CN203070536U

CN203070536U - Traffic signal lamp wireless broadcasting system

Info

Publication number: CN203070536U
Application number: CN 201320015790
Authority: CN
Inventors: 胡建国
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-14
Filing date: 2013-01-14
Publication date: 2013-07-17
Anticipated expiration: 2023-01-14

Abstract

The utility model relates to a traffic signal lamp wireless broadcasting system. The traffic signal lamp wireless broadcasting system is technically characterized by comprising a sending end and a receiving end, wherein the sending end comprises a signal state acquisition control module, an audio signal module, a frequency modulation and radio frequency output module and an antenna which are connected in order, the signal state acquisition control module is connected with traffic signal lamps and is used for acquiring states of the traffic signal lamps and realizing control of the audio signal module, the audio signal module outputs an audio signal, is connected with the frequency modulation and radio frequency output module for frequency modulation and radio frequency output and then is connected with the antenna to realize a function of wireless broadcasting, and the receiving end employs a wireless receiving module to realize a function of emission signal receiving at an emission end. According to the traffic signal lamp wireless broadcasting system, prompt in advance of a signal lamp state for each signal lamp vehicle at a crossing is carried out in a wireless broadcasting mode, a driver can receive caution information at a place having a distance of 0-300m to the crossing of a road, so traffic accidents are reduced; a pass speed is improved; and an obstruction state at the crossing can be alleviated.

Description

The traffic lights radio broadcasting system

Technical field

The utility model belongs to the traffic lights technical field, especially a kind of traffic lights radio broadcasting system.

Background technology

Traffic lights have important effect when staff vehicles travels.1918, on the basis of original red, green double-colored signal lamp, increased an amber lamp that plays buffer action and formed redness, yellow, green coston light and use till today.Enter 21 century, along with the explosive growth of automobile quantity, existing coston light can't adapt to the needs of traffic administration, especially since new traffic law promulgation and the implementation, a lot of drivers are when steering vehicle passes through the crossing, deliberately slow down the speed of a motor vehicle owing to worry to rush amber light, though also do not caused blocking up of crossing so in violation of rules and regulations; Also have some drivers normally by the crossing time, because can't calculate the time that green light and amber light change or be subjected to the place ahead cart to block sight line to cause amber light flicker fashion not by the crossing, this moment is in case take the measure of bringing to a halt to be easy to cause the vehicle rear-end collision traffic hazard.Research institution claims that 5 meters flavescence lamps of off-line stop incessantly need shift to an earlier date early warning in 8 seconds at least substantially, therefore, how to make the driver amber light time of lighting be accomplished to know what's what by the crossing time and presses for the problem of solution at present.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of reasonable in design, traffic lights radio broadcasting system accurately and effectively is provided.

The utility model solves its technical matters and takes following technical scheme to realize:

A kind of traffic lights radio broadcasting system, comprise transmitting terminal and receiving end, described transmitting terminal is connected and composed successively by signal condition acquisition control module, sound signal module, frequency modulation (PFM) and radio frequency output module and antenna, and this signal condition acquisition control module is connected for the state of gathering traffic lights and realizes control function to the sound signal module with traffic lights; This voice signal module output audio signal also is connected to frequency modulation (PFM) and the radio frequency output module, and this frequency modulation (PFM) and radio frequency output module carry out being connected to realization radio broadcasting function on the antenna after the frequency modulation (PFM) output to sound signal; The radio reception module that adopts described receiving end realizes the receiving function that transmits to transmitting terminal.

And described signal condition acquisition control module comprises the relay that is connected in parallel on the green circuit for lamp, by the work of this relay control sound signal module.

And the working frequency range of described frequency modulation (PFM) and radio frequency output module is 2.4GHz or is 5.8GHz; The working frequency range of described radio receiver circuit is 2.4GHz.

And described frequency modulation (PFM) and radio frequency output module adopt the WA2422TX module; Described radio receiver circuit adopts the WA2422RX module.

Advantage of the present utility model and good effect are:

The utility model is by a fixing rf frequency, each regional road cross adopts radio broadcasting mode to carry out auditory tone cues in the city, 0-300 rice distance can be by the receiving trap uppick signal lamp information warning in the automobile to the road cross travelling for the driver, time before making the driver light the state amber light of signal lamp knows what's what, generation that not only can the minimizing accident, simultaneously also improve the passage rate at crossing, alleviated the crossing stopping state.

Description of drawings

Fig. 1 is circuit block diagram of the present utility model;

Fig. 2 is applied topology figure of the present utility model;

Fig. 3 is the schematic diagram of signal condition acquisition control module;

Fig. 4 is the schematic diagram of sound signal module;

Fig. 5 is the schematic diagram of radio transmission module;

Fig. 6 is the schematic diagram of radio reception module.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

