A kind of outdoor wireless LAP LAN Access Point equipment with automatic temperature-controlled function
Technical field
The utility model belongs to the wireless communication technique field, relates to a kind of device of wireless local area network access point, especially a kind ofly is operated in the open air, has the adaptive powerful device of wireless local area network access point of ambient temperature.
Background technology
Along with communication staff's business development, outdoor study increases gradually, and for the ease of work, outdoor wireless local network connecting point product also produces immediately.A kind of as WLAN-AP, advantage such as it is farther that outdoor high-power WLAN-AP has transmission range, and antijamming capability is stronger, and area coverage is bigger, and communication quality is higher, and it is little also to have volume simultaneously, easy for installation.Existing WLAN-AP generally adopts commercial designs, the function of tonic chord plate, power amplifier, mixed-media network modules mixed-media, the AC/DC power supply four module that are about to AP couple together by certain principle, satisfy general communication and get final product, seldom consider problems such as the maintenance of equipment and environment for use.Communication quality descends with the variation of environment for use so commercial designs has caused the high repair rate of product and communication quality, even the generation of phenomenon such as can not communicate by letter.So, for outdoor communication equipment, not only to consider outside the waterproof of equipment, the environmental factor such as antirust, the ambient temperature that also necessary consideration equipment uses, for example-40 ℃ or 60 ℃ with under the first-class situation, the general cisco unity malfunction of equipment, thus cause communication effect poor, even the useful life that causes equipment fault to take place again and again and shorten equipment.
Summary of the invention
The purpose of this utility model is in order to solve can the conform technical problem of temperature of outdoor device of wireless local area network access point, designed a kind of outdoor wireless LAP LAN Access Point equipment with automatic temperature-controlled function, gather ambient temperature in real time by temperature collection circuit, and the temperature parameter of device of wireless local area network access point reasonably is provided with, thereby the temperature that guarantees device of wireless local area network access point is in the temperature range of operate as normal.
The utility model for realizing the technical scheme that goal of the invention adopts is, a kind of outdoor wireless LAP LAN Access Point equipment with automatic temperature-controlled function, comprise the housing that is provided with power interface and Ethernet interface in the structure of above device of wireless local area network access point, be installed in the function of tonic chord plate that has the communication main circuit in the housing, ethernet module, and power amplifier, also comprise temperature collection circuit in the circuit structure of function of tonic chord plate, heater circuit, the heat radiation circuit, voltage comparator circuit and the voltage conversion circuit that carries out the power supply supply for above circuit, temperature collection circuit is gathered the temperature in the housing in real time, be converted to voltage signal and send to voltage comparator circuit, output control signals to heater circuit after the voltage comparator circuit comparison process, or the controlled input end of heat radiation circuit.
Circuit theory of the present utility model is: after at first device of wireless local area network access point being provided with minimum temperature and maximum temperature, temperature collection circuit is gathered the temperature of device of wireless local area network access point environment of living in real time, be converted to voltage signal and send to voltage comparator circuit, the voltage comparator circuit computing, if be lower than default minimum temperature, then voltage comparator circuit outputs control signals to the controlled input end of heater circuit, heater circuit heats, and the temperature that improves device of wireless local area network access point is to reach normal working temperature; If the temperature of gathering is higher than default maximum temperature, then voltage comparator circuit outputs control signals to the controlled input end of heat radiation circuit, and the heat radiation circuit dispels the heat, and the temperature that reduces device of wireless local area network access point is to reach normal working temperature.
The beneficial effects of the utility model are: by increasing the automatic controlled function of temperature, and the defective that under the limiting temperature equipment of having solved can not good communication, the limitation that reduction equipment uses; And when guaranteeing that communication is good, also reduced the rate of occurrence of equipment failure of equipment because of under the non-normal working temperature, causing, prolonged the useful life of equipment.
Below in conjunction with accompanying drawing the utility model is elaborated.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of temperature collection circuit.
Fig. 3 is the circuit theory diagrams of voltage comparator circuit.
Fig. 4 is the circuit theory diagrams of heater circuit.
Fig. 5 is the circuit theory diagrams of heat radiation circuit.
In the accompanying drawing, the 1st, temperature collection circuit, the 2nd, heater circuit, the 3rd, heat radiation circuit, the 4th, voltage comparator circuit, the 5th, voltage conversion circuit, 5-1 is a direct-current voltage reducing circuit, and 5-2 is a DC voltage booster circuit, the 6th, and the communication main circuit, R1, R2 are thermistors, and R3-R10 is a resistance wire, and R11-R14 is a resistance, U1, U2 are the voltage comparable chip, Q1, Q2, Q3 are triodes, and Q4, Q5 are switching tubes, and C1, C2, C3 are electric capacity.
Embodiment
Referring to Fig. 1, a kind of outdoor wireless LAP LAN Access Point equipment with automatic temperature-controlled function, comprise the housing that is provided with power interface and Ethernet interface in the structure of above device of wireless local area network access point, be installed in the function of tonic chord plate that has communication main circuit 6 in the housing, ethernet module, and power amplifier, also comprise temperature collection circuit 1 in the circuit structure of function of tonic chord plate, heater circuit 2, heat radiation circuit 3, voltage comparator circuit 4 and the voltage conversion circuit 5 that carries out the power supply supply for above circuit, temperature collection circuit 1 is gathered the temperature in the housing in real time, be converted to voltage signal and send to voltage comparator circuit 4, output control signals to heater circuit 2 after voltage comparator circuit 4 comparison process, or the controlled input end of heat radiation circuit 3.
