can not satisfying the locomotive long routing cover race of each Railway Bureau.
(operating frequency of station console and locomotive platform is 457～459MHz) because the existing employing of each equipment of railroad train wireless dispatching communication system is with the frequency working method, the alien frequencies of employing working method is arranged again, and (station console tranmitting frequency, locomotive platform receive frequency are 467～469MHz, and station console receive frequency, locomotive platform tranmitting frequency are 457～459MHz).For example, in railway B system communication system section (promptly the single duplex of four frequency groups is compatible), that dispatching command transmits employing is alien frequencies 467.700MHz/457.700MHz, what running number transmitted employing is with frequency 457.550MHz, the same frequency 457.700MHz that train scheduling communication is adopted on the Plain then adopts alien frequencies 467.700MHz in the tunnel, row mantissa is to transmit with frequency 457.700MHZ according to what transmit employing, the railcar equipment of One's name is legion particularly, major part all adopts joining common-frequency simplex C standard.And existing trunking does not possess the existing broadband signal repeat function of transmitting, having alien frequencies to transmit with frequency, can not satisfy the railroad train wireless dispatching communication system all can carry out voice communication and transfer of data at the section of different systems needs.
Summary of the invention
The purpose of this utility model provides a kind of wireless discharging-directly station same, different-frequency forwarding function that has.
Having that the utility model provides wireless discharging-directly station same, different-frequency forwarding function, comprise donor antenna, radio frequency unit and retransmitting antenna, it is characterized in that: radio frequency unit comprises first duplexer, and it has the common terminal and the first frequency that are connected with donor antenna and receives/send out passage and second frequency transmission channel;
Second duplexer, it has the common terminal and the first frequency that are connected with retransmitting antenna and receives/send out passage and second frequency receive path;
The first frequency signal link comprises mixer, has first, second input and at least one output; First radio-frequency (RF) switch, its common terminal connect the first frequency of first duplexer and receive/send out passage; Second radio-frequency (RF) switch, its common terminal connect the first frequency of second duplexer and receive/send out passage; The 3rd radio frequency switch, its normal-closed end, Chang Kaiduan connect the Chang Kaiduan of first radio-frequency (RF) switch, the Chang Kaiduan of second radio-frequency (RF) switch respectively; The first descending low noise amplifier is connected between the first input end of the normal-closed end of first radio-frequency (RF) switch and mixer; The first up low noise amplifier is connected between second input of the normal-closed end of second radio-frequency (RF) switch and mixer; The first main power amplifier is connected between the common terminal of output of mixer and the 3rd radio frequency switch;
The second frequency signal link comprises the second descending low noise amplifier and the second main power amplifier between the second frequency receive path of the second frequency transmission channel that is serially connected in first duplexer and second duplexer; And
Controller is connected with each radio-frequency (RF) switch of first frequency signal link and can controls each radio-frequency (RF) switch according to the needs of uplink and downlink transmission and switches to form the upstream or downstream passage.
Best, the first frequency signal link also has the 4th radio-frequency (RF) switch and the first non-firm power amplifier, the common terminal of the 4th radio-frequency (RF) switch, normal-closed end connect the common terminal of the 3rd radio frequency switch, the output of the first main power amplifier respectively, the first non-firm power amplifier is connected between the Chang Kaiduan of another output of mixer and the 4th radio-frequency (RF) switch, and the 4th radio-frequency (RF) switch is connected with controller and is switched so that the first main power amplifier, the first non-firm power amplifier are connected with the common terminal of the 3rd radio frequency switch by controller control.
Best, controller switches the 4th radio-frequency (RF) switch according to the detected first main power amplifier output signal size control.
Best, the second frequency signal link also has splitter, the second non-firm power amplifier and the 5th radio-frequency (RF) switch, the input of splitter is connected with the output of the second descending low noise amplifier, two output connects the second main power amplifier respectively, the second non-firm power amplifier input terminal, the common terminal of the 5th radio-frequency (RF) switch, normal-closed end, Chang Kaiduan connects the second frequency receive path of second duplexer respectively, the output of the second main power amplifier, the output of the second non-firm power amplifier, the 5th radio-frequency (RF) switch is connected with controller, and switch selectively to make the second main power amplifier by controller control, the second non-firm power amplifier is connected with the second frequency receive path of second duplexer.
Best, controller switches the 5th radio-frequency (RF) switch according to the detected second main power amplifier output signal size control.
