Summary of the invention
The problem and the deficiency that exist for above-mentioned prior art, the utility model provides a kind of demagnetization oscilloprobe, has solved that oscilloprobe is subject to the interference of external electromagnetic field in the time of detection signal and the problem of the signal serious distortion that detects.In this device, increase demagnetization control circuit and degaussing circuit, before oscilloprobe detects data, the magnetic field in environment has been eliminated, improve the accuracy of data, and this demagnetization oscilloprobe is simple in structure, cost is low, without electronic pollution, the utility model is achieved through the following technical solutions.
A kind of demagnetization oscilloprobe, taking demagnetization oscilloprobe as body, comprise switch 1, oscilloprobe pintle 2, probe earthing cable 3, power supply groove 4 and demagnetization module integration body 5, on described demagnetization oscilloprobe body, be embedded with power supply groove 4, power supply groove 4 is connected with switch 1, switch 1 is connected with the demagnetization module integration body 5 being embedded on demagnetization oscilloprobe body, demagnetization module integration body 5 is connected with probe earthing cable 3, demagnetization oscilloprobe front end is provided with oscilloprobe pintle 2, demagnetization module integration body 5 comprises demagnetization control circuit and degaussing circuit, relay K 1 end in demagnetization control circuit is connected with degaussing circuit.
Described demagnetization control circuit comprises relay module 6, triode T, store up/release energy element C, stabilivolt D, resistance R 1, the first current-limiting resistance R2 and the second current-limiting resistance R3, the first current-limiting resistance R2 and stabilivolt D are connected in series between vcc1 and vcc2 power supply, 1 end of triode T connects vcc1, 2 ends of triode T are connected in parallel, and store up/release can element capacitor C and the end of connecting of resistance R 1 and the second current-limiting resistance R3, store up/release and can element capacitor C be connected respectively vcc2 with resistance R 1, the second current-limiting resistance R3 is connected to the link p point that the first current-limiting resistance R2 connects with stabilivolt D, 3 ends of triode T are connected to vcc2 by relay coil L1.
Described degaussing circuit comprises two field-discharge resistance PTC1, PTC2, divider resistance R, anti-magnetized coil L, K switch and power supply AC, K switch 1 upper end of relay module 6 connects field-discharge resistance PTC2, field-discharge resistance PTC1, anti-magnetized coil L, K switch and power supply AC successively, between field-discharge resistance PTC2 and field-discharge resistance PTC1, after a divider resistance R in parallel, be connected with K switch, the other end of power supply AC is connected to the lower end of relay 6 K switch 1.
Relay model in above-mentioned relay module 6 is JQX14F.
The model of above-mentioned triode T is S8050.
The principle of work of this demagnetization oscilloprobe is: Closing Switch 1(is K switch), degaussing circuit action, anti-magnetized coil L produces the magnetic field contrary with surrounding magnetic field environment, eliminate the magnetic field in surrounding environment, through after a period of time, just conducting of triode T, make relay power, normally closed contact tripping, thus degaussing circuit and power supply are disconnected, after oscilloprobe switch 1 disconnects, + 5V loss of voltage, triode T cut-off, relay electric-loss is got back to again normally off, in order to energising demagnetization next time.
The beneficial effects of the utility model are: in (1) this device, increased demagnetization control circuit and degaussing circuit, before oscilloprobe detects data, the magnetic field in environment has been eliminated, improved the accuracy of data; (2) this demagnetization oscilloprobe is simple in structure, and cost is low, without electronic pollution.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1
As shown in Fig. 1 to 2, this demagnetization oscilloprobe, taking demagnetization oscilloprobe as body, comprise switch 1, oscilloprobe pintle 2, probe earthing cable 3, power supply groove 4 and demagnetization module integration body 5, on described demagnetization oscilloprobe body, be embedded with power supply groove 4, power supply groove 4 is connected with switch 1, switch 1 is connected with the demagnetization module integration body 5 being embedded on demagnetization oscilloprobe body, demagnetization module integration body 5 is connected with probe earthing cable 3, demagnetization oscilloprobe front end is provided with oscilloprobe pintle 2, demagnetization module integration body 5 comprises demagnetization control circuit and degaussing circuit, relay K 1 end in demagnetization control circuit is connected with degaussing circuit.
Wherein demagnetization control circuit comprises relay module 6, triode T, store up/release energy element C, stabilivolt D, resistance R 1, the first current-limiting resistance R2 and the second current-limiting resistance R3, the first current-limiting resistance R2 and stabilivolt D are connected in series between vcc1 and vcc2 power supply, 1 end of triode T connects vcc1, 2 ends of triode T are connected in parallel, and store up/release can element capacitor C and the end of connecting of resistance R 1 and the second current-limiting resistance R3, store up/release and can element capacitor C be connected respectively vcc2 with resistance R 1, the second current-limiting resistance R3 is connected to the link p point that the first current-limiting resistance R2 connects with stabilivolt D, 3 ends of triode T are connected to vcc2 by relay coil L1, degaussing circuit comprises two field-discharge resistance PTC1, PTC2, divider resistance R, anti-magnetized coil L, K switch and power supply AC, K switch 1 upper end of relay module 6 connects field-discharge resistance PTC2, field-discharge resistance PTC1, anti-magnetized coil L, K switch and power supply AC successively, between field-discharge resistance PTC2 and field-discharge resistance PTC1, after a divider resistance R in parallel, be connected with K switch, the other end of power supply AC is connected to the lower end of relay 6 K switch 1, relay model in relay module 6 is JQX14F, the model of triode T is S8050.