Above-mentioned voltage conversion circuit 5 comprises direct-current voltage reducing circuit 5-1 and DC voltage booster circuit 5-2, direct-current voltage reducing circuit 5-1 is connected with the prime power circuit of communication main circuit 6, output after the direct-current voltage reducing circuit 5-1 step-down is as the working power of heater circuit 2, heat radiation circuit 3 and communication main circuit 6, and the output of direct-current voltage reducing circuit 5-1 is connected with the input of DC voltage booster circuit 5-2, and the output after DC voltage booster circuit 5-2 boosts is as the working power of temperature collection circuit 1 and voltage comparator circuit 4.
Referring to Fig. 2, above-mentioned temperature collection circuit 1 comprises a pair of thermistor R1, R2 and supporting resistance R 11, R12 and capacitor C 3, and the voltage signal of gathering after thermistor R1 connects with thermistor R2 is sent to the input of voltage comparator circuit 4.
Referring to Fig. 3, above-mentioned voltage comparator circuit 4 comprises voltage comparable chip U1, U2, three triode Q1, Q2, Q3 and voltage comparable chip U1, supporting resistance around the U2, capacity cell, the input of voltage comparable chip U1 and voltage comparable chip U2 receives thermistor R1, voltage signal after the R2 series connection, input control signal is to triode Q1 after handling relatively, or triode Q2, or the base stage of triode Q3, triode Q1 collector electrode connects heater circuit 2 inputs, triode Q2 collector electrode connects heat radiation circuit 3 inputs, and triode Q3 connects the input of communication main circuit 6.Referring to Fig. 4, above-mentioned heater circuit 2 comprises one group of parallel resistor silk R3-R10, switching tube Q4 and supporting capacity cell on every side, switching tube Q4 is connected between the output and resistance wire R3-R10 of direct-current voltage reducing circuit 5-1, and the controlled termination of switching tube Q4 is received the control signal of voltage comparable chip U1 output.
Referring to Fig. 5, above-mentioned heat radiation circuit 3 comprises fan FAN, switching tube Q5 and supporting capacity cell on every side, switching tube Q5 is connected between the output and fan of direct-current voltage reducing circuit 5-1, and the controlled termination of switching tube Q5 is received the control signal of voltage comparable chip U2 output.
Above-mentioned heater circuit 2 also comprises the delay circuit of being made up of resistance R 13 and capacitor C 1.
Above-mentioned heat radiation circuit 3 also comprises the delay circuit of being made up of resistance R 14 and capacitor C 2.
Also be provided with radio frequency connector and radio frequency arrester on the above-mentioned housing.
The utility model is when concrete the use, obtain the DC power supply VCC3 of 3V after the power supply step-down of advancing of direct-current voltage reducing circuit 5-1 with function of tonic chord plate, to supply with the working power of heater circuit 2, heat radiation circuit 3 and communication main circuit 6, after direct-current voltage reducing circuit 5-1 connects DC voltage booster circuit 5-2, DC voltage booster circuit 5-2 is with the 3V boost in voltage of the direct-current voltage reducing circuit 5-1 output DC power supply VCC8 to 8V, to supply with the working power of temperature collection circuit 1 and voltage comparator circuit 4.
Referring to Fig. 2-Fig. 5, circuit theory is: after at first device of wireless local area network access point being provided with minimum temperature and maximum temperature, minimum temperature is deposited among the voltage comparable chip U1, maximum temperature is deposited among the voltage comparable chip U2, thermistor R1, R2 in the temperature collection circuit 1 gathers the temperature of device of wireless local area network access point environment of living in real time, is converted to voltage signal and sends to voltage comparable chip U1 and voltage comparable chip U2 in the voltage comparator circuit 4.
The computational process of voltage comparator circuit 4 is: if the temperature of gathering is lower than the default minimum temperature of voltage comparable chip U1, for example-40 ℃, then voltage comparable chip U1 outputs control signals to the controlled input end of heater circuit 2, switching tube Q4 closure in the heater circuit 2, resistance wire R3-R10 heats, and the temperature that improves device of wireless local area network access point is to reach normal working temperature; If the temperature of gathering is higher than the default maximum temperature of voltage comparable chip U2, for example 60 ℃, then voltage comparable chip U2 outputs control signals to the controlled input end of heat radiation circuit 3, switching tube Q5 closure in the heat radiation circuit 3, fan FAN starts working, and the temperature that reduces device of wireless local area network access point is to reach normal working temperature; If the temperature of gathering is greater than the default minimum temperature of voltage comparable chip U1, less than the default maximum temperature of voltage comparable chip U2, then voltage comparable chip U1 outputs control signals to the input of communication main circuit 6, but this moment the device of wireless local area network access point operate as normal.
By above setting to device of wireless local area network access point, in order to guarantee the device of wireless local area network access point operate as normal, thermistor R1, R2 gather and control the operating ambient temperature of communication main circuit 6 in real time, in communication main circuit 6, also switching tube can be set, and then the switching tube of controlling respectively in heater circuit 2, heat radiation circuit 3 and the communication main circuit 6 by two voltage comparable chip U1, U2 comes the gating mode of operation: heating, heat radiation, operate as normal.If in the running, fluctuation appears in temperature, and corresponding circuit is then according to the control signal work of voltage comparator circuit 4 or close, but communication main circuit 6 is in running order always, avoids the 6 continuous open and close of communication main circuit and influences equipment life.