Best, the first frequency signal link also has descending input detecting circuit, this testing circuit connects first descending low noise amplifier and the controller respectively, and controller is according to the detected first frequency of this testing circuit descending incoming signal level control switching second radio-frequency (RF) switch and the 3rd radio frequency switch.
Best, the first frequency signal link also has up input detecting circuit, this testing circuit connects first up low noise amplifier and the controller respectively, and controller is according to the up incoming signal level control of the detected first frequency of this testing circuit switching first radio-frequency (RF) switch.
Best, the operating state of controller corresponding transform power amplifier when radio-frequency (RF) switch is switched in control.
Best, each power amplifier all has enable switch, and controller is connected and passes through to trigger the operating state of enable switch transform power amplifier with enable switch.
Best, the second frequency signal link also has input detecting circuit, this testing circuit connects second descending low noise amplifier and the controller respectively, and controller is according to the operating state of the descending incoming signal level conversion second main power amplifier of the detected second frequency of this testing circuit or the second non-firm power amplifier, and power amplifier has enable switch, and controller is connected and passes through to trigger the operating state of enable switch transform power amplifier with enable switch.
Best, the burglar alarm that is connected with controller also is installed, burglar alarm comprises Infrared Detectors and/or video-unit.
Having that the utility model provides wireless discharging-directly station same, different-frequency forwarding function, its beneficial effect is: except having the pilot frequency communication passage, owing to adopt handoff technique with frequency uplink and downlink passage, increased together communication port frequently, realized also that simultaneously signal closes the road transmission.Its simple in structure, dependable performance, possess same, the compatible working method of alien frequencies, be applicable to the covering in railway wireless communication blind district and weak district, can satisfy the railroad train wireless dispatching communication system all can carry out voice communication and transfer of data at the section of different systems needs.And has an anti-theft alarm function.
Below, by specific embodiment concrete structure and the beneficial effect of having of providing of the utility model with the wireless discharging-directly station of, different-frequency forwarding function is elaborated.
Description of drawings
Fig. 1 is the formation schematic diagram that has with the wireless discharging-directly station of, different-frequency forwarding function.
Preferred forms
The utility model provides has wireless discharging-directly station with, different-frequency forwarding function, is used for the railroad train wireless dispatching communication system of railway B system communication system section (promptly four the single duplex of group is compatible frequently), the covering in realization radio communication blind area and weak district.Known, above-mentioned railroad train wireless dispatching communication system adopts together, the independent semiduplex working method of alien frequencies is carried out voice communication and transfer of data, the operating frequency of station console and locomotive platform is 457～459MHz (centre frequency 458MHz) when promptly working with frequency, station console tranmitting frequency, locomotive platform receive frequency are 467～469MHz (centre frequency 468MHz) during alien frequencies work, and station console receive frequency, locomotive platform tranmitting frequency are 457～459MHz (centre frequency 458MHz).
Present embodiment provides has wireless discharging-directly station with, different-frequency forwarding function, can carry out uplink and downlink 458MHz with transmitting frequently and up 458MHz, descending 468MHz alien frequencies transmit.This wireless discharging-directly station comprises donor antenna, radio frequency unit and retransmitting antenna, and the connection of its formation and each module of radio frequency unit is with reference to shown in Figure 1:
First duplexer, it has the common terminal and the 458MHz that are connected with donor antenna and receives/send out passage and 468MHz transmission channel;
Second duplexer, it has the common terminal and the 458MHz that are connected with retransmitting antenna and receives/send out passage and 468MHz receive path;
The 458MHz signal link comprises mixer, the descending low noise amplifier of 458MHz, the up low noise amplifier of 458MHz, first radio-frequency (RF) switch, second radio-frequency (RF) switch, the 3rd radio frequency switch, the 4th radio-frequency (RF) switch, 458MHz master's power amplifier, 458MHz non-firm power amplifier, the descending input detecting circuit of 458MHz and the up input detecting circuit of 458MHz.Mixer has first, second input and first output, second output.The 458MHz that the common terminal of first radio-frequency (RF) switch connects first duplexer receives/sends out passage, the 458MHz that the common terminal of second radio-frequency (RF) switch connects second duplexer receives/passage, and the common terminal of the 3rd radio frequency switch, normal-closed end, Chang Kaiduan connect common terminal, the Chang Kaiduan of first radio-frequency (RF) switch, the Chang Kaiduan of second radio-frequency (RF) switch of the 4th radio-frequency (RF) switch respectively.The descending low noise amplifier of 458MHz is connected between the first input end of the normal-closed end of first radio-frequency (RF) switch and mixer.The up low noise amplifier of 458MHz is connected between second input of the normal-closed end of second radio-frequency (RF) switch and mixer.458MHz master's power amplifier is connected between the normal-closed end of first output of mixer and the 4th radio-frequency (RF) switch.458MHz non-firm power amplifier is connected between the Chang Kaiduan of second output of mixer and the 4th radio-frequency (RF) switch.The descending input detecting circuit of 458MHz connects descending low noise amplifier of 458MHz and controller respectively.The up input detecting circuit of 458MHz connects up low noise amplifier of 458MHz and controller respectively
The 468MHz signal link comprises the descending low noise amplifier of 468MHz, power splitter, 468MHz master's power amplifier, 468MHz non-firm power amplifier, the 5th radio-frequency (RF) switch and 468MHz input detecting circuit.Power splitter has input and first, second output.The descending low noise amplifier of 468MHz is connected between the input of the 468MHz transmission channel of first duplexer and power splitter.468MHz master's power amplifier is connected between the normal-closed end of first output of power splitter and the 5th radio-frequency (RF) switch.468MHz non-firm power amplifier is connected between the Chang Kaiduan of second output of power splitter and the 5th radio-frequency (RF) switch.The common terminal of the 5th radio-frequency (RF) switch is connected with the descending low noise amplifier of 468MHz.
