A kind of digital electronic detonator initiator that adopts the amplitude shift keying technology
Technical field
The utility model relates to the priming system technical field, particularly a kind of digital electronic detonator initiator that adopts the amplitude shift keying technology.
Background technology
The mode of direct current carrier wave is generally adopted in communicating by letter between existing digital electric detonator and the initiator, its poor anti jamming capability, and bit error rate height, the transmission data are unreliable, have very big potential safety hazard.
If initiator is transferred to the data generation error code of digital electric detonator, may cause the mistake of digital electric detonator to detonate.As: the delay time mistake, the digital electric detonator that is less than delay time has detonated, and the digital electric detonator that delay time has been crossed does not detonate; Detonator id information mistake, the digital electric detonator that should not detonate has detonated, and this digital electric detonator that detonates does not detonate, etc.
If digital electric detonator is transferred to the data generation error code of initiator, two kinds of situations are arranged so: before one, this error code occurs in digital electric detonator and detonates, information such as the state of the digital electric detonator of initiator collection, position make a mistake, may cause the information such as state, position of operator's logarithmic code electric detonator to do the judgement that makes mistake, so that send wrong operational order; Two, after this error code occurs in digital electric detonator and detonates, the condition information that detonates of the digital electric detonator of initiator collection makes a mistake, as which digital electric detonator detonated, which digital electric detonator do not detonate, the demolition effect of each digital electric detonator etc. makes a mistake, may cause the operator blasting result to be done the judgement that makes mistake, in this case, if the operator need enter the blast area, will there be very big risk.
Summary of the invention
The purpose of this utility model is mode poor anti jamming capability, bit error rate height, the insecure problem of transmission data of communicating by letter and adopting the direct current carrier wave that solves between digital electric detonator and the initiator.
For achieving the above object, the utility model provides a kind of digital electronic detonator initiator that adopts the amplitude shift keying technology, comprises microprocessor control unit, real-time clock, PMU, memory cell, display unit, general input/output interface and shell.
Described microprocessor control unit is the core component of described digital electronic detonator initiator, is connected with other composition module of described digital electronic detonator initiator, coordinates each module and carries out work.
Described real-time clock provides temporal information for described digital electronic detonator initiator.
Described PMU is that described digital electronic detonator initiator is respectively formed module for power supply.
Described memory cell is controlled by described microprocessor control unit, the storage desired data.
Described display unit is used to show state and operator prompting's information of described digital electronic detonator initiator.
Described general input/output interface is described digital electronic detonator initiator and extraneous mutual interface.
Described shell is the carrier that described digital electronic detonator initiator is respectively formed module, and each is formed module and all is fixed in enclosure, and hard, the anti-damage ability of shell is strong, is used to resist outside adverse circumstances.
Described digital electronic detonator initiator also comprises the amplitude shift key modulation demodulating unit, is used to realize the amplitude shift key modulation and the demodulation of data signal.
Described digital electronic detonator initiator carries out amplitude shift key modulation by described amplitude shift key modulation demodulating unit to the data that will send, and sends to digital electric detonator then.
Described digital electronic detonator initiator at first carries out the amplitude shift keying demodulation by described amplitude shift key modulation demodulating unit to the data that receive after receiving data from digital electric detonator.
Described amplitude shift key modulation is the binary system amplitude shift keying.
Described binary system amplitude shift keying signal is the on-off keying signal.
Described amplitude shift key modulation demodulating unit comprises modulator and demodulator.
As shown from the above technical solution, the utility model has following beneficial effect by the mode of the employing of the communication data between logarithmic code electronic detonator initiator and digital electric detonator amplitude shift key modulation:
1, strong interference immunity, the bit error rate are low, the transmission data are reliable;
2, simple, realization easily.
Description of drawings
Fig. 1 is the composition schematic diagram of digital electronic detonator initiator described in the utility model;
The block diagram of the modulator that Fig. 2 comprises for amplitude shift key modulation demodulating unit described in the utility model;
Fig. 3 is the oscillogram of amplitude shift key modulation technology described in the utility model;
The block diagram of the demodulator that Fig. 4 comprises for amplitude shift key modulation demodulating unit described in the utility model.
The specific embodiment
As shown in Figure 1, be a kind of composition schematic diagram that adopts the digital electronic detonator initiator of amplitude shift keying technology described in the utility model.
The utility model provides a kind of digital electronic detonator initiator that adopts the amplitude shift keying technology, comprises microprocessor control unit 10, real-time clock 11, PMU 12, memory cell 13, display unit 14, general input/output interface 15 and shell 16.
