The clamp type wireless receiver
The utility model relates to a kind of radio receiver, particularly a kind of clamp type wireless receiver that the visitor of team listens to the explanation use that be suitable for.
Tourist industry is fast-developing, the number of annual sightseeing is also increasing, and most visitors can select with a visit, like this, for the tourist group that leads the visitor of team or tourist guide, how to make the hommization more of whole tourism process, convenient purification is necessary, at present, tourist group or tourist guide use megaphone to transmit relevant information mostly, the shortcoming of megaphone is: interfere with each other between the team, the sound coverage is little, like this, will produce some problems: the visitor is taken place fall behind, listen to explanation and situation such as do not hear, so, demand at the tourism visit of existing team, this megaphone can not satisfy the demands, having some receiving equipments to offer the visitor in addition on the market uses, can be carried by the visitor, but its profile and to carry the aspect be not very convenient, original visitor travels and visits the thing that carries just it is enough, with oneself portablely again seem very not light with such receiving equipment, like this, it is small and exquisite to be badly in need of a kind of volume, wireless receiver easy to carry uses.
The utility model content
In order to solve the demand, the utility model has been designed and developed a kind of profile clamp type wireless receiver small and exquisite, easy to carry, this receiver carries out wireless receiving technology and hardware device integrated, be designed to clamp type and quality is light, can be clipped in easily on visitor's the knapsack shoulder belt or on the collar, have more multiband coupling, receiving range characteristics far away, be particularly suitable for tourist party and use.
The technical solution of the utility model is achieved in that
1) a kind of clamp type wireless receiver, formed by receiver housing, enclosure interior control section, internal control partly comprises MCU, power supply power pack, radio-frequency (RF) identification receiving unit, audio frequency demodulation part, D/A conversion portion, the part of raising one's voice, outside is made up of button, earphone jack, expanding USB interface, housing is divided into upper and lower two parts, and connected by Spring Card, receive the signal of transmitting terminal by the radio-frequency (RF) identification receiving unit, after the MCU processing, be converted into sound by the part broadcast of raising one's voice through audio frequency demodulation part and D/A conversion portion.
2) the power supply power pack of receiver adopts the chargeable lithium cell power supply.
3) on the control circuit of receiver the expanding USB interface that can connect the peripheral hardware charging device is arranged, make things convenient for Charge Management.
4) button is divided into power switch key, volume adjusting key, makes things convenient for the visitor to select to use.
5) has the earphone jack that connects general earphone on the housing.
This utility model designs compared with prior art, and its advantage is:
1) this equipment has carried out Radio Transmission Technology and hardware device integrated, be integrated in the volume compact housing, and this housing has the upper and lower part, connects into clamp type by Spring Card, and is easy to carry.
2) effective receiving range of this equipment is greater than 80 meters.
3) receiver is listened to by connecting earphone, and sound stable is reliable.
4) power unit adopts light, the capacious chargeable lithium cell power supply of quality, enables long-time use.
This utility model is skillfully constructed, receiver is designed to a kind of small and exquisite clamp type, conveniently be clipped in certain position, be arranged to the frequency segment number identical with transmitting terminal, listen to tourist guide or leader's unified explanation and transfer, this equipment quality is light, easy to carry, is very suitable for tourist group, the visitor of team visits use.
Description of drawings
Fig. 1 is clamp type wireless receiver stereogram
Fig. 2 is clamp type wireless receiver theory diagram
Below in conjunction with accompanying drawing embodiment of the present utility model is further described:
According to Fig. 1, this clamp type wireless receiver adds key 3, outer casing underpart 4, power switch key 5, expanding USB interface 6, red led 7, green indicating lamp 8, earphone jack 9 by receiver shell upper 1, volume down key 2, volume and forms.
According to Fig. 2, this clamp type wireless receiver is made of MCU, radio-frequency (RF) identification receiving unit, power supply power pack, audio signal demodulation part, D/A conversion portion, the part of raising one's voice.
When tourist guide or guide lead the visitor to travel to visit, each visitor wears a clamp type wireless receiver, the visitor can be added on the knapsack, perhaps on the collar, the tourist guide uses transmitter, after the transmitter start, the visitor also opens receiver: the long power switch key 5 of pressing, this moment, red led 7 was bright, unclamp power switch key after, red led 7 and green indicating lamp 8 is simultaneously bright, expression is the frequency range of searching, after near searching the frequency range, red led 7 goes out, at this moment, receiver radio frequency identification receiving unit, receive the radiofrequency signal of transmitting terminal, after advancing MCU and handling, again through after audio signal demodulation part and the conversion of D/A conversion portion, by the part output of raising one's voice, listen to by earphone again.
The entire circuit system of clamp type wireless receiver by light, the capacious chargeable lithium cell of quality by the connecting circuit continued power, if the electric weight deficiency, then can charge by expanding USB interface 6, volume then adds key 3 by volume and volume down key 2 is regulated.