The anti-dismounting GPS device that is used for engineering machinery
Technical field
The utility model relates to a kind of positioning and tracking device of engineering machinery field, in particular a kind of anti-dismounting GPS device that is used for engineering machinery.
Background technology
At present, answer demands such as Sales Supervisor, loan control and state acquisition, many engineering machinery are equipped with the gps satellite positioning tracker.It act as: the various status informations of determining equipment current location information and the current operation of collecting device by the GPS Global Positioning System (GPS) are sent to Surveillance center by the GSM network with information, the monitor staff of Surveillance center is sent to gps satellite positioning tracker by the GSM network with information according to the state of this equipment, carries out after the gps satellite positioning tracker receives orders.
Thereby but the client that some loans are bought engineering machinery is unwilling owing to various reasons that the position of equipment is searched by manufacturing firm or equipment controlled the gps satellite positioning tracker on the equipment is removed.As shown in Figure 1, the function of gps satellite positioning tracker 1 control lock car is relay contact output at present, be serially connected on the control loop of engineering machinery 2, as shown in Figure 2, the user only can will recover the repertoire of engineering machinery 2 by simple short-circuit plug 3, so the control mode of gps satellite positioning tracker relay contact output at present can not prevent well that the user from removing the gps satellite positioning tracker.
The utility model content
The utility model purpose: the purpose of this utility model is to overcome the deficiencies in the prior art, a kind of anti-dismounting GPS device that is used for engineering machinery is provided, by being set, an oscillator signal produces circuit on the main frame of GPS positioning tracker, an oscillator signal reception control circuit is set on the solenoid valve plug of engineering machinery, has realized the tamper feasibility of GPS positioning tracker.
Technical scheme: the utility model is achieved through the following technical solutions, the utility model comprises that GPS positioning tracker, oscillator signal produce circuit and oscillator signal reception control circuit, wherein: oscillator signal produces circuit and is located on the main frame of GPS positioning tracker, and oscillator signal produces circuit and links to each other with the oscillator signal reception control circuit with the transmission oscillator signal.
Described oscillator signal reception control circuit is arranged on the solenoid valve plug on the engineering machinery, with the action of control electromagnetic valve, realizes the control to engineering machinery.
The waveform that described oscillator signal produces the circuit generation is waveforms such as square wave, sine wave, triangular wave, uses Waveform Control, but not simple high-low level control.
Principle of work of the present utility model: when the oscillator signal control circuit on the solenoid control plug detects the oscillator signal input, could control to this solenoid valve, so in case the GPS positioning tracker is removed, the oscillator signal reception control circuit does not receive oscillator signal and loses the control that this solenoid valve is moved so, thereby has realized the tamper of GPS positioning tracker.
Beneficial effect: the utility model is simple in structure, can prevent effectively that the user from carrying out the situation that simple short circuit is promptly removed the GPS positioning tracker, equipment can not run well if user's malice is removed the GPS positioning tracker, solve the GPS positioning tracker effectively and be removed a series of problems of bringing, realization has great economic benefit to the monitoring of engineering machinery.
Description of drawings
Fig. 1 is the structural representation of the GPS device of prior art;
Fig. 2 is the structural representation that the prior art user removes short circuit control privately;
Fig. 3 is a structural representation of the present utility model.
Embodiment
Below embodiment of the present utility model is elaborated; present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 3, present embodiment comprises that GPS positioning tracker 1, oscillator signal produce circuit 4 and oscillator signal reception control circuit 5, wherein: oscillator signal produces circuit 4 and is located on the main frame of GPS positioning tracker 1, and oscillator signal reception control circuit 5 produces circuit 4 with oscillator signal and links to each other to receive oscillator signal.
Described oscillator signal control circuit 5 links to each other with solenoid valve plug on the engineering machinery 2, to realize the control to engineering machinery 2.
The waveform that described oscillator signal produces circuit 4 generations is waveforms such as square wave, sinusoidal wave triangular wave, uses Waveform Control, but not simple high-low level control.
When detecting the oscillator signal input, the oscillator signal reception control circuit 5 on the solenoid valve plug could control this solenoid valve, so in case GPS positioning tracker 1 is removed, do not have oscillator signal to produce so and then lose the control that this solenoid valve is moved, thereby realized the tamper of GPS positioning tracker 1.