Controller comprises computer system and moves control program.Itself and the descending input detecting circuit of 458MHz, the up input detecting circuit of 458MHz, the 468MHz input detecting circuit, first to the 5th radio-frequency (RF) switch, and mixer connects, by input, the output signal of detection power amplifier, and the switching of each radio-frequency (RF) switch of control, to form the upstream or downstream passage according to the transmission needs, to select to use main power amplifier or non-firm power amplifier and transform power amplifier operating state correspondingly.Its concrete control procedure sees for details following.
Having that the utility model provides wireless discharging-directly station same, different-frequency forwarding function can be operated in joining common-frequency simplex pattern and different single-frequency simplex, dual-mode.Its operation principle is described respectively below:
A) joining common-frequency simplex pattern
When downlink transfer, when donor antenna receives 458MHz signal from station console, 458MHz passage by first duplexer arrives first radio-frequency (RF) switch, because first radio-frequency (RF) switch is normally closed at the descending low noise amplifier input of 458MHz, thereby signal is input to this low noise amplifier, and outputs to 458MHz master's power amplifier through mixer.Meanwhile, the descending circuit for checking input signals of 458MHz that is connected with this low noise amplifier detects input signal, when incoming signal level surpasses threshold level (the big I of threshold level is regulated as required), this testing circuit sends an identification signal to controller, Transistor-Transistor Logic level of controller output triggers the enable switch of this power amplifier, make this power amplifier be converted to operating state so that radiofrequency signal is amplified by holding state, the output signal of controller makes second simultaneously, the 3rd radio frequency switch carries out passage and switches, the radiofrequency signal of power amplifier output is through second, the signalling channel of the 3rd radio frequency switch (the normally closed output at main power amplifier of the 4th radio-frequency (RF) switch this moment) arrives the 458MHz passage of second duplexer, be transferred to retransmitting antenna at last and forward, realize the 450MHz signal of the area of coverage is covered.And after the station console signal interruption, the descending low noise amplifier of 458MHz does not have the signal input, descending circuit for checking input signals detects the signal less than input, the TTL output level of controller overturns, thereby make second, third radio-frequency (RF) switch return to original normally off, and make power amplifier be converted to holding state wait, the detection of uplink signal.
When uplink, when retransmitting antenna receives 458MHz signal from the locomotive platform, 458MHz passage by second duplexer arrives second radio-frequency (RF) switch, because second radio-frequency (RF) switch is normally closed at 458MHz low noise amplifier input, radiofrequency signal outputs to 458MHz master's power amplifier through mixer, the descending circuit for checking input signals of 458MHz sends identification signal simultaneously, making power amplifier be converted to operating state by controller control amplifies radiofrequency signal, and make first radio-frequency (RF) switch carry out the passage switching, the radiofrequency signal of power amplifier output is through the 3rd, the signalling channel of first radio-frequency (RF) switch (the normally closed output at main power amplifier of the 4th radio-frequency (RF) switch this moment) arrives the 458MHz passage of first duplexer, be transferred to donor antenna again, be transmitted to station console.
In the above-mentioned course of work, when donor antenna and retransmitting antenna received the signal of station console and locomotive platform simultaneously, the program control up link by controller was set to the priority task state.
