For the wireless signal forward relay device of wireless temperature-measuring sensor
Technical field
The utility model relates to a kind of signal forward relay device, particularly relates to a kind of wireless signal forward relay device for wireless temperature-measuring sensor.
Background technology
Wireless temperature-measuring sensor needs, by wireless signal forward relay device, temperature information is sent to temperature monitoring system usually, refer to shown in Fig. 1, existing wireless signal forward relay device comprises microprocessor, linear power source circuit, wireless data transmission unit and wire communication interface circuit, linear power source circuit is for regulating the voltage swing of power supply, and the electric energy supply circuit after overregulating is used, the supply voltage of linear power source circuit is 5V direct current, and this 5V direct current becomes 3.3V direct current after linear power source circuit.Described wireless data transmission unit adopts 433MHz wireless data transfer module, described wireless data transmission unit receives the wireless temperature signal that wireless temperature-measuring sensor sends, and this temperature signal is sent to microprocessor processes, the temperature signal after process is sent to temperature monitoring system by wire communication interface circuit by described microprocessor again.
When embody rule, temperature signal can only be sent to temperature monitoring system by wire communication interface circuit by existing wireless signal forward relay device, when user arranges grid line difficulty, can not adopt wireless mode that temperature signal is sent to temperature monitoring system, cannot meet consumers' demand.
In addition, existing wireless signal forward relay device directly can not access civil power, and the 5V out-put supply that power supply adaptor or other equipment must be adopted to provide is powered, this power supply is when being subject to electromagnetic interference (EMI), tolerance tolerance limit is very low, relay can be made normally to run, use very inconvenient.Existing wireless signal forward relay device is not provided with man-machine interface, therefore cannot parameters, and the configuration information that is cured before must dispatching from the factory (such as RS485 address and communication baud rate etc.), cannot meet the requirement of on-the-spot flexible networking communication.
Therefore, be necessary to provide a kind of new wireless signal forward relay device to solve the problems referred to above.
Utility model content
The purpose of this utility model is to provide one can directly access civil power and human-machine operation, and can wireless receiving and the wireless signal forward relay device for wireless temperature-measuring sensor forwarding temperature signal.
To achieve these goals, the technical scheme that adopts of the utility model is as follows:
For a wireless signal forward relay device for wireless temperature-measuring sensor, comprise for control microprocessor that whole circuit runs, for regulation voltage size linear power source circuit, for described microprocessor carry out wireless data transceiving the first wireless data transmission unit and for carrying out the wire communication interface circuit of data transmission with described microprocessor; Described microprocessor is electrically connected with described first wireless data transmission unit and described wire communication interface circuit respectively, and described wireless signal forward relay device also comprises:
For the man-machine interface circuit of human-machine operation, described man-machine interface circuit and described microprocessor are electrically connected;
For converting alternating current to galvanic power conversion unit, the input end of described power conversion unit connects civil power, the output terminal of described power conversion unit is electrically connected with the first power input of described wire communication interface circuit and the input end of described linear power source circuit respectively, and the output terminal of described linear power source circuit is electrically connected with the power input of the power input of described microprocessor, the second source input end of wire communication interface circuit and the first wireless data transmission unit respectively.
Preferably, described wireless signal forward relay device also comprises for carrying out the second wireless data transmission unit of wireless data transceiving with described microprocessor, and the power input of described second wireless data transmission unit and the output terminal of described linear power source circuit are electrically connected.
Preferably, described first wireless data transmission unit is 433MHz wireless data transfer module, and described second wireless data transmission unit is 2.GHz wireless data transfer module.
Preferably, described first wireless data transmission unit or the second wireless data transmission unit and described wireless temperature-measuring sensor wireless connections and receive the temperature information that described wireless temperature-measuring sensor collects.
Preferably, described linear power source circuit comprises low pressure difference linear voltage regulator.
Preferably, described wire communication interface circuit is RS485 communication unit.
Preferably, described man-machine interface circuit comprises liquid crystal display, button and pilot lamp.