Described microprocessor control unit 10 is core components of described digital electronic detonator initiator, is connected with other composition module of described digital electronic detonator initiator, coordinates each module and carries out work.
Described real-time clock 11 provides temporal information for described digital electronic detonator initiator.
Described PMU 12 is respectively formed module for power supply for described digital electronic detonator initiator.
Described memory cell 13 is controlled by described microprocessor control unit, the storage desired data.
Described display unit 14 is used to show state and operator prompting's information of described digital electronic detonator initiator.
Described general input/output interface 15 is described digital electronic detonator initiator and extraneous mutual interface.
Described shell 16 is carriers that described digital electronic detonator initiator is respectively formed module, and each is formed module and all is fixed in enclosure, and hard, the anti-damage ability of shell is strong, is used to resist outside adverse circumstances.
Described digital electronic detonator initiator also comprises amplitude shift key modulation demodulating unit 17, is used to realize the amplitude shift key modulation and the demodulation of data signal.
Described digital electronic detonator initiator carries out amplitude shift key modulation by 17 pairs of data that will send of described amplitude shift key modulation demodulating unit, sends to digital electric detonator then.
Described digital electronic detonator initiator at first carries out the amplitude shift keying demodulation by 17 pairs of data that receive of described amplitude shift key modulation demodulating unit after receiving data from digital electric detonator.
Described amplitude shift key modulation is the binary system amplitude shift keying.
Described binary system amplitude shift keying signal is the on-off keying signal.
Described amplitude shift key modulation demodulating unit 17 comprises modulator and demodulator.
Amplitude shift keying is called amplitude-shift keying again, is designated as ASK, and promptly the amplitude of carrier wave is subjected to the modulation of numerical data and gets different values.The binary system amplitude shift keying is designated as 2ASK.Binary system amplitude shift keying signal has a special case, corresponding Binary Zero, and carrier amplitude is 0, corresponding binary one, carrier amplitude is 1, promptly a signal condition is always zero, be equivalent to be in off-state, this is called on-off keying signal or on-off keying signal often, and note is made the OOK signal.
Amplitude shift keying is a kind of simple relatively modulation system.Amplitude shift keying (ASK) is equivalent to the amplitude modulation in the analog signal, and what only multiply each other with CF signal is binary numeral.Amplitude shift be exactly frequency, phase place as constant, and amplitude as variable, information bit is to transmit by the amplitude of carrier wave.Binary system amplitude-shift keying (2ASK), because modulation signal has only 0 or 1 two level, multiplied result is equivalent to carrier frequency or shutoff, perhaps connects, its practical significance is when modulated digital signal is " 1 ", the transmission carrier wave; When modulated digital signal is " 0 ", do not transmit carrier wave.
Amplitude keying can be realized by multiplier and on-off circuit.Carrier wave is on-off under the control of data signal " 0 " or " 1 ", is the state carrier wave connection of " 1 " at signal, has this moment carrier wave to occur on the transmission channel; At signal is that carrier wave is turned off under the state of " 0 ", and carrierfree transmits on the transmission channel at this moment.We just can restore 1 and 0 of data signal according to having or not of carrier wave at receiving terminal so.
Carrier wave is meant modulated waveform with the transmission signal, is generally sine wave, is not have modulation signal, does not promptly have under the situation of other electric wave cycle pulse strings that can be used for modulating or direct current the radio wave that is produced by emitter.Generally require the frequency of sinusoidal carrier to be higher than the bandwidth of modulation signal far away, otherwise aliasing can take place, make the transmission distorted signals.
As shown in Figure 2, the block diagram of the modulator that comprises of amplitude shift key modulation demodulating unit described in the utility model.Wherein, the carrier wave sinusoidal signal, input signal is the base band rectangular pulse, modulation signal is that Serial No. is converted to unipolar base band square pulse, and the effect of this on-off keying is exactly this output and carrier multiplication, just can frequency spectrum shift near carrier frequency, realize 2ASK.
As shown in Figure 3, be the oscillogram of amplitude shift key modulation technology described in the utility model.Wherein, carrier wave is sinusoidal wave, and input signal is a binary digital signal, and output signal is a modulating wave.
As shown in Figure 4, the block diagram of the demodulator that comprises for amplitude shift key modulation demodulating unit described in the utility model.Input signal is a modulating wave, behind bandpass filter, half-wave or full-wave rectifier, low pass filter, sampling decision device, demodulates primary signal.