In addition, in actual engineering, note also the isolation problem of donor antenna and retransmitting antenna.Except select for use high before and after the antenna of ratio, can also utilize the threshold level of uplink and downlink just to be provided with and improve two isolation between antennas.By the uplink and downlink level rationally is set, can improve system reliability.
B) different single-frequency simplex, dual-mode
When downlink transfer, when donor antenna receives 468MHz signal from station console, 468MHz passage by first duplexer arrives the descending low noise amplifier of 468MHz, output to 468MHz master's power amplifier through power splitter, power amplifier amplifies radiofrequency signal, arrive the 468MHz passage of second duplexer again through the signalling channel of the 5th radio-frequency (RF) switch, be transferred to retransmitting antenna at last and forward, realize the 468MHz signal of the area of coverage is covered.
When uplink, its transmission course is identical with the uplink of joining common-frequency simplex pattern.
Owing to adopt the alien frequencies mode of operation, so but but both also diplex operations of single-simplex operation of direct amplification machine.
Below, the operation principle of the 4th radio-frequency (RF) switch, the 5th radio-frequency (RF) switch is carried out brief description.
The 4th radio-frequency (RF) switch, the 5th radio-frequency (RF) switch are respectively applied for selects primary, spare power amplifier of 458MHz and the primary, spare power amplifier of 468MHz.Its operation principle is: under normal condition, the 4th radio-frequency (RF) switch, all normally closed output of the 5th radio-frequency (RF) switch at main power amplifier, the promptly preferential main power amplifier of use of selecting, controller detects the size of corresponding main power amplifier output signal respectively by the 4th radio-frequency (RF) switch, the 5th radio-frequency (RF) switch switch.When main power amplifier breaks down, its output voltage changes, exporting a Transistor-Transistor Logic level in the controller this moment switches the 4th radio-frequency (RF) switch, the 5th radio-frequency (RF) switch, to select to use the non-firm power amplifier, start simultaneously the non-firm power amplifier enable switch, make the non-firm power amplifier by keeping marquis's state exchange to operating state, and close the enable switch of main power amplifier, so that main power amplifier quits work.Controller produces main power amplifier fault alarm signal and issues webmaster, notifies the attendant to safeguard.
In addition, owing on the repeater or near it Infrared Detectors and/or video-unit are installed, Infrared Detectors, video-unit are connected with controller.When Infrared Detectors has detected the people near behind the equipment, send alarm and start video-unit simultaneously and take pictures, photo passes to network management center by network management and monitoring system, and on-the-spot evidence is provided in real time, solves the burglar alarm problem of equipment.
More than combine embodiment the utility model is illustrated, but this does not constitute restriction of the present utility model.Any modifications and variations of having done under same design also all belong to the scope that the utility model is protected.
Claims (11)
1. has wireless discharging-directly station same, different-frequency forwarding function, comprise donor antenna, radio frequency unit and retransmitting antenna, it is characterized in that: radio frequency unit comprises first duplexer, and it has the common terminal and the first frequency that are connected with donor antenna and receives/send out passage and second frequency transmission channel; Second duplexer, it has the common terminal and the first frequency that are connected with retransmitting antenna and receives/send out passage and second frequency receive path; The first frequency signal link comprises mixer, has first, second input and at least one output; First radio-frequency (RF) switch, its common terminal connect the first frequency of first duplexer and receive/send out passage; Second radio-frequency (RF) switch, its common terminal connect the first frequency of second duplexer and receive/send out passage; The 3rd radio frequency switch, its normal-closed end, Chang Kaiduan connect the Chang Kaiduan of first radio-frequency (RF) switch, the Chang Kaiduan of second radio-frequency (RF) switch respectively; The first descending low noise amplifier is connected between the first input end of the normal-closed end of first radio-frequency (RF) switch and mixer; The first up low noise amplifier is connected between second input of the normal-closed end of second radio-frequency (RF) switch and mixer; The first main power amplifier is connected between the common terminal of output of mixer and the 3rd radio frequency switch; The second frequency signal link comprises the second descending low noise amplifier and the second main power amplifier between the second frequency receive path of the second frequency transmission channel that is serially connected in first duplexer and second duplexer; And controller, be connected with each radio-frequency (RF) switch of first frequency signal link and can control each radio-frequency (RF) switch and switch to form the upstream or downstream passage according to the needs of uplink and downlink transmission.