A kind of traffic lights radio broadcasting system, as shown in Figure 1, comprise transmitting terminal and receiving end, described transmitting terminal is connected and composed successively by signal condition acquisition control module 1, sound signal module 2, frequency modulation (PFM) and radio frequency output module 3 and antenna, this signal condition acquisition control module is connected with traffic lights for the state of gathering traffic lights, this signal condition acquisition control module is connected to the sound signal module with the state that collects by output terminal, realizes the control function to the sound signal module; The output of sound signal module is warned voice and is connected to frequency modulation (PFM) and radio frequency output module by output terminal; Sound signal is carried out frequency modulation (PFM) for this frequency modulation (PFM) and radio frequency output module and radio frequency output back is connected to antenna realization radio broadcasting function by output terminal; The reception that transmits that described receiving end adopts radio reception module 4 to realize transmitting terminal.The utility model links together with the traffic lights of each road cross respectively and constitutes a traffic lights radio broadcasting system, as shown in Figure 2, each traffic lights all connects a traffic lights radio broadcasting system, each traffic lights radio broadcasting system is gathered coupled traffic signal light condition, and with a unified rf frequency of setting and adopt the radio broadcasting mode to point out broadcasting, for example " please noted the amber light countdown 10 seconds ", " 9 seconds ", " 8 seconds ", " 7 seconds ", " 6 seconds ", " 5 seconds ", " 4 seconds ", " 3 seconds ", " 2 seconds ", " 1 second " etc. makes the 0-300 rice distance of driver before the crossing light the preceding time to amber light and accomplishes to know what's what.

Each several part circuit to the traffic lights radio broadcasting system describes respectively below.

The signal condition acquisition control module changes picked up signal according to the open-interval of greensignal light, because the time of lighting of each greensignal light is a constant, can learn lighting the time of amber light according to the time of lighting of green light.As shown in Figure 3, the signal condition acquisition control module comprises the relay that is connected in parallel on the green circuit for lamp, when greensignal light is opened, starting relay makes the relay contact adhesive obtain switch controlling signal, switch controlling signal starts the sound signal module then, goes out by antenna broadcast through frequency modulation (PFM), radio frequency output.When greensignal light extinguished, the automatic cutout relay cut out the sound signal module and stops to send sound signal, when lighting again through the certain hour greensignal light again starting relay control transmit control signal.

The sound signal module adopts HT81230 speech IC chip, as shown in Figure 4, the audio content recording and storing that will need in advance to broadcast is in the speech IC chip, under the control of signal condition acquisition control module, trigger HT81230 speech IC chip, by output terminal to frequency modulation (PFM) and radio frequency output module output audio signal.

Frequency modulation (PFM) and radio frequency output module adopt WA2422TX ANTENN AUDIO transmitter module (Zhongshan University spends all research institute's designs to produce), its working frequency range is the international free green frequency range of 2.4GHz, as shown in Figure 5, as shown in Figure 5, this module is with the VCO VCO, the PLL phaselocked loop, the voice modulation demodulation, frequency modulation (PFM), the radio frequency output function is integrated on the module, when the sound signal of input end, voice modulation demodulation through WA2422TX inside, frequency modulation (PFM), export radiofrequency signal behind the higher-order of oscillation and the rf output circuit, be connected to antenna by output terminal and realize the radio broadcasting function.

Wireless receiving circuit adopts WA2422RX ANTENN AUDIO receiver module, as shown in Figure 6, this module is integrated in rf modulations demodulation, VCO VCO, PLL phaselocked loop, voice modulation demodulation, function on the module, when the input end antenna receives radiofrequency signal, output audio signal behind the rf modulations demodulation of process WA2422RX inside, VCO VCO, PLL phaselocked loop, the voice modulation demodulation output circuit, realization receives the uppick signal information to the signal of transmitting terminal.

This radio broadcaster is operated in the 2400-2483.5MHz frequency range, has low-voltage, low in power consumption, emissive power 17dBm, emission coverage 0-300 rice.

It is emphasized that; embodiment described in the utility model is illustrative; rather than it is determinate; therefore the utility model comprises and is not limited to the embodiment described in the embodiment; every by those skilled in the art according to other embodiments that the technical solution of the utility model draws, belong to the scope of the utility model protection equally.

Claims

1. traffic lights radio broadcasting system, it is characterized in that: comprise transmitting terminal and receiving end, described transmitting terminal is connected and composed successively by signal condition acquisition control module, sound signal module, frequency modulation (PFM) and radio frequency output module and antenna, and this signal condition acquisition control module is connected for the state of gathering traffic lights and realizes control function to the sound signal module with traffic lights; This voice signal module output audio signal also is connected to frequency modulation (PFM) and the radio frequency output module, and this frequency modulation (PFM) and radio frequency output module carry out being connected to realization radio broadcasting function on the antenna after the frequency modulation (PFM) output to sound signal; The radio reception module that adopts described receiving end realizes the receiving function that transmits to transmitting terminal.

2. traffic lights radio broadcasting system according to claim 1, it is characterized in that: described signal condition acquisition control module comprises the relay that is connected in parallel on the green circuit for lamp, by the work of this relay control sound signal module.

3. traffic lights radio broadcasting system according to claim 1 is characterized in that: described sound signal module employing HT81230 speech chip.

4. according to each described traffic lights radio broadcasting system of claim 1 to 3, it is characterized in that: the working frequency range of described frequency modulation (PFM) and radio frequency output module is 2.4GHz or is 5.8GHz; The working frequency range of described radio receiver circuit is 2.4GHz.

5. traffic lights radio broadcasting system according to claim 4 is characterized in that: described frequency modulation (PFM) and radio frequency output module employing WA2422TX module; Described radio receiver circuit adopts the WA2422RX module.