Compared with prior art, the beneficial effect of the utility model wireless signal forward relay device is: the utility model is provided with power conversion unit, directly can access civil power and civil power be converted to direct current and use, without the need to other power supplys or power supply adaptor, saved production cost, and interference free performance is better; The utility model is provided with two wireless data transmission unit simultaneously, one of them wireless data transmission unit can wireless receiving temperature signal, temperature signal after treatment all can be forwarded to temperature monitoring system by another wireless data transmission unit and wire communication interface circuit, there are wireless forwarding and wired forwarding two kinds of transmission modes, be convenient to improve operating efficiency; Man-machine interface circuit described in the utility model can be convenient to user and observe the temperature information received in this locality, is also convenient to user and arranges configuration parameter and temperature alarming value, considerably increase the dirigibility of application.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of existing wireless signal forward relay device;
Fig. 2 is the circuit structure block diagram of the utility model for the wireless signal forward relay device of wireless temperature-measuring sensor.
Embodiment
Below in conjunction with specific embodiment, the utility model is described further.
Refer to shown in Fig. 2, the wireless signal forward relay device that the utility model is used for wireless temperature-measuring sensor comprises:
For controlling the microprocessor that whole circuit runs;
For converting alternating current to galvanic power conversion unit;
For the linear power source circuit of regulation voltage size, described linear power source circuit comprises low pressure difference linear voltage regulator;
For carrying out the wire communication interface circuit of data transmission with described microprocessor, described wire communication interface circuit is RS485 communication unit;
For carrying out the first wireless data transmission unit of wireless data transceiving with described microprocessor, described first wireless data transmission unit is 433MHz wireless data transfer module;
For carrying out the second wireless data transmission unit of wireless data transceiving with described microprocessor, described second wireless data transmission unit is 2.GHz wireless data transfer module;
For the man-machine interface circuit of human-machine operation, described man-machine interface circuit comprises liquid crystal display, button and pilot lamp.
Wherein, described power conversion unit directly can access civil power and civil power be converted to direct current and use, and without the need to other power supplys or power supply adaptor, saved production cost, and interference free performance is better.During use, the input end of described power conversion unit connects civil power (alternating current 220V), civil power is converted to 5V direct current and exports by power conversion unit, output terminal and the described wire communication interface circuit of power conversion unit are electrically connected, thus provide electric energy for described wire communication interface circuit.
The output terminal of described power conversion unit is also electrically connected with the input end of described linear power source circuit, 5V direct current is adjusted to 3.3V direct current and exports by described linear power source circuit, the output terminal of linear power source circuit respectively with the power input of described microprocessor, the second source input end of wire communication interface circuit, the power input of the first wireless data transmission unit and the power input of the second wireless data transmission unit are electrically connected, thus be described microprocessor, wire communication interface circuit, first wireless data transmission unit and the second wireless data transmission unit provide electric energy.
Described microprocessor is electrically connected with described wire communication interface circuit, the first wireless data transmission unit, the second wireless data transmission unit and man-machine interface circuit respectively.
When receiving the wireless temperature data that wireless temperature-measuring sensor sends, user can select the first wireless data transmission unit or the second wireless data transmission unit to receive this wireless temperature data, the present embodiment Selection utilization first wireless data transmission unit receives this wireless temperature data, and the wireless temperature data received are sent to described microprocessor and process by the first wireless data transmission unit.
When forwarding wireless temperature data, have wireless forwarding and wired forwarding two kinds of transmission modes, user can select wherein a kind of transmission mode by actual conditions, is convenient to improve operating efficiency.
When selecting wireless forwarding transmission mode, described wireless temperature data after described microprocessor processes, then are forwarded to temperature monitoring system by described second wireless data transmission unit; When selecting wired forwarding transmission mode, described wireless temperature data after described microprocessor processes, then are forwarded to temperature monitoring system by described wire communication interface circuit.
Described man-machine interface circuit is used for artificial setting employing first wireless data transmission unit or the second wireless data transmission unit receives wireless temperature data, setting adopts wireless forwarding transmission mode or wired forwarding transmission mode to forward wireless temperature data, in addition, user can also be convenient to and observe the temperature information received in this locality, and some configuration parameter value and temperature alarming value are set, considerably increase the dirigibility of application.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.