2. according to claim 1 have together, the wireless discharging-directly station of different-frequency forwarding function, it is characterized in that: the first frequency signal link also has the 4th radio-frequency (RF) switch and the first non-firm power amplifier, the common terminal of the 4th radio-frequency (RF) switch, normal-closed end connects the common terminal of the 3rd radio frequency switch respectively, the output of the first main power amplifier, the first non-firm power amplifier is connected between the Chang Kaiduan of another output of mixer and the 4th radio-frequency (RF) switch, and the 4th radio-frequency (RF) switch is connected with controller, and switch selectively to make the first main power amplifier by controller control, the first non-firm power amplifier is connected with the common terminal of the 3rd radio frequency switch.
3. the wireless discharging-directly station that has with, different-frequency forwarding function according to claim 2 is characterized in that: controller switches the 4th radio-frequency (RF) switch according to the detected first main power amplifier output signal size control.
4. according to claim 1 have together, the wireless discharging-directly station of different-frequency forwarding function, it is characterized in that: the second frequency signal link also has splitter, the second non-firm power amplifier and the 5th radio-frequency (RF) switch, the input of splitter is connected with the output of the second descending low noise amplifier, two output connects the second main power amplifier respectively, the second non-firm power amplifier input terminal, the common terminal of the 5th radio-frequency (RF) switch, normal-closed end, Chang Kaiduan connects the second frequency receive path of second duplexer respectively, the output of the second main power amplifier, the output of the second non-firm power amplifier, the 5th radio-frequency (RF) switch is connected with controller, and switch selectively to make the second main power amplifier by controller control, the second non-firm power amplifier is connected with the second frequency receive path of second duplexer.
5. the wireless discharging-directly station that has with, different-frequency forwarding function according to claim 4 is characterized in that: controller switches the 5th radio-frequency (RF) switch according to the detected second main power amplifier output signal size control.
6. the wireless discharging-directly station that has with, different-frequency forwarding function according to claim 1, it is characterized in that: the first frequency signal link also has descending input detecting circuit, this testing circuit connects first descending low noise amplifier and the controller respectively, and controller is according to the detected first frequency of this testing circuit descending incoming signal level control switching second radio-frequency (RF) switch and the 3rd radio frequency switch.
7. the wireless discharging-directly station that has with, different-frequency forwarding function according to claim 1, it is characterized in that: the first frequency signal link also has up input detecting circuit, this testing circuit connects first up low noise amplifier and the controller respectively, and controller is according to the up incoming signal level control of the detected first frequency of this testing circuit switching first radio-frequency (RF) switch.
8. according to the described wireless discharging-directly station that has with, different-frequency forwarding function of each claim in the claim 1 to 7, it is characterized in that: the operating state of controller corresponding transform power amplifier when radio-frequency (RF) switch is switched in control.
9. the wireless discharging-directly station that has with, different-frequency forwarding function according to claim 8, it is characterized in that: each power amplifier all has enable switch, and controller is connected and passes through the operating state of triggering enable switch transform power amplifier with enable switch.
10. according to claim 1, the 4 or 5 described wireless discharging-directly stations that have with, different-frequency forwarding function, it is characterized in that: the second frequency signal link also has input detecting circuit, this testing circuit connects second descending low noise amplifier and the controller respectively, and controller is according to the operating state of the descending incoming signal level conversion second main power amplifier of the detected second frequency of this testing circuit or the second non-firm power amplifier, and power amplifier has enable switch, and controller is connected and passes through to trigger the operating state of enable switch transform power amplifier with enable switch.
11. according to the described wireless discharging-directly station that has with, different-frequency forwarding function of each claim in the claim 1 to 7, it is characterized in that: the burglar alarm that is connected with controller also is installed, and burglar alarm comprises Infrared Detectors and/or video-unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200067238U CN201044446Y (en) | 2007-04-04 | 2007-04-04 | Wireless repeater with same, pilot frequency transmission function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200067238U CN201044446Y (en) | 2007-04-04 | 2007-04-04 | Wireless repeater with same, pilot frequency transmission function |
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| Publication Number | Publication Date |
|---|---|
| CN201044446Y true CN201044446Y (en) | 2008-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200067238U Expired - Lifetime CN201044446Y (en) | 2007-04-04 | 2007-04-04 | Wireless repeater with same, pilot frequency transmission function |
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| CN (1) | CN201044446Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114978272A (en) * | 2022-04-29 | 2022-08-30 | 深圳市可信华成通信科技有限公司 | Multi-band digital repeater |
-
2007
- 2007-04-04 CN CNU2007200067238U patent/CN201044446Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114978272A (en) * | 2022-04-29 | 2022-08-30 | 深圳市可信华成通信科技有限公司 | Multi-band digital repeater |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080402 Effective date of abandoning: